JPS5856703A - Processing machine for shaft end and outer periphery of long work - Google Patents

Abstract

PURPOSE:To reduce the frontal width of a machine by providing one feeding and carrying-out device with the function of feeding a long work to a processing position along with the function of retreating the work after processing to the former position and carrying it out. CONSTITUTION:When a push-pull head 25 moves toward a long work W, its insertion part 25c is inserted deep into the central hole of the work W, and a steel ball 27 closely contacts the surface of the inner periphery of the work W, which is fed to a main shaft stand device B on the right. The work W is strongly grasped by means of a collet chuck and rotated at a high speed with the collet for its shaft end or outer periphery processing. After the processing, the work W is released from the collet and conveyed through retreat of the push-pull head 25. In this retreat, since conveyance is prevented for only the work W due to its contact with a gate plate 11, the work W is released from the push-pull head and then conveyed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machine for processing the shaft end and outer circumference of a long workpiece.

A device that feeds a long workpiece to a workpiece processing position, a headstock device that grips the long workpiece at the workpiece processing position K and rotates the workpiece at high speed, and a cutter that processes the shaft end or outer periphery of the long workpiece. A processing machine having a table device and a device for carrying out a processed long workpiece has the disadvantage that the entire machine becomes large in size, and in particular, the front machine width becomes large.

In view of the above reasons, an object of the present invention is to provide a machine with a function of feeding a long workpiece to a workpiece processing position, and a function of retracting the long workpiece processed at the workpiece processing position to the original position and carrying it out. This can be achieved with one feeding/unloading device installed on one side, and it also simplifies the structure of the headstock device, which tends to have a complicated structure, and maximizes the front machine width of the processing machine. It is an object of the present invention to provide a machine for processing the shaft end and outer circumference of a long object, which can be made small.

In order to achieve the above object, the present invention is characterized by a workpiece stand, a push-pull mechanism for reciprocally transporting a long workpiece on the stand from a workpiece receiving position to a workpiece machining position, and a workpiece stand. The feeding/unloading device mainly consists of a mechanism for unloading a long workpiece on a pedestal, while a hollow main shaft supported by the headstock and claws fitted into the center hole of the shaft are provided at both ends. A headstock device is mainly composed of a collet having a collet, a cover plate that tapers into the outer surface of one of the claws of the collet, and a piston that fits into the outer surface of the other claw of the collet with a taper. That's right.

An embodiment of the present invention will be described below with reference to the drawings.

The processing machine in this example is mainly composed of a feeding/unloading device, a headstock device B, a first turret device C, a second turret device D, and a tailstock holder E.・The unloading device A is
A long workpiece W placed on one side of the machine is fed from the workpiece receiving position to the workpiece processing flt, and then the long workpiece W processed at the workpiece processing position is returned to the original workpiece receiving position t. It is to be carried out after being moved backwards. This feeding/unloading device A will be described in detail according to FIGS. 4 to 7. On one side of the aircraft body, on the lower surface of the horizontally long mounting base 1 fixed at a predetermined position, Losing play) 2.8.
4.5.6 are protruded in parallel, and among these mounting plates, the 12th M2 located at both ends of the mounting board 10
On the top surface of the tip of the mounting plate 2゜8! 1. Second support plates 7°8 are respectively erected. And the first
．． A pair of workpiece holders 9.degree. 10 for receiving both longitudinal ends of the long workpiece W are fastened to the upper end of the second support plate 7.8 by bolts. These workpiece pedestals 9,
As shown in FIGS. 6 and 7, on the upper surface of the 10, there are V-shaped receiving grooves 9a and tea corresponding to the long workpiece W, and a V-shaped receiving groove 9a, tea that is continuous to the upper side of one side of the receiving groove and shown in FIG. The inclined surface 9b slopes downward toward the right.

10b is formed. Furthermore, one (left side in FIG. 5) workpiece pedestal 9 has a U-shaped shape that abuts the rear end surface of the long workpiece W and into which a push-pull head 25 of push puller 341 [12] described below can be inserted. The insertion hole 11a of
A gate plate 11 is integrally formed.

In the push-pull mechanism 12 that reciprocates the long workpiece W from the workpiece receiving position on the workpiece pedestals 9 and 10 to the workpiece processing position and from the workpiece processing position to the original workpiece receiving position 1, 1 fixed to the aircraft facing each other
Between the pair of shaft support plates 18° 14 are workpiece holders 9 and 1.
Two guide shirts (upper and lower) 16.16 parallel to the long workpiece W on the top of the workpiece 0 are hung horizontally. both guide shafts) 15
．． A moving block 17 is slidably inserted into the shaft 16 so as to straddle the shaft. This moving block 17
As shown in FIG.
are moved forward and backward along guide shafts 15 and 16. A pair of stoppers 21 and 22 for regulating the forward stroke of the movable block 17 are provided on the movable block 17 and the pivot plate 14 facing the block 17, respectively, as shown in FIG. O moving block 17
A head holder 2 is attached to one side of the head via a height adjustment mechanism 2B.
4 is attached to the lower end of the holder 24.
A push-pull head 25 is attached to releasably grip the rear end portion of the long workpiece W on the workpiece pedestals 9 and 10. As shown in FIG. 5, the push-pull head 25 includes a detail 25& that slidably fits into the head holder 24, a stopper flange 26b formed at one end of the shaft portion 251L, and the other end of the shaft portion 25a. A fitting part 25 formed in
C, and is biased rightward in FIG. In the case of a pipe material, it is formed to have a shaft diameter that fits into the center hole of the long workpiece W. Steel balls 27, 27 are installed inside the fitting portion 25C and are pressed into engagement with the inner circumferential surface of the center hole of the long workpiece W, and these steel balls 27, 27 are biased in the projecting direction by a spring 28. Note that when the long workpiece is a solid material, the head holder 24 has a steel plate that releasably grips the outer periphery of the two rear ends of the solid material, as shown in FIGS. 9 and 10. A push nibble head 25 with balls 27, 27 is attached, while a workpiece W is attached to the gate plate 11.
In the carry-out mechanism 80 for carrying out the long workpieces W on the workpiece pedestals 9 and 10, the insertion hole 11 & through which the push-pull head 25 can be inserted is formed. A shaft 82 is rotatable between the second support plate 8 erected on the upper surface of the distal end of the second mounting plate 8 and the eighth support plate 31 erected on the upper surface of the distal end of the eighth mounting plate 4. It is suspended horizontally. At both ends of the shaft 82, there are a pair of substantially triangular push-out arms 88, 84 for carrying out the long work W on the work pedestals 9, 10 toward a carry-out chute 44, which will be described later.
The other corner at the bottom 11 of the spring-out arms 88.84 attached at the lower end-corner of these arms is connected by an interlocking bar 85, and the center part of the lower end surface of both the spring-out arms 88.84 is - Supported by the upper surfaces of receiving portions 86 and 87 protruding from the upper surfaces of the tips of the second and eighth mounting plates 8 and 4. And both pop-out arms 88.84
is rotated about the shaft 82 in the clockwise ejection direction in FIG. Furthermore, the inclined surfaces 733 a and 84 a of the spring-out arms 88 and 84 face diagonally downward with respect to the long workpieces WK on the workpiece pedestals 9 and 10. As shown in FIG. 5, the L-shaped operating lever 88 that rotates the pop-out arms 88, 84 in the clockwise pop-out direction is connected to a pin 89 at one end of the mounting base l. It is mounted so that it can rotate around the center. The horizontal piece 38a of the actuating lever 88 is connected to the first. The second mounting plates 2, 8 are provided, and an interlocking pin 40 is protruded from the tip of the horizontal piece 38a, as shown in FIG. 4, and perpendicular to the interlocking bar 86. Vertical piece 88 of actuation lever 88
b Upper end VC#: is formed with a claw portion 88C having an inclined surface 88d and an engaging surface 88e. And this claw part 88
An interlocking pawl 41 having an inclined surface 41B and a retaining surface 41b that removably engages with the pawl portion 8-8C is pivotally attached to the lower end surface of the moving block 17 located above C. 42 and is prevented from rotating counterclockwise in FIG. 5 by a set screw 48. That is, the work pedestal 9,
A push-out arm 88 for carrying out the long workpiece W on the top 10.
84, the interlocking pawl 4 is moved by the backward movement of the moving block 17.
1. It is operated via the operating lever 88 and the interlocking bar 85. 0. The 4th. The tips of the fifth mounting plates 5 and 6 are bent upward at right angles, as shown in FIGS. A carry-out chute 4 that carries out a long stone work W that is thrown out from above the work pedestals 9 and 10 by 88.81 m.
4 has been defeated. And this unloading chute 4
On the unloading surface of 4, there is an inclined surface '9b of the workpiece pedestal 9.10, 1
A plurality of protrusions 44B continuous to 0b are provided six times at predetermined intervals. ' A headstock device B is disposed in front of the feeding/unloading device A configured as described above, which grips a long workpiece W at a workpiece processing position and rotates the workpiece W at high speed. This main shaft made of metal [BK] will be described in detail according to FIG. is supported by A collet 48 is fitted into the center hole of the main shaft 47, and first and second bolts that releasably grip the outer peripheral surface of the long workpiece W are provided at both ends of the collet 48. The second claw portions 48a and 48b are each formed to be elastically expandable. A cover plate 49 having a tapered hole that fits into a tapered surface formed on the outer peripheral surface of the first claw portion 48a of the collet 48 is fastened to the central hole of the main shaft 47 and the opening at one end with bolts. A pulley 5 of a drive motor 50 is attached to a 7 flange portion 47a formed at the other end of the main shaft 47.
A driven pulley 58 is fixed to the driven pulley 58 via a belt 52, and a cylinder chamber 54 is formed between the Z flange portion 47a and the driven pulley 58. A piston 55 with a flange is installed in the cylinder chamber 54 so as to be movable forward and backward while being prevented from rotating by a pin 56 . One end of the piston 55 is fitted into the center hole of the main shaft 47 and faces the second claw portion 48b of the collet 48, and this portion has a taper that fits into a tapered surface formed on the outer peripheral surface of the second claw portion 48b. A hole is formed. In addition, 59.60 is cylinder chamber 5
No. 4, which supplies hydraulic oil to No. 4. This is the second oil road.

A swing motor 56 is attached to the upper end surface of the headstock 45, and a backup arm 57 is attached to the rotating shaft of the motor 56. A stopper 58 that comes into contact with the front end surface of the long workpiece W fed to the headstock device B by the device AK and stops the long workpiece W at the workpiece processing position.
is installed protrudingly.

In front of the headstock device B, a first tool rest device C2, a second tool rest device, and a tailstock device E are arranged. The end face milling process is performed, and the second tool rest device performs the outer peripheral surface milling process of the long workpiece W by copying process.

Next, the operation of this embodiment configured as described above will be explained.

After placing the long workpiece W on the workpiece pedestals 9 and 10,
When the moving block 17 is moved forward along the guide shaft 15.16 by the push-pull cylinder 20, the push-pull head 25 moves forward toward the long workpiece W on the moving blocks 17 and 5.
When the fitting part 25C of the push-pull head 25 that has passed through the insertion hole 11a of No. 1 is inserted into the rear end of the long workpiece W by a predetermined amount, the steel ball 27 of the fitting part 25C is inserted into the long workpiece W.
comes into contact with the rear end surface of. After that, push-pull head 25
The long workpiece W is fed toward the headstock device B by the forward movement of the headstock device B. In this way, the long workpiece W passes through the piston 55 of the headstock device B, the piston 48 of the headstock device B, and the center hole of the cover plate 49 in this order until it reaches the workpiece processing position where it abuts the stopper 58 of the backup arm 57. be sent. After the front end of the long workpiece W contacts the stopper 58 of the backup arm 57, the moving block 17 continues to move forward and the stopper 21 of the block 17
The push-pull head 2 is moved together with the moving block 17 until it comes into contact with the stopper 22 of the shaft support plate 14.
5 moves forward. The fitting portion 2Scu of the push-pull head 25 is deeply fitted into the center hole of the long work W, and the steel ball 27 of the fitting portion 25C is pressed against the inner peripheral surface of the center hole of the long work W.

As mentioned above, when the long workpiece W is fed to the workpiece machining position, hydraulic oil is fed under pressure to the cylinder chamber 54 of the main spindle [B] through the first oil passage 59, and the piston 155 is thereby When the collet 48 moves forward toward the collet 48&C, the tapered surface of the first claw portion 488 of the collet 48 is inserted into the hole in the cover plate 49. ! 2 claw portion 48
b are pressed against the taper hole of the piston 55, and these first . The inner diameters of the second claw portions 481L and '48b are reduced. And the first. Second claw part 4 g a,
The outer peripheral surface of the long workpiece W is firmly gripped by 48b.

The first collet 48. When the long workpiece W is gripped at the workpiece processing position by the second claws 4ga and 48b, the push-pull head 25 is pushed together with the moving block 17 to a predetermined standby position where the push-pull head 25 is pulled out from the center hole of the long workpiece W. While the pull head 25 is retracted, the pull-up arm 57 is retracted to a predetermined position that does not interfere with the machining of the long workpiece W by the swing starter 56.

After that, when the main shaft 47 is rotated at high speed via the drive motor 50, pulley 51, belt 52, and driven pulley 58,
The torque of the main shaft 47 is applied to the piston 55 and the cover plate 4.
9 to the collet 48.

The long workpiece W rotates at high speed integrally with the collet 48. In this state, the shaft end or outer periphery of the long workpiece W is selectively machined by the first tool post device C or the second tool post device DK.

After processing the long workpiece W, the moving block 17 in the standby position moves forward again, and the fitting part 25C of the push nibble head 25 is deeply fitted into the center hole of the long workpiece W. The steel ball 27 is pressed against the inner circumferential surface of the center hole of the long workpiece W. Then, hydraulic oil is fed under pressure to the cylinder chamber 54 of the headstock device B via the second oil passage 60, and the piston 55 retreats to its original position. As the piston 55 retreats, the lever W is released.

When the long workpiece W is released from the collet 48,
The push-pull head 25 starts to move backward together with the moving block 17. At this time, the long workpiece W moves backward together with the push-pull head 25 due to the gripping action of the steel balls 27 of the push-pull head 25, and the workpiece holder 9 .10. When the long workpiece W is conveyed to the workpiece receiving position on the workpiece pedestals 9 and 10, the rear end surface of the long workpiece W comes into contact with the gate plate 11 and is stopped. Thereafter, the lock 17 continues to move backward, and the push-pull head 25 moves into the insertion hole 11 of the gate plate 11.
After passing through a, the long workpiece W is released from the push-pull head 25.

When the push-pull head 25 passes through the insertion hole 11a of the gate plate 11, the retaining surface 41b of the interlocking pawl 41 disposed on the moving block 17 engages with the engaging surface 88 of the actuating lever 88.
engage with e. Thereafter, when the moving block 17 moves further backward, the operating lever 88 rotates counterclockwise in FIG. The push-out arms 88, 84 rotate clockwise in FIG. 7 about the shaft 82. Then, by the rotation of the push-out arms 88, 84, the long work W on the workpiece pedestals 9, 10 is ejected from the receiving grooves 9a, lQ& of the reed pedestals 9, 10. After passing through the slopes 9b and 10b,
It is carried out from the carry-out shade 44.

After that, the engagement surface 41b of the interlocking pawl 41 and the operating lever 88
After the actuation lever 88 has rotated to a predetermined position where it disengages from the engagement surface 88e, <-88 and the pop-out arms 88, 84 each return to their original positions by their own weight, The moving block 17 retreats to its original position, and one cycle is completed here. In the above embodiment, the backup arm 57
The front end surface of the long workpiece W is brought into contact with the stopper 58, and the long workpiece W is machined using the front end surface as a reference. W processing can also be performed. However, in this case, the stopper 58 of the paddle pull-up arm 57 is provided so as to be movable back and forth via a spring, while the push-pull head 25 is fixed to the head holder 24 of the movable block 17, and in this state, the movable block 17 stopper 21
The long workpiece W may be fed until it comes into contact with the stopper 22 of the shaft support plate 14.

Furthermore, by switchably disposing a plurality of stoppers with different heights on the moving block 17 or the shaft support plate 14, the feeding/feeding stroke of the long workpiece W can be easily changed by Kf. , a steel ball 27 biased by a spring 28 is disposed in the fitting part 25e of the push-pull head 25 to releasably grip the rear end of the long workpiece W, but the push-pull head is It may also be configured as a chuck.

In this case, it is not necessary to provide the gate plate 11 and the backup arm 57. As exemplified above, the present invention provides a feeding/unloading device that uses a push-pull mechanism to After being fed from the workpiece receiving position to the workpiece processing position, the processed long workpiece is transported from the workpiece processing position to the original workpiece receiving position, and then the long workpiece can be carried out by the carryout mechanism. In other words, the feeding and unloading functions of the long workpiece can be performed by one feeding/unloading device installed on one side of the machine, eliminating the need for two devices. In addition, in the headstock device, by advancing the piston toward the collect, the claws at both ends of the collet that fit into the piston and the cover plate in a tapered manner contract, and these claws Capable of firmly gripping the outer circumferential surface of the workpiece.For this reason, headstock devices, which tend to have complicated structures in order to firmly grip long workpieces, are equipped with a headstock, spindle, collet, cover plate, and piston. By configuring the main spindle, the structure can be simplified and the length of the headstock device in the axial direction can be shortened.

Therefore, it is necessary to downsize the entire processing machine, especially the front machine width L.
(See FIG. 1) can be made as small as possible and can be avoided.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view schematically showing the entire processing machine, FIG. 2 is a side view, and FIG.
The figure is a plan view, FIG. 4 is an enlarged plan view of the feeding/unloading device, and FIG. 5 is a partially cutaway front view.
Figure 6 is a sectional view taken along line W-■ in Figure 4, and Figure 7 is a cross-sectional view taken along line ■ in Figure 4.
8 is an enlarged front sectional view showing the headstock device, FIG. 9 is a side sectional view showing another embodiment of the push-pull head, and FIG. 10 is the - It is an X-ray sectional view. 9, lO...Work holder 12...Push-pull mechanism 17...Movement block 25...Push-pull head 88, 84...Spring arm 38...
- Operating lever 44... Unloading chute 45... Headstock 47... Main shaft 48... Collect 49
...Cover plate 54...Cylinder chamber 55.
... Piston Person ... Feeding/exporting device B...
- Headstock device C...First turret device D...
Second turret device E...Tailstock device Patent applicant Toyota Motor Corporation Fuji Machine Manufacturing Co., Ltd. Agent Patent attorney Oka 1) Hidehiko Figure 1 Figure 9 X Figure 10

Claims (1)

[Claims] a feeding/unloading device disposed on one side of the machine for feeding a long workpiece to a processing position and then transporting the long workpiece processed at the processing position; a headstock device that grips a long workpiece in a processing position and rotates the workpiece at high speed; a tool post device that is disposed in front of the device and processes the shaft end or outer periphery of the long workpiece in the processing position; The feeding/unloading device is a processing machine mainly composed of a workpiece holder that receives a long workpiece, and a workpiece holder that is arranged so as to be movable back and forth along the longitudinal direction of the long workpiece on the holder. A pusher that releasably holds the rear end of a long workpiece and reciprocates the workpiece from the workpiece receiving position on the pedestal to the workpiece processing position, and from the workpiece processing position to the workpiece receiving position on the pedestal. The headstock device includes a pull mechanism and a mechanism disposed opposite to a long workpiece on a pedestal to carry out the workpiece, and the headstock device includes a hollow main shaft rotatably supported by the headstock; A collet that is fitted into the center hole of the spindle and has claws at both ends for releasably gripping the outer surface of a long workpiece at a workpiece machining position, and a collet that is disposed in an opening at one end of the center hole of the spindle A cover plate is fitted with a WJK taber on the outer circumference of one of the claws of the collet, and a cover plate is arranged so as to be movable in and out of the cylinder chamber formed on the other end side of the main shaft, and is fitted on the outer circumference of the other claw of the collet with a taper. A shaft end/periphery machining machine for long workpieces, which is characterized by being equipped with a mating piston.