Application Reseach On The Transform Of Cylinder Honing Machine Based On MCU

Cylinder honing processing is an important part of the engine cylinder repair process. Along with the increase of the automobile inventory, also the engine service quantity increases sharply. Honing machine is necessary to the automobile service enterprise of the two levels or above. At present, most service enterprises use small simple honing machines which are controlled manually. When this kind of machine processes different model cylinders, it takes long time to adjust the technological parameter and it is difficult to be controlled accurately. This will result in low production efficiency and bad service precision. The specification to process personnel is high.Based on the analysis of the honing process, several key questions which influence processing efficiency and precision are found and a plan for parameter choice is proposed in order to reduce the processing time and the work intensity, and to improve the processing precision. This article has conducted researches on 3M9814 which is massively used in recent years and made by Shanghai Aviation Plant, including:1. According to the characteristics of production process, the paper found the key parameters which should be controlled in honing and explored the method to control the speed of honing head, stroke and stretching size of honing stone in order to increase the processing speed and to make vein intersection angle and dimension accurate.2. A kind of cyclic control system is designed, which uses the proportion direction valve controlled by microcomputer to determine the honing head reciprocation speed and control stroke and the commutation spot assisting with a photo electricity encoder. The structure of this system is simple and the location is rapid and accurate.3. It designed the hardware of the microcomputer control system through the expansion of the periphery chips and the design of auxiliary circuit to make the system can control the traveling location and honing stroke and short stroke numerically.4. Software development is done to the control system and data sheet for normal cylinder is established based on the machine models which are commonly used, so it is convenient to the customers. According to the process needs, we can increase the process machine model data to meet the needs of the honing process of the new machine model.5. The related experiments are carried on and the design feasibility and the deficiency are confirmed.