WO2008119299A1

WO2008119299A1 - Braze-welding diamond tool improved structure

Info

Publication number: WO2008119299A1
Application number: PCT/CN2008/070610
Authority: WO
Inventors: Xiaojun Zhang
Original assignee: Xiaojun Zhang
Priority date: 2007-03-30
Filing date: 2008-03-27
Publication date: 2008-10-09
Also published as: CN101274423A

Abstract

A braze-welding diamond tool improved structure, has diamond mill grain(2) and metallic basal body(l,3) comprising keywalls(12,31,34,35,14,15,16) setted in circumference. The diamond mill grain(2) is brazed in keywalls (12,31,34,35,14,15,16) of the metallic basal body(l,3) and is distributed along length direction of keywalls( 12,31,34, 35,14,15,16). The diamond mill grain(2) has the lean of the keywalls(12,31,34,35, 14,15,16) on both side walls, so the basal body(l,3) has higher hold to the diamond mill grain(2). The structure improves the useful time of the diamond tool, and increases the bareness height of the diamond mill grain(2). The structure improves the working efficiency of the diamond tool. The diamond mill grain(2) of the diamond tool is distributed close along the length direction of the keywalls(12,31,34,35,14,15,16), to form many close-connecting working linings, further improves the useful time.

Description

Instructions Improved structure of brazed diamond tools

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[1] The present invention relates to the field of hard and brittle material processing, and in particular to a diamond tool, which is widely used in single (multiple)

) Crystalline silicon and other high hardness crystals, stone cutting, and glass, ceramic, gemstone, and graphite processing industries.

[2] Currently available diamond tools can be generally divided into two types: single layer plating and multilayer sintering (including heat curing).

Due to the diversity and complexity of the actual grinding operation, the single-layer and multi-layer tools have their own advantages. Among them, the single-layer electroplated diamond tool is easy to manufacture due to the simple electroplating process; it does not need to be trimmed and sharpened, and is easy to use, so in the diamond tool Production applications have always occupied a large share. However, there is no strong chemical-metallurgical bond between the electrodeposited coating metal on the electroplated diamond tool and the interface between the abrasive and the abrasive substrate. The abrasive is only mechanically embedded between the plating layer and the substrate. Therefore, the metal plating layer has a small holding force on the diamond abrasive grains, and it is extremely easy to cause the overall failure of the grinding wheel due to the falling off of the abrasive and the peeling of the plating layer. In addition, due to the thick coating layer, the abrasive exposed height is low, and the chip space is small. The grinding wheel of the electroplated grinding wheel is easily broken due to the adhesion of the chip. At the same time, the effective utilization of the abrasive itself on the electroplated grinding wheel is also extremely low.

[3] In the early 1990s, foreign countries began to study the development of a new generation of single-layer brazed diamond tools by soldering instead of electroplating. The high-temperature brazing causes the solder to dissolve, diffuse, and combine at the interface between the diamond abrasive grains and the metal matrix. The interaction increases the holding force of the matrix on the diamond abrasive grains, and improves the bonding strength between the abrasive, the bonding agent (solder alloy) and the matrix. The structure generally comprises a metal substrate and a diamond abrasive grain, the periphery of the metal substrate is provided with a tooth groove and a water tank, and the diamond abrasive grains are brazed on both end faces of the metal substrate corresponding to the tooth groove, the brazed diamond tool, the diamond thereof The abrasive grains are brazed on both end faces of the substrate, and the holding force of the matrix on the diamond abrasive grains is still not ideal, so that the exposed height of the diamond abrasive grains is limited, thereby affecting the processing efficiency; and the diamond abrasive grains of the existing diamond tools are generally Single layer brazing, with only one layer of working layer, has a short service life.

[4] The object of the present invention is to provide a substrate having high holding power to diamond abrasive grains and high exposure of diamond abrasive grains.

Improved structure of brazed diamond tools with significantly improved service life and processing efficiency. [5] The technical solution of the present invention is as follows: an improved structure of a brazed diamond tool, comprising a diamond abrasive grain and a metal substrate having a tooth groove formed at a periphery thereof, wherein the diamond abrasive grain is brazed to the inner edge of the tooth groove of the metal substrate The length of the slots is arranged.

[6] The tooth groove is a through groove penetrating the thickness direction of the metal base.

[7] The tooth groove is a groove in which a portion of one surface of the metal substrate in the thickness direction is recessed toward the other side surface in the thickness direction of the metal substrate.

[8] The above grooves are wide grooves for accommodating a plurality of diamond abrasive grains in the width direction.

[9] The metal base body is a disk-shaped base body, and the tooth grooves are a plurality of substantially parallel circular arc-shaped slots formed in a periphery of the disk-shaped base body.

[10] The metal base body is a cylindrical base body, and the tooth grooves are a plurality of slots formed in a peripheral end of the cylindrical base body and parallel to a central axis of the cylindrical base body.

[11] The above metal substrate is provided with a water tank.

[12] The diamond abrasive grains are brazed to the portions of the metal substrate at the end faces of the respective tooth grooves

[13] After the above scheme, the improved structure of the brazed diamond tool of the present invention, since the diamond abrasive grains are brazed in the tooth gap, the diamond abrasive grains have the two side walls of the tooth gap and the base body is paired with the diamond grinding machine. The higher holding power of the granule not only improves the service life of the diamond tool, but also increases the exposed height of the diamond abrasive grain, thereby improving the processing efficiency of the diamond tool. Moreover, the diamond tool diamond abrasive grains of the present invention are closely arranged along the length direction of the tooth gap to form a plurality of closely connected working layers, thereby further improving the service life.

1 is a schematic view showing the structure of a base body according to a first embodiment of the present invention.

FIG. 2 is a schematic structural view of Embodiment 1 of the present invention.

₃ is a schematic structural view of a base body according to a second embodiment of the present invention.

FIG. 4 is a schematic structural diagram of Embodiment 2 of the present invention.

FIG. 5 is a schematic structural view of a third embodiment of the present invention.

6 is a schematic structural view of a fourth embodiment of the present invention.

FIG. ₇ is a schematic structural view of a base body according to Embodiment 5 of the present invention. FIG. 8 is a schematic structural diagram of Embodiment 5 of the present invention.

FIG. 9 is a schematic structural view of Embodiment 6 of the present invention.

FIG. 10 is a schematic structural view of a base body according to Embodiment 7 of the present invention.

Figure 11 is a schematic structural view of Embodiment 7 of the present invention.

12 is a schematic view showing the structure of a base body according to Embodiment 8 of the present invention.

Figure 13 is a schematic view showing the structure of a substrate according to a ninth embodiment of the present invention.

14 is a schematic view showing the structure of a base body according to Embodiment 10 of the present invention.

Figure 15 is a schematic structural view of an eleventh embodiment of the present invention.

16 is a schematic structural view of a twelfth embodiment of the present invention.

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[30] The improved structure of the brazed diamond tool of the present invention, as shown in FIG. 1 and 2, includes a thin disc-shaped steel base 1 and diamond abrasive grains 2, and a thin disc-shaped steel base 1 is opened at the center. The shaft hole 11 has a plurality of approximately parallel arc-shaped slots 12 uniformly formed on the circumference, and one end of the slot 12 extends through the periphery of the thin disc-shaped steel base 1 and the other end points to the thin disc-shaped steel. In the middle of the base 1, a plurality of approximately parallel teeth are formed, and the diamond abrasive grains 2 are brazed in the slots 12 and closely arranged along the length of the slots 12. In this embodiment, the diameter of the diamond tool is 10 mm-300 mm, the thickness of the thin disk-shaped steel substrate 1 is 0.1 mm-lmm, the diameter of the shaft hole 11 is 3 mm-80 mm, and the thickness of the tooth is 0.1-2 mm. The width is 0.5-10 mm, and the width of the slot 12 is 0.1-0.6 mm.

[31] The improved structure of the brazed diamond tool of the present invention, as shown in FIGS. 3 and 4, includes a thin disc-shaped steel base 1 and diamond abrasive grains 2, and a thin disc-shaped steel base 1 is opened at the center. The shaft hole 11 has a plurality of approximately parallel arc-shaped slots 12 and a water tank 13 uniformly formed on the circumference, and one end of the slot 12 extends through the periphery of the thin disc-shaped steel base 1 and the other end points to a thin circle. In the middle of the disk-shaped steel base 1, the diamond abrasive grains 2 are brazed in the slots 12 and closely arranged along the longitudinal direction of the slots 12. In this embodiment, the diameter of the diamond tool is 10 mm-300 mm, the thickness of the thin disk-shaped steel substrate 1 is 0.1 mm-lmm, the diameter of the shaft hole 11 is 3 mm-80 mm, and the thickness of the tooth is 0.1-2 mm. The width is 0.5-10 mm and the width of the gullet 12 is 0.1-0.6 mm.

[32] The improved structure of the brazed diamond tool of the present invention, the third embodiment is shown in FIG. 5, which is based on the first embodiment on both end faces of the thin disc-shaped steel substrate 1 between the slots 12 Brazed with diamonds Abrasive grain 2. In this embodiment, the diameter of the diamond tool is 10 mm-300 mm, the thickness of the thin disk-shaped steel substrate 1 is 0.1 mm-lmm, the diameter of the shaft hole 11 is 3 mm-80 mm, the thickness of the tooth is 0.1-2 mm, and the width of the tooth It is 0.5-10 mm and the width of the gullet 12 is 0.1-0.6 mm.

[33] The improved structure of the brazed diamond tool of the present invention, the fourth embodiment is shown in FIG. 6, which is based on the second embodiment on both end faces of the thin disc-shaped steel substrate 1 between the slots 12 The diamond abrasive grains 2 are brazed separately. In this embodiment, the diameter of the diamond tool is 10 mm-300 mm, the thickness of the thin disk-shaped steel substrate 1 is 0.1 mm-lmm, the diameter of the shaft hole 11 is 3 mm-80 mm, the thickness of the tooth is 0.1-2 mm, and the width of the tooth It is 0.5-10 mm and the width of the gullet 12 is 0.1-0.6 mm.

[34] The improved structure of the brazed diamond tool of the present invention, as shown in FIGS. 7 and 8, includes a thin cylindrical steel base 3 and diamond abrasive grains 2, one end of a thin cylindrical steel base 3 A plurality of axial straight tooth grooves 31 and a water tank 33 are evenly opened at the circumference, and one end of the straight tooth groove 31 in the longitudinal direction penetrates the periphery of the thin cylindrical steel base 3 end, and the other end points to the thin cylindrical steel base 3 At the other end, the other end of the thin cylindrical steel base 3 is an axial straight shank 32, and the diamond abrasive grains 2 are brazed in the straight gullets 31 and closely arranged along the longitudinal direction of the straight gullets 31.

[35] The improved structure of the brazed diamond tool of the present invention, the sixth embodiment is shown in FIG. 9, which is based on the fifth embodiment on the inner and outer end faces of the thin cylindrical steel base 3 at each of the straight gullets 31. Diamond abrasive grains 2 are brazed to the respective portions.

[36] The improved structure of the brazed diamond tool of the present invention, as shown in Figs. 10 and 11, includes a thin cylindrical steel base 3 and diamond abrasive grains, and one end of the thin cylindrical steel base 3 A plurality of axial straight tooth grooves 34 are uniformly opened, and one end of the straight tooth groove 34 in the longitudinal direction penetrates the periphery of the thin cylindrical steel base 3 end, and the other end points to the other end of the thin cylindrical steel base body 3, The other end of the thin cylindrical steel base 3 is an axial straight shank 32, and the diamond abrasive grains are brazed in the straight gullets 34 and arranged along the longitudinal direction of the straight gullets 34. The spur groove 34 is a portion of one side surface in the thickness direction of the thin cylindrical steel base 3, which is recessed in the thickness direction of the thin cylindrical steel base 3 to the bottom of the groove and flush with the other side surface. slots, both straight cogging 34 distributed in the surface 3 of the cylindrical steel sheet thickness direction of the base body and both side surfaces ₃₄ of the straight cogging sequentially spaced, straight alveolus 34 is a widthwise accommodate multiple pieces of diamond abrasive grains Wide slot. In the present embodiment, diamond abrasive grains may be brazed as needed between the inner and outer end faces of the thin cylindrical steel base 3 at the respective straight tooth grooves 34 as needed.

[37] The improved structure of the brazed diamond tool of the present invention, the eighth embodiment is shown in FIG. 12, and the seventh embodiment The difference is that the straight tooth groove 35 is a non-shear groove in which a portion of one side surface in the thickness direction of the thin cylindrical steel base body 3 is recessed toward the other side surface in the thickness direction of the thin cylindrical steel base body 3 ( Stretching groove).

[38] The improved structure of the brazed diamond tool of the present invention, the structure of the ninth embodiment is as shown in FIG. 13, the thin disc-shaped steel base body 1 is provided with a shaft hole 11 at the center, and a plurality of sector-shaped slots are uniformly opened at the periphery. 14. The tooth groove 14 is a thin disc-shaped steel base body 1 in a thickness direction of a portion of one surface thereof is recessed in the thickness direction of the thin disc-shaped steel substrate 1 to the bottom of the groove and flush with the other side surface The grooves, the gullets 14 are distributed on both side surfaces in the thickness direction of the thin disk-shaped steel base body 1 and the gullets 14 on both side surfaces are sequentially spaced. One end of the slot 14 in the longitudinal direction penetrates the periphery of the thin disc-shaped steel base 1, and the other end points toward the middle of the thin disc-shaped steel base 1, and a plurality of teeth are formed. The diamond abrasive grains are brazed in the slots 14 and arranged along the length of the slots 14, and the slots 14 are wide slots for accommodating a plurality of diamond abrasive grains in the width direction. In the present embodiment, diamond abrasive grains may be brazed to the portions between the respective tooth grooves 14 on both end faces of the thin disk-shaped steel base member 1.

[39] The improved structure of the brazed diamond tool of the present invention, the structure of the tenth embodiment is as shown in FIG. 14, the thin disc-shaped steel base body 1 is provided with a shaft hole 11 at the center, and a plurality of sector-shaped slots are uniformly opened at the periphery. 15. The tooth groove 15 is a non-shearing groove in which a portion of one side surface in the thickness direction of the thin disk-shaped steel substrate 1 is recessed toward the other side surface in the thickness direction of the thin disk-shaped steel substrate 1 (stretching The groove 15 is distributed on both side surfaces in the thickness direction of the thin disk-shaped steel base body 1 and the tooth grooves 15 on both side surfaces are sequentially spaced. One end of the tooth groove 15 in the longitudinal direction penetrates the periphery of the thin disk-shaped steel base 1, and the other end points toward the middle of the thin disk-shaped steel base 1, to form a plurality of teeth. The diamond abrasive grains are brazed in the gullet 15 and arranged along the length of the gullet 15, and the gullet 15 is a wide groove which can accommodate a plurality of diamond abrasive grains in the width direction. In the present embodiment, diamond abrasive grains may be brazed as needed between the end faces of the thin disk-shaped steel base 1 at the respective tooth grooves 15.

[40] The improved structure of the brazed diamond tool of the present invention, the structure of the eleventh embodiment is as shown in FIG. 15, and includes a thin disc-shaped steel base 1 and diamond abrasive grains 2, and a thin disc-shaped steel base 1 center A shaft hole 11 is opened, and a plurality of approximately parallel arc-shaped slots 16 are uniformly formed on the circumference, and the slot 16 is a thin disc-shaped steel base body 1 in a thickness direction of a side surface thereof along a thin disc shape The non-shear groove (stretching groove) of the steel base body 1 is recessed toward the other side surface in the thickness direction, and the tooth groove 16 is distributed on both side surfaces in the thickness direction of the thin disc-shaped steel base body 1 and the cogging on both side surfaces 16 are set in order. One end of the tooth groove 16 in the longitudinal direction penetrates the periphery of the thin disc-shaped steel base body 1 and the other end points toward the middle of the thin disc-shaped steel base body 1, forming a plurality of approximately parallel teeth, and the diamond abrasive grains 2 are brazed to the teeth. The grooves 16 are closely arranged in the longitudinal direction of the tooth grooves 16. In this embodiment Further, diamond abrasive grains may be brazed as needed between the respective end faces of the thin disc-shaped steel base body 1 between the respective slots 16.

The improved structure of the brazed diamond tool of the present invention, the structure of the twelfth embodiment is as shown in Fig. 16, which is provided with a plurality of water tanks 13 spaced apart from each other on the periphery of the thin disc-shaped steel base body 1 based on the ninth embodiment. .

Claims

Claim

[1] 1. An improved structure of a brazed diamond tool, comprising a diamond abrasive grain and a metal substrate having a tooth groove formed at a periphery thereof, wherein: the diamond abrasive grain is brazed in the tooth groove of the metal substrate along the tooth groove Arranged in the length direction.

[2] The improved structure of the brazed diamond tool according to claim 1, wherein the tooth groove is a through groove penetrating the thickness direction of the metal substrate.

[3] The improved structure of the brazed diamond tool according to claim 1, wherein: the tooth groove is a portion of one side surface of the metal substrate in the thickness direction of the metal substrate, and is recessed toward the thickness direction of the metal substrate a groove on one side of the surface.

[4] 4. The improved structure of the brazed diamond tool according to claim 3, wherein: said groove is a wide groove for accommodating a plurality of diamond abrasive grains in the width direction.

[5] The improved structure of the brazed diamond tool according to any one of claims 1 to 3, wherein: the metal base is a disc-shaped base, and the tooth groove is formed in the disc-shaped base. A plurality of approximately parallel arcuate slots on the circumference.

[6] The improved structure of the brazed diamond tool according to any one of claims 1 to 3, wherein the metal base is a cylindrical base, and the tooth groove is formed in the cylindrical base. a plurality of slots circumferentially parallel to the central axis of the cylindrical substrate.

[7] 7. The improved structure of the brazed diamond tool according to any one of claims 1 to 3, characterized in that: the metal substrate is provided with a water tank.

[8] 8. The improved structure of the brazed diamond tool according to any one of claims 1 to 3, characterized in that: the end faces of the metal base body are brazed to the portions between the respective tooth grooves Diamond abrasive particles.