JPS6348371Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION The present invention relates to a rotating indexing device installed in, for example, a processing station of a transfer machine.

Prior Art In a transfer machine, different processing contents are performed at different stations, but processing of the same shape is performed at the same station. If the machining position changes at the same machining station,
The numerical control technology of the machining unit determines the next machining position, and machining of the same shape at different positions is performed continuously. However, it is not possible to handle conditions outside of such an indexable range, so it is necessary to attach the workpiece to another jig.

In such work, it is troublesome to replace the
In addition to taking time to change setups, the number of processing stations increases, making the machine larger.

On the other hand, the applicant for utility model registration
No. 173397 has already proposed a device that can turn a workpiece 90 degrees in the middle of a transfer line. However, with that device, the workpiece can only be rotated within a range of 90 degrees, which does not provide sufficient flexibility, resulting in an increase in the number of turning stations.

Purpose of the invention Therefore, the purpose of the invention is to enable the station of the transfer device to index the workpiece to any rotation angle, and to flexibly adjust to any machining position in conjunction with the numerical control technology on the machining side. The goal is to be able to respond.

SUMMARY OF THE INVENTION Therefore, the present invention provides a guide member for the plate in a reciprocating state at a station position in the conveyance path of the workpiece, that is, a plate for holding the workpiece, and the guide member is provided with rotational drive means. Therefore, by indexing to an arbitrary turning angle,
The rotation angle of the plate, that is, the workpiece held by it, can be freely set.

Structure of the invention Hereinafter, the structure of the invention will be specifically explained based on the embodiment shown in FIGS. 1 and 2.

The plate turning and indexing device 1 of the present invention is installed in a station 5 of a transfer device 2. This transfer device 2 holds a plate 4 between a pair of upper and lower guide rails 3, and transfers the plate 4 to a station 5 by forward and backward movement of a feed claw (not shown).

The rotation and indexing device 1 is assembled into frames 7 and 8 on a base 6 installed on the station 5. A reduction gear 10 serving as rotational driving means and a servo motor 11 connected thereto are mounted on the same axis through a cylindrical housing 9 on the back side of the rear frame 7. In addition, the frame body 7
The rotating shaft 12 is rotatably supported by a roller bearing 13 at its center. This rotary shaft 12 integrally forms a cylinder 14 at the center position, that is, on the same axis as the reducer 10, and supports a rod 16 of a piston 15 therein so as to be able to move forward and backward. The frame body 7 and the rotating shaft 12 form a rotation connector with an annular groove, and communicate the fluid passages 17 and 18 of the frame body 7 with the front and rear chambers of the cylinder 14. Further, a sensor 19 is attached to the frame 7 to detect the original position of the rotating shaft 12 in the rotational direction.

On the other hand, a rotating body 21 is rotatably supported on the front frame 8 by a horizontal sliding bearing 20 on the same axis as the reducer 10 and the like. This rotating body 21 is connected to the front side of the rotating shaft 12 by a rotating coupling body 22 on the back side. In addition, this rotary body 21 has an appropriate number of positioning pins 23 fixed on the front side, and also has four positioning pins 23 on the top, bottom, left and right.
The horizontal guide bar 25 is controlled by the bushing 24.
It is held freely moving forward and backward. This guide bar 25
are connected to a common connecting plate 26 fixed to the tip of the rod 16. Further, the upper guide bar 25 and the lower guide bar 25 are connected to the plate 4.
A pair of upper and lower guide portions 27 are held for guiding. The upper and lower guide portions 27 form grooves for guiding the plate 4 at opposing portions, and are located on the same line as the guide rail 3 when in the forward position, and guide the left and right guide rails 3. This station 5 is used continuously. In order to detect the position of this guide portion 27, sensors 28 and 29 are provided on the frame body 7 for detecting forward limit and backward limit.
is attached. The plate 4 has a workpiece 31 to be machined positioned and fixed by a jig 30 fixed at the center.

Function of the invention Next, the function of the rotation and indexing device 1 will be explained.
In the standby state, the piston 15 is at the forward limit position due to the pressure fluid from the fluid passage 17, so the guide portion 27 has moved to the same position as the guide rail 3 of the transfer device 2. In this state,
The transfer device 2 transfers the plate 4 along the guide rail 3 to the position of the processing station 5, that is, the position of the upper and lower guide portions 27.
Here, the pressure fluid is switched to the fluid passage 18 side and the piston 15 retreats, so the plate 4
moves backward while being held by the upper and lower guide parts 27,
The positioning pin 23 positions the rotating body 21, and at the same time, the force of the guide portion 27 in the backward direction causes the clamping state. This clamp state can be confirmed by the sensor 29.

Thereafter, since the servo motor 11 rotates by a required rotation angle under servo control, the rotation is transmitted to the rotating body 21 via the reducer 10, the rotating shaft 12, and the rotating coupling body 22. Therefore, the rotating body 21 rotates on the same plane together with the guide portion 27 while clamping the plate 4 in a positioned state, and is accurately indexed to an arbitrary rotation angle. In this state, necessary cutting is performed by a processing unit (not shown).

When this machining is completed, the servo motor 11
By rotating in the opposite direction, the plate 4 is returned to the rotation angle at the time of conveyance, and the original position is confirmed by the sensor 19. After this confirmation, the cylinder 14 moves the piston 15 to its forward limit, so that the plate 4 advances to the position of the guide rail 3 of the transfer device 2, and is in a state where it can be transferred onto the guide rail 3. Here, the plate 4 is transported to the next station position by a sending function such as a feeding claw of the transfer device 2.

Modified example of the invention In the above embodiment, the cylinder 14 is formed integrally with the rotating shaft 12, but if the cylinder 14 is a part that rotates integrally with the rotating shaft 12, it may be provided separately in another part. You can. Further, the guide portion 27 is
Instead of a simple groove, a roller or the like may be provided to reduce resistance. In the illustrated embodiment, the plate 4 is transferred along a vertical plane, but the attitude of the plate 4 at the time of transfer may be horizontal or inclined. The mounting at one station 5 may be vertical or oblique.

Effects of the invention In this invention, the plate and workpiece can be indexed to any rotation angle at the processing station, so in combination with a numerically controlled processing unit, processing can be performed at any position, and therefore setup changes can be made. This eliminates the need for such troublesome operations, and machining at different index positions can be performed continuously at the same machining station.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the positional relationship between the rotation and indexing device of the present invention and the transfer device, and FIG. 2 is a vertical sectional view of the rotation and indexing device of the present invention. DESCRIPTION OF SYMBOLS 1...Plate rotation indexing device, 2...Transfer device, 4...Plate, 5...Station, 7, 8...Frame body, 10...Reducer, 11
... Servo motor, 12 ... Rotating shaft, 14 ... Cylinder, 15 ... Piston, 16 ... Rod, 2
1... Rotating body, 23... Positioning pin, 24...
bush, 25... guide bar, 27... guide section, 30... jig, 31... work.

Claims (1)

[Scope of utility model registration request] In an apparatus for transporting a plate with a workpiece attached thereto, supporting the plate while guiding it on a station, and clamping the plate in a positioned state, a rotary drive means fixed to a frame body at a station position;
A cylinder connected to the rotation drive means and rotatably supported on the frame, a plurality of guide bars provided integrally with the piston of the cylinder, and a guide portion of the plate provided at the tip of the guide bar. A plate turning and indexing device comprising: a guide member for the guide bar rotatably supported on the frame; and a positioning means for the plate.