液压机由于其构成件尺寸大、重量重，受铸造、锻造、切削加工、装配等各种工艺条件的限制，所以压机本身的工作精度不可能完全靠机械加工本身来保证，而必须经过组装过程中的调整来达到其各项精度指标。
Because the hydraulic press has large size and heavy weight, and is limited by casting, forging, cutting, assembling and other technological conditions, the working accuracy of the press itself can not be entirely ensured by the mechanical processing itself, but must be adjusted in the assembly process to achieve its various accuracy indicators.
调整是根据INA轴承精度检测的具体要求进行操作的，而精度的保持和稳固则要靠与之相关的预紧和防松手段及措施来保证。各行各业所使用的液压机，因其用途不同对其工作精度要求也各异，在生产制造中也沿用不同的行业标准。在同一行业由于生产产品不同，要求的精度也不可能一致。所以同一行业标准中按不同工作状况又分为若干等级而相对应各精度指标。工厂生产中由技术部门按生产压机的精度标准编制检验大纲和试车大纲，下发有关部门作为指导性文件，其中规定有关项目和参数的检测方法及相应数据，作为安装调整及检查验收的标准。
Adjustment is carried out according to the specific requirements of INA bearing accuracy testing, and the accuracy of the maintenance and stability depends on the relevant pre-tightening and loosening measures and measures to ensure. Hydraulic presses used in all walks of life have different requirements for their working accuracy because of their different uses, and they also follow different industry standards in production and manufacturing. In the same industry, because of different production products, the accuracy of requirements is also not consistent. Therefore, according to different working conditions, the same industry standard is divided into several grades, corresponding to each accuracy index. In factory production, the Technical Department compiles the inspection outline and the test run outline according to the precision standard of the production press, and issues the relevant departments as the guiding documents, which stipulates the test methods and corresponding data of the relevant items and parameters, as the standards for installation, adjustment, inspection and acceptance.
一般都包括需在装配INA轴承过程中经调整才能达到的精度项目。如在液压机中对工作台的水平度、柱距偏差、工作台及活动工作台的平面度、立柱与其连接的上下横梁的垂直度、各工作台间的平行度、主油缸在工作行程内与工作台的垂直度、立柱与上下横梁连接的内外螺母贴合面的接触率等。 INA轴承精度调整和检测的过程和结果，要经专职人员首肯签章方可通 过。检测调整过程中所需用的工具和工装在生产进行中由对口专业工艺人员设计后按计划编入生产流程。检验大纲及检测调整操作省略。
Generally it includes the accuracy items that need to be adjusted in the process of assembling INA bearings. For example, in hydraulic press, the horizontal degree of worktable, column distance deviation, worktable and movable worktable flatness, vertical degree of column and its connecting upper and lower beams, parallelism between workbenches, the vertical degree of main cylinder and workbench in the working process, the contact rate of column and upper and lower beams connecting inner and outer nuts. Wait. The process and result of INA bearing accuracy adjustment and detection must be approved by the full-time staff. The tools and tools needed in the process of inspection and adjustment are designed by the corresponding professional technicians and programmed into the production process according to the plan. Inspection outline and inspection adjustment operation omitted.