A large diameter and large pitch screw surface induction heating device and surface heating method

A heating device and surface induction technology, which is applied in the direction of quenching device, heat treatment furnace, heat treatment equipment, etc., can solve the problems of inaccessibility, large temperature difference in the direction of the tooth profile, cracks on the workpiece surface, etc., and achieve the effect of improving the heating quality
CN113832306BActive Publication Date: 2022-07-19常州市斯比泰机械制造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
常州市斯比泰机械制造有限公司
Publication Date
2022-07-19

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Abstract

The invention provides a large diameter and large pitch screw surface induction heating device and a surface heating method. The device includes a base transmission device, a mobile sliding table device, a telescopic induction coil device, a thermometer, a CCD camera and a helical coil. The movement of the screw in two directions and matching the corresponding speed, let the diamond coil move along the tooth profile of the screw to be heated, scan the surface of the tooth profile of the screw to be heated, and then pass the helical coil with high-frequency current to heat the surface of the screw to be heated. The tooth top surface of the screw is heated so as to cover the entire surface of the screw to be heated. At the same time, the temperature is measured in real time during the heating process through the thermometer, and compared with the target temperature in real time, and the heating parameters and motor speed are adjusted in real time. Control the heating temperature difference so that the entire surface of the screw to be heated is completely and uniformly heated, forming a temperature gradient of the entire tooth profile, improving the heating quality, and laying a good foundation for the next step of quenching.
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Description

technical field

[0001] The invention relates to the technical field of screw production, in particular, to a surface induction heating device and a surface heating method for a large-diameter and large-pitch screw. Background technique

[0002] The screw is a functional component that converts rotary motion and linear motion. It has the characteristics of smooth transmission, precise positioning and high transmission efficiency. It is widely used in various industrial equipment, precision instruments and precision CNC machine tools. Since the lead screw is often subjected to composite loads such as bending, torsion, impact, etc., it is required to have good comprehensive mechanical properties and high dimensional stability, and the relevant working parts have high hardness, high strength and sufficient wear resistance. . At present, induction quenching heat treatment is generally used to meet the requirements of the internal performance of the screw, but the coarse martensi...

Claims

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