Workpiece shape correcting method and workpiece shape correcting device

Abstract

The invention discloses a workpiece shape correcting method and a workpiece shape correcting device. The workpiece shape correcting method comprises the steps that a to-be-corrected workpiece is measured, the difference between the to-be-corrected workpiece and a reference workpiece is calculated according to data obtained through measurement, the machining allowance of the to-be-corrected workpiece is obtained, and the machining allowance comprises a deformation area of the to-be-corrected workpiece and the corresponding deformation amount; according to the machining allowance of the to-be-shaped workpiece, ultrasonic shot blasting guns with different frequencies are adopted for conducting shape correction treatment on the to-be-shaped workpiece; and the steps are repeated until the corrected workpiece meets the correction standard. According to the device, a to-be-machined metal plate and a to-be-shaped hub can be subjected to shape correction treatment, the hub shape correction precision is improved, meanwhile, damage to the hub is avoided, and the application range is wide.

Description

technical field [0001] The invention belongs to the technical field of hub manufacturing, and in particular relates to a workpiece shape correction method and a workpiece shape correction device. Background technique [0002] The wheel hub is the metal part that supports the tire inside the tire. At present, the wheels on the market are mainly divided into two categories: steel wheels and alloy wheels. Small, strong heat dissipation and other advantages, more and more widely used. At present, most aluminum alloy wheels are cast with A356 material, but the mechanical properties of this material are relatively low. In order to improve the mechanical properties of the material, aluminum alloy wheels are usually heat-treated during the manufacturing process of the wheels. The yield strength will eventually cause the heat treatment deformation of the hub, which will cause roundness deformation (radial deformation) in the rim area, which will bring troubles to the subsequent mac...

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Problems solved by technology

[0004] However, in the wheel hub shape correction scheme in the prior art, on the one hand, the deformation area and deformation amount of the wheel hub cannot be accurately obtained before the wheel hub shape adjustment, that is, the deformation area and deformation amount of the wheel hub are usually not measured, and It is to directly correct the shape of the hub, which makes the hub shape inaccurate. On the other hand, in the prior art, the hub shape is only calibrated for the axial deformation of the hub, and cannot be calibrated for the radial deformation of the hub. , the scope of application is narrow, and the contact mechanical pressure is used to correct the shape, which is easy to cause damage to the hub. For example, in the above-mentioned CN210547606U, the pressure is forced to be applied along the axial direction of the hub by tapered rollers. Three tapered rollers, the range of activity of the tapered rollers determines the size of the shaping hub, and the cone angle of the tapered rollers limits the type of the shaping hub, so that the device can only be used for shaping the specific hub

[0005] In addition, in the wheel hub shape correction scheme in the prior art, no shape correction treatment is performed on the metal processing parts (that is, the metal plate parts before the wheel hub is formed), which affects the forming quality of the wheel hub, and increases the difficulty and cost of the subsequent wheel hub shape correction.

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