In this paper the authors disscussed the correlation of the weighted microhard-ness of stone, the discrete value and the workable efficiency through the drilling, grinding andcutting test on 10 kinds of stone, and established the relative complex regression equation, andthen the classification of the stone machinabitity was made on the equation.

Development and key technologies for high efficiency abrasive machining;

NC machine tool's working efficiency affected by sorts of factors in modern manufacturing engineering,the Vibration Stimulated by itself is a key element.

How to improve the working efficiency of NC Lathe is the main problem of machine manufacturing.

The working principle and workflow of LOM rapid prototyping manufacture is introduced, the influencing factors of working efficiency of rapid prototyping manufacture are summarized.

Influence of machining parameters on processing efficiency in WEDM;

On this basis, cueingprocedure was introduced to explore further the deficits of students with learningdifficulties in WM capacity were due to storage ability, processing efficiency or bothof them together.

Under same machining conditions(machine,tool,workpiece material,etc),the CNC machining process was optimized and adjusted by the PowerMILL software to improve the processing efficiency.

Through analysis of these curves,it was demonstrated that only specific speed can lead to the maximum machining efficiency,which would go dow.

This paper describes an investigation into the optimization of the EDM micro and small hole machining efficiency based on experimental design which considers both servo perameters and electrical parameters.

In manufacturing the drum groove of the drilling winch,there currently exist such problems as low machining efficiency,low accuracy and high cost.