With the rapid development of science and technology, the changing market demand and the increasingly fierce competition for commodities, so that the mechanical product replacement cycle is shorter and shorter, multi-species, small-batch production ratio is higher and higher. In order to adapt to the needs of this situation, a variety of new CNC lathes.
　　The same machine tool, why production efficiency is many times different? The conclusion is that the fixture chosen for CNC Lathe is not suitable, which greatly reduces the production efficiency of CNC lathe. How to improve the utilization rate of NC lathe? Through technical analysis, the use of fixture has a great relationship. 

      According to incomplete statistics, domestic enterprises CNC lathe fixture selection unreasonable proportion of more than 50% . By the end of 2010, there were nearly one million NC lathes in China, that is to say, more than 500,000 NC lathes were not working properly because of improper fixture selection or application From another point of view, in the selection and application of CNC lathes can be done, because it contains considerable potential economic benefits. Of the project

       In our machine tool industry, the size of the machine tool is different, the number of production is different, for small and medium-sized machine tools are generally mass production: large and heavy machine tools for single or small batch production. 

The working conditions of general machine tools, such as bearing, impact and lubrication conditions, are obviously superior to the automobile, tractor and heavy machinery. 

The parts are the support of the whole machine tool, its precision maintenance requirements are very high, so the focus of Dongguan CNC lathe to tell you about the heat treatment characteristics of machine tool parts, it can be summed up as follows: 

(1) the steel used is generally non-alloy (carbon) structural steel and alloy structural steel. A few parts, such as steel-inlaid guide rail, hardened lead screw, such as the use of low-alloy tool steel and bearing steel. 

(2) there are many parts with local hardening and surface hardening. Many parts of machine tool only require high wear resistance on local surface, most parts are hardened by local surface hardening (such as induction heating, laser heating, ultrasonic frequency heating, etc.) . 

(3) salt-bath furnace is used for oxidation-free heating of most parts of periodic working furnace. Kerosene is injected into a vacuum furnace or gas carburizing furnace to create a protective atmosphere.