JPH07214422A - Gear honing device - Google Patents

Abstract

PURPOSE:To prevent deformation of a grinding wheel before it is mounted on a grinding wheel head and suppress deflection take-out amount after the grinding wheel head is mounted by providing a metallic ring to be attached on an inner peripheral face of the grinding wheel head in an outer peripheral section of a tooth grinding wheel for honing. CONSTITUTION:A metallic ring 13 which restricts deformation into an outer peripheral side of an inner tooth grinding wheel for honing 3 is integrated on the inner tooth grinding wheel for honing 3 in advance so that roundness of the inner tooth grinding wheel for honing 3 and parallelism of its side are not easily changed before the grinding wheel 3 is mounted on a grinding wheel head 4. The inner tooth grinding wheel for honing 3 is fixed on the grinding. wheel head 4 and the change of grinding wheel ends. Since the metallic ring 13 is fitted and arranged in an outer peripheral section of the fixed inner tooth grinding wheel for honing 3, inner teeth are not deformed even after the grinding wheel 3 is mounted on the grinding wheel head.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear honing device for honing the external teeth of an external gear, and more particularly to a gear honing device capable of shortening the replacement time of an internal tooth grindstone for honing.

[0002]

2. Description of the Related Art Generally, in a gear honing device, in order to perform honing on the tooth surface of an external gear, a honing internal tooth grindstone having internal teeth is attached to the inner peripheral surface of an annular grindstone holding head. Is driven to rotate together with the external gear meshed with the internal tooth grindstone for honing, and the tooth surface and the tooth tip are subjected to honing.

[0003]

However, in the above-mentioned conventional gear honing device, the honing internal tooth grindstone, which is relatively easily deformed, is mounted directly on the inner peripheral surface of the grindstone holding head. If there was an error in the circularity of the tooth grindstone or the parallelism of its side surfaces, the shape of the internal teeth could be affected after the mounting. For this reason, after mounting, it is necessary to shake out by the amount of the deformation, and normally the shakeout amount is φ0.5 to 1.5 mm. In view of the above problems, it is an object of the present invention to provide a gear honing device that can replace an internal tooth grindstone for honing in a short time.

[0004]

In order to achieve the above object, the present invention is a gear honing for honing an external gear by mounting an internal tooth grindstone for gear horning on an inner peripheral surface of an annular grindstone holding head which is rotationally driven. In the apparatus, a metal ring attached to the inner peripheral surface of the grindstone holding head is provided on the outer peripheral portion of the honing internal tooth grindstone.

[0005]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of a gear honing device. In this gear honing apparatus, a moving table 2 is mounted on a base 1, and a grinding wheel holding head 4 holding a honing internal tooth grinding wheel 3 is rotatably attached to the moving table 2. In addition, the base 1 has an external gear W, which is a workpiece.
However, the arbor 5 fitted in the center hole is rotatably supported on a support base (not shown) so that it is detachably mounted.

The moving table 2 is driven by a motor 6 as shown in FIG.
While moving to the left in the middle to give the cutting feed to the external gear W, and moving to the right to separate the external gear W and the honing internal tooth grindstone 3 from each other, the motor 7 causes the orthogonal cross to the paper surface in FIG. The external gear W can be positioned in a honing position and a demounting position, respectively.

The grindstone holding head 4 is annular and has a structure in which a bearing 8 is arranged on the outer periphery as shown in FIG. The outer peripheral bearings 8 are a pair of bearings facing each other at a predetermined interval, are fixed to the side wall 2a standing upright from the moving base 2, and the outer teeth of the sprocket 9 formed on the outer periphery of the grindstone head 4 in the space between them. 9a is located. A chain 11 is laid between the outer teeth 9a of the sprocket 9 and the main shaft of the motor 10 so that the power of the motor 10 can be transmitted. The rotation of the grindstone holding head 4 can be stopped at a predetermined position by detecting a detection part such as a hole formed on the side surface of the grindstone holding head 4 with a sensor (not shown). Further, the engaging groove 1 is formed on the inner peripheral portion of the grindstone holding head 4.
2 is formed, and the engaging groove 15 of the metal ring 13 described below is formed.
The key holes are configured with and.

A metal ring 13 which is less likely to be deformed than the honing internal tooth grindstone 3 is disposed on the outer peripheral portion of the honing internal tooth grindstone 3. Metal ring 13
An engaging groove 15 is formed at a predetermined position on the outer peripheral portion of the inner tooth of the honing inner tooth grinding wheel 3, and as described above,
A key hole is formed with the engaging groove 12 of the grindstone holding head 4, and the key 16 is inserted into this key hole so that the positions of both are regulated in the rotational direction. Further, the first mounting plate 14 is screwed to the both sides of the metal ring 13 at a predetermined pitch in the circumferential direction, and the honing internal tooth grindstone 3 is held by the first mounting plate 14 so that they are integrated. Has become. When the detecting portion is detected by the sensor and the grindstone holding head 4 is stopped, the internal teeth of the honing internal tooth grindstone 3 are accurately meshed with the external gear W positioned in the rotational direction by the positioning means (not shown). You can do it.

As described above, the honing internal tooth grindstone 3 and the metal ring 13 are placed in a factory or the like in an integrated state, and the both are integrated into a gear honing device. It is supposed to be detached. Therefore, when the honing internal tooth grindstone 3 is prevented from being deformed when it is mounted on the grindstone holding head 4, the roundness and the parallelism of both side surfaces are not disturbed.

The metal ring 13 is held on the grindstone holding head 4 by a second mounting plate 17 screwed to the grindstone holding head 4. The honing internal tooth grindstone 3 can be exchanged together with the metal ring 13 by attaching and detaching the second mounting plate 17 to and from the grindstone holding head 4.

In the gear honing device having the above-described structure, the honing of the external gear W is performed in the same manner as in the prior art by engaging the external teeth of the external gear W with the internal teeth of the honing internal tooth grindstone 3 and driving the motor 10. This is performed by rotating the internal tooth grindstone 3 and rotating the external gear W together.

If the honing internal tooth grindstone 3 becomes unusable due to damage to the internal teeth or the like, it is replaced as follows. That is, the motor 7 is driven to move the moving table 2 in the direction orthogonal to the paper surface of FIG. 1, and the external gear W is removed from the support table. Then, by loosening the screw and removing the second mounting plate 17 from the grindstone holding head 4, the honing internal tooth grindstone 3 is removed together with the metal ring 13.

Next, a new honing internal tooth grindstone 3 is attached. The honing internal tooth grindstone 3 is previously integrated with a metal ring 13 for restraining its deformation to the outer peripheral side. The circularity and parallelism of the side surfaces of the honing internal tooth grindstone 3 are unlikely to change before mounting on the holding head 4.

Thereafter, the grindstone holding head 4 and the engaging groove 15 formed on the outer peripheral portion of the metal ring 13 are positioned, and the key 16 is inserted into the formed key hole to regulate the positional relationship between the two. (2) The honing internal tooth grindstone 3 is fixed to the grindstone holding head 4 by screwing the mounting plate 17 to the grindstone holding head 4.

In the honing internal tooth grindstone 3 fixed to the grindstone holding head 4 in this manner, since the metal ring 13 is fitted and arranged on the outer peripheral portion, the internal teeth do not deform even after the mounting. Moreover, since the internal teeth of the honing internal tooth grindstone 3 and the detecting portion of the grindstone holding head 4 are set in a fixed positional relationship, the motor 10 is detected at the time when the sensor detects the detecting portion of the grindstone holding head 4. If is stopped, the internal teeth of the honing internal tooth grindstone 3 can be accurately positioned at a desired position (indexing original position).

Then, a dress grindstone (not shown) is attached in place of the external gear W, and the honing internal tooth grindstone 3 is meshed with this dress grindstone to perform shakeout after replacement. In this case, since the metal ring 13 is arranged on the outer peripheral portion of the honing internal tooth grindstone 3 as described above, the amount of runout can be significantly reduced and the workability is improved. Specifically, in the present embodiment, the amount of run-out was φ0.5 to 1.5 mm, but in the present embodiment, it was possible to reduce it to φ0.01 to 0.03 mm. Further, if the dress grindstone is replaced with an unprocessed external gear W and the honing internal tooth grindstone 3 is positioned at the indexing original position, the subsequent honing can be smoothly resumed. The honing internal tooth grindstone 3 and the metal ring 13 may be integrally formed.

[0017]

As is apparent from the above description, according to the gear honing device of the present invention, the metal ring is attached to the outer peripheral portion of the honing internal tooth grindstone, so that it is mounted on the grindstone holding head. As a result, it is possible to suppress the amount of shakeout after mounting on the grindstone holding head with almost no deformation before, and as a result, it is possible to shorten the replacement time and significantly improve the work efficiency.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a gear honing device according to an embodiment.

FIG. 2 is a sectional view taken along line II-II of FIG.

[Explanation of symbols]

3 ... Internal tooth grindstone for honing, 4 ... Grindstone holding head, 13
… Metal ring.

[Procedure amendment]

[Submission date] February 14, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

Claims (1)

[Claims] 1. A gear honing device in which an internal tooth grindstone for gear honing is mounted on an inner peripheral surface of an annular grindstone holding head which is rotationally driven, and the outer peripheral portion of the honing internal tooth grindstone is provided in the gear honing device for honing an external gear. A gear honing device comprising a metal ring attached to the inner peripheral surface of the grindstone holding head.