METHOD OF PRODUCING MEMBER HAVING FACE-GEARED SURFACE

Abstract

The present invention provides a method of producing a member with a face-geared surface including the steps of:

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and additional features and characteristics of the present invention will become more apparent from the following detailed description considered with reference to the accompanying drawings, wherein:

FIG. 1 illustrates a front view indicating states of a work piece and a hob immediately before a process is applied to the work piece by the hob;

FIG. 2 illustrates a front view indicating states of the work piece and the hob immediately before a process is applied to the work piece by the hob;

FIG. 3 illustrates a front view indicating states of the work piece and the hob, which are not offset;

FIG. 4A illustrates a diagram indicating a state at which the work piece is processed by a rotation of the hob;

FIG. 4B illustrates a diagram indicating a state at which the work piece is processed by the rotation of the hob;

FIG. 4C illustrates a diagram indicating a state at which the work piece is processed by the rotation of the hob;

FIG. 4D illustrates a diagram indicating a state at which the work piece is processed by the rotation of the hob;

FIG. 4E illustrates a diagram indicating a state at which the work piece is processed by the rotation of the hob;

FIG. 4F illustrates a diagram indicating a state at which the work piece is processed by the rotation of the hob;

FIG. 5 illustrates a front view of the hob;

FIG. 6A illustrates a diagram indicating a process of producing a faced-gear, according to the second embodiment;

FIG. 6B illustrates a diagram indicating a process of producing a faced-gear, according to the second embodiment;

FIG. 6C illustrates a diagram indicating a process of producing a faced-gear, according to the second embodiment;

FIG. 6D illustrates a diagram indicating a process of producing a faced-gear, according to the second embodiment;

FIG. 6E illustrates a diagram indicating a process of producing a faced-gear, according to the second embodiment;

FIG. 7 illustrates a diagram indicating a process of producing a faced-gear, according to the third embodiment;

FIG. 8 illustrates a diagram indicating a process of producing a faced-gear, according to the fourth embodiment;

FIG. 9 illustrates a diagram indicating a process of producing a faced-gear, according to the fifth embodiment;

FIG. 10A illustrates a diagram indicating a process of producing a faced-gear, according to the sixth embodiment;

FIG. 10B illustrates a diagram indicating a process of producing a faced-gear, according to the sixth embodiment;

FIG. 10C illustrates a diagram indicating a process of producing a faced-gear, according to the sixth embodiment;

FIG. 10D illustrates a diagram indicating a process of producing a faced-gear, according to the sixth embodiment;

FIG. 10E illustrates a diagram indicating a process of producing a faced-gear, according to the sixth embodiment;

FIG. 11A illustrates a cross section indicating a spiral bevel gear meshing with a pinion related to a prior art;

FIG. 11B illustrates a perspective view indicating the spiral bevel gear meshing with the pinion related to the prior art;

FIG. 12A illustrates a cross section indicating a face gear meshing with a pinion related to a prior art; and

FIG. 12B illustrates a perspective view indicating the face gear meshing with the pinion related to the prior art.

Claims

1. A method of producing a member with a face-geared surface comprising the steps of: (a) an initial process preparing a work piece and a hob, the work piece having an area to be geared, the hob having a blade, the hob being brought into an axial movement when rotated through an angle of 360 degrees about its longitudinal axis, the initial process bringing the work piece to oppose the hob with a distance;(b) a geared surface forming process forming a geared surface on a part of the area by rotating the hob about its longitudinal axis in one direction through an angle of less than 360 degrees after an establishment of a mutual engagement between the hob and the work piece which results from moving at least one of the hob and the work piece in a radial direction of the hob;(c) a retracting process retracting the at least one of the hob and the work piece in the radial direction of the hob to establish a separation of the hob from the work piece before the hob completes its 360 degree rotation about its longitudinal axis, the retracting process retracting the hob in its longitudinal direction through a distance which is equal to an axial movement amount of the hob resulting from rotating the hob; and(d) a repeating process repeating the geared surface forming process and the retracting process to produce a full face-geared surface on the area of the work piece.

2. The method as set forth in claim 1, wherein the member having the faced-gear surface is used as one of a face gear, an electrode for electrochemical machining, and an electrode for electro-discharge machining.

3. The method as set forth in claim 1, wherein during the geared-surface forming process the work piece is being made immovable.

4. The method as set forth in claim 1, wherein during the retracting process the work piece is rotated through an angle about its longitudinal axis to move the work.

5. The method as set forth in claim 1, wherein an offset is defined between the longitudinal axis of the work piece and the longitudinal axis of the hob.

6. The method as set forth is claim 1 further comprising the steps of: employing process employing the member with the gear-faced surface which is produced by the method of claim as an electrode:preparing process preparing a blank:tranfering process transferring the profile of the geared surface of the electrode on to the blank to form a die member whose cavity is formed with the transferred gear-surfaced profile.

7. The method as set forth in claim 6, the cavity of the die member is filled with molding member to produce a member with a re-transferred profile of the geared surface of the electrode.