Hexagonal hole punching device

Abstract

The invention relates to a hexagonal hole punching device. The hexagonal hole punching device comprises a support. The support comprises a working platform which is used for bearing a part to be punched. The two sides of the working platform are respectively provided with a longitudinal supporting arm. The two supporting arms are respectively and transversely connected with a clamping part, and the two clamping parts can move along the supporting arms in the longitudinal direction and are arranged in the opposite directions. A punching head facing the part to be punched is connected between the two clamping parts. The punching head can rotate around the two clamping parts in the longitudinal direction. A cross beam is connected to the two supporting arms. The cross beam is provided with two pushing air cylinders which are connected with the two clamping parts respectively and push and press the punching head on the part to be punched. The punching head capable of rotating 180 degrees is driven by the pushing air cylinders to punch a round hole and a hexagonal hole externally tangent to the round hole in the part to be punched in sequence. According to the hexagonal hole punching device, the punching head is rotated 180 degrees successively and the two ends of the punching head are utilized to punch the round hole and the hexagonal hole along the externally tangent edge of the round hole sequentially in the punched part in twice, so that the edges of the punched hexagonal hole are free of burrs, and the punching quality is guaranteed.

Description

technical field [0001] The invention relates to a punching device, in particular to a device for punching hexagonal holes. Background technique [0002] In the field of mechanical processing, it is usually necessary to process a hexagonal hole on the workpiece. The existing method is to directly hedge the workpiece with a hexagonal punch to form a hexagonal hole on the workpiece. This processing method uses the hexagonal punch to punch the material on the workpiece that needs to be punched away from the workpiece. When the hexagonal punch acts on the workpiece, the material at the contact point between the hexagonal punch and the workpiece is squeezed by the impact force. Deformation, and then separate from the workpiece, this kind of punching is easy to produce burrs at the edge of the hexagonal hole on the workpiece, and the workpiece needs to be ground after processing, which is time-consuming and laborious, and increases the processing cost. Moreover, the existing h...

AI Technical Summary

Problems solved by technology

This processing method uses the hexagonal punch to punch the material on the workpiece that needs to be punched away from the workpiece. When the hexagonal punch acts on the workpiece, the material at the contact point between the hexagonal punch and the workpiece is squeezed by the impact force. Deformation, and then detached from the workpiece, this kind of punching is easy to produce burrs on the edge of the hexagonal hole on the workpiece, and the workpiece needs to be ground after processing, which is time-consuming and laborious, and increases the processing cost

Moreover, the existing hexagonal punch has a simple structure, only a cylinder with a regular hexagonal cross section. After a long time of use, the end is easily worn and deformed, and the hexagonal hole cannot be punched out on the workpiece well.

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