JPS62271651A - Work conveying device for tarret processing machine - Google Patents

Abstract

PURPOSE:To enable accurate machining of a work by a method wherein a clamp jig, situated to a turret head, is divided in a use position, and driving of a clamp jig press drive means, situated to a moving table, is controlled between a work placing table and a work holding tool by means of a control means. CONSTITUTION:A work 5 is placed on a work placing table 6, and is conveyed to a position between a turret head 3 and a work holding tool 4. The head 3 moves backward a rod 10 in a position allowing the axis to allow coincidence with that of the rod 10 of a clamp jig 8 to grasp the work by means of a collect 11. With this state, the work is conveyed to a position where the axis of a rod 4a of the holding tool 4 is coincided with that of the work, and after it is secured by the holding tool 4, it is released from the clamp jig. Machining is then applied on the work by means of a machining tool 2. Upon completion of machining, the clamp tool is engaged with the work again through similar control as described above, and the work is delivered from the holding tool 4 to the clamp jig. The work is then released onto the work placing table 6, and it is conveyed out thereby.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a workpiece conveyance device for a turret processing machine that performs predetermined processing of a workpiece.

(Prior Art) A turret processing machine is one in which a plurality of processing tools are attached to a turret head, and an appropriate processing tool is selected depending on the type of workpiece to be carried in to perform desired processing such as cutting. A conveyance device that grips and conveys the workpiece between a workpiece mounting table on which the workpiece is placed before or after machining and a workpiece holder that grips the workpiece during machining is generally known.

Further, Japanese Utility Model Application Publication No. 58-181431 discloses a turret processing machine in which a rod is attached to a turret head for ejecting a processed workpiece from a workpiece holder.

(Problem to be Solved) However, with the structure disclosed in the above-mentioned Japanese Utility Model Application Publication No. 58-181431, it is not possible to grip a workpiece and transport it between the workpiece mounting table and the workpiece holder. It is.

(Means for Solving the Problems) The present invention was constructed in view of the above circumstances, and is capable of accurately carrying in or out a workpiece by grasping it by utilizing the operation of a turret processing machine, and furthermore, It is an object of the present invention to provide a workpiece transfer device for a turret processing machine that allows a controlled turret head to easily have a clamping function.

The workpiece conveyance device of the present invention includes a turret head to which a plurality of processing tools are attached, a movable table that rotatably supports the turret head, and a workpiece holder that holds the workpiece to be processed by the processing tools at a predetermined position. For a turret processing machine having a turret processing machine, there is a workpiece transport device for loading or unloading a workpiece between a workpiece mounting table and the workpiece holder, and a clamp jig provided on the turret head and capable of gripping the workpiece. , a pressing drive means provided on the movable table for pressing the clamp jig when the clamp jig is indexed to the use position; and a press drive means for indexing the clamp jig to the use position and a workpiece mounting table. According to the present invention, in order to perform desired processing on the turret processing machine, the workpiece is placed on the turret processing table by the workpiece mounting table. It is transported to a predetermined position near the machine.

Then, the workpiece on the workpiece mounting table is gripped by a clamp jig provided on the turret processing machine, transferred to a predetermined position by the position control means and installed on the workpiece holder, and then released from the clamp jig by the drive means. be done.

Next, the workpiece is attached to the turret head, and predetermined processing is performed using a processing tool selected for the workpiece. After machining, the workpiece is again placed on the workpiece mounting table via the clamp jig from the workpiece holder and carried out from the turret processing machine by the operation of the position control means and the drive stage I.

In this case, for example, the drive means is capable of pressing the clamp jig in the axial direction by actuation of a cylinder, and releases the workpiece when the clamp jig is pressed;
The structure may be such that the workpiece is gripped when the pressing force is released.

Note that the turret head equipped with the clamp jig and the driving means can be precisely moved to any position with respect to the workpiece holder.

(Effects of the Invention) According to the present invention, the workpiece can be transferred between the workpiece holder and the workpiece mounting table via the clamp jig, thereby automatically loading and unloading the turret processing machine. Therefore, it is possible to save labor in processing using a turret processing machine. Further, the position of the clamp jig can be precisely controlled, and since the pressing drive means is provided on the movable table, the clamp jig can be easily driven.

(Description of Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1, a turret processing machine 1 includes a turret head 3 to which a plurality of workpiece processing tools 2 (only one is shown) are attached.

Further, the turret processing machine 1 includes a workpiece holder 4 spaced apart from the turret head 3 by a predetermined distance. A workpiece 5 is fixed to the workpiece holder 4, and a workpiece processing tool 2 attached to the turret rod 3 performs a fixed processing. Further, a workpiece mounting table 6 for carrying a workpiece 5 into the turret processing machine 1 is arranged at an intermediate position between the workpiece holder 4 and the turret head 3. It is attached to the upper end of the piston rod 7a of the cylinder 7, so that it can be moved to any position in the vertical direction.

Further, a clamp jig 8 is attached to the turret head 3 for receiving and transferring the workpiece 5 between the workpiece mounting table 6 and the workpiece holder 4.

As shown in FIG. 2, the clamp jig 8 includes a collet arbor 9 that is attached to the front surface of the turret head 3, a rod lO that extends through the collet arbor 9 and the turret head 3, and a rod lO that is attached to the tip of the collet arbor 9. cholera) 11.

This collet 11 has a retaining hole 5a formed in the workpiece 5.
The workpiece 5 can be gripped or released by engaging with the workpiece 5.

In the structure of this example, the turret head 3 is provided with a through hole 12, a rod 10 extends into the through hole 12, and a plurality of disc springs 14 are arranged around the rod 10. Further, a hub 15 is fixed to the rod 10, and the hub 15 is urged toward the rear end side of the through hole 12 of the turret head 3 by a disc spring 14. In this state, the rod 10 is positioned rearward due to the biasing force of the disc spring 14.

Furthermore, a tapered portion 10a is formed at the front end of the rod 10, and this tapered portion 10a engages with the tip of the collet 11. The collet 11 is provided with a plurality of slits lla around its periphery, and has a tapered portion 10a.
When the elastic force of the disc spring 14 acts between the collet taper 9 and the tip of the collet taper 9, the collet 11 expands in the radial direction. That is, when the rod 10 is in the rear position due to the action of the spring 14, the collet 11 expands in the radial direction, and thereby the workpiece 5 can be gripped.

Further, at the rear end of the rod 10, a drive cylinder 16 for controlling the movement of the rod 10 in the axial direction is provided on a moving table 19, as shown in FIG. The tip of the piston 17 of this drive cylinder 16 is in contact with the rear end of the rod 10, and when the piston 17 moves forward, the rod 10 also moves forward, causing a compressive force from the tapered portion 10a to act on the collet 11. The collet 11 contracts in the radial direction and the workpiece 5 can be released.

The operation of the conveyance device of the turret processing machine of this example will be explained below.

In FIG. 1, in a turret processing machine 1, a workpiece 5 to be processed is carried into the turret of the turret processing machine 1 at a predetermined position between a rad 3 and a work holder 4 by the operation of a cylinder 7 of a workpiece mounting table 6. be done.

Next, the turret head 3 is moved and positioned to a position where the axis of the workpiece 5 and the axis of the rod 10 of the clamp jig 8 coincide. In this case, the drive cylinder 6 also moves between the axis of the piston 17 and the rod 1 according to the movement of the turret head 3.
Move in alignment with the 0 axis.

Next, the drive cylinder 16 is actuated to advance the piston 17 and move the rod 10 forward.

In this state, the turret head 3 moves forward and inserts the collet 11 in the contracted state into the engagement hole 5a of the work 5 until the rear end of the work 5 contacts the shoulder 9a of the right arbor 9.

Next, the drive cylinder 16 is actuated to move the piston 17 back. As a result, the rod 10 also retreats and the tapered portion 10a presses the tip of the collet 11, so the collet 11 expands in the radial direction and grips the workpiece 5.

Next, the axis of the rod 4a of the workpiece holder 4 and the workpiece 5
While gripping the collet 11, the turret head 3 and the drive cylinder 16 move to a position where the collet 11 coincides with the axis of the collet 11. The turret head 3 and the drive cylinder 16 then move further to insert the workpiece 5 into the engagement hole 18 of the workpiece holder 4, and the gripping claws 4 of the workpiece holder 4.
The workpiece 5 is pushed into the workpiece holder 4 to the extent that the handles b grip the workpiece 5, and the workpiece 5 is positioned and fixed to the workpiece holder 4.

Drive cylinder 16 is then actuated to retract piston 17. As a result, the rod 10 is moved back to the rear position by the elastic force of the disk spring 14, and the collet 11 is contracted. As a result, the work 5 is released from the clamp jig 8 and is held by the work holder 4.

Next, the turret head 3 is moved so that the processing tool 2 comes to a predetermined position where the workpiece 5 is processed.

In this state, predetermined processing is performed on the workpiece 5 by the processing tool 2.

When the machining process is completed, the clamp jig 8 engages with the workpiece 5 again by the same operation as above, and the workpiece holder 4
The receiver is transferred from the clamp jig 8 to the clamp jig 8, and then released from the clamp jig 8 onto the workpiece mounting table 6.

The workpiece 5 is then carried out from the turret processing machine 1 via the workpiece mounting table 6.

As described above, in the apparatus of this example, the workpiece 5 is automatically carried into the turret processing machine 1 and taken out from the turret processing machine 1, so that efficiency can be improved and Since all operations can be performed mechanically using a computer or the like, accurate talent processing can be performed.

In addition, in this embodiment, the workpiece 5 is clamped by the clamp jig 8.
is carried into the workpiece holder 4 from the workpiece mounting table 6, and carried out from the workpiece holder 4 to the workpiece mounting table 6, but it is also possible for the clamp jig 8 to only carry in or carry out the workpiece 5. be.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a talent processing machine according to an embodiment of the present invention, FIG. 2 is a detailed view of a clamping jig, and FIG. 3 is an external view of a drive cylinder. 1... Turret processing machine, 2... Processing tool, 3... Turret head, 4. Old work holder, 5... Work, 6 ...Workpiece mounting table, 7...Cylinder, 8...Clamp jig, 9...Collet taper, lO...
...Rod, 11...Collet, 12...
...Through hole, 14, Old disc spring, 15...
Hub, 16... Drive cylinder, 17... Piston, 18... Engagement hole,
19. Old... Mobile platform. figure

Claims (1)

[Claims] For a turret processing machine that has a turret head to which a plurality of processing tools are attached, a movable table that rotatably supports the turret head, and a workpiece holder that holds a workpiece to be processed by the processing tools at a predetermined position, A workpiece conveyance device for loading or unloading a workpiece between a workpiece mounting table and the workpiece holder, comprising: a clamp jig provided on the turret head and capable of gripping the workpiece; and a clamp jig provided on the movable table, a pressing driving means for pressing the clamping jig when the clamping jig is indexed to the use position; and a pressing driving means for indexing the clamping jig to the usage position, and a pressing driving means for moving the clamping jig between the workpiece mounting table and the workpiece holder. A workpiece conveyance device for a turret processing machine, characterized by comprising a control means for controlling drive.