JP3111998U - Diamond cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency of a resin member in a diamond cutter provided with a grinding / polishing portion 3 formed by electrodepositing diamond abrasive grains on the outer peripheral side front and back surfaces and outer peripheral end surface of a circular substrate 2 provided with a mounting through hole 1 in the center. Realization of cutting.
SOLUTION: The outer peripheral edge is formed in a continuous wave shape having a substantially small semicircular protrusion 4 (the protrusion has a width of 7 to 11 mm and a protrusion length of 1 to 3 mm).
[Selection] Figure 1

Description

  The present invention relates to a diamond cutter that can be used optimally as a resin cutter in addition to being used for cutting stone, tile, concrete, and the like.

  The diamond cutter is formed by forming a cutting part containing diamond abrasive grains on the outer periphery of a circular substrate having a mounting through hole in the center. The diamond abrasive grains and alloy powder are mixed and fired, and the outer periphery of the circular substrate is used as a chip. There are known a cutting portion that is disposed on the front surface and a cutting portion by forming a diamond abrasive layer on the front and back and end faces of the outer peripheral portion of a circular substrate.

  Further, in addition to providing a radial notch for cooling on the outer periphery of the cutter, Patent Document 1 discloses a structure in which a notch recess is provided on the outer periphery for stone. Patent Document 2 discloses a cutter in which no irregularities are formed on the outer peripheral edge for cutting a steel sheet.

JP-A-9-29539. Japanese Patent Laid-Open No. 10-202538.

  By the way, the diamond cutter is used not only for stone and concrete but also for cutting PVC pipes that are frequently used for waterworks. However, when a conventional cutter is used for resin cutting, which is a soft material compared to stone or concrete, efficient cutting is not always performed.

  For example, the cutter of the outer peripheral edge without irregularities continues the cutting action while cutting is continuously in contact with the cutting edge all around the cutting edge, so clogging of the diamond abrasive surface occurs around the cutting edge. Cheap. Further, in a cutter in which a cutting efficiency is improved by forming a concave portion and cutting at a corner portion of the concave portion like a stone cutter, there is a risk of injury to a finger or a hand at the corner portion.

  Therefore, the present invention proposes a diamond cutter that can be cut efficiently and can be used safely even if the object to be cut is a resin plate or resin tube.

  The diamond cutter according to the present invention is a diamond cutter including a grinding and polishing portion formed by electrodepositing diamond abrasive grains on the outer peripheral side front and back surfaces and the outer peripheral end surface of a circular substrate having a mounting through hole in the center. The edge is formed in a continuous wave shape of a substantially small semicircular protrusion.

  Since the present invention adopts the above-described configuration, even if it is used for cutting a resin member, the chips are transported and discharged by the corrugated recess, and clogging hardly occurs. The cutting efficiency is increased by the portion, and the corner portion does not exist, so that it can be used safely.

  Next, an embodiment of the present invention will be described. FIG. 1 shows the case of a diamond cutter having a diameter of 100 mm.

  In this diamond cutter, diamond abrasive grains are electrodeposited on the front and back surfaces and the outer peripheral end surface of a circular substrate 2 provided with a mounting through hole 1 of a predetermined size in the center to form a cutting portion (grinding and polishing portion) 3. In particular, the shape of the substrate 2 is such that the outer peripheral edge is formed in a continuous wave shape with a substantially small semicircular protrusion 4 on the outer periphery thereof.

  In the illustrated example of the 100 mm diameter standard product, the specific dimension of the protrusion 4 is divided into 36 (10 degrees width) on the entire circumference, and the distance between the tip of the protrusion 4 and the recess that becomes the boundary between adjacent protrusions The distance in the diameter direction (projection length of the protrusion) is 2 mm. Of course, the present invention is not limited to the above dimensions, but the present invention can be used as long as the width of the projection is 7 to 11 mm and the projection length is within the range of 1 to 3 mm regardless of the standard size of the diamond cutter. This is sufficient for use as a resin cutter.

  Accordingly, the diamond cutter of the above embodiment cuts the resin member so that the resin member is wound by the protrusion 4 when cutting the resin member, so that the working efficiency is higher than that of a conventional cutter having a smooth surface (circular edge on the outer periphery of the substrate). It is improved and can be used safely compared to a stone cutter having an outer peripheral surface formed in a blade shape. Of course, other than the cutting process of the resin member, it can be used in the same manner as the conventional diamond cutter.

  Furthermore, when the rotation direction side of the protrusion is worn due to its use, turning the diamond cutter upside down and mounting it on a rotating tool can cut at the edge of the protrusion without wear, and has a better sharpness than a circular cutter. It can be maintained for a long time.

The front view of the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mounting through-hole 2 Circular substrate 3 Cutting part 4 Protrusion part

Claims (2)

  In a diamond cutter provided with a grinding and polishing portion formed by electrodepositing diamond abrasive grains on the outer peripheral side front and back surfaces and outer peripheral end surfaces of a circular substrate having a mounting through hole in the center, the outer peripheral edge is formed by a substantially small semicircular protrusion. A diamond cutter formed in a continuous wave shape.   The diamond cutter according to claim 1, wherein the protrusion has a width of 7 to 11 mm and a protrusion length of 1 to 3 mm.

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