CN214291166U

CN214291166U - Brazing metal cutting blade

Info

Publication number: CN214291166U
Application number: CN202023178624.2U
Authority: CN
Inventors: 赵亚庆; 李和鑫
Original assignee: Henan Fulaige Ultrahard Material Co ltd
Current assignee: Henan Fulaige Ultrahard Material Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-09-28
Anticipated expiration: 2030-12-25

Abstract

The utility model provides a brazing metal cutting piece, including metal substrate and wear-resisting cutting ring, this wear-resisting cutting ring by with the centre bore is wear-resisting cutting ring base portion at center with fix wear-resisting cutting ring base portion abrasive material layer on the surface constitutes, the equipartition has a plurality of cutting sawteeth in the outer fringe of wear-resisting cutting ring, two adjacent cutting saw intertooth orientation the sunken chip removal recess that forms of centre bore, it has a plurality of toper superhard abrasive material layers to distribute in the outside cambered surface of cutting sawtooth, and two adjacent toper superhard abrasive material layers highly different, and two adjacent toper superhard abrasive material layers separate through the chip removal clearance. Therefore, the high relative high toper superhard abrasive material layer that highly wears to certain degree in the above-mentioned brazing metal cutting piece exposes and participates in cutting work in the toper superhard abrasive material layer that highly is low relatively, so, can keep brazing metal cutting piece lasts sharpness, wear-resisting, is favorable to improving brazing metal cutting piece's work efficiency and life.

Description

Brazing metal cutting blade

Technical Field

The utility model relates to a superhard materials field of brazing, concretely relates to metal cutting piece brazes.

Background

The existing sawtooth type metal cutting blade utilizes the hardness of sawtooth higher than the hardness of the workpiece to be cut, and the cutting blade utilizes the friction force between the sawtooth and the workpiece to cut the workpiece under high-speed rotation. However, such blades have the disadvantage of being wear resistant but not sharp or sharp but not wear resistant.

For example, the utility model patent with application number CN2010202774292, applied by the hubei changli superhard materials limited company in 30/7/2010, discloses a diamond cutting blade, which comprises a base body with a central inner hole, wherein a plurality of base body side leaves are formed on the outer edge of the base body through a plurality of wind holes, each base body side leaf is fixedly connected with a diamond tool bit through a fixing piece on the side end of the base body side leaf, a chip removal groove is arranged on the diamond tool bit, the cross section of the tool bit is in a concave shape, and the part of the tool bit for cutting stone materials is only a protruded groove tooth. Therefore, the sharpness of the diamond cutting blade can be improved by 20-30%, and the service life of the diamond cutting blade can be increased by 10%. However, the edges of the diamond tips are arcuate and have limited sharpness.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a brazed metal cutting blade to overcome the above problems.

For this, the utility model provides a brazing metal cutting piece, including metal substrate, this metal substrate has the centre bore and is discoid, wherein, be provided with in metal substrate's the outer fringe with the centre bore is the wear-resisting cutting ring at center, this wear-resisting cutting ring by with the centre bore is wear-resisting cutting ring basal portion at center and fixes wear-resisting cutting ring basal portion is surperficial abrasive material layer constitutes, the equipartition has a plurality of cutting sawteeth in wear-resisting cutting ring's the outer fringe, two adjacent cutting saw intertooth orientation the centre bore is sunken to form the chip removal recess, the outside cambered surface of cutting sawtooth distributes and has a plurality of toper superhard abrasive material layers, and two adjacent toper superhard abrasive material layers's high difference, and two adjacent toper superhard abrasive material layers separate through the chip removal clearance.

Based on the above, the tapered superabrasive layer on each cutting tooth is divided into a high tapered superabrasive layer and a low tapered superabrasive layer according to height.

Based on the above, the tapered superabrasive layer on each cutting tooth is divided into a high tapered superabrasive layer, a medium tapered superabrasive layer, and a low tapered superabrasive layer according to height. The cutting saw teeth are provided with a plurality of cutting saw teeth, wherein the cutting saw teeth are provided with a plurality of cutting saw teeth, and the cutting saw teeth are provided with a plurality of cutting saw teeth. In addition, the tapered superhard abrasive layers on the cutting saw teeth can be alternately arranged in sequence according to the sequence of the high tapered superhard abrasive layer, the medium tapered superhard abrasive layer and the low tapered superhard abrasive layer.

Based on the above, the conical superhard abrasive layer is welded on the cutting saw tooth through a vacuum brazing mode. The tapered superabrasive layer is composed of superabrasive particles having a particle size of between 20 mesh and 120 mesh.

Based on the above, the abrasive layer is welded to the wear-resistant cutting ring base by means of vacuum brazing. The abrasive layer is composed of superabrasive particles having a particle size of 20-120 mesh. The utility model provides a height difference of two adjacent toper superhard abrasive material layers on the cutting sawtooth in the above-mentioned brazing metal cutting piece, the toper superhard abrasive material layer that highly is relatively high wearing and tearing to certain degree after highly is relatively low toper superhard abrasive material layer expose and participate in cutting work, so, can keep brazing metal cutting piece continuously sharp, wear-resisting, be favorable to improving the work efficiency and the life of brazing metal cutting piece; chip removal gaps between two adjacent conical superhard abrasive layers can play a chip removal role, so that cutting sawteeth are prevented from being blocked; the wear-resistant cutting ring plays a role in assisting cutting and avoiding workpiece clamping; the chip removal groove can play the roles of chip removal, cooling and avoiding workpiece burning. Therefore, the utility model provides a brazing metal cutting piece is not only wear-resisting but also sharp, can effectively improve the work efficiency and the life of cutting piece.

Drawings

Fig. 1 is a schematic structural diagram of a brazed metal cutting piece according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a brazing metal cutting sheet provided by the second embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a brazing metal cutting sheet provided by the third embodiment of the present invention.

Wherein the numerical symbols in the figures represent: 1 metal substrate, 12 centre holes, 2 wear-resisting cutting rings, 22 wear-resisting cutting ring base parts, 24 abrasive material layers, 3 cutting sawtooth, 32 high toper superhard abrasive material layers, 34 low toper superhard abrasive material layers, 36 in toper superhard abrasive material layers, 38 chip removal clearance, 4 chip removal recesses.

Detailed Description

The technical solution of the present invention will be described in further detail through the following embodiments. Wherein technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs; as used herein, "high", "low", and the like are used only to refer to the relative height of the tapered superabrasive layer, and as the absolute height of the object being described changes, the relative height relationship may change accordingly.

Example one

Referring to fig. 1, an embodiment of the present invention provides a brazing metal cutting blade, including a disk-shaped metal substrate 1 having a central hole 12 and a wear-resistant cutting ring 2 centered on the central hole 12.

The wear-resistant cutting ring 2 is fixed on the outer edge of the metal matrix 1. The wear-resistant cutting ring 2 is composed of a wear-resistant cutting ring base 22 and an abrasive layer 24 welded on the surface of the wear-resistant cutting ring base 22 through vacuum brazing. The wear-resistant cutting ring base 22 is arranged on the outer edge of the metal matrix 1 by taking the central hole 12 as a circle center. The abrasive layer 24 is composed of superabrasive particles having a particle size of 20-120 mesh.

A plurality of cutting sawteeth 3 are uniformly distributed on the outer edge of the wear-resistant cutting ring base 22, and the adjacent two cutting sawteeth 3 face to the center hole to form a chip removal groove 4 in a concave mode. The abrasive layer 24 covers the sides of the cutting teeth 3, the roots of the cutting teeth 3 and the bottom of the chip ejection groove 4. A plurality of high-cone-shaped superhard abrasive layers 32 and a plurality of low-cone-shaped superhard abrasive layers 34 are distributed on the outer arc surface of the cutting saw tooth 3, and the height of each high-cone-shaped superhard abrasive layer 32 is higher than that of each low-cone-shaped superhard abrasive layer 34. The height of the high tapered superabrasive layers 32 on the cutting teeth 3 is the same. The height of the low tapered superabrasive layer 34 on the cutting teeth 3 is the same. The high cone superabrasive layer 32 and the low cone superabrasive layer 34 are each composed of superabrasive particles having a particle size between 20 mesh and 120 mesh. In this embodiment, the superabrasive particles are diamond particles. The high cone superabrasive layers 32 and the low cone superabrasive layers 34 are arranged alternately, and adjacent high cone superabrasive layers 32 and low cone superabrasive layers 34 are separated by a chip evacuation gap 38. The chip evacuation gap 38 may be adjustable depending on the workpiece being cut.

Example two

Referring to fig. 2, a second embodiment of the present invention provides a brazing metal cutting sheet, which has a structure substantially the same as that of the first embodiment, and the main difference is that: in this embodiment, a plurality of high-cone-shaped superhard abrasive layers 32, a plurality of low-cone-shaped superhard abrasive layers 34 and a plurality of medium-cone-shaped superhard abrasive layers 36 are distributed on the outer arc surface of each cutting sawtooth 3, and the cutting sawteeth 3 are alternately arranged in sequence according to the sequence of the high-cone-shaped superhard abrasive layers 32, the medium-cone-shaped superhard abrasive layers 36, the low-cone-shaped superhard abrasive layers 34 and the medium-cone-shaped superhard abrasive layers 36. The height of the high tapered superabrasive layers 32 on the cutting teeth 3 is the same. The height of the low tapered superabrasive layer 34 on the cutting teeth 3 is the same. The height of the middle tapered superabrasive layer 36 on the cutting teeth 3 is the same. The heights of the high tapered superabrasive layer 32, the medium tapered superabrasive layer 36, and the low tapered superabrasive layer 34 decrease in sequence. Adjacent high taper superabrasive layers 32 and intermediate taper superabrasive layers 36, and adjacent intermediate taper superabrasive layers 36 and low taper superabrasive layers 34, are separated by chip evacuation gaps 38.

EXAMPLE III

Referring to fig. 3, a third embodiment of the present invention provides a brazing metal cutting sheet, which has a structure substantially the same as that of the brazing metal cutting sheet provided by the second embodiment, and the main difference lies in that: the conical superhard abrasive layers on the arc surface at the outer side of the cutting saw tooth 3 are alternately arranged in sequence according to the sequence of the high-conical superhard abrasive layer 32, the medium-conical superhard abrasive layer 36 and the low-conical superhard abrasive layer 34.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. A brazed metal cutting blade comprising a metal substrate having a central hole and being disc-shaped, characterized in that: be provided with in metal matrix's the outer fringe with the centre bore is wear-resisting cutting ring at center, this wear-resisting cutting ring by with the centre bore is wear-resisting cutting ring base portion at center with fix wear-resisting cutting ring base portion abrasive material layer on the surface constitutes, the equipartition has a plurality of cutting sawteeth in the outer fringe of wear-resisting cutting ring, two adjacent cutting saw intertooth orientation the centre bore is sunken to form the chip removal recess, it has a plurality of toper superhard abrasive material layers to distribute in the outside cambered surface of cutting sawtooth, and the high difference on two adjacent toper superhard abrasive material layers, and two adjacent toper superhard abrasive material layers separate through the chip removal clearance.

2. The brazing metal cutting sheet according to claim 1, wherein: the tapered superabrasive layer on each cutting tooth is divided into a high tapered superabrasive layer and a low tapered superabrasive layer by height.

3. The brazing metal cutting sheet according to claim 1, wherein: the cone-shaped superhard abrasive layer on the cutting saw tooth is divided into a high cone-shaped superhard abrasive layer, a middle cone-shaped superhard abrasive layer and a low cone-shaped superhard abrasive layer according to the height.

4. The brazing metal cutting sheet according to claim 3, wherein: the conical superhard abrasive layers on the cutting sawteeth are sequentially and alternately arranged according to the sequence of the high-conical superhard abrasive layer, the medium-conical superhard abrasive layer, the low-conical superhard abrasive layer and the medium-conical superhard abrasive layer.

5. The brazing metal cutting sheet according to claim 3, wherein: the conical superhard abrasive layers on the cutting sawteeth are sequentially and alternately arranged according to the sequence of the high conical superhard abrasive layer, the medium conical superhard abrasive layer and the low conical superhard abrasive layer.

6. The brazing metal cutting blade according to any one of claims 1 to 5, wherein: the tapered superabrasive layer is welded to the cutting teeth by vacuum brazing.

7. The brazing metal cutting sheet according to claim 6, wherein: the tapered superabrasive layer is composed of superabrasive particles having a particle size of between 20 mesh and 120 mesh.

8. The brazing metal cutting blade according to any one of claims 1 to 5, wherein: the abrasive layer is welded to the wear resistant cutting ring base by means of vacuum brazing.

9. The brazing metal cutting sheet according to claim 8, wherein: the abrasive layer is composed of superabrasive particles having a particle size of 20-120 mesh.