Light curtain measurement-based vehicle wheel hub screw hole identification method, masking method and system

Abstract

The invention discloses a light curtain measurement-based vehicle wheel hub screw hole identification method, a masking method and a system. According to the technical scheme of the invention, a light curtain sensor of a vehicle wheel hub acquires data and the acquired time-series data is processed to extract a hole region in the wheel hub. After that, circular features are screened and the coordinates of a PCD hole center are determined. The coordinates are converted into a manipulator pulse signal. Meanwhile, a software system controls a two-dimensional manipulator to drive a coating applicator to move to be right above a PCD hole through a motion controller, and then shielding and coating balls are placed one by one. In this way, the automatic control over the spraying, shielding and coating process of various types of vehicle wheel hubs can be realized. The above method is high in positioning accuracy for PCD holes, and can realize the automatically shielding effect of screw holes. Meanwhile, the labor cost is lowered, and the automation level and the intelligent degree of the production process are improved.

Description

technical field [0001] The invention belongs to the technical field of product hole detection and manipulator control, and in particular relates to an automobile hub screw hole recognition method, a covering method and a system based on light curtain measurement. Background technique [0002] With the rapid development of my country's automobile industry, as the key upstream parts of automobiles, the demand for automobile wheels is increasing day by day. The production scale of wheel enterprises is expanding rapidly. Each wheel production line requires a lot of manpower. The traditional production method relying on manpower can no longer To adapt to the requirements of modern wheel hub production, and the diversification of wheel hub models also puts forward higher requirements for the automatic production level of wheel hub manufacturers. [0003] In the wheel hub painting production line, a wheel hub needs to be painted three times. In order to prevent the paint from being ...

AI Technical Summary

Problems solved by technology

Due to the gradual diversification of wheel hub models, the labor intensity of workers is high. Although the needs of testing are met to a certain extent, due to the high speed of the wheel hub production line, the large number of hub models, and the small differences between the hubs, two problems have been brought about: 1. One is that the working environment of workers is monotonous and boring, which will cause visual fatigue and error-prone for a long time; the other is that the degree of automation of manual operation is low, the production efficiency is low, the number of screw holes and position recognition rate is low, and the placement of blocking balls is slow, which cannot meet the needs of enterprises. , which increases the production cost of the enterprise

[0005] Therefore, domestic automobile wheel hub manufacturers have not yet realized the automatic shielding of screw holes in the automotive wheel hub spraying process. The simple manual operation is time-consuming, laborious, and has low accuracy and poor reliability.

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