JPS58165964A - Grinding tool - Google Patents

Abstract

PURPOSE:To obtain a grinding tool which is particularly excellent in grinding capability, grinding accuracy, and grinding durability by electrodepositing abrasive grain on a base metal having a multitude of communicating pores made of reticulations, filter-like material, sintered material, etc. CONSTITUTION:A grinding tool is structured in such a way that abrasive grain is stuck on a base metal having a multitude of communicating pores by means of electrodepositing. Resin material or the like on which stainless steel, copper, brass, and metal coating are applied is used as the material of the base metal. The shape of the base metal has exceedingly free availability of a reticular material made of metal wire that is netted, filter shaped material made of laminate or plate-shaped metal material which is etched or punched, or sintered material. In is all right if thickness of the base metal is 0.2mm. or more, and the length can be freely changed. Besides, the diameter of the pore is desirably 30micra or more, and the size of the abrasive grain is desirably 80meshes or less.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a grindstone that is particularly excellent in grinding performance such as grinding ability, grinding accuracy, and grinding sustainability.

Conventional grinding tools, such as diamond tools, can be point-shaped, wheel-shaped, or file-shaped depending on the shape of the alloy, but all of them have a solid grinding wheel attached to the surface layer of the alloy. When chips generated during grinding accumulate, the surface of the grinding wheel becomes clogged, which not only reduces the grinding ability of the grinding wheel, but also burns the cutting edge and the material to be ground due to heat generation, resulting in low F of the finished surface accuracy and grinding. There was a drawback that caused a decline in ability Q].

As a result of various studies, the present inventors have invented a new grindstone that completely eliminates the above drawbacks.

That is, in the grinding wheel of the present invention, a metal base material having a large number of communicating pores is employed as a base material, and abrasive grains are usually fixed to this metal base material by an electrodeposition method. This is because even though the electrodeposition method was adopted, the processing speed for electrodeposited products was high. Any base material can be used as long as it has good electrical conductivity. For example, stainless steel, copper, brass, resin material coated with metal, etc. can be used. Base material shape A1 As shown in the drawing, extremely flexible and thin items such as net-like bodies made of braided metal wires, filter-like articles made by etching or a-punching holes in thin film-like or plate-like metal bodies, and sintered bodies. Can be used for thick materials.

There is no particular limit as long as the thickness of the base material is 10,2 sieves or more. The length of the base material can be changed freely as necessary.

``Also, the diameter of the pores is preferably 30 microns or more, and any abrasive grains can be used, whether for roughing or finishing, but the particle size is preferably 80 mesh or less.

Since the grinding wheel of the present invention uses a metal body having a large number of communicating pores as the base material, the abrasive grains of diamond, CBN, etc. are uniformly distributed not only on the surface of the base material but also within the many pores. It is retained by electrodeposition. Therefore, the chips generated during grinding do not flow out from the communicating holes in the base material without adhering to them, causing the surface to become clogged, and the communicating holes allow for easy heat dissipation, resulting in burnout due to heat accumulation. The cutting edge is always kept fresh and sharp.

Even if the base material gradually wears out due to grinding, the abrasive grains present in the many holes are exposed one after another and a constant number of cutting edges are always maintained on the surface of the grinding wheel. Compared to coated conventional tools, it can be used for an extremely long time.

Further, the whetstone of the present invention can be used by being attached to a well-known wheel-shaped, point-shaped, file-shaped, etc. alloy, but it can also be used as a grindstone θ without an alloy. Since abrasive grains are present throughout the grindstone, it can be formed into any shape to match the workpiece, and can be freely ground not only on flat surfaces but also on complex curved surfaces such as lenses.

Next, examples of the present invention will be shown.

Example 1 Diamond grains (particle size 325/4
00 mesh) 1 and passed through an electrolytic plating bath to fix the diamond grains with the nickel deposited by electrodeposition.

Compared to conventional products, this whetstone was significantly superior in terms of grinding ability, grinding accuracy, and grinding sustainability. That is, the lens,
Clogging f occurs when processing ceramics, magnetic materials (ferrite), etc.
), and the processing speed was 3 to 4 times that of conventional products. ) Example 2 A CBN grindstone electrodeposited in the same manner as in Example 1 was tested, and it was found that θ, magnetic material (centast), etc.
] Even for difficult-to-cut materials, as in Example 1, the machining speed was 13 to 4 times that of conventional products without causing clogging.
,

[Brief explanation of drawings]

Figure 1 shows a net-like base material made of stainless steel wire, Figure 2 shows a seamless band-like base material made by punching copper pipes, and Figure 3 shows (A), (B), (glued, etched T). This is a metal base T with holes drilled by electroforming. Attorney: Toshi Sasaki, Tetsu No. 7, Fig. 2, Fig.

Claims (4)

[Claims] (1) A whetstone made by electrodepositing abrasive grains on a metal base material having a large number of communicating pores. (2) The grindstone according to claim 1, wherein the metal base material is a net-like body. (3) The grindstone according to claim 1, wherein the metal base material is a filter-like material. (4) The whetstone according to claim 1, wherein the metal base material is a sintered body.