JPH02243264A - Fitting device for grindstone - Google Patents

Abstract

PURPOSE:To remove the side face deflection of a grindstone by forming an annular elastic deflection part between a slit in the circumferential direction and a grindstone abutting face, and fitting a bolt freely movable in a spindle axial direction to a flange main body in order to press this deflection part to the grindstone abutting face side while facing it to each slit. CONSTITUTION:In the case that the forming accuracy of a grindstone 1 is bad, the grindstone 1 is fitted by being inclined to the shaft center of a spindle shaft 2 and a side face deflection is generated according to the rotation of the spindle shaft 2, the upper bolt 6 and lower bolt 6' screwed with the flange main body of each of flange assembly bodies 4, 4' are advanced and the lower bolt 6 and upper bolt 6' are retreated. Thus the annular elastic deflection parts 7, 7' of each flange assembly body 4, 4' are deflected to the grindstone 1 side, the grindstone 1 is revolved in the left round and the side face deflection of the grindstone 1 is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a grindstone mounting device for fixing a grindstone to a spindle shaft, and particularly to a grindstone mounting device for fixing a grindstone to a spindle shaft.

The present invention relates to a grindstone mounting device that can compensate for wear.

[Conventional technology]

A conventional grindstone mounting device will be explained using FIG. 2.

FIG. 2 is a sectional view of a main part of an example of a conventional grindstone mounting device.

In FIG. 2, 11 is a grindstone, 12 is a spindle shaft, and the grindstone 11 is connected to a solid grindstone sleeve
and the solid tightening is held by the flange 14,
This is tightened using the nut 15 on the spindle shaft 12.
I was trying to fix it to.

Note that related devices of this type include, for example, Japanese Utility Model Publication No. 52-21673.

[Problem to be solved by the invention]

The conventional grindstone mounting device described above has poor forming accuracy of the grindstone, and can be used when the grindstone is installed at an angle to the spindle axis, or when the thickness of the grindstone changes along the circumferential direction. The rotation of the spindle shaft caused the grindstone to run out laterally. This side runout causes deterioration of the perpendicularity of the groove sides and errors in groove width dimensions when grooving or cutting is performed using a thin grindstone. Also,
When the side surface of the grinding wheel wears out, correction in the thickness direction of the grinding wheel cannot be made, so there is also the problem that the life of the grinding wheel cannot be extended.

The present invention eliminates the problems of the prior art described above.

The object of the present invention is to provide a grindstone mounting device that can eliminate side runout of the grindstone and correct wear in the thickness direction of the grindstone.

[Means for Solving the Problems] In order to solve the above problems, the configuration of the grindstone mounting device according to the present invention is such that both sides of an annular grindstone are held between the grindstone contact surfaces of a cylindrical flange, In a grindstone mounting device in which this is fixed to the spindle shaft using a nut, each cylindrical flange is provided with a plurality of slits along the circumferential direction, and a gap between the slit and the grindstone contact surface is provided. is made into an annular elastic flexible portion, and the annular elastic flexible portion can be pressed toward the grinding wheel contacting surface side facing each of the slits. A flange assembly is formed by attaching a bolt movable in the axial direction of the spindle to a flange body facing the annular elastic flexible portion.

More details are as follows.

The above purpose is to provide a long slit in the circumferential direction in a cylindrical flange that holds the grinding wheel, and to make the annular elastic bending part between the slit and the grinding wheel locally elastically deformable in parallel to the spindle axis direction. This is achieved by

[Effect]

The annular elastic bending part of the cylindrical flange that holds the grinding wheel has a structure in which it is locally bent in a direction parallel to the spindle axis by bolts (this is called a flange assembly). By pressing and bending the annular elastic bending portion on the inclined side with a bolt, side runout of the grindstone can be removed.

〔Example〕

Hereinafter, the present invention will be explained by way of an example using one drawing.

FIG. 1 is a partially sectional perspective view showing a grindstone mounting device according to a first embodiment of the present invention, and FIGS. 3 to 5 illustrate the operation of the grindstone mounting device according to FIG. Figure 3 is a side view when lateral runout occurs in the grindstone, Figure 4 is a side view showing the state in which the lateral runout has been removed, and Figure 5 shows the state in which wear in the thickness direction of the grindstone has been corrected. FIG.

The configuration of this grindstone mounting device will be explained with reference to FIG. 5, which is clamped by a nut 3 and fixed to the spindle shaft 2 by a nut 3.

The cylindrical flange 4.4' is provided with four slits 5.5' at equal intervals along the circumferential direction, and a circular gap is formed between the slits 5.5' and the grindstone contact surfaces 4a, 4a'. As well as annular elastic flexible portions 7, 7'.

Facing the center of the length of each of the slits 5.5',
A bolt 6.6' that is movable in two directions of the spindle axis and that can press the annular elastic bending part 7.7' toward the grindstone contact surfaces 4a and 4a' is used as the annular elastic bending part 7.7'. This is a flange assembly that is attached to opposing flange bodies 4h and 4b'.

The operation of the grindstone mounting device having the flange assembly 4.4' constructed in this way will be explained.

For example, as shown in Fig. 3, the forming precision of the grinding wheel 1 was poor, and the grinding wheel 1 was installed at an angle with respect to the axis of the spindle shaft 2, and as the spindle shaft 2 rotated, lateral runout Δ occurred. In this case, as shown in FIG.
If the lower bolt 6 and upper bolt 6' are moved forward and the annular elastic bending portions 7.7' of the flange assembly 4.4' are respectively bent toward the grinding wheel 1, the grinding wheel 1 is rotated counterclockwise in the figure, and the side deflection Δ can be easily removed.

Furthermore, if wear occurs in the thickness direction of the grinding wheel, as shown in FIG. 5, the upper and lower bolts 6 of the flange assembly 4 are advanced, and the upper and lower bolts 6 of the flange assembly 4' are removed.

By retracting the lower bolt 6' and bending the annular elastic bending part 7 into a concave shape and the annular elastic bending part 7' into a convex shape, the apparent width of the grinding wheel can be increased by Δ'. This makes it possible to compensate for wear in the thickness direction of the grinding wheel.

According to the embodiment described above, by moving the pole 6.6' forward or backward, it is possible to locally deflect any position of the grinding wheel 1 in the axial direction. It is possible to remove the grinding wheel and correct wear in the thickness direction of the grinding wheel, which has the effect of enabling highly accurate groove machining.

Another embodiment will be described.

FIG. 6 is a side view showing a grindstone mounting device according to a second embodiment of the present invention.

In FIG. 6, the same parts as in FIG. 1 are denoted by the same numbers. and flange assembly 41.4.4
'An annular elastic deflection part.

The 7-rank main body 4A is formed by making the slits 5 (see FIG. 1) continuous with each other along the circumferential direction.

The annular spacers 7A and 7A' are separated from the spacer 4b'.

With this configuration, the annular spacer 7A.

By pushing and pulling the bolts 6 and 6' facing any position of 71', the grindstone 1 can be tilted by any desired amount, or conversely, the inclination can be removed. Compared to the first embodiment in which the portions 7.7' are elastically deformed, there is an advantage that a larger displacement can be taken.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to provide a grindstone mounting device that can eliminate side runout of the grindstone and correct wear in the thickness direction of the grindstone.

[Brief explanation of drawings]

FIG. 1 is a partially sectional perspective view showing a grindstone mounting device according to a first embodiment of the present invention, FIG. 2 is a sectional view of essential parts showing an example of a conventional grindstone mounting device, and FIGS. 3 to 5 are , which explains the operation of the grindstone mounting device according to FIG. 1, FIG. 3 is a side view when side runout occurs in the grindstone, and FIG. 4 is a side view showing a state in which the side runout has been removed. Figure 5 is a side view showing the state in which wear in the thickness direction of the grinding wheel has been corrected, and Figure 6 is
FIG. 7 is a side view showing a grindstone mounting device according to a second embodiment of the present invention. 1・・・・・・・・・・・・・・・・・・・・・・・・
・・・Whetstone 2・φ・Shaft・・・・・・・Dark・Shaft・Trout・・・9・−Spindle shaft 3・・・・・・・・・・
····································································································· Tighten nuts: 4.4’, 44,4A’…7 rank assembly 5.5
′・・・・・−・・〜・・・・・・・・・・Slit 6.6′・・・・・・・・・～・・・・・・・・・・・・・Bolt 7.7 ′・・・・・・・・・−・・・・・・・・・−・・
Annular elastic bending portion 7A, 7Δ ・・・・・・・・・・・・
-... Annular spacer 41 figure porridge 2 figure 5tU4 power figure 5 figure 6

Claims (1)

[Scope of Claims] 1. In a grindstone mounting device in which both sides of an annular grindstone are held between grindstone contact surfaces of a cylindrical flange and fixed to a spindle shaft with a tightening nut, each The cylindrical flange is provided with a plurality of slits along the circumferential direction, and the space between the slits and the grinding wheel contact surface is made into an annular elastic bending part, and facing each of the slits, the annular elastic bending part is formed. A flange assembly is formed by attaching a bolt movable in the spindle axial direction that can press the flexible part toward the grinding wheel contact surface side to the flange body facing the annular elastic flexible part. Grinding wheel mounting device. 2. The grindstone mounting device according to claim 1, wherein the annular elastic flexible portion is formed into an annular spacer separated from the flange main body by making slits along the circumferential direction continuous with each other.