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Method of manufacturing hub sheel for spoke wheel and hub sheel produced using said method

A manufacturing method and hub technology, applied in the direction of spoked wheels, hubs, manufacturing tools, etc., can solve the problems that the holes cannot be of any shape, and the design of spokes/hubs is inconvenient.

Inactive Publication Date: 2013-08-14
MAVIC SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] [14] Also, the current processing technology limits the shape of the spoke hooking eyelets / grooves, so these eyelets cannot be of any shape, which may be very inconvenient for the spoke / hub design

Method used

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  • Method of manufacturing hub sheel for spoke wheel and hub sheel produced using said method
  • Method of manufacturing hub sheel for spoke wheel and hub sheel produced using said method
  • Method of manufacturing hub sheel for spoke wheel and hub sheel produced using said method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] [42] in Figures 1 to 3 In the different implementation stages of a prior art hub body are shown.

[0043] [43] Therefore figure 1 A rod 10 is indicated, for example, a solid rod of aluminum alloy obtained by extrusion.

[0044] [44] figure 2 The hub body blank 11 obtained after the first machining stage is shown. The machining operations consist of turning operations and sectioning operations of the rod 11 which give the blank 11 its outer shape and its final dimensions in relation to the hub shaft. Segmenting can be performed before or after turning operations. It is also possible during these operations to form an intermediate bore 12 through which the shaft of the hub will later pass, optionally with chambers forming the bearing grooves.

[0045] [45] It was found that in this case a large amount of material was removed during machining mainly between the side plates 14 and 15 where the spokes are hooked and at the bore 12 . Considerable material can be save...

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PUM

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Abstract

The method involves fabricating a profile (20) by extrusion of die. A central cylindrical cut (22) with lateral extension (23) and closed cuts (25) are obtained by mandrels placed in the die. The profile is cut into several disks (27) by a cutting tool, where the disk constitutes a part e.g. flange and spacer, of a hub body. The closed cuts have hooking orifices in the shape of double button holes to receive a spoke (28).

Description

technical field [0001] [01] The present invention relates to a method of manufacturing a hub body for a spoked wheel. The invention also relates to a hub body produced according to said method, a hub and a spoked wheel comprising the hub body. Background technique [0002] [02] A spoked wheel, such as a bicycle wheel, generally includes a circumferential rim, a central hub, and connecting spokes between the rim and hub. The hub has a central shaft that is fixed to the bicycle frame and a hub body that is rotatably mounted around the shaft. The hub body usually has two side plates connected together by a connecting beam. [0003] [03] The spokes typically used for spoked wheels are either metal or composite. Spokes are usually divided into straight spokes and curved spokes, the two hook ends of the straight spokes are in the straight line of the spoke body, and the head of the curved spoke is bent laterally by the elbow of the spoke body. As a general rule, the retaining ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/00B60B1/04
CPCB21D53/26B60B1/042B60B27/023B60B1/041B60B1/0261B60B1/003B60B27/026
Inventor J-L·弗P·拉梅尔
Owner MAVIC SA