Method for improving punching accuracy of frame and device

Abstract

The invention discloses a method for improving the punching accuracy of a frame. The method comprises the steps of 1), producing a frame body; 2), fixedly connecting punched piece blanks to the frame body to form a frame to be punched; 3), performing uniform punching on the punched piece blanks on the frame to be punched. The invention further discloses a device for achieving the method for improving the punching accuracy of the frame. The device comprises a platform, and a plurality of stationery fixtures capable of fixing the frame to be punched and a plurality of punching mechanisms for punching the punched piece blanks are arranged on the platform. According to the punching method, the traditional technology in which punching is performed and welding is performed later is overturned and changed into a technology in which the frame to be punched is produced and uniform punching is performed then, the relative position accuracy of each hole position on the finished frame is guaranteed, the follow-up assembling work of a whole vehicle is facilitated, and the quality of the whole vehicle after machining is ensured. The punching device is designed for achieving the method. The method and the device are applicable to the punching process for automobile frames.

Description

technical field [0001] The invention relates to a punching process for an automobile frame and a corresponding punching device. Background technique [0002] The frame of the car is bulky. In addition to the main body of the frame, there are many smaller parts that are welded together with the main body of the frame. Most of these small parts need to be punched. The current frame punching process is as follows: the main body of the frame is manufactured, and the punching blank is prepared; the punching blank is punched to make it a finished punching piece; then the punching piece is finished It is welded with the main body of the frame to form a finished frame with holes. Correspondingly, on the frame production line, there is a special device for punching holes on the frame body. The punching device has a large platform on which multiple sets of fixing fixtures are arranged, and they are separately arranged on the platform; when the main body of the vehicle frame is trans...

AI Technical Summary

Problems solved by technology

[0003] However, the drawbacks of this technique are obvious

Although the holes on the punched blanks are punched according to the drawings, when the components are welded and assembled on the production line, it is easy to have precision errors such as inaccurate hole positions and uneven hole axes.

The problem of low punching accuracy of the frame needs to be solved urgently by engineers

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