CN1190050A

CN1190050A - Portable belt machine

Info

Publication number: CN1190050A
Application number: CN98104032A
Authority: CN
Inventors: G·贝尔纳; R·达梅尔茨; J·查道
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 1997-02-04
Filing date: 1998-01-27
Publication date: 1998-08-12
Anticipated expiration: 2018-01-27
Also published as: CN1078834C; GB2321611A; JPH10217093A; GB2321611B; GB9801620D0; DE19704088A1; FR2759009A1; FR2759009B1

Abstract

The portable belt sander has a housing with a switch and cables and is used to accommodate a motor for driving the rotation of the sand belt and a gearbox. Belt side guides. For fine machining of small workpieces, the portable belt sander can be retrofitted simply and quickly by virtue of the fact that the portable belt sander has at least one threaded hole accessible from the outside, one of the supports can be used for The clamping screw that secures the belt sander to the clamping side of the support can be screwed into this threaded hole.

Description

Portable abrasive belt grinding machine

The present invention relates to a kind of portable abrasive belt grinding machine that can combine and a kind of bearing that can combine with a portable abrasive belt grinding machine with a bearing.

Disclose different size and difform portable abrasive belt grinding machine in the prior art, these belt sanders can combine with bearing with clamping, the flour milling that makes the abrasive band up, wherein, light, little workpiece can and be sent to flour milling by two-handed hand-held.

Under situation about clamping on the bearing, these disclosed portable abrasive belt grinding machines have fixture.Backstop can be fixed on these fixtures, and little workpiece can be bearing on these fixtures with different angle positions adjustablely.In view of the above, workpiece can be by accurately grinding on different positions.

The shortcoming of the portable abrasive belt grinding machine that these are disclosed, can combine with bearing is, heavier and these belt sanders of these belt sanders have a unique operating position only with respect to bearing.

Compared with prior art, the advantage of portable abrasive belt grinding machine of the present invention and bearing is, weight little and with the situation of bearing combination under can adjust the different stop dog positions and the operating position of portable abrasive belt grinding machine very nimblely.In addition, the backstop by can varied location can make workpiece obtain multiple variable angle orientation with respect to the abrasive band side plate of portable abrasive belt grinding machine.

Another advantage is that bearing is made of four screws of two usefulness outer casing member interconnective, half shelly.Bearing can advantageously be fixed on the workbench on three different positions because bearing has the backstop limit three different sides, but these backstop limit side stop types rest on edge of table or similarly on the limit and prevent that bearing from moving or reversing.In view of the above, a unique screw clamp just is enough to bearing is fixed on the workbench.Particularly advantageously be, by the mandrel in the hole of four in bearing slides that accurately insert portable abrasive belt grinding machine ordinatedly and shell, can be clamped in portable abrasive belt grinding machine on the bearing easily and quickly, wherein, a central tommy screw screws in the threaded hole of slide.

Two mandrels after leaning on, that insert the rear portion of shell are used to bear and affact on the belt sander, bigger torsion when carrying out the grinding operation in fixing position.Advantageously, for fear of the overdetermination to the belt sander position, the aperture in the portable abrasive belt grinding machine is bigger than axle diameter.In view of the above, mandrel just abuts in the hole after occurring reversing slightly because of the operating force between abrasive band and the workpiece when the portable abrasive belt grinding machine grinding.Then, the continuing to reverse of portable abrasive belt grinding machine prevented reliably, because the power between workpiece and the abrasive band is always along the equidirectional effect and portable abrasive belt grinding machine is moved towards the anti-stop dog position of turning round of relative bearing.

Another advantage is, central tommy screw be one unique, be not located in the working of plastics in the bearing with losing, wherein, pass through head and sink in the bottom surface of bearing, make the upper limb that passes through head not protrude in the bearing bottom profile.Have axial dirt holding tank on the threaded of central authorities' tommy screw, also can guarantee its function so that have in the screw thread in portable abrasive belt grinding machine under the situation of dirt.

A special advantage of the present invention is that adjustable can make workpiece lead with respect to the abrasive band with dismountable angle backstop.When primary importance, angle backstop can be installed in before the tip of portable abrasive belt grinding machine on the unique fixed position.For this reason, in bearing, exist one that have a transverse groove at the one end and have a groove standard nut of fixedly inserting, circular arc at its other end.Angle backstop has a slide block circular arc, that transverse joint is arranged in the end.When assembling, at first the slide block of transverse joint and circular arc is inserted in the deep-slotted chip breaker, rotational angle backstop screws in the nut of fixedly inserting until its threaded portion of adjusting screw subsequently.At this moment, transverse joint slide into deep-slotted chip breaker following and thereby anti-limited slip block deviate from.

In the second place of angle backstop, angle backstop and tape side plate are vertically or relative side plate is adjustable is positioned on the side relative with the tip of abrasive band side plate to 135 ° of angles.The slide block of angle backstop is inserted in the deep-slotted chip breaker equally, and the length of this deep-slotted chip breaker can make slide block move to 45.By the readable angle position that goes out angle backstop of the scale on the clamping side of bearing.

Because the weight of bearing is little, bearing also can be used as revocable, firm instrument association with dress portable abrasive belt grinding machine thereon and is used for special application target.

Describe one embodiment of the present of invention in detail by accompanying drawing below.Accompanying drawing is depicted as:

The stereogram of an embodiment of Fig. 1 portable abrasive belt grinding machine of the present invention,

Fig. 2 is equipped with the stereogram of the bearing of portable abrasive belt grinding machine on it,

The exploded view of Fig. 3 bearing of the present invention,

The stereogram of the angle backstop that Fig. 4 is used for locating on bearing,

The view of the tommy screw of the fragmentary, perspective view of Fig. 5 bearing and portable abrasive belt grinding machine and embedding portable abrasive belt grinding machine,

Fig. 6,7,8 operating positions with three-favour are clamped in the bearing on the workbench and adorn the stereogram of portable abrasive belt grinding machine thereon,

The stereogram with the slide that is used for fixing the fixture on bearing of Fig. 9 portable abrasive belt grinding machine.

Portable abrasive belt grinding machine 10 shown in Figure 1 has shape long and narrow, the spray gun shape, and the front portion in its abrasive band 20 is the working face of wedge shape, and wherein, the shell 12 of belt sander 10 vertically straight stretching backward, is used to hold gearbox and drive motors.Long shell 12 is by long forming with half short shell 112,212, and this two and half shell engages at opposite joint placed in the middle 312 places.At the rear portion, shell 12 one of supporting are used for driving the switch 16 that makes abrasive band 20 motor rotating (not shown).The dust collection connection pipe 2101 adjacent with cable 18 of cable 18 and not shown dust absorption passage stretches out from the rear end of shell 12, and wherein, the regulating wheel 105 of a dust absorption passage and a rotating speed preselector is adjacent.In addition, have ventilation slot 106 at the rear portion of shell 12.In the face of half long shell 112, half short shell 212 constitutes a neutral 412 in the front portion of the wedge shape of shell 12, and abrasive band 20 so obtains guiding in this neutral 412, and promptly from side direction, the profile of abrasive band 20 and long half shell 112 is centering basically.

The abrasive band is by a slide 33 supporting, and this slide is a wedge structure, is provided with two abrasive band side plates 133,233 and at a pair of slewing rollers 31 of its tip 333 area supportings.This is rotatably supported in the fork 35 slewing rollers 31.

The housing axis of representing with chain-dotted line 512 is represented the extending longitudinally of portable abrasive belt grinding machine 10.

A knob 139 is located at the front portion of half long shell 112, in order to support the center in the steering gear 34 rapid adjustment abrasive bands 20 of slewing rollers 31 by deflection.

Be provided with a tensioning/release lever near knob 139 places, in order to change abrasive band 20, this tensioning/release lever discharges abrasive band 20 to lower swing the time.

Bearing 1010 is used to support portable abrasive belt grinding machine 10 shown in figure 2.The bottom surface 1032 of this bearing is located on the workbench 1028, makes the backstop limit of bearing abut in the distolateral last of workbench 1028 and control bearing, prevents that bearing from reversing.Among screw clamp 1024 penetrates bearing 1010 a plurality of of inserting in mouthfuls 1025 and bearing 1010 is fixed on the workbench 1028.First inserts mouth 1025 is positioned on the long narrow side 1034, and the narrow side of this length carries out the transition to the narrow side 1036 of the weak point of bearing 1010.By one in Fig. 3, be shown specifically be fastened on screw (dish-shaped screw or tommy screw), portable abrasive belt grinding machine 10 is clamped on the clamping area 1030 with the clamping area 1030 with 1032 opposites, bottom surface of its outside, abrasive band faces seat 1010.On clamping area 1030, can install two angle backstops 1014, these two angle backstops can its circular arc plastic slide block selectively in the

insertion groove

1018 and 1019 and in groove or fixing, or in a definite angular range, adjust movably.After reaching the desired position, angle backstop can be fixed by rotating pinching screw 1012.Be contained in backstop 1014 on the tip left side of portable abrasive belt grinding machine 10 and can make workpiece lean against on this backstop 1014 slightly side plate 133, thereby but hyperesthesia ground grinding is very little, that be difficult to machining and the instrument workpiece that is difficult to process by hand near abrasive band 20.When workpiece leans against on the angle backstop 1014 that right-hand, its angle position adjustable extent of being installed in line of vision are 45 ° to 90 ° (every lattice scale is 15 °), but the end face of grinding work piece or scarf.In Fig. 8, be shown clearly in this position.

Fig. 3 shows the exploded view of bearing 1010, wherein can clearly find out angle backstop 1014, slide block 1016 and structure pinching screw 1012.Also can clearly find out screwed hole 102, threaded steady pin 1020 on the slide 33 that is used for embedding portable abrasive belt grinding machine and inserting portable abrasive belt grinding machine 10 of

groove

1018,1019 and tommy screw.

Can see vertically four mandrels or the bearing pin 1022 that project upwards from clamping area 1030, wherein, from line of vision, two thicker mandrels 1022 that are arranged in left insert two corresponding mating holes 1102 (Fig. 9) of slide 33 and see from line of vision at sidepiece and are arranged in two right-hand thin mandrels 1022 insert the shell 12 of portable abrasive belt grinding machine 10 at sidepiece unshowned hole.

Fig. 4 shows the detail drawing of angle backstop 1014 and the screw 1012 and the plate 1017 that reclines.

For the

tommy screw

1020,1021 that clamps portable abrasive belt grinding machine is described, Fig. 5 shows the perspective view of bearing 1010 and portable abrasive belt grinding machine.

Fig. 6 shows portable abrasive belt grinding machine 10 and abuts in bearing 1010 on the workbench 1028 with its short narrow side 1036, and wherein, flour milling 133 stretches perpendicular to workbench.Angle backstop 1014 is installed on the side of the tip that deviates from portable abrasive belt grinding machine 10, and as described in Figure 2, this side is used for angled of grinding.

Shown in Figure 7 identical with the situation shown in Fig. 2 and 3, workpiece is arranged on it and have only an angle backstop 1014 that on bearing 1010, is provided with near the tip of portable abrasive belt grinding machine 10.

Clamping side 1030 up the time, the flour milling 133 in abrasive band 20 and side plate are vertical the placements, and flour milling 133 is parallel to work top and stretches.In view of the above, can be convenient to add section chief's workpiece, workpiece obtains guiding can being parallel on the bearing 1010 on the plate 1017 that reclines that centering that side plate 33 ground in abrasive band abut in angle backstop 1014 is provided with.Angle backstop 1014 be as the auxiliary guide setting and its angle position can not be adjusted.This is provided with the position and is suitable for cutting, flat stone mill, chamfered edge and parallel grinding and cutting.

In Fig. 8, bearing 1010 is clamped on the workbench 1028 under its long 1034 situations about leaning on of narrow side, make the flour milling 133 in abrasive band 20 be parallel to the table surface stretching, extension, and basically as shown in Figure 6, can add the little end face and the inclined-plane of section chief's instrument especially expediently.

Fig. 9 shows a side view of the slide 33 of portable abrasive belt grinding machine 10 separately, and when portable abrasive belt grinding machine 10 was contained on the bearing 1010, this side was to the clamping area 1030 of bearing 1010.In view of the above, can clearly find out and be used for hole 102 that tommy screw 1020 inserts and two, the mutually corresponding holes 331 that are provided with and 332 and the position of abrasive band side plate 133 1022 that insert for mandrel.

Claims

1. Portable abrasive belt machine (10) has a casing (12), on which there is a switch (16) and cables (18) and is used to accommodate a motor that drives the rotation of the abrasive belt (20) and a Gearbox, abrasive belt (20) can be guided by a belt side plate (331) that ensures that the abrasive belt has a particularly flat working surface of the slide, and the slide can be connected to a support (1010), characterized in that the The portable belt sander (10) has at least one threaded hole (102) accessible from the outside for screwing in the clamping screws (1019, 1020) on the support side, with which the portable belt sander (10) can be screwed into. The belt sander is fixed on the clamping side (1030) of the support (1010).

2. The portable belt sander as claimed in claim 1, characterized in that the threaded hole (102) is located on the side of the slide (33).

3. The portable belt sander according to claim 1 or 2, characterized in that the side of the portable sander (10) is fixed on the support so that the plane of the abrasive belt (20) is aligned with the support (1010) The clamping surfaces (1030) intersect perpendicularly.

4. The hand-held belt sander as claimed in claim 1, 2 or 3, characterized in that a mandrel (1022) for inserting the slide (33) from the side is provided on the support (1010).

5. The portable belt sander according to claim 1, 2, 3 or 4, characterized in that a mandrel (1022) for inserting into the housing (12) from the side is provided on the support (1010).

6. According to the portable belt sander according to any one of claims 1 to 5, it is characterized in that the support (1010) has a plurality of holes for fixing the support (1010) on the workbench (1028) at different positions. ) The insertion port of the clamping device, such as the insertion port of the screw clamp.

7. The hand-held belt sander as claimed in one of claims 1 to 6, characterized in that the support (1010) can be fastened to the table (1028) in three different support positions.

8. Portable belt sander according to one of claims 1 to 5, characterized in that the clamping screw with a through head is embedded in the contour of the bottom surface (1032) of the support (1010) and threaded with it The part (1019) passes through the clamping surface (1030) of the support (1010), enters the portable belt sander to be clamped and is firmly tightened on the support (1010), accordingly, the support can be The seat (1010) is flushly placed on the workbench (1028).

9. The hand-held belt sander as claimed in one of claims 1 to 8, characterized in that on the clamping surface (1030) of the support (1010) there is at least one seat for accommodating an angular stop (1014). and slots (1018, 1019) for angular stops (1014) to move.

10. The portable belt sander according to one of claims 1 to 9, characterized in that at least one adjustable angular stop (1014) is provided on the clamping surface (1030) of the support (1010) .

11. The portable belt sander according to any one of claims 1 to 10, characterized in that the support (1010) is hollow and consists of two half-shells, which can be connected to each other by screws. A box made of shell parts.

12. The support (1010) for clampingly supporting a portable belt sander (10) according to the preamble of claim 1 on its clamping surface (1030), characterized in that the support (1010) has a clamping device (1020), with which the side of the portable belt sander (10) can be fixed on the support, so that the plane of the abrasive belt (20) and the clamping of the support (1010) The faces (1030) intersect perpendicularly.

13. The support as claimed in claim 12, characterized in that a mandrel (1022) for lateral insertion into the slide (33) of the hand-held belt sander (10) is located on the support.

14. The carrier according to claim 12, characterized in that a mandrel (1022) for lateral insertion of the housing (12) is located on the carrier.

15. Stand according to any one of claims 12 to 14, characterized in that there are a plurality on the stand for fixing the stand (1010) on the table (1028) in three different positions The insertion opening of the clamping device (1024) on the top, such as the insertion opening (1025) that the screw clamp enters.

16. The support as claimed in one of claims 12 to 15, characterized in that a clamping screw (1020, 1021) which can be screwed into the belt sander (10) to be clamped is in particular of its through-head construction The driving part is embedded in the contour of the bottom surface (1032) and passes through the support (1010) with its threaded part, protruding from its clamping surface (1030) into the belt machine to be clamped, especially the portable belt machine ( 10) and is firmly held on the support (1010), whereby the support (1010) can be placed flush on the workbench (1028).

17. The stand according to one of claims 12 to 16, characterized in that the stand (1010) has at least one angular stop on its clamping surface (1030) for receiving an adjustable clamping (1014) and the grooves (1018, 1019) for the movement of the angle stopper (1014) and the support (1010) are a hollow box made of two half-shell-shaped shell parts.