JP2858362B2 - A processing machine with an automatic clamping device without piping - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a clamp jig body for clamping a work only by a spring force in a pallet jig which is automatically carried in and out, and fixes an unclamping of the work. TECHNICAL FIELD The present invention relates to a processing machine having an automatic clamping device without a pipe or the like configured to be performed by a pressing device provided on the side.

[Prior art] As a processing machine, a pallet jig automatically loaded / unloaded from a loading / unloading device is mounted on a rotary table, and a work clamped in a clamp jig body provided in the pallet jig is cut. What is formed by processing is adopted. Although the processing machine composed of the above-mentioned components is not particularly novel, most of the clamping jig bodies used for the same are configured to automatically clamp and unclamp a work by itself. It is. As another conventional technique, a type in which a nut runner device is provided on the side of the loading / unloading device and the workpiece is clamped and unclamped by the nut runner device is also employed.

[Problems to be Solved by the Invention] As described above, the pallet jig provided with the clamp jig body is automatically exchanged between the carry-in / out device side and the rotary table, and the pallet jig is provided. The tool is indexed and rotated on the rotary table, and almost all of the surfaces of the work are machined. Therefore, it is necessary that the pallet jig and the clamp jig body are configured as compact as possible and are easy to handle. However, there are many conventional clamp jig bodies in which all of the clamping means and the unclamping means are arranged as described above. As means for clamping and unclamping the work, an oil pressure type actuator is often used, and a pipe and a hose for connecting the actuator to the oil pressure source are required. Also, electric devices and wiring for automatically controlling the actuator are required. The pipes, hoses, and wires need to move following the movement of the pallet jig, and special arrangements need to be made so that they do not interfere with peripheral equipment. Further, since the loading and unloading of the pallet jig is performed at a high frequency, there is a problem that the pipes, hoses, wiring, and the like are damaged during the loading and unloading operation. Further, since the loading and unloading of the pallet jig is not performed smoothly and promptly, there is a problem that the machine operation rate is reduced and the production efficiency is reduced. Further, in order to prevent interference between pipes, hoses, and wiring and peripheral devices, it is necessary to provide an interference prevention space, which leads to an increase in the size of the processing machine. On the other hand, when the nut runner device is used, a large space is required for arranging the wiring of the nut runner device, and there is a problem that much time is required for loading and unloading the pallet jig.

The present invention provides a compact pallet jig and clamp jig body without providing any pipes, hoses, and the like on the clamp jig body side, and smoothly and quickly loads and unloads the pallet jig and the clamp jig body. While improving production efficiency,
It is an object of the present invention to provide a processing machine having an automatic clamping device that does not have a pipe or the like that can save space and prevent an increase in the size of the machine.

Means for Solving the Problems In order to achieve the above object, the present invention provides a rotary table mounted on a bed and mounting a pallet jig and a pallet jig for clamping a work. A clamp jig main body, a carry-in / out device for carrying the pallet jig into and out of the rotary table, and a pressing device fixed to a stand erected on the bed and detachably engaged with the clamp jig main body. A processing machine having an automatic clamp device, wherein the clamp jig body has a clamp arm portion detachably engaged with the work clamping device, and a direction in which the clamp arm portion is constantly pressed to the work side. A spring-type pressing means for urging by a spring force, a locking means for holding the pressing means at a predetermined clamp position,
An automatic pipe without a pipe or the like constituted by the pressing device and an unlocking device formed to engage with the pressing device and move the pressing device in a direction away from the workpiece by the pressing force of the pressing device. It features a processing machine having a clamping device.

[Operation] The work is clamped by a spring-type clamp jig body in principle.

The clamp jig main body is held in a pallet jig, and is automatically loaded onto a rotary table by a loading / unloading device to clamp a workpiece. The workpiece mounted on the rotary table and clamped by the clamp jig body of the pallet jig is removed on the rotary table after a predetermined processing. Unclamping of the work is performed by engaging a pressing device provided on a stand on the fixed side of the processing machine with the unlocking means and the pressing means of the clamp jig body. When the same type of work is sequentially processed, the work is clamped by the spring force of the clamp jig body by setting the work in the empty clamp jig body and releasing the pressing device. The used pallet jig is carried out to a predetermined place by the carrying-in / out device.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

 First, the overall structure of the processing machine will be described with reference to FIG.

The spring-type automatic clamp device, whose detailed structure will be described later, is composed of a clamp jig main body 1 and a pressing device 6 which is detachably engaged with the main body. The clamp jig body 1 is provided on a base table 8 of the pallet jig 2, and a work (FIGS. 2 and 3) 9 is also gripped on the base table 8 by a gripping tool 10 or the like. The pallet jig 2 is carried into a predetermined position on the turntable 3 by the carry-in / carry-out device 4, and is carried out after use. The loading / unloading device 4 is mounted on the bed 7 and operated by a control device (not shown). The rotary table 3 is also placed on the bed 7 and is indexed and rotated by the motor 11 and a rotation mechanism (not shown). A gantry 5 is erected on the bed 7, and cylinders 12, 13 as one of the pressing devices 6 are fixed to the gantry 5,
As described later, the pallet jig 2 is detachably engaged with the clamp jig body 1.

FIG. 2 and FIG.
The clamp arm 14 of the clamp jig main body 1 abuts and engages with a predetermined clamp position of the work 9 to clamp the work 9. After the work 9 is set, a predetermined place is cut by the cutting tool 15.

Next, the clamp jig main body 1 will be described with reference to FIGS. 2 and 4 to 7.

The clamp jig main body 1 includes a clamp arm 14 that abuts and engages the work 9, a pressing unit 16 that presses the clamp arm 14 toward the work 9 by a spring force, and locks the pressing unit 16 at a predetermined clamp position. Pressing means 16 and pressing device 6 for unlocking locking means 17 and clamp arm 14
And an unlock means 18 provided between them.

As shown in FIG. 1 and FIG.
Is arranged at a position where it can abut and engage the work 9,
The other end is connected to one end of a link member 20 via a pin 19. The other end of the link member 20 is connected to one end of a clevis 22 via a pin 21. A slide rod 23 is connected to the other end of the clevis 22, as shown in FIG.
In addition, a link plate is provided at an intermediate portion of the link member 20 through a pin 24.
One end of the link 25 is connected, and the other end of the link plate 25 is connected to a bracket 27 via a pin 26. The bracket 27 is fixed on the base plate 8.

 Next, the pressing means 16 will be described.

As shown in FIGS. 1, 2, 4, and 5, a bush 28 is fixed on the base plate 8, and a sliding rod 23 is slidably supported in the bush 28. An inclined surface 29 is formed on one end of the sliding rod 23, and the clevis 22 is connected to the other end as described above.

As shown in FIG. 1, FIG. 2 and FIG.
One end of an arm plate 30 is fixed to 22, and one end of a rod 31 is connected to the other end of the arm plate 30 by a nut 32. Bushes 33 and 34 for slidably supporting the rod 31 are fixed to the base plate 8.
Is stored. The spring 35 engages with the rod 31 to press the rod 31 leftward in FIG. Also,
The other end of the rod 31 is connected to one end of a shift arm 36 of the unlocking means 18 described later.

 Next, the locking means 17 will be described with reference to FIG.

A guide member 37 is fixed to the base plate 8.
A lock rod 38 is slidably supported in the guide hole in 37. An inclined surface 39 is formed at one end (lower end in the figure) of the lock rod 38, and the inclined surface 39 abuts and engages with the inclined surface 29 of the sliding rod 23. A spring 40 is provided in the guide hole of the guide member 38.
The spring 40 constantly presses the lock rod 38 downward in FIG. 4, and the inclined surface 39 of the lock rod 38 is
It is urged to press against 29. It is to be noted that a wedge effect is generated between the inclined surfaces 29 and 39 by press contact with the inclined surfaces 39, and acts to lock the sliding rod 23 with a large wedge force. An unlocking means is provided at the upper end of the other end of the lock rod 38.
One end of the swinging lever 41 of 18a is connected.

Next, the unlocking means 18 will be described. Unlock means
Reference numeral 18 in this embodiment comprises an unlocking means 18a which engages with the lock rod 38 of the locking means 17 and an unlocking means 18b which engages with the rod 31 of the pressing means 16.

The unlocking means 18a is for releasing the lock of the locking means 17, and includes a bracket 42 fixed to the base plate 8, a support rod 43 supported by the bracket, and a support rod 43 as shown in FIG. Swing lever connecting the ends
42 and a lever connecting the other end to the support rod 43
It is composed of 44 mag.

As shown in FIGS. 6 and 7, the unlocking means 18b includes a support base 45 fixed to the base plate 8, a rotation rod 46 rotatably supported by the support base 45, and a rotation rod. A swing lever 47 connecting the base end to 46, a shift arm 36 also connecting the other end to the rotating rod 46, a guide table 48 placed on the base plate 8, and a slide on the guide table 48. And a rod 49 movably supported. The hole 49 of the rod 49
One end (tip) of the swing lever 47 is engaged with a.

The cylinder 12, which is one of the pressing devices 6, is fixed to the gantry 5 as described above, and is arranged at a close position facing one end of the lever 44 of the unlocking means 18a. Also, cylinder 13
Is disposed at a position close to the rod 49 of the unlocking means 18b, and is fixed to the gantry 5.

Next, the operation of the spring-type automatic clamp device having the above structure will be described in more detail.

The spring force of the spring 35 of the pressing means 17 causes the rod 31
4 is pushed to the left in FIG.
Is moved to the left in FIG. As shown in FIG. 5, the clevis 22 is in the upper part of FIG.
By moving the link member 20 in the clockwise direction about the pin 24, the tip of the clamp arm 14 is pressed against the work 9, whereby the work 9 is clamped. On the other hand, in this state, the lock rod 38 is pressed downward in FIG. 4 by the spring force of the spring 40, and the inclined surface 39 of the lock rod 38 is pressed against the inclined surface 29 of the sliding rod 23. Thereby, the sliding rod 23 is locked, and as a result, the clamp arm 14 is locked in the clamp position. Since a strong wedge force is generated between the inclined surface 29 and the inclined surface 39 as described above, the work 9 is reliably locked and held with a large force. That is, the work 9 is clamped and locked by the spring force and the wedge force. In order to unclamp the work 9, first, the cylinder 12 is operated, and the lock rod 38 is moved through the lever 44 and the swinging lever 41 against the spring force of the spring 40 so as to be in the fourth position.
The contact between the inclined surface 29 and the inclined surface 39 is released by lifting up the figure. At the same time, the cylinder 13 is actuated, the rod 49 is pressed, the rotating lever 47 and the shift arm 36 are rotated, and the rod 31 is moved rightward in FIG. 4 against the spring force of the spring 36. As a result, the clevis 22 moves rightward in FIG. That is, in FIG. 5, the clevis 22 moves downward in FIG.
To rotate the clamp arm 14 from the work 9 in the counterclockwise direction.

As described above, unlocking is performed smoothly.

[Effects of the Invention] According to the present invention, the following remarkable effects are obtained.

1) A spring-type automatic clamp device is composed of a clamp jig body provided on a pallet jig side and a pressing device fixed on a gantry side on a fixed side of a processing machine. No pneumatic actuator is provided. Therefore, no pipes, hoses, wires, etc. are provided on the side of the pallet jig that moves and rotates, so that the loading, unloading and indexing of the pallet jig can be performed extremely smoothly and quickly. Therefore, the machine operation rate and the production efficiency can be improved.

2) Since there is no piping, hose, wiring, etc. on the pallet jig side, there is no danger of interference with peripheral equipment, the space around the pallet jig can be reduced, and space and the size of the machine can be reduced. .

3) There is no need to use a nut runner device or the like, and the work clamp is securely clamped by spring force and wedge force. That is, reliable clamping can be performed with a compact structure, and space can be saved.

4) Since the pressing device is provided on the fixed side of the processing machine, maintainability is improved, and the pipes, hoses, etc. attached to the pressing device are irrelevant to the pallet jig changing operation and do not move. There is no fear and the life can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing the entire structure of a processing machine according to the present invention, FIG. 2 is a partial front view showing a part of a clamp jig body of one embodiment of the present invention, and FIG. FIG. 4 is a cross-sectional view showing a main part of the pressing means and locking means of the embodiment, FIG. 5 is a plan view of FIG.
FIG. 4 is a plan view taken along the line VI in FIG. 4, and FIG. 7 is a plan view taken along the line VII in FIG. 1 ... clamp jig body, 2 ... pallet jig, 3 ...
Rotary table, 4 ... Loading / unloading device, 5 ... Stand, 6 ...
Pressing device, 7 Bed, 8 Base plate, 9 Workpiece, 10 Holding tool, 11 Motor, 12, 13 Cylinder, 14 Clamp arm, 15 Cutting tool, 16 ... Pressing means, 17 ... Locking means, 18 ... Unlocking means, 19,2
1, 24, 26 Pin, 20 Link member, 22 Clevis, 23 Sliding rod, 25 Link plate, 27, 42 Bracket, 28, 33, 34 Bush, 29 , 39 …… Slope, 3
0 …… Arm plate, 31,49 …… Rod, 32 …… Nut, 35,4
0 ... spring, 36 ... shift arm, 37 ... guide member, 38 ... lock rod, 41, 47 ... swing lever, 43 ... support rod, 44 ... lever, 45 ... support base, 46 …… Rotating rod, 48 …… Guide stand.

Claims (1)

(57) [Claims] A rotary table mounted on a bed for mounting a pallet jig, a clamp jig body provided on the pallet jig for clamping a work, and unloading the pallet jig onto the rotary table. A processing machine having an automatic clamping device provided with a loading / unloading device to be loaded and a pressing device fixed to a stand erected on the bed and detachably engaged with the clamp jig body, wherein the clamp jig is provided. The main body includes a clamp arm portion detachably engaged with the work clamping device, a spring-type pressing device for urging the clamp arm portion with a spring force in a direction of constantly pressing the clamp arm portion toward the work, and the pressing device. A locking unit for holding the pressing unit at a predetermined clamp position, the pressing unit and the pressing unit engaging with the pressing unit and separating the pressing unit from the work by the pressing force of the pressing unit. Processing machine with an automatic clamping device not attached to piping or the like, characterized in that it is composed of a unlocking means formed so as to move in that direction.