Cantilever type composite spindle with high hydrostatic pressure

Abstract

The invention discloses a cantilever type composite spindle with high hydrostatic pressure. The cantilever type composite spindle with high hydrostatic pressure comprises an outer sleeve and a spindle, wherein a front end cover and a back end cover are mounted at front and back ends of the outer sleeve respectively, bearing bushes are mounted at two ends of an inner cavity of the outer sleeve, the spindle penetrates through inner cavities of the two bearing bushes, the front and back ends of the spindle penetrate out of the front end cover and the back end cover respectively, a flange for mounting a grinding wheel is mounted at the front end of the spindle, and a belt pulley is mounted at the back end; a plurality of concave oil grooves are formed in the inner walls of the bearing bushes, small holes which are communicated with the inner cavities and have the diameter of 0.5-0.7 mm are formed in the bush walls of the bearing bushes, gaps exist between the spindle and the inner walls of the bearing bushes, and an oil inlet structure for introducing hydraulic oil into the inner cavities of the bearing bushes via the small holes is formed in the wall of the outer sleeve; the cantilever type composite spindle with high hydrostatic pressure further comprises an oil return structure for leading the hydraulic oil out of the inner cavities of the bearing bushes. The cantilever type composite spindle with high hydrostatic pressure has the advantages of high rotation precision, high rigidity, long service life and the like.

Description

technical field [0001] The invention relates to a component on a machine tool, in particular to a cantilever type composite high hydrostatic spindle. Background technique [0002] The main shaft is an important part on the machine tool, which is used to install the grinding wheel and drive the grinding wheel to rotate to grind the product. Due to the limitation of its own structure, the spindle in the prior art has low rotation accuracy and rigidity. Generally, the rotation accuracy can only reach between 0.5 and 1.0 μm, and it can only process ordinary products, but cannot meet some products with high precision requirements. [0003] In order to solve the above problems, this case was born. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a cantilever type composite high hydrostatic spindle with high rotation precision, high rigidity and long service life. [0005] In order to achieve...

AI Technical Summary

Problems solved by technology

Due to the limitation of its own structure, the spindle in the prior art has low rotation accuracy and rigidity

Generally, the rotation accuracy can only reach between 0.5 and 1.0 μm, and it can only process ordinary products, but cannot meet some products with high precision requirements.

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