How to improve the motion performance of the guide rail during the processing of precision mechanical parts

Parts processing is a process of directly changing the appearance of raw materials, making them semi-finished workpieces or finished products. The processing process is more complicated.

The machining process benchmark of precision mechanical parts can be divided into different processes: casting, forging, stamping, welding, heat treatment, machining, assembly and so on. It refers to the general term for the CNC machining and machine assembly process of the entire part, while others such as cleaning, inspection, equipment maintenance, oil seals, etc. are just auxiliary processes. The turning method changes the surface properties of raw materials or semi-finished products, and the CNC machining process is the main process in the industry.

The process benchmarks for precision mechanical parts processing include positioning benchmarks, which are the positioning benchmarks used by lathes or fixtures during CNC lathe processing; measurement benchmarks, which usually refer to the needs to be observed during inspection. The standard of size or position; the assembly datum, this datum usually refers to the position standard of the components during the assembly process.

The processing of precision mechanical parts requires the production of high-quality and stable products. In order to achieve this goal, the staff must have rich machining experience and excellent technology. As we all know, machining is the same delicate work, and it must have excellent technology to do it well.

Secondly, whether the machining process of Changzhou mechanical parts is standardized also determines whether the product is of high quality. Both production and management necessarily require a set of perfect processes, which serve to make perfect products. Third, we must pay attention to communication in the production process. Whether it is node time or when there is a problem, we must strengthen communication. Communication between processing plants and equipment manufacturers is an important condition for the processing of automation equipment parts.

In the process of machining precision mechanical parts, in order to improve the motion performance of the air flotation guide, the following three methods can be used. Improve the rigidity of the guide rail in the bearing direction. The design of the guide rail structure adopts a closed guide rail, which can increase the rigidity by 2 times compared with a single side; reduce the air flotation gap; , to reduce possible oscillation factors.

In the air supply circuit, a load compensation mechanism and an automatic pressure regulating device should be designed so that the air flotation gap changes very little, and the pressure spring and roller control the air flotation gap; For high-precision measuring machines, the accuracy of air flotation should be within 0.001-0.002mm.

Secondly, it can improve the damping force during the movement of the guide rail. The more holes in the air cushion, the greater the damping force and the greater the rigidity. If the powder metallurgy porous material is used as the air cushion, large-area micropores are used instead of small ones. The hole throttles the air cushion, and the damping force will be greater. When the machining of precision mechanical parts allows, gas-liquid two-phase lubrication can be used, and the damping force is increased due to the presence of an oil film on the contact surface of the guide rail.

It can also adopt the structural form of semi-air-floating guide rail, and the coordinate machine is a combination of air-bearing guide rail and mechanical guide rail, which utilizes the advantages of the motion characteristics of the two guide rails, which not only improves the ability to resist end movement , and the gap of the air-floating guide rail is kept constant, and the damping force of the guide rail movement is increased, thereby improving the movement performance of the guide rail.

Usually precision mechanical parts are processed, and the machine tool is not suitable for working in a dirty and high temperature and humid environment. The grid power supply environment also has high requirements. The power supply voltage of the machine tool should not be worse than ±10%, and the three phases are balanced. Stablize. The power grid that is too bad must be equipped with a regulated power supply. In addition to the normal maintenance of cleanliness and lubrication, the machine tool must also be carefully maintained and its various components.