JPS6214364B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention enables continuous machining of various types of turning of a workpiece (workpiece), turning of both the front and rear parts of the workpiece, and a multi-head machine that enables high-speed precision cutting. The present invention aims to provide an automatic workpiece reversal and transfer device for type CNC lathes.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to the accompanying drawings showing one embodiment.

This embodiment illustrates a two-head CNC lathe with two main axes.

It is disposed between a plurality of parallel spindles 1a and 1b, and takes out the workpiece W from the main spindle 1a in the front row of the transfer path of the workpiece W, inverts the workpiece W, and supplies it to the main spindle 1b in the rear row of the transfer path. Each main shaft 1a,
The front and rear parts of the work w are continuously turned by a turning tool 2, etc. located at the opposite front of the workpiece w, and a curved arm-shaped supply arm is provided near each of the main shafts 1a and 1b. 3a and 3b are pivotally connected at their bent portions and are arranged to be able to swing back and forth with their swing axes in the same direction as the axial direction of the main shafts 1a and 1b, and the supply arms 3a and 3b are A front chuck device 5 is provided at both tips on the side of the supply section 4 in the front row of the transfer path.
a, 5b are provided with rear chucks 7a, 7b on the side of the take-out part 6 in the rear row of the transfer path, and between the main shafts 1a, 1b in the front row and the rear row, in a direction intersecting the axial direction of the main shafts 1a, 1b. A pair of transfer chucks 8 and receiving chucks 9, which can be rotated back and forth by 90 degrees with a rotation axis, are disposed facing each other, and the supply arm 3a is arranged in a position such that the front chuck 5a is in the supply section 4 or When facing the receiving chuck 9 in the front row, the rear chuck 7a faces the main shaft 1a, and when the front chuck 5a faces the main shaft 1a, the rear chuck 7a faces the transfer chuck 8 in the rear row. Or, in a position where the front chuck tool 5a faces the take-out part 6 and does not face the supply part 4 or the receiving chuck 9 in the front row, the rear chuck tool 7a is also in a neutral position where it does not face the transfer chuck tool 8 in the rear row or the take-out part 6. The workpiece W is taken out from the main spindle 1a of the front row by the reciprocating swing motion of the supply arm 3b of the front row, and the work W is taken out by the transfer operation of the transfer chuck tool 8 and the receiving chuck tool 9. The present invention is characterized in that the work W is reversely transferred, and the workpiece W is supplied to the main shaft 1b in the rear row by the reciprocating swinging motion of the supply arm 3b in the rear row.

If the number of spindles increases to 3, 4, etc., the number of supply arms 3a, 3b, transfer chuck 8, and receiving chuck 9 will increase accordingly. The chuck picks up the workpiece from the receiving chuck in the front row, supplies it to the main spindle, and then reversely transfers the processed workpiece to the transfer chuck in the rear row by the rear chuck.

It will be explained in more detail.

In this embodiment, two main shafts 1a,
1b, and slide tables 11a and 11b are disposed in front of each of the main shafts 1a and 1b, and slide tables 11a and 11b that slide in the axial direction and radial direction of the main shafts 1a and 1b according to a setting program, Mounting tables 12a and 12b are placed on the slide tables 11a and 11b, several blade mounts 13 are placed on these mount tables 12a and 12b, and various turning tools 2 are mounted on the blade mounts 13. It is installed.

Further, work chuck tools 14a, 14b are attached to the various main shafts 1a, 1b.

Further, although not shown in detail, the supply section 4 of this embodiment is made up of a supply chute 15 and a separation mechanism 16. w to 1
It is adapted to be supplied to the front chuck device 5a. Further, the take-out part 6 is not directly related to this and is not shown in detail, but it consists of a take-out chute 17 and a receiving mechanism 18, and receives the workpiece w from the rear chuck tool 7b by the receiving mechanism 18, and takes it out. The chute 17 is used to transport the paper to the take-out position. In addition, in this embodiment, the aircraft 1
Bearing bodies 19a, 19 are installed directly above the main shafts 1a, 1b of 0.
b, and by a turning mechanism using a rack and pinion (not shown) on the bearing bodies 19a, 19b,
Rotating shafts 20a and 20b are rotated in the forward and reverse directions for 60 minute distribution and are moved back and forth by a back and forth movement mechanism. Arm 3
A and 3b are moved from a neutral position shown by a solid line as shown in FIG. 1 so as to turn 60 degrees in forward and reverse directions as shown by imaginary lines, and also move back and forth.

Further, the transfer chuck device 8 of this embodiment is shown in FIG.
As shown in FIG. 4, a moving table 24 that is moved left and right by a pinion 22 and a rack 23 that are rotated by a moving motor 21 is disposed at the back of the aircraft body 10, and a longitudinal adjustment table 25 is attached to this moving table 24. A vertical pivot shaft 29 is installed vertically on the front and rear adjustment table 25, and is horizontally pivoted by a pivot cylinder 28 by 90 degrees due to the engagement of a pinion 26 and a rack 27. A chuck mounting plate 30 is fixed to the chuck mounting plate 29, and the transfer chuck device 8 is mounted to this chuck mounting plate 30a.

Further, the receiving chuck device 9 of this embodiment is
A front and rear adjustment table 31 is disposed on the back side of the front and rear adjustment table 31 so as to be movable back and forth by a front and rear cylinder 32.
1 is vertically provided with a vertical pivot shaft 34 which is horizontally rotated 90 degrees by a rotating cylinder 33 due to the engagement between a pinion and a rack (not shown), and a receiving chuck tool 9 is attached to this vertical pivot shaft 34 via a chuck mounting plate 20b. I'm trying to install it. In addition, front/rear chuck tools 5a, 5b, 7a, 7b and transfer chuck tools 8.
The receiving chuck 9 has a similar mechanism except for the chuck part that matches the chuck part of the work w. For example, as shown in FIG. A chuck pawl 36 is provided that moves toward and away from the center in the radial direction, and an operating pin 37 is inserted through the central axis of the chuck body 35 so as to be movable back and forth. forming a portion 38;
A bell crank-shaped locking hook 39 is provided for each chuck claw 36 so as to be swingable by a fulcrum pin 40.
The front part of this locking hook piece 39 is fitted into the engagement groove 41 of the chuck claw 36, and the lower end part is connected to the operating pin 37.
A clamping spring 44 is interposed between the rear flange 43 of the actuating pin 37 and the chuck body 35 to move the chuck pawl 36 inward, and A pressure release cylinder 45 is disposed in the pressure release cylinder 4.
5 is operated according to a set program to advance the cylinder rod 45a, press the flange 43 against the clamping spring 44, and clamp it inward via the locking hook 39. This is an outer diameter type in which the chuck claws 36 are each moved outwardly.

The receiving chuck 9 also has a pressure release cylinder 46, and the chuck claw 47 is moved to be clamped and released by the operation of the pressure release cylinder 46, and the front chuck 5a, 5b
And in the case of the rear chuck tools 7a, 7b, as an alternative to such pressure release cylinders 45, 46, as shown in FIG.
A reciprocating rod (not shown) is installed in the central shaft hole 48 of the supply arm 3a, 3b, and a pressing lever 50 is swingably disposed on both arms of the supply arms 3a, 3b by means of a pin 49, and the retracting rod is moved by a cylinder or the like. The base of the pressing lever 50 is pressed by moving it forward and backward, and the tip of the lever 50 presses a member corresponding to the flange 43 of the transfer chuck 8, thereby clamping and releasing the chuck claw, etc. Since this embodiment has the above-mentioned configuration, when the device starts operating, each part automatically operates according to the setting program.

The workpieces w arranged on the supply chute 15 are separated one by one by the separation mechanism 16 and stand by, and the supply arm 3a rotates 60 degrees clockwise from the neutral position as shown in FIG. is supply section 4
The front chuck 5a is opposed to the separation mechanism 16 of
Clip one piece.

When the front chuck tool 5a clamps the workpiece w at the supply position, the pivot shaft 20a moves forward, and then the supply arm 3a rotates counterclockwise through the neutral position and back by 120 degrees, and the front chuck tool 5a picks up the workpiece w at the main shaft 1a. , the workpiece w is inserted into the workpiece chuck tool 14a of the main shaft 1a by retraction of the pivot shaft 20a,
When the workpiece chuck 14a clamps the workpiece w, the front chuck 5a opens, and the workpiece w is attached to the main shaft 1a.

The front chuck 5a of the supply arm 3a is separated from the workpiece chuck 14a by the forward movement of the pivot shaft 20a, and the supply arm 3a rotates 60 degrees clockwise and stops at a neutral position.

Then, as the main shaft 1a rotates, the slide table 11a slides in the X-axis and Z-axis directions according to the set program, and turning etc. are performed by the turning tool 2.

When the turning process on the main spindle 1a side is completed, the supply arm 3a rotates clockwise by 60 degrees, the rear chuck tool 7a faces the main spindle 1a, and the workpiece w on the work chuck tool 14a is moved back by the turning shaft 20a.
is transferred to the rear chuck tool 7a, at this time the front chuck tool 5a faces the supply section 4, and a new work w is clamped by the front chuck tool 5a.

Then, the supply arm 3a is rotated back 120 degrees counterclockwise, the front chuck 5a is opposed to the main shaft 1a, the rear chuck 7a is opposed to the transfer chuck 8, and a new The workpiece w is supplied to the main spindle 1a, and at the same time, the turning workpiece produced by the main spindle 1a, that is, the one-sided workpiece, is transferred to the transfer chuck 8 by the rear chuck 7a.

Then, the supply arm 3a rotates clockwise by 60 degrees and stops at the neutral position, and the new workpiece w is machined on one side.

On the other hand, the work piece w held in the transfer chuck device 8
The turning cylinder 28 causes the pinion 26 and the rack 27 to engage with each other to horizontally turn 90 degrees from the front toward the main shaft 1b, and the movement motor 21 causes the pinion 22 and the rack 23 to engage with each other. Due to the combination, the receiving chuck 9 moves in the direction of the main shaft 1b, and at this time, the receiving chuck 9 is horizontally rotated by 90 degrees by the rotating cylinder 33 to face the direction of movement of the transfer chuck 8, and then the receiving chuck 9 moves toward the main shaft 1b. At the retraction limit, the work w is transferred from the transfer chuck 8 to the receiving chuck 9, and then the receiving chuck 9 is horizontally turned 90 degrees forward by the rotating cylinder 33.

During this transfer, the work w is reversed.

Next, the supply arm 3b rotates 60 degrees clockwise from the neutral position, the front chuck 5b faces the receiving chuck 9, and the front chuck 5b picks up the workpiece w on the receiving chuck 9, The supply arm 3b rotates back 120 degrees, the front chuck tool 5b faces the main shaft 1b, and the front chuck tool 5b supplies the work w to the workpiece chuck tool 14b, and then the supply arm 3b rotates forward 60 degrees to the neutral position. and stop.

Then, the slide table 11b slides in the X-axis and Z-axis directions according to the setting program, and the turning tool 2 performs turning on the other side.

During this two-axis turning process, both the front and rear portions of the work w are subjected to the turning process.

When the turning process etc. is completed, the supply arm 3b is 60
The rear chuck tool 7b rotates back and forth, and the rear chuck tool 7b faces the main shaft 1b, and picks up the workpiece w from the workpiece chuck tool 14b to the rear chuck tool 7b. At this time, the front chuck 5b is reversely transferred and clamped to the receiving chuck tool 9. After that, the front chuck 5b picks up the work w of the receiving chuck 9. Then, the supply arm 3b rotates back 120 degrees,
The work w on the front chuck tool 5b is fed to the main shaft 1b, and at the same time the processed work w on the rear chuck tool 7b is received by the receiving mechanism 18 of the take-out section 6, and taken out and discharged to a predetermined position by the take-out chute 17. be done.

By repeating this operation, turning, etc. of both the front and rear parts of the workpiece w will be sequentially and continuously performed at high speed. As described above, in the present invention, when the device starts operating, each part automatically operates according to the setting program, the supply arm 3a rotates forward, the front chuck tool 5a faces the supply section 4, and the front chuck tool 5a clamps one workpiece w in the supply section 4, and connects it to the front chuck tool 5a.
When the workpiece w in the supply position is clamped, the supply arm 3a rotates counterclockwise through the neutral position and back by 120 degrees, and the front chuck tool 5a faces the main shaft 1a,
The work w is attached to the main spindle 1a, and the supply arm 3
a rotates 60 degrees clockwise and stops at a neutral position, the main spindle 1a rotates, and turning etc. are performed by the turning tool 2, and when the turning etc. on the side of the main spindle 1a is completed, The supply arm 3a rotates clockwise by 60 degrees, the rear chuck tool 7a faces the main shaft 1a, and the workpiece w is transferred to the rear chuck tool 7a. At this time, the front chuck tool 5a faces the supply section 4, Then, attach the new work w to the front chuck tool 5.
a, and the supply arm 3a is rotated back 120 degrees counterclockwise, and the front chuck tool 5a is attached to the main shaft 1.
a, the rear chuck device 7a faces the transfer chuck device 8, and a new workpiece w is supplied to the main spindle 1a by the front chuck device 5a, and is transferred to the transfer chuck device 8 by the rear chuck device 7a. Main shaft 1
The turned workpiece w, that is, the one-sided workpiece, is transferred, and the supply arm 3a rotates clockwise by 60 degrees and stops at the neutral position, and the new workpiece w is machined on one side. The workpiece w clamped onto the chuck tool 8 is inserted into the main shaft 1b from the front.
At this time, the receiving chuck 9 rotates horizontally 90 degrees to face the transfer chuck 8, and the work w is transferred from the transfer chuck 8 to the receiving chuck 9, and then, The receiving chuck tool 9 horizontally turns 90 degrees to face the front, the workpiece w is reversed during this transfer, and then the supply arm 3b turns clockwise from the neutral position by 60 degrees, and the front chuck tool 5b Facing the receiving chuck device 9, the receiving chuck device 9 is opened by the front chuck device 5b.
The workpiece w is taken up, the supply arm 3b is turned back by 120 degrees, the front chuck tool 5b is opposed to the main shaft 1b,
The work w is supplied from the front chuck tool 5b to the main spindle 1b, and the supply arm 3b rotates forward by 60 degrees to the neutral position and stops.The main spindle 1b rotates and the turning tool 2 performs turning on the other side. Both the front and rear parts of the workpiece w are turned by the turning process using the main shaft 1b, and when the turning process is completed, the supply arm 3b rotates forward by 60 degrees, and the rear chuck tool 7b is attached to the main shaft 1b. , the workpiece w is taken from the main shaft 1b to the rear chuck tool 7b, and at this time, the front chuck tool 5b is reversely transferred and faces the next workpiece w clamped to the receiving chuck tool 9,
After that, the front chuck tool 5b picks up the workpiece w from the receiving chuck tool 9, and the supply arm 3b returns 120 degrees.
The workpiece w of the front chuck tool 5b is supplied to the main shaft 1b, and at the same time, the processed workpiece w of the rear chuck tool 7b is received by the takeout section 6, and is taken out and discharged to a predetermined position. , it is possible to sequentially and continuously perform turning work on both the front and rear parts of the workpiece w at high speed.

In particular, since the workpiece is automatically reversely transferred by the supply arm 3b, the transfer chuck device 8, and the receiving chuck device 9, the turning accuracy is significantly improved, and
There is no need to attach or detach the machine, and the unique features of a CNC lathe make it possible to perform turning operations automatically and efficiently.

As described above, according to the present invention, it is possible to continuously perform various turning operations on a workpiece (workpiece) and turning operations on both the front and rear parts of the workpiece, and also to enable high-speed precision cutting. We will provide an automatic workpiece reversal transfer device for multi-head CNC lathes that has revolutionary effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall front view, FIG. 2 is an overall plan view, FIG. 3 is a front view of the main part, and FIG. 4 is a vertical sectional view of the main part. It is. w... Workpiece, 1a, 1b... Main spindle, 2... Turning tool etc., 3a, 3b... Supply arm, 4...
Supply section, 5a, 5b...Front chuck tool, 6...
Removal part, 7a, 7b... Rear chuck tool, 8...
Transfer chuck tool, 9... Receiving chuck tool.

Claims (1)

[Claims] 1 Arranged between a plurality of parallel spindles, the workpiece is taken out from the spindle in the front row of the workpiece transfer path, the work is reversed and supplied to the spindle in the back row of the transfer path, and The front and rear parts of the workpiece are continuously turned, etc. using a turning tool, etc., and a curved supply arm is provided near each of the above-mentioned main shafts, and the bent portion is pivotally mounted. It is arranged to be able to swing back and forth with a swing axis in the same direction as the axial direction of the main shaft, and a front chuck tool is provided at both ends of each supply arm on the supply section side of the front row of the transfer path. a pair of rear chucks attached to the take-out section side of the rear row of the transfer path, and capable of rotating back and forth 90 degrees between the front row and rear row main shafts with a rotation axis in a direction intersecting the axial direction of the main shafts; A transfer chuck device and a receiving chuck device are arranged to face each other, and the supply arm is arranged such that when the front chuck device faces the supply section or the receiving chuck device in the front row, the rear chuck device faces the main shaft. However, when the front chuck is opposed to the main shaft, the rear chuck is opposed to the transfer chuck in the rear row or the take-out part, and in a position where the front chuck is not opposed to the supply part or the receiving chuck in the front row. The rear chuck tool is also placed in a standby position at a neutral position, not facing the transfer chuck tool in the rear row or the take-out section, and the workpiece is taken out from the main shaft in the front row by the reciprocating swing motion of the supply arm in the front row, and the workpiece is taken out from the main shaft in the front row, and the workpiece is taken out from the main shaft in the front row. A multi-head type, characterized in that the workpiece is reversely transferred by a transfer operation with a receiving chuck, and the workpiece is supplied to the main shaft in the rear row by the reciprocating swinging motion of the supply arm in the rear row.
Automatic workpiece reversal transfer device for CNC lathes.