CN201988744U - Tailor-welding type small polycrystalline cutter - Google Patents
Tailor-welding type small polycrystalline cutter Download PDFInfo
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- CN201988744U CN201988744U CN2011200635340U CN201120063534U CN201988744U CN 201988744 U CN201988744 U CN 201988744U CN 2011200635340 U CN2011200635340 U CN 2011200635340U CN 201120063534 U CN201120063534 U CN 201120063534U CN 201988744 U CN201988744 U CN 201988744U
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Abstract
The utility model relates to a tailor-welding type small polycrystalline cutter, belonging to the technical field of cutters. The tailor-welding type small polycrystalline cutter is characterized in that a polycrystalline cubic boron nitride compact serves as a cutter bit, a substrate of the compact is a hard alloy layer, and a cubic boron nitride material layer serves as an end face; a side face of the end part of a cutter bar and the substrate (hard alloy layer) of the compact abut against each other in a closely assembled manner and are fixedly connected together in a welded manner; and the cutter bar is made of an ordinary hard alloy. The tailor-welding type small polycrystalline cutter has the following beneficial effects that the side face of the end part of the cutter bar and the substrate of the cutter bit closely abut against each other, are assembled together in an embedded manner and are welded and fixed with each other; the welding area is large; the welding strength is high; the diameter of the cutter bit of the tailor-welding type small polycrystalline cutter is less than phi2; and the supporting thickness of the cutter bar is larger than 1mm; therefore, the strength of the cutter bit of the small cutter is increased; the problem of being difficult to machine small holes of a part such as a flexible connector, an end cap and the like is solved; and the machining requirements for a high-grade, precision and advanced product such as an aerospace product are met.
Description
Technical field
The utility model belongs to the cutting tool technical field, relates to the little cutter of welding formula glomerocryst, relates in particular to a kind of little cutter of polycrystalline cubic boron nitride welding formula below Φ 2mm of tool bit diameter.
Background technology
Machining is a topmost processing method in the machine-building, and accommodation is very wide, and can reach very high precision and very low surface roughness, so occupy critical role in manufacturing technology.
Along with science and technology development, the machining of the special alloy material of high tenacity, high strength, high rigidity proposed new problem for the machining manufacturing process, and the aperture fine finishining of special alloy material has proposed new requirements at the higher level to cutting tool.Adopt the iron-nickel-cobalt glass sealing alloy in a large number as space product, special difficult-to-machine material such as nonmagnetic steel, the pocket knife tool hardness of making of common material is not enough, and its heat endurance and anti-iron compatibility are poor, can't normally cut special difficult-to-machine material.The processing of space flight highly sophisticated products precise hole is more difficult, becomes the bottleneck of development.
And polycrystalline cubic boron nitride (PCBN) material heat endurance and anti-iron compatibility are good, and hardness is only second to diamond, are much higher than sintex and hard alloy cutter, thereby the very suitable cutter head of doing.But Polycrystalline Cubic Boron Nitride is crisp, and the knife bar frangibility is unfit to do complete cutter.Can adopt mechanical clamping type or stitch welding formula to make to the large scale cutter, promptly support with thicker knife bar, " stitch welding " polycrystalline cubic boron nitride composite sheet to guarantee cutter intensity, is born big cutting force.But, be applicable to the mechanical clamping type or the stitch welding formula manufacture craft of large scale cutter, to small size cutter and inapplicable.For example will process Φ 2mm hole, its cutter rake face will be at shaft core position, if use " stitch welding formula " technology, its knife bar support thickness must be less than 0.5mm, and cutter insufficient strength, frangibility can't be born big cutting force and be carried out normal machining at this moment.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, cutting precision is high and long service life, is that cutter head, carbide alloy are the little cutter of welding formula glomerocryst of knife bar with the polycrystalline cubic boron nitride.
For achieving the above object, the technical scheme that adopts is: the little cutter of welding formula glomerocryst, comprise knife bar and cutter head, and it is characterized in that: described cutter head is the polycrystalline cubic boron nitride composite sheet, the substrate of described composite sheet is a hard alloy layer, and end face is the cubic boron nitride material layer; The side of described knife bar end and the substrate hard alloy layer of described composite sheet fit tightly embedded splicing, and welding is fixing.
Described knife bar material is a carbide alloy.
The beneficial effects of the utility model: the side of described knife bar end and the substrate of described cutter head fit tightly embedded splicing, and the welding fixed-area is big, intensity is high; Tool bit diameter is at the welding formula little cutter of Φ below 2, and the knife bar support thickness is greater than 1mm, thereby improved the intensity of pocket knife tool cutter head, solves part apertures processing difficult problems such as flexible coupling, end cap, satisfied the processing needs of high, refined, peak products such as space flight.
Description of drawings
Below in conjunction with description of drawings and the specific embodiment to the utility model is described further.
Fig. 1 is a cutter head cubic boron nitride compact structure schematic diagram;
Fig. 2 is the utility model structural representation;
Fig. 3 is that the A of Fig. 2 is to structural representation.
1-cubic boron nitride composite sheet cutter head among the figure; 2-cutter head end face cubic boron nitride material layer; 3-cutter head substrate hard alloy layer; The 4-knife bar.
The specific embodiment
Structural representation of the present utility model such as Fig. 1～shown in Figure 3, as seen from the figure, the little cutter of welding formula glomerocryst, comprise knife bar 4 and cutter head 1, it is characterized in that: described cutter head 1 is the polycrystalline cubic boron nitride composite sheet, and the substrate of cutter head 1 is a hard alloy layer 3, and end face is a cubic boron nitride material layer 2; The side of described knife bar 4 ends and the substrate hard alloy layer 3 of described cutter head 1 fit tightly embedded splicing, and welding is fixing.
Described knife bar 4 adopts the ordinary rigid alloy.
Polycrystalline cubic boron nitride (PCBN) is to be substrate with the carbide alloy, last lay one deck cubic boron nitride (CBN) single-crystal fine powder, (7～9GPa) compactings form for adding additives high temperature (1400～2600 ℃), high pressure, hardness height, excellent cutting performance, high-wearing feature and long-life have been improved the workpiece machining accuracy greatly, reduce the number of times of tool changing and sharpening, improved work efficiency; Main is the little cutter of welding formula, utilizes cutter head substrate hard alloy layer and knife bar carbide alloy material to weld, and bonding area is big, intensity is high, and little cutter can bear big cutting force, has satisfied the processing needs of high-grade, precision and advanced product parts apertures such as space flight.
Claims (2)
1. the little cutter of welding formula glomerocryst comprises knife bar and cutter head, and it is characterized in that: described cutter head is the polycrystalline cubic boron nitride composite sheet, and the substrate of described composite sheet is a hard alloy layer, and end face is the cubic boron nitride material layer; The side of described knife bar end and the substrate hard alloy layer of described cutter head composite sheet fit tightly embedded splicing, and welding is fixing.
2. by the little cutter of the described welding formula of claim 1 glomerocryst, it is characterized in that: described knife bar material is a carbide alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200635340U CN201988744U (en) | 2011-03-11 | 2011-03-11 | Tailor-welding type small polycrystalline cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200635340U CN201988744U (en) | 2011-03-11 | 2011-03-11 | Tailor-welding type small polycrystalline cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201988744U true CN201988744U (en) | 2011-09-28 |
Family
ID=44665247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200635340U Expired - Fee Related CN201988744U (en) | 2011-03-11 | 2011-03-11 | Tailor-welding type small polycrystalline cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201988744U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI624319B (en) * | 2015-04-01 | 2018-05-21 | Composite tungsten carbide tool manufacturing method |
-
2011
- 2011-03-11 CN CN2011200635340U patent/CN201988744U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI624319B (en) * | 2015-04-01 | 2018-05-21 | Composite tungsten carbide tool manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140311 |