论文部分内容阅读
一、车削原理螺旋齿轮在放映机中起着传递动力的作用,提高螺旋齿轮的加工精度,保证机器运转正常,减少噪音和提高还音稳定性有重要作用。过去,我厂七头螺旋齿轮的加工是在C620车床上用单刀车削的。只要计算好螺旋齿轮的导程,配好挂轮即可一头一头的车削。螺旋齿轮的分头,是在床头上装上一个精确的七孔分度盘,车好一头进行一次分度。这样车削工效很低,每班只能车十多个,且精度差,齿距误差一般达0.05～0.08mm,更差的有达0.1mm以上,装在放映机上,传动起来时紧时松,机械声大,声音抖动也大。针对齿距误差大这个问题,我们采用七头刀排来加工。刀排的齿距误差一般在0.004mm以内,累积误差在0.007mm以内。计算好螺旋
First, the turning principle Helical gears in the projector plays a role in the transmission of power to improve the machining accuracy of the helical gear to ensure the normal operation of the machine, reduce noise and improve the sound stability also plays an important role. In the past, the machining of seven helical gears in our factory was done with a single tool on the C620 lathe. As long as the calculated helical gear lead, with a good hanging wheel can be turned one by one. Split helical gear is installed on the bed head a precise seven-hole indexing plate, the car a good indexing. This low turning efficiency, each class can only car more than 10, and poor accuracy, pitch error is generally 0.05 ~ 0.08mm, and even worse of 0.1mm or more, installed in the projector, the drive when the tight loose, Large mechanical sound, sound jitter is also large. For the problem of large pitch error, we use seven knife row to processing. Knife row pitch error is generally less than 0.004mm, the cumulative error of less than 0.007mm. Calculate the spiral