JPH052282Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a balancing mechanism for a grinding wheel.

<Prior art> Conventionally, as shown in FIG. 3, a guide groove 1a is formed in the grinding wheel flange 1,
A plurality of balance pieces 2 are fitted into the grinding wheel flange 1, the position of the balance pieces 2 is adjusted so that the grinding wheel 3 is kept in balance, and at that position, the balance pieces 2 are tightened into the guide groove 1a of the grinding wheel flange 1. There is.

<Problems to be solved by the invention> However, in the conventional device described above, the positions of the plurality of balance pieces 2 are changed many times to achieve balance, so it is necessary to tighten and loosen the screws many times. However, the drawback was that it was difficult to operate and it took time to balance.

<Means for Solving the Problems> The present invention has been made to solve such problems, and includes forming a notch on one side of the grinding wheel sleeve that holds the grinding wheel across the center axis, and A recess is formed at a position opposite to the notch forming position across the center axis of the grinding wheel sleeve to generate a weight imbalance larger than the unbalance caused by the notch on the opposite side across the center axis. However, a balance weight having a weight capable of correcting unbalance is attached to this recess.

<Operation> The operator selectively attaches one of a plurality of balance weights with different weights prepared in advance to the recess,
Balance the weight. If the weight cannot be perfectly balanced, replace the balance weight with another one to achieve a balanced state.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIG. 1, 11 is a rotating shaft, 12 is a grindstone sleeve, and 13 is a grindstone flange. This grinding wheel flange 13 is fixed to the grinding wheel sleeve 12 via a tightening bolt 14, and is adapted to hold the grinding wheel 10 therebetween.

On the outer surface of the grindstone sleeve 12, a circular bottomed hole is formed as a notch 15 on one side with the center axis of the grindstone sleeve 12 in between.
A circular recess 16 is formed on the side surface of the grindstone sleeve 12 at a location facing the notch 15 across the center axis of the grindstone sleeve 12. The amount of weight imbalance imparted by the notch 15 is set to be larger than the maximum value of the weight imbalance of the grinding wheel 10,
The amount of weight unbalance provided by the shape of 6 is set to be larger than the amount of unbalance provided by the notch 15. Therefore, when the balance weight 17 described later is not attached, the recess 1
6, a weight shift larger than the maximum unbalance amount caused by the grinding wheel 10 occurs.

A threaded hole 18 for mounting a balance weight is formed in the center of the bottom surface of the recess 16, and the balance weight 17 is mounted by a mounting bolt 19 that is screwed into this threaded hole 18.

The balance weight 17 has a circular shape with a thickness thinner than the depth of the recess 16 and a diameter smaller than the diameter of the recess 16, and a recess into which the head of the mounting bolt 19 fits is formed in the center. A plurality of balance weights 17 with different diameters are prepared in advance, and the operator selects one of the plurality of balance weights 17 and attaches it to the recess 16.

Next, a description will be given of a balancing operation using the balancing mechanism configured as described above.

First, when attaching the grinding wheel 10 to the grinding wheel sleeve 12, the clearance formed between the inner circumferential surface of the grinding wheel 10 and the outer circumferential surface of the grinding wheel sleeve 12 is located at a position corresponding to the portion where the notch 15 is formed. That is, an unbalance mark indicating the unbalanced position of the grinding wheel itself is displayed on the grinding wheel, and the grinding wheel 10 is attached to the grinding wheel sleeve 12 so that this mark is at the top.

After this, one of the plurality of balance weights 17
Select one, attach it to the recess 16, place it on a balance table, and check the balance.

If the balance is achieved by the selectively attached balance weight 17, the balancing work is completed, but if the balance cannot be achieved, the balance weight 17 is replaced with one of a different weight to find the best balance. state.

Note that the balance weight 17 may be attached by integrally protruding a screw shaft from the back surface of the balance weight 17.

Further, the cutout portion 15 may be formed on the outer peripheral surface of the grindstone sleeve 12.

<Effect of the invention> As described above, in the present invention, a notch is formed on one side across the center axis of the grinding wheel sleeve that holds the grinding wheel, and the notch is formed across the center axis of the grinding wheel sleeve. A recess is formed at a position opposite to the forming position to generate a weight unbalance larger than the unbalance generated by the notch on the opposite side of the central axis, and a weight capable of correcting the unbalance is formed in the recess. Since the balance weight is attached, the direction of unbalance is determined by the direction in which the recess is formed, and the balance can be corrected simply by selecting and attaching a balance weight with a weight that can correct the unbalance to this recess. Therefore, the balance can be achieved by replacing the balance weight several times, which has the advantage that the balancing work can be done in a short time.

In addition, since a notch is formed on one side of the grinding wheel sleeve across the center axis, balance can be maintained with a balance weight that is large enough not to protrude from the recess. It has the advantage that sexuality is not inhibited.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a grindstone sleeve equipped with a balancing mechanism showing an embodiment of the present invention, and Fig.
FIG. 3 is a front view of a grindstone flange showing a conventional mechanism. 10... Grindstone sleeve, 15... Notch, 16
...Concavity, 17...Balance weight, 18...
Screw hole, 19...Mounting bolt.

Claims (1)

[Scope of utility model registration request] A grinding wheel balancing mechanism that corrects and balances the weight imbalance of the grinding wheel,
A notch is formed on one side across the central axis of the grinding wheel sleeve that holds the grinding wheel, and the notch is generated by the notch at a position opposite to the notch forming position across the central axis of the grinding wheel sleeve. The grinding wheel is characterized in that a recess is formed to generate a weight unbalance larger than the unbalance amount on the opposite side of the central axis, and a balance weight having a weight capable of correcting the unbalance is attached to the recess. car balancing mechanism.