Automatic detecting method of breakage of elbow bulb of passenger vehicle exhaust system

Abstract

The invention provides an automatic detecting method of breakage of an elbow bulb of a passenger vehicle exhaust system, and is used for solving the problem that an existing bulb is broken and enters a pipe body, and the state is difficult o observe. An exhaust elbow device is arranged, and is provided with a tension oil cylinder and an elbow mechanism, wherein the tension oil cylinder is connected with a tension shaft in a driving mode; the tail end of a tension shaft is provided with an elbow bulb; the tension shaft is provided with a tension sensor which controls a detector in a connecting mode by a circuit. The automatic detecting method comprises the following steps: (1) performing straight pipe bending operation; (2) starting an automatic detecting function; (3) implementing a learning mode so as to obtain the normal running tension range value; and (4) implementing the detecting stage of the tension oscillation range, judging that the elbow bulb is broken, and controlling the detector to alarm or stop. According to the method, waste products caused by stop of bulbs are prevented; further the subsequent processing of defective products is stopped; the yield of finished products is ensured; the economic loss is reduced; the working efficiency and the utilization ratio of production resources are improved.

Description

technical field [0001] The invention belongs to the technical field of automobile parts processing, and relates to a system capable of sensing a broken ball head, in particular to an automatic detection method for the broken ball head of an elbow pipe of an exhaust system of a passenger car. Background technique [0002] In the processing of automobile exhaust pipes, the straight pipe body is processed into a curved shape as required. Therefore, it is necessary to cooperate with the drawing rod and the bending equipment, wherein the end of the drawing rod is hinged with a ball head, and the bending operation of the pipe body can be completed smoothly through the flexible rotation of the ball head, and the rotatable ball head can be realized after bending Withdrawal operation in the tube body. [0003] In the actual bending processing of automobile exhaust pipe fittings, due to frequent fatigue work or sudden increase in tension, the ball head will be broken during the withd...

AI Technical Summary

Problems solved by technology

[0003] In the actual bending processing of automobile exhaust pipe fittings, due to frequent fatigue work or sudden increase in tension, the ball head will be broken during the withdrawal operation, so that the ball head does not withdraw from the pipe body, but Usually it is difficult for the operator to find the fracture accident, which causes the pipe body with the ball head inside to be processed into a finished exhaust pipe fitting until the finished product is sent to the vehicle factory for assembly. This problem is found during the test run, causing customers to complain and claim compensation; At the same time, because no breakage was found, the subsequent pipe fittings were poorly processed, increasing the failure rate and reducing the quality of the finished product; moreover, the pipe fittings with ball heads inside were still processed, resulting in economic losses and waste of production resources.

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