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1.概述在液动机及轴向活塞式变量油泵等高压液压传动装置中,具有较多的由配合球面组成的旋转关节,这些配合球面的制造精度直接影响传动装置的输出力矩、压力、泄漏量、平稳性等参数。为了使液动机获得较好的性能,例如在150大气压以上的油压下只有很小的泄漏,就要求做到高精度、高光洁度,稳定可靠、简便易行、经济合理地加工出符合要求的配合球面。为了获得精密配合球面,首先要对原材料、锻造、热处理工艺、检测技术和球面预加工工艺作完善的设计和加工。在材料选用上,配合球面零件可用铝青铜QA19-4、合金钢Cr20、Or40等优质材料;为保证组织致密,钢材要经锻造和磁力探伤等检查。毛坯经粗加工后,对
1. Overview In the hydraulic and axial piston variable displacement pumps and other high-pressure hydraulic transmission device, with more by the composition of the spherical joint rotation of the spherical with these manufacturing precision directly affects the transmission output torque, pressure, leakage , Stability and other parameters. In order to get better performance of the hydraulic motor, for example, in the oil pressure above 150 atm only a small leak, it requires high precision, high finish, stable and reliable, simple and easy, affordable and reasonable processing to meet the requirements With the spherical. In order to obtain a precision spherical surface, we must first of the raw materials, forging, heat treatment technology, testing technology and spherical pre-processing technology for the perfect design and processing. In the material selection, with the spherical parts available aluminum bronze QA19-4, alloy steel Cr20, Or40 and other high-quality materials; to ensure that the organization dense, steel to be forged and magnetic testing such as inspection. After rough roughing, right