DE86548C - - Google Patents

Description

IMPERIAL Λ

PATENT OFFICE.

The subject of the present invention is a series of improvements to woodworking machines, for milling angular, profiled and round bars; same are:

1. the device to the workpiece slide on the right side of the machine determined for the purpose of convenient removal or exchange of the finished Workpiece;

2. the device for the intermittent rotation of the chucks when four-, six-, octagonal or twelve-sided machined objects are to be produced;

3. the arrangement for interrupting the carriage movement exactly above the knives, even in the event that the machine is to be used as a lathe.

These improvements are illustrated in the drawings.

Fig. Ι is a. Side view.

FIG. 2 is a plan of FIG. 1.

Fig. 3 is a section on the line 6-6 of Fig. 2.,

Figure 4 is a top plan view of the adjustable lifting thumbs by means of which the jigs of the workpiece can be rotated intermittently.

Figure 5 is a side view of the lifting thumbs.

The frame of the machine consists of the frames AA \ which are connected to one another by webs BB ¹ . C is the rotating knife shaft, which is provided with knives a . These knives α have cutting edges of a suitable shape. E is the drive pulley. The slide, which can be moved to and fro, consists of the plates GG \ which are connected by the webs FF ¹ . The same slides on the side frame AA ¹ . The web jP ¹ is attached to the plates GG ^v , while the web F is movable, so that the distance between the webs can be increased or decreased, as indicated by the dotted lines F ^ in FIG. The web F can be moved by means of the screw spindles dd ¹ and the sleeves gg ¹ serving as screw nuts; the spindles are driven by the conical gears ff ¹ from the shaft e .

The cross shaft JV, which is mounted in the heads II ¹ , carries the pawls 11 ¹ , which engage in notches in rings that sit on the chucks. These pawls prevent the chucks from rotating while cutting, so the workpiece can be square, hexagonal or octagonal depending on the number of cuts used in the ring.

The pawls are adjustable on the shaft JV in order to engage the same in any of the rings to be able to let. The same are clamped to the shaft JV by screws, so that they can be rotated at the same time as the shaft. Through this rotation will be brought the pawls into engagement with the rings seated on the two chucks or disengaged from them. When in use, the pawls are in the incisions of the

Rings held pressed in by means of suitable springs.

The to-and-fro movement of the slide is automatically brought about by the rotation of the screws RR ¹ by means of the change gear 5 S ^1. The shaft T is kept in constant rotation by belt operation WW \ operated by pulley E. On the shaft T sits a gear £ / which engages in the gear S ^1; this in turn engages in the transmission 5. The shaft V , which carries the gearbox X, is mounted above the shaft T. The shaft V is provided on both ends with the conical gear ζ ^ ¹ , which are connected with the screws RR ¹ . The gear X is attached to the shaft V in such a way that one of the two gear SS ¹ can intervene in it. These gears are mounted in a movable arm D ³ that rotates on the shaft T. The shaft V and thus also the screws RR ¹ are rotated in one sense or the other when one or the other of the gears S S ¹ is brought into engagement with the gear X. If both gearboxes SS ^{1 are not} connected to gearbox X , the shaft F, the screws and the slide itself will remain at rest. The screws RR ¹ are connected to the carriage by the screw sleeves Λ ⁴ a ⁵ , which are attached to the ends of the plate G ¹ .

In order to cause the carriage to reverse automatically at each end of its path, the following arrangement has been made. At one end of the lever rod ^3, the D C ³ to accesses, which by means of arms E ⁴ and E ⁵ and pin M and b ^s thumb E ³ F ³ is connected. At the end of the movement to the left, a pin or arm on the carriage comes into contact with the lifting thumb E ³ and shifts the linkage C ^{3 in} such a way that the gear 5 is detached from the gear X , while the gear S ¹ with the gear X is brought into engagement, whereby the direction of rotation of the shaft V and the screws RR ^{1 is} reversed. A similar process occurs on the right-hand side of the carriage guide by the movement of the lifting thumb F ^B. In order to effect the reversal with certainty, resilient bolts f ⁴ ″ / ⁵ are used, which ^{are guided in lugs g · 4} g ⁵ on the plates GG ^{1 of} the carriage. If the spring bolt _ / ⁴ hits the lifting thumb E ³ , so it is pushed backwards until the resistance is sufficient to push rod C ^{3 and detach notch ft 4} from plate z ' ³ , whereupon the spring expands and quickly pushes the rod to the outermost point of its path, at the same time the connection of the gear S ¹ with the gear X and the connection of the incision h ^e with the plate or the hook i ^3. The spring bolt f * slides in the eye A: ^{4 of} the projection g- ⁴ , which is longitudinally through the screw j ³ , which extends through a slot of the approach, is adjustable.

In order to stop the carriage in its movement to the right for the purpose of removing or reinserting the wood, the reversing attachment g ^{5 is} arranged displaceably on the frame G so that the spring bolt f ^{h is} brought into line with the lifting thumb F ^3. The bolt b ^h carries an auxiliary lever H ³ , the reversal approach g ^% still leads a stick or bat. In order to stop the movement of the carriage, the lever I ^{3 is} pulled outwards, whereby the reversing attachment g ⁵ is displaced so that the spring bolt f ⁵ comes in line with the lifting ^{thumb F 3} and the fabric bolt in line with the auxiliary lever H ³ . Since the material bar is now firmly seated on the attachment g ^B , the linkage C ^{3 will} only be moved just far enough to release the gear S ¹ from the gear X by placing the linkage at the shallow groove ft ⁵ on the plate i ³ remains.

In this case, both change gears are released from the gear X and the car remains in the right end position. The folding linkage C ³ is provided with adjustable weights J ³ , the size of the resistance which the notches Λ ⁴ h ⁵ h ^{ß provide} against detachment from the plate i ³ can be changed by adjusting them in the longitudinal axis.

The reversing approach g ^b is attached to an adjustable block / ³ by a dovetail-like slide; the lever I ³ rotates on the block / ³ at m ³ , its lower end is attached to the sliding reversing lug g ^h . To set the apparatus in motion again, bring the spring bolt f ⁵ in line with the lifting thumb F ³ by pushing the upper end of the lever I ³ inwards, then the notch h ^{5 is opened} by means of the lever J ⁴ the plate i ^{s released} , whereby the meshing of the gears S and X is effected.

In order to facilitate this detachment of the notches from the plate, / ^{4 is provided} with a handpiece ρ ³ . This handpiece p ^s is connected to C ³ by a rod q ³ , so that the rod C ^{3 is} lifted up a short distance by pressing the handpiece. The connections between C ³ and lever / ⁴ and the arms e ⁴ e ⁵ are slot-like to allow this movement.

In order to stop the carriage in motion so that the axes of the chucks

and the knife carrier lie on top of each other for the purpose of producing round work, if the reversal attachment g ^{5 is left} in the position in which the material bar is in line with the auxiliary lever H ³ . The machine is set in motion, which will now move inwards until the arm r ³ , which is seated at the base of rotation g ^s , hits against the lever L ³ , which is connected to e ^5. The lever L ³ is pushed down, whereby the linkage C ^{3 is} relocated and the movement of the carriage is inhibited. The trolley can now be brought back to the right end of its path by using lever J ⁴ .

A constant rotation is communicated to the chucks for the production of actual turning work by means of a screw thread t ² and a gear wheel u ' ^2. An eccentric disk is moved by a hand lever N ¹ , which in turn causes the worm t ' ² to engage in the gear u ^2. At the same time, the arm L ² connected to the shaft JV is pressed down by the lever N ^{1 in} order to lift the pawl out of the incisions in the rings.

In order to drive the worm t ² and at the same time allow the chuck to be adjusted, the upright shaft T ¹ drives the clutch V ¹ through the conical gear r ⁵ . A part of the shank U ¹ is thinner and slides during the reciprocation of the carriage in the other part into ^l.

- Interrupted rotation is given to the chucks by adjustable lifting thumbs A ² A ' ⁶ (Fig. 3), which set the sliding rack B ² , the gear C ² , gear D ² and wheels 0 o ¹ on the shaft M in motion. While the carriage is moving back and forth, the lifting thumbs A ² A ³ allow the rack B ² to slide upwards. This movement is communicated to the shaft M and the chucks. The reverse movement of the rack is caused by spring E ² , which is connected to the rack in a suitable manner. The movement of the rack upwards by means of the free connected to the gear D ² O ² thumb latches 11 ¹ of the recesses in the rings of the chuck and the reverse movement of the rack rotates the shaft M and moves the chuck. When the lifting thumb o ² returns to the position shown by the full lines in Figure 3, springs force the pawls 11 \ to engage the rings. The lifting thumbs A ² A ³ give the wood a partial twist twice during each completed back and forth movement. The rack B ' ² has rollers d ² a ³ , which extend outward in opposite directions. The lifting thumb A ² is rotatably mounted on a bolt b ^{2 of} the side frame A, the lifting thumb A ³ on a similar d ^2. The free ends of the lifting thumbs extend inward and rest on an arm c ² . The lifting thumb A ² is inclined with an inward. adjustable bar e ² and the lifting thumb A ^{3 provided} with an inversely inclined bar f ' ² .

When the machine goes from left to right, roll α ² hits bar e ² , lifts lifting thumb A ² (see the full lines in Fig. 3) and roll a ³ . goes along the upper side of the bar f ^{2 of} the lifting thumb A ³ .

The rack B ² is raised until the roller a ^{3 has passed} the bar / ² .

During the return movement of the carriage the reverse work of the parts takes place. In order to be able to communicate a stepwise movement to the clamping chucks and to machine the wood in a square or polygonal manner as required, rack B ^{2 is provided} with an adjusting device D ⁱ .

With square milling you need the whole or almost the whole length of the inclined Surfaces of the thumb rests, while for polygonal shapes part of their length sufficient.

^{In order to be able to adjust the gear C 2} with a changed distance of the clamping chuck from the knife, this is attached to the bolt E ¹ (Fig. 1). This bolt is adjustably fastened in an opening provided in F. This keeps the gear D ² on the shaft M in correct engagement with the gear C ² .

Claims (3)

Patent claims: 1. Woodworking machine for the production of angularly profiled or round objects, in which a rack (B ² J at the lower end that is slidably attached to the slide carries two rollers (a ² a ³ ) , which alternately on the back of two thumbs rotatably attached to the frame [A ² A ³ J slide, as a result of which the rack is raised a certain distance and, after the roller has left the back, is lowered by a spring for the purpose of rotating the clamping chuck through a certain angle both when the carriage goes back and forth in order to to produce angular and profiled objects. 2. A woodworking machine according to claim i, in which one of the two lugs ^{fg 5} j attached to the reciprocating workpiece slide is displaceable, and in which a bolt connected to this lug (g "" J) If the former is in a certain position against an auxiliary thumb (H ³ J , so that the rod (C ³ J) causing the reversal is raised only so far that none of the reversing wheels (SS ¹ J engages with the drive wheel (x) of the slide, for the purpose of being able to stop the slide in one end position for removing or replacing the workpieces. 3. A woodworking machine according to claim ι, in which an arm (r ³ ) seated on the displaceable lug (g ⁵ ) at a certain position of the former against a lever (L ^S J actuating the switching rod (C ³ J ) abuts, whereby the movement of the Carriage is inhibited when the axes of the chuck and the knife carrier are above one another, for the purpose of the machine, after a screw shaft is brought into engagement with a wheel seated on the chuck by turning a manually moved lever and at the same time the wheel that inhibits the rotation of the chuck The pawl is raised to be able to use it as a lathe. For this purpose 2 sheets of drawings.