Precise control device for rolling force of lower fillet of high-strength bolt head

Abstract

The invention discloses a precise control device for rolling pressure of a lower fillet of a high-strength bolt head. The device comprises an elastic compensation system (6), a force sensor (5), a bolt rolling device (4), a main shaft system (2) and a control system (3), wherein the main shaft system (2) is fixed on the upper part of a rack (1) through a bearing. The device is characterized in that: the elastic compensation system (6) is fixed above a servo driving device (7); the bolt rolling device (4) is arranged above the elastic compensation system (6); and the control system (3) is connected with the main shaft system (2), the servo driving device (7) and the force sensor (5). The shell of the servo driving device (7) is fixed on the lower part of the rack (1). The device can precisely control the rolling force value, improve the production efficiency and ensure the product quality.

Description

Technical field [0001] The present invention relates to the field of control technology, in particular to a precise control device for the rolling pressure of the lower fillet of a high-strength bolt head. Background technique [0002] When rolling the lower fillet of high-strength bolt heads, in existing devices, manual or power-driven loading is used directly along the bolt axis. When the lower fillet of the bolt head contacts the rolling tool, continue to load to the required pressure , And maintain the pressure for a certain period of time, roll the lower fillet of the bolt head. In the above loading system, due to the large rigidity of the system, when the lower fillet of the bolt head contacts the rolling tool, it is easy to produce an impact, which affects the product processing quality; on the other hand, there is no automatic compensation adjustment function in the pressure maintaining stage. The size of the rounded corners of the bolt head changes, and the bolts themse...

AI Technical Summary

Problems solved by technology

In the above-mentioned loading system, due to the high rigidity of the system, when the rounded corner of the bolt head contacts with the rolling tool, it is easy to generate an impact, which affects the processing quality of the product; The size of the fillet of the bolt head changes, the manufacturing error of the bolt itself, the movement error of the equipment and other factors, the pressure value fluctuates greatly, which affects the rolling strengthening effect, and the consistency of product quality cannot be guaranteed during mass production. application of the technology

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