JPH01199772A - Manufacture of electrodeposition sheet grinding stone - Google Patents

Abstract

PURPOSE:To improve surface roughness of a ground material almost equally forming height between electrodeposition abrasive grain layers by extending a cloth material in a heated condition to its weft direction and correcting looseness of the weft thereafter giving conductivity to the cloth material while forming a metal plating layer and the electrodeposition abrasive grain layer on surfaces of this cloth material. CONSTITUTION:A cloth material 4 consists of a synthetic resin fiber thread 1 of polyester or the like, and the cloth material 4 is extended in a heated condition to a direction of its weft 3, correcting looseness of the synthetic resin fiber thread 1 of the weft 3. In this way, a cloth joint of the weft 3 forms its shape almost equal by a plane view to a recessed part, while even a cloth joint of a warp 2 forms its shape almost equal by a plane view to a protruded pert. Further a cloth joint of the weft 3 and the warp 2 forms the shape equal even by a side sectional view further the height almost equal. Next, the cloth material 4 forms a metal layer 5, being given conductivity, thereafter the cloth material 4 forms in its surface a metal plating layer and an electrodeposition abrasive grain layer, consisting of superabrasive grains, secured into this metal plating layer. In this way, height between the electrodeposition abrasive grain layers is formed almost equal.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method for producing an electrodeposited note grindstone suitable for use as a disc grindstone, a belt grindstone, etc. for grinding workpiece materials.

"Conventional technology" Conventionally, electroplated abrasive grains, which are made by fixing super abrasive grains such as diamond or CEN to the surface of cloth material by metal plating such as N1, have been used as disc grindstones and the like for relatively simple grinding processes. An electrodeposited sheet grindstone with layers is used.

Such an electrodeposited sheet grindstone has conventionally been manufactured in the following manner.

That is, first, as shown in FIG.
As shown in FIG. 4, Cu, N,
A thin film-like metal layer 5 having electrical conductivity such as i is formed.

Next, as shown in FIG. 5, a metal plating layer 6 made of Ni, Co, or an alloy thereof, etc., and a metal plating layer 6 fixed in the metal plating layer 6 are applied to the surface of the cloth material 4 imparted with conductivity. An electrodeposited abrasive layer 8 consisting of superabrasive grains 7 is formed.

Here, this 77i abrasive Vt layer 8 is formed by electrolytically plating the surface of the cloth material 4 in an electrolytic plating solution containing N1 groups, etc., using the cloth material 4 as a cathode, and in parallel with this. It is formed by dispersing and fixing superabrasive grains 7 of Guyamond, Cl5N, etc. in the layer 6.

"Problems to be Solved by the Invention" However, the electrodeposited sheet grindstone manufactured in this manner has the following problems.

A plain-woven fabric using twisted yarns consisting of a large number of synthetic resin fiber yarns 1 as warp yarns 2 and weft yarns 3 (in the fourth example, microscopically, synthetic resin fibers 1 in the fabric grain are used as yarns!...
However, there is some slackness, and there are slight differences in the degree of slackness. For this reason, as shown in FIG. 6, the shape of the grain of the warp yarn 2 is irregular when viewed in side cross section, and the height also varies, and the elasticity of this portion also differs. This also applies to the weft thread 3.

When the surface of the cloth material 4 in such a state is subjected to electroless plating to impart conductivity and then the electrodeposited abrasive layer 8 is formed, the electrodeposited abrasive layer 8 also has heights corresponding to the above-mentioned heights. occurs, and
The elasticity of that part is also different.

Furthermore, the superabrasive grains 7 are not tightly fixed in areas where the degree of loosening is large.

When such an electrodeposited sheet grindstone is used as a disc grindstone or the like to grind a workpiece, the surface roughness of the workpiece becomes poor due to the unevenness. In addition, since only the protruding portion of the electrodeposited abrasive layer 8 comes into contact with the workpiece, the superabrasive grains 7 in this portion may fall off or chip, or cracks may occur in the metal plating layer 6. It may peel off. Furthermore, since the elasticity is different, the flatness of the workpiece is not good. In addition, since the superabrasive grains 7 are not tightly fixed in areas with large slack, machinability is poor.

This invention was made in view of the above circumstances, and its purpose is to produce an electrodeposited sheet grindstone that can stably obtain good grinding performance and improve its service life. Our goal is to provide the following.

"Means for Solving the Problems" In order to achieve the above object, in the method for manufacturing an electrodeposited sheet grindstone of the present invention, a cloth material made of synthetic resin fiber yarn is stretched in the weft direction of the cloth material in a heated state. After correcting the slack of the synthetic resin fiber thread, imparting conductivity to this cloth material,
Thereafter, a metal plating layer and an electrodeposited abrasive layer consisting of superabrasive grains fixed in the metal plating layer are formed on the surface of this cloth material.

"Example" Hereinafter, an example of the method for manufacturing an electrodeposited sheet grindstone of the present invention will be described with reference to FIGS. 1 and 2.

In addition, in Figures 1 and 2, Figures 3 to 6
Components that are the same as those in the figures are given the same reference numerals.

First, as in the conventional method, a cloth material 4 is created by plain weaving a twisted yarn consisting of a large number of synthetic resin fiber yarns 1 such as polyester as warp yarns 2 and weft yarns 3.

Next, this cloth material 4 is stretched in the weft 3 direction, and the weft 3
Correct the slack in the synthetic resin fiber yarn l.

For example, a twisted yarn (15
0 denier/2) as warp and weft yarns, the heating temperature is 120 to 160 degrees.
C1 elongation is 2 to 10% (elongation rate).

In this way, the shape of the weft yarn 3 becomes substantially the same in plan view, and this portion forms a recess. Further, due to the elongation of the weft threads 3, the shape of the grain of the warp threads 2 becomes substantially the same in plan view, and this portion forms a convex portion.

That is, as shown in FIG. 1, when viewed from above, the cloth material 4 has the four substantially same-shaped portions and the substantially same-shaped convex portions alternately and orderly arranged. Further, as shown in FIG. 2, the shape of the weft yarn 3 has substantially the same shape when viewed in side cross section, and the heights thereof have also substantially the same shape. Further, the shape of the grain of the warp yarns 2 is substantially the same when viewed in side cross section, and the height is substantially the same. Also,
The elasticity of each grain is also approximately the same. Furthermore, cloth material 4
The marks from the fabric folds are also corrected.

Next, in the same manner as before, the cloth material 4 is electroless plated.
A metal layer 5 is formed on the surface of the fabric material 4, and then a metal plating layer 6 and superabrasive grains 7 fixed in the metal plating layer 6 are electrodeposited on the surface of the cloth material 4 imparted with conductivity. Abrasive layer 8
form.

In the electrodeposited sheet grindstone manufactured as described above, the grains of the warp threads 2 having almost the same shape and the grains of the weft threads 3 having the same shape are arranged in an orderly manner, so the superabrasive grains 7 is firmly fixed, and the slack has been corrected, so it is tightly fixed. This also applies to the weft thread 3. Moreover, each grain of the warp yarn 2 has substantially the same shape when viewed in side cross section, and the height between the electrodeposited abrasive grain layers 8 also becomes substantially the same. The same applies to the weft thread 3. Furthermore, the elasticity of each cloth is approximately the same.

When such an electrodeposited sheet grindstone is used as a disc grindstone or the like to grind a workpiece, the surface roughness of the workpiece is improved because the heights between the electrodeposited abrasive grain layers 8 are approximately the same. In addition, unlike in the past, only the protruding part comes into contact with the workpiece, and the superabrasive grains 7 in that part do not fall off or chip, and cracks do not occur in the metal plating layer 6. It will not peel off or peel off. In addition, since the elasticity of the material is the same, the flatness of the work material is improved, and chipping and cracking can be prevented. In addition, since the superabrasive grains 7 are tightly fixed, the machinability is good.

Furthermore, since the electrodeposited abrasive layer 8 can have a structure in which concave portions and convex portions are arranged in an orderly manner, the convex portions of the electrodeposited abrasive layer 8 perform cutting, while the concave portions supply lubricant. Since chips can be discharged, excellent cutting performance and chip discharge performance can be obtained.

As described above, in the method for manufacturing the electrodeposited sheet grindstone, good grinding performance can be stably obtained during use, and the service life can be improved.

"Effects of the Invention" As explained above, the method for manufacturing a fixing sheet grindstone of the present invention involves stretching a cloth material made of synthetic resin fiber yarn in the weft direction of the cloth material in a heated state, After correcting the slack in the cloth, the cloth is also made conductive, and then an electrodeposited abrasive layer consisting of a gold plating layer and superabrasive grains fixed in the same metal plating layer is applied to the surface of the cloth material. I tried to form it.

Therefore, by the stretching process, the shape of the weft of the cloth material becomes substantially the same in plan view, and this portion forms a recessed portion. Further, due to the elongation of the weft threads, the shape of the grain of the warp threads becomes substantially the same in plan view, and this portion forms a convex portion. In other words, the cloth material has concave portions having substantially the same shape and convex portions having substantially the same shape when viewed from above, which are alternately and orderly arranged.

In addition, the shape of the weft grains is substantially the same when viewed in side cross section, and the heights are also substantially the same. Further, the shape of the grain of the warp threads becomes substantially the same when viewed in side cross section, and the heights are also substantially the same. Further, the elasticity of each cloth is almost the same. Furthermore, the marks of cloth folds on the cloth material are also corrected.

Therefore, when an electrodeposited abrasive layer is formed on the surface of this cloth material after imparting conductivity to it, the grains of the warp yarns, which have approximately the same shape, and the grains of the weft yarns, which have approximately the same shape, are arranged in an orderly manner. The superabrasive grains are fixed to each grain in the same way, and the looseness is corrected so that they are tightly fixed. The same HP applies to this word weft. In addition, each grain of the warp has almost the same shape when viewed in side cross section, and the electrodeposited abrasive layer IEff
The heights are almost the same. The same applies to the weft.

Also, the elasticity of this part is almost the same.

When a workpiece is ground using such an electrodeposited sheet grindstone as a disc grindstone or the like, the surface roughness of the workpiece is improved because the heights between the electrodeposited abrasive grain layers are approximately the same. In addition, unlike in the past, only the protruding part comes into contact with the workpiece, and the superabrasive grains in that part do not fall off or chip, and the metal plating layer does not crack. It does not peel off. In addition, since the material has the same elasticity, the flatness of the workpiece can be improved and chipping and cracking can be prevented. In addition, since the superabrasive grains are closely fixed, the machinability is good.

As described above, in the method for manufacturing the electrodeposited sheet grindstone, good grinding performance can be stably obtained during use, and the service life can be improved.

[Brief explanation of the drawing]

1 and 2 are diagrams for explaining an embodiment of the method for manufacturing an electrodeposited sheet grindstone of the present invention, in which FIG. 1 is a plan view of a stretched cloth material, and FIG. 2 is the same. It is a schematic diagram showing a side cross section of cloth material. 3 to 6 are diagrams for explaining a conventional method of manufacturing an electrodeposited sheet grindstone, in which FIG. 3 is a schematic side sectional view of a cloth material, and FIG. 4 is a cloth material imparted with conductivity. A schematic side sectional view of
FIG. 5 is a schematic side sectional view of a fabric material on which an electrodeposited abrasive layer is formed, and FIG. 6 is a schematic side sectional view showing a side sectional view of the fabric material. 1... Synthetic resin fiber yarn, 2... Warp, 3... Weft, 4... Cloth material, 5...
...Metal layer, 6...Metal plating layer, 7...
...Super abrasive grain, 8... Electroplated abrasive grain layer.

Claims (1)

[Claims] A cloth material made of synthetic resin fiber yarn is stretched in the weft direction of the cloth material in a heated state to correct the slackness of the synthetic resin fiber yarn, and then electrical conductivity is imparted to this cloth material. 1. A method for manufacturing an electrodeposited sheet grindstone, which comprises forming an electrodeposited abrasive grain layer consisting of a metal plating layer and superabrasive grains fixed in the metal plating layer on the surface.