JPS61244468A - Belt-like grinding stone and manufacturing method thereof - Google Patents

Abstract

PURPOSE:To make it possible to carry out a rough grinding process and heavy grinding process with a high degree of efficiency, by making columnar grinding stone members each having a locking section in its peripheral surface side, pierce in the vertical direction through an endless belt-like carrier member made of flexible materials so that several numbers of the grinding stone members are equally distributed over the surface of the belt-like carrier member, and by binding the grinding stone members to the belt-like carrier member. CONSTITUTION:A grinding stone member 1 is formed such that particles made of a high hardness material are binded with a binder and is then sintered to obtains small columnar pieces having various cross-sectioned shapes as indicated by reference numerals (a)-(e). Each grinding stone member 1 is formed in its middle or lower peripheral surface section with a recessed groove 2, a stepped part 3 or projections 5. Further, a carrier belt made of belt-like steel sheet, synthetic resin, etc. is formed in its carrier belt surface 10a with several through-holes 11 having a shape corresponding to the shape of the grinding stone members 1, the holes being equally distributed over the belt surface 10a. However, if the belt is made of a fabric or a net-like material, a suitable mesh-like structure is provided. Further, the grinding stones 1 are made to pierce, in the vertical direction, the through-holes 11 in the above-mentioned carrier belt 10, and one end face 1a of the grinding stone members 1 is lined up at a height in parallel with the carrier belt surface 10a, and the grinding stone members 1 are binded integrally with the carrier belt 10. Accordingly, no grinding material comes off easily from the carrier belt 10 during use thereof, and therefore, it is possible to carry out rough grinding and heavy grinding processes.

Description

[Detailed description of the invention] [Technical field of invention] This invention is applicable to metal materials as well as plastics.

It relates to a belt-shaped grinding wheel used for grinding workpieces made of various materials such as wood and stone.

[Technical background of the invention and its problems]

Conventionally, the endless grinding belt used for this type of application consists of fine abrasive grains fixed with adhesive to the surface of a base material (belt or sheet) made of flexible material such as cloth or paper. What he did is well known. However, the performance and usage strength of the grinding belt are mainly determined by the adhesive force between the base material and the abrasive material, and in the conventional grinding belt, the adhesive area of the abrasive grains to the base material is very large. Because the abrasive grains are small and easily fall off from the base material during grinding, there is a limit to the scope of its use.1 For example, it can only be used for light work such as rust removal and gloss polishing of metal materials and surface polishing of wood. First, it could not be used for rough grinding or heavy grinding work like that seen with general rotary grinding wheels.

[Purpose of the invention]

In order to address the above-mentioned problems, this invention fundamentally changes the concept of fixing abrasive grains to the surface of a base material with an adhesive, and uses a completely original structure and manufacturing method to strengthen the tensile strength of the base material and shape the abrasive material. In addition to its original function as an endless grinding belt, this new belt also has the excellent function of performing rough grinding and heavy grinding with high efficiency similar to a rotary grindstone. The purpose of the present invention is to provide a shaped grinding wheel and a method for manufacturing the same.

[Summary of the invention]

The present invention has been developed to achieve the above-mentioned object, and the outline of the structure of the belt-shaped grinding wheel is as follows: A large number of columnar grindstone bodies having stop portions are vertically penetrated and arranged in an evenly distributed state.

The end faces of each of the grindstone bodies are aligned with the height parallel to the surface of the carrier band and are integrally connected to the carrier band.

The method for manufacturing the belt-shaped grinding wheel described above includes (a) superimposing two or more carrier bands each having a through hole that loosely fits into the locking part on the circumferential side of the grinding wheel body; A method in which, after passing the grindstone body through the hole, the upper and lower support bands are moved in opposite directions to reduce the size of the hole, and the grindstone body is fixed in the hole of the support band so that it cannot escape.

(a) After penetrating the grindstone body into the mesh of the carrier band having a net-like structure and engaging the locking portions of each of the grindstone bodies with the mesh of the carrier band, the carrier band is stretched in the longitudinal direction to open the mesh of the carrier band. A method of reducing the size of the grinding wheel and fixing it in the mesh of the carrier belt so that it cannot escape.

c) A method in which, in the weaving process of the carrier band, each grindstone body is woven into the weave of the carrier band by penetrating it at right angles to the plane direction of the carrier band.

2) In the process of making a net for a carrier band, each grindstone body is passed through the mesh of the carrier band at right angles to the plane direction of the carrier band, and the net is made integrally.

The belt-shaped grinding wheel according to the present invention is manufactured based on the above-mentioned methods (a), (b), (c), and (d).

[Embodiments of the invention]

Hereinafter, the structure of the belt-shaped grinding wheel and the manufacturing method thereof according to the present invention will be explained in detail with reference to drawings of embodiments.
The grinding wheel G shown in FIG. 1 shows one example of the most typical implementation structure of the present invention, and includes a large number of grinding wheel bodies 1 formed by dividing into small columnar pieces and an endless support supporting the grinding wheel bodies 1. Obi 1
0. Among these, the grinding wheel body 1 is made by solidifying abrasive grains made of a highly hard substance with an organic or inorganic binder and sintering them.
It is formed into small columnar pieces with various cross-sectional shapes such as circular, square, rectangular, hexagonal, and "<" shapes as shown in FIG. A locking portion 6 such as a groove 2 or a stepped portion 3 or a protrusion 4 or a protrusion 5 in place of this is provided. Moreover, the support belt 1o is a belt-shaped steel plate,
It is molded from a material such as a synthetic resin or rubber sheet, paper cloth, non-woven fabric, wire mesh, synthetic resin net, etc., and the supporting band surface 10a is covered with a sheet-like material such as a steel plate, as shown in FIGS. 8 to 11. In this case, depending on the shape of the whetstone body 1 by means such as punching, it can be shaped into circular, square, rectangular, hexagonal, or "<
A large number of holes 11 of various shapes such as ``'' are drilled in an evenly distributed state, and in the case of woven fabric or net-like material, the weave 12 and mesh 13 are formed to a size that matches the grinding wheel body 1. Carrying belt 1
A large number of grindstone bodies 1 are vertically penetrated through the through-holes 11 of o, or textures 12 or meshes 13 in place of these, and are arranged in a uniformly distributed state, and the end surface 1a of each grindstone body 1 is arranged as a supporting band surface. It is integrally connected to the carrier band 10 at a height parallel to that of the carrier band 10a.

There are four types of methods for manufacturing the above-mentioned grinding wheel, depending on the form of connection between the grinding wheel body 1 and the carrier band 10 that supports it, and any of these methods may be employed.

First, in the first method (a), two or more carrier belts 1
0 and 10 are superposed so that the upper and lower through holes 11 and 11 or the mesh 13 in place of these coincide with each other, and the through holes 1
1, 11 or the mesh 13, the upper and lower carrier bands 10.10 are pulled and moved in opposite directions as shown in FIG. carrying belt 10,
The grinding wheel body 1 is locked and fixed by hooking the inner peripheral edge of the through holes 11 or the meshes 13 of 10 so that it cannot escape, and the second method (
In (b), if the carrier band 1o has a net-like structure,
After passing the grindstone body 1 vertically through each mesh 13 of the support band 10, the size of the mesh is changed in a direction perpendicular to this by stretching both ends of the support band 10 in the longitudinal direction as shown in FIG. The grindstone bodies 1 are joined together by locking and fixing the grindstone bodies 1 in the vertical direction so that they cannot escape. In this case, the operation of stretching the carrier band 10 in the longitudinal direction by the methods (a) and (b) above is performed by wrapping the support band 10 around the circumferential surface of the drive roll 7 as shown in FIGS. 6 and 7 of the endless belt-shaped grinding wheel G. Alternatively, it may be carried out when the belt is stretched between the drive roll 7 and driven roll 8 of the grinding machine.

In addition, in the third method (c), the grinding wheel body 1 is
In the weaving process of the carrier belt 1o, each grindstone is attached to the weave 12 of the carrier belt 10 as shown in FIG. body 1
In the fourth method (d), similarly, in the fourth method (d),
Instead of manufacturing a belt-shaped grindstone by attaching the grindstone body 1 to the mesh of the carrier belt 1o after making the mesh of the carrier belt 1o, in the process of making the carrier belt 10, the mesh 13 of the carrier belt 10 is As shown in FIG. 11, each grindstone body 1 is passed through the carrier band 10 at right angles to the plane direction and is connected together by meshing.

〔Effect of the invention〕

As described above, the belt-shaped grinding wheel manufactured by the method of the present invention is such that a column-shaped grinding wheel body having a locking part on the circumferential side is vertically mounted on an endless belt-shaped carrier band made of a flexible material. A large number of grinding wheels are arranged in an evenly distributed manner through the grinding wheels, and the end surfaces of each of the grinding wheels are aligned at a height parallel to the surface of the carrier band, and are integrally connected to the carrier band, thereby increasing the grinding strength and durability of the grinding wheels themselves. Not only does it have very strong properties, but also materials that are difficult to adhere to, such as wire, rubber, and wire mesh, can be freely selected for the support band, and the bonding strength of the grinding wheel to the support band is outstanding. The abrasive material does not easily fall off from the carrier band during use, and rough polishing and heavy grinding of metals, stones, etc., which were previously considered impossible, can now be performed with extremely high efficiency. This greatly expands the scope of use of this type of grinding belt. In addition, in the case of the present invention, if the carrier band supporting the grindstone body is turned over, not only the front side but also the back side of the grindstone body can be used for grinding. The belt-shaped grinding wheel of the invention can be manufactured by applying each of the above methods (a), (b), (c), and (d) to produce a belt with excellent performance according to the required purpose and use. Since the grinding wheel can be provided at an extremely low cost, it will make a great contribution to the development of the industry.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an example of a specific implementation structure of the belt-shaped grinding wheel according to the present invention, FIG. 3
FIG. 4a is a plan view illustrating the operation of connecting the carrier belt and the grindstone body according to another embodiment. b, c, d, e are perspective views showing the shape of the grinding wheel body, Fig. 5a
,b. c, d are front views showing the shape of the locking part provided on the circumferential side of the grinding wheel body, FIGS. 6 and 7 are cross-sectional views showing the state in which the belt-shaped grinding wheel is attached during use, and FIG. 8 11 to 11 are plan views showing the shape of the carrier band and the state of connection of the grindstone body according to other embodiments.

Claims (1)

[Claims] 1) An endless belt-like carrying band made of a flexible material,
A large number of columnar grindstone bodies having a locking part on the circumferential side are passed through in the vertical direction and arranged in an evenly distributed state, and the end surfaces of each of the grindstone bodies are aligned at a height parallel to the surface of the support band to form a support band. A belt-shaped grinding wheel that is integrated into one piece. 2) Two or more carrier bands each having a through hole that loosely fits into the locking part on the side surface of the whetstone body are superimposed one on top of the other, and after passing the whetstone body through the through hole of each carrier band, the upper and lower supports are placed. A method for producing a belt-shaped grinding wheel, which comprises moving the bands in opposite directions to reduce the size of the holes, and fixing the grindstone body in each hole of the carrier band so that the grinding wheel cannot escape. 3) After penetrating the grindstone body into the mesh of the carrier belt having a net-like structure and engaging the locking portions of each of the grindstone bodies with the mesh of the carrier belt, the carrier belt is stretched in the longitudinal direction to open the mesh of the carrier belt. A method for manufacturing a belt-shaped grinding wheel, characterized by reducing the size and fixing the grinding wheel body in a mesh of a carrier band so that it cannot escape. 4) A method for manufacturing a belt-shaped grinding wheel, characterized in that, in the weaving process of the carrier band, each grindstone body is integrally woven through the weave of the carrier band at right angles to the plane direction of the carrier band. 5) A method for manufacturing a belt-shaped grinding wheel, characterized in that, in the net-making process of the carrier belt, the grindstone body is passed through the mesh of the carrier belt at right angles to the plane direction of the carrier belt to form the net integrally.