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Axis indexing and positioning structure

A technology of positioning structure and shaft division, which is applied in the direction of precision positioning equipment, metal processing machinery parts, metal processing equipment, etc., and can solve the problem of inaccurate positioning of machine tool shaft angle division

Active Publication Date: 2011-02-09
WUHAN HEAVY MACHINE TOOL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to design a structure that can solve the problem of inaccurate angular indexing and positioning of machine tool shafts in the prior art.

Method used

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  • Axis indexing and positioning structure

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Experimental program
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Effect test

Embodiment Construction

[0009] The shaft index positioning structure of the present invention will be further described below with reference to the accompanying drawings.

[0010] The shaft indexing positioning structure of the present invention mainly consists of three end-face gear plates, and a cylinder piston that can be pushed along the axial direction of the shaft. The first gear plate 1 is combined with the housing 4 and the cylinder piston 5. The cylinder piston 5 communicates with the oil inlet pipe 7 and the oil return pipe 8. The first gear plate 1 can move axially along the shaft 6 under the push of the cylinder piston 5; The second gear plate 2 is arranged on the outer circle of the third gear plate 3 and is fixed on the housing 4 in a non-rotatable manner; the third gear plate 3 is arranged on the shaft 6 and can rotate together with the shaft 6. The number of teeth of the 3-piece end face gear disc can be determined according to the requirements of the specific machine tool indexing angle...

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Abstract

The invention discloses an axis indexing and positioning structure, which mainly comprises three contrate gears, an oil cylinder piston capable of being axially pushed along an axis and the like. The first contrate gear is combined with a shell and the oil cylinder piston; under the push of the oil cylinder piston, the first contrate gear can be moved axially of the axis; the second contrate gearis fixed on the shell; and the third contrate gear is arranged on the axis and can rotate together with the axis. For the three contrate gears, the number of teeth of the indexing angle can be 72, 120, 144, 360 and the like. In the axis indexing and positioning structure, the oil cylinder piston is directly connected to the contrite gears and is directly driven, thus the mechanical transmission is greatly simplified, and highest positional accuracy can reach 3s. And the equipment failure rate is effectively reduced and lowered, the manufacture and maintenance costs are reduced, and the axis indexing and positioning structure is especially suitable for occasions requiring compact structure and high indexing positional accuracy for large and heavy numerically-controlled machine tool spindles.

Description

[0001] Field [0002] The invention belongs to the indexing and positioning structure of the shaft, and is especially suitable for the indexing and positioning structure of the shaft in a large or heavy machine tool. Background technique [0003] On a machine tool, such as a turning and milling machining center for turning and milling conversion, the spindle needs precise angular positioning and indexing. When machining workpieces with complex shapes and structures, the turning and milling machining center needs to turn the inner and outer circles. In the case of milling flat surfaces on the surface of the workpiece, the spindle must change the state of the spindle according to the working conditions, and at any time between the turning and milling Conversion requires that the spindle can be accurately indexed and positioned at an angle of nX1° or even nX0.5°. At present, the shaft indexing and positioning schemes used in the machinery industry are usually: internal and external g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q16/02
Inventor 桂林徐金方黄友弢陈昳
Owner WUHAN HEAVY MACHINE TOOL GRP