JPH0140632Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a double-headed rotating clamp device, and is suitable for symmetrical welding and opening during preparation work in which a box shape such as a side beam used in a vehicle is divided into two parts. It is suitable for tip cutting.

[Background of the idea]

Items with a box-shaped cross section, such as the side beams of a vehicle, are manufactured by making the shapes symmetrical and joining them by welding. When cutting, the clamping method is usually to use a vise or something similar.

According to this method, it is manual work, and when cutting a symmetrical part, it is necessary to change the clamps, which has the disadvantage that it takes a lot of time to set up.

[Purpose of invention]

The object of the present invention is to mechanize the clamping operation when, for example, continuous cutting of a symmetrical welding groove is performed using an automatic machine or the like.

[Summary of the idea]

This invention uses a C-shaped frame when cutting a welding groove on something with a box-shaped cross section, such as a side beam for a vehicle, and performs the cutting work on the unclamping side, and when working on the symmetrical part, the unclamping side is rotated. This is done by rotating it to the clamp side using an actuator. This allows the frame to be easily worked on without getting in the way. In this way, a clamping actuator is provided at each apex of the C-shaped frame, and the central part of the C-shaped frame is supported on the base via the main shaft, and the pivoting actuator supports the rotation of the C-shaped frame on the base. The present invention is characterized in that an actuator is provided, and the holder provided on the upper surface of the base is configured to be tightened by one of the above-mentioned clamping actuators via the workpiece and the presser foot.

[Example of idea]

Hereinafter, the present invention will be explained in detail with reference to an illustrated embodiment. FIG. 1 is a front view, and FIG. 2 is a side view.

As shown in the figure, the present invention is composed of a base 1, a C-shaped frame 2, clamp actuators 3, 3', a main shaft 4, a swing actuator 5, a receiver 6, a presser foot 7, and a width positioner 9. A workpiece such as a side beam, 10 is a cutting torch. Clamping actuators 3 and 3' are attached to the apexes of the C-shaped frame 2, respectively, and the C-shaped frame 2 is supported on the base 1 by a main shaft 4 and rotated by a turning actuator 5. A receiver 6 for receiving the lower side of a workpiece 8 is provided on the upper surface of the base 1. The workpiece 8 is lightly fixed by width positioning 9 to the extent that the left and right side surfaces thereof do not move, and a presser foot 7 is placed on the upper side through the workpiece 8. The surface area of the presser foot 7 in contact with the workpiece 8 determines the presser pressure for fixing the workpiece 8. When a drive source (for example, hydraulic pressure) is applied to the turning actuator 5 in the state shown by the two-dot chain line, the C-shaped frame 2 swings via the main shaft 4 from the two-dot chain line to the position shown by the solid line above. When a driving source (for example, hydraulic pressure) is applied to the clamping actuator 3 in this state, the workpiece 8 is easily clamped to the receiver 6 fixed to the base 1 via the presser foot 7. Thereafter, the workpiece 8 is cut as shown in the figure using an automatic machine (not shown) equipped with a cutting torch 10.

When the work on this side is completed, the C-shaped frame 2 is rotated by applying a driving source (for example, hydraulic pressure) to the swinging actuator 5, and the clamping actuator 3' on the opposite side is positioned above the workpiece 8. and clamp as described above. Thereby, the cutting operation on the opposite side of the workpiece 8 can be performed.

In this way, the clamping work is mechanized by rotating the C-shaped frame 2 and clamping it alternately.
Predetermined work can be done on the unclamp side.

In addition, if a plurality of this device is used, even if the C-shaped frame 2 is placed on the cutting torch 10 side and clamped, the clamp can be changed just before the cutting torch 10 passes, and this makes it possible to change the position where cutting distortion occurs. It is also possible to predict and constrain its position.

[Effect of idea]

According to the present invention, the clamping operation can be easily automated, and the machining operation of bilaterally symmetrical parts can be performed without any problems.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the device of the present invention;
FIG. 2 is a side view thereof. DESCRIPTION OF SYMBOLS 1... Base, 2... C-type frame, 3... Clamp actuator, 4... Main shaft, 5... Turning actuator, 6... Receiver, 7... Presser foot, 8
...Workpiece, 9... Width positioning, 10... Cutting torch.

Claims (1)

[Scope of utility model registration request] A clamping actuator is provided at each apex of the C-shaped frame, a center portion of the C-shaped frame is supported on a base via a main shaft, and a swing actuator is provided on the base to support rotation of the C-shaped frame, A double-headed rotating clamp device, characterized in that the receiver provided on the upper surface of the base is configured to be tightened by any of the clamp actuators described above via the workpiece and the presser foot.