When traditional hydraulic automatic lathes were helpless due to their complex processing technology and limited quantity of products, people introduced foreign CNC lathes to solve this problem. If a cylinder is used as the guide rail feed thrust in a metal cutting machine tool, the compressibility of the gas will cause the guide rail speed to be unstable, resulting in an unsatisfactory surface roughness of the cutting surface. Therefore, in the traditional field of automatic lathes, camshafts or oil cylinders are commonly used as guide rail feed thrust. But if a specially designed speed stabilizing device is added to the guide rail mechanism using cylinders as thrust, the problem of unstable speed can be easily solved.

Hydraulic automatic lathe is a new type of automated machine tool developed to meet these requirements. Automatic hydraulic lathe is an important component of mechatronics integration, and is a highly integrated typical product that integrates precision mechanical technology, computer technology, automatic control technology, microelectronics technology, and servo drive technology. It reflects the mainstream progress of machine tools in the world and is an important indicator for measuring the level of mechanical manufacturing work. Automatic hydraulic lathes play an important foundational role in advanced manufacturing technology, and are expensive precision equipment. NSK bearings have distinct characteristics that differ from ordinary machine tools.

Quality requirements for assembly of hydraulic automatic lathes:

1. The sliding and operating parts on hydraulic automatic lathes require flexible, lightweight, smooth, and unobstructed operation.

2. The contact spots and side clearances of transmission components such as gears, racks, and worm gear pairs that can be adjusted after assembly should comply with standard regulations.

3. The gears assembled on the splines should not swing, and the spline shaft that is dynamically matched with the gears, clutches, and other mating parts should have unobstructed sliding movement on the shaft without any jamming phenomenon.

4. On the transmission shaft, there must be no looseness or movement of the fixed fitting parts; The sliding fitting parts should be able to move freely on the shaft without any biting or blocking phenomenon.

5. The sliding and moving guide rail surface shall be inspected by coloring method. The reverse clearance distance of the hand wheel and handle with scales shall not exceed the specified limit. When the hydraulic automatic lathe is running, the measurement of the noise of the automatic lathe should be carried out under the condition of idle running.