我厂是生产泰山-12型转向器的专业厂,年产量达8万台,提供20多家主机厂配套。随着小四轮拖拉机销售量的增长,用户订货逐年增加,给我厂的锻造生产造成了很大的负担。原转向器蜗轮为整体结构,经三次加热锻成。由于锻造量较大,必须留较大的加工余量,既浪费原料,又浪费工时,且锻模损坏也较严重。为解决这一矛盾,我厂对转向器蜗轮进行了改进。将原蜗轮改为装配式(图),即 Our factory is a professional manufacturer of Taishan-12 type steering gears, with an annual output of 80,000 sets, supporting more than 20 main engine factories. With the increase in the sales of small four-wheel tractors, the number of users’ orders has increased year by year, which has caused a great burden on the forging production of our factory. The original steering gear worm gear is an integral structure that is forged by three heatings. Due to the large amount of forging, it is necessary to leave a large processing allowance, which wastes raw materials and wastes man-hours, and the forging die is also damaged. In order to solve this contradiction, our factory has improved the steering gear worm gear. Change the original worm gear to assembly (figure), ie