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The forming method of the pulley

A technology of pulleys and pulleys, applied to metal processing equipment, etc., can solve problems such as forming pulleys

Inactive Publication Date: 2014-10-15
JATCO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that it is difficult to accurately form the outer peripheral end of the pulley at a predetermined position.

Method used

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  • The forming method of the pulley
  • The forming method of the pulley
  • The forming method of the pulley

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Experimental program
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Embodiment Construction

[0028] use figure 1 Embodiments of the present invention will be described. This embodiment relates to a method of forming a pulley for a belt-type continuously variable transmission, figure 1 It is a figure which shows the manufacturing process of the pulley of a belt type continuously variable transmission. In this embodiment, the manufacturing process of the fixed pulley 1 will be described. The fixed pulley 1 has a shaft portion 2 and a pulley 3 ( figure 1 (f)) A movable pulley (not shown) is inserted through the shaft portion 2 to form a pulley. In addition, in this embodiment, the case where the fixed pulley 1 is formed by pressing in the vertical direction is described, but it is not limited thereto. In addition, in this embodiment, for figure 1 In the models shown, the upper model is described as a movable model and the lower model is described as a fixed model, but the present invention is not limited thereto.

[0029] In the first step, by deep drawing, the...

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PUM

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Abstract

The present invention provides a method for forming a pulley of a continuously variable transmission from a cylindrical metal component. When the cylindrical metal member (4) is punched and formed into the fixed pulley (1), the tube of the metal member (4) is bent at the first bent portion (7) that becomes the outer peripheral end of the pulley (3). part (5), using a first model (10) having a first tapered part (14) inclined at an angle bent toward the central axis (O) with the first curved part (7) as a base point, and a first model (10) having a second tapered part ( The second mold (12) of 15) is punched to form the second inclined surface (13). Then, the metal part (4) is punched using the third mold (21) and the fourth mold (23) having the third taper portion (24) inclined at the pulley angle, and the fixed pulley (1) is formed.

Description

technical field [0001] The invention relates to a method for forming a pulley. Background technique [0002] Conventionally, Patent Document 1 discloses a method for forming molded products with different diameters from a cylindrical metal member by deep drawing the metal member to form a molded product. [0003] In the case of forming a pulley of a continuously variable transmission from a cylindrical metal part using the method of Patent Document 1, the cylindrical metal part 100 is deep-drawn in the first step, and formed on the shaft 120 side of the pulley so as to be inclined at the pulley angle. The inclined surface 101 ( image 3 (a)), in the second process, the outer peripheral surface of the cylindrical portion 100a of the metal member 100 is guided by the guide pattern 102 ( image 3 (b)) Press the cylindrical metal member 100 with the dies 103 and 104, thereby forming the first curved portion 105 at a predetermined position on the outer periphery of the pulley 108...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D53/26
Inventor 斋藤和实
Owner JATCO LTD