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Centering tool

A tooling and centering technology, which is applied in the direction of manufacturing tools, metal processing equipment, gear tooth manufacturing devices, etc., can solve problems such as difficult to guarantee dimensional accuracy and processing quality, achieve continuous transmission, improve production efficiency, and high workpiece processing accuracy Effect

Inactive Publication Date: 2016-07-06
CHONGQING QIFU MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the machining and manufacturing industry, gear hobbing refers to the use of gear hobs or worm gear hobs to process the tooth surfaces of gears or worm gears according to the generation method. During processing, it is necessary to use gear hobbing tools to fix the parts to facilitate hobbing machines. For processing, the existing hobbing tooling has a fit gap for the circumferential positioning of the workpiece, and the workpiece is prone to small-angle rotation during processing, which is difficult to ensure dimensional accuracy and processing quality

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Embodiment Construction

[0016] figure 1 It is a structural schematic diagram of the present invention, figure 2 for figure 1 In the sectional view at A, as shown in the figure, the centering tool of this embodiment includes a double thimble and a circumferential positioning device fixedly connected with a thimble for positioning the workpiece 1 in the circumferential direction; the circumferential positioning device includes The internal spline sleeve 2 used to cooperate with the external spline of the workpiece 1 and the anti-backlash mechanism used to eliminate the circumferential fit gap between the workpiece 1 and the internal spline sleeve 2; the anti-backlash mechanism includes the anti-backlash ring gear 3 and the worm 4 ; The anti-backlash ring gear 3 is coaxially arranged with the inner spline sleeve 2 and is connected with the inner spline sleeve 2 around its axis; the worm 4 is perpendicular to the axis of the anti-backlash ring gear 3 and installed on the inner spline sleeve 2 , the wo...

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Abstract

The invention discloses a centering tool. The centering tool comprises two centers and a circumferential positioning device, and the circumferential positioning device is fixedly connected with the corresponding center and used for circumferentially positioning a workpiece. The circumferential positioning device comprises an internal spline sleeve used for being matched with a workpiece outer spline and a clearance elimination mechanism used for eliminating the circumferential fit clearance of the workpiece and the internal spline sleeve. The clearance elimination mechanism comprises a clearance elimination gear ring and a worm. The clearance elimination gear ring is arranged coaxial with the internal spline sleeve and rotatably connected with the internal spline sleeve around the axis of the clearance elimination gear ring. The worm is perpendicular to the axis of the clearance elimination gear ring and is mounted on the internal spline sleeve. The worm and the clearance elimination gear ring are connected to form a worm-gear pair. The clearance elimination gear ring is provided with internal teeth used for being matched with the workpiece outer spline and outer teeth used for being matched with the worm. The circumference clearance between the workpiece and the tool can be effectively eliminated, so that the tool can conduct driving continuously, and the workpiece machining precision is high.

Description

technical field [0001] The invention relates to a tool, in particular to a centering tool. Background technique [0002] In the machining and manufacturing industry, gear hobbing refers to the use of gear hobs or worm gear hobs to process the tooth surfaces of gears or worm gears according to the generation method. During processing, it is necessary to use gear hobbing tools to fix the parts to facilitate hobbing machines. For processing, the existing gear hobbing tooling has a fit gap in the circumferential positioning of the workpiece, and the workpiece is prone to small-angle rotation during processing, which is difficult to ensure dimensional accuracy and processing quality. [0003] Therefore, in order to solve the above problems, there is a need for a gear hobbing tool capable of self-centering and high positioning accuracy. Contents of the invention [0004] In view of this, the object of the present invention is to overcome the defects in the prior art and provide...

Claims

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Application Information

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IPC IPC(8): B23F23/06
Inventor 王明杨梁绍辉
Owner CHONGQING QIFU MACHINERY