JPS5818192B2 - Honing toy - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in honing wheels used in honing machines.

A honing stone for general honing processing is installed in the head of a honing machine, and the grinding wheel is brought into contact with the workpiece while applying pressure from the inside of the head, and the honing stone is rotated against the workpiece in the axial direction. Grinding is performed by reciprocating the
Since the grindstone, which is an assembly of micro-cutting blades, rotates while being in close contact with the object to be ground, it is difficult to discharge the chips cut by each micro-cutting blade and the micro-cutting edges that fall off during grinding.

For this reason, these chips and fallen micro-cutting edges get caught in the grindstone and the object to be ground during grinding, causing scratches on the object to be ground.

In particular, when a diamond grindstone or the like sintered with a metal bond is used, the above-mentioned scratches occur significantly.

This invention was made with the aim of eliminating the drawbacks of such conventional honing wheels, and is made by forming an adhesive layer that does not contain microcutting blade material over almost the entire length of the grinding wheel body on the front side in the rotational direction of the grinding wheel body. By providing a honing whetstone with a non-fine cutting edge layer, it is possible to prevent the fine cutting blade material from falling off at the front part of the grinding wheel body, and to prevent the occurrence of scratches due to biting of the fallen fine cutting blade material. The aim is to prevent this from happening.

The present invention will be described in detail below with reference to an illustrated embodiment.

In the figure, 1 is the main body of the honing stone, and the whetstone base 2
The grindstone shoe 3 is fixed to the grindstone shoe 3 which is rotated in the direction of the arrow a.

One or more of the grindstone main body 1 and the grindstone shoe 3 are attached to a rotating head of a honing machine (not shown) so that they are rotated in the direction of arrow a and reciprocated in the direction indicated by the arrow.

The grinding wheel body 1 is formed by bonding fine cutting blade materials 4 such as diamond grains, borazone, or Al2O3 grains with an adhesive such as bond, Bakelite, or epoxy resin. A non-fine cutting edge layer 5 made of only an adhesive layer and not containing the microscopic cutting edge material 4 is provided at the front portion over the entire length of the grindstone body 1.

It should be noted that if the extremely fine cutting blade material does not cause scratches even if it falls off, there will be no problem even if it mixes into the fine cutting edge layer 5 as shown in FIG.

Furthermore, if the front surface of the non-fine cutting edge layer 5 is preliminarily inclined at an angle θ as shown in FIG. 6, it can be expected that interference with foreign matter such as chips can be reduced.

Therefore, when the adhesive strength (adhesive force of the adhesive layer) x (surface area of the micro-cutting blade) is small with respect to the cutting resistance that the grindstone main body 1 receives during grinding, the micro-cutting blade material 4 falls off from the grindstone main body 1.

If this fallen micro-cutting blade material 4 is caught between the grinding wheel body 1 and the object to be ground 6, it will cause scratches on the object to be ground 6, especially at the front part of the grinding wheel body 1 in the rotational direction. Since the adhesive strength of the adhesive is small relative to the surface area of the micro-cutting blade material 4, the micro-cutting blade material 4 may easily fall off.

Therefore, in the present invention, a non-fine cutting edge layer 5 is formed at the front portion of the grindstone body 1 in the rotational direction.

As a result, the front part of the grinding wheel body 1 is left with only an adhesive layer, and the adhesive force is strong, so there is no chance of the tiny cutting blades falling off, and since there is no cutting in this area, scratches due to biting of chips occur. can be prevented at the same time.

As described in detail above, this invention provides a non-fine cutting edge layer that does not contain microscopic cutting edge material at the front part of the whetstone body in the rotational direction, so that it does not fall off, especially from the front part of the whetstone body during honing. It becomes possible to prevent the occurrence of scratches caused by biting of small cutting edges and cut chips.

The effect is particularly noticeable when applied to metal bonded whetstones that are prone to scratches, but of course general horacin and A
Even when applied to l2O3 type grindstones, the effect is extremely large.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a front view, FIG. 3 is a plan view, FIG. 4 is an enlarged view of main parts, and FIGS. 5 and 6 are It is an explanatory view showing other examples. 1 is the grinding wheel body, 4 is the fine cutting blade material, and 5 is the non-fine cutting edge layer.

Claims (1)

[Claims] 1 A large number of micro-cutting blade materials 4 are bonded together with an adhesive to form the whetstone body 1, and the whetstone body 1 includes the micro-cutting blade material 4 over almost the entire length of the whetstone body 1 on the front side with respect to the rotation direction of the grindstone body 1. This honing stone is provided with a non-fine cutting edge layer 5.