JPS5932266B2 - Cylindrical grinding wheel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a whetstone for cylindrical grinding, and an object of the present invention is to provide a whetstone that is robust and allows highly accurate control of abrasive grain concentration.

As shown in FIG. 1, a plurality of abrasive grains 2 are deposited in a single layer on the surface of a metal section 1, which can be a thin sheet of steel or copper, with a desired concentration of abrasive grains. A chain-like abrasive material 4 is formed by connecting a large number of abrasive materials at approximately equal intervals with wire rods 3, and the chain-like abrasive material 4 is connected to a metal wheel-shaped base material 5 as shown in FIGS. 2 and 3.
The piece 1 and the wire rod 3 are placed in contact with the base material 5 on the outer periphery 51 of the abrasive material 5, and the chain-like abrasive material 4 is bonded to the base material 5.

The abrasive grains 2 are ultra-hard abrasive grains such as diamond or cubic boron nitride, and are attached to the metal piece 1 with a suitable adhesive. The chain-like abrasive material 4 may be made by connecting the unit pieces 1 one after another with short wire rods, but it is preferable to arrange the unit pieces 1 in a row on a long wire rod 3 and fix them with adhesive as shown in the example shown. is easy to make.

It is preferable that the chain-like abrasive material 4 and the base material 5 be bonded by electrodeposition because a strong bonding force can be obtained.

In this case, it is necessary to position and temporarily attach the chain-like abrasive material 4 prior to electrodeposition, and grooves 6 are formed along the placement position of the abrasive material 4 as shown in FIGS. 4 and 5. The wire rod 3 is fitted into the groove 6, and the back surface of the section 1 is brought into contact with the surface of the base material 5 and temporarily attached with an adhesive. The base material 5 to which the chain-like abrasive material 4 has been temporarily attached as described above is immersed in a plating bath, and the sixth
As shown in the figure, electrodeposition is performed at a position 5 so that the electrodeposited film 1 is formed to a point close to the height of the abrasive grains 2.

As a result of electrodeposition, the groove 6, wire 3, section 1, etc. are all covered with the electrodeposition film 1, and as shown in Figure T, the abrasive grains 2 are applied to the grinding wheel of the base material 5.
Only one part stands out. The example in Figure 3 shows a plurality of rows of chain-like abrasive materials 4 arranged in the circumferential direction, but as in the example in Figure 8, one long chain-like abrasive material 4 is arranged in a spiral manner. You can also do that. The shape of the section 1 is arbitrary, such as a rectangle (FIG. 1), a circle (FIG. 9), and an oval (FIG. 10). Although the above embodiment is an outer circumferential grinding wheel, it is also possible to implement a side surface grinding wheel in which the side surface 52 of the base material 5 is used as the grindstone.

It goes without saying that the present invention is not limited to a flat wheel type grindstone, but can also be applied to a stepped wheel type, that is, a full-form grindstone. Similar to conventional products, the cylindrical grinding wheel of the present invention performs outer periphery grinding on the outer periphery grinding surface and also forms a grindstone on the side surface. Since the wheel-shaped base material 5 is used and a grindstone is formed on its surface, it is robust and can sufficiently withstand cutting into hard work materials and high-speed rotation.

5 As the abrasive material 4 forming the whetstone, a chain-like material is used in which metal pieces 1 each having a plurality of abrasive grains 2 adhered to a single layer with a desired concentration of abrasive grains are connected by wire rods 3 at approximately equal intervals. Since this is bonded to the surface of the base material 5, it is easier to arrange the abrasive grains compared to the case where individual abrasive grains are distributed and adhered to the surface of the base material, and the chain-like abrasive material 4 is flexible. Because of this, it easily conforms to the surface shape of the base material 5, and can be bonded to base materials of any shape and diameter.

Also, by selecting the spacing between adjacent chain abrasive materials 4 on the base material, various concentrations of abrasive grains can be obtained. Coupled with the fact that it is determined in advance, the concentration of abrasive grains can be managed with high precision.

By preparing chain-like abrasive materials in which the size of the section 1, the concentration of abrasive grains on the section, the distance between the sections in the longitudinal direction, etc. are different, it is possible to easily obtain grinding wheels with various degrees of abrasive grain concentration. I can do it. Furthermore, since the abrasive surface formed on the base material 5 is a single layer of abrasive grains, and the abrasive grains 2 are solidified for each section 1, large chip pockets P (shown in the sixth figure) are formed on the abrasive surface. Ru.

Therefore, chips are well removed and there is no need for re-sharpening, which has the effect of reducing grinding work costs. The grindstone of the present invention can be used not only for mechanical grinding but also as an electrode grindstone for electrolytic grinding.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the chain-like abrasive material used in the grindstone of the present invention;
The figure is a front view of the base material to which the chain-like abrasive material has been tacked, FIG. Its cross-sectional view, FIG. 6 is an enlarged longitudinal sectional front view showing the state of electrodeposition of the chain-like abrasive material, FIG. 7 is a partially longitudinal sectional side view of the grinding wheel of the present invention, and FIGS. FIG. 6 is a partially longitudinal side view showing different arrangement examples of chain-like abrasive materials. 1 is a metal section, 2 is an abrasive grain, 3 is a wire rod, 4 is a chain abrasive material,
5 is a base material, 6 is a groove, and 7 is an electrodeposited film.

Claims (1)

[Claims] 1. A plurality of abrasive grains are attached to a metal section in a single layer at the required concentration of abrasive grains, and the unit pieces are connected at approximately equal intervals with wire rods to form a chain-like abrasive material, which is then attached to a metal wheel-shaped matrix. on the surface of the material,
A cylindrical grinding wheel in which the cut piece or wire rod is placed in contact with the base material, and a chain-like abrasive material is bonded to the base material.