JPS61249278A - Manufacture of super-hard abrasive grain hand lap wheel - Google Patents

Abstract

PURPOSE:To reduce a grinding wheel with an abrasive material supplementally applied as well as to prolong the service life of this wheel, by applying the pastelike abrasive material to the surface of a wheel spindle stock, while holding abrasive grains pushingly in a lot of minute holes on a porous surface of the wheel spindle stock. CONSTITUTION:A pastelike abrasive material 3 made up of kneading super-hard abrasive grains of diamond, CBN and the like into proper paste is applied to a wheel surface 2 of the surface of a porous wheel spindle stock 1 of a ceramic or the like, while these abrasive grains are held pushingly in a lot of minute holes on the wheel surface 2 consisting of a porous surface of the wheel spindle stock 1, thus a super-hard abrasive grain hand lap wheel A is produced. When the pastelike abrasive material 3 of this wheel surface 2 is worn off with use on abrasition, this pastelike abrasive material 3 is properly supplemented and applied at discretion according to a degree of the wear, and the hand lap wheel A is reproduced for reuse. And, when loading or the like occurs, the wheel surface 2 is washed with a detergent, having the porous surface exposed again, and the pastelike abrasive material 3 is reapplied, thus the grinding wheel A is used in good conditions all the time.

Description

[Detailed Description of the Invention] 1)...Industrial Field of Application and Prior Art The present invention is primarily intended for use in hand wraps made of cemented carbide bitomas or cemented carbide metals. The present invention relates to a method for manufacturing a hand lap grindstone (2) for lapping or honing, which enables the production of an ultra-hard abrasive hand lap whetstone using an extremely simple method.

Conventionally widely used two-throat whetstones are resin-bonded whetstones and metal-bond whetstones in which smoked hard abrasive grains such as diamond or CBN are bonded to the whetstone head with resin or metal, but there are many types of grindstones that are difficult to manufacture. This process is time-consuming and expensive, and if the part of the whetstone where the abrasive grains are bonded, that is, the 1-3m thick surface part, is worn out, the whole whetstone must be discarded. Therefore, the life of the whetstone was short and it was also uneconomical.

■) Manufacturing method of the present invention The present invention enables the production of ultra-hard abrasive hand rub grinding wheels using an extremely simple method that has not been seen before. The grinding wheel surface 2 (i.e., the surface used as a grinding wheel) on the surface of the grinding wheel head 11 made of a material, for example, unglazed ceramic small prism material, is coated with a paste-like abrasive material 3 prepared by conventionally kneading it. Then, the abrasive grains are pressed into and held in a large number of fine pores of the grinding wheel surface made of the porous surface of the grinding wheel head L, thereby producing an ultra-hard abrasive hand-wrapped grinding wheel A.

The numeral ψ indicates the whetstone holder (made of metal or plastic). However, there are cases where the grindstone holder ψ is not required.

Pastes include water-soluble ones and oil-based ones,
Although it is appropriate depending on the purpose, in the examples of the present invention, an oil-based paste [e.g., silicone oil + filler (fine powder of alumina, carborundum, etc.) with 10 abrasive grains] is used to prevent the workpiece from rusting. I got good results.

Also, good results were obtained when a vitrified bond grindstone was used as a substitute for the porous ceramic as the grindstone head I.

■)...Function, effect (1)...The ultra-hard abrasive hand rub grinding wheel of the present invention manufactured as described above is produced by grinding the grinding wheel surface coated with the paste abrasive material onto the surface to be lapped. Therefore, the paste-like abrasive material on the surface of the whetstone (the surface to which the abrasive material is applied) can be replenished as needed as needed, depending on its wear and tear. Can be used.

In addition, when clogging occurs, the grinding wheel surface is washed with an appropriate detergent to expose the porous surface, and the paste-like abrasive material is reapplied, so that the grinding wheel can be used in good condition at all times.

(2)...Furthermore, if the grinding wheel surface itself wears out or changes to the grinding wheel surface such as unevenness occurs due to use of polishing, remove the paste-like abrasive material with detergent and then remove it from the surface plate. By scattering fine abrasive grains such as alundum or carborundum on top and lightly dressing with washing oil,
Since a flat surface can be easily obtained, by applying paste-like abrasive material to this surface in the same manner as described above, a hand lap grindstone similar to a new product can be obtained.

Therefore, in the past, the entire grinding wheel was discarded when it wore out.
Unlike a drag grindstone, it has the advantage of being several times longer in life and doubling machining efficiency.

(3)...By selecting the ceramic material and adjusting the firing process, it is possible to adjust the size of the numerous micropores in the whetstone head. It is easy to obtain particles of various sizes, so rough finishing,
It has the advantage of being able to be used in combination by changing the grindstone head (hole size) and abrasive grains (particle size) depending on the purpose, such as precision finishing.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an ultra-hard abrasive hand rub grindstone manufactured by an embodiment of the method of the present invention. Number, A...Ultra hard abrasive grain hunt lamp grindstone of the present invention, I...
A grinding wheel head made of a porous material (e.g., unglazed ceramic small prism material), 3... Grinding wheel surface (the part of the grinding wheel head L to which the paste abrasive material is applied), 3... Paste abrasive material (appropriate Paste kneaded with ultra-hard abrasive grains)C Figure 1

Claims (1)

[Claims] Paste-like abrasive grains prepared by kneading ultra-hard abrasive grains such as diamond or CBN into an appropriate paste are applied to the surface of a porous stone head made of ceramic, etc. A method for manufacturing an ultra-hard abrasive hand-wrap whetstone, characterized in that the hand-wrap whetstone is manufactured by forcing and holding abrasive grains in the holes.