JP2005224920A - Method for manufacturing rotating saw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the occurrence of heat damages of a rotating saw and a material to be ground by reducing frictional resistance during cutting and to reduce the noise generated from the rotating saw. <P>SOLUTION: A large number of tips (14) are circumferentially fixed at prescribed pitches in the outer periphery of a disk-like base metal (11). The surface of the base metal (11) is coated with a fluorine resin (15). After that, a slit (16) extended from the inner peripheral side to the outer peripheral side is formed in the base metal (11) by laser machining. The slit (16) is filled with a viscoelastic resin (17). A prescribed rake angle (A) and a prescribed flank angle (C) or the like are formed by grinding the surface of the tip (14) after filling the viscoelastic resin (17). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a rotary saw for cutting a work such as wood, resin material, aluminum material, steel material and the like, and more particularly to a manufacturing method thereof.

When the base metal comes into contact with the work piece during cutting, the cutting surface of the base metal and the work piece is heated by the frictional heat, the base metal is thermally deformed, the work piece is discolored, and the cutting load is increased. Will increase. In order to alleviate this, conventionally, the surface of the base metal is covered with a polyfluoroethylene layer (fluororesin) as shown in FIGS. That is, as shown in FIGS. 9 and 10, a serrated blade base 2 on the outer periphery of the disk-shaped base metal 1, an outer peripheral slit 4 extending inwardly from the tooth bottom of the blade base 2, and the base metal 1. Inner peripheral slits 5 extending from the inner peripheral side toward the outer peripheral side are respectively formed in the intermediate peripheral part, and the cemented carbide chip 3 roughly processed is fixed to each of the blade bases 2.

Next, as shown in FIG. 11, after both sides of the base metal 1 are covered with the polyfluoroethylene layer 6, as shown in FIG. 12, the rake face 3a, the flank face 3b, and the both side faces 3c of the chip 3 are used. Is formed to form a tip blade 3-1 having a predetermined rake angle, clearance angle, side center angle, and the like to obtain a finished product, that is, a rotary saw.

JP-A-7-246601.

In the above conventional one, since the surface of the base metal 1 is covered with the polyfluorinated ethylene layer (fluororesin) 6, the frictional resistance between the base metal 1 and the work piece during cutting is reduced, and the base metal is reduced. It can reduce the thermal deformation of gold, discoloration of the work, etc. However, since the thermal expansion absorbing slits 4 and 5 formed in the base metal 1 are opened, vibration during cutting cannot be suppressed, and the slits 4 and 5 are not allowed to rotate when the rotary saw idles. Wind noise was generated and noise was likely to occur.

As a countermeasure against this, there is means for filling the slits 4 and 5 with a viscoelastic resin. However, in the conventional one, after the slits 4 and 5 are formed, the polyfluorinated ethylene layer 6 is formed on the surface of the base metal 1 ( 11), at the time of application, as shown in FIG. 11, the polyfluorinated ethylene 6a enters the slits 4 and 5, and the inner surface of the slits 4 and 5 is made to penetrate by the polyfluorinated ethylene 6a. Will be covered. Since this polyfluorinated ethylene 6a has high lubricity, even if the slits 4 and 5 are filled with a viscoelastic resin thereafter, the viscoelastic resin is not fixed to the polyfluorinated ethylene 6a and is not cut. It will leave the base in a short time due to vibrations. It is an object of the present invention to obtain a novel rotary saw manufacturing method that solves the above-mentioned problems.

The present invention is configured as follows to achieve the above object. That is, in the invention according to claim 1, a large number of chips are fixed to the outer periphery of a disk-shaped base metal at a predetermined pitch in the circumferential direction, and the surface of the base metal is covered with a fluororesin, and then the laser processing is performed. In the base metal, a slit extending from the inner peripheral side toward the outer peripheral side is formed, and the slit is filled with a viscoelastic resin.
According to a second aspect of the present invention, a large number of chips are fixed to the outer periphery of a disk-shaped base metal at a predetermined pitch in the circumferential direction, and the base metal surface is covered with a fluororesin, and then the base metal is processed by laser processing. A slit extending from the inner peripheral side to the outer peripheral side is formed, and the slit is filled with viscoelastic resin, and then the surface of the chip is ground to form a predetermined rake angle, clearance angle, etc. It is.

After the surface of the base metal is coated with a fluororesin, when a slit is formed in the base metal by laser processing, the base of the base metal is exposed on the inner surface of the slit. When the slit is filled with viscoelastic resin in this state, the viscoelastic resin is firmly fixed to the inner surface of the slit, and the viscoelastic resin does not detach from the slit due to vibration during cutting or thermal expansion of the base metal. . For this reason, the vibration of the base metal at the time of cutting and idling is efficiently suppressed over a long period of time, and noise is reduced. Further, the fluororesin covering the surface of the base metal can reduce the frictional heat between the base metal and the work piece during cutting, thereby preventing thermal deformation of the base metal and discoloration of the work piece.

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a side view of a rotary saw manufactured according to the present invention, FIGS. 2 to 8 show main manufacturing steps of the rotary saw according to the present invention, FIG. 2 is a side view of a base metal, and FIG. 4 is a partial side view in which a chip and a fluororesin are provided on gold, FIG. 4 is an enlarged sectional view of IV-IV in FIG. 3, FIG. 5 is a side view in which a slit is formed in a base metal, and FIG. 7 is a cross-sectional view corresponding to FIG. 6 in which a slit of a base metal is filled with a viscoelastic resin, and FIG. 8 is a partially enlarged side view of a chip ground.

In FIG. 1, reference numeral 10 denotes a rotary saw manufactured according to the present invention. A large number of chips 14 are fixed to the outer periphery of a base metal 11, and fluororesin (trade name; Teflon) 15 is baked and fixed to both surfaces of the base metal 11. In addition, slits 16 (16a, 16b) are formed in the outer peripheral portion and the middle peripheral portion of the base metal 11, and an epoxy-based viscoelastic resin 17 is filled in the slit 16.

The rotary saw 10 is manufactured as follows. First, as shown in FIG. 2, a steel plate material such as SKS-5, SK-5 or the like is subjected to press working or laser processing, and as shown in FIG. A disk-shaped base metal 11 is formed. Next, as shown in FIG. 3, after roughly brazing the cemented carbide chip 14 on the rotating surface side of each of the blade bases 12, the entire surface of both sides of the base metal 11 is fluorinated as shown in FIG. 4. Resin 15 is applied and fixed by baking.

Next, as shown in FIG. 5, a slit 16 for absorbing thermal expansion is formed in the base metal 11 by laser processing. That is, four outer peripheral slits 16a extending inwardly from the tooth bottom of the blade base 12 and four inner peripheral slits 16b extending from the inner peripheral side toward the outer peripheral side in the middle peripheral portion of the base metal 11 are formed in the circumferential direction. To do. In addition, the shape and the number of each inner circumferential slit 16a and outer circumferential slit 16b are appropriately set depending on the type and material of the workpiece. Further, the slit 16 may be formed only in one of the outer peripheral slit 16a and the inner peripheral slit 16b.

Next, as shown in FIG. 7, after the slits 16a and 16b are filled with the epoxy-based viscoelastic resin 17, the rake face 14a, the flank face 14b, and both side faces 14c of the chip 14 are formed as shown in FIG. By grinding, a tip blade 14-1 having a predetermined rake angle A, clearance angle C, side face centric angle (not shown) and the like is formed, and the rotary saw 10 shown in FIG. 1 is obtained.

According to the above embodiment, after the surface of the base metal 11 is coated with the fluororesin 15, the slits 16 (the outer periphery 16a and the inner peripheral slit 16b) are formed in the base metal 11 by laser processing. Will expose the background of the base 11. When the viscoelastic resin 17 is filled in the slits 16 a and 16 b in this state, the viscoelastic resin 17 is firmly fixed to the inner surface of the slit 16, and the viscoelastic resin 17 is resistant to vibration during cutting or thermal expansion of the base metal 11. The elastic resin 17 does not detach from the slit 16. For this reason, the vibration of the base 11 at the time of cutting and idling is efficiently suppressed over a long period of time, and noise is reduced. Further, the fluororesin 15 covering the surface of the base metal 11 can reduce the frictional heat between the base metal 11 and the work piece during cutting, thereby preventing thermal deformation of the base metal 11 and discoloration of the work piece. it can.

1 is a side view of a rotary saw manufactured according to the present invention. It is a side view of a base metal. It is the partial side view which provided the chip | tip and the fluororesin in the base metal. It is IV-IV expanded sectional drawing of FIG. It is the side view which formed the slit in the base metal. It is VI-VI expanded sectional drawing of FIG. It is sectional drawing equivalent to FIG. 6 which filled the slit of the base metal with viscoelastic resin. It is the partial expanded side view which ground the chip | tip. It is the partial side view which provided the chip | tip and the slit in the base metal which shows a prior art example. It is XX expanded sectional drawing of FIG. It is sectional drawing equivalent to FIG. 10 which fixed the fluororesin to the base metal by the past. It is a partial side view of the rotary saw which ground the chip | tip by the past.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Rotary saw 11 Base 12 Blade base 13 Mounting hole 14 Tip 14-1 Tip blade 15 Fluororesin 16 Slit 16a Outer periphery slit 16b Inner periphery slit 17 Viscoelastic resin A Rake angle C Clearance angle

Claims (2)

A number of chips (14) are fixed to the outer periphery of the disk-shaped base metal (11) at a predetermined pitch in the circumferential direction, and the surface of the base metal (11) is covered with a fluororesin (15), followed by laser processing. A slit (16) extending from the inner peripheral side toward the outer peripheral side is formed in the base metal (11), and the slit (16) is filled with a viscoelastic resin (17). Method. A number of chips (14) are fixed to the outer periphery of the disk-shaped base metal (11) at a predetermined pitch in the circumferential direction, and the surface of the base metal (11) is covered with a fluororesin (15), followed by laser processing. The base metal (11) is formed with a slit (16) extending from the inner peripheral side toward the outer peripheral side, and the slit (16) is filled with a viscoelastic resin (17), and then the surface of the chip (14) And a predetermined rake angle (A), clearance angle (C), and the like are formed by grinding the steel.

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