Hub bolt hole paint removing device and method thereof

Abstract

The invention relates to the technical field of automobile part machining, and discloses a hub bolt hole paint removing device and a method thereof. The device comprises a lower rack, a roller conveying line and an upper rack; wherein a height measurement grating, a hub centering mechanism, a blocking mechanism and a dust collection mechanism are arranged above the lower rack; and a positioning mechanism used for adjusting the horizontal height of a laser galvanometer is arranged on the lower rack. The method comprises the following steps of S1, acquiring a target image I; S2, acquiring a contour image I; S3, establishing a coordinate system on the contour image I; S4, calculating the radius of a hub; S5, acquiring a target image II; S6, acquiring a contour image II; S7, establishing a coordinate system on the contour image II; S8, calculating a circle center coordinate of a bolt hole; and S9, carrying out directional paint removal. According to the hub bolt hole paint removing deviceand the method thereof provided by the invention, wheel type recognition of the hub and precise positioning of the position of the bolt hole are achieved through visual recognition, and paint at the position of the bolt hole of the hub is removed through laser, so that the automation level and the production efficiency of a production line are improved.

Description

technical field [0001] The invention relates to the technical field of auto parts processing, in particular to a wheel hub bolt hole paint removal device and a method thereof. Background technique [0002] The wheel hub is an important load-bearing and appearance part of the car. The surface of the wheel hub needs to be painted and colored to ensure the aesthetics and corrosion resistance of the wheel hub. In the process of assembling the wheel hub of the car, the wheel hub is fixed to the body by high-strength bolts; the high-strength bolts rely on the friction force of the friction surface, and the friction force depends on the pressure and friction coefficient. Under the same pressure, the friction between the bolt and the aluminum alloy The coefficient is far greater than the friction coefficient between the bolt and the paint coating. In order to ensure that the wheel hub is firmly fixed on the car body during long-term high-speed operation, the mounting surface of the ...

AI Technical Summary

Problems solved by technology

[0003] The traditional method of removing paint from hub bolt holes is through plug protection. This method requires manual placement of plugs to the bolt holes, and manual removal of plugs after spraying. This method wastes a lot of labor, and the plugs are not placed properly. It is also easy to cause paint to seep into the bolt holes. The paint that seeps into the bolt holes is removed by chemical solvents. The treated wastewater and solvents will cause environmental pollution.

In addition, the protective plug needs to be replaced regularly, otherwise the plug will be deformed due to the continuous deposition of paint and high temperature baking, and the protective effect will not be achieved.

Images