CN201300369Y

CN201300369Y - Quick-speed grinding abrading block

Info

Publication number: CN201300369Y
Application number: CNU2008202276675U
Authority: CN
Inventors: 李伟; 李建民; 李树峰; 崔学彬
Original assignee: Hebei Husqvarna Jikai Diamond Tools Co Ltd
Current assignee: Hebei Husqvarna Jikai Diamond Tools Co Ltd
Priority date: 2008-12-04
Filing date: 2008-12-04
Publication date: 2009-09-02
Anticipated expiration: 2018-12-04

Abstract

The utility model discloses a quick-speed grinding abrading block, belonging to tools of grinding categories, and comprises a basal body (1), a sintered diamond cutter head (2B) fixed on the bottom face of the basal body and a PCD cutter head (2A) which is further fixed in front of the sintered diamond cutter head. The PCD cutter head (2A) is welded in a chute (1A), the sintered diamond cutter head (2B) is welded in a flat groove (1B), the chute (1A) is in a reversed V shape which is wide at one side and narrow at the other end, and the PCD cutter head (2A) is arranged higher than the sintered diamond cutter head (2B). In the utility mode, the same abrading block is used to process one time in order to complete two procedures of rough grinding and fine grinding, which largely enhances the production efficiency, overcomes the defect that the ordinary abrading block only relies on the cutter head and a welding plane of the basal body to bear the cutting force, substantially increases the connecting intensity between the cutter head and the basal body, and solves the problem of ordinary falling off of the cutter head.

Description

A kind of rapid stock-removal abrading block

Technical field

The utility model relates to a kind of instrument of grinding class, refers in particular to a kind of diamond grinding block, and it is widely used in the grinding to fragile materials such as various concrete.

Background technology

During to the grinding of fragile materials such as various concrete, often use a kind of grinding tool of diamond segment.The cutter head of existing grinding DLC goods generally all is to be mixed after Thermocompressed sintering and forming by diamond particles and metal dust, and mostly cutter head is to be welded on the bottom surface of a metallic matrix through high-frequency heating.The process-cycle of making this diamond grinding block is longer, and in use, because all diamond segments all carry out same grinding work, all cutter heads all participate in corase grind during corase grind, and all cutter heads finish grind during correct grinding, and its production efficiency is lower.Especially cutter head is on sintering or the plane that is welded on matrix, only combines by weld force between cutter head and the matrix, and its welding quality instability comes off easily, so service life is shorter.

The utility model content

That the utility model technical issues that need to address provide is that a kind of corase grind and correct grinding are finished simultaneously, the abrading block of production efficiency height, long service life.

For solving the problems of the technologies described above, technical solution adopted in the utility model is:

A kind of rapid stock-removal abrading block, this abrading block is made up of matrix, polycrystalline diamond (PCD) cutter head, sintered diamond cutter head, and substrates has the conical surface body that is connected with equipment for grinding.Sintered diamond cutter head and PCD cutter head all are arranged on the bottom surface of matrix, the direction of advance of module grinding during according to work, and the PCD cutter head is positioned at the place ahead of sintered diamond cutter head.

Further improvement of the utility model is: be provided with the fixedly skewed slot of PCD cutter head on matrix, be provided with fixedly rising as high as the banks of sintered diamond cutter head in the back of skewed slot.Skewed slot is the narrow V-type of a hem width on one side, the bottom surface of skewed slot and matrix forms an angle, the PCD cutter head is welded in the skewed slot by high-frequency heating, the sintered diamond cutter head by high-frequency heating be welded on rise as high as the banks in, wherein the composite bed of PCD cutter head is towards the skewed slot outside, and the bottom surface of PCD cutter head withstands on the base angle of V-type skewed slot.

Further improvement in the technical proposal is: the bottom surface of the relative matrix of PCD cutter head exceeds more, and the bottom surface of the relative matrix of sintered diamond cutter head grinding face is lower than the grinding face of PCD cutter head, and the grinding face of PCD cutter head exceeds the grinding face 0.2-0.3mm of sintered diamond cutter head.

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

Weld two kinds of unlike material cutter heads simultaneously, abrading block in working order down, the PCD cutter head preceding, sintered diamond cutter head after, the PCD cutter head is roughly ground in front, the sintered diamond cutter head after finish grind, utilize same abrading block to carry out time processing and can finish corase grind and correct grinding two procedures, thereby improved production efficiency greatly.Because PCD composite bed hardness can reach 8000HV, thermal conductivity factor is 700W/mK, has good wear resistance and heat conductivity, therefore uses the PCD cutter head as corase grind cutter head, the service life of improving whole abrading block greatly; The coefficient of friction of PCD composite bed is 0.1～0.3 simultaneously, and thermal coefficient of expansion is 0.9X10 ^-6～1.18X10 ^-6, with metal or nonmetal very little affinity arranged, can reduce greatly in the course of work grinding resistance, reduced the thermal deformation under the abrading block duty, improve the sharpness of abrading block.

The suffered in the course of the work power of PCD cutter head of the present utility model is very big, it is held out against be arranged in the skewed slot, an inclined-plane of skewed slot has just become the force surface to the PCD cutter head, most of cutting resistance in the grinding process is delivered on the force surface along the skewed slot direction by the PCD cutter head, overcome the shortcoming that common abrading block only bears cutting force by the welding plane of cutter head and matrix, improved the bonding strength of cutter head and matrix greatly, solved and fallen the cutter head problem usually.And the sintered diamond cutter head adopt rise as high as the banks or the plane welding fixing, but simplified manufacturing technique then.

Description of drawings

Fig. 1 is the cross-sectional view of matrix of the present utility model;

Fig. 2 is a cross-sectional view of the present utility model;

Fig. 3 is the structural representation of looking up of the present utility model.

Wherein: 1, matrix, 1A, skewed slot, are risen as high as the banks 1C, conical surface body, 1F, force surface, 2A, PCD cutter head, 2B, sintered diamond cutter head at 1B.

The specific embodiment

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

Shown in Fig. 2,3, this abrading block is made up of matrix 1, PCD cutter head 2A, sintered diamond cutter head 2B.Wherein as shown in Figure 1 at matrix 1, matrix 1 forms by machining, has the conical surface body 1C that is connected with equipment for grinding on matrix 1, is provided with skewed slot 1A and the 1B that rises as high as the banks on the bottom surface of matrix 1, skewed slot 1A is positioned at the left side of the 1B that rises as high as the banks, and the direction of advancing during the abrading block grinding is exactly to advance to the left.There is certain angle the bottom surface of skewed slot 1A and matrix 1, and skewed slot 1A is the hem width V-type at narrow right angle on one side, and the face of the back of the V-type skewed slot at right angle is force surface 1F.The PCD cutter head is welded in the skewed slot 1A by high-frequency heating, and sintered diamond cutter head 2B rises as high as the banks by the high-frequency welding manner welding in the 1B.PCD cutter head 2A is the square shape, on its one side composite bed is arranged; The composite bed of PCD cutter head 2A is towards the skewed slot outside, and another right angle face of PCD cutter head 2A withstands on the force surface 1F of skewed slot 1A.The grinding face of PCD cutter head 2A exceeds the about 0.2-0.3mm of grinding face of sintered diamond cutter head 2B.

Claims

1, a kind of rapid stock-removal abrading block, comprise matrix (1) that top is connected with equipment for grinding, be fixed on the sintered diamond cutter head (2B) on the matrix bottom surface, it is characterized in that: on the bottom surface of matrix (1), also be fixed with PCD head (2A) in the place ahead of sintered diamond cutter head.

2, a kind of rapid stock-removal abrading block according to claim 1 is characterized in that on the bottom surface of described matrix (1) that fixedly the position of PCD cutter head (2A) is provided with skewed slot (1A), and PCD cutter head (2A) is welded in this skewed slot (1A); Be provided with rise as high as the banks (1B) in the fixing position of sintered diamond cutter head (2B), sintered diamond cutter head (2B) is welded in this rise as high as the banks (1B).

3, a kind of rapid stock-removal abrading block according to claim 2, it is characterized in that described skewed slot (1A) is narrow on one side reverse V-shaped of a hem width, the composite bed of PCD head (2A) is towards the outside of skewed slot (1A), and the bottom surface of PCD cutter head (2A) withstands on the base angle of V-type skewed slot (1A).

4, according to claim 1 or 2 described a kind of rapid stock-removal abrading blocks, it is characterized in that described PCD cutter head (2A) is higher than sintered diamond cutter head (2B).