Cam grinding control system and method based on PC and infrared thermal imaging system

Abstract

The invention discloses a cam grinding control system and a method on the basis of a PC and an infrared thermal imager. The system comprises a cam to be processed, a grinding wheel bracket, a PC machine, a control unit, a servo motor, a ballscrew, a linear motor, a mainshaft unit and a grinding wheel; the infrared thermal imager is fixedly connected with the grinding wheel bracket by a connecting rod; the camera of the infrared thermal imager aims at the processing surface of the grinding wheel; the output port of the infrared thermal imager is connected with the PC machine by a 1394 interface; the method uses the temperature field data at the processed area of the grinding wheel measured by the infrared thermal imager as the input variable, and dynamically tracks and adjusts the rotation speed of the grinding wheel mainshaft unit and the feeding quantity of the grinding wheel by a fuzzy control algorithm carried out by the PC machine, thus reasonably applying the grinding process with ensured quality and achieving the control in real time is carried out while the processing efficiency is ensured.

Description

Technical field [0001] The invention relates to a cam grinding control system and method in the field of electromechanical engineering, in particular to a cam grinding control system and method based on a PC and an infrared thermal imager. Background technique [0002] The grinding process has a very high energy input per unit volume of material removed. Almost all of this energy is converted into heat and concentrated in the grinding zone, which leads to an increase in the temperature of the grinding zone. The increase in the grinding temperature has an impact on the surface quality of the cam. Have a great impact. The cam is one of the main components of the internal combustion engine, and its machining quality seriously affects the engine's dynamic performance. When grinding the cam with the numerical control method, the temperature of the grinding zone is the main factor affecting the surface quality of the cam. At present, empirical adjustment is usually used, which is often...

AI Technical Summary

Problems solved by technology

At present, empirical adjustment is usually used, and it is often difficult to obtain a compromise in terms of speed and effect; or the method of finite element calculation and computer simulation is used to obtain the processing temperature field, and then the result is reflected in the processing process.

For an asymmetric structure such as a cam, the machining process of the grinding wheel is more complicated, and it is difficult to achieve the predetermined requirements through this open-loop control

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