Grinding-bed static head rack capable of realizing accurate ultra micro-finishing

A technology of ultra-precision and static pressure head, which is applied to the parts of grinding machine tools, ultra-finishing machines, grinding/polishing equipment, etc., and can solve the problems affecting the improvement of the surface quality of the grinding wheel grinding workpiece and the surface contour of the grinding wheel grinding workpiece. Reduced precision, easy changes in bearing clearances, etc., to achieve the effect of reducing equipment materials, saving equipment production costs, and reducing equipment maintenance costs

Inactive Publication Date: 2009-04-29
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the objective existence of wear between the rolling elements and the inner and outer rings of rolling bearings, the bearing clearance is prone to change after long-term operation. Therefore, when the headstock spindle supported by rolling bearings drives the workpiece to rotate, the rotation accuracy of the workpiece will be reduced, resulting in The surface profile accuracy of the grinding wheel grinding workpiece decreases and the surface roughness increases
Thin oil-lubricated copper tile sliding bearing support structure, because the supply and return of thin oil are completely open, it is difficult to form a stable high-rigi

Method used

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  • Grinding-bed static head rack capable of realizing accurate ultra micro-finishing
  • Grinding-bed static head rack capable of realizing accurate ultra micro-finishing
  • Grinding-bed static head rack capable of realizing accurate ultra micro-finishing

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Embodiment 1

[0037] Embodiment 1: as shown in Figure 1, image 3 As shown, the static pressure head frame of the grinder that can realize precise ultra-precision grinding of the present invention includes a sleeve 1, a head frame spindle 2, a support box 10, a head frame motor 3 and a head frame top 4, and the head frame top 4 is installed Set at the front end of the headstock main shaft 2, the headstock motor 3 is directly connected to the rear end of the headstock main shaft 2 through the coupling 9, so as to reduce the space occupied by the equipment and reduce the cost of the equipment. The rear end of the sleeve 1 is equipped with a rear end cover 7, the front end of the sleeve 1 is equipped with a front end cover 8, and the sleeve 1 is provided with a forward liquid channel 11, a front liquid return channel 12, a rear liquid inlet channel 13, and a rear liquid return channel. The channel 14, the liquid supply channel 15 and the sleeve liquid return hole 17 located in the middle of the...

Embodiment 2

[0046] Embodiment 2: As shown in FIG. 2, the static pressure head frame of the grinder that can realize precise ultra-precision grinding of the present invention includes a sleeve 1, a head frame spindle 2, a support box 10, a head frame motor 3 and a head frame top 4. The headstock top 4 is installed at the front end of the headstock main shaft 2, the rear end of the headstock main shaft 2 is sheathed in the rotor 31 of the headstock motor 3, and the end of the headstock motor 3 close to the sleeve 1 is provided with a flange 33, and the headstock The stator shell 32 of the motor 3 is fixed on the sleeve 1 through the flange 33, and the function of the motor and the function of the headstock spindle 2 are structurally integrated, eliminating the need for complex intermediate transmission links, and having a compact structure and light weight. , small inertia, small vibration, low noise, fast response and so on. The front end of the sleeve 1 is provided with a front end cover ...

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PUM

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Abstract

The invention relates to a static head frame of a grinding machine, which can realize precise and super-precise grinding, comprising a sleeve, a head frame spindle, a support box body, a head frame tip which is arranged on the front end of the head frame spindle and a head frame motor which is connected with the back end of the head frame spindle; wherein, the sleeve is positioned on the support box body; a front end cover is arranged at the front end of the sleeve; the front end and the back end of the head frame spindle are respectively supported on the sleeve through a front liquid hydrostatic bearing and a back liquid hydrostatic bearing; liquid medium is filled between the head frame spindle and both the front liquid hydrostatic bearing and the back liquid hydrostatic bearing; a thrust shaft shoulder is arranged on the head frame spindle and sleeved with a circle of gasket; the thrust shaft shoulder and the gasket are both positioned between the front liquid hydrostatic bearing and the front end cover; a front end gap exists between the front end of the thrust shaft shoulder and the front end cover and a back end gap exists between the back end of the thrust shaft shoulder and the front liquid hydrostatic bearing; and liquid medium is filled in the front end gap and the back end gap to form a liquid hydrostatic thrust bearing. The head frame has the advantages of good rigidity, high rotation accuracy, good vibration reducing performance and long precision life.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a grinder static pressure head frame capable of realizing precise ultra-precision grinding. Background technique [0002] Precision and ultra-precision grinding is a key technology in the field of advanced mechanical manufacturing technology. With the increasingly high requirements for parts processing accuracy and processing efficiency, many developed countries in the world have included the research and development of precision and ultra-precision grinding equipment in the technical and industrial development directions supported by the state. Compared with ordinary processing equipment, precision and ultra-precision grinding equipment have higher requirements on the rigidity of the bed, the rigidity and rotation accuracy of the grinding wheel spindle, and the rigidity and rotation accuracy of the workpiece installation. [0003] At present, most of the headstock spindl...

Claims

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Application Information

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IPC IPC(8): B24B41/04B24B35/00
Inventor 熊万里邓新春阳雪兵纪宗辉袁巨龙
Owner HUNAN UNIV
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