JP3096194U - Mounting structure for disc whetstones, etc. - Google Patents

Abstract

(57) [Problem] To provide a fixed gap between a tightening nut and a flange as a method for reducing vibration during use of a disk grindstone, and substantially fix the cushion material and the disk grindstone therebetween. There is something. At this time, it is necessary to provide a rotation stopping means between the disc grindstone and the tightening nut or flange, but in this method the mounting part is gradually deformed due to the impact on the rotation stopping part, and the center positioning of the disc grindstone mounting is gradually performed. There is a case where a problem of shifting occurs. SOLUTION: A rotation stopper is provided in a substrate mounting hole of a disk grindstone, a step for center positioning is separately provided, a screw groove for directly screwing into a rotating tool is provided in a central through hole, and a tightening head is provided. A flange-shaped bolt with a shape and dimensions fitted to the step of positioning the substrate center is provided with a convex portion that fits in accordance with the shape of the substrate mounting hole of the disc grindstone, and the shrinkage of the cushion material is regulated to a certain extent. A cushion material is stuck to the stepped nut, a disc grindstone is passed through the bolt, and the nut is tightened to integrate them.

Description

[Detailed description of the invention]     [0001]     [Technical field to which the invention belongs]   The present invention is intended to remove disk grinding wheels used with rotating tools such as disk grinders. Mounting structure.     [0002]     [Prior art]   FIGS. 1, 2 and 3 are those presented in Japanese Utility Model Application 2002-001492. Has a function to reduce vibration during use, and integrates those components It relates to the structure of a disc whetstone. When using the disc whetstone according to this invention Vibration reduction function and the convenience of easy installation and removal. Has both. In this invention, the center positioning at the time of mounting the disk whetstone, so-called The centering is performed by the mounting portion 8 having the projection 8 of the rotation stopper shown in FIG. 2 and the rotation stopper shown in FIG. 9 (6 in FIG. 1).     [0003]     [Patent Document 1] JP-A-11-347929     [Patent Document 2] Memoir 3088708     [0004]     [Problems to be solved by the invention]   In the case of the disk whetstone mounting structure shown in Jpn. The anti-rotation means also serves as the centering of the disc whetstone. In the case of performing heavy grinding work, as the work proceeds, the convex portion 8 of the rotation stopping means and the substrate removal are removed. The attachment holes 9 hit each other, and wear and deformation gradually occur. Anti-rotation hand The step projection 8 and the board mounting hole 9 are worn or deformed, resulting in a large gap between the fitting portions. If this happens, the centering cannot be performed accurately, so eccentricity cannot maintain the balance during rotation. In some cases. [0005]   The present invention has been made in view of such a point, and reduces vibration during use of a disc grinding wheel. Combines the reduced function with the convenience of easy installation and removal Wear and deformation of the rotation stop means during heavy grinding work. The aim is to keep the centering accurate.     [0006]     [Means for Solving the Problems]   As shown in FIG. 4, the rotation of the disc grinding wheel having the structure of Jitsuroku No. 3088708 The diameter of the head 15 of the flanged tubular bolt 2 above the board mounting hole 9 for stopping A step 12 with a diameter about 0.1mm larger than the center and the same I can. In the center through hole, as shown in FIG. And the flanged tubular bolt 2 provided with a thread groove 7 for screwing directly into a rotary tool. A convex portion 8 fitted to fit the shape of the mounting hole of the disc whetstone is provided, as shown in FIG. With a step 14 for restricting the amount of shrinkage of the cushion material 4 7 and the cushioning material 4 shown in FIG. These are integrated by tightening a grinding wheel with a nut. At this time, the step provided on the substrate The head 15 of the bolt fits into the difference 12 (13 in FIG. 5), Positioning, so-called centering, can be performed accurately. Heavy grinding work in this state Even if it goes, it will always collide with each other like the rotation stop means Wear and deformation of the step 12 and the bolt head 15 due to the small force. Rarely occurs. In addition, the shrinkage allowance of the cushion material is disclosed in JP-A-11-347929. Similarly, a value that can minimize vibration is used.   [0007]   In addition to using the head 15 of the bolt 2 as a method of centering, as shown in FIG. Method and illustration of providing a step 16 as a centering means between a nut head 15 and a projection 8 The same effect can be obtained by providing a step 17 as a centering means on the nut 3 as shown in FIG. Is obtained.   [0008]     [Effect of the invention]   As with the real record No. 3088708, the function to reduce vibration and the installation work are performed quickly. It can be easily and easily performed, but it can be installed even in heavy grinding work. The work can be performed without abrasion or deformation of the center positioning portion.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a mounting structure of a disk grindstone according to Japanese Utility Model No. 3088708. FIG. 2 is a perspective view of a flanged tubular bolt according to Japanese Utility Model No. 3088708. FIG. 3 is a perspective view of a disk grindstone according to Japanese Utility Model No. 3088708. FIG. 4 is a perspective view of a disk grindstone having the structure of the present invention. FIG. 5 is a sectional view showing the structure of the present invention. FIG. 6 is a perspective view of a stepped nut according to Japanese Utility Model No. 3088708. FIG. 7 is a perspective view of a cushion material. FIG. 8 is a sectional view showing the structure of the present invention. FIG. 9 is a sectional view showing the structure of the present invention. [Description of Signs] 1 Disc grinding stone 2 Flange tubular bolt 3 Nut 4 Cushion material 5 Rotating shaft 6 Detent fitting 7 Screw groove 8 Detent projection 9 Detent mounting hole 10 Chip 11 Disc grinding stone 12 Step 13 Center positioning fit 14 Step 15 Bolt head 16 Step 17 Step

Claims (1)

The present invention relates to a mounting structure of a disk grindstone used by being mounted on a rotating shaft of a rotary tool such as a disk grinder, and the like. A flanged tubular bolt with a means for screwing the tightening nut and a means for screwing directly into the rotating shaft, a disk grindstone provided with a rotation stopping means and a centering means in the center mounting hole part, a rubber packing, etc. A disk grindstone having a mounting structure in which a bolt, a disk grindstone, a cushion material, and a nut are integrated by tightening with a tightening nut having a means for regulating the tightening of the cushion material through the cushion material in order.