JPH0625341U - Substrate of rotary grinding and polishing whetstone and rotary grinding and polishing whetstone using the substrate - Google Patents

Abstract

(57) [Summary] [Purpose] The peeling strength of the abrasive cloth paper that is adhesively fixed to the substrate is enhanced, the adhesion angle of the abrasive cloth paper can be freely selected, and the heat dissipation of grinding and polishing heat is improved. To provide a substrate capable of elastically pressing a polishing cloth paper against an object to be ground, and a rotary grinding wheel using the substrate. [Structure] A plurality of strip-shaped abrasive cloths are tiled and bonded in a radial direction to a substrate provided with a disk-shaped adhesive surface while applying an appropriate angle to the abrasive cloths to be adhered. In order to bond and fix the abrasive cloths at their bases while keeping them in non-contact with each other, a plurality of saw-tooth adhesive grooves are formed radially with an appropriate angle in the circumferential direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary grinding and polishing wheel, and an improvement of a substrate for adhering and fixing a polishing cloth paper, which is a constituent of the wheel, when manufacturing the wheel.

[0002]

[Prior art]

 FIG. 4 shows an example of a rotary grinding and polishing whetstone that is commonly used at present in a cross-sectional state of a main part. In FIG. 3, the disc-shaped substrate 1 is made of plastic or is formed of an offset grindstone or the like which is obtained by coating a resin on an abrasive and then solidifying the resin. An offset recess 2 is formed in the center of the substrate 1, and a mounting hole 3 for fixing the drive shaft of the grinder is formed in the center of the offset recess 2.

The ring-shaped surface of the substrate 1 is an adhesive surface 4 that is formed flat, and a plurality of strip-shaped abrasive cloth papers 5 are formed on the adhesive surface 4 with the grinding surface as the surface. Then, a part of them are overlapped and radially fixed by an adhesive 6.

[0004]

[Problems to be solved by the device]

 However, in the conventional rotary grinding wheel, the adhesive surface 4 of the substrate 1 shown in FIG. 3 is formed into a flat surface, and the polishing cloth paper 5 is planarly fixed to the flat surface with an adhesive 6 on the flat surface. It's just that. Therefore, since the seed grindstone is used in a severe manner in which it is strongly pressed against the object to be ground while rotating at a high speed, there is a risk of peeling with the abrasive cloth paper 5 having a small adhesive area. Further, since the polishing cloth papers 5 are overlapped with each other and the grinding surface constituted by these polishing cloth papers 5 is fixed, elasticity is poor, and therefore a good polishing surface cannot be obtained. Further, the planar adhesion of the polishing cloth paper 5 cannot sufficiently dissipate the generated grinding and polishing heat.

The present invention has been made in view of the above problems. It is possible to enhance the peeling strength, to select a desired bonding angle of the abrasive cloth paper, to improve the heat dissipation property of the grinding and polishing heat, An object of the present invention is to provide a rotary grinding / polishing grindstone and a substrate for the grindstone which can elastically and strongly press against a grinding object.

[0006]

[Means for Solving the Problems]

 The substrate of the rotary grinding wheel according to the present invention, which solves the above-mentioned problems, is a substrate of the rotary grinding wheel provided with a disc-shaped adhesive surface for bonding a plurality of strip-shaped abrasive cloth papers in a radial and tile-like manner. To give an appropriate angle to the abrasive cloth paper to be adhered and to bond and fix the cloth paper at the base while keeping the cloth paper in a non-contact state, give an angle of inclination to the adhesive surface in the circumferential direction. It is characterized in that a plurality of sawtooth-shaped adhesive grooves are formed radially.

In addition, the rotary grinding wheel according to the present invention is a rotary grinding wheel in which a plurality of strip-shaped abrasive cloth papers are radially and tile-like bonded to the bonding surface of a substrate formed into a disk shape. , A plurality of sawtooth-shaped adhesive grooves are formed radially on the adhesive surface of the substrate, with an inclination of an appropriate angle in the circumferential direction, and the inclined surface of the sawtooth-shaped adhesive grooves is polished to match the angle. The feature is that they are bonded and fixed at their bases while keeping them in a non-contact state.

As described above, when the bonding surface of the substrate is constituted by the saw-tooth bonding grooves, the entire groove serves as a bonding portion and the bonding area is expanded, so that the peel strength of the abrasive cloth paper is enhanced. Also, since the polishing cloth paper can be adhesively fixed to this groove according to the angle of the inclined surface set in the groove, it is possible to freely select the angle of the polishing cloth paper, which is the characteristic of this seed stone. Elasticity can be easily adjusted. Further, when the polishing cloth paper is adhered and fixed to the inclined surface, gaps depending on the angle are formed between the polishing cloth papers, and the polishing cloth papers can be kept in a non-contact state, so that the heat dissipation property of the grinding and polishing heat becomes good.

[0009]

【Example】

 The present invention will be described below with reference to illustrated embodiments. In the figure, 10 is a substrate of a rotary grinding and polishing grindstone according to the present invention, which is partially shown, but is formed into a disc shape as a whole. The material of the substrate 10 is not different from the substrate used in the conventional rotary grinding and polishing grindstone. In the present invention, the surface of the substrate 10, that is, the surface to which a plurality of strip-shaped polishing cloth papers 11 are bonded is constituted by a plurality of saw-tooth bonding grooves 12.

The saw-tooth adhesive grooves 12 are used to adhere and fix the abrasive cloth paper 11 at the base thereof, each of which has an inclined surface 13 at an appropriate angle in the circumferential direction and is formed continuously in a radial direction. Is made. Therefore, the adhesive grooves 12 hold the same angle of the inclined surface 13, and the groove width becomes wider as it goes in the radial direction. The entire surface of the inclined surface 13 serves as an adhesive surface, and the inclination angle thereof is in the range of 30 ° to 60 ° because it is necessary to maintain the elasticity and the non-contact state of the abrasive cloth paper 11 adhered thereto. preferable.

In FIG. 2, an example of a rotary grinding wheel 20 manufactured by using the above substrate 10 is shown as a sectional view of a main part. The figure shows an example in which the angle of the inclined surface 13 of the sawtooth-shaped adhesive groove 12 formed on the adhesive surface of the substrate 10 is 30 °. The base of the abrasive cloth paper 11 is adhered and fixed to the entire inclined surface 13 of each serrated adhesive groove 12 with an adhesive 14 at an angle of 30 °. The polishing cloths 11 appear to overlap each other on the surface, but as is clear from the cross-sectional view of FIG. 2, the inclined surfaces 13 maintain a non-contact state with each other at intervals. This non-contact state imparts elasticity to each of the abrasive cloth papers 11 so that they can be pressed and deformed.

Therefore, when the rotary grinding wheel 20 is strongly pressed against the object to be ground at a high speed, the all-grinding cloth paper 11 adhered and fixed at an appropriate angle is attached to the object to be ground by its elasticity. Since it has a high flexibility in rotating elastic contact, the polishing performance for the object to be ground is greatly improved. When the pressure is applied to the object to be ground, the tips of the abrasive cloth 11 overlap each other, but the non-contact state is maintained at the intermediate portion, so this non-contact portion functions to release the grinding and polishing heat. Therefore, the heat dissipation effect during grinding is also improved. Further, even if the object to be ground is strongly pressed under high speed rotation, the base of each grinding cloth paper 11 is adhered and fixed to the entire inclined surface 13 with the adhesive groove 12 by the adhesive 14, so that the adhesion area is enlarged. Therefore, the peel strength performance is also improved. Further, by changing the angle of the inclined surface 13, it is possible to freely change the adhesion angle of the abrasive cloth 11 and adjust the elasticity of the abrasive cloth 11 according to this angle.

FIG. 3 shows an embodiment in which the abrasive cloth paper 11 is adhesively fixed to the inclined surface 13 of the serrated adhesive groove 12 having an angle of 60 °. Also in this embodiment, the same effect as in the previous embodiment can be obtained.

[0014]

[Effect of device]

 As described above, according to the present invention, the entire sawtooth-shaped adhesive groove radially formed by imparting an appropriate angle of inclination in the circumferential direction serves as an adhesive portion to widen the adhesive area, so that the high speed is achieved. It is possible to enhance the peel strength of the abrasive cloth paper that is strongly pressed against the object to be ground under rotation. Also, since the polishing cloth paper can be fixedly attached to this groove according to the angle of the inclined surface set in the bonding groove, it is possible to freely select the angle of the polishing cloth paper, which is a characteristic of this type of grindstone. The elasticity of the polishing cloth can be easily adjusted. Further, when the polishing cloth paper is adhered and fixed to the inclined surface, a gap according to the angle is formed between the polishing cloth paper sheets, and the polishing cloth paper sheets can be kept in a non-contact state, so that the heat dissipation property of the grinding and polishing heat is improved.

[0015]

[Brief description of drawings]

FIG. 1 is a partial perspective view showing a substrate of a grinding and polishing grindstone according to the present invention together with a polishing cloth paper adhered and fixed thereto.

FIG. 2 is a sectional view showing an embodiment of a grinding and polishing wheel according to the present invention in which the angle of the inclined surface is 30 °.

FIG. 3 is a cross-sectional view showing another embodiment of the grinding and polishing wheel according to the present invention in which the angle of the inclined surface is 60 °.

FIG. 4 is an overall vertical sectional view of a conventional grinding and polishing grindstone.

5 is an enlarged cross-sectional view taken along the line AA of FIG.

[0016]

[Explanation of symbols]

 10 Substrate of grinding / polishing grindstone according to the present invention 11 Abrasive cloth paper 12 Serrated adhesive groove 13 Sloping surface 14 Adhesive 20 Grinding / polishing grindstone according to the present invention

Claims (2)

[Scope of utility model registration request] 1. A substrate of a rotary grinding and polishing whetstone having a disk-shaped bonding surface for bonding a plurality of strip-shaped polishing cloth papers in a radial and roofing shape, and is suitable for the polishing cloth papers to be bonded. In order to bond and fix the polishing cloth papers at the base while keeping the polishing cloth papers in a non-contact state, the adhesive surface has a plurality of saw-tooth adhesive grooves radially inclined at an appropriate angle. A substrate of a rotary grinding and polishing grindstone characterized by being formed. 2. A rotary grinding and polishing grindstone in which a plurality of strip-shaped abrasive cloths are radially and tile-shaped adhered to an adhesive surface of a substrate, which is formed into a disk shape. A plurality of saw-tooth adhesive grooves that are provided with an inclination of an appropriate angle in the direction are formed radially, and the inclined surfaces of the saw-tooth adhesive grooves are kept in contact with each other while keeping the abrasive cloth papers in a non-contact state according to the angle. A rotary grinding and polishing whetstone characterized by being bonded and fixed at the base.