JPH05269534A - Rotating positioning device for worked surface at end part in long size article to be worked - Google Patents

Abstract

PURPOSE:To provide a rotation controlling/positioning mechanism which can obtain a prescribed working surface automatically by controlling and rotating the end part of a long size article to be worked round the Z axis on a working machine. CONSTITUTION:The long size article to be worked is mounted on an end part working machine wherein the long article to be worked is moved by a push-in device Pz in the longitudinal direction with a clamping device G, the end part to be worked is pushed into a set position of a working part and multiform working is given to the end part of the article to be worked. On the minor diameter part are provided an annular rotating part 24 to fix and support a clamping device G and a fixing part connected with a saddle part of the push-in device Pz and supporting the rotating part rotatably round the Z axis line, a step motor 18 is provided on the fixing part 16a and the rotating part 23 is controlled and rotated by driving and controlling the step motor 18 through gear mechanisms 19, 21, 24c and to obtain a desired worked surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end portion of a long work piece having a predetermined length, for example, an end portion of an aluminum mold material which is a constituent member of an aluminum sash frame previously cut into a predetermined length. When performing various machining on the peripheral surface, the workpiece is controlled and rotated around the Z axis together with the gripping device to automatically position the end machining surface of the workpiece on a preset machining surface. A positioning device.

[0002]

2. Description of the Related Art Generally, not only the above-mentioned aluminum mold material but also the end of a long work piece cut into a predetermined length is subjected to various kinds of processing necessary for final assembly. Even if you look at the end processing of the aluminum mold material, notches, punching on the four faces of the end,
Not only several kinds of processing such as drilling are performed, but also the processed shapes are various. Most of these processes are mainly press processes, and generally, a series of processes are performed manually for each individual product. Therefore, work efficiency is low and improvement in productivity by automation etc. is strongly desired.

In order to meet this demand, conventionally, a multi-head press machine in which a plurality of sets of dies provided with a predetermined die is arranged side by side is adopted, and the series of processing is sequentially performed.
However, since these works are still manual work, the work load is large, and the number of installed die sets is limited, so that it is difficult to finish the series of processes in one work. , I had no choice but to install multiple multi-head presses, which was a problem in terms of space.

In order to solve the problem of the space and to save labor, for example, Japanese Patent Laid-Open No. 3-198930 discloses a method and apparatus for processing an aluminum mold material for realizing full automation. According to the processing device disclosed in the publication, a large number of press machines equipped with different press dies each having a unique code are installed in parallel on the X-axis and Y-axis of plane coordinates in a multi-stage manner. , A sash type material feeding device is installed on the side of the sash type material, and the X-axis and Y-axis plane coordinate systems are moved by numerical control on the front surfaces of the plurality of press machines, and at the same time, the front and rear (Z
A gripping device for an aluminum mold member is disclosed, which is controlled by three axes that move in an axial direction. When processing the end of the aluminum mold,
The gripping device horizontally grips one of the aluminum die members that are sequentially supplied side by side by the supply device and waits on the side of the processing device. Based on a preset processing sequence, first, along the X and Y axes. Is transferred to the front surface of the press machine that performs the first processing, where the end of the aluminum mold material to be processed is moved in the direction (Z-axis direction) of pushing into the desired mold of the press machine, and into the same mold. The end to be processed is pushed in to perform desired press processing. When this processing is completed, the gripping device retracts to draw the aluminum mold material out of the mold,
Then, while holding the aluminum mold, the aluminum mold is moved along the X-axis and the Y-axis, and stopped at the front of the press machine for the next processing. After that, the gripping device advances along the Z-axis to push the aluminum mold material into the press machine and perform the second press working.
After that, the operation is repeated according to the above processing order,
All processing is done.

[0005]

However, in the proposal for automation described in the above publication, the aluminum mold material, which is a long workpiece, is gripped by the gripping device, and the gripping device is machined for the purpose. X, Y, Z to the front of the specified press machine
Although a general system for a conventional machine tool for moving in the axial direction and a drive mechanism of a press machine are schematically shown, the other configurations are merely conceptually disclosed, and the gripping device happens to be used. Can be rotated around a vertical axis, and a long workpiece to be gripped at the center can be controlled and rotated around the vertical axis, and both ends of the workpiece can be processed with the same press machine. Although the specific configuration of the gripping device is not disclosed at all, the specific configuration in which the gripping device is controlled to rotate around the Z axis is naturally disclosed until now. Absent.

By the way, when the end of the aluminum mold is machined as an example of the long work piece, the end of the aluminum mold before machining is hollow, and the four faces are flat and the cross-sectional shape is It has a complicated shape, not just a rectangle. In the end processing, various processing such as perforation, notch, slitting, etc. is performed on each of the four surfaces. Furthermore,
This kind of aluminum mold material has a wide variety of dimensions, and it is necessary to accurately position the end part at the processing position according to each dimension by numerical control etc., but in this case an extremely complicated procedure. , And a complex mechanism therefor are required.

Therefore, in order to realize complete automation in processing an end of a long work piece, desired processing is continuously and automatically performed on each of the four surfaces of the same end of the work piece. Therefore, it is necessary to develop a mechanism that can freely change the end surface to be set in the processing part on the handling part.

The present invention has been made in view of the above circumstances, and its main purpose is to make it possible to controlably rotate the end portion of the workpiece on the gripping device about the Z axis, and automatically perform a predetermined processing surface. The purpose of this is to develop a rotation control positioning mechanism that can be changed to the other, and other objects will be clarified by the description of the preferred embodiment described later.

[0009]

In order to achieve the above object, the present invention moves a long work piece together with a gripping device in a longitudinal direction by a pushing device, and moves the end of the work to a set position of a working part. It is installed in an end processing machine that pushes in and performs various processing on the end of the work piece, and is connected to the ring-shaped rotating part that fixedly supports the gripping device in the inner diameter part and the saddle part of the pressing device, A fixed part for rotatably supporting the part around the gripping center line of the gripping device, the fixed part has a control rotation driving means, and a rotation transmission mechanism is provided between the fixed part and the rotating part. A rotary positioning device for a machined end surface of a long workpiece, which is characterized by being provided.

More specifically, the control rotation drive means is a step motor, and the rotation transmission mechanism meshes with a gear fixed to the output shaft of the step motor, an intermediate gear meshing with the gear and an intermediate gear. The rotating part is formed with external teeth formed on the outer peripheral surface, and further, the driving means of the gripping device is an air cylinder, and the fixed part has an air pressure passage connected to an air pressure supply source. The air pressure passage is communicated with the air cylinder via an air pressure passage formed in the rotating portion.

[0011]

According to a control command according to a preset procedure while the workpiece is gripped by the gripping device, the gripping device is arranged in a grid pattern in the processing device disclosed in Japanese Patent Laid-Open No. 3-198930. The X-axis moving device and the Y-axis moving device operate on the front surfaces of the many punching machines, the gripping device moves along the X-axis and the Y-axis, and stops at the front surface of the predetermined punching machine. After the stop, the servo motor is activated by the control command to rotate its output shaft. The feed screw is rotated by the rotation of the output shaft, and the saddle portion fixed to the feed nut and the gripping device connected to the saddle portion via the cushioning unit are integrated so that the table is turned toward the processing portion. Sent out.

In this way, when the gripping device grips the workpiece and advances its front end toward the machining section by a predetermined stroke, and the tip of the workpiece reaches a predetermined position in the machining section,
The tip thereof abuts the stopper, for example. The collision noise at this time is detected to stop the rotation of the servo motor. Of course, instead of detecting the contact noise and stopping the rotation of the servo motor, the drive of the servo motor may be controlled by ordinary numerical control.

By the way, in the case of a work piece having a material or structure which is easily deformed, such as an aluminum mold material, when the front end surface of the work piece collides with an obstacle, the reaction force is large, the work piece is processed by a normal end pushing device. The product is subject to large impact and is likely to be deformed or damaged. However, according to the present invention, when the aluminum mold material, which is the workpiece, collides with not only the stopper but also the peripheral equipment of the machined portion, the impact is alleviated by the shock absorbing means interposed between the saddle and the gripping device. Prevents deformation and damage of processed products.

Further, according to the present invention, a first supporting plate member made of a plate member having a certain length is fixed to the upper surface of the saddle member, and a second supporting plate member having the same length is fixed to the lower surface of the gripping device. When the buffer means is interposed at the four corners of the first support plate material and the second support plate material and is joined by the restricting members that allow the relative movement of both support plate materials to some extent at the substantially central positions thereof, the workpiece is an obstacle. It is possible to minimize the elastic deformation of the cushioning means when it is struck by the contact between the first support plate and the second support plate, and at the same time to restrict a large relative movement between the first support plate and the second support plate. , Does not cause a large deformation to each supporting plate material.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 is an overall perspective view showing a typical embodiment of a handling unit equipped with a rotary positioning device of the present invention, FIG. 2 is a vertical cross-sectional view of the same, and FIG. 3 is a front view showing a part of the same cut out. FIG. 4 and FIG. 4 are plan views showing a part of the same by cutting out.

The above-mentioned handling section is the same as the above-mentioned Japanese Patent Laid-Open No. 3-1
This is equivalent to a handling device (not shown) for an aluminum mold member in the machining device disclosed in Japanese Patent Publication No. 98930, which holds the aluminum mold member horizontally, and based on a control command from a control panel (not shown), the end portion of the workpiece. Has a function of moving back and forth in the longitudinal direction toward the processed portion along the Z axis.

As shown in FIG. 1, the handling section according to this embodiment includes an aluminum mold holding device G and a rotary positioning device RP which rotates around the Z axis while holding the aluminum mold material to position the machined surface of the aluminum mold material. , And an end-pushing device Pz of an aluminum mold for moving the gripping device G and the rotary positioning device RP back and forth along the Z axis. this house,
The gripping device G and the end pushing device Pz are not the direct objects of the present invention, and therefore, both the devices are not limited to the illustrated examples, and it goes without saying that a known gripping device can be adopted.

As described above, the rotary positioning device RP in the above-mentioned handling portion is a direct object of the present invention. Therefore, in the following description, the rotary positioning device RP will be mainly described. 1 to 4, reference numeral 1 denotes a table made of a long plate material having a concave cross section, and guide rails 2 are integrally fixed to the upper surfaces of both side protruding portions 1a of the table 1 over the entire length. Has been converted. A servo motor 3 is fixedly installed at the rear end (right end in FIG. 2) of the table 1. A feed screw 4 is connected to an output shaft 3a of the servo motor 3, and both ends of the feed screw 4 are connected to each other. It is rotatably supported via a bearing 6 on a support member 5 provided upright in the recess 1b of the table 1. Further, at the joint between the output shaft 3a of the servo motor 3 and the feed screw 4 and the front end of the table 1 (the left end in FIG. 2), the front and rear ends of a cover 7 that covers the upper surface of the feed screw 4 described later are supported and fixed. The supporting member 8 for fixing is fixed.

A feed nut 9 is screwed onto the feed screw 4, and the feed nut 9 holds the nut 9 in a block 1.
It is fixed to the lower surface of the saddle member 11 via 0. As shown in FIGS. 2 and 3, the saddle member 11 is a plate member having a concave cross section in which a total of four rail sliding members 12 are provided on the lower surface in the front, rear, left and right directions. Sliding grooves 12a are formed on the lower surface, and each sliding groove 12a is fitted to a pair of left and right guide rails 2 extending on the upper surface of the table 1. Then, the end portion of the cover 7 is fixed to the support member 8 fixed to the front and rear of the table 1 so as to penetrate the space of the upper surface recess 11a of the saddle member 11 in the front and rear. Therefore, when the feed screw 4 rotates, the saddle member 11 moves on the table 1 along the guide rail 2
The vehicle will move back and forth along the Z axis. In this embodiment, a ball screw and a ball nut are used as the feed screw 4 and the feed nut 9.

A first support plate 13 is fixed to the upper surface of the saddle member 11 so as to be longer than the length of the saddle member 11, and both side portions 13a in the width direction thereof are bent downward in FIG. The saddle member 11 and the first support plate 13 form a saddle portion of the end pushing device Pz. Further, a second support plate 15 is fixedly provided above the first support plate 13 through a cushioning means, with a portion slightly longer than the first support plate 13 leaving a center part thereof, which is lightened. In this embodiment,
A hard elastic rubber molded body 14 is used as the cushioning means, and the structure thereof has a thin flange portion 14a extending forward and backward on the upper surface as shown in FIGS. 2 and 3, and a bottom portion 14b having a thin concave shape. And the standing portions 14c in front of and behind it have a thickness having a substantially rhombic cross section. Of course, the material and structure of the cushioning means are not limited to the rubber molded body 14, and for example, various springs made of metal can be used.

Further, in this embodiment, 4 having the above-mentioned structure is used.
Each rubber molded body 14 has its bottom portion 14b fixed to the four corners of the first support plate 13 and the flange portions 14a fixed to the lower surface of the second support plate 15, respectively. And the second support plate 15 as shown in FIG.
A roller 15a is rotatably attached to a lower end of a substantially central portion of the roller 15a, and the roller 15a is fitted into a concave portion of a concave-shaped fitting member 13b fixed to a position facing the first support plate 13. I am letting you.

In this embodiment, the second support plate 15 is used.
A rotary positioning device RP according to the present invention is placed and fixed on the plate, and the aluminum gripping device G is rotatably supported by the positioning device RP. The rotary positioning device RP of the present invention is
As shown in FIGS. 1 to 4, a fixed portion main body 16 having a bearing portion 16a in the upper portion and a fixed flange portion 16b in the lower portion and having a substantially ring shape as a whole is fixed to the upper surface of the bearing portion 16a. The support block 17 for fixedly supporting the step motor 18 and the gripping device G are fixedly mounted, and are rotatably attached to the inner diameter surface of the fixed part main body 16 via a ring-shaped bearing member 23. And a rotating portion main body 24. A shaft body 20 having an intermediate gear 19 fixed to one end thereof is rotatably supported by a bearing portion 16a of the fixed portion main body 16, and a fixed portion is provided on an upper surface slightly forward of the center of the second support plate 15. The ring surface of the main body 16 is fixed through the fixing flange portion 16b so as to be orthogonal to the longitudinal axis of the table 1.

The output shaft 18a of the step motor 18 supported on the rear portion of the support block 17 has a gear 2
1 is fixed, and the gear 21 meshes with the intermediate gear 19. Further, a sound wave detector 22 is installed on the front surface of the support block 17, and the sound wave detector 2 is provided.
2 does not necessarily have to be installed.

A rotary part main body 24 is rotatably attached to the inner diameter surface of the fixed part main body 16 having the above structure via a ring-shaped bearing member 23. The rotating portion main body 24 has a ring shape having an outer diameter substantially equal to the inner diameter of the fixed portion main body 16, and a pair of mold material gripping devices G is fixedly installed in front of and behind the rotating portion main body 24.

A plurality of O-ring fitting grooves 24a are formed in the circumferential direction on the outer peripheral portion of the outer peripheral surface of the rotating portion main body 24 with which the inner diameter surface of the fixed portion main body 16 abuts. Also,
A cutout portion 24b is formed in a portion of the outer peripheral surface where the ring-shaped bearing portion 16a is tightly fitted and fixed, and the intermediate gear 19
External teeth 24c are formed on the outer peripheral surface facing the.

The outer teeth 24c of the rotary body 24 are
Is meshed with the intermediate gear 19 of the fixed portion main body 16 and is rotatably supported by the inner diameter surface of the fixed portion main body 16 via the ring-shaped bearing portion 16a. At this time, at the same time, the O-ring 26 is fitted in the O-ring fitting groove 24a, and a ring-shaped void formed between the O-ring fitting groove 24a and the O-ring 26 will be described later in the mold material gripping portion 25. It is used as a pneumatic pressure supply / discharge passage to the operating air cylinder 28. Therefore, the O
An air supply / exhaust path (not shown) communicating with the ring fitting groove 24a is formed, and the rotary body 24 has the O
An air supply / exhaust path (not shown) is formed to connect the ring fitting groove 24a and each of the air cylinders 28. Therefore, no pipes for air supply / exhaust are provided between the fixed part main body 16 and the rotary part main body 24, so that the rotation of the rotary part main body 24 is not hindered. I have to.

A desired number of support brackets 27 for fixedly supporting the mold material gripping device G projecting forward and backward are provided from the front and rear surfaces sandwiching the rotary body 24. The mold material gripping device G includes an air cylinder 28 fixed to the support bracket 27, and a mold material gripping member 29 driven by the air cylinder 28. According to the present embodiment, the air cylinder 28 is used as the rotating body 2
A pair of first and second air cylinders 28a and 28b are arranged in front of and behind 4, respectively, at a predetermined distance from the center of gripping a mold material (not shown).

Then, the first air cylinder 28a
Is a plate-shaped gripping member 29a orthogonal to its operating direction.
Is fixed to the second air cylinder 28b, and a plate-shaped gripping member 30 having a mold material gripping surface 30a which is arranged in parallel facing the plate-shaped gripping member 29a is integrally attached to the second air cylinder 28b. Further, the second air cylinder 28b is provided with two plate-shaped gripping members 29b and 29c arranged in parallel at right angles to the operating direction, and one plate-shaped gripping member 29b is the second plate-shaped gripping member 29b. Is directly driven by the air cylinder 28b, and the disposition position of the other plate-shaped gripping member 29c is fixed. Therefore, when the pair of air cylinders 28a, 28b arranged in front of and behind the rotary unit body 24 are actuated in the direction for gripping the mold material, the plate-shaped gripping members 29a, 29b, 29c, Thirty
The intervals between the two are narrowed all at once, and the respective gripping surfaces firmly grip the outer surface of the mold material from the four sides in front of and behind the main body 23. It is obvious that the present invention is not limited to the illustrated embodiment, and any type of gripping mechanism can be adopted.

In the handling section according to the present embodiment having the above-mentioned structure, the table 1 is not shown in the drawings, which is known, in which the table 1 moves horizontally along the front surface of the processing machine along the X axis and vertically along the Y axis. The moving member is cantilevered via a bracket (not shown), and moves vertically along the Y axis. At the time of this movement or when the movement is stopped, the rotating portion main body 24 of the rotary positioning device RP rotates 90 ° or 180 ° around the Z axis on the inner diameter surface of the fixed portion main body 16 to preset the aluminum mold material. It is rotationally positioned so that the surface to be machined is accurately set on the machined part. After that, the end pushing device Pz is operated, and the gripping device G
Also, the rotary positioning device RP is integrally moved forward and backward along the Z axis toward a processing unit (not shown).

Among these operations, the operation of the rotary positioning device RP according to the present invention will be mainly described with reference to the drawings. Although the end pushing device Pz is not directly targeted in the present invention, it will be described in detail here because it has a novel configuration and function. Further, as the gripping device G, a known mechanism can be adopted as long as it is a mechanism capable of gripping a mold material, and therefore its operation will be briefly described in the following description.

Air of a required pressure is supplied from an air supply source (not shown).
The air is supplied to the pair of air cylinders 28a and 28b through an air supply passage (not shown) formed in the fixed portion main body 16 of the rotary positioning device RP and a gap portion of the O-ring fitting groove 24a formed in the rotary portion main body 24. Each air cylinder 2
8a, 28b actuate to grip an aluminum mold (not shown) between the plate-shaped gripping members 29a to 29c and 30, and in that state, based on a command from a control panel (not shown), the rotary positioning device RP and the gripping device G. However, for example, the above-mentioned Japanese Patent Laid-Open No. 3-198.
In the processing apparatus disclosed in Japanese Patent Publication No. 930, the front surface of a large number of punching machines arranged in a grid pattern is moved along the X axis and the Y axis and stopped at the front surface of a predetermined punching machine.

During the movement, or after the movement is stopped, a command is issued from the control panel as required, the step motor 18 of the rotary positioning device RP is activated to rotate the gear 21 by a predetermined angle, and the fixed part main body is rotated. The rotary unit main body 24 is rotated together with the gripping device G by a desired angle (usually 90 ° or 180 °) via an intermediate gear 19 provided on the shaft 16. By this rotation, the machined surface of the aluminum mold material gripped by the gripping device G is also changed to a desired machined surface when it is pushed into the machining section.

Next, when the end pushing device Pz is in the state shown in FIG.
Starts to rotate the output shaft 3a. The rotation of the output shaft 3a causes the feed screw 4 to rotate, so that the saddle member 11 fixed to the feed nut 9, the first support plate 13 fixed to the upper surface of the saddle member 11, and the first support plate 13 are fixed. The second support plate 15 fixed via the rubber molding 14 and the rotary positioning device RP and the gripping device G mounted and fixed on the second support plate 15 are integrally formed on the guide rail on the table 1. It is sent to the front (left of FIG. 2) along.

In this way, the rotary positioning device RP and the gripping device G advance a predetermined stroke toward the pressing portion of the pressing machine (not shown) with the front end thereof in a state where the aluminum mold material (not shown) is rotationally positioned and gripped. The front end of the aluminum mold material reaches a predetermined position in the press portion, and the front end abuts a stopper (not shown), for example. The collision sound at this time is detected by the sound wave detector 22 and the rotation of the servo motor 3 is stopped. In this embodiment, the collision noise is detected and the rotation of the servo motor 3 is stopped. However, in the case where the end portion of the workpiece is simply pushed into a predetermined position, normal numerical control is performed. The rotation of the servo motor 3 may be controlled by.

By the way, in a work piece having a material or structure which is easily deformable, such as an aluminum mold material, when the front end surface of the work piece collides with an obstacle, if the reaction is large, the work piece is processed by a normal end pushing device. The product is subject to large impact and is likely to be deformed or damaged. However, in the present embodiment, when the aluminum mold material as the work piece collides with not only the stopper but also the peripheral equipment of the work part, the saddle part and the rotary positioning device R are provided.
The rubber molded body 14 interposed between the mold material gripping portion such as P
The shock absorbing means, such as
The work piece is prevented from being deformed or damaged.

Further, according to the above embodiment, the saddle member 11
The first supporting plate member 13 fixed to the upper surface of the above and the second supporting plate member 15 fixed to the lower surface of the rotary positioning device RP are made of long plate members to some extent, and the rubber moldings at the four corners are cushioning means. The provision of 14 makes it possible to minimize the elastic deformation of the rubber molding 14 when the workpiece collides with an obstacle. At the same time, the first and second support plate members 13 and 15 are fitted with the rotary roller 15a on the fitting member 13a having a substantially concave shape at the substantially central portion thereof. Since the front and rear relative movements between 15 are regulated and a slight movement in the left and right direction and a slight twist in the up, down, left and right directions are allowed, the respective support plate members 13 and 15 are prevented from being greatly deformed.

[0037]

As is apparent from the above description, the rotary positioning apparatus for a workpiece according to the present invention has a fixed portion main body connected to a saddle portion which moves forward and backward toward the processed portion, and a fixed portion main body of the fixed portion main body. Since the workpiece gripping device is fixedly supported on the inner diameter portion of the rotating body, it is provided with a ring-shaped rotating portion main body that is controlled to rotate along the inner diameter surface. At the time of pushing in, it becomes possible to control-rotate the workpiece gripped by the gripping device around the gripping center line via the rotating part main body, and a desired machined surface can be freely obtained on the processing machine. Therefore, it becomes possible to successively perform various kinds of processing on the peripheral surface of the end of the long work piece, and it is possible to realize complete automation of this kind of processing machine.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire handling part in an end processing machine for a long work piece provided with an end pushing device for a work piece according to the present invention.

FIG. 2 is a vertical sectional view of the handling section.

FIG. 3 is a front view showing an incision of a part of the handling section.

FIG. 4 is a plan view showing an incision of a part of the handling unit.

[Explanation of symbols]

 1 Table 1a Projection 1b Recess 2 Guide rail 3 Servo motor 4 Feed screw 5,8 Support member 6 Bearing 7 Cover 9 Feed nut 10 Block 11 Saddle member 12 Rail sliding member 12a Gap 13 First support plate 14 Rubber molded body 14a Flange part 14b Bottom part 14c Standing part 15 Second support plate material 16 Fixed part body 16a Bearing block 16b Fixed part 17 Support block 18 Step motor 18a Output shaft 19 Intermediate gear 20 Shaft body 21 Gear 22 Sound wave detector 23 Ring bearing 24 (Ring-shaped) Rotating Part Main Body 24a O-ring Fitting Groove 24b Notch 24c External Teeth 25 Profile Holding Part 26 O-ring 27 Support Bracket 28 Air Cylinders 29a to 29c, 30 Plate-like Holding Member RP Rotation Positioning Device Pz Long Workpiece end pushing device G gripping device

Claims (4)

[Claims] 1. A long work piece is moved in the longitudinal direction together with a gripping device (G) by a pushing device (Pz), and the end portion of the work piece is pushed to a set position of a working portion, so that the end portion of the work piece is formed. It is installed in an end processing machine that performs various processing, and is connected to a ring-shaped rotating part (24) that fixedly supports the gripping device (G) on an inner diameter part and a saddle part of the pushing device (Pz). A fixed part (16) for rotatably supporting the rotating part around the gripping center line of the gripping device (G), the fixed part (16) having a control rotation drive means, and the fixed part (16). And a rotary unit (24) between the rotary unit (24) and the rotary unit (24). A rotary positioning device for a machined end surface of a long workpiece. 2. The rotary positioning device according to claim 1, wherein the control rotary drive means is a step motor. 3. The rotation transmission mechanism includes a gear fixed to an output shaft of the step motor, an intermediate gear meshing with the gear, and a part of an outer peripheral surface of the rotating portion (24) meshing with the intermediate gear. The rotary positioning device according to claim 2, wherein the rotary positioning device comprises external teeth formed on the. 4. The driving means of the gripping device is an air cylinder, the fixed portion has an air pressure passage connected to an air pressure supply source, and the air pressure passage is an air pressure formed in the rotating portion. The rotary positioning device according to claim 1, wherein the rotary positioning device is in communication with the air cylinder via a passage.