CN201394893Y

CN201394893Y - Diamond tool bit

Info

Publication number: CN201394893Y
Application number: CN2009201023240U
Authority: CN
Inventors: 王守兴; 李建民; 李春红; 李伟; 崔学彬
Original assignee: Hebei Husqvarna Jikai Diamond Tools Co Ltd
Current assignee: Hebei Husqvarna Jikai Diamond Tools Co Ltd
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2010-02-03
Anticipated expiration: 2019-03-31

Abstract

The utility model discloses a diamond tool bit, which comprises a transition layer connected with a basic body, and a cutting work layer formed by sintering mixed powder made of diamonds and metal powders, wherein the transition layer is formed by processing steels, particularly medium/low carbon steel materials, and low carbon alloy steel material. A groove is formed at the joint of the transition layer and the cutting work layer, and the transition layer and the cutting work layer are integrated in a sintering manner. Since the transition layer of the utility model adopts steels, both the funds for purchasing metal powders and procedures of mixing metal powders can be saved through batch processing, and the cost is reduced. The welding performance of the low carbon steels is good, the bonding strength of the tool bit and the basic body can be ensured, and the welding in a plurality of manners, such as brace welding, laser welding, and the like can be applied. The material working asthe work layer can be led to the groove formed on the transition layer when the pressing or the sintering are conducted, so that the bonding strength of the tool bit and the basic body is further enhanced.

Description

A kind of diamond tool cutter head

Technical field

The utility model relates to the instrument that a kind of machining of non-metallic material is used, especially a kind of cutter head that hard crisp nonmetallic materials is carried out the diamond tool of usefulness such as grinding, cutting, boring.

Background technology

At present, diamond tool is widely used in the processing to hard crisp nonmetallic materials (as stone material, cement products).Diamond tool generally is made up of the matrix of Bit tool and tool.Cutter head and matrix generally link together by welding methods such as soldering, Laser Welding, and also some instrument directly links together cutter head and matrix by sintering processing.

The cutter head of general diamond tool is made up of transition zone and cutwork layer, transition zone and cutwork layer all are to adopt the sintering method manufacturing of metal dust by powder metallurgy, the cutwork layer generally is mixed powder or other hard material that adopts diamond and metal powder to make, transition zone then adopts Fe, Co, the powder that Ni powder or other are convenient to weld, at first will and join in the mould respectively in the pressing process before sintering as the diamond mixed powder of cutwork layer as the metal dust of transition zone, form the parison of cutter head then through pressurization, more this parison is carried out sintering.Such cutter head need be selected the powder of properly mixed transition zone and cutwork layer and suitable pressuring method, the quantity that needs each formulated component powder of careful weighing when not only preparing powder, also to fully stir powder, if mix inhomogeneously, then may influence the welding performance or the bonding strength of cutter head.And when the cutter head of this structure welds at the metallic matrix with instrument, also require to have the welding condition of comparison harshness, generally should use soldering or Laser Welding mode to weld.In addition, we know, the manufacturing cost of metal dust is than higher, and the price of metal dust is than high many of the price of steel commonly used.The cost height of therefore this saw blade, and poor with the material welding performance of the transition zone of matrix welding make cutter head and saw bit matrix bond strength not as the bond strength height of steel after welding, so cutter head is insecure, falls cutter head easily, and security is not good enough.

The utility model content

The utility model technical issues that need to address provide the cutter head that a kind of low cost of manufacture can have best welding performance with the diamond tool matrix.

For solving the problems of the technologies described above, the technical scheme that the utility model adopted is:

A kind of diamond tool cutter head, comprise transition zone that is connected with tool base and the cutwork layer that forms by the mixed powder sintering that diamond and metal powder are made, the shape that with matrix cooperate of transition zone for processing with steel, transition zone and cutwork layer link into an integrated entity by sintering processing.Cutter head is welded on the tool base.

During the used steel of transition zone of the present utility model are preferred, low-carbon steel material or in, the low-carbon alloy steel material.

Further improvement of the utility model is: transition zone is provided with groove with the position that the cutwork layer combines, and purpose is to increase the mixed powder that diamond and metal powder make and the contact area of transition zone.

Owing to adopted technique scheme, the obtained technological progress of the utility model is:

Owing to adopted the transition zone of general steel as cutter head and matrix, thereby can use the steel pipe or the steel plate of low price wide material sources, then transition zone is processed into and the fixing corresponding shape of shape of the position of cutter head of tool base, can produces this transition zone by the machining mode is a large amount of like this.After transition zone makes steel into by original metal dust, do not re-use powder such as original Fe, Co, Ni as transition zone, saved the fund of buying metal dust, saved the operation of mixing metal dust simultaneously, also no longer need the powder of weighing during the compacting parison, therefore reduced cost of material and manufacturing cost as transition zone.The transition zone that steel replace powder-type has not only reduced cost, and since the density of steel greater than the density of metal dust, the mechanical performance of steel is than high many of the mechanical performance of the metal dust of sinter molding, thereby the intensity of transition zone is improved greatly, also increased the bonding strength of cutter head and tool base; And adopt the low-carbon (LC) steel not only can guarantee cutter head and high base strength, and can utilize the better weldability of mild steel.Cutter head of the present utility model can use multiple modes such as soldering or Laser Welding to weld.The groove that is provided with on the transition zone can make the dusty material as the cutwork layer enter in the groove, and the mixed powder that increase diamond and metal powder are made and the contact area of transition zone make the connection of transition zone and cutwork layer more firm.

Description of drawings

Fig. 1 is the partial structurtes schematic diagram after the utility model manufactures a kind of diamond saw blade.

Fig. 2 is a schematic diagram of the present utility model.

Fig. 3 is the partial structurtes schematic diagram after the utility model manufactures a kind of hollow boring bit.

Wherein: 1, cutwork layer, 2, transition zone, 3, matrix.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further details:

Embodiment 1

Fig. 1 is a kind of schematic diagram of diamond saw blade, and Fig. 2 is the cutter head schematic diagram.This cutter head comprises mixed powder sintering cutwork layer 1 that forms and the transition zone of being made by diamond and metal powder 2 that is connected with tool base 3, transition zone 2 usefulness steel process, its shape cooperates with matrix 3, transition zone 2 and cutwork layer 1 link into an integrated entity by sintering processing, the outside of transition zone 2 has groove, the one side that has groove links into an integrated entity with cutwork layer 1, cutter head is welded on the tool base 3 can forms saw blade then.During the used steel of transition zone are preferred, low-carbon steel material or in, the low-carbon alloy steel material.

Embodiment 2

Fig. 3 is the head construction schematic diagram of hollow boring bit.Drill bit is made up of matrix 3 and cutter head among the figure, and cutter head is in the same place by transition zone 2 and cutwork layer 1 sintering, and transition zone 2 welds together with matrix 3.

Be that each is an example with a kind of diamond cut saw blade and hollow boring bit above, structure of the present utility model has been described.The utility model can also be connected with instruments such as the saw blade of other form, drill bit, abrasive discs.

Claims

1, a kind of diamond tool cutter head, comprise transition zone that is connected with tool base and the cutwork layer that forms by the mixed powder sintering that diamond and metal powder are made, it is characterized in that: the shape that with base shape cooperate of transition zone for being made by steel, transition zone and cutwork layer link into an integrated entity by sintering processing.

2, a kind of diamond tool cutter head according to claim 1, it is characterized in that described transition zone adopt in, low-carbon steel material or in, the low-carbon alloy steel material makes.

3, according to claim 1 or 2 described a kind of diamond tool cutter heads, it is characterized in that described transition zone is provided with groove with the position that the cutwork layer combines.