A precision rolling forming method and device for an inner stepped cylindrical part

A technology of inner steps and cylindrical parts, which is applied in the field of rolling forming of cylindrical parts, can solve the problems of limited axial height of inner stepped cylindrical parts and complicated billet making process, and achieve easy control of geometric dimensions and high forming precision , the effect of reducing production costs

Active Publication Date: 2015-09-30
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although this method can produce high-performance inner stepped cylindrical parts, the billet making process is very complicated, and the axial height of the rolled inner stepped cylindrical parts is limited

Method used

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  • A precision rolling forming method and device for an inner stepped cylindrical part
  • A precision rolling forming method and device for an inner stepped cylindrical part
  • A precision rolling forming method and device for an inner stepped cylindrical part

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Embodiment Construction

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] The precise roll-forming method of the inner stepped cylindrical part of the present invention comprises the following steps:

[0029] S1, obtaining a circular blank 3, which is a ring with a rectangular cross section. It can be made by upsetting, punching, punching and connecting skin, and flat end face. The inner stepped cylindrical part 5 is the product obtained by the method of the present invention. Such as figure 1 , figure 2 As shown, the height of blank 3 Outer diameter of blank 3 the inside diameter of d 0 = ( D K 2 ...

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Abstract

The invention relates to an accurate roll forming method and a device of an inner step cylindrical workpiece, wherein the accurate roll forming method of the inner step cylindrical workpiece comprises the following steps: step (S) 1, acquiring annular blanks; S2, placing the annular blanks inside an annular driving roller, and the outer walls of the blanks closely clinging to the inner wall of the driving roller; S3, placing a core roller inside the blanks, and arranging a groove on the core roller; S4, rotating the driving roller and the blanks together, and the core roller conducting linear feed movement along the blank radial direction; S5, the core roller stopping feeding and acquiring produced inner step cylindrical workpieces when axial heights of the blanks achieve an index value. The accurate roll forming device of the inner step cylindrical workpiece comprises the driving roller (1), the core roller (2), a rotation driving device and a linear driving device, the driving roller (1) is annular, and the core roller is cylindrical. Continuous partial plastic deformation is used for achieving a one-step integral forming inner step cylindrical workpiece, and the accurate roll forming method and the device of the inner step cylindrical workpiece have the advantages of being prominent in energy and material conservation, and capable of reducing production cost and improving productivity and product performance effect.

Description

technical field [0001] The invention relates to the field of roll forming of cylindrical parts, more specifically, to a precision rolling forming method and device for inner stepped cylindrical parts. Background technique [0002] With the rapid development of industry, there is a huge demand for various high-performance special-shaped cross-section rings. The inner stepped cylindrical part is a typical special-shaped cross-section ring, and its main products include hub bearing rings, water pump bearing rings, etc. It not only requires high precision, but also requires high service performance and service life, and the key to meeting these requirements lies in the forming and manufacturing quality of the inner stepped cylindrical part. At present, there are mainly two processing and manufacturing methods for inner stepped cylindrical parts. The first is turning processing, that is, the tube blank is directly turned into an inner stepped cylindrical part. Turning is not o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21H1/18
Inventor 华林韩星会周光华路博涵
Owner WUHAN UNIV OF TECH
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