JPS60195B2 - Work handling equipment for forging disc-shaped parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work handling device for forging disc-shaped parts such as discs and discs with shafts.

Conventional horizontally opposed forging machines do not have a handling device for discs or discs with shafts, and therefore cannot forge these, and have been used exclusively for forging simple round and square bars.

Conventionally, when free forging disk-shaped parts such as turbine disks, impeller covers, large gears, etc. using a vertical forging machine, as shown in Fig. 1, the workpiece (material) held by the gripper a Place b on anvil c and attach
Using a hammer or press, pressure was applied from the direction of the arrow to repeatedly perform partial forging.

This processing method is a simple processing method and does not require any special equipment, so it is suitable for high-mix, low-volume production. However, it requires a long forging time, requires reheating, has low precision, and is difficult to work in. It was also bad. Therefore, with this method, there is a large loss of material due to the reduction of bran due to heating and low precision.
In addition, since pressure is applied only from above, the workpiece b may be misaligned, and additional man-hours are required, which is not preferable from the point of view of energy saving. The present invention has been made in view of the above-mentioned circumstances, and includes a tong head rotatably attached to a movable carrier, a tong lever provided to the tong head so as to be openable and closable via a parallelogram link mechanism, and the tong lever. A workpiece gripper is rotatably attached to the tip of the tool so that the workpiece can be gripped from both ends in the workpiece axis direction, and a rotating roller is brought into contact with the workpiece being gripped by the workpiece gripper to hold the workpiece around the workpiece axis. This invention relates to a workpiece handling device for forging a disk-shaped part, characterized by comprising a workpiece rotation mechanism for rotating the workpiece.

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

As shown in FIGS. 2 and 3, a tong head 4 is attached to one end of a shaft 3 which rotatably passes through a bearing 2 attached to the upper part of the carrier frame 1, which is equipped with a movable carrier frame 1. The ends of opening/closing levers 6, 6 whose tips are connected to the ends of the tong levers 5 by pins are connected to the left and right sides of the tong head 4, and the opening/closing levers 6, 6 are connected to each other by pins.
The opening/closing levers 6, 6 are configured to be opened and closed by connecting an appropriate intermediate portion thereof to a drive device (not shown) such as a cylinder, and the workpiece 7 is placed at the tip of each of the tongue levers 5 in the direction of the center of the vehicle. A so-called parallelogram link mechanism is formed by rotatably mounting a center 8 for gripping from both ends, and arranging a link 9 between a suitable position in the middle of each of the tongue levers 5 and a suitable position on the tongue head 4. Accordingly, the tongue levers 5, 5 are configured to be able to open and close in parallel, and furthermore, a connecting portion 10 is provided at the other end of the shaft 3 to connect a drive device (not shown) to rotate the shaft 3.

Further, the end of the moving lever 12, which has a roller 11 for rotating the workpiece at one end, is movably attached to a bracket 14 on a frame 13 provided at the lower front of the tong head 4, and is attached to the shaft of the roller 11. The attached sprocket 15 and the drive sprocket of the drive device 16 provided on the frame 13.

The roller 1 is connected to the roller 17 with a chain or the like.
The center part of an L-shaped arm 19 is attached to a bracket 18 fixed to the lower part of the tong head 4, and one end of the arm 19 is linked to the middle part of the stool lever 12. 20 and said arm 19
A spring shaft 22 is interposed between the pond end and the upper overhanging bracket 21 of the tongue head 4, so that the spring force can press the roller 11 against the workpiece 7 via the arm 19, the link 20, and the tilting lever 12. 23 in the figure is a forging tool in a horizontally opposed forging machine. Next, the operation of the workpiece handling device having the above configuration will be explained using an example of a case where it is used in a horizontally opposed forging machine.

First, in order to grip the workpiece 7 such as a disk or a disk with a shaft at the centers 8, 8 of the present handling device, for example, the tongs of a forging manipulator 24 as shown in FIG. 8 provided on the opposite side of the present handling device are used. Work 7 is carried in at 25.

If the gripping surface of the carried-in workpiece 7 is rough, the surface is once flattened using forging tools 23, 23 as shown in FIG.
8 to grip the center of the workpiece 7. At this time, as shown in FIG.
Push in lightly to firmly grip the workpiece 7. At this time, the tong levers 5, 5 open and close symmetrically with respect to the rotational axis of the tong head 4 via a parallelogram link mechanism formed by an opening/closing lever 6, a link 9, etc., so that the workpiece 7 cannot be gripped. Easy to handle and align. Further, the roller 11 is pressed against the edge of the workpiece 7. When performing edge beating work in this state, as shown in FIG. 6, a drive device (not shown) moves the tongs head 4 from the state shown in FIG. The carrier frame is rotated by 90 degrees, and the carrier frame is moved and adjusted so that the rotation axis D of the workpiece 7 is positioned on the forging line connecting the tools 23 and 23.

In this state, the edges of the workpiece 7 are pressurized from both sides, and the workpiece 7 is rotated by the driving device 16 in increments of 4 mm between the pressurizations. On the other hand, when performing diameter-setting work, the tongs head 4 is moved 900 degrees so that the disk portion of the workpiece 7 is located in a vertical plane, as shown in FIG.
The disk part of the work 7 is pressurized from both sides at the same time as the edge punching operation, and the work 7 is rotated little by little to move the work 7 forward and backward as necessary.

By rotating the workpiece 7 in small increments in this manner, a disk or a disk-shaped component with a shaft can be forged quickly and accurately using a horizontally opposed forging machine. In addition, in FIG. 3, 26 is a cushion for relieving force when the workpiece 7 being forged receives force in the horizontal direction. By providing such a horizontal cushion 26, the tool 23 on one side This handling device can also be used on horizontal forging machines that only operate.

Furthermore, as an example of the aforementioned driving device connected to the shaft 3 to rotate the tongue head 4 or to move the carrier frame 1 back and forth, there is a manipulator mainly used for handling baggage forging as shown in FIG. There are 24.

Of course, this manipulator 24 can be used when forging a ball, but when used for forging a disc-shaped part, the present handling device is installed in front of it and the connecting portion 10 is gripped with tongs 25. Just do it like this. If the manipulator 24 is used in this manner, there is no need to separately provide a drive device for the carrier frame 1 and a rotation drive device for the tong head 4 in this handling device, and the structure can be made simple and inexpensive. Furthermore, in the above case, it would be convenient if the electrical wiring to the handling device was routed from the manipulator 24 through a removable outlet, so that when the handling device was removed, the electrical wiring could be removed by disconnecting the outlet. be.

By using this handling device in this way, horizontally opposed forging machines, which have traditionally been used exclusively for forging simple square and round bars, can be made to flexibly handle a wide variety of forged parts. becomes. Of course, if the manipulator 24 mainly used for rut forging used for such purposes is not provided, the handling device itself may be equipped with a drive device for the carrier frame 1 and a rotation drive device for the tongs head 4. is a matter of course. Incidentally, in the above embodiments, the case where the present handling device is used in a horizontally opposed forging machine has been described, but the present handling device can also be used in a conventional vertical forging machine. In that case, since only the upper tool is movable, it is necessary to adjust the position of the workpiece 7 in the vertical direction, but it is necessary to install a lifting device using a hydraulic cylinder or the like at the part where the bearing 2 is attached to the carrier frame 1. By providing a guide (none of which is shown), the workpiece 7
The vertical position of can be adjusted. In the above embodiment, the roller for rotating the workpiece was brought into pressure contact with the edge of the workpiece, but it may be brought into contact with the disk portion of the workpiece, and other changes may be made without departing from the gist of the present invention. As mentioned above, according to the present invention, (i) the workpiece can be gripped from both ends in the axial direction and rotated around the center of the ball; , it is possible to forge a disk or a disk with a shaft by diametrical adjustment, edge beating, etc., and it is possible to forge them in a shorter time and with higher precision than conventional free forging.

Furthermore, when gripping a workpiece, the tongue lever opens and closes symmetrically via the parallelogram link mechanism, making it easy to handle and position the workpiece. (ii) The horizontally opposed forging machine, which has traditionally been used exclusively for forging square and round bars, can be flexibly adapted to forge a wide variety of target forged parts, and can also be used for forging using a subordinate free forging press. Productivity can be significantly improved by comparison.

Gii) Can also be used with conventional vertical free forging presses,
Disks with high roundness and disks with shafts can be forged efficiently and accurately.

Demonstrates excellent effects such as

[Brief explanation of the drawing]

Figure 1 is a diagram showing the forging method in a conventional vertical forging machine.
Fig. 2 is a side view of the handling device of the present invention, Fig. 3 is a plan view of Fig. 2, Fig. 4 is an explanatory diagram of end punching of a workpiece carried in by a manipulator, and Fig. 5 is a handling device of the present invention. Fig. 6 is a plan view showing a state in which the workpiece is being edged;
FIG. 7 is a plan view showing a state in which a workpiece is being diameter-diagnosed, and FIG. 8 is a side view showing a state in which the handling device of the present invention is connected to a manibrator. 1...Carrier frame, 2...Bearing, 3...Shaft, 4...Tong head, 5...Tong lever, 6...Opening/closing lever, 7...Workpiece, 8
...Center, 11...Roller, 12...
... Back lever, 16... Drive Hishitaka. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1. A tongue head rotatably attached to a movable carrier, a tongue lever provided to the tongue head so that it can be opened and closed via a parallelogram link mechanism, and a workpiece gripped at the tip of the tongue lever from both ends in the axial direction of the workpiece. A workpiece gripping tool is rotatably attached to the workpiece gripping tool, and a workpiece rotation mechanism that rotates the workpiece around the workpiece axis by bringing a rotating roller into contact with the workpiece gripped by the workpiece gripping tool. Features: Work handling equipment for forging disc-shaped parts.