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Precision spindle of plane grinding machine

A technology for surface grinders and spindles, which is applied to grinding machines, machine tools suitable for grinding workpiece planes, and parts of grinding machine tools. It can solve the problems of high cost, wear, and locking of dynamic and static pressure spindles, and achieve high precision. The effect of good finish and high rotation accuracy

Inactive Publication Date: 2018-01-05
上海嵩基机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use cost of the dynamic and static pressure spindle is high, the hydraulic oil needs to be cleaned in about three months, and the hydraulic oil needs to be replaced in about a year
Improper use of the shaft diameter will also wear and lock

Method used

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  • Precision spindle of plane grinding machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown, a spindle of a precision surface grinder includes a shaft core 1, a sleeve 2 and an angular contact ball bearing 10, the shaft core 1 passes through the sleeve 2, and one end of the shaft core 1 is conical , the end is provided with a front journal 9, and the other end is provided with a rear journal 8, the front journal 9 and the rear journal 8 are located in the sleeve 2; the rear journal 8 is equipped with two angular contact balls The bearing 10 is installed in DB mode, and the inner spacer 5 sleeved on the journal and the outer spacer 4 sleeved on the inner spacer 5 are arranged between the two angular contact ball bearings 10; the front journal 9 is installed Two angular contact ball bearings 10 are installed in a DB manner, and an inner spacer ring 5 sleeved on the journal and an outer spacer ring 4 sleeved on the inner spacer ring are arranged between the two angular contact ball bearings 10 .

Embodiment 2

[0022] A spindle of a precision surface grinder, comprising a shaft core 1, a sleeve 2 and an angular contact ball bearing 10, the shaft core 1 passes through the sleeve 2, one end of the shaft core 1 is tapered, and the end A front journal 9 is provided, and a rear journal 8 is provided at the other end. Both the front journal 9 and the rear journal 8 are located in the sleeve 2; two angular contact ball bearings 10 are installed on the rear journal 8, And it is installed in DB mode, between the two angular contact ball bearings 10, there is an inner spacer 5 sleeved on the journal and an outer spacer 4 sleeved on the inner spacer 5; 3 corners are installed on the front journal 9 The contact ball bearings 10 are installed in a DBD manner, and there is no spacer between the angular contact ball bearings 10 .

Embodiment 3

[0024] A spindle of a precision surface grinder, comprising a shaft core 1, a sleeve 2 and an angular contact ball bearing 10, the shaft core 1 passes through the sleeve 2, one end of the shaft core 1 is tapered, and the end A front journal 9 is provided, and a rear journal 8 is provided at the other end. Both the front journal 9 and the rear journal 8 are located in the sleeve 2; two angular contact ball bearings 10 are installed on the rear journal 8, And it is installed in DB mode, between the two angular contact ball bearings 10, an inner spacer 5 sleeved on the journal and an outer spacer 4 sleeved on the inner spacer 5 are arranged; 4 corners are installed on the front journal 9 The contact ball bearings 10 are installed in DBB mode, and there is no spacer between the angular contact ball bearings 10 .

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PUM

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Abstract

The invention provides a precision spindle of a plane grinding machine. The precision spindle comprises a shaft core, a sleeve and angle contact ball bearings, wherein the shaft core is positioned inthe sleeve; a front journal is arranged at the front end of the shaft core; a back journal is arranged at the back end of the shaft core; two angle contact ball bearings are mounted on the back journal in a DB manner; an inner space ring sleeving the back journal and an outer space ring sleeving the inner space ring are arranged between the two angle contact ball bearings; and two to four angle contact ball bearings are mounted on the front journal. According to the precision spindle, part grinding processing precision is high, the finish degree is good, utilization is convenient, maintenanceis not required in usual, the spindle is quite environmentally-friendly, and the normal service life is ten years or above.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a surface grinder, in particular to a precision surface grinder spindle. Background technique [0002] The main shaft of the surface grinder is the core component of the surface grinder. The grinding wheel installed on the main shaft is used to rotate the grinding parts to make the parts reach the required flatness and finish. [0003] Sliding bearings are used for the front and rear support of the existing main shaft, and an oil film is generated between the shaft diameter and the sliding bearings through hydraulic oil to support the rotation of the shaft core. From the working principle, it is divided into: static pressure, dynamic pressure and dynamic and static pressure spindle. The static pressure and dynamic pressure spindles using sliding bearings generally have low machining accuracy, and the shaft core and diameter are easy to wear and lock, and often need m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B41/04B24B7/00
Inventor 徐超
Owner 上海嵩基机械厂