CN102785054A

CN102785054A - Device and method for cold press molding of diamond positioning arranging cutter

Info

Publication number: CN102785054A
Application number: CN2012102954918A
Authority: CN
Inventors: 孙友宏; 高科; 马银龙; 李小洋; 张妍
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2012-08-18
Filing date: 2012-08-18
Publication date: 2012-11-21

Abstract

The invention discloses a device and method for cold pressing forming of diamond positioning and arranging cutting tools. The device is composed of a bottom mold, a cover mold, a press mold, a gasket and a grid. Cooperate with the cold-pressed cavity of the diamond matrix material, first fill a certain amount of matrix material powder in the cavity, and adjust the gasket to realize the lifting of the cover mold, lift the matrix material to the predetermined position, and then Place the grid on the cover mold, position and arrange the diamond particles on the surface of the carcass material through the cylindrical holes on the grid; finally remove the grid, and cold press the carcass material through the die; Layers of diamonds are arranged in a directional cutting tool green body, and the positioning and arrangement of diamonds in space can also be realized by replacing the grid; the invention has the characteristics of simple structure, convenient rapid cold forming, and high efficiency.

Description

The apparatus and method of cutting element cold moudling are arranged in the diamond location

Technical field

The present invention relates to a kind of diamond location and arrange the apparatus and method of cutting element cold moudling.

Background technology

Diamond is that a kind of hardness of generally acknowledging is the highest, the cutting material that abrasive resistance is best.The diamond particles of diamond cutting tool the inside at present commonly used is small and quantity is very big, can't its distribution of Artificial Control, and this just causes adamantine distribution randomness very big, and the performance of diamond cutting element also has very big-difference.The apparatus and method that diamond orientation reasonable in design is arranged can effectively solve the distribution problem of diamond in cutting element.A kind of " realizing the method for diamond orientation order distribution in cutter head " disclosed like Chinese invention patent CN101569903A; Wherein designed one and overlapped the device of the diamond orientation arrangement of forming by last dip mold and needle bar; And announced relevant preparation technology, realized aligning of mono-layer diamond, but 2 significantly deficiencies are arranged: (1) is in the diamond cutter tool of reality; Diamond distributes in solid space often, not merely in a plane, distributes; (2) in the diamond orientation placement process, need move up and down an adamantine height to needle bar, because diamond particles is very small, diamond particles size commonly used is all at 35-60 orders, so unrealistic to the control of needle bar.Offshore company such as U.S. 3M (US05092910), Korea S Shinhan (KOREA10-0645748-0000), Ewha companies such as (KOREA10-0502573-0000) have realized diamond aligning in cutter head; And can automated production; But these methods are a system engineering normally; Need to adopt special machinery equipment, therefore safeguard with manufacturing expense high.

Summary of the invention

The purpose of this invention is to provide a kind of diamond location and arrange the apparatus and method of cutting element cold moudling; This method is simple and reliable; And need not special installation, commonly used colding pressing in the industry, hot-press equipment gets final product; Manufacturing cost is lower, and can effectively realize the location arrangement of multi-layer diamond in cutting element.

The device of the present invention's diamond location arrangement cutting element cold moudling is made up of pressing mold, grid, cover mold, pad and bed die, and cover mold is arranged on the bed die, and pad is between bed die and cover mold; The pressure head on the bed die and the endoporus of cover mold cooperate; Grid is arranged on the cover mold, and the grid center has a plurality of cylindrical holes, and pressing mold is positioned on the cover mold; Pressing mold and the bottom has pressure head; Pressure head and pressure head are arranged in endoporus, and said pressing mold, cover mold and bed die material are carbide alloy, and the material of grid is cast aluminium 6005A.

The method that cutting element cold moudling is arranged in the present invention's diamond location comprises following four steps:

One, at first with bed die, pad and cover mold assembly jig, the endoporus cooperation through pressure head on the bed die and cover mold can form hemi-closure space, to place the carcass material of cutting element; The height of this hemi-closure space can be regulated through pad.Pad is that thickness is the semicircular ring that 10mm, 5mm, 2mm, 1mm do not wait, and can guarantee the up-down of cover mold through the number of adding or reduce pad..

Two, follow the load weighted carcass material of the interior adding of hemi-closure space that inside hole forms, and with the pressure head of pressing mold the carcass material inside the cover mold is carried out precompressed, pressure is 1-2MPa;

Three, withdraw from pressing mold, and cover mold is moved down, guarantee that the upper surface of carcass material upper surface and cover mold of precompressed is concordant through the number of regulating pad; Then grid is fastened on the upper surface of cover mold, the cooperation through two hangers on two grooves on the grid and the cover mold fixes relative position between the two; Then pour some diamond particles into to the upper surface of grid, slowly with the cylindrical hole of having accomplished fluently in the inswept grid of diamond particles, the height of this cylindrical hole is h with brush; < < 1.3d, d are the adamantine diameter of simple grain to h to d, and the aperture is D; < < 1.5d, d are the adamantine diameter of simple grain to D to d.This design can guarantee that each cylindrical hole can only pass through a diamond particles.

Four, etc. after diamond is arranged and accomplished, grid is taken off from cover mold gently, the diamond that arrange the location is then fallen the upper surface of carcass material; Then the pressure head with pressing mold is pressed into diamond particles in the carcass material, promptly can be made into the directed cutting element of mono-layer diamond and gives birth to embryo; Can also continue to add the carcass material, repeating step (), (two), (three) and (four) realize the living embryo of the cutting element of arranging the multi-layer diamond location.

Beneficial effect of the present invention:

Diamond location collating unit provided by the invention and method have adopted the cylindrical hole of accomplishing fluently on the grid to arrange diamond particles, and the combination of cover mold and pad can effectively realize the up-down of cover mold, the i.e. up-down of carcass material.These two structures have guaranteed that diamond particles can realize aligning accurately, and the cylindrical hole on the grid arranges and can both can be designed to concentric circles as required, and are radial, also can be designed to spiral.After mono-layer diamond cold moudling, continue to add the carcass material, repeat the pressing process of mono-layer diamond thin slice, just can realize multi-layer diamond aligning in the space, meet the instructions for use of diamond cutting element in the reality.This method preparation is simple, and mould and technology cost are lower, have good application and promotion prospect.

Description of drawings

Fig. 1 is a structure cross-sectional schematic of the present invention.

Fig. 2 be the present invention grid look up structural representation.

Fig. 3 is the structure cross-sectional schematic of the present invention's cover mold.

Fig. 4 is the structural representation of the present invention's pad.

The specific embodiment

See also Fig. 1 Fig. 2, Fig. 3 and shown in Figure 4, the device of the present invention's diamond location arrangement cutting element cold moudling is made up of pressing mold 1, grid 2, cover mold 3, pad 4 and bed die 5, and cover mold 3 is arranged on the bed die 5; Pad 4 is between bed die 5 and cover mold 3, and pressure head 51 on the bed die 5 and the endoporus of cover mold 3 31 cooperate, and grid 2 is arranged on the cover mold 3; Grid 2 centers have a plurality of cylindrical holes 23; Pressing mold 1 is positioned on the cover mold 3, pressing mold 1 and the bottom has pressure head 11, pressure head 51 is arranged in endoporus 31 with pressure head 11; The said pressing mold of institute 1, cover mold 3 and bed die 5 materials are carbide alloy, and the material of grid 2 is cast aluminium 6005A.

One, at first with bed die 5, pad 4 and cover mold 3 assembly jigs, endoporus 31 cooperations through pressure head on the bed die 5 51 and cover mold 3 can form hemi-closure space, to place the carcass material of cutting element; The height of this hemi-closure space can be regulated through pad 4.Pad 4 is the semicircular ring that 10mm, 5mm, 2mm, 1mm do not wait for thickness, and the concrete structure of pad 4 is as shown in Figure 4, can guarantee the up-down of cover mold 3 through the number of adding or reduce pad 4..

Two, then in the hemi-closure space that endoporus 31 forms, add load weighted carcass material, and carry out precompressed with the carcass material of 11 pairs of cover mold 3 the insides of pressure head of pressing mold 1, pressure is 1-2MPa;

Three, withdraw from pressing mold 1, and cover mold 3 is moved down, guarantee that the carcass material upper surface of precompressed is concordant with the upper surface of cover mold 3 through the number of regulating pad 4; Then grid 2 is fastened on the upper surface of cover mold 3, the cooperation through two hangers 32 on two grooves on the grid 2 22 and the cover mold 3 fixes relative position between the two; Then pour some diamond particles into to the upper surface 21 of grid 2; With brush slowly with 2 li cylindrical holes of having accomplished fluently 23 of the inswept grid of diamond particles; The height of this cylindrical hole 22 is h; < < 1.3d (d is the adamantine diameter of simple grain), the aperture is D to h to d, d < D < 1.5d (d is the adamantine diameter of simple grain).This design can guarantee that each cylindrical hole can only pass through a diamond particles.

Four, etc. after diamond is arranged and accomplished, grid 2 is taken off from cover mold 3 gently, the diamond that aligns is then fallen the upper surface of carcass material; Then the pressure head 11 with pressing mold 1 is pressed into diamond particles in the carcass material, promptly can be made into the directed cutting element of mono-layer diamond and gives birth to embryo; Can also continue to add the carcass material, repeating step (), (two), (three) and (four) realize the living embryo of the cutting element of arranging the multi-layer diamond location.

Claims

1. A device for cold-press forming of diamond positioning and arranging cutting tools, characterized in that it is composed of a die (1), a grid (2), a cover die (3), a gasket (4) and a bottom die (5) , the cover mold (3) is set on the bottom mold (5), the gasket (4) is located between the bottom mold (5) and the cover mold (3), the pressure head (51) on the bottom mold (5) and the cover mold The inner hole (31) of (3) cooperates, the grid (2) is set on the cover mold (3), the center of the grid (2) has a plurality of cylindrical holes (23), and the die (1) is located on the cover mold (3 ), the bottom of the stamper (1) has a pressure head (11), and the pressure head (51) and the pressure head (11) are located in the inner hole (31).

2. A device for cold forming of diamond positioning and arranging cutting tools according to claim 1, characterized in that: the material of the die (1), the cover die (3) and the bottom die (5) is cemented carbide, The grid (2) is made of cast aluminum 6005A.

3. A method for diamond positioning arrangement cutting tool cold press forming, the method comprises the following four steps:

(1), first assemble the mold with the bottom mold (5), gasket (4) and cover mold (3), pass the pressure head (51) on the bottom mold (5) and the inner hole (31) of the cover mold (3) ) to form a semi-enclosed space to place the carcass material of the cutting tool; the height of the semi-enclosed space can be adjusted by the gasket (4); the cover mold can be ensured by adding or reducing the number of gaskets (4). (3) Lifting;

(2) Then add the weighed carcass material into the semi-closed space formed by the inner hole (31), and use the indenter (11) of the die (1) to press the carcass material inside the cover mold (3). Preloading, the pressure is 1-2MPa;

(3) Exit the compression mold (1), and move the cover mold (3) downward by adjusting the number of gaskets (4), so as to ensure the upper surface of the pre-pressed carcass material and the upper surface of the cover mold (3) flush; then fasten the grid (2) on the upper surface of the cover mold (3), through the two grooves (22) on the grid (2) and the two lugs (32) on the cover mold (3) to fix the relative position between the two; then pour some diamond particles into the upper surface (21) of the grid (2), and slowly sweep the diamond particles through the grid (2) with a brush. The cylindrical hole (23), the height of the cylindrical hole (22) is h, d<h<1.3d, d is the diameter of a single diamond, the hole diameter is D, d<D<1.5d, d is the diameter of a single diamond diameter;

(4) After the diamond arrangement is completed, gently remove the grid (2) from the cover mold (3), and the diamonds positioned and arranged will fall to the upper surface of the carcass material; The indenter (11) presses the diamond particles into the carcass material to make a single-layer diamond-positioned cutting tool green body.

4. A method for cold-press forming of diamond positioning and arranging cutting tools according to claim 3, characterized in that: after step (4), continue to add carcass material, and repeat steps (1), (2) and (3) and (4), realize the green cutting tool embryo with multi-layer diamond positioning arrangement.

5 . A method for cold-press forming diamond alignment cutting tools according to claim 3 , characterized in that the shims ( 4 ) used in step (3) have thicknesses of 10mm, 5mm, 2mm and 1mm.