JPS5894916A - Gear honing tool - Google Patents

Abstract

PURPOSE:To enhance the working capability of honing a gear by combining a plurality of gear shaped hones in the axial direction thereof so that the both gear-tooth surfaces of a work may be treated, simultaneously. CONSTITUTION:Tools 10 which are attached to a rotary shaft through attaching holes 26, are engaged with a work 2, and therefore, both gear-tooth surfaces of the work 2 are subjected to a honing process. Since a circumferential phase difference may be given between the set of first and third hones 11, 13 and the set of second and forth hones 12, 14, this honing process may be directly applied to a work having a given root diameter.

Description

[Detailed description of the invention] The present invention relates to a gear honing tool.

A conventional gear honing tool is composed of a single gear-shaped horn 1, as shown in FIG.

Conventionally, there are two methods for honing a workpiece using the horn 1 shown in FIG. 1, and one of them is selected and adopted.

One method, as shown in Fig. 2, is to apply a brake 3 between the horn 1 and the workpiece 2 in advance, keep the distance between the centers of the horn 1 and the workpiece 2 constant, and put a brake device (not shown) on the driven side. ), apply a brake to the expanded workpiece 2 with a horn of 1t, apply honing pressure to the tooth surface of the workpiece 2,
After machining one tooth surface of the workpiece 2, the rotation is reversed, and the other surface of the workpiece 2 is machined in the same manner as described above.

Another method, as shown in No. 3 TFJA, is to mesh the horn 1 and the workpiece 2 without giving any compression, and to vary the distance between the centers of the horn 1 and the workpiece 2, so that both sides of the workpiece 20 can be simultaneously touched. I'm trying to finish it.

However, the former has the disadvantage of being inefficient because it can only process one tooth surface of the workpiece 20, and also has the disadvantage that the frictional resistance of the brake changes depending on the circumferential speed, the honing pressure fluctuates, and the disadvantage that frictional heat is generated. There is also.

Further, the latter method has the drawback that it is difficult to control the tooth thickness against wear of the horn 1 when the bottom diameter of the workpiece 2 is specified as in a gear coupling sleeve, and thus cannot be applied.

The object of the present invention is to eliminate the drawbacks in the prior art,
To provide a gear honing tool which can omit a brake device, can simultaneously process both tooth flanks of a workpiece, and can be applied to a workpiece having a defined tooth bottom diameter.

A feature of the present invention is that a plurality of gear-shaped horns are combined in the axial direction, and a spring is compressed between adjacent horns, and the spring urges the adjacent horns to rotate in opposite directions in the circumferential direction. However, the structure is such that a phase difference occurs in the circumferential direction, and all of the above objects can be achieved by the structure.

Hereinafter, the present invention will be explained based on the drawings.

4 to 8 show an embodiment of the present invention, in which first... Second. It is constructed by combining 3rd and 4th horns 11, 12, 13, and 14. ' The first to fourth horns 11 to 14 are also formed in the shape of a gear.

A second horn 12 is fitted into the first horn 11 via a stepped portion 15 so as to be rotatable with respect to each other in the circumferential direction,
The fourth horn 1 is connected to the third horn 13 via the stepped portion 16.
4 are fitted together so that they can rotate relative to each other in the circumferential direction.

In addition, the first horn 11 and the third horn 13 are inserted through a plurality of locations in the circumferential direction and are rotated together in the circumferential direction with a nine bolt 17 and a nine nut 18 that are fitted therein. The second horn 12 and the fourth horn 14 are inserted into elongated holes 19 that are provided at multiple locations in the circumferential direction of the third horn 7130 and are formed long in the circumferential direction. They are connected to each other so as to be able to rotate together in the circumferential direction via a stop pin 20.

Further, the first to fourth horns 11 to 14 are fitted into a presser plate 21 that is in contact with the outer end surface of the fourth horn 14 and an external thread 22 formed in the boss portion of the third horn 13. It is assembled into one tool 10 with a nut 23.

Said 1st. Between the second horns 11 and 12, a spring accommodating chamber 24 having a full circumferential groove is formed near the outer periphery of the stepped portion 15.
5 are inserted so as to be held in place, and both ends of the horns 250 pass through holes 27 and 28 on the sides of the spring housing chambers 24 of the corresponding horns 11 and 12, respectively, and are locked therein. Also the third. Between the fourth horns 13 and 14, a spring accommodating chamber 24' having a full circumferential groove is formed near the outer periphery of the stepped portion 16, and a ring-shaped spring 25' is installed in this accommodating chamber 24'. Insert the spring 25' so that it is clamped, and attach the corresponding horns 1 to both ends of the spring 25'.
1. Hole 27' on the side of the spring receiving chamber 24' of 12, 2
8' and is locked.

And, as mentioned above, the first. Third horn 11.13
The second. and the second. As a result of being connected to the fourth horn 712.14 through the pin 20 so that they can rotate together, the set of horns 11.13 of the 1st degree #I3 and the set of the 2nd. The fourth set of horns 12.14 consists of compression springs 25
, 25' are urged to rotate in opposite directions in the circumferential direction, and are configured to generate a phase difference in the circumferential direction within the range in which the stop pin 2o can move within the elongated hole 19. ing.

The gear honing tool of the above embodiment is used and operates as follows.

That is, the tool 10 is attached to the rotating shaft (not shown) through the mounting hole 26.
As shown in FIG.
The honing process is performed by engaging the tool 10 and rotating the workpiece 2 and the tool lO.

During this processing, the first. A compression spring 25 is compressed between the second horn 11 and the third horn. Fourth horn 11.14
Due to the action of the compression spring 25' compressed between the first and third horns 11, 13 and the second, as shown in FIG. The fourth set of horns 12 and 14 are urged to rotate in opposite directions to each other in the circumferential direction, and the first set of
゜Third horn 11.13 set and second horn. 4th horn 1
A phase difference is generated in the circumferential direction between the sets of No. 2 and 14, and one tooth surface of the workpiece 2 has the No. The third set of horns 11.13 and the second. One of the 140 pairs of fourth horns is in contact with the other tooth surface of the workpiece 2. The third set of horns 11.13 and the second. Either the other of the set of fourth horns 12.14 is in contact.

Therefore, the tool 10 comes into contact with both tooth surfaces of the workpiece 2 without crushing and with appropriate honing pressure, so the distance between the centers of the workpiece 2 and the tool 1o can be changed without applying a brake to the workpiece 2 or the tool 1o. Without,
As shown in FIG. 8, both sides of the workpiece 20 can be honed simultaneously.

Also, 1st. Third horn 11.13 set and second and fourth horns
Since a phase difference can be generated in the circumferential direction between the horns 12 and 14, it is possible to apply this method even to a workpiece having a defined root diameter.

It should be noted that the present invention is not limited to the combination of 41 m of horns, and the structure of the assembly of springs for giving a phase difference in the circumferential direction to adjacent horns is not limited to the illustrated embodiment. According to the structure 1 described above, according to the present invention, one of the plurality of adjacent horns arranged in the axial direction is in contact with one tooth surface of the workpiece, and the other of the adjacent horns is in contact with one tooth surface of the workpiece. Since it is in contact with the other surface and is in contact with an appropriate honing pressure, both sides of the workpiece can be honed simultaneously, which has the effect of significantly improving machining efficiency.

Furthermore, according to the present invention, a brake device that applies a brake to a tool or a workpiece can be omitted, which not only simplifies equipment but also eliminates all the various problems associated with applying a brake.

Furthermore, according to the present invention, since a phase difference is generated in the circumferential direction between adjacent horns, the present invention can be applied directly to workpieces having a defined root diameter.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of approximately half of a conventional gear honing tool, FIGS. 2 and 3 are explanatory diagrams showing conventional gear honing processing performed using the tool shown in FIG. 4 to 8 show an embodiment of the present invention, in which FIG. 4 is a vertical sectional view of approximately half of the tool, and FIG. 5 is a vertical cross-sectional view of approximately half of the tool.
-v' line sectional view, FIG. 6 is a perspective view of the entire tool, FIG. 7 is a perspective view showing the operating state of each horn, and FIG. 8 is an explanatory view of the operating state. 2... Workpiece, 10... Entire tool, 11-14...
- 1st to 4th horns, 17.18... 1st. Bolt and nut supplying the third horn, 19...Long size formed on the third horn, 20...Second. Fixing pin for connecting the fourth horn, 21... Pressing plate, 22.23.
...Male screws and nuts that tighten the first to fourth horns together), 24.24'...Spring storage chamber, 25°25'.
・Compression spring. Agent Patent Attorney Toshiyuki Usuda 1 Figure VJ 2nd VJJ Mouth 4 Mouth 5 Figure/7 11 Hanawa δ Figure

Claims (1)

[Claims] A plurality of gear-shaped horns are combined in the axial direction, a spring tube is compressed between adjacent horns, and the adjacent horns are biased to rotate in opposite directions in the circumferential direction, thereby creating a phase difference in the circumferential direction. A gear honing tool characterized by being configured to produce.