Helical six-point floating centering mechanism

A centering mechanism and helical tooth technology, which is applied in the field of helical six-point floating centering mechanism, can solve the problems of complex system and internal structure, small three-point contact area, and uneven force on parts, so as to shorten production preparation Periodicity, simple and compact structure, and the effect of reducing deformation of clamping

Active Publication Date: 2011-10-26
SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD
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AI Technical Summary

Problems solved by technology

[0004] Three-jaw self-centering chucks are roughly divided into several structural types according to their transmission methods: coil type, wedge type, lever type, and helical tooth type. The working principle is simple and reliable, and they all use various transmission methods to realize three-jaw. The synchronous centripetal movement, and then realize the centering clamping of the parts, its main disadvantage is that the three-point contact area between the claw body and the parts is small and scattered, resulting in uneven force on the parts and large radial deformation
Two-two floating of the six jaws can not only completely position but also ensure reliable contact between each jaw and the workpiece, but its system and internal structure are relatively complicated.

Method used

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  • Helical six-point floating centering mechanism
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  • Helical six-point floating centering mechanism

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as Figure 1 to Figure 8 As shown, a helical-toothed six-point floating centering mechanism includes a main body frame composed of a front flange 1, a body 2 and a rear flange 3, and a first slide that can slide freely in the axial direction is embedded in the shaft hole of the body 2. There are six T-shaped slots evenly distributed in the radial direction on the outer end surface of the front flange 1, and the bottom claws 5 that can slide freely relative to the radial direction are embedded in the T-shaped slots, and the front end cover is arranged on the center of the outer end surface of the front flange 1. After the transmission assembly is combined with the baffle plate 4 and the first slider, they are respectively embedded in three groups of square grooves uniformly distributed in the radial direction on the inner e...

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Abstract

The invention discloses a helical six-point floating centering mechanism which is characterized in that a paired floating six-claw centering process can be realized by helical meshing transmission of three groups of transmission assemblies formed by virtue of mutual meshing of a second slider, a third slider and a fourth slider, thus achieving good six-point centering and clamping performances onrotating body parts, effectively reducing the deformation of parts with weak rigidity and thin wall due to clamping, and playing a positive role in promoting the process standardization.

Description

technical field [0001] The invention relates to a centering device of a revolving body part on a metal cutting machine tool, in particular to a helical gear six-point floating centering mechanism. Background technique [0002] The concrete structure of existing centering mechanism roughly has following several at present: [0003] 1. Three-jaw self-centering chuck [0004] Three-jaw self-centering chucks are roughly divided into several structural types according to their transmission methods: coil type, wedge type, lever type, and helical tooth type. The working principle is simple and reliable, and they all use various transmission methods to realize three-jaw. The synchronous centripetal movement of the claw body realizes the centering clamping of the parts. Its main disadvantage is that the three-point contact area between the claw body and the parts is small and scattered, resulting in uneven force on the parts and large radial deformation. Although the workpiece def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B31/16
Inventor 杨振宇
Owner SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD
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