Internal expansion tool for mechanical processing

A technology of machining and expanding tools, which is applied in the field of machining tools, can solve the problems of high roundness and coaxiality, which cannot meet the requirements of parts processing, etc., and achieve uniform distribution of clamping force, guarantee of grinding radial stress, The effect of a large contact surface on the inner wall

Inactive Publication Date: 2012-12-12
SHENYANG FORTUNE PRECISION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Processing of high-precision and high-speed rotary sleeve parts, the roughness of the inner and outer circles, dimensional accuracy, roundness and coaxiality require high...

Method used

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  • Internal expansion tool for mechanical processing
  • Internal expansion tool for mechanical processing
  • Internal expansion tool for mechanical processing

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: The present invention is applicable to the processing of thin-walled tubular and mouth-stepped tubular parts, including an expander main body 1, a mandrel 2, and a nut 3. The expander main body 1 is composed of at least three petals (in this example It is divided into three lobes evenly along the circumference), and after combination, it becomes a cylindrical structure in which the outer peripheral surface matches the inner peripheral surface of the part to be processed, with an inner tapered hole inside, and the tapered hole of the mandrel 2 is the same as the outer circle of the expander main body 1 The shaft is a structure matched with the inner tapered hole of the expander main body 1, the mandrel 2 is placed in the expander main body 1, the protruding end is fixed by the nut 3, and the shaft centers at both ends are mounted on the machine tool. There is a gap 5 between adjacent petals of the expander main body 1, and the gap 5 is determined by the diam...

Embodiment 2

[0019] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the main body of the expander in this embodiment is evenly divided into four lobes along the circumference, which can also meet the requirements for processing parts.

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PUM

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Abstract

The invention provides an internal expansion tool for mechanical processing, and belongs to the technical field of devices for mechanical processing. The internal expansion tool comprises an expansion tool main body, a mandrel and a nut, wherein the expansion tool main body comprises at least three blades which can be combined to form a cylindrical structure of which the periphery is matched with an internal circumference of a part to be processed; the mandrel is coaxial with the expansion tool main body and is arranged in the expansion tool main body, and the extending end of the mandrel is fixed through the nut; the axes at the two ends of the mandrel are top-arranged on a machine tool. The internal expansion tool is large in contact area on the internal wall, the clamping force is uniformly distributed, and the milling and grinding radial stress and deformation based on clamping stress are reduced, so that the roundness is ensured. An internal hole and an external circle of the expansion tool main body are ensured to achieve the coaxiality. The end surface of the part can be synchronously milled and grinded, so that the verticality of the end surfaces can be ensured. The internal expansion tool is applicable to processing thin-wall tubular parts and step-mouth tubular parts.

Description

technical field [0001] The invention belongs to the technical field of machining tools, in particular to an internal expansion tool for machining. technical background [0002] Processing of high-precision high-speed rotary sleeve parts, the roughness of the inner and outer circles, dimensional accuracy, roundness and coaxiality require high requirements. For such thin-walled tube-shaped parts and mouth step-shaped parts turning or grinding, the existing Advanced fixtures cannot meet the processing of such parts. Contents of the invention [0003] In view of the above-mentioned technical problems, the object of the present invention is to provide an internal expansion tool for machining, which is suitable for processing thin-walled tubular parts and stepped tubular parts at the mouth. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: [0005] An internal expansion tool for machining, including a main body of th...

Claims

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Application Information

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IPC IPC(8): B23B31/40
Inventor 王斌
Owner SHENYANG FORTUNE PRECISION EQUIP CO LTD
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