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Clutch gear manufacturing apparatus and clutch gear manufacturing method

A technology of gear manufacturing and manufacturing method, which is applied in the direction of manufacturing tools, forging/pressing/hammer devices, wheels, etc., can solve the problems of complicated manufacturing processes, deformation of taper holes, and increasing processes, so as to reduce the number of processes and restrain the increase of the number of processes. , the effect of preventing deformation

Active Publication Date: 2009-02-11
NISSAN MOTOR CO LTD
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AI Technical Summary

Problems solved by technology

[0006] However, there is a problem that if the tapered hole is formed by machining after forming the inverted tapered shape, the number of steps is increased and the manufacturing process becomes complicated, and if the tapered hole is formed by forging or the like before forming the inverted tapered shape, the Distortion of the taper hole when forming an inverted taper

Method used

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  • Clutch gear manufacturing apparatus and clutch gear manufacturing method
  • Clutch gear manufacturing apparatus and clutch gear manufacturing method
  • Clutch gear manufacturing apparatus and clutch gear manufacturing method

Examples

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Embodiment Construction

[0035] Hereinafter, the best mode for carrying out the present invention will be described using examples.

[0036] First, the clutch gears used in the product multi-cone synchronizer will be described.

[0037] figure 1 It is a front view of a clutch gear manufactured by a clutch gear tooth manufacturing device and a reverse taper forming device.

[0038] The clutch gear W has a plurality of spline teeth 1 formed at intervals on its outer periphery, and a herringbone-shaped chamfer 1a is formed at the end of each spline tooth 1 .

[0039] Moreover, on the side of the clutch gear W, a tapered portion 2 is formed on the inner peripheral surface 3 side, and four tapered holes are formed at equal intervals between the tapered portion 2 and the spline teeth 1 on the side surface of the clutch gear W. 4.

[0040]The taper hole 4 is formed to be engageable with a claw portion of the center cone so that the center cone disposed between the inner cone and the outer cone of the mult...

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Abstract

The invention provides a clutch gear manufacturing apparatus of the clutch gear for restraining the increase of process number, while manufacturing multiple tapered synchronization device and a clutch gear manufacturing method. The clutch gear manufacturing apparatus includes a die (16) that allows a clutch gear primary product (Wb), which has spline teeth (1) with chamfers (1a) formed in an outer peripheral surface of the primary product (Wb), to be disposed in the die (16), and includes a blade(16a) capable of forming reverse tapers (1b) at the spline teeth (1); a punch (18) capable of pressing down the primary product (Wb) disposed in the die (16) so that the spline teeth (1) are pressed by the blade (16a); a knockout sleeve (17) that receives the primary product (Wb) which is pressed down by the punch (18); and a punch pin (31) that forms a cone hole (4) in a side surface of the primary product (Wb) while the spline teeth (1) are pressed by the blade (16a).

Description

technical field [0001] The invention relates to a clutch gear manufacturing device and a clutch gear manufacturing method. Background technique [0002] Conventionally, as such a clutch gear manufacturing apparatus, there has been proposed a clutch gear manufacturing apparatus in which spline teeth of a workpiece formed with chamfered straight spline teeth are formed into a reverse taper shape. [0003] In this device, by aligning the phase of the workpiece with the mold so that no excessive force is applied to the workpiece, it is possible to form an inverted tapered shape with high precision. [0004] However, the clutch gear used in the multi-cone synchronous device needs a cone that can be engaged with the claws of the inner cone in order to integrally rotate the middle cone arranged between the inner cone and the outer cone. However, in order to ensure the accuracy of the inverted tapered shape, the tapered hole is generally formed by machining after forming the invert...

Claims

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Application Information

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IPC IPC(8): B21K1/30B21J13/02B21J13/08
CPCB21K1/30B21J5/027
Inventor 松田晃芳
Owner NISSAN MOTOR CO LTD
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