JP2607083B2 - Endless cutter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to an electroless endless cutter for cutting or grooving a workpiece by orbiting between pulleys.

[Conventional technology]

Endless cutters such as band saws and belt saws are widely used for cutting wafers or grooving and cutting ceramic, ferrite, glass, and precious metals. As shown in FIG. 5, this type of endless cutter forms a hollow band 1 by joining both ends of a steel band-shaped plate by welding or the like. An abrasive grain cutting edge 2 having a U-shaped cross section as shown in FIG. 4 is formed.

Generally, this type of endless cutter 3 is hung on a driving pulley 4 and a driven pulley 5, receives driving force from the driving pulley 4, and runs around between the pulleys 4 and 5. By pressing the workpiece 6 against the abrasive grain cutting edge 2 during this round traveling, desired processing of cutting or grooving of the workpiece 6 is achieved.

[Problems to be solved by the invention]

However, in the above-mentioned conventional endless cutter, since both ends of the band 1 are joined by welding or the like, there is a problem that unevenness or a step is generated at the joint 9, which adversely affects the processing accuracy. Also,
The mechanical strength of the seam 9 is lower than that of other smooth portions, so that there is an inconvenience that a band is broken from the seam 9.

Further, since the abrasive grain cutting edge 2 is configured to be fitted into the band 1 made of a metal plate, the band 1 itself has a thickness, and the abrasive grain cutting edge 2 is fitted therein. There is an inconvenience that the thickness becomes considerably thick and a thin groove cutting process cannot be performed. Furthermore, when processing an expensive workpiece 6 such as a noble metal, a large cutting margin must be necessarily taken, which causes a problem that the economic loss increases.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to eliminate the deterioration of processing accuracy and strength reduction caused by a seam of a band, and to reduce the thickness of an abrasive cutting edge. An object of the present invention is to provide an endless cutter capable of performing extremely fine groove processing without any trouble.

[Means for solving the problem]

The present invention is configured as follows to achieve the above object. That is, the endless cutter according to the present invention has a seamless hollow band-shaped abrasive grain cutting layer formed by electroforming and holding abrasive grains in a base metal. A seamless metal layer that reinforces the abrasive cutting edge layer is provided on one side surface, and is formed as a seamless laminated band body of the abrasive cutting edge layer and the metal layer. The cutting edge layer is formed to be narrower in width than the cutting edge layer and covers the side surface of the abrasive grain cutting edge layer except for the cutting edge portion of the abrasive grain cutting edge layer.

(Operation)

In the present invention configured as described above, the hollow band-shaped abrasive grain cutting edge layer produced by electroforming and the metal layer laminated and formed on the side face have no seams at all, and the side face of the abrasive grain cutting edge layer Is extremely flat without any irregularities or steps. Therefore, high-precision precision processing can be performed, and furthermore, the blade thickness can be made extremely thin, so that extremely fine groove processing can be performed. Further, since the abrasive cutting edge layer is reinforced by the metal layer, the mechanical strength required for cutting and grooving is sufficiently provided.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 show embodiments of various aspects of the present invention. In the figure, the abrasive cutting edge layer 7 is a hollow band body formed seamlessly by electroforming.
And grown by precipitation. The metal layers 8, 8a and 8b shown in FIGS. 1 and 2 are deposited and grown on one or both side surfaces of the core abrasive grain cutting layer 7 except for the cutting edge 10 of the abrasive grain cutting edge layer 7. Is used to reinforce the mechanical strength of the abrasive cutting edge layer 7. As described above, in each embodiment of FIGS. 1 and 2, the abrasive cutting edge layer 7 and the metal layers 8, 8
An endless cutter is constituted by the laminates a and 8b, and the endless cutter is manufactured as follows.

First, in the manufacture of the endless cutter shown in FIG. 1, as shown in FIG. 3, first, a cylindrical ring-shaped matrix 11 is covered with an insulator 12 except for an inner peripheral surface, and this coating treatment is performed. The matrix 11 is immersed in, for example, an electroforming solution containing nickel sulfate and abrasive grains, and electroforming is performed by a known means. By this electroforming process, the base metal Ni
, And a mixture of the abrasive grains is electrodeposited to form a seamless band-like abrasive grain cutting layer 7 having a hollow band shape.

Next, the matrix 11 is removed from the electroforming solution, and the cutting edge portion of the abrasive grain cutting blade layer 7 is coated with an insulator 13. The coated matrix 11 is then subjected to a Ni electroforming solution containing no abrasive grains. It is immersed in it and electroformed. By this electroforming process, a Ni metal layer 8 is electrodeposited on one side surface of the abrasive cutting edge layer 7 except for the cutting edge portion. After the electroforming treatment, the insulator 13 is removed, and the electrodeposition product formed of the laminated band body of the abrasive cutting edge layer 7 and the metal layer 8 is peeled off from the matrix 11 to obtain the endless cutter shown in FIG. Will be obtained.

The endless cutter shown in FIG. 2 is formed by electrodeposition as follows. That is, for example, after the endless cutter shown in FIG. 1 is formed as described above, the non-electrodeposited portion (the metal layer 8a and the cutting edge 10) is covered with an insulating material, and is placed in a Ni electroforming bath containing no abrasive grains. If the required electroforming process is performed, the target Ni metal layer 8b is electrodeposited on the peripheral surface of the abrasive cutting edge layer 7,
The endless cutter shown in FIG. 2 is obtained.

As described above, the endless cutter of this embodiment can be obtained by electrodepositing the abrasive cutting edge layer 7 and the metal layers 8, 8a, 8b by electroforming. By forming the endless cutter by electroforming in this way, the endless cutter which is always formed in the conventional example does not have any seam, so that the surface of the endless cutter (abrasive layer) has no irregularities or steps, and the endless cutter has no irregularities. Thus, a flat cutting edge side surface can be obtained, thereby achieving high-precision precision machining. In addition, the endless cutter of the present embodiment has no mechanical joint and is reinforced by the metal layers 8, 8a, 8b, so that it has sufficient mechanical strength.

Furthermore, since the abrasive grain cutting layer 7 is formed by electroforming, the blade thickness of the cutting edge 10 can be formed extremely thin (in the present embodiment, a thickness of 20 μm to 30 μm), so that the endless cutter shown in FIGS. By using this, an extremely fine groove can be machined, and in this case, the cutting margin can be narrowed, so that when machining an expensive workpiece, the economic loss can be reduced.

In the above embodiment, the abrasive layer 7 and the metal layers 8 and 8 were used.
Although a and 8b were formed by electroforming based on Ni, the present invention is not necessarily limited to this, and other metals,
For example, electroforming may be performed using a desired metal such as copper or chromium as a base.

In this embodiment, the abrasive cutting edge layer 7, the metal layer 8,
8a and 8b were both formed by electroforming, but the metal layers 8, 8a,
8b can be formed as a seamless layer by other means, for example, vapor deposition or sputtering.

Further, in the above-described embodiment, the cutting edge 10 is formed so as to protrude from one edge of the endless cutter. However, it may be formed so as to protrude from both edges of the endless cutter.

〔The invention's effect〕

Since the present invention is configured as described above, since there is no occurrence of a seam in the endless cutter formed as a laminated band body of the abrasive cutting edge layer and the metal layer, there is no unevenness of the seam In addition, the side surface of the cutting edge is also extremely flat due to electroforming, thereby enabling high-precision precision machining.

Also, the abrasive grain cutting edge layer can be formed thinly, and the cutting edge of this abrasive grain cutting edge layer is exposed and protrudes outward from the end face of the metal layer, so that an extremely fine groove can be processed, and Since the cutting allowance can be narrowed, the economic loss in processing an expensive workpiece can be reduced. In addition, since the abrasive cutting edge layer is seamless and is also reinforced by a seamless metal layer, it is possible to have necessary and sufficient mechanical strength in performing cutting and groove processing.

[Brief description of the drawings]

1 and 2 are cross-sectional views showing examples of various aspects of the endless cutter according to the present invention, FIG. 3 is an explanatory view showing an example of electroforming the endless cutter according to the present invention, and FIG.
FIG. 5 is a sectional view showing a conventional endless cutter, and FIG. 5 is an explanatory view showing a use state of the endless cutter. 1 ... Band, 2 ... Abrasive cutting edge, 3 ... Endless cutter, 4 ... Drive pulley, 5 ... Driving pulley, 6 ...
Workpiece, 7 ... Abrasive cutting blade layer, 8, 8a, 8b ... Metal layer, 9 ... Seam, 10 ... Cutting edge, 11 ... Matrix, 12,13 ...
…Insulator.

Claims (2)

(57) [Claims] An abrasive grain cutting edge layer having a seamless hollow band shape formed by holding an abrasive grain on a base metal formed by electroforming, and having at least one side of the abrasive grain cutting edge layer. A seamless metal layer that reinforces the abrasive cutting edge layer is provided on the side surface, and is formed as a seamless laminated band body of the abrasive cutting edge layer and the metal layer. An endless cutter formed so as to have a narrow width and to cover a side surface of the abrasive grain cutting edge layer except for a cutting edge portion of the abrasive grain cutting edge layer. 2. The endless cutter according to claim 1, wherein the metal layer is constituted by a metal plating layer.