Outward expansion mandrel with multiple support parts

A technology of expanding the mandrel and supporting parts, applied in the direction of expanding the mandrel, etc., can solve the problems of unstable clamping positioning, scrapped workpiece processing, insufficient clamping force, etc., and achieves good repeated clamping coaxiality, use The effect of long life and good turning quality

Active Publication Date: 2016-10-26
TENGXUAN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the length of shell parts is long, the clamping and positioning will be unstable depending on the support of the expanding mandrel at a certain section, and in many cases, the clamping force is not enough, which may cause the workpiece to be d

Method used

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  • Outward expansion mandrel with multiple support parts
  • Outward expansion mandrel with multiple support parts
  • Outward expansion mandrel with multiple support parts

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[0029] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents falling within the scope of the spirit and connotation of the appended claims.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential", etc. The ...

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Abstract

The invention provides an outward expansion mandrel with multiple support parts. The outward expansion mandrel comprises a mandrel body, wherein a first outward expansion part and a second outward expansion part of which the outer walls can expand outwards are arranged on the mandrel in the axial direction; two outward expanding support parts are arranged in the axial direction to support inner holes of workpieces in tandem in the axial direction, so that the workpieces can be positioned more stably; during turning, a better turning quality can be obtained; and owing to the in-tandem supporting mode, when the workpieces are turned around to be clamped, a good repeated clamping coaxiality can be acquired. The outward expansion mandrel is simple in structure, high in positioning precision and long in service life.

Description

technical field [0001] The invention relates to an outwardly expanding mandrel, in particular to an outwardly expanding mandrel with a plurality of supporting parts. Background technique [0002] In the processing of shell parts, when the shape of the part is irregular, or the outside of the part is the rough surface of casting or forging, the outer surface of the part cannot be directly used as the positioning and clamping surface , Most of the time, it is necessary to position and clamp in the form of supporting the inner hole. Generally, when supporting the inner hole, tooling fixtures such as external expansion mandrels are used. [0003] However, when the length of shell parts is long, the clamping and positioning will be unstable depending on the support of the expanding mandrel at a certain section, and in many cases, the clamping force is not enough, which may cause the workpiece to be damaged during subsequent machining. Loosening or moving will cause the workpiece...

Claims

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Application Information

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IPC IPC(8): B23B31/40
CPCB23B31/404
Inventor 李继锁吴庆华王星星李学洋卢海旭严志徐回杨勇
Owner TENGXUAN TECH
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