JPS582003B2 - Sensaku kousaku kikai no work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a means for supplying a material work to the headstock spindle of an automatically controlled turning machine tool, and also for removing a processed workpiece that has been processed from the headstock spindle and carrying it out of the machine.
The present invention relates to a simple and efficient workpiece loading/unloading device for a turning machine tool that uses a tool rest that moves independently as a loading or unloading device.

In recent years, with the advent of tools capable of high-speed cutting such as ceramic tools, turning machine tools are also required to have functions and forms suitable for high-speed cutting.

For example, in the case of high-speed cutting, chips and cutting fluids are scattered around the surrounding area more than ever before, so it is necessary to minimize the necessary amount without interfering with the tool post, both to prevent danger to workers and to dispose of chips. There is a growing demand for a splash cover with a chip area to constantly surround the workpiece and prevent chips from scattering.

In addition, as high-speed cutting has shortened the time required to cut the workpiece, the workpiece can be attached to and removed from the spindle automatically without relying on human hands, reducing the net machining time of the workpiece and making the machine fully automated. Attempts are being made to

However, as described above, it is very difficult to install a workpiece loading and unloading device in a narrow space covered with a splash cover and to carry out workpiece loading and unloading operations.

Therefore, if you try to automatically load and unload workpieces from the outside without sacrificing the function of the splash cover to trap chips in a narrow space, it will inevitably be necessary to open and close the splash cover automatically every time a workpiece is attached or removed. As a result, the time required to attach and detach the workpiece becomes longer, and the meaning of shortening the cutting time by performing high-speed cutting is lost.

The present invention is located in a narrow space covered with a splash cover, moves parallel and at right angles to the spindle axis, and installs an unloading device in a tool rest suitable for unloading used in final finishing, and also moves parallel to the spindle axis. By attaching a loading device to a turret suitable for loading and using the control function of the turret itself to load and unload workpieces onto the spindle, it is possible to quickly load and unload workpieces in narrow spaces covered with splash covers. It is an object of the present invention to provide an inexpensive workpiece loading/unloading device that does not require a special control device for the workpiece loading/unloading device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A workpiece loading/unloading device for a turning machine tool according to an embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a front view of an automatically controlled turning machine tool that performs complex cutting and is equipped with a workpiece loading/unloading device of the present invention.

Regarding the structure of the illustrated turning machine tool, please refer to the following patent application
Since it is disclosed in No. 26836 "Turret rest for turning machine tool", detailed explanation will be omitted.

The reason for this is that there is a slight difference in the inclination angle of the sliding guide surface between the one in Japanese Patent Application No. 48-26836 and the one shown in the figure. is sufficient.

In FIG. 1, a bed 1 of an automatically controlled turning machine tool is provided with a first guide surface 2 along the spindle axis of a headstock 3, and the bed 1 is further provided with a first guide surface 2 parallel to the first guide surface 2; A second guide surface 2 is located at a position opposite to the first guide surface 2 with respect to the spindle axis.
4 guide surfaces are provided.

A first sliding table 5 (hereinafter referred to as a carriage edge in the embodiments of the present invention) is provided on the first guide surface 2 so as to be slidable parallel to the spindle axis. A second slide table (hereinafter referred to as a cross slide in the embodiments of the present invention) that slides in a direction perpendicular to the first guide surface 2 and perpendicular to the spindle axis is slidably mounted.

However, the cross slide is not shown in the drawing because it is covered with a flexible cover 6 for protecting the sliding surface from chips and the like.

The carriage edge 5 is driven by a drive motor mounted on the bed 1, and the cross slide is driven by a drive motor mounted on the carriage 5.

A first tool rest 7 (hereinafter referred to as a drum-shaped turret tool rest in the embodiments of the present invention) is mounted on the cross slide, and the drum-shaped turret tool rest 7 is gripped by a spindle chuck 8. Used for cutting the outer and inner diameters of workpieces.

As detailed in Japanese Patent Application No. 48-26836, the drum-shaped turret tool rest 7 shares the outer diameter cutting tool and the inner diameter cutting tool, and performs machining by indexing each tool to the cutting position as necessary. .

That is, as shown in FIG. 9, an outer diameter cutting tool 11 (for example, External cutting tool, face cutting tool,
Five groove-cutting bits, etc.) are installed radially.

In addition, the drum-shaped turret 10 includes the drum-shaped turret 1
Five through holes are cut at equal intervals on a pitch circle centered on the rotation axis of 0, and an inner diameter cutting tool 12 (for example, a boring bar) is slidably inserted into the through holes, When internal diameter cutting is required, the necessary internal diameter cutting tool 12, which is rotated and indexed to the cutting position, protrudes from the front end surface of the drum-shaped turret 10, and in the case of external diameter cutting, the required internal diameter cutting tool 12 is rotated and indexed to the cutting position. It is positioned at a position slightly recessed from the front end surface.

Further, a movable base 13 (hereinafter referred to as a saddle in the embodiments of the present invention) is provided on the second guide surface 4 so as to be slidable along the main shaft axis. A second tool rest 15 (hereinafter referred to as a turret tool rest in the embodiment of the present invention) that radially holds four inner cutting tools 14 (drills, blade cutters, etc.) is rotatable and indexable. The bearing is mounted on the shaft.

The inner diameter cutting tool 14 is attached to the first to fourth surfaces of the turret tool rest 15, and a loading device 16 (hereinafter referred to as a loading chuck in the embodiment of the present invention) is installed on the remaining fifth surface. installed.

The saddle 13 is driven by a drive motor located near the second guide surface 4 and attached to the bed 1.

The loading chuck 16 receives the material work WA from the separately installed material work supply device 17 provided on the right side of the machine body by the movement function of the saddle 13 in the direction of the spindle axis and the grasping function of the loading chuck 16. Attach to chuck 8.

A separately installed material work supply device 17 is provided with a base plate 1
8, two pillars 19 erected on the base plate 18, a stock chute 20 for the material work WA supported on the pillar 19 in an adjustable inclination angle, and a material work received from the stock chute 20. In order to transfer the WA to the loading chuck 16, the lifter 21 is supported by a column 19 so that its position can be adjusted.

The turret tool rest 15 retreats to the turret machine origin on the right side of the second guide surface 4, and the loading chuck 16 attached to the fifth surface of the turret tool rest 15 receives the material work WA from the lifter 21. position (second
The central axis of the loading chuck 16 and the axis of the lifter 21 are adjusted so that they coincide when the surface is indexed to the cutting position.

As shown in FIGS. 1 and 9, in one embodiment of the present invention, as an unloading device for removing the processed workpiece WB from the spindle chuck 8, in the case of a perforated workpiece, the drum-shaped turret described above is used. One of the inner diameter cutting tools 12 of the tool rest 7 is also used as a boring bar,
After finishing the inner diameter with the boring bar, the machined workpiece WB is caught by the shank of the boring bar and removed from the spindle chuck 8.

The mounting plate 22 fixed to cover the front surface of the headstock 3 includes
A swing arm device 23 receives the machined work WB removed from the spindle chuck 8 by the boring bar of the drum-shaped turret tool rest 7, and a swing arm device 23 receives the machined work WB received by the swing arm device 23. A processed workpiece discharging device 25 is attached, which includes a stock chute 24 for receiving and storing processed workpieces WB by operation.

As disclosed in Japanese Utility Model Application No. 49-20078 "Splash Cover for Machine Tools," the automatic control turning machine tool shown in Fig. 1 is equipped with a total of three covers to prevent chips, cutting fluids, etc. from scattering. installed.

That is, in FIG. 1, it is provided between the headstock 3 and the carrier 5, one end is fixed to the carrier 5, and as the carrier 5 moves, it advances and retreats within the fixed cover 26, and the first guide surface 2 Slide cover 27 to protect
, an upper cover 28 which is provided on the upper part of the headstock 3 and opens and closes up and down with a hinge to prevent chips from scattering;
and a movable door (not shown) interlocking with the carrier 5.

However, in FIG. 1, the movable door described in detail in Japanese Utility Model Application No. 49-20078 is removed to clearly show the processed work discharge device 25.

Therefore, in reality, the machined workpiece discharge device 25 is located inside the movable door, the swing arm device 23 can perform a pivoting movement while the movable door remains closed, and the movable door is interlocked with the carrier 5 during machining. Even if it moves, it will not interfere with the swing arm device 23 or the stock chute 24.

The overall structure of the workpiece loading/unloading device of the present invention has been briefly described above, and next, each structure will be described in detail.

(I) Material work supply device 17 In FIGS. 1 to 4, a plate 29 is attached to the top of two columns 19 erected on the base plate 18 with nuts 30 so that the height can be adjusted. There is.

A hinge 31 is provided on the plate 29 and is rotatably coupled to a hinge 33 attached to the bottom plate 32 of the stock chute 20 by a pin 34.

Two adjustment screws 35 are screwed into the plate 29.
Attach the tip of the adjustment screw 35 to the hinge 3 of the stock chute 20.
3, the stock chute 20 is adjusted to the most suitable inclination angle for the material work WA lined up on the stock chute 20 to slide down due to its own weight.
can be adjusted.

Guide rails 36 are attached to the upper surface of the bottom plate 32 of the stock chute 20 on both sides thereof.

The width between the two guide rails 36 can be easily adjusted depending on the outer diameter of the raw material work WA to be stored.

In order to reduce the sliding friction resistance between the guide rail 36 and the material work WA, thin round rods 37A and 37B are welded to the inner bottom and side surfaces of the guide rail 36, respectively.

At the lower end of the bottom plate 32 of the stock chute 20, material workpieces W necessary for the next cycle are placed as appropriate according to the processing cycle.
A separator 38 (FIG. 2) is attached to separate A one by one and feed it into the lifter 21.

The separator 38 includes a cylinder block 39 attached to the lower surface of the bottom plate 32, and a piston 4 fitted into the cylinder block 39 so as to be slidable in a direction perpendicular to the bottom plate 32.
0, and a separate block 4 attached to the tip of the piston rod 40A of the piston 40 and protruding from the bottom plate 32.
It is composed of 1.

In the raised position of the separate block 41, the bottom plate 3
2, the stepped portion upper surface 32A at the lower end and the upper surface 41A of the separate block 41 are at the same height.

Also, in the raised position, the upper surface 4 of the separate block 41
1A is higher than the top surface of the thin round bar 37A on the bottom surface of the guide rail 36.

Therefore, in the raised position of the separate block 41,
The material work WA in the guide rail 36 comes into contact with the right side surface 41B of the separate block 41, and is prevented from sliding down.

When the separate block 41 is lowered, the upper surface 41A of the separate block 41 is at the same height as the thin round bar 37A on the bottom of the guide rail 36, so the material work WA is placed on the upper surface 41A of the separate block 41, and the step at the lower end of the bottom plate 32 It comes into contact with the attached side surface 32B and stops.

When the separate block 41 rises again, the material work WA on the upper surface 41A of the separate block 41 slides onto the stepped portion upper surface 32A at the lower end of the bottom plate 32, and is fed into the receiving tray 47 of the lifter 21, which will be described later.

At this time, the subsequent material work WA comes into contact with the right side surface 41B of the separate block 41 and waits for the next separating operation.

Next, a lifter 21 transfers the material work WA sent from the stock chute 20 to the loading chuck 16.
To explain the structure in detail, the base plate 4 of the lifter 21 is attached to the support column 19 erected on the base plate 18.
2 is installed in a height-adjustable manner.

A guide hole 43A parallel to the central axis of the loading chuck 16 of the turret tool rest 15 that has retreated to the turret machine origin is bored in the bearing block 43 provided at the left end of the base plate 42. A pilot bar 44 is inserted into the inserted bearing bush 43B.
is slidably inserted.

A hinge 45 is provided at the left end of the pilot bar 44,
A hinge 48 attached to the bottom surface of a receiving tray 47 of a bucket device 46, which receives the material work WA separated by the separator 38, is rotatably coupled to the hinge 45 by a pin 49.

On the other hand, a hinge 50 is provided at the right end of the base plate 42 , and is rotatably coupled to the hinge 50 by a hinge 53 at the right end of the end cover 52 of the cylinder 51 or by a pin 54 .

A piston 55 is slidably inserted into the cylinder 51,
A hinge 56 attached to the left end of the piston rod 55A integral with the piston 55 is rotatably coupled to another hinge 57 on the bottom surface of the saucer 47 by a pin 58.

A position adjustment screw 60 of the V block 59 is screwed into the protrusion 47A of the receiving tray 47, and the position of the V block 59 is adjusted according to the outer diameter of the material work WA, so that the center of the material work WA is always in the low position. It is made to coincide with the central axis of the deing chuck 16.

Further, a hook 61 is attached to the hinge 45, and a hook 61 is attached to the base plate 42.
A hook 62 is attached to the bottom surface of the holder, and a spring 63 is stretched between the two.

The inclination angle of the tray 47 at the receiving position of the material work WA is determined by the backward end position of the piston 55 and the pilot bar 44.
In this position, the upper surface of the tray 47 is adjusted to match the upper surface 32A of the stepped portion at the lower end of the bottom plate 32 of the stock chute 20.

When the piston 55 moves forward, the pilot bar 44 is pulled by the spring 63, so the tray 47 first rotates counterclockwise around the pin 49, changing the posture of the material work WA on the tray 47. The center axis of the chuck 16 and the axis of the material work WA are corrected to match.

The final attitude correction position of the receiving tray 47 is achieved by bringing the stopper pin 64 attached to the hinge 45 into contact with the bottom surface of the receiving tray 47.

When the bottom surface of the saucer 47 comes into contact with the stop bar pin 64,
Bucket device 46 begins moving forward.

The transfer position of the material work WA from the packet device 46 to the loading chuck 16 is confirmed by the dog D-1 at the rear end of the pilot bar 44 stepping on the limit switch LS-1.

Further, the backward end position of the bucket device 46 is confirmed by the dog D-1 stepping on the limit switch LS-2.

(■) Loading chuck 16 As shown in FIG. 1, FIG. 5, and FIG.
A loading chuck 16 is attached for receiving A and mounting it on the spindle chuck 8.

The blade mounting surface of the turret tool post 15 has a cylindrical hole 6 in the center.
A chuck body 66 having a diameter of 5 is fixed, and the cylindrical hole 6
A cylinder 67 is slidably inserted into the cylinder 5 .

The cylinder 67 has a cylindrical hole 67A with an open tip, and is slidably fitted into a piston portion 68A inside a cover 68 attached to the tip of the chuck body 66.

A split groove 66A that reaches the cylindrical hole 65 is formed in the chuck body 66 in the radial direction, and two swing levers 70 that are swingably supported by a pin 69 are inserted into the split groove 66A. .

One end of the swinging lever 70 is inserted into a ring groove 67B on the outer periphery of the movable cylinder 67, and the sliding of the cylinder 67 causes the swinging lever 70 to swing.

The other end of the swinging lever 70 has a T-shaped groove 71A of the gripping claw 71.
A T-shaped protrusion 70A is formed to fit into the holding claw 71, and the gripping claw 71 is slidably adjusted in the radial direction according to the outer diameter of the material work WA.

In order to fix the gripping claw 71 at an appropriate position according to the outer diameter of the material work WA, latches 71B are carved at equal intervals on the bottom of the T-shaped groove 71A, and the tip of the clamp screw 72 is pressed against the latch 71B and fixed. do.

In order to compensate for the inclination of the gripping claws 71 due to the swinging of the swinging lever 70 and to reliably grip the material work WA, the gripping claws 71
A crank piece 74 is swingably supported by a pin 73 at the tip.

A pusher 76 is attached to the front surface of the cover 68 and can be moved forward by a limited distance by a screw 75, and is pressed by a spring 77.

Therefore, the pusher 76 acts to reliably press the material work WA against the axial reference surface of the spindle chuck 8 when the gripping claws 71 are released.

Pressure oil for operating the cylinder 67 is supplied through the pivot shaft of the turret tool post 15.

(■) Unloading device As mentioned above, in one embodiment of the present invention, a drum-shaped turret that moves in parallel and perpendicular directions to the spindle axis is used as an unloading device that plays the role of removing the processed workpiece WB from the spindle chuck 8. Using one of the boring bars of the inner diameter cutting tools 12 of the tool rest 7, as shown in FIGS. 9 and 10 A, after the final finishing of the inner diameter is completed, the jaws of the spindle chuck 8 are released. The machined workpiece WB is hooked on the shank of the boring bar, and is transported to a predetermined delivery position to the swing arm device 23 by the movement function of the drum-shaped turret tool rest 7 in parallel and perpendicular directions to the main axis axis.

In this way, when the machined workpiece WB is a workpiece with holes, the unloading time can be shortened by using the boring bar that performs the final finishing process also as an unloading device.

As mentioned above, in one embodiment of the present invention, a boring bar for final finishing is used as an unloading device, but a solid bar that does not participate in cutting or a dedicated collet type shown in FIG. It is also possible to use an unloading bar 78.

In addition, if the processed workpiece WB is a workpiece without holes, as shown in FIG. It is also possible to remove the machined workpiece WB from the spindle chuck 8 by attaching it to the front surface of the attached drum-shaped turret 80 and using the grasping function of the unloading chuck 79 and the moving function of the drum-shaped turret tool rest.

(IV) Processed Work Discharge Device 25 As shown in FIG. 7, the cylinder block 81 of the swing arm device 23 is fixed to the mounting plate 22 fixed to cover the front surface of the headstock 3 as described above.

A rack 83 is cut into the right piston rod 82A of the piston 82, which is slidably inserted into the cylinder hole 81A of the cylinder block 81, and engages with a pinion 84 rotatably supported by the cylinder block 81.

A pivot shaft 85 that is keyed integrally with the pinion 84
A swing arm 86 is attached to the piston 8.
2, the swing arm 86 pivots.

Swing arm 8 as shown in FIGS. 7, 8 and 9
A receiving box 87 for the processed workpiece WB is attached to the tip of the workpiece 6 .

The receiving box 87 has a back plate 88 attached to the swing arm 86 (in order to avoid interference with the drum-shaped turret tool rest 7 during cutting, when the swing arm 86 is in the upright retracted position, chips and cutting fluids are removed). a guide plate 89 that can be adjusted according to the width of the processed workpiece WB on the back plate 88; L for squeezing the machined workpiece WB when coming out of the machined hole of the workpiece WB
A bottom plate 93 that is swingably attached to the ironing plate 90 via a hinge 91 and adjustable in the radial direction of the processed workpiece WB with a height position adjustment screw 92.
and a posture holding plate 94 attached to the bottom plate 93 to properly hold the posture of the stepped processed workpiece WB.

As shown in FIG. 7, when the drum-shaped turret tool post that hooks the machined workpiece WB on the boring bar 12 moves back to the machine origin on the operator's side at right angles to the spindle axis with the swing arm 86 falling down, the machined workpiece WB is completed. Work WB is the bottom plate 93
When the boring bar 12 is pulled out from the machined hole of the machined workpiece WB, the tip at the tip of the boring bar 12 is prevented from getting caught in the machined hole.

When the boring bar 12 comes out of the machined hole in this state, the machined workpiece WB rolls under its own weight along the slope of the bottom plate 93, and as shown by the two-dot chain line in FIG. kept in an enclosed space.

As shown in FIG. 7, a dog D-2 is attached to the left end of the left piston rod 82B of the piston 82, and when the swing arm 86 falls down, a limit switch LS-3 is depressed to issue a signal to confirm that the swing arm has fallen.

When the piston 82 moves to the left, the swing arm 86
is rotated 90 degrees counterclockwise and brought to the retracted position shown by the two-dot chain line in FIG.

During the swing of the swing arm 86, the processed workpiece WB rides on the guide plate 89, and when the swing arm 86 is brought to the retracted position, the processed workpiece W
Due to B's own weight and the shock when the swing arm 86 stops,
The processed workpiece WB is dropped into the opening of the stock chute 24.

As shown in FIGS. 1 and 7, the stock chute 24 has a chute 95 with a U-shaped cross section, and two hinges 96A and 96B are attached to the lower surface of the stock chute 24. The hinges 97A and 97B are attached to the left side surface so that the height can be adjusted, and the inclination angle can be adjusted by a pin.

A limit switch LS-4 is attached to the mounting plate 22 at the opening of the chute 95 to confirm that the processed workpiece WB has been fed into the chute 95 (confirmation that the processed workpiece has passed).

The limit switch LS-4 is also used to confirm that the chute 95 is full of processed workpieces WB, and if the limit switch LS-4 is kept depressed,
The operation of carrying the material work WA into the spindle chuck 8 is stopped.

The workpiece loading/unloading device for a turning machine tool according to the present invention is constructed as described above and operates as follows.

When a required cutting cycle instructed by the control device (numerical control device) is started, the turret tool rest 15 and the drum-shaped turret tool rest 7 each perform individual cutting or combined cutting with both tool rests.

As a premise for starting cutting, one material work WA is placed on the tray 47 of the material work supply device 17, and the separate block 41 of the stock chute 20 is in the lowered position.

In order to avoid interference with the drum-shaped turret tool rest 7, the swing arm 86 is still in an upright retracted position.

The turret tool rest 15 starts cutting with the tool attached to the first surface, and when cutting with the tool on the second surface is finished,
The saddle 13 retreats to the turret machine origin on the right side of the machine,
The turret tool post 15 remains in standby without indexing, and the operation of carrying in the material work WA from the lifter 21 is started.

During this operation, the drum-shaped turret tool rest 7 continues cutting.

In response to a confirmation signal that the turret tool rest 15 has retreated to the turret mechanical origin, the lifter 21 is raised.

When the lifter 21 rises and the dog D-1 steps on the limit switch LS-1 for confirming lifter rise, the turret tool rest 1
The loading chuck 16 on the fifth surface of 5 operates to grip the material work WA.

At the same time as the limit switch LS-1 is stepped on, a timer is activated, and the lifter 21 is lowered in response to a time-up signal from the timer.

When the lifter 21 descends and the dog D-1 steps on the limit switch LS-2 for confirming lifter descent, the turret tool post 15 performs indexing, and the tool on the third surface is indexed to the cutting position. Cutting is performed up to the surface.

When cutting with the tool attached to the fourth surface of the turret tool rest 15 is completed and the fifth surface is indexed to the cutting position,
The turret tool rest 15 stands by with the fifth surface indexed.

This standby position is set at a position where the turret tool rest 15 and the drum-shaped turret tool rest 1 do not interfere with each other during an unloading operation by the drum-shaped turret tool rest 7, which will be described later.

After the inner diameter cutting tool 12 (boring bar) of the drum-shaped turret tool post 7 completes the final finishing process, the M of the numerical control device is
The function commands the rotation of the spindle to stop and the jaws of the spindle chuck 8 to open.

When the jaws of the spindle chuck 8 open, the machined workpiece WB is caught on the shank portion of the boring bar 12.

The drum-shaped turret tool rest 7 is moved to the right of the machine (swing arm 8
6) to a position where it does not interfere when turning.

When the drum-shaped turret tool rest 1 moves to a position where it does not interfere with the swinging movement of the swing arm 86, the M function of the numerical control device causes the swing arm 86 to swing 90 degrees clockwise from the retracted position.

At the same time, the separate block 41 of the stock chute 20 is raised by the same M function, and the material work WA is placed on the tray 4.
Send it to 7.

When the dog D-2 steps on the limit switch LS-3 for confirming swing arm inclination, the drum-shaped turret tool rest 7 retreats to the operator's machine origin at right angles to the spindle axis in response to a command from the numerical control device.

This machine origin is a predetermined position where the processed workpiece WB is delivered to the receiving box 87.

When the drum-shaped turret tool post 7 retreats to the machine origin on the operator side, the boring bar 1 is moved by the M function of the numerical control device.
2 is drawn into the turret support 9 of the drum-shaped turret tool rest 7.

At the same time, the M function releases the standby of the turret tool post 15.

When the boring bar 12 is drawn into the turret support stand 9, the processed workpiece WB is squeezed by the ladder plate 90 and completely transferred into the receiving box 87.

Delivery to the receiving box 87 is carried out by the drum-shaped turret tool rest 7.
This can also be done by moving the machine parallel to the spindle axis to the right of the machine.

On the other hand, the turret tool post 15 released from standby moves forward to the loading position on the spindle chuck 8 with the loading chuck 16 gripping the material work WA, and waits at the loading position.

In response to a confirmation signal that the turret tool rest 15 has reached the loading position, the timer is activated, the gripping claws 71 of the loading chuck 16 are opened, and the pusher 76 presses the material work WA against the claws of the spindle chuck 8.

On the other hand, the claws of the spindle chuck 8 are closed and grip the pressed material work WA.

In response to a time-up signal from the timer, the turret tool rest 15 moves backward, and the tool on the first surface is indexed to the cutting position.

Similarly, in response to a time-up signal from the timer, the swing arm 86 swings counterclockwise to the retreat position and sends the processed workpiece WB to the processed workpiece stock chute 24.

Also, due to the time-up signal of the same timer, the material work W
The separate block 41 of the stock chute 20 of A is lowered, and the material work WA to be sent to the receiving tray 47 next.
is placed on the upper surface 41A of the separate block 41.

When a processed workpiece WB is dropped through the opening of the chute 95, a limit switch L is activated to confirm the passage of the processed workpiece.
S-4 is depressed and this confirmation signal initiates the next cutting cycle.

As described above, according to the present invention, a material work loading device is attached to one of the two tool holders, a processed workpiece unloading device is attached to the other turret, and each turret itself is The control function is used as a driving source to automatically load and unload the workpiece onto the spindle chuck.
Workpieces can be quickly attached and detached in a narrow space covered with a splash cover.

Furthermore, since the control function of the tool post itself is used as a drive source by the person carrying out the workpiece, a special drive source or control device for the workpiece carry-in/unloading device is not required.

In addition, if an unloading device is attached to a tool rest that moves parallel and perpendicular to the spindle axis to share the final finishing work, and a loading device is attached to the other tool rest that moves parallel to the spindle axis, the final Immediately after finishing machining by the tool rest that handles finishing, the machined work can be removed from the spindle chuck by the unloading device of the tool rest, so the time required to remove the work from the spindle chuck can be shortened.

Furthermore, the operation of the turret with the loading device to pick up the material workpiece from the material work supply device can be performed during the cutting operation of the turret with the unloading device, which reduces the time taken to load and unload the workpiece. In addition, the cutting ability of the tool post will not be reduced due to the operation of receiving the material work.

The flow of loading and unloading operations is as follows.

(a) Final finishing of the turret with unloading device.

(b) Immediately after the machining is completed, the tool rest with the unloading device moves back to the original position in order to remove the machined workpiece from the spindle chuck and carry it out of the machine.

(c) At the same time, the tool post having the loading device moves forward to attach the workpiece to the spindle chuck, and retreats after attachment.

(d) At the same time, since the tool rest with the unloading device has already called out a predetermined tool, machining is started.

Therefore, considering the cutting function of the turret, each turret can be provided with the most suitable loading/unloading function.
It becomes possible to carry out smooth loading/unloading operations with shortened loading/unloading time.

Further, as explained in the embodiment of the present invention, if the inner diameter cutting tool for final finishing is used as the unloading device, there is no need to attach a special unloading device.

Furthermore, it is advantageous in terms of space as an unloading device attached to a tool rest, and has the effect of shortening the time required to remove the workpiece.

Further, in the embodiment of the present invention, the stock chute of the machined workpiece discharging device is installed at the position closest to the operator, so that it is suitable for monitoring the finished state of the machined workpiece that has been machined.

Furthermore, when a tool rest that moves parallel to the spindle axis performs final finishing, an unloading device can be attached to the tool rest, and a loading device can be attached to the tool rest that moves parallel and perpendicular to the spindle axis.

[Brief explanation of the drawing]

Fig. 1 is a front view of an automatically controlled turning machine tool equipped with the workpiece loading/unloading device of the present invention, Fig. 2 is a partially sectional front view of the material work supply device, and Fig. 3 is an arrow A in Fig. 2. 4 is a view taken in the direction of arrow B in Fig. 2, Fig. 5 is an enlarged sectional view of the loading chuck, Fig. 6 is a view taken in the direction of arrow C in Fig. 5, and Fig. 7 is a processed work discharge device. FIG. 8 is a front view with a part of the section cut away, FIG. 8 is a view taken in the direction of arrow D in FIG. Three examples are shown. In the figure, 1... Bed, 3... Headstock, 5... Carriage, 7... Drum type turret turret, 8...・Spindle chuck,
13... Saddle, 15... Turret turret, 16... Loading chuck, 17.
...Material work supply device, 20...Stock chute, 21...Lifter, 23...
... Swing arm device, 24 ... Stock chute, 25 ... Finished work discharge device.

Claims (1)

[Scope of Claims] 1. A slide table that is controlled by a control device and is movable relative to the head spindle in parallel and perpendicular to the spindle axis, and that is placed on the slide table and attached to the spindle. a first tool rest having a tool for cutting the outside diameter or inside diameter of the workpiece, or the outside diameter and the inside diameter; In an automatically controlled turning machine tool having a movable base and a second tool rest mounted on the movable base and having a tool for cutting an inner diameter or an inner diameter and an outer diameter of the workpiece, the first tool rest has a movable base. an unloading device that removes a machined workpiece gripped by the headstock spindle from the spindle by moving a sliding stand that is provided and on which a first tool rest is placed; and a second cutter that is provided on the second tool rest. A workpiece loading/unloading device for a turning machine tool, which includes a loading device that grips and supplies a workpiece to a headstock spindle by moving a movable table on which a table is placed. 2. A sliding table that is controlled by a control device and is movable relative to the headstock spindle in parallel and perpendicular to the spindle axis, and the outer diameter or a first tool post having a tool for cutting the inner diameter or the outer diameter and the inner diameter; a movable base that is controlled by the control device and movable parallel to the spindle axis independently of the sliding base; an automatic control turning machine tool having a second tool rest placed on a table and having a tool for cutting an inner diameter or an inner diameter and an outer diameter of the workpiece;
a loading device that grips and supplies a workpiece to the main spindle of the headstock by moving a sliding stand provided on the tool rest on which the first tool rest is mounted; A workpiece loading/unloading device for a turning machine tool, which includes an unloading device that removes a machined workpiece held by a headstock spindle from the spindle by moving a movable table on which a table is placed.