Headstock is the Key part of machine tool , Notating accuray running out , noise of headstock are the key guides , advance test method is the important guarantee to improve product quality and perform automatic test .

Force analysis on main shaft of super micro mill;

Cause analysis of and improvement to cracked main shaft of PTA screw conveyor;

The positioning design of main shaft in CKS630-1C NC lathe is discussed.

Lathe Spindle Driven by Variable Speed Switched Reluctance System and its Numerical Control Method;

Effect of spindle dynamics on system stability in super-precision machining center;

The fuzzy optimization design of lathe's main spindle;

Static and dynamic property analysis on main spindle unit of explosion protection blower;

to alter the main spindle of the large-size machine tool,which bearing is normal plain bearing has been major introduced in this paper.

Installation technology of main axis and axis bearing in tubular bulb unit for Dongjiang hydropower station;

To counter the case which main axis lost efficacy of caterpillar grinder,reliability design theory was applied to analyze it.

Finally,the motion equation and locus of the geometric axis line of the main axis under the action of unbalance are acquired.

Fuzzy fault tree analysis of the principal axis of numerical control lathe;

The bearing convenient design for the principal axis and transmission axis of Combination drilling machine;

Basic study on the number controls to turn to reform the CW6136 lather principal axis;