Small CNC lathes are widely used in power equipment manufacturing industry. Energy is a national strategic issue, and China is constantly paying attention to power equipment manufacturing. After several decades of development, the manufacturing level of Chinese power equipment has been in the forefront of the world, and Chinese power equipment manufacturing enterprise can meet the development need of smart grid. The development of related power equipment manufacturing machine tools has also reached a higher level.

The precision index of small CNC lathe is roughly divided into: positioning accuracy and repeated positioning accuracy; Resolution and pulse equivalent; Index accuracy. Positioning accuracy refers to the continuous level of the actual moving position and the command position of the moving parts such as the table of a small CNC lathe, and the difference is the positioning error. The factors causing positioning errors include servo system, detection system, feed drive and guide error.

The positioning error directly affects the dimensional accuracy of machining parts. Repeated positioning accuracy refers to the difference degree of results obtained after repeated regular operations under the same operating mode and conditions. The repeated positioning accuracy is usually the normal distribution of unavoidable errors, which will affect the divergence of parts processed in batches. Is a very heavy performance metric.

The positioning accuracy of ordinary small CNC lathe is 0.018mm, and the repeated positioning accuracy is the resolution and pulse equivalent: resolution refers to the small displacement gap that can be solved. For measurement systems, resolution is a small displacement that can be measured, and for control systems, resolution is a small displacement increment that can be controlled.

Pulse equivalent refers to the displacement of the moving parts of the machine tool when the exponential control device is installed without sending an impulse signal. Indexing accuracy: Indexing accuracy refers to the difference between the practice rotation Angle and the command rotation Angle when the indexing table is indexing. The accuracy of indexing affects the Angle position of machining parts in space, and also affects the coaxiality of hole processing.