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1. Speed of main spindle can be adjusted steplessly.

2. Main spindle device, composite processing machine with the main spindle device, and method of assembling main spindle device.

3. The main spindle that turns dreamtime revolves around the aurora.

4. BP neural networks model of the main spindle system of the grinder is built and the structure model updating and optimization calculation are carried through based on the method.

5. High - speed router: 4.5 KW main spindle, vacuum absorption, DSP control, fit table for Large - scale processing.

6. And using its recognition result, carries on the main spindle dynamic analysis, will instruct the later main spindle components using the dynamic analysis result the main spindle design.

7. The main spindle system is a key part on the machine tools. The quality of thermal behavior influences the machining accuracy of machine tools directly.

8. The main spindle is driven by a variable frequency controlled AC motor.

9. The main spindle of the dividing head drives the workpiece by means of a 3-jaw universal chuck or a dog and live centre similar to a lathe.

10. This paper studies concept, calculation and gauge design concerned with coaxality of main spindle hole and camshaft hole and points out some common errors.

11. To raise machining efficiency and make NC machine working in a perfect state, manipulator would constantly adjust feed rate and main spindle speed trim knobs in the operate panel.

12. The drill will not be dropped out when the main spindle of machine is instantly stopped.

13. This paper analyzes the offcenter error of installing reference ball as testing lathe main spindle rotation errors in Ningxia Institute of Technology and puts forward the way of eliminating errors.

14. Through alter the method on scraping contact surface between main spindle head and lathe frame,[Sentence dictionary] we may increase contact point and improve the contact rigidity.

15. A new model of vibration mechanics concerning the vibration of the workplace and the main spindle caused by the grinding wheel unbalance is proposed.

16. High machining precision and low surface roughness may improve the main spindle rotating precision and decrease the wear of the main spindle.

17. The calculated results of rolling bearing stiffness indicate that larger preloading and constant pressure preloading for the rolling bearings of the spindle can improve the stiffness of main spindle.

18. Average type beam drill is composed of base , inside and outside column , rocker arm , main spindle box and job.

19. This article analyses the influence of the support of oil film vibration damping of the main spindle on cutting degree of roughness through cutting test.

20. A new mechanical model of the vibration between the workpiece and the main spindle caused by the grinding wheel unbalance is proposed in this paper.

21. In the mechanical structure of the spindle box is the main drive designed to be given under the conditions of the main spindle speed drive system design.