A workpiece shape correction method and workpiece shape correction device

Abstract

The invention discloses a workpiece shape correction method and a workpiece shape correction device. The method for correcting the shape of the workpiece includes: measuring the workpiece to be corrected, calculating the difference between the workpiece to be corrected and the reference workpiece according to the data obtained by the measurement, and obtaining the machining allowance of the workpiece to be corrected. The machining allowance includes the workpiece to be corrected The deformation area and the corresponding deformation amount; according to the machining allowance of the workpiece to be corrected, ultrasonic shot blasting guns of different frequencies are used to correct the shape of the workpiece to be corrected; repeat the above steps until the workpiece to be corrected meets the calibration standard . The invention can carry out shape correction treatment for the metal plate to be processed and the wheel hub to be shaped, improves the shape correction accuracy of the wheel hub and avoids damage to the wheel hub, and has a wide application range.

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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