Hardware expounding of rebuilding common lathe to economical CNC lathe;

Machining abnormal shape roller with common lathe;

Takes CA6140 type common lathe as an example,has explained the NC transformation method from machinery and electric two respects in detail.

The paper analyese reason of ordinary lathe faults in operation and gives out the elimination methods.

It is not only economical but also practical way in equipment refitting that ordinary lathe is refited into numberical controlling.

Consider the national conditions of our country;the economic digital control lathe is a very important step to develop from ordinary lathe to digital lathe.

Alteration of control system of plain lathe based on PLC;

The key of processing tenuous hole by plain lathe is the design of clamping apparatus.

It introduces the reformation of multidrilling machine from plain lathe.

Numerical Control Reform Technical of Universal Lathe is introduced in this article it is discussed in the paper that reform theory of universal lathe reform of main transmission system, feed transmission system, selection and installa tion of automatic round sword shelf, as well as matters needing attention of reform in detail.

Taking example for CA6140 engine lathe,the scheme of modifying the engine lathe into the economical numerically controlled lathe is introduced.

This paper analyzes on the causes of the common obstacles in the engine lathe,sums up the main methods for the obstacles avoidance and maintenance,which possess certain reference value on the usage,maintenance and inspection of the engine lathe and relevant lathes.

This paper discusses the method of NC refit of the engine lathe,with the refit method of mechanical part,the composition and working principle of the NC system put on stress.