DE29718703U1 - Combined grinding, cutting and deburring machine - Google Patents

Description

Lutz Bürkner 21 October 1997

04683 Threna . GM18/97

Combined grinding, cutting and deburring machine

The invention relates to a combined grinding, cutting and deburring machine for making straight cuts and miter cuts on solid, hollow and flat profiles made of steel, stainless steel, non-ferrous metals, ceramics and natural stones in all areas of application in trade and industry.

There are known belt sanders that are available as hand-held devices for hand and DIY needs in wholesale and retail stores. The well-known portable belt sanders are equipped with commercially available sanding belts that are designed for stationary belt sanders with drive disk diameters of 190 to 200 mm and rotation speeds of 12,300 rpm. However, the portable belt sanders have drive disk diameters of 120 mm that only run at 10,000 to 10,500 rpm. The result is rapid wear of the sanding belts, whose performance is not used optimally. There are also electrically operated angle grinders that work with grinding disks. Operating the machines with one or two hands makes it difficult to compensate for the vibrations of the devices caused by the motor and the power transmission elements and the oscillations in the disk. The workpieces to be processed must therefore be held in additional clamping devices. The nature of the clamping devices available on the market is unsuitable for precise work. They are only of limited use for larger workpieces. The result is that the machines move out of the guides and the cutting lines are inaccurate, as well as the grinding wheels wear unevenly. The fact that the machines continue to run at high speed after they have been switched off is also a major disadvantage. They cannot be put down before the cutting wheel has stopped without risking damage and/or injury. In order to achieve optimum cutting depths, the grinding wheels are also inadequately provided with protective covers, which also poses a great risk of injury. When carrying out cutting work, the entire machine must be constantly

Weight including the machine's drive motor must be kept, which leads to fatigue during longer work processes and, as a result, carelessness when handling the equipment. The resulting grinding dust and chips are thrown into the environment and can cause skin or eye injuries. In addition, the metal waste must be collected before it is disposed of. When carrying out different types of work, the appropriate machine must be purchased for each activity and, especially on construction sites, all equipment must be carried along, which is costly and labor-intensive and disadvantageous for work organization.

It is therefore the object of the invention to develop a stationary machine that can be easily and quickly set up but is manually transportable, which combines a belt grinding and a cutting device as well as a deburring device and can be driven by a single motor, which is environmentally friendly and equipped with optimal protective devices as well as with stationary stop devices and can be aligned to the workpiece regardless of location.

The task is solved by a combined grinding, cutting and deburring machine for making straight cuts and miter cuts on solid, hollow and flat profiles made of steel, stainless steel, non-ferrous metals, ceramics and natural stones with the characterizing features of claim 1.

The machine construction according to the invention allows the integration of a belt grinding machine, a cutting device and a deburring device in a manually transportable device. The housing of the machine according to claims 2 to 5 is designed in such a way that it can meet the stability requirements in workshops and on construction sites due to its solid, predominantly force-locking arrangement of the housing and holding device parts. At the same time, the housing enables the arrangement of a belt grinding device, a cutting device and a deburring device in such a way that they can be operated independently and separately with just one drive.

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can be supplied with energy from one another. Dust and chip removal devices arranged in and on the housing and on the worktop of the machine and a chip box according to claim 4 as well as a chip collector according to claim 6 prevent the dangerous throwing of metal chips into the environment and minimize the associated risk of injury to people. In addition, metal waste can be conveniently collected and disposed of in an environmentally friendly manner. It is particularly advantageous that the drive motor arranged in the housing can be switched on or off with just one electrical switch and that the drive motor directly drives only the grinding device according to claim 7. The grinding belt serves as the power transmission element, which means that a V-belt or the like is unnecessary. The structural design of the drive and deflection rollers according to claim 8 is worth emphasizing. The pressed hollow bodies are light and therefore allow them to be made with a large diameter, which means that the performance of the grinding belt can be optimally utilized and its service life can be extended. In particular, the radial recesses pressed into the side surfaces of the hollow bodies according to the invention ensure a safe and continuous mechanical transmission of force from the deflection roller to the cutting device and the deburring device. A further advantage is achieved by the bearing of the deflection roller according to claim 9. The compression springs arranged between the bearing block holder of the housing and the bearing block allow the deflection roller to be pressed against the drive roller, which ensures easy replacement and immediate tensioning of the sanding belt. Additional adjustment devices for tensioning the sanding belt are unnecessary, which in turn has a cost-effective effect. The shaft of the deflection roller, which can be adjusted according to claim 10, supports the central and safe storage of the sanding belt on the deflection roller. The protective cover over the circulating roller protruding from the housing also offers optimal work protection. Another thing to be emphasized is the optically and functionally subdivided working surface of the sanding belt according to claim 11, which, with an elastic area, offers the possibility of carrying out phases very cleanly, whereby the hard-backed lower area is particularly suitable for grinding drills. Furthermore, the worktop according to claim 6 not only represents a safe and stable

Cover element for the housing of the machine, it offers an easily adjustable, precise and tear-resistant stop for the workpieces thanks to the stationary angle adjustment devices, without having to clamp them. The grinding carriage arranged on the worktop according to claims 12 and 13 is particularly noteworthy. A support table that slides easily across the width of the grinding belt transversely to the running direction of the grinding belt ensures evenly strong wear across the entire width of the grinding belt. The stop on the grinding carriage, which can be moved and adjusted at defined angles within a range of 180°, also ensures absolutely precise grinding of phases, regardless of the subjective skills of the machine operator.

The cutting device according to the invention offers another great advantage according to claims 14 to 18. It is equipped with a mechanical power transmission system that makes a separate electric drive for the cutting device unnecessary. On the one hand, this allows the cutting device to be relatively small and light and, on the other hand, leads to considerable cost savings. The eccentric mounting of all parts, in particular the cutting disc in the housing of the cutting device according to claim 15, proves to be essential, as this provides an optimal working surface for the cutting disc and enables an optimal cutting depth to be achieved. Furthermore, the eccentric arrangement of the bearing supports on the housing of the cutting device, transverse to the running direction of the cutting device, promotes an optimal leverage and force ratio between the cutting device and the grinding device. Particularly noteworthy is the special bearing block construction and the cutting device mounted therein according to claims 19 to 22. The structural design of the bearing block webs of the upper bearing block according to claim 19, the additional securing with springs according to claim 20 and the special movement ratios of the cutting device to the bearing block construction according to claims 21 and 22 ensure a uniformly strong contact pressure and an optimal and low-wear drive of the transmission element of the cutting device on the deflection roller of the grinding device. The protective cover above the cutting disc according to claim 23 ensures

additionally provides optimum work protection. The function of the cutting device is advantageously supported by the stationary stop on the worktop according to claims 24 to 26 in conjunction with the recesses in the worktop. The stop rail, which lies close to the worktop and is rotatably attached, prevents particularly thin workpieces from being pulled under the stop. The cutting device can also be guided to the workpiece with the stop angle set by additionally rotating the entire machine. In addition, the cutting gap that runs into the pin of the stop rail and the correspondingly shaped recess in the worktop enable the cutting disc to penetrate the work surface without damage, which means that the cutting surface of the cutting disc can be used optimally. The workpiece contact surface of the stop rail, which is equipped with a rubber pad, prevents it from slipping or spinning.

An additional advantageous addition to the machine according to the invention is provided by the deburring device according to claims 28 to 33. The arrangement of the deburring device designed from mechanical parts according to claim 28 and its structure according to claim 29 allow it to function and operate separately from the cutting device. The mechanical transmission element for power transmission according to claim 30 eliminates the need for an additional electric drive, which has cost-effective effects. The knee lever according to claim 31 supports the user-friendly handling of the mechanical connection and disconnection of the mechanical transmission element that acts radially on the deflection roller of the grinding device.

Finally, the power transmission technology according to the invention leads to greater safety for the user, as the mechanical hand levers of the cutting and deburring device are simultaneously the on and off switches for these units, whereby their respective rotary movement is immediately interrupted when the mechanical transmission elements are separated from the deflection roller. The dangerous high-speed running of the tools of conventional machines is thus eliminated.

The invention is described in more detail below using an embodiment. The drawings show

Fig. 1 shows the front view of the combined grinding,

Cutting and deburring machine,

Fig. 2 shows a section A-A from Fig. 1,

Fig. 3 shows the rear view of the combined grinding,

Cutting and deburring machine,

Fig. 4 is a side view of the combined grinding,

Cutting and deburring machine,

Fig. 5 the side view of a deflection or drive roller of the

Grinding device,

Fig. 6 the front view of a deflection or drive roller of the

Grinding device,

Fig. 7 the front view of a bearing block with bearing block holder for the

Revolving roller of the grinding device,

Fig. 8 the side view of a bearing block with bearing block holder for the

Revolving roller of the grinding device,

Fig. 9 the rear view of the housing of the combined

Grinding, cutting and deburring machine,

Fig. 10 is a side view into the open housing of the inventive

combined grinding, cutting and deburring machine,

Fig. 11 the front view of the housing of the inventive

combined grinding, cutting and deburring machine,

Fig. 12 the top view of the open housing of the inventive

combined grinding, cutting and deburring machine,

Fig. 13 the second side view into the open housing of the combined grinding, cutting and

Deburring machine,

Fig. 14 a front view of the worktop with grinding carriage and stops,

Fig. 15 the top view of the worktop with grinding carriage and stops,

Fig. 16 a section C - C from Fig. 15,

Fig. 17 is a section B-B of Fig. 19,

Fig. 18 the rear view of the cutting device according to the invention on

a special bearing block in working position,

Fig. 19 a side view of the cutting device in working position,

Fig. 20 a section A-A from Fig. 18 in working position

the cutting device,

Fig. 21 a section A-A from Fig. 18 in rest position of the

Cutting device,

Fig. 22 a detail of a perspective side view of the arrangement

the deburring device in working position,

where identical parts are marked with identical numbers.

In Fig. 1 to Fig. 4, a grinding, cutting and deburring machine according to the invention is shown with the essential functional features according to the invention.

Aggregates and their functional relationship to one another are shown in all four possible views of the machine. For the sake of visual clarity, parts that are not essential to the function of the machine have not been shown in detail or have only been shown in part in the drawings. In a housing 1 according to Fig. 9 to Fig. 13, preferably made of powder-coated sheet steel, the drive motor 6 is a commercially available electric motor with an output of preferably 0.75 kW, a rotational speed of 2800 rpm and a voltage requirement of 220 V, in a horizontal position to the housing base 1'" on the motor mounting plate 2" in such a way that the drive shaft 6 ¹ of the drive motor is directed towards the grinding device 7. A drive roller 7', preferably made of sheet steel, is mounted radially with its bearing openings 21"" on the drive shaft 6' in the housing 1. According to Fig. 7 and Fig. 8, the bearing block 20, made from a U-shaped steel angle, is guided on a bearing block holder 2"" of the housing 1, preferably on two steel bolts 20"'" and compression springs 20""" arranged vertically in the bearing block holder 2"", in the longitudinal legs 20' of which a fork-shaped bearing 20" is arranged at the end, which is open at the top, in which a shaft 20'" with a deflection roller 7" guided on it is mounted axially parallel to the drive shaft 6' above the worktop 5 of the housing 1. The drive roller 7' and the deflection roller 7" are designed according to the invention 6 as hollow bodies 21 with two circular side surfaces 21' arranged parallel to one another and an end surface 21" connecting them, according to Fig. 5 and Fig. 6, with an outer diameter of preferably 177 mm and a width of 80 mm. The side surfaces 21' are preferably each equipped with two radial recesses 21'" and a bearing opening 21"" running through the hollow body. As a force transmission element, an endless, commercially available grinding belt 7'" is stretched over the end faces 21" of the drive roller 7' and the deflection roller 7", preferably 75 mm wide and 1,000 mm long. By pressing the bearing block 20 with the deflection roller 7" mounted therein on the shaft 20'" against the compression springs 20""" and the bearing block support 2"" in the direction of the drive roller 7', the distance between the deflection roller 7" and the drive roller 7' is shortened, whereby the grinding belt 7'" can be easily placed on the end faces 21" from the open side of the housing 1. After the grinding belt 7'" has been placed on the end faces 21",

the bearing block 20 is returned to its starting position by relieving the pressure on the compression springs 20""" and the sanding belt 7'" is tensioned. To ensure that the sanding belt 7"' is supported securely and centrally, the shaft 20'" of the deflection roller 7" can be adjusted at an inclination angle that can be adjusted vertically to its bearing axis X by means of an adjustment device (not shown in detail in the drawings) that can be operated from the outside vertically to the shaft 20'" on a protective cover 12. The deflection roller 7" with the sanding belt 7'" is covered with a protective cover 12 (not shown in detail in Fig. 1), which is attached to the worktop 5 and to the open side wall of the housing 1 and is preferably made of powder-coated sheet steel, in such a way that a working area on the sanding belt 7'" is accessible, which is optically and functionally divided into a hard and elastic area by a support rail 7"" attached to the protective cover 12, runs transversely to the sanding belt 7'" and is not shown in detail in the drawings. For the hard area immediately adjacent vertically to the worktop 5, a sheet 7""' is arranged in a force-fitting manner on the housing 1 behind the sanding belt 7'" that is slightly wider than the sanding belt 7'". The elastic area above the support rail 7"" is formed by the hollow space below the deflection roller 7" and the sanding belt 7'" running taut above it.

The housing 1 is closed on the surface with a worktop 5, preferably made of stainless steel, as shown in Fig. 14 and Fig. 15. The recess 5' incorporated in the worktop 5 serves to pass through the bearing block 20 with the deflection roller 7" mounted thereon and the grinding belt 7'" running on it, a bearing block construction 28 according to Fig. 17 to Fig. 21 as well as two tension springs 29. At the edge of the recess 5' through holes 5""" are arranged for fastening the protective cover 12 on the worktop 5. A further recess 5" is arranged as a chip passage, on which a chip collector 3"'" made of sheet steel is arranged vertically with its opening against the running direction of a cutting disc 9""", which directly catches the chips flying off the cutting disc 9""", guides them through the chip passage 5" into a chip shaft 3'" arranged below in the housing 1, and from there into the

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1 removable chip box 3"" is mounted on the outer wall of the housing. The elongated holes 5"' machined into the worktop 5 transversely to the running direction of the sanding belt 7'" are used for the movable mounting of a sanding carriage 8. The sanding carriage 8 is mounted with a support plate 8' and with separated elongated holes 8" arranged in this, steel balls 8""" of the worktop 5 mounted on the elongated holes 5"' and is held in the centrally arranged slightly wider elongated hole 5'" from below by means of a corrugated spring screw 33 on the worktop 5, whereby the support plate 8' is movable transversely to the working surface of the sanding belt 7"' in the width of the sanding belt. On the support plate 8' of the sanding carriage 8, according to Fig. 14, a stop rail 8"" is arranged which is mounted about a vertical axis Z and can be pivoted through 180°, with the vertically movable locking pin 8'"" of which the stop rail 8"" can be locked in locking holes 8'" defined stop angles according to Fig. 15. A further recess 5"" arranged in the worktop 5 at right angles to the chip passage 5" is provided in its circular area for receiving and fastening a bearing housing 10' inserted under the worktop 5 and preferably glued into the horizontal circular area of the recess 5"" for the storage of a bracket 10" with an incorporated groove and a stop 10 inserted in the groove and rotatably mounted vertically above the worktop 5 according to Fig. 16. A stop rail 10"' of the stop 10, preferably made of stainless steel, is provided with a pin 10'"" formed centrally on its lower narrow side for storage below the worktop 5 in the groove of the bracket 10". The stop rail 10'" which is mounted above the worktop 5 so that it can rotate around a vertical axis in a range of approx. 220° is equipped in the middle with an upwardly open and vertically running cutting gap 10"" which runs from the upper edge of the stop rail to the molded pin 10"'" of the stop rail 10'" which is mounted under the worktop 5. The cutting gap 10"" of the stop rail 10"' is designed with a width and a length which ensures a straight vertical guide of a cutting disc 7""" in all defined angular positions of the stop rail 10'". At the end of the stop rail 10'" a vertically movable locking pin -]0""" is arranged parallel to the cutting gap 10"" with which the stop rail 10"' can be positioned on the worktop 5 at defined angles in a circle running around its bearing axis.

distributed locking holes 5""'. The narrow area formed in the running direction of a cutting disc 9""" at right angles to the circumference of the round recess 5"" enables the cutting disc 9""" to penetrate through the working plane A of the worktop 5. On the bearing block holder 2'"" of the housing 1, which projects beyond the worktop 5, a special bearing block construction 28 according to Fig. 17 to 21 is arranged at right angles to the running direction of the deflection roller of the grinding device 7, which serves to accommodate a cutting device 9. The special bearing block construction 28 consists of a cross leg 28' made of steel pipe and two bearing block webs 28", preferably made of stainless steel, which are preferably welded to the ends of both pipe ends of the cross leg 28'. With an axis 27 guided through the ends of the bearing block webs 28" and the cross web 28', the bearing block construction 28 is mounted vertically pivotably in the bearing rings 2""" of the bearing block holder 2"", whereby the longitudinal legs 28" have surfaces 28"" formed on one side, which prevent the pivoting range of the bearing block construction 28 beyond a vertical of 90° in the direction of the deflection roller 7" and allow it in the direction against the deflection roller 7" in a range of 10° to 12°. The structural design of the cutting device 9 according to the invention and its special bearing is shown in principle in Fig. 17, 18 and 19. A housing 23, preferably made of sheet steel, is mounted in the bearing block construction 28 with eccentrically arranged bearing flanges 25 and an axis 9'" guided in these at right angles to the deflection roller 7" of the grinding device 7, so that it can pivot vertically. The short leg of the housing 23, which is created by the eccentric bearing, is directed towards the deflection roller 7". The housing 23 is provided with an open front side 23" and an opposite closed front side 23' and is equipped with a mechanical drive in the housing interior. The mechanical drive is made up of two shafts 9' and 9" mounted parallel to each other in the housing 23 and two pinions 9"" and 9""' running on the shafts, as well as a toothed belt that serves as a power transmission element and runs endlessly on the pinions 9"" and 9'"". The toothed belt was preferably selected in a commercially available size with a stretched length of 425 mm and a width of 15 mm. The flat surface of the toothed belt protrudes on the open end face 23"

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of the housing 23 of the cutting device 9 in such a way that it is directed in the running direction of the cutting device 9 and at right angles to the running direction of the deflection roller 7" without being in contact with it. On the closed front side 23' of the housing 23, opposite the open front side 23", a commercially available cutting disk 9""" is mounted axially and parallel to the pinion 9'"" on the shaft 9 ¹ protruding from the housing 23 on one side, preferably with a diameter of 125 mm and a thickness of 1.6 mm, which is protected by a protective cover 13 to approximately three quarters of its working surface. Two tension springs 29 suspended laterally from the open front side 23" on flanges 24 on the one hand and on brackets within the housing 1 on the other hand compensate for the excess weight of the long leg of the cutting device 9, which is mounted off-center in the bearing block 28, in such a way that the Bearing block webs 28" a position of 90° and the cutting device 9 in the rest position assumes an angle of approx. 42° to the working plane A of the worktop 5 and the toothed belt has no contact with the deflection roller 7". With the hand lever 17 arranged on the closed front side 23' of the housing 23 at a right angle to the direction of travel of the deflection roller 7", the cutting device 9 with the cutting disk 9""" can be moved from its rest position at approx. 42° to its working position in a range of approx. 45° vertically up to an angle! from 0° to the working plane A of the worktop 5 and slightly below the O ⁰ axis, whereby the lower edge of the cutting disc 9""" can penetrate into the gap of the recess 5"" in the worktop 5. In the optimal working position of 0° to the working plane A, the cutting device 9 has a horizontal position in relation to the worktop 5, which is achieved by the bearing of the cutting device 9 in the bearing block construction 28 arranged higher above the worktop 5. Only when the cutting device 9 is pivoted further towards the worktop 5 does the cutting disc 9""" penetrate into the recess 5"" in the work table 5, whereby damaging penetration too deep into the worktop 5 or into the stop 10 is prevented by the limited pivoting range of the bearing block webs 28" to their vertical axis by approx. 10° to 12° and the tension springs 29 as well as by the protective cover 13 of the cutting disc 9""" is prevented. If the drive motor 6 is switched on via the electrical switch 3", the grinding device 7 immediately runs at high speed. Now the cutting device 9 is moved with the hand lever 17 from its rest position of approx. 42°

into a working position of approx. 45° to the working plane A, whereby at the same time the surface of the toothed belt, protruding from the open front side 23" of the housing 23, is pressed at right angles against the radial recess 21'" of the side surface 21' of the high-speed deflection roller 7". Now the bearing block construction 28 gives way in the operating direction by approx. 10° to 12° to its vertical axis, whereby the toothed belt cannot be pressed too tightly against the deflection roller 7 in a certain swivel range of the cutting device 9. When the cutting device 9 has passed through this short but critical range, the bearing block webs 28" swivel back to their starting position of 90° to the working plane A and the toothed belt is pressed against the deflection roller 7" by the direct leverage of the cutting device. This power transmission system ensures from the first contact of the toothed belt surface of the cutting device 9 with the side surface 21" of the The deflection roller 7" ensures a uniform contact pressure and optimal drive of the toothed belt until the contact is interrupted between the mechanical transmission element 15 of the cutting device 9 and the electrically driven side surface 21" of the deflection roller 7" of the grinding device 7. If the hand lever 17 of the cutting device is released, the cutting device 9, supported by the tension springs 29, immediately swings back into its rest position, the contact with the deflection roller 7" is interrupted, whereby the toothed belt no longer receives any energy and the cutting disc 9""" driven by the toothed belt immediately stops. The deburring device 11 according to the invention, shown in more detail in principle in Fig. 22, is formed in the direction of the working surface of the grinding belt 7'", from a support block 11', preferably made of steel, arranged to the left of the deflection roller 7" outside the work plate 5, with two bearing holes 11" and 11'" made parallel to one another in these, a bearing axis 11"" and a drive shaft 11'"", a transmission element 16 consisting of a metal wheel 16" with a groove-shaped front surface and a zero ring 16' seated thereon, preferably made of rubber, and a commercially available deburring brush 30, which preferably has a shaft diameter of max. 80 mm and stainless steel bristles arranged on its front side. The drive shaft 11'"" is in the bearing hole 11'" and on its protruding from the bearing hole 11'" to the deflection roller 7" the transmission element 16 is radially directed to the drive shaft 11"'" and to the radial

Recesses 21'" of the side surface 21' of the deflection roller 7". A deburring brush 30 is clamped radially and parallel to the running direction of the circulating roller 7" on the opposite protruding end of the drive shaft 11'"". The bearing axis 11"" is guided in the bearing bore 11" of the support block 11 and is pivotably mounted with its end protruding towards the deflection roller 7" on a longitudinal leg 20' of the bearing block 20 below the fork-shaped bearing 20" in a range of 0° to 45° to the working plane A of the work plate 5. A knee lever 31, which is pivotably mounted on brackets 31'"", horizontally and parallel to the sanding belt plane behind the sanding belt 7'" and below the deflection roller 7" with its straight area 31', is provided with a handle on an area 31" angled on one side, which can be pivoted vertically to the right of the deflection roller 7" above the worktop 5. An area 31'" angled towards the handle side also has a curve 31"" which is formed radially against the running direction of the deflection roller 7" and protrudes beyond the worktop 5 to the left of the deflection roller 7". When the deburring device 11 is in the rest position, the curve 31"" is located under the receiving block 11' and is tangent to it, whereby the latter, together with the deburring brush 30 and the transmission element 16, assumes an angular position of approx. 45° to the working plane A of the worktop 5. The grinding device 7 runs at high speed and the deburring device 11 is in the rest position. By pivoting the hand lever 18 towards the operator, the knee lever 31 with its curve 31"" is rotated away from under the receiving block 11', whereby the latter executes a pivoting movement towards the working plane A of the worktop 5, assumes an angular position of 0° and reaches the horizontal plane S. In this working position of the Deburring device 11, the transmission element 16 with the zero ring 16" makes radial contact with one of the radial recesses 21"' of the side surface 21' of the deflection roller 7", whereby a compression spring 32 mounted between the receiving block 11' and the longitudinal leg 20' of the bearing block 20 relaxes and presses the zero ring 16" uniformly and firmly radially against the deflection roller 7". When the zero ring 16" makes contact with the high-speed deflection roller 7", the rotary movement is immediately transmitted in the running direction of the deflection roller 7" to the drive shaft 11'"" of the deburring device and thus to the deburring brush 30. By pivoting the hand lever 18 away from the operator, the arc is

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31"" is moved back under the receiving block 11' and this is pressed against the compression spring 32 into its rest position of approx. 45° to the working plane A and held. The pivoting movement of the hand lever 18 immediately interrupts the contact of the zero ring 16" to the deflection roller 7" and the drive shaft 11"'" of the deburring device 11 immediately stops, which leads to the simultaneous stoppage of the deburring brush 30.

The combined grinding, cutting and deburring machine according to the invention is connected with its steel pipe socket 2' arranged in a force-fitting manner on the housing base T" via a vertically and detachably inserted steel pipe column (not shown in more detail in the drawings) to a housing stand 14, which preferably has a round circular surface and is filled with concrete, and is thus rotatably mounted. In the exemplary embodiment, the stand is equipped with a shorter steel pipe column for table installation and a longer steel pipe column for floor installation of the machine.

The weight of the complete machine without stand is approx. 17 kg, which means that it can be transported manually to the workpiece using the handle 4. The rotating housing support also enables the machine to be rotated directly to the workpiece, which is a great advantage, especially with long material.

- 16 List of reference symbols used

1 Housing, - 17 V Side walls, 1" recesses, 1'" Case back, &Iacgr; 11 f &igr; Heat extraction openings, 2 Recording devices, 2 ¹ Steel pipe socket, 2" Engine mounting plate, QfTt Traverse, O &tgr;&igr;&idigr;&igr; Bearing block holder for pulley, *&rgr;&tgr;&igr;&tgr;&igr;&tgr; Bearing block holder for bearing block construction, #^ TfTIfI Bearing rings, 3 Protective elements, 3' Dust deflector, 3" circuit breaker, 3'" Chip chute, 3"" Chip box, 3'"" Chip collection, 4 handle, 5 worktop, CTI Recess for grinding device and bearing block holder, CTI Chip passage, cn Long holes, &sgr;&igr; Recess for stop and cutting disc, CTl Locking holes, 5""" Through holes, 6 drive motor, 6' Drive shaft, 7 Grinding device, 7' drive roller, 7" pulley, 7'" sanding belt, 7"" Support rail, ~7 T I T I T Sanding belt sheet

8th grinding carriage, 8th' support plate, 8th" Long holes, 8th'" Locking and mounting holes, 8th"" stop rail, 8th'"" locking pin, 8th""" Steel balls, 9 Cutting device, 9' Wave, 9" Wave, 9'" Axis for cutting device on bearing block construction, 9"" pinion, 9'"" pinion, QTlTlTl Cutting disc 10 Stop for cutting device, 10' bearing housing, 10" Bracket with groove, 10"' stop rail, 10"" Separation gap, 10 cones, 10""" Locking pin 11 Deburring device, 11' recording block, 11" bearing bore, 11"' bearing bore, 11"" bearing axle, A >1 TITIT Drive shaft for deburring brush, 12 Protective cover for writing device, 13 Protective cover for cutting disc, 13' neckline, 13" circular areas, 14 Case stand, 15 Transmission element cutting device, 16 Transmission element deburring device, 16' NuNring,

16" metal wheel,

16'" grooved face,

17 Hand lever cutting device,

18 Hand lever deburring device,

19 Securing element on the housing,

20 bearing block, 20' longitudinal leg, 20" forked bearing, 20'" shaft,

20"" cross leg,

20'"" steel bolt,

20""" compression springs,

21 hollow pressed bodies, 21' side surfaces,

21" front face,

21'" radial recesses,

21"" bearing openings,

22 Adjusting screw,

23 Housing separator, 23' closed front, 23" open front,

23"' mounting holes,

23"" mounting holes,

23'"" bearing socket,

24 bearing flanges,

25 bearing flange,

25' shaft bearing bore,

25" pinion bore,

27 Axle for bearing block construction on bearing block holder,

28 bearing block construction, 28' cross leg,

28" bearing brackets,

28'" rings with molded surface,

28"" molded surface,

28'"" rings on free ends of the bearing block webs

29 tension springs,

30 deburring brush,

31 knee lever,

31' straight line area,

31" angled section with handle,

31'" angled area with knee,

31"" bow,

31""' brackets,

32 compression spring,

33 Wave spring screw,

A horizontal plane of the worktop, X " axis " of the shaft 20'",

Y vertical " of the housing 1, Z bearing axis of the stop 8"", W longitudinal plane of the housing 23,

V bearing axis of the pinions 9"" and 9'"", U horizontal axis of the bearing block webs 28, T horizontal axis of the knee lever,

S " Level of the deburring device

Claims (33)

Lutz Bürkner 21 October 1997 04683 Threna GM18/97 Protection claims 1, Combined grinding, cutting and deburring machine for making straight cuts and mitre cuts on solid, hollow and flat profiles made of steel, stainless steel, non-ferrous metals, ceramics and natural stones, consisting of a housing (1) with holding devices (2), protective elements (3), a handle (4), a worktop (5), a drive motor (6), a grinding device (7) with a grinding carriage (8), a cutting device (9) with a stop (10), a deburring device (11), protective covers (12) and (13), and a housing stand (14), whereby the grinding device (7), the cutting device (9) and the deburring device (11) on the receiving devices (2) of the housing (1) are arranged above the worktop (5) in such a way that they are driven by a single drive motor (6), the drive motor (6) directly drives the grinding device (7) and the cutting device (9) and the deburring device (11) independently of one another take the rotary movement of the drive motor (6) from the grinding device (7), work separately from one another and that the direction of rotation of the cutting device (9) and the deburring device (11) is the same as the direction of rotation of the grinding device (7), the rotational movement is taken from the grinding device (7) by mechanical transmission elements (15) and (16), which can be pressed independently of one another onto the grinding device (7) by means of manually separately operated hand levers (17) and (18), simultaneously with the mechanical activation or deactivation by the respective hand lever (17) or (18), the cutting device (9) or the deburring device (11) assume their working position or rest position, the combined grinding, cutting and deburring machine with housing (1) is detachably arranged on the housing stand (14) in such a way that it can be rotated about a vertical axis (Y), its respective working position can be stabilized by a securing element (19) arranged on the housing (1) and can be transported manually by means of the handle (4) arranged on the housing (1). 2. Combined grinding, cutting and deburring machine according to claim 1 , characterized in that the housing (1) has a top and two opposite sides is essentially an open base frame, the two side walls (T) of which are provided with recesses (1") and the interior of which is equipped with receiving devices (2) in such a way that it accommodates protective elements (3), the handle (4), the worktop (5), the drive motor (6), the grinding device (7), the cutting device (9) and the housing stand (14) as well as a wall plate with air slots on the one hand and a protective plate on the other hand as closing elements of the open side surfaces of the housing (1). 3. Combined grinding, cutting and deburring machine according to claim 2 , characterized in that a in the middle of the housing base (1'") arranged, protruding approximately two-thirds into the housing interior and closed thereto, is force-fitted to the housing base ( ^T ") and that the housing base (T") is provided with several heat extraction openings (T'"). 4. Combined grinding, cutting and deburring machine according to claim 2 , characterized in that in the housing (1) vertically to the housing bottom (T") and at right angles to the side walls (T) a motor mounting plate (2") is force-locked to the housing base (T") and part of the outer surface of the steel pipe socket (2 ¹ ), that a dust deflector plate (3 ¹ ) is arranged on the housing base (T") and projects out of the housing (1) through a recess (1") in a side wall (T), that a circuit breaker (3") is attached to the same side wall (T), that a chip chute (3'") is arranged in a recess (T') in the opposite side wall (T) and that the recess (T') in the chip chute (3'") is closed from the outside by a removable chip box (3""). 5. Combined grinding, cutting and deburring machine according to claim 2 characterized in that in the upper third of the housing (1) the two side walls (T) are non-positively connected by a cross member (2'") and the cross member (2'") is non-positively connected to the motor mounting plate (2") and that a bearing block mounting {2"") is non-positively arranged at right angles to the cross member (2'") and a further bearing block mounting (2'"") is arranged vertically on the cross member {2'") and the handle (4) is detachably arranged. 6. Combined grinding, cutting and deburring machine according to claim 1 , characterized in that the work plate (5) is a stainless steel plate, in which a recess (5') for the passage of parts of the grinding device (7) and the bearing block holder (2'""), a chip passage (5"), several long holes (5'") for receiving the grinding carriage (8), a recess (5"") for receiving the stop (10), locking holes (5'"") for adjusting the angle of the stop (10), through holes (5""") for fastening the worktop (5) on the housing (1) and for fastening the protective cover (12) and a chip collector (3'"") are provided and that the worktop (5) is simultaneously the upper cover of the housing (1). 7. Combined grinding, cutting and deburring machine characterized in that the grinding device (7) consists of a drive roller (7 ¹ ) and a deflection roller (7") and an endless grinding belt (7'") running along it, that the drive roller (7 ¹ ) is mounted directly on a drive shaft (6') of the drive motor (6) in the housing (1) and the deflection roller (7") above the drive roller (7') in a bearing block (20) arranged on the bearing block holder (2"") and protruding from the housing (1) on an axle (20'") and that the endless grinding belt (7'") is the power transmission element from the drive motor (6) to the drive roller (7') and the deflection roller (7") of the grinding device (7). 8. Combined grinding, cutting and deburring machine according to claim 7 , characterized in that the drive roller (7') and the deflection roller (7") hollow pressed body (21) consisting of two parallel circular side surfaces (21') which are connected to one another by a flatly formed end surface (21") which closes the circumference of the circle, and in that each side surface (21') has two radially extending recesses (21'") pressed into the cavity in a step-like manner and bearing openings (21"") in the middle. 9. Combined grinding, cutting and deburring machine according to claim 7 , characterized in that the bearing block (20) is a U-shaped Steel angle, the longitudinal legs (20') of which have parallel opposite fork-shaped bearings (20") and the transverse leg (20"") of which is connected to the cross member (2'") of the housing (1) by steel bolts (20'"") and compression springs (20""") held vertically in the bearing block holder (2""), wherein the deflection roller (7") is axparalle in the fork-shaped bearings (20") on the shaft (20'") above the worktop (5)! to the drive roller (7') mounted below in the housing (1) on the drive shaft (6') of the drive motor (6), the compression springs (20'"") press the bearing block (20) with the deflection roller (7") away from the drive roller (7 ¹ ), simultaneously tension the sanding belt (7'") resting on the end faces (21') of the drive roller (7 ¹ ) and the deflection roller (7") and in order to replace the sanding belt (7"') the bearing block (20) with the shaft (20"') and the deflection roller (7") can be pressed against the bearing block holder (2""). 10. Combined grinding, cutting and deburring machine according to claim 7 , characterized in that the protruding from the housing (1) The deflection roller (7") mounted on the bearing block (20) and the grinding belt (7'") running along it are protected by the protective cover (12) attached to the worktop (5) in such a way that only a required working surface is accessible on the grinding belt (7'") and that the shaft (20'") mounted in the bearing block (20) with the deflection roller (7") can be adjusted at an acute angle of inclination against a horizontal axis (X) of the shaft (20'") by means of an adjusting screw (22) guided vertically to the shaft (20'") through the protective cover (12). 11. Combined grinding, cutting and deburring machine according to claim 10 , characterized in that the working surface of the grinding belt (7'") in a fixed area underneath and an elastic area above it is optically divided by a support rail (7"") attached to the protective cover (12) transversely to the sanding belt (7'") and that the fixed area is arranged vertically behind the sanding belt (7'") by a plate (7'"") that is force-fitted to the housing (1) below the deflection roller (7") and is designed to be the width of the sanding belt and the elastic area is formed by the plate (7'"") that remains between the sanding belt (7'") and the plate below the deflection roller (7"). - 5 Cavity
is formed. 12. Combined grinding, cutting and deburring machine according to claim 7 , characterized in that on the in the work plate (5) parallel to the A grinding carriage (8) is arranged in elongated holes (5"') running along the working surface of the grinding belt (7'"), which is formed from a support plate (8 ¹ ) with elongated holes (8"), locking holes and fastening holes (8'") and a stop rail (8"") with locking pin (8"'"). 13. Combined grinding, cutting and deburring machine according to claim 12 , characterized in that the support plate (8 ¹ ) is mounted between Elongated holes (5'") in the worktop (5) and long holes (8") in the support plate (8 ¹ ) rests on steel balls (8""") arranged in the worktop (5) and is fastened centrally with a corrugated spring screw (33) to an elongated hole (5"') on the worktop (5) which runs parallel to the sanding belt (7'") and is adapted to the width of the sanding belt, in such a way that the support plate (8 ^? ) is movable transversely to the direction of travel of the sanding belt (7'") in an area limited to the width of the sanding belt, but cannot be lifted upwards from the worktop (5), and that the stop rail (8"") on the support plate (8 ^T ) can be pivoted about a bearing axis (Z) in an angular range of 180°, and that stop angles defined by locking holes (8'") can be set using the locking pin (8'"") which is arranged vertically movable on the stop rail (8""). 14. Combined grinding, cutting and deburring machine according to claim 1, characterized in that the cutting device (9) consists of a Housing (23), a shaft (9'), a shaft (9"), an axle (9" ¹ ), pinions (9"") and (9"'"), the cutting disk (9"""), the protective cover (13), the transmission element (15) and the hand lever (17), is mounted with an axle (26) on a special bearing block construction (28) so as to be pivotable vertically to the worktop (5), at right angles to the direction of travel of the deflection roller (7") and above the worktop (5), and that the special bearing block construction (28) is pivotably mounted with the axle (9'") in bearing rings {2""") arranged in a force-fitting manner on the bearing block holder (2'""). 15. Combined grinding, cutting and deburring machine according to claim 14 , characterized in that the housing (23) is a rectangular hollow profile with a closed and flat front side (23') and an open and semi-circular front side (23") facing outwards on two wide opposite wall surfaces, in whose wide wall surfaces receiving openings (23'") and (23"") running parallel to one another at the end and eccentrically to a longitudinal plane (W) of the housing (23) and bearing supports (23'"") raised from the wall surfaces are incorporated and that the bearing supports (23'"") are arranged in the first third of the housing (23) immediately next to the receiving openings (23'") of the open front side (23"). 16. Combined grinding, cutting and deburring machine according to claim 15 , characterized in that the receiving openings (23'") are provided on both sides with are concealed by one-sided closed bearing flanges (24) detachably arranged on the wall surfaces, in which the shaft (9") with the pinion (9"") is rotatably mounted inside the housing (23), the bearing axis (V) of the shaft (9") running transversely to the longitudinal plane (W) of the housing (23). 17. Combined grinding, cutting and deburring machine according to claim 15 , characterized in that the receiving opening (23"") on the one Housing side is closed by a bearing flange (24) closed on one side and on the opposite housing side with a bearing flange (25) open on both sides, that the bearing flange (25) is designed in the middle with an outward-facing axle bearing bore (25') and a receiving bore (25") directed towards the interior of the housing, that the shaft (9 ¹ ) with the pinion (9'"") is mounted inside the housing (23) on the one hand in the bearing flange (24) and on the other hand in the bearing flange (26), the bearing axis (V) of the shaft (9 ¹ ) running parallel to that of the shaft (9") and that the cutting disk (9""") with the protective cover (13) is detachably arranged on the end of the shaft (9 ^T ) protruding from the bearing flange (25). 18. Combined grinding, cutting and deburring machine according to claim 15 , characterized in that in the interior of the housing (23) the pinion (9"") and (9'"") endlessly guided transmission element (15) is arranged and that the transmission element (15) is a toothed belt, the flat outer surface of which protrudes in the area of the open and outwardly semi-circular front side (23") of the housing (23) and that on the closed and flat front side {23') of the hand lever (17) is arranged, 19. Combined grinding, cutting and deburring machine according to claim 14 , characterized in that the special Bearing block construction (28) is a U-shaped structure, the cross leg (28') of which is a steel sleeve, the ends of which are connected to one another in a force-locking manner by two bearing block webs (28") running parallel to one another and vertically to the cross leg (28'), that each bearing block web (28") is a flat material shaped like a ring wrench, one of the ends of which has a ring (28"') formed on it and is connected to the cross leg (28') on one side, the inner diameter of the ring (28'") corresponding to the inner diameter of the steel sleeve of the cross leg (28') and that a flat surface (28"") tapering to a point on one side beyond the ring circumference is formed on the outer contour of the ring (28'") and a closed ring (28'"") is formed on the free end of the bearing block web (28"). 20. Combined grinding, cutting and deburring machine according to claim 14 , characterized in that the bearings (23'") of the The axis {9'") guided in the housing (23) of the cutting device (9) is pivotally mounted on both sides in the rings (28"") of the bearing block construction (28) formed on the free ends of the bearing block webs (28"), and the bearing block construction (28) equipped with the cutting device (9) is additionally held by two tension springs (29), one end of which is attached to the cross member (2'") within the housing (1) and the opposite end of which is attached to the bearing flanges (24) of the cutting device (9) on both sides. 21. Combined grinding, cutting and deburring machine according to claim 20 , characterized in that the bearing block construction (28) is provided with the Rings (28'") and the steel sleeve of the cross leg (28') guided axle (27) is mounted on the bearing block holder (2'"") of the housing (1) in such a way that the surfaces (28"") formed on the rings (28'") rest on the bearing block holder (2'"") in the rest position of the cutting device (9) and form an angle of 90° with it, with the formed tips of the surfaces (28"") directed at right angles to the running direction of the deflection roller (7") •♦ » are that the bearing block webs (28") in the working position of the cutting device (9) perform a pivoting movement of approx. 10 to 12° in relation to a horizontal axis (U) directed against the circulating roller (7") and then pivot back into their starting position of 90° to the horizontal axis (U) supported by the tension springs (29). 22. Combined grinding, cutting and deburring machine according to claim 14 , characterized in that the cutting device (9) in the Bearing block construction (28) is pivotally mounted in a range of approximately 45° to 0° to the horizontal plane (A) of the worktop (5), whereby it occupies an angle of approximately 45° in the rest position and the surface of the transmission element (15) protruding from the housing (23) has no connection to the deflection roller (7") and that in the working position it runs through an angular range of up to approximately 0°, whereby the surface of the transmission element (15) is pressed at the front against the surface of a recess (21'") of the deflection roller (7"). 23. Combined grinding, cutting and deburring machine according to claim 14 , characterized in that the protective cover (13) is a disc-shaped hollow body which covers the cutting disc (9") by approximately three quarters on both sides and only exposes the required working area of the cutting disc (9"). 24. Combined grinding, cutting and deburring machine according to claim 1 , characterized in that the stop (10) consists of a bearing housing (10') with a holder (10"), a stop rail (10'") with a separating gap (10""), a pin (10'"") and a locking pin (10""") as well as locking holes (5'"") and that the stop rail (10'") with the molded-on pin (10'"") in the recess (5"") of the worktop (5) in the holder (10") guided in the bearing housing (10') on the worktop (5) is arranged so as to be rotatable about a vertical axis (T), wherein the bearing housing (10') is arranged in the circular recess (5"") of the worktop (5) and the holder (10") rotatably mounted in the bearing housing (10') is non-positively connected to the molded-on pin (10 ¹ "") of the stop rail (10'") via a groove arranged in its surface. ■": &Lgr;&Ggr;: 25. Combined grinding, cutting and deburring machine according to claim 24 , characterized in that the stop rail (10'") is a rectangular Steel body, on one narrow side of which the pin (10'"") is formed in the middle and on the opposite narrow side of which the cutting gap (10"") is arranged, which runs vertically to the direction of rotation of the stop rail (10"'), which extends into the pin formed underneath and at one end of which the locking pin (10""") is arranged so as to be vertically movable, whereby the stop rail (10'") with the cutting gap (10"") can be secured at defined angles to the cutting disc (9""") by locking the locking pin (10""") into a locking hole (5'"") of the worktop (5). 26. Combined grinding, cutting and deburring machine according to claim 6 , characterized in that the recess (5"") in the work plate (5) next to the round receiving opening for the stop (10) there is another elongated hole offset by 90° from the edge of the receiving opening, through which the cutting disc (9""") penetrates into the interior of the housing (1) in the working position. 27. Combined grinding, cutting and deburring machine according to claim 6 , characterized in that the chip collector (3"") is a one-sided open Sheet metal housing is arranged on the chip passage (5") of the worktop (5) in such a way that the open side of the chip collector (3"") is directed against the running direction of the cutting disc (9"). 28. Combined grinding, cutting and deburring machine according to claim 1 , characterized in that the deburring device (11) consists of a Bearing block (11'), with bearing bores (11") and (11'"), a bearing shaft (11"") and a drive shaft (11'""), the transmission element (16), a deburring brush (30), a knee lever (31) with holders (31") and the hand lever (18), and that the deburring device (11) is arranged axially and parallel at a defined distance to the shaft (20'") of the deflection roller (7") outside the area of the work plate (5). 29. Combined grinding, cutting and deburring machine according to claim 28 , characterized in that the bearing block (11') is a substantially L- shaped steel block, the longitudinal and transverse legs of which - &iacgr;&ogr; - parallel to one another, that the bearing block (11') with the bearing axis (11'") guided in the bearing bore (11") is pivotally mounted on one of the longitudinal legs (20') of the bearing block (20) below the fork-shaped bearing (20") in an area approximately corresponding to the radius of the deflection roller (7") and that the transmission element (16) is arranged radially on the drive shaft (11'"") guided in the bearing bore (1T") on the shaft end directed towards the deflection roller (7") and the deburring brush (30) is arranged radially on the opposite shaft end. 30. Combined grinding, cutting and deburring machine according to claim 28 , characterized in that the transmission element (16) is a Zero ring (16') which is mounted on a metal wheel (16") with a groove-shaped front surface (16'"). 31. Combined grinding, cutting and deburring machine according to claim 28 , characterized in that the toggle lever (31) is a round steel made of a straight area (31') and two areas (31") and (31'") formed at the ends and angled vertically to an axis (T), whereby the angled area (31") closed with a handle forms the hand lever (18) and the area (31'") has an arc (31"") formed radially to the axis (T), which forms the knee. 32. Combined grinding, cutting and deburring machine according to claim 28 , characterized in that the knee lever (31) with its straight Area (31') is mounted horizontally and rotatably in two holders (31'""), whereby both holders (31"'") are connected parallel to one another and at right angles to the straight area (31') of the knee lever (31) below the deflection roller (7") at the front with a force-locking connection to each longitudinal leg (20') of the bearing block (20) and the straight area (31') of the knee lever (31) guided in the holders (31'"") is mounted between the sanding belt (7'") and the deflection roller (7"), that the angled area (31") with the handle protrudes next to the protective cover (12) above the horizontal plane (A) of the worktop (5) and can be pivoted vertically and that the angled area (31'") with its curve (31"") is outside the worktop (5) above the horizontal plane (A) and below of the bearing block (11') of the deburring device (11). - 11 - 33. Combined grinding, cutting and deburring machine according to claim 28 , characterized in that the toggle lever (31) is arranged such that in the rest position of the deburring device (11) it holds the bearing block (11T) approximately at an angle of 45° to a horizontal plane (S), at the same time a compression spring (32) arranged between the longitudinal leg (20') of the bearing block (20) and the bearing block (11') is compressed and the transmission element (16) is separated from the revolving roller (7") and that in the working position of the deburring device (11) the toggle lever (31) is rotated away from under the bearing block (11') and the compression spring (32) is relaxed, the bearing block (11') is in the horizontal plane (S) and that the transmission element (16) is pressed radially against the recess (21'") of the side surface (21") of the deflection roller (7").