CN101337282A - Welding polycrystalline diamond boring cutter blade for processing valve guide basal-pore and guide-tube pore - Google Patents
Welding polycrystalline diamond boring cutter blade for processing valve guide basal-pore and guide-tube pore Download PDFInfo
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- CN101337282A CN101337282A CNA2008101410012A CN200810141001A CN101337282A CN 101337282 A CN101337282 A CN 101337282A CN A2008101410012 A CNA2008101410012 A CN A2008101410012A CN 200810141001 A CN200810141001 A CN 200810141001A CN 101337282 A CN101337282 A CN 101337282A
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- blade
- cutter
- valve guide
- polycrystalline diamond
- cutter hub
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Abstract
The invention relates to a welded polycrystalline diamond compact boring and reaming cutter blade for processing the bottom hole of a valve guide and a valve guide hole, which effectively solves the problems of simplex function, short service life and high processing cost of the prior cutters. The technical proposal for solving the problems is that the cutter blade comprises a blade and a cutter body, wherein the blade is a polycrystalline diamond compact blade, and the cutter body is a carbide cutter body; the blade and the cutter body are welded together; the cutter point A of the blade is in an arc shape with the radius R of 0.1-0.2mm; the cutter body is in a long flat shape; and one surface of the cutter body, on which the blade is mounted, takes a step-type, slope and groove shape. Because the PCD cutter blade is adopted, the invention has high rigidity, strong wearing resistance, fast heat exchange, small friction coefficient, improved surface quality of processed pieces, and enhanced strength and rigidity of the cutter point and the cutter blade; therefore, the service life of the cutter is prolonged; the cutter blade can be used for processing both the bottom hole of the valve guide and the valve guide hole; the good double functions of the cutter blade are unexpected in the original design; no public reports on the cutter have been released so far; the cutter blade is a major innovation in cutters, with huge economic and social benefits.
Description
One, technical field
The present invention relates to cutter, particularly a kind of welding polycrystalline diamond boring cutting blade of processing valve guide bushing bottom outlet and guide hole.
Two, background technology
The cylinder cap of Diesel engine generally uses HT250 (casting pig) to make, valve guide bushing bottom outlet on the cylinder cap adopted carbide alloy coating cutter processing originally, point of a knife (blade) is 45 ° * 0.1 chamfering, but processes the casting pig quick abrasion with this cutter, and the life-span is short, also some producer processes with polycrystalline cubic boron nitride (PCBN) cutter, because the conduit bottom diameter is little, linear velocity does not increase, and can not bring into play the good characteristics of PCBN cutter red hardness, therefore, processing effect is also undesirable; Generally adopt the powdered metallurgical material manufacturing for the valve guide bushing in the engine industry, the hard alloy cutter of band dope layer is adopted in the processing of guide hole, because the problem on its cutter structure, tool wear is fast, service life is short, and is not easy for processing valve guide bushing bottom outlet, function singleness, do not satisfy the needs of modern production development, the innovation of cutter is imperative.
Three, summary of the invention
At above-mentioned situation, for overcoming the prior art deficiency, the object of the invention just provides a kind of welding polycrystalline diamond boring cutting blade of processing valve guide bushing bottom outlet and guide hole, it is single effectively to solve tool function, service life is short, the problem that processing cost is high, the technical scheme of its solution is, comprise blade and cutter hub, blade is polycrystalline diamond (PCD) composite sheet, cutter hub is the carbide alloy cutter hub, blade and cutter hub weld together, the point of a knife of blade (cutting edge) A is the circular-arc of radius R 0.1-0.2mm, cutter hub is long flat, and the cutter hub face that blade one side is housed is step inclined plane groove shape, and the present invention is owing to adopt the PCD composite blade, the hardness height, wearability is strong, and the heat conduction is fast, and coefficient of friction is little, improved the work piece surface quality, increase the intensity and the rigidity of point of a knife cutting edge, thereby prolonged the service life of cutter, both can be used to process the valve guide bushing bottom outlet, can be used for processing guide hole again, one cutter is dual-purpose, and getting well in the former design of effect was not contemplated to, and the open report of seeing this cutter is not arranged so far yet, be that one on the cutter innovated greatly, economic and social benefit is huge.
Four, description of drawings
Fig. 1 is a structural front view of the present invention.
Fig. 2 is a vertical view of the present invention.
Fig. 3 be among Fig. 1 B-B to sectional view.
Five, the specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
Shown in Fig. 1-3, the present invention includes blade and cutter hub, blade 1 is polycrystalline diamond (PCD) composite sheet, cutter hub 2 is the carbide alloy cutter hub, blade and cutter hub weld together, the point of a knife of blade (cutting edge) A is the circular-arc of radius R 0.1-0.2mm, and cutter hub is long flat, and the cutter hub face that blade one side is housed is step inclined plane groove shape 3.
In order to guarantee result of use, save material, said blade 1 is flat berrette file shape, the curved surface shape that the blade front portion is linked to each other and constitutes with the arc body by stretched.Said composite polycrystal-diamond can adopt existing polycrystalline diamond compound tool bit (sheet) to process, be about to point of a knife A and be originally 45 ° * 0.1 chamfering, adopting the prior art reconditioning is that point of a knife (cutting edge) A radius R is circular-arc the getting final product of 0.1-0.2mm (being abbreviated as R0.1-0.2), cutter hub adopts prior art to mill out clamping location inclined plane groove shape 3 by the long flat cutter hub of present hard alloy.
It is to be noted that valve guide bushing is crucial spare and accessory parts in the engine valve actuating mechanism.Because valve, valve seat and conduit are worked under the environment of HTHP, so must have good wearability and self lubricity.And guide hole is coaxial with the seat valve conical surface, and guaranteeing the sealing of valve and valve seat, so the processing of guide hole and conduit bottom outlet is extremely important.Because the conduit bottom outlet is that deep hole machining and diameter are little, linear velocity low (100m/min) does not reach the requirement (the PCBN hear resistance reaches 1300 ℃-1500 ℃) of the red hard processing of PCBN cutter.And the hardness height of PCD cutter, shock resistance and anti-seismic performance height have high wearability, cutting speed are required not too strict.Therefore through the repeated multiple times experimental analysis, adopt the PCD cutter to process the conduit bottom outlet, cutter life promotes to some extent, has processed about 100, has obtained certain effect, because valve guide bushing bottom outlet and the structural characteristics of guide hole, integrated structure has improved cutting-tool angle during experiment, determine point of a knife A radius R 0.1-0.2, improve cutting speed, reduced the amount of feeding.Experiment has been processed 200, and cutter can also carry out roughing, has obtained the technique effect of not expected, has overthrown traditional PCD cutter and can not process the idea that iron is material, has solved the technical barrier of failing to solve processing valve guide bushing bottom outlet and guide hole for a long time.
Find out by above-mentioned situation, the present invention adopts the polycrystalline diamond blade to substitute former hard alloy coated blade (cutter), particularly to have adopted unprecedented point of a knife be the new construction of R0.1-0.2 to blade, changed former point of a knife and be 45 ° * 0.1 chamfering structure, original tool wear is fast, service life, short defective was overcome, improved cutter life, can repeat reconditioning, greatly reduce processing cost and production cost, both solve the processing of the valve guide bushing bottom outlet that engine cylinder covers, solved the processing problems in engine valve guide hole again simultaneously, the many usefulness of one cutter are made the best use of everything, the production efficiency height, the workpiece quality is good, compare with the like product cutter, improve service life more than 10 times, reduce use cost more than 5 times, prior art institute is inaccessible, succeeding in developing of this cutter is that one on the cutter created greatly, and economic and social benefit is huge.
Claims (3)
1, a kind of welding polycrystalline diamond boring cutting blade of processing valve guide bushing bottom outlet and guide hole, comprise blade and cutter hub, it is characterized in that, blade (1) is a composite polycrystal-diamond, cutter hub (2) is the carbide alloy cutter hub, and blade and cutter hub weld together, and the point of a knife of blade (A) is the circular-arc of radius R 0.1-0.2mm, cutter hub is long flat, and the cutter hub face that blade one side is housed is step inclined plane groove shape (3).
2, the welding polycrystalline diamond boring cutting blade of processing valve guide bushing bottom outlet according to claim 1 and guide hole is characterized in that, said blade (1) is flat berrette file shape, the curved surface shape that the blade front portion is linked to each other and constitutes with the arc body by stretched.
3, the welding polycrystalline diamond boring cutting blade of claim 1 or 2 described processing valve guide bushing bottom outlets and guide hole is the processing valve guide bushing bottom outlet that covers of engine cylinder and the application of guide hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101410012A CN101337282A (en) | 2008-08-12 | 2008-08-12 | Welding polycrystalline diamond boring cutter blade for processing valve guide basal-pore and guide-tube pore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101410012A CN101337282A (en) | 2008-08-12 | 2008-08-12 | Welding polycrystalline diamond boring cutter blade for processing valve guide basal-pore and guide-tube pore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101337282A true CN101337282A (en) | 2009-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101410012A Pending CN101337282A (en) | 2008-08-12 | 2008-08-12 | Welding polycrystalline diamond boring cutter blade for processing valve guide basal-pore and guide-tube pore |
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| CN (1) | CN101337282A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071878A (en) * | 2009-11-24 | 2011-05-25 | 中国石油天然气股份有限公司冀东油田分公司 | Polycrystalline diamond compact |
| CN102069203A (en) * | 2011-01-27 | 2011-05-25 | 郑州市钻石精密制造有限公司 | Boring cutter with through groove for machining conduit hole |
| CN102069204A (en) * | 2011-01-27 | 2011-05-25 | 郑州市钻石精密制造有限公司 | Boring cutter with chip breaker groove for machining conduit hole |
| CN102198521A (en) * | 2011-04-08 | 2011-09-28 | 郑州市钻石精密制造有限公司 | Boring blade for machining conduit hole |
| CN109513955A (en) * | 2019-01-03 | 2019-03-26 | 森泰英格（成都）数控刀具股份有限公司 | Composite blade and cutter are cut with scissors in boring |
-
2008
- 2008-08-12 CN CNA2008101410012A patent/CN101337282A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071878A (en) * | 2009-11-24 | 2011-05-25 | 中国石油天然气股份有限公司冀东油田分公司 | Polycrystalline diamond compact |
| CN102069203A (en) * | 2011-01-27 | 2011-05-25 | 郑州市钻石精密制造有限公司 | Boring cutter with through groove for machining conduit hole |
| CN102069204A (en) * | 2011-01-27 | 2011-05-25 | 郑州市钻石精密制造有限公司 | Boring cutter with chip breaker groove for machining conduit hole |
| CN102069204B (en) * | 2011-01-27 | 2013-04-10 | 郑州市钻石精密制造有限公司 | Boring cutter with chip breaker groove for machining conduit hole |
| CN102198521A (en) * | 2011-04-08 | 2011-09-28 | 郑州市钻石精密制造有限公司 | Boring blade for machining conduit hole |
| CN102198521B (en) * | 2011-04-08 | 2013-04-10 | 郑州市钻石精密制造有限公司 | Boring blade for machining conduit hole |
| CN109513955A (en) * | 2019-01-03 | 2019-03-26 | 森泰英格（成都）数控刀具股份有限公司 | Composite blade and cutter are cut with scissors in boring |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090107 |