CN108032046A - A kind of PCD tool sharpenings technique - Google Patents
A kind of PCD tool sharpenings technique Download PDFInfo
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- CN108032046A CN108032046A CN201711310678.XA CN201711310678A CN108032046A CN 108032046 A CN108032046 A CN 108032046A CN 201711310678 A CN201711310678 A CN 201711310678A CN 108032046 A CN108032046 A CN 108032046A
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- pcd
- cutters
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- polycrystalline diamond
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
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Abstract
The invention discloses a kind of PCD tool sharpenings technique, belongs to superhard material manufacture field, and the PCD cutters include tool matrix and the PCD blades being welded on tool matrix, and the PCD blades include blade base and polycrystalline diamond layer, include the following steps：(1) .PCD composite sheets manufacture；(2) .PCD composite sheets are cut；(3) .PCD blades weld；(4) .PCD cutters precise laser is processed；(5) spraying protective layers；(6) polycrystalline diamond layers take off cobalt processing, solve the polycrystalline diamond layer at PCD cutting edge roundnesses there are metallic cobalt and to cause cutting edge tipping or rupture, so as to cause cutter life short and the problem of the existing processing technology time is long.
Description
Technical field
The invention belongs to superhard material manufacture field, more particularly to a kind of PCD tool sharpenings technique.
Background technology
Diamond has centuries history, twentieth century 70 years as a kind of ultrahard cutting tool material applied to machining
Generation, people have synthesized polycrystalline diamond (PCD) using high-pressure synthesis technology, solve natural diamond rare numbers, price is held high
Your the problem of, make the application range of diamond cutter expand to the multiple fields such as Aeronautics and Astronautics, automobile, electronics, stone material.
Diamond cutter has the characteristics such as hardness is high, compression strength is high, thermal conductivity and wearability are good, can be in high-speed cutting
Very high machining accuracy and processing efficiency are obtained, PCD cutters have hardness height, heat transfer is rapid, can reduce cutting force, thermal change
Shape is small, and high precision machining, be not easy to bond the characteristics such as chip so that PCD cutters are processing various non-ferrous metals and nonmetallic materials
When can obtain high production efficiency；Meanwhile because of welding performance good between its cement carbide substrate and common metal so that
The bending strength of cutter is significantly lifted.
The processed edge of PCD cutters essentially consists in：The material cutting of higher, improves the production cycle；Per tour can process more
More parts.Compared with traditional cutting tool, cutting speed, feed speed are dramatically speeded up.Meanwhile workpiece surface quality is significantly
Improve, the features such as size Control is remarkable, surface accuracy is consistent, rejection rate is low and cutter life is long.
The material of PCD cutters, shape, geometric angle, manufacturing process decide the cutting ability of cutter, wherein, manufacture work
The quality of skill directly affects cutting-tool's used life.At this stage, both at home and abroad for PCD manufacturing process mainly have grinding,
Spark eroding processing, Laser Processing, chemical process etc..The machining period length of grinding, and since emery wheel cusp processes PCD
Limitation, concave shaped complex outline can not be processed；Spark eroding processing is a kind of processing of high temperature discharge due to electric spark
Mode so that therefore PCD top layers, are only applicable to the roughing of concave shaped complex outline there are obvious graphitization phenomenon；Laser adds
Work category noncontact processing, since laser still falls within hot-working, finished surface still suffers from micro- graphitic layers.
The cobalt content of PCD cutters directly affects cutting-tool's used life, it can be played between being uniformly distributed in diamond
The effect of intensity is improved, so the service life of PCD cutters is also related with the content of metallic cobalt, cobalt content is higher, it is influenced by heat more
Seriously；Cobalt content is lower, its toughness is poorer.
Therefore, the polycrystalline diamond Rotating fields at PCD cutting edge roundnesses need to improve, and are being used to eliminate PCD cutters
Due to infringement caused by the presence of metallic cobalt, it is necessary to which a kind of new processing technology carries out concave shaped complex outline PCD knives in journey
The processing of tool, reduces process time, and cutting edge collapses scarce, increase cutting-tool's used life after reduction processing.
The content of the invention
It is an object of the invention to：A kind of PCD tool sharpenings technique, solves the polycrystalline diamond at PCD cutting edge roundnesses
There are metallic cobalt to cause cutting edge tipping or rupture for layer, so as to cause cutter life short and what the existing processing technology time was grown asks
Topic.
The technical solution adopted by the present invention is as follows：
A kind of PCD tool sharpenings technique, the PCD cutters include tool matrix and the PCD knives being welded on tool matrix
Piece, the PCD blades include blade base and polycrystalline diamond layer, include the following steps：
(1) .PCD composite sheets manufacture：By natural or artificial synthesized diamond dust and bonding agent by a certain percentage in height
The disk of fixed diameter and thickness is made in sintering under temperature, high pressure, then the hard alloy surface of the PCD composite sheets to sintering into sprays
Sand processing, and chamfering, filing are carried out successively；
(2) .PCD composite sheets are cut：The PCD composite sheet materials of 16P and 12P are cut into respectively using the method for wire cutting
Some pieces of PCD blades with inner concave type curve profile, the thickness of gross thickness 1.5mm, wherein polycrystalline diamond layer are
0.6mm；
(3) .PCD blades weld：PCD blades are welded on tool matrix using vacuum welding connection, obtain PCD cutters,
PCD cutters are put into vacuum drying oven and carry out Slow cooling, speed is 10 DEG C/min, and takes out cutter below 200 DEG C of temperature；
(4) .PCD cutters precise laser is processed：According to the design requirement of inner concave shape complex outline cutting edge roundness, laser is utilized
Cutter device carries out lasser cutting to PCD cutters；
(5) spraying protective layers：Using the method for dispersion coating, the appearance in the part in addition to polycrystalline diamond layer
Face spray 0.05~0.1mm thickness Teflon, then PCD cutters are placed in baker and are heated, temperature control 100 DEG C with
Under, until most solvent volatilizees, finally pass through 200 DEG C, the hot setting of 30 minutes again；
(6) polycrystalline diamond layers take off cobalt processing：PCD cutters obtained by step (5) are put into cobalt liquor, at 90 DEG C
At a temperature of, when uniform stirring goes cobalt liquor 3 small, PCD cutters cleaning treatment is then taken out to neutrality, finally removes PCD cutters
Outer surface on the Teflon that sprays.
Further, the tool matrix and blade base are WC/Co hard alloy.
PCD cutters are first passed through 10~15 points of cleaning solution ultrasonic cleaning by the step (5) successively before Teflon is sprayed
Clock, deionized water rinse 3~5 times, be put into vacuum drying chamber 120 DEG C of drying 1 it is small when.
The cobalt liquor that goes of the step (6) is severe corrosive chemical solution, is specially concentrated sulfuric acid 15at%, nitric acid
25at%, phosphatase 11 5at% and hydrogen peroxide 10at%, the solution of solvent is done with pure water.
In the step (6), when removing cobalt element, it is 1~3mm that the rake face of PCD cutters, which removes width, and rear knife face is gone
Except width is 0.05~0.1mm.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. a kind of PCD tool sharpenings technique, using precise laser processing method, shortens process time, improve PCD into
The surface quality of knife face after shape cutter, effectively controls the tipping quantity and size of cutting edge, improves the property of PCD forming tools
Valency ratio；
2. the present invention is removed the metallic cobalt in polycrystalline diamond layer at PCD cutting edge roundnesses using the method for chemical attack,
Before chemical attack removes cobalt, the hard alloy substrate on PCD cutters is sprayed into 0.05~0.1mm thickness by outer surface
The mode of Teflon protects, in case hard alloy is corroded and influences the performance of PCD cutters；
3. the cobalt liquor that goes of the present invention is severe corrosive chemical solution, formula adjusts again, can be by adjusting variousization
The ratio for learning reagent controls the time and reaction temperature that the metallic cobalt at PCD cutting edge roundnesses in polycrystalline diamond layer removes, with
Adapt to the PCD cutters of different processing requests；
4. the present invention reduces the generation of PCD cutter rake face oxidation effects, the tipping size Control of cutting edge 2 microns with
It is interior, meanwhile, Co, W element are uniformly distributed at cutting edge, Co, W element of rear knife face with thickness increase also more uniformly, using Ag,
Cu, Cd solder reduce welding temperature, reduce the graphited tendency of PCD cutters, add cutting-tool's used life；
5., can be by polycrystalline diamond layer at PCD cutting edge roundnesses using PCD cutters made of the method for the invention
Metallic cobalt removes, so as to avoid the presence of metallic cobalt from causing tipping or rupture to PCD cutting edge roundnesses, and improves work piece surface
Brightness, can meet the requirement of high surfaces finish of the PCD cutters in the processing of aluminium, silico-aluminum and aluminium alloy.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Elaborate below to the present invention.
A kind of PCD tool sharpenings technique, the PCD cutters include tool matrix and the PCD knives being welded on tool matrix
Piece, the PCD blades include blade base and polycrystalline diamond layer, include the following steps：
(1) .PCD composite sheets manufacture：By natural or artificial synthesized diamond dust and bonding agent by a certain percentage in height
The disk of fixed diameter and thickness is made in sintering under temperature, high pressure, then the hard alloy surface of the PCD composite sheets to sintering into sprays
Sand processing, and chamfering, filing are carried out successively；
(2) .PCD composite sheets are cut：The PCD composite sheet materials of 16P and 12P are cut into respectively using the method for wire cutting
Some pieces of PCD blades with inner concave type curve profile, the thickness of gross thickness 1.5mm, wherein polycrystalline diamond layer are
0.6mm；
(3) .PCD blades weld：PCD blades are welded on tool matrix using vacuum welding connection, obtain PCD cutters,
PCD cutters are put into vacuum drying oven and carry out Slow cooling, speed is 10 DEG C/min, and takes out cutter below 200 DEG C of temperature；
(4) .PCD cutters precise laser is processed：According to the design requirement of inner concave shape complex outline cutting edge roundness, laser is utilized
Cutter device carries out lasser cutting to PCD cutters, improves the surface quality of knife face after PCD forming tools, effectively control
The tipping quantity and size of cutting edge, improves the cost performance of PCD forming tools；
(5) spraying protective layers：Using the method for dispersion coating, the appearance in the part in addition to polycrystalline diamond layer
Face sprays the Teflon of 0.05~0.1mm thickness, forms protective layer, in case hard alloy is corroded and influences PCD cutters
PCD cutters, are then placed in baker and heat by performance, and temperature control is below 100 DEG C, until most solvent is waved
Hair, finally passes through 200 DEG C, the hot setting of 30 minutes again；
(6) polycrystalline diamond layers take off cobalt processing：PCD cutters obtained by step (5) are put into cobalt liquor, at 90 DEG C
At a temperature of, when uniform stirring goes cobalt liquor 3 small, PCD cutters cleaning treatment is then taken out to neutrality, finally removes PCD cutters
Outer surface on the Teflon that sprays.
Further, the tool matrix and blade base are WC/Co hard alloy.
PCD cutters are first passed through 10~15 points of cleaning solution ultrasonic cleaning by the step (5) successively before Teflon is sprayed
Clock, deionized water rinse 3~5 times, be put into vacuum drying chamber 120 DEG C of drying 1 it is small when.
The cobalt liquor that goes of the step (6) is severe corrosive chemical solution, is specially concentrated sulfuric acid 15at%, nitric acid
25at%, phosphatase 11 5at% and hydrogen peroxide 10at%, the solution of solvent is done with pure water, and formula adjusts again, can pass through tune
The ratio of whole various chemical reagent controls the time and reaction that the metallic cobalt at PCD cutting edge roundnesses in polycrystalline diamond layer removes
Temperature, to adapt to the PCD cutters of different processing requests.
In the step (6), when removing cobalt element, it is 1~3mm that the rake face of PCD cutters, which removes width, and rear knife face is gone
Except width is 0.05~0.1mm.
The above, is only the preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those skilled in the art disclosed herein technical scope in, can without the change that creative work is expected or
Replace, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be limited with claims
Subject to fixed protection domain.
Claims (5)
1. a kind of PCD tool sharpenings technique, the PCD cutters include tool matrix and the PCD blades being welded on tool matrix,
The PCD blades include blade base and polycrystalline diamond layer, it is characterised in that include the following steps：
(1) .PCD composite sheets manufacture：By natural or artificial synthesized diamond dust and bonding agent by a certain percentage in high temperature, height
The disk of fixed diameter and thickness is made in pressure sintering, then the hard alloy surface of the PCD composite sheets to sintering into is carried out at sandblasting
Reason, and chamfering, filing are carried out successively；
(2) .PCD composite sheets are cut：The PCD composite sheet materials of 16P and 12P are cut into respectively using the method for wire cutting some
Block has the PCD blades of inner concave type curve profile, and the thickness of gross thickness 1.5mm, wherein polycrystalline diamond layer are 0.6mm；
(3) .PCD blades weld：PCD blades are welded on tool matrix using vacuum welding connection, PCD cutters are obtained, by PCD
Cutter is put into vacuum drying oven and carries out Slow cooling, and speed is 10 DEG C/min, and takes out cutter below 200 DEG C of temperature；
(4) .PCD cutters precise laser is processed：According to the design requirement of inner concave shape complex outline cutting edge roundness, laser cutting is utilized
Device carries out lasser cutting to PCD cutters；
(5) spraying protective layers：Using the method for dispersion coating, sprayed in the outer surface of the part in addition to polycrystalline diamond layer
The Teflon of 0.05~0.1mm thickness is applied, then PCD cutters are placed in baker and are heated, temperature control is below 100 DEG C, directly
Volatilize to most solvent, finally pass through 200 DEG C, the hot setting of 30 minutes again；
(6) polycrystalline diamond layers take off cobalt processing：PCD cutters obtained by step (5) are put into cobalt liquor, in 90 DEG C of temperature
Under degree, when uniform stirring goes cobalt liquor 3 small, PCD cutters cleaning treatment is then taken out to neutrality, finally removes the outer of PCD cutters
The Teflon sprayed on surface.
A kind of 2. PCD tool sharpenings technique according to claim 1, it is characterised in that：Tool matrix and the blade base
Body is WC/Co hard alloy.
A kind of 3. PCD tool sharpenings technique according to claim 1, it is characterised in that：The step (5) is in spraying Teflon
PCD cutters, are first passed through cleaning solution ultrasonic cleaning 10~15 minutes by Long Qian successively, and deionized water rinses 3~5 times, is put into true
When 120 DEG C of drying 1 are small in empty drying box.
A kind of 4. PCD tool sharpenings technique according to claim 1, it is characterised in that：The step (6) removes cobalt liquor
It is specially concentrated sulfuric acid 15at%, nitric acid 25at%, phosphatase 11 5at% and hydrogen peroxide 10at% for severe corrosive chemical solution, with
Pure water does the solution of solvent.
A kind of 5. PCD tool sharpenings technique according to claim 1, it is characterised in that：In the step (6), cobalt is removed
During element, it is 1~3mm that the rake face of PCD cutters, which removes width, and the removal width of rear knife face is 0.05~0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310678.XA CN108032046A (en) | 2017-12-11 | 2017-12-11 | A kind of PCD tool sharpenings technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310678.XA CN108032046A (en) | 2017-12-11 | 2017-12-11 | A kind of PCD tool sharpenings technique |
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| CN108032046A true CN108032046A (en) | 2018-05-15 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048079A (en) * | 2018-09-10 | 2018-12-21 | 基准精密工业（惠州）有限公司 | The laser processing of cutter |
| CN109048080A (en) * | 2018-09-12 | 2018-12-21 | 基准精密工业（惠州）有限公司 | The laser processing of cutter |
| CN109719360A (en) * | 2019-02-26 | 2019-05-07 | 深圳市鑫金泉钻石刀具有限公司 | A kind of processing method of Whole PC D multiple-cutting-edge tool |
| CN111112966A (en) * | 2019-12-30 | 2020-05-08 | 无锡市星火金刚石工具有限公司 | Manufacturing method of PCD cutter |
| CN111250943A (en) * | 2020-03-18 | 2020-06-09 | 富耐克超硬材料股份有限公司 | Preparation method of woodworking superhard cutter |
| CN112981407A (en) * | 2021-02-03 | 2021-06-18 | 四川伽锐科技有限公司 | Ring-removed polycrystalline diamond compact and processing method thereof |
| CN113305362A (en) * | 2021-06-15 | 2021-08-27 | 青岛科技大学 | Method for repairing sintered diamond tool for precision machining through ultrasonic waves |
| CN114850517A (en) * | 2022-02-23 | 2022-08-05 | 深圳精匠云创科技有限公司 | Polycrystalline diamond cutter and machining method thereof |
-
2017
- 2017-12-11 CN CN201711310678.XA patent/CN108032046A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048079A (en) * | 2018-09-10 | 2018-12-21 | 基准精密工业（惠州）有限公司 | The laser processing of cutter |
| CN109048080A (en) * | 2018-09-12 | 2018-12-21 | 基准精密工业（惠州）有限公司 | The laser processing of cutter |
| CN109719360A (en) * | 2019-02-26 | 2019-05-07 | 深圳市鑫金泉钻石刀具有限公司 | A kind of processing method of Whole PC D multiple-cutting-edge tool |
| CN111112966A (en) * | 2019-12-30 | 2020-05-08 | 无锡市星火金刚石工具有限公司 | Manufacturing method of PCD cutter |
| CN111250943A (en) * | 2020-03-18 | 2020-06-09 | 富耐克超硬材料股份有限公司 | Preparation method of woodworking superhard cutter |
| CN112981407A (en) * | 2021-02-03 | 2021-06-18 | 四川伽锐科技有限公司 | Ring-removed polycrystalline diamond compact and processing method thereof |
| CN113305362A (en) * | 2021-06-15 | 2021-08-27 | 青岛科技大学 | Method for repairing sintered diamond tool for precision machining through ultrasonic waves |
| CN113305362B (en) * | 2021-06-15 | 2024-04-02 | 青岛科技大学 | Method for repairing sintered diamond tool for precision machining through ultrasonic waves |
| CN114850517A (en) * | 2022-02-23 | 2022-08-05 | 深圳精匠云创科技有限公司 | Polycrystalline diamond cutter and machining method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180515 |
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| WD01 | Invention patent application deemed withdrawn after publication |