DE7105780U - Automatic contouring and shaping machine - Google Patents

Description

Aa 203

Utility model registration

of the company

Jünada Company Limited, 200, Ishida, Isehara-machi,

tiaka-gun, Kanagawa-ken (Japan)

Automatic contour and Formgebun _b smaschme

pie invention relates generally to a Metailschneide- ^ aschine, in particular to -a machine for processing or shaping of iVerkteile, such as especially for shaping trimming matrices and the like. ,, The workpiece compared to a band saw or a similar cutting tool exactly over a prescribed 3working £ be moved away.

The invention is primarily based on the object of a Contouring and shaping machine in structurally expedient iveise to train so that the work table with this workpiece to be fixed is fixed and the workpiece is constantly held in a horizontal fosi ^ cion

can, while the machine frame or the machine body with the P.wheels arranged thereon or the like. for the storage of a band saw or ei.vs cutting tool opposite the Work table so movable, xst, that the profiling machining can be carried out automatically and precisely under an evenly externally applied force. At the same time A precise and reliable control of the machine is achieved by means of a button or postform control, the insertion and replacement of tools is made easier and the machine can be set up and moved quickly and easily on the respective working conditions.

According to the invention, the machine has a machine bed with a work table and one pivotable on the machine bed mounted machine frame with multiple wheels for a band saw that can be fixed in its position.

In the machine according to the invention, the machine frame or the machine body can be pivoted or tilted relative to the machine bed and the work table, wherein the workpiece table with the workpiece on it remains in its horizontal position. To swivel the Machine frame or the like. a spindle can be provided which is rotatably mounted in the machine bed and in thread engagement with a spindle nut of the machine frame. Since the cutting tool or the band saw with the machine frame pivoted and the latter can be set in the desired inclined position, the le feed

and transverse movements of the workpiece with uniform external force are carried out with the result that the profile-giving
Processing can be done automatically.

According to a further feature of the invention, the work table has two carriages which can move transversely with respect to the running direction of the saw and to one another, with a turntable lying thereon and which can be rotated in both directions of rotation. In a structurally expedient embodiment, a frame carrier or the like is on the work table. attached to which the one of the two mutually perpendicular movable and mutually supported carriages
is movably mounted. To rotate the turntable in both directions and to stop the turntable
Occasionally an electric motor is provided. Is essential before
all that the turntable opposite the direction of movement of the saw in and out movements in the two perpendicular to each other
can perform standing horizontal spatial directions. Its rotational movements in the two directions of rotation can be automatically or the like by means of a control cam feeler mechanism. carry out. The curve is preferably scanned by means of a feeler needle or a stylus
Or the like., This controls the rotation of the turntable in the forward and backward directions by the contour of a
Scans template, which can be attached to the work table, for example by pinning or gluing. In this way, an automatic cutting process can be carried out.

According to an advantageous embodiment of the invention is

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for the forward and backward movement of the turntable Pair of setting actuators i ^ distance opposite one another provided, with a with between the actuators the stylus cd.dgl. of the automatic!. "guiding mechanism ζ ussnuneaaktivende device is arranged, which by Contact with the actuators under the action of the automatic tracking mechanism, the rotation of the turntable in Brings about forward and reverse direction. Preferably is here another pair of actuators for shutting down the electric motors that drive the saw and the turntable provided, two with the button of the automatic tracking mechanism operatively connected links between the two pairs of actuators are arranged, of which one link with the one, the rotation of the turntable controlling pair of actuators and the other member with which the shutdown of the electric motors of the saw and the Turntable producing pair of actuators cooperates.

According to a further feature of the invention is on the machine frame a device for adjusting the saw band tension is arranged. Advantageously for this purpose is a Provided the spring between the driven, in the interior of the machine frame displaceable wheel of the saw band and a v / jderlager is clamped in such a way that a display the saw band tension is obtained in accordance with the elastic deformation of the spring and thereby the adjustment of the saw band tension is facilitated. Advantageous in this regard

is in particular e_ne- arrangement in which an I-old or the like on the machine frame. is attached, on which a carriage, which carries one of the rotatable wheels of the saw band, rotatably with respect to its axis, but is displaceable in the vertical direction on a vertical guide, with an adjustment spindle being provided for Yertikalbewe = _ mg, which is inserted into a spindle thread in engages the lower area of the slide. The said spring is clamped between the holder and a spring bearing mounted on the spindle , which absorbs the saw band tension and shows it through its deformation. It is advisable to assign a tension display device to the spring abutment which has an actuator carried along by the spring abutment.

According to a further feature of the invention, a housing is arranged on the machine, which as a supply housing takes up a certain number of saw bands and is movably arranged at an appropriate point for stocking the saw bands on the machine so that the housing is in the vicinity a cutting or cutting tool for "Le saw bands brought we ^ ~ η to a desired length of the Cut off the saw band if necessary. A Keßinstrument can be provided, on which the required Length of the saw band can be measured. A saw container housing is a preferred embodiment of this device arranged horizontally pivotable on a cold, which in turn pivotable horizontally on the machine frame

is stored, the saw container housing one or more Saw housing, from which the desired saw can be pulled out to the cutting part of a sawing device located on the machine frame.

According to a further feature of the invention, the machine an upper saw guide mechanism, which in the vertical direction, in the forward and backward direction, or in a Direction parallel to the width dimension of the saw band and to the left or to the right, i.e. in a direction towards the

surface of the saw band and can be moved from this. So that the clamping gap can be adjusted depending on the width or the thickness of the saw band used in each case can, a fine adjustment device is provided, with which the saw holder members in the forward and backward direction or can be adjusted in a direction parallel to the thickness dimension of the saw. It is also advisable to have a Provide lower saw guide mechanism, which is conveniently located below the work table and in the same:. /: - ise like the upper guide mechanism, i.e. in can be adjusted in the vertical direction, in the forward and backward direction and in the lateral direction to the left and to the right, whereby the distance between this guide mechanism and the underside of the workpiece can be adjusted in the desired manner.

According to another feature of the invention is on top the lower saw guide mechanism is a push-button

the electrical switch arranged by deo.itn actuation when the cutting process is finished, the machine is automatically stopped.

Further features of the invention are set out in the individual claims "Qiifcrofiilrpf and - η der" na / "h fri 1 u-onHon Ros ^ hruihnncf rios in

the drawing illustrated embodiment of the invention explained in more detail. In the drawing show:

1 shows the machine according to the invention in a front view;

Pig. 2 shows the machine according to FIG. 1 in a side view, partially in section;

3 shows the machine according to FIGS. 1 and 2 in a front view, partly in section, the tilted position of the machine frame being indicated;

Fig. 4 is a plan view of the frame of the work table the machine according to the invention;

Fig. 5 is a plan view of one in the fore and aft directions movable slide of the work table of the machine according to the invention;

FIG. 6 shows a plan view of one on the slide according to FIG. 5 arranged, second slide, which is perpendicular to the slide according to FIG. 5 (to the left and to the right) is movable;

Fig. 7d © ⁿ turntable in plan view;

Fig. 8, on a larger scale, an end view of a device for tensioning the saw band and for displaying the Saw band tension, partly in section;

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, 15

Pig. 9 shows a cross section along line 9-9 in FIG. 6;

10 shows a saw receptacle on a larger scale and in a front view, which is movably arranged on the machine frame, parts of the latter from Are omitted for the sake of clarity;

Fig. 11 is a cross-section along line 11-11 of Fig. 10;

Fig. 12 is a schematic top view of the oägnahmebehälcer in its various pivoting positions with respect to the machine frame;

Fig. 13 on a larger scale and in front, partially in section the upper saw guide u-d. sinus with the curve scanning and control mechanism. .s, where parts the same have been omitted for the sake of clarity;

14 shows the mechanism according to FIG. 13 in plan view, partially in section, parts of the mechanism also being omitted here for the sake of clarity are;

Figure 15 is a cross-section on line 15-15 of Pig x 14-; 16 shows a front view, partially in section, of the lower saw guide mechanism with an automatic stopping mechanism ;

FIG. 17 shows a cross section along line 17-17 of FIG. 16; Fig. 18 on a larger scale a plan view, partly in Section of the mechanism shown in Fig. 16, with parts of the same for the sake of clarity are omitted;

19 shows a cross section along line 19-19 of FIG. 16; Fig. 20 is an electrical circuit diagram of the electrical

Circuit for driving the workpiece table; 21 shows a perspective view of a metal fitting,

trize (ram, mandrel or the like.) and a die as typical example for the workpiece machining of the machine according to the invention is intended;

Fi ^. 22 the workpiece according to FIG. 21 in cross section; 25 shows the workpiece according to FIG. 21 in plan view.

In the drawing, the molding machine according to the invention is denoted generally by 10. As can be seen especially in FIGS. 1 to 3, the machine body or aas machine frame 14 can be tilted relative to the bed or foundation 12 of the machine and can be locked in the various pivoting and tilting positions a saw wheel 16 or 18 is arranged, the wheel 18 being the drive wheel and ias Had 16 the driven wheel. An endless saw band 2G runs around these two strikes 16 and 18, which is kept under the desired tension by means of a saw band tensioning device 22. The tensioning device is assigned to the bearing of Hades 1-5 and is equipped with a tension display device 24. A saw receptacle 26 is arranged on the pivotable or tiltable machine frame 14. Furthermore, an upper saw guide device $ 0 with a curve scanning

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.ft

and guide mechanism $ 2 in the area of the machine frame 14 arranged so that this device extends from above in the direction of a work table 28, the is arranged on the top of the Mai-xriiner.betts 12. Although not shown in Figs. 1 and 2, is ours Saw guide device J4 provided below the Work table 28 opposite the upper saw guide device 50 is arranged. This lower saw guide device 34 is provided with an automatic stopping mechanism which is automatically activated when the sawing process is finished.

The individual components and devices of the machine according to the invention are explained in more detail below.

As before? .Allem FIGS. 2 and 3 show, the machine frame 14 consists of an upper housing 36i which receives the driven saw wheel 16, a lower housing 38 in which the (not shown) electric motor for driving the Saw and the driving saw wheel 18 are arranged, and from an intermediate housing 40, which the upper housing 36 with the lower housing 38 connects. The lower housing 38 is located inside the machine bed 12; it carries on on its top a pair of bearing and fitting pieces 42 and 42 '. The latter have molded dome-shaped recesses into which spherical connecting pieces 44 and 44 ', which are arranged on the bed 12, enclose. That way is the machine frame 14 is mounted pivotably or tiltably with respect to the machine bed 12.

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A Spinde1 nut is used to pivot the machine frame 14 48 provided with a side extension 50 in a bore 46 fits into the lower end wall of the lower Housing 38 is drilled. For fastening the approach 50 in the bore is a twin engine 52 on that Threaded end of the neck screwed on. A feed-in spindle 58 engages through an opening 54 on the left side wall of the machine frame 14 through. The spindle can be rotated in a spindle bearing 56, but cannot be displaced in the longitudinal direction held =, The spindle 58 has at its one End of a threaded section which is in threaded engagement with the threaded bore of the spindle nut 48. At the other At the end, the spindle carries an actuator in the form of a handwheel 62.

The end wall of the lower housing 38 carries a threaded rod 64 which passes through an arcuate slot opening 66 of the machine bed 12 protrudes outwards. A nut 68 is screwed onto the protruding end of the threaded rod 64, with which the tiltable machine frame can thus be determined in any inclined position. To the machine frame tilt, the nut 68 is first loosened before the spindle 58 is actuated.

According to FIGS. 4 to 7, the work table has a frame 70, a block or slide 72 which is movable in the forward and backward direction, furthermore a block or slide 74 which can be displaced in the left and right direction.

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bar. is and a turntable 7 ¹ - on. The frame yC consists of a rigid lattice frame, which is made up of steel profile rails 78, 80 and 82 and flat steel rails 84 and so together. this can be seen in FIG. This frame is attached to the top of the machine bed 12. The scalloped profile rail 78 of the frame has a guide slot for guiding the slide 72. The latter also consists of a rigid Gi zt errahmen which, according to FIG. 5, is composed of four steel profile bars 90, 92, 94 and 9 & . On the underside of the profile bars 90 and 92 guide rollers 98 are arranged, which enclose in the guide slot 88 of the frame 70 and are guided therein. In this way, the carriage 72 can perform precisely controlled movements in the fore and aft directions. On the underside of the slide 72 six crank pins or pin bearings are arranged, which slide on the profile rails 78 and 82 of the frame 70, so that the streak 72 performs a uniform, shock-free displacement movement. The profile rail 90 has on its upper side a guide slot 102 which runs transversely to the guide slot 88 and in which the block or carriage 7 ^ is guided. A drag anchor or a driver 104 or the like is attached to the rail 90. attached to which a pulling or pulling device, such as a weight or a torque motor is connected, which, which is not shown in the drawing, is mounted on the flat bar of the frame 70 so that it can cause a controlled movement of the carriage 72 .

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The block or carriage 74, which is displaceable perpendicular to the 'carriage ' 2, has a plate 106 according to FIG the carriage 74 - precisely controlled displacement movements to the left and to the right. On the plate 106 six pin bearings 110 are also arranged, which slide on the profile rods 90 and 92 of the slide 72 and contribute to the fact that the plate 1C6 relative to the slide 72 can perform a uniform and shock-free sliding movement in the longitudinal direction of the guide ^ slot 102. A guide rail in the form of an annular recess 112 on the top of the plate 106 is used to guide a turntable 7b. A ball ring consisting of steel balls 116 is arranged on the ring-shaped guide rail 114. The ring-shaped inner part of the plate 106, which is enclosed by the inner running ring of the guide rail 112, is removed by punching or the like.

As FIG. 7 shows, the ring-shaped rotary table 76 has on its underside a likewise ring-shaped collar or pin projection 118 which engages in the guide rail 112 and is supported by the ball ring 116 resting against it and is guided in a rolling manner. With the turntable 76 a servomotor 120 is drivingly connected, which is attached to the carriage 7 ^ - and drives the turntable 76 via a belt drive (not shown), so that the turntable in

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can be rotated in both directions of rotation and fixed in any rotational position. The servo motor 120 can be controlled via signals which are supplied by a cam scanning and guiding mechanism 32 which scans the outer contour of a stencil fit _? which is connected to the workpiece M by Lütsn or in some other way. This is explained in more detail below.

The saw tensioning device 22 with the sawing tension display device 24 is explained in more detail below with reference to FIGS. 8 and 9. In the interior of the upper housing 36 of the machine frame, a support bracket or a holder 122 is attached, which has an approximately hexagonal outline shape in elevation ". Correspondingly, two lower brackets 126 and 126 'are provided in the lower area of the holder 122 in an aligned position with the upper brackets An approximately H-shaped or a frame-shaped slide I30 is displaceably guided on these guide rods and has a bearing 132 in the upper area for the driven saw wheel 16 (not shown in FIG. 8) An eye 136 is integrally formed on the slide I30 and is provided with an internal thread 134 (FIG. 9) in section 140 in the thread 134 of the eye 136

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screwed while your lower thread-free shaft in a guide bore 144 of a centering piece 142 with engagement a finely machined guide sleeve 146 is performed. The centering piece 142 is at the lower end of the holding plate arranged in the middle. Between a flange 147 which is in the middle the adjusting spindle 158 is integrally formed, and a spring abutment 148, which can be moved on the spindle 1 $ 8, is a thrust bearing 150. A spindle 158 encompassing Spring 152 is of relatively large spring force clamped under tension between the spring abutment 148 and the centering piece 142. On the underside of the centering piece 142 sits a resilient buffer piece 154 made of rubber or the like. with a protective cover 156 · The adjustment spindle 138 carries a handwheel 1S8 at its lower end. which is connected to the spindle by means of a bolt 160. An L-shaped metal bracket 162 is at the bottom of the lower console 126 attached. A lever 166 is pivotably mounted on this metal holder 162 by means of a hinge pin 164. The lever 166 carries at one end a projection 168 which is inserted into a recess or notch 170 on the underside of the Spring abutment 148 surrounds and thereby limits a rotational movement of the spring abutment. At the other end of the lever 166 is via an intermediate connection 172 a measuring weight or a pendulum I76 suspended, which in a guide sleeve 174 is performed. Referring to Fig. 9, a window 178 is through the Retaining plate 122 drilled through in the vicinity of the spring abutment 148. The window is closed by means of an electrical insulating

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Piece 180 covered. On the inner surface of the insulating piece 180, an electrode 184 is arranged so that it is in contact with a copper rivet 182, which is arranged on the top of the cup-shaped spring abutment 148. With the Electrode 184 is connected to an electrical conductor 1So, the is connected to a microswitch (not shown). AC low voltage is applied to the holding plate 122 created. The electrical circuit is designed so that the saw's electric drive motor is switched off, when the electrode comes into contact with the copper rivet.

In the following, in connection with FIGS. 11 and 11, the saw blade container device 26 is explained in more detail a the intermediate housing 40 of the machine frame 14, a saw blade cutting tool 1öö is attached. For cutting the saw band 20 this is between a pair of cutting edges 190 and 192 brought, whereupon the saw band is cut off by depressing a lever 194. A saw blade housing receptacle 198 receives one or more saw housings 196, each of which contains a spirally wound saw band 20. The container 198 is freely pivotable about a vertical axis 204 stored, which is held on two parallel support arms 200 and 202, The two support arms 200 and 202 are in turn at their other ends pivotably mounted in fork bearings which are fastened to the machine frame 14.

Due to the arrangement of these two pivoting devices, the housing 198 moves into the desired horizontal position.

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position, for example in position X, in which a saw band 20 is cut, or in positions Y and Z, in which the saw bands are in their storage position (FIG. 12). The housing 198 consists of a side wall, a top cover wall and a bottom wall, these * än-, "-. J -. _A "TT

£ U c icui o

a vertical cylinder liner 210 is fastened in the center of the upper cover wall and the bottom wall by welding. The individual saw band housings 196 are ring-shaped and sit with a fit on the cylinder liner 210 _1, as can be seen in FIG. 11.

Numerous different saws 20 with different saw widths are used for the sawing process. In the saw housings 176 des BeuaxbcrS 171.Sj-Hu. the V <3I * SCIlj.Svi.enOn ηΓνθΠ u.S ^ Saws included, so that each desired 8äg £ from the Container or housing can be removed :: can. The individual stacked saw housings 196 are within the Container 198 fixed by means of a pin 214, the through diametrically opposed bolt holes L "! 2 of the Cylinder liner 210 is inserted through it. The cylinder liner 210 shows at intervals of a few k ^ lime tern eijc. 3 Mehrzanl bolt holes 212 arranged one above the other, so that each number and stacking height of the saw housings 196 fix them can be. To the saw housing 196 on the cylinder liner 210 to be reliably fixed, a pressure bar 216 is inserted between the pin and the upper saw housing 196

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set, while on the bottom wall of the container 198 a elastic base 218 is arranged on which the stack of saw housings is supported.

13 to 15, the structure of the upper saw guide device 30 and a cam follower guide device 32 can be seen. The upper saw guide device 30 has an upper guide column 220, a bearing piece 223 and a guide block 226. The guide column 22G is attached to the upper housing 36 of the machine frame 14 in such a way that it protrudes therefrom in the direction of the table 28. It is freely rotatable and vertically adjustable and can be set in any desired setting. The guide block 226 is connected to the underside of the bearing piece 223i by means of a conical bolt 222 at the lower end of the guide column 220 by means of screw bolts 224 in such a way that the guide block 226 is forward and backward in relation to the direction of travel of the saw 20 or as shown in FIG 15 can be adjusted to the left and to the right. The guide block 226 can be fixed in any setting position. On the end face of the guide block 226, a mushroom-shaped or plate-shaped saw pressure roller 228 is rotatably mounted in a double roller bearing 229 in order to prevent deviations of the saw band 20 towards the rear. Below the pressure roller 228, two saw holders 230 are arranged, which can be displaced forwards and backwards in relation to the running direction of the saw 20 (FIG. 14). The rear parts of the saw holder engage in a lower, rear recess of the guide

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2 (o

rungsblock.T 226 a. On the backward protruding inde is a sliding plate 236 via screws 232 and pins 234 · arranged. A screw 240 with a head 24-2 engages through an opening 238 made at the top of plate 236 is drilled. The threaded shaft of the screw 240 is in Threaded engagement with the rear of the guide block 226. A button 24-4 is with the protruding head portion 24-2 connected by a pin 24-6.

The adjustment mechanism of the cam scanning device 32 has a holder 24-8 which is slidably guided on the upper guide column 220 above the bearing piece 223. A rear cover plate 254- is attached to the block-shaped holder 24-8 by means of a plurality of bolts 252 to define a recessed portion 250 on its rear side wall and on the free end of the recessed portion 250. One end of a support arm 256 lies between the recessed part 250 and the cover plate 254- _{v in} such a way that the arm 256 can be displaced in its longitudinal direction. The arm 256 has an inclined upper end surface 258 which can come into contact with an inclined upper surface 260 of a block 262, which in the space formed by the recess 250 and the cover plate 254- by means of countersunk screws 264- on the holder 24-8 is attached. By tightening the screw 264- by a certain amount, the block 262 is moved to the inside of the holder 24-8, its inclined surface sliding on the inclined surface of the support arm 256 under pressure. In this way, the support arm 256 is under surface pressure

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with four in Fig. 13 on the right. Side lying wall aer recess 2pO and the lower wall thereof brought and thereby while maintaining its displaceable Jt "it is set in the longitudinal direction; whereby due to the surface pressure between the right and lower wall of the recess 250 and the inclined surface 250 a flutter u.es support arm is prevented.

Hit the free end of the 'support arm 2p6 is by means of several Bolts 266 and pins 268 the cam follower 32 so connected. That they go towards the front of the saw 20. is directed. At the other end of the support arm 256 is a plate 270 attached (Fig. 14 and 15), which is located on the rear Side of the holder 248 extends transversely to this. An adjusting screw 274 reaches through this plate 270 urvd is screwed into a countersunk hole 272 in the holder 248. An adjusting screw 282 extends through an elongated hole 276 of the cover 254 and of the support arm 256; she is in a threaded hole of the holder 248 is screwed in such a way that it lies with its end against the peripheral surface of the guide column 220 (FIG. 14). The holder 248 can be opposite the guide column 220 by loosening and tightening the adjustment and Adjust clamping screw 282. The cover plate 254- has an arm extension 284 on its underside, which extends obliquely towards the front. In the front area of this Arm extension 284 another adjusting screw 286 is screwed in, the free end of which rests against a ring 288 or the like. can be brought to the rear of the

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tenwand of lagerstiicris 223 is arrange is ζ.

How especially? Ig. 13 shows, the housing 290 of the curve building and guiding device 32 is attached to the front end of the arm 2p6- This C-housing has two blocks 292 and 294 or the like inside. made of an electrically non-conductive material, blocks 292 and 294 are spaced apart and attached to the top of the housing so that they hang vertically therefrom. On the facing sides of the blocks 292 and 294, two upper electrodes 296 and 298 and two lower electrodes 300 and 302 are arranged in pairs so that they can be adjusted relative to one another. The upper electrodes 296 and 298 are connected to the terminals c and a of the circuit diagram of FIG. 20 via leads (not shown), while the lower electrodes 300 and 302 are connected to the terminal d via leads (not shown).

A housing section 304 consisting of a sheet steel channel profile is suspended from the underside of the housing 290 arranged, which receives an actuating lever 306 ius non-conductive material, which is connected to a lower support shaft 308 via a miniature double rolling element bearing 310, so that it moves to the left and to the right as shown in FIG can be pivoted. A block 316 with a feeler needle J14 attached to it is pivotably connected via an axis 318 to a bearing block 312, which is at the lower end of the operating lever 306 is arranged. A spring 324 is

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710571017.2.72

positioned between a pin 320 inserted in the block 316 and a pin 322 under tension extending into the circumference of the operating lever 306 is inserted (Fig. 13). The block 316 is in a substantially horizontal position held when a stop pin 326, which is in an opening of the Lagex-biucka 312 eifi ^ öäöt & t, is in contact located at block 316. If the stop pin 326 is removed, so the Llock 316 pivots together with the feeler needle 314 about axis 318 under the action of spring 324 up.

A metal plate 328 is fastened to the upper end of the actuating rod 306 and is connected via a line to the terminal b of the circuit according to FIG. The metal plate 328 reaches through the bottom of the housing and protrudes upwards into the gap between the upper electrodes 296, 298 and the lower electrodes 300, 302. As shown in FIG , 298 and the lower electrodes 300, "302 contact pieces 330, 33O ¹ or 332, 332 ^1. The actuating coil 306 has a recess in the middle area in which a spring 342 lies, which is under tension between an in the upper area of the Pin 33 ^ attached to the recess and an arm 340 of a selector lever 338, which is attached in the lower region of the recess via a pivot 336. Between the selector lever 538 and the hollow housing extension 304 is a corrugated washer.

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be 344 arranged so that the selector lever with a certain Frictional resistance to the housing extension 304 is held. If the selector lever 338 according to FIG. 13 to the right or turned to the left, the operating lever 306 is accordingly tilted in the corresponding direction =

16-19 are details of the lower saw guide mechanism 34 and the automatic shutdown mechanism. A support 348 with a U-shaped cross section is on frame portion 346 of lower housing 38 of the machine frame 14 by means of several screws 350. A slide 352 is located in the interior of the support 346 arranged vertically displaceable, between the outer surface of the leg 355 of the slide and the opposite Inner surface of the support leg a gap 354 (Fig. 17) V3r remains. One by means of a screw bolt 359 Clamping piece 356 attached to the support has an inclined surface 357 which rests against the inclined end face of the leg 355 lays. In this way, the slide 352 can be displaced vertically inside the U-shaped support 348 and can be set in any desired setting. An operating lever 368 is in a groove 362 of a console $ 60 inserted that extends from the support 348 to the side. The lever is pivotable about a hinge pin 364; it engages with its end in a hole 372 in the other leg 370 of the slide 352. This lever end is at 374 forked, where the fork is in engagement with one

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Adjusting bolt 376 which is fastened inside the bore 372. A movable block 378 is mounted on the upper side of the slide 3-2 by means of screws 380, which block 378 can be displaced to the left and to the right according to FIG. 16 and can be fixed in any desired setting position. A Säaeführun ^ sbiock 382 is mittclc barking J80 axi the Obersei ^r - ^ 6 ^ 2 of scnieDers mounted so that it can be shifted in accordance with Figure 16 to the left and to the right and fixed in any position..

The saw guide block 382 carries a saw pressure roller 386, which prevents deflection of the saw and can rotate with the running saw band 20. In an opening of the saw guide block 382 above the roller 386 there is a pair of saw holders 388, 388 'displaceably a ... _o . On the mutually facing sides of these saw holders 388, 388' are diamond plates 390 , 390 'Soldered on. The saw halves 388 and 388' are coupled by means of a pin 392 (FIG. 18) so that they can protrude downward by the same amount from the top of the block 382 elastic body 396 is pressed towards the holder 388 ', the elastic body 396 being clamped between the side wall of the holder 388 and an adjustment screw 394 which is screwed into a threaded hole on the side wall of the block 382. In this way, the saw 20 held in place by the holders 388 and 388 ', and an adjustment screw 398 is located on the saw guide block 382 (FIG. 18) so that the saw holders 388 and

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588 'can be adjusted in the longitudinal direction of the saw 20.

In a groove 400 on the top of the saw guide block $ 82 are additional guide blocks by means of screws 404, 404 " 402 and 402 'adjustable so that they form a gap, which is equal to the thickness of the saw 20. Diamond pads LLuu τυο o-LüCL sn den ein3iic. £ r SUgCv; anα, ΐοΐι widen! laciien

of blocks 402 and 402 'soldered. A block 408 is attached to the rear of the two blocks 402 and 402 'by means of two screws 410, a diamond pad 412 being soldered in the middle of the upper wall surface of this block opposite the gap formed between the two blocks 402 and 402' (Fig. 18 ). From the top of the guide blocks 402 and 402 ', deep holes 414 and 414' are drilled into the blocks, with springs 4-16 and 41o ¹ sitting in these holes, which are mounted on pins 420 and 420 'made of insulating material, such as synthetic resin material or the like. " act so that the upper ends of the pins protrude out of the bores over the surfaces of blocks 402 and 02 '. In the lower area, each pin 42G, 420 * has a tapered zone 422, 422 ', with a metal sleeve 424 or 4-24' being arranged above these zones 422 and 422 '. From the front of the two guide blocks 402 and 402 * are .jöcher 426 and 426 "e igebored, which open into the deep Einbonrungen 411 and 411 'at those points where the tapered zones 422 and 422' are. In the bores 426 and 426 'are pipe segments 428 and 428' from one insulating .Merkstoff used so that they cover the peripheral zone.

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Retaining members 430 and 430 ¹ made of metallic materials are inserted into the bores in such a way that they come into direct contact with the tapered zones 422 and 422 '. In addition, a number of elastic bodies 432, 432 'are inserted and covered with insulating strips 434, 4 ^ 4'. These insulating strips 434, 434 'are provided with terminals 436, 436' which are electrically connected to the elastic bodies 432, 432 '. The terminals 436, 436 'are connected via lines 458, 458' to the automatic shutdown circuit for shutting down the machine; they are connected to a low voltage source, the voltage of which is in the order of magnitude of about 20 volts.

In the following the operation of the machine according to the invention when cutting a press or punch ram or the like. and a die made from a workpiece (shaped steel) adapted to it. This is a typical one Application example of the machine 10 according to the invention.

In this case, the running saw 20 is inclined by 10 ° relative to the workpiece M, so that a tra " pez-shaped block is cut, the bottom of which is larger than its top. Then parts A, B (Fig. 22) removed, whereupon the blocks D and P are subjected to a heat treatment and then further processed into the dies and rams (Patrizerj).

First, the nut 68 is loosened and the handwheel 62 is

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rotates and the machine frame by the desired angle to tilt with respect to the machine bed 12 (Fig. 1 feis $). The spindle nut 48 is thereby removed from the setting spindle 58 adjusted in the direction of arrow e (Fig. 3), so that the machine frame i4pum its ball joints 44, 44 'as a pivot point arrives in the inclined position indicated by dash-dotted lines. Has the machine frame been brought into the desired angular position it is done by tightening the nut sitting on the threaded rod 64 against the machine bed 12 set.

After the saw 20 over the driven wheel 16 and the drive wheel 18 has been placed, the workpiece M is attached to the turntable 76 of the work table 28, whereupon a Template T (Fig. 13 and 15) in the desired position the workpiece M is glued or otherwise fixed. The saw housing container 198 is then removed from its Position Y or Z brought into position X (Fig. 12). The desired saw band 20 is now removed from the housing 196 and wrapped around the driven wheel 16 and the drive wheel 18, whereby it is passed through an output bore in the workpiece M has been drilled in, is guided through it. The saw band 20 is then the required length from the Housing pulled out and separated by means of cutting device 188. The two ends of the saw band are welded together, so that an endless saw band is created. Preferably there is a device for dimensioning the desired Saw band length in the vicinity of the cutting device 18d.

- 2ε -

arrange t.

As soon as the saw band 20 over the two wheels 16 and 'S around- - is in place, the handwheel 158 of the saw clamping device 22 be pressed by hand (Fig. 8). This is where the slide 130 raised. Because the spring force of the spring 152 dimensioned so large is that the spring is under the weights of the driven wheel 16, the slide 1 $ 0, the ninstell.spindel 13s and the handwheel I50 cannot be pressed together, remains the spring abutment 14-8 initially in its position when the spindle is rotated, so that the lever 166 does not either is adjusted. However, if the spindle 138 is moved further by means of the handwheel 158 and the slide I30 is raised further, the tension that is established in the saw band causes the spring 152 to be compressed. It shifts the adjusting spindle 138 is in the guide opening 14-4- of the central guide 14-2 together with the spring abutment 14-8 down. This swivels into the groove 170 of the The spring abutment 14-8 encircling bolts 168 the Hebol 166 around his lever joint 164, at the same time the weight 176 is raised will. Since the spring I52 depends on the ι compresses the applied saw band tension and the spring

compression leads to a lever adjustment bring the saw band 20 under any desired tension, wherein at the same time the degree of tension can be read off the scale of the weight 176. Diss is done in such a way that the each with the lower edge of the guide sleeve 174- aligned The scale mark of the measured weight is read.

Eeir biases η of oäjebandes 20 ^ leiuet the F-rderwiderlager 145 is to uiioen so that the engravings et! 182 moves from fine-Konöaicclage with the electrode 18-4-, is the cause schalcer depressed for Sägeantriebsmotor, the Saw band 20 is set in rotation via the drive wheel 18, so that the sawing work can be carried out with the band saw. If the saw blade 20 for some green the tear so the adjusting 1 $ 8 is abruptly raised to its original position under the restoring force of the compressed spring 152nd The upper end face of the handwheel 158 strikes against the ring 156, the impact force being absorbed by the rubber pad 154. At the same time, the copper element 182 of the spring abutment 148 comes into contact with the electrode 184, so that the associated microswitch is actuated and the electrical circuit of the saw drive motor is opened while the motor is stopped.

As long as the saw band 20 is tensioned, the spring abutment 14ft remains in a position in which the weight of the upper saw mechanism is absorbed by the spring force of the spring 152, even when the handwheel 158 is rotated and the slide 1 $ 0 is raised. The voltage display device 24 accordingly displays the zero position. Only when there is tension of the saw band 20, the spring 152 is compressed by a certain amount, so that the SpannuLgsanzeigevorrichtimg now the shows the respective saw band tension. The saw band can be brought to the optimum tension value in each case on this basis.

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71Θ578017.2.72

If the saw band tension is set, then the height of the guide column 220 of the upper saw agitation mechanism is adjusted; Furthermore, the guide block according to FIG. 15 to the left or to the right with respect to its Lagöxötück 22 ;; adjusted and. in the correct. Position. The saw band 2ü is guided by the holders 230 and the pressure roller 228 de ^ guide block 22o _o and held in its prescribed running position. The adjusting screw 282 is then loosened and the holder 248 is rotated with respect to the guide column approximately to a position in which the sensor needle 314 arranged on the actuating lever 506 is located in the immediate vicinity of the front of the saw band 20. Then the adjusting screw 274 is turned by hand and thereby the support arm 256 is pushed outwards relative to the holder 248, whereby a fine adjustment of the feeler needle 314 relative to the saw band 20 is effected either to the left or to the right (FIG. 15). The adjusting screw 286 is also turned by hand so that its front end rests against the intermediate ring of the bearing part 223 »with the holder 248 pivoting slightly around the guide column 220 and thus a fine adjustment of the probe needle 314 relative to the saw band 20 according to FIG left or right causes.

Once the various parts have been adjusted, the clamping screw 282 is tightened again.

Then slide 352 of the lower saw guide

- 31 -

71Θ578017.2.72

device 34 with respect to the support 348 vertically adjusted and fixed in the correct position (Figs. 1C to 19). Then, the movable guide block 378 and the saw guide block 382 in their setting positions opposite the

The clamping force applied to the saw band 20 is now adjusted by means of the dex adjusting screw 394, whereupon by means of the adjusting screw 394 the fine adjustment of these diamond pads is effected.

Since the additional guide blocks 4-02 and 402 'as well as the rear block 408 as a unit on top of the Guide blocks 384- are arranged, these blocks at the same time as setting the saw guide bio 582 adjust.

It is assumed that the saw 20 is intended to cut along the peripheral surface t of the template T in the counterclockwise direction or in the direction indicated in FIG. 23 by the arrow g. The selector lever 338 (Fig. 13 to 15) is pivoted to the right in this case, so that the actuating lever 4-5 pivots under the force of the spring 34-2 around the joint acb.se 308 and the sensor needle 314- against the border edge t the template T. At this point in time the saw band 20 is inside the exit hole f at a distance from the boundary edge of the template T. The upper part of the actuating lever 306 is tilted to the right as shown in FIG -

- 32 -

71Θ578017.2.72

Ren and lower electrodes 296 and 300 are held. The machine is then put into operation manually by depressing the selector switch SW ₁ - and the switch SW, as shown in FIG. Here, the relay R i is excited and held in the excited state by self-holding, so that the torque motor PL on the work table 28 is switched on to bring the table back continuously. When the switch SW ~ is depressed, the relay Rp is energized and is held by latching in the excited state, so that the Sägeantriebsmotor M ~ turned on and thus the saw band is continuous over its circulation path angetri "= ·. ¹ Upon depression of the switch SW ^ the ju "'s DC motor for driving the table of power. -5 _ö t. So that the turntable of the work table 28 is rotated to the left or to the right. In this way, the saw 20 is forced to move in a precisely defined direction, indicated by h in Pig. 23. When the direction of movement of the saw 20 is set in this way, the switch SW ^ is released by the hand pressure. The turntable 76 now moves back without turning so that the saw 20 produces an essentially straight cut in the above-mentioned direction of movement. 13 is pushed to the right so that the contacts 330 and 332 are lifted from the upper electrode 296 and the lower electrode 300, while the contact 530 'against

- 33 -

the top left electrode 298 hits. A relay R ₁ - is excited by this contact closure, which leads to an excitation of a relay R 1. This activates the circuit for the automatic tracking control of the work table? 8. When the contact 35O ¹ rests against the upper electrode 298, the turntable 76 is rotated to the left and the sensor $ 14 is moved in a direction in which it runs away from the boundary edge t of the shell T. If the sensor detaches too far from the boundary edge, the contact 550 comes against the electrode 296 located on the top right, whereby the turntable 76 executes a rotary movement to the right. In this way, the turntable rotates to the right or to the left according to the contour of the template T, the automatic work sequence being carried out.

If an acute-angled or narrow curve, such as one of 500 °, occurs, the rotary movement of the turntable is temporarily delayed compared to the sawing movement. In this case, not only does the contact 550 touch the upper electrode 296, but also the contact 552 comes against the lower electrode 300, since the actuating lever 506 assumes a strongly inclined position the relay R ^ is made to drop out, the automatic tracking circuit is opened and the automatic system of the machine is switched off in order to avoid a faulty cut.

- 54 -

71Θ5780Π.2.72

When the saw 20 has finished the automatic cutting process on the workpiece M, the block that has been removed from the workpiece, which forms the Sröiiel or the male mold P, falls off and hits a 'pin 420 or 420', which over the Ob ^ rseiue of the additional guide ^{blocks 402 1} JZW. 402 'protrudes. As a result, the corresponding pin 420 or 420 'is pressed down against the force of its spring 415 or 416'. This has the consequence that the actuating member 430 or 430 'detaches itself from the tapered zone 422 or 422' and comes into contact with the metal tube 424 or 424 'which surrounds the pin 420 or 420'. As a result, the electrical connection from the line 438 or 438 'to the additional guide block 402 or 402' via the terminal 436 or 436 ', as well as via the conductive elastic body 432 or 432', the actuator 430 or 430 ' and the metal tube 424 or 424 'made so that the shutdown circuit is put into operation and the machine is shut down immediately.

Claims (1)

Protective aromas 1. Automatic Konturen- und FormgebungsmascLa.ne, in particular metal cutting machine with post-forming control, characterized in that it has a machine bed (12) with a work table (28) and a machine frame (14) or the like mounted on the machine bed schwenkoar and fixable in its position . with multi-axis wheels (16, 18) for a band saw (20). 2. Machine according to claim 1, characterized in that a spindle (58) for pivoting the machine frame (14) is provided, which is rotatably mounted in the machine bed (12) and in threaded engagement with a spindle nut (48) of the machine frame. 5. Machine according to claim 1 or 2, characterized in that that the work table (28) has two slides (72, 72, 74) with a turntable (76) lying on it and rotatable in both directions of rotation. 4. Machine according to claim 3 _t characterized in that on the work table (28) a "mimic carrier is attached (70) to which one of the two movable and each supported carriage perpendicular to each other is movably mounted (72, 74), and that to rotate the turntable (76) in both directions of rotation and to stop the turntable - 36 - 718578017.2.72 an electric motor (120) is provided. 5. Machine according to claim 3 or 4, characterized in that for the forward and backward rotation of the turntable (70) a pair of actuators (296, 29 &) is provided opposite one another at a distance, and that between the actuators one with the Fühlernadei '' ο ^Λ Λ ~) or the like. of the automatic box guiding mechanism (32.) cooperating device (528) is provided, which by contact with the actuators under the action of the automatic box guiding mechanism, the threat of the turntable (76) in the forward and backward direction brings about. 6. Machine according to claim 5, characterized in that a Another pair of actuators (300, 302) are provided for stopping the electric motors that drive the saw (20) and the turntable (76), two of which are connected to the sensor (314). of the automatic tracking mechanism (32) operatively connected links are arranged between the two pairs of the actuating elements (296, 298 and 300, 302), respectively which one link with the one pair of actuators controlling the rotation of the turntable (76) and the another member with which the stopping of the electric motors of the saw and the turntable bringing about the pair of actuators cooperates. 7 · machin? according to one of claims 1 to 6, characterized - 37 - 71β57 Π ₁₇ . ₂ .72 - 57 - \ shows that a device (22) for adjusting the saw band tension is arranged on the machine frame (14) is. 8. Machine according to claim 71, characterized in that on des MööejiiüwiigtJölöii (Ih) a riaiter (122) is attached, on which a carriage (130), which carries one of the rotatable wheels (16, 18), is non-rotatable with respect to its axis, but can be displaced in the vertical direction on a vertical guide (128), with one for vertical movement Adjusting spindle (138) engages in a spindle thread in the lower area of the carriage (130), and that between the holder (122) and a spring abutment (148) mounted on the spindle, a spring (15-2) is clamped, which absorbs the saw tension and shows it through its deformation. 9. Machine according to claim 8, characterized in that the spring abutment (148) has a voltage display device (24) is assigned, which is one of the spring abutment mitgenoffiEf.nss Having actuator (166, 168). 1o. Machine according to one of Claims 1 to 9, characterized by> d <* cL, that a saw container housing (198) is attached to a ter (204) is arranged horizontally pivotable, which in turn can be pivoted horizontally on the machine frame (14) is stored, wherein the saw container housing receives one or more saw housings (196), from which the respective - 38 - ■ · 38 - desired saw (20) to the cutting part a ·., r on the machine frame (14) located saw cutting device (188) can be pulled out. 11. Machine according to one of claims 1 to 10, characterized in that dais a saw guide mechanism (30) is arranged in the upper region of the machine frame (14), which to adjust its position relative to the running direction of the saw (20) in the vertical direction and forwards and is movable back and to the right and to the left, and that this saw guide mechanism is one of the two Has sides against the saw (20) with clamping device (228, 23O), which opposite the running " direction of the saw (20) is slightly movable back and forth. ϊ 12.Maschine according to any one of claims 1 to 11, characterized in that 'nengestells (14) arranged holder (348) is arranged a slide or slider (352) vertically movable on a lower portion of the machine in which a movable block ( 378), which is movable with respect to the running direction of the saw in the vertical direction as well as forwards and backwards and to the left and right and carries the saw clamping and guiding device. 13 machine according to claim 12, characterized in that for the actuation of the drive motors of the saw (20) and the - 39 - 718578017.2.72 Turntable (7ό) at least one push-button operated electrical switch on the saw guide device is ordered. 71OS7IOi! .I.n