CN108177030A - A kind of mirror grinding method of brait grinding wheel - Google Patents
A kind of mirror grinding method of brait grinding wheel Download PDFInfo
- Publication number
- CN108177030A CN108177030A CN201810088140.7A CN201810088140A CN108177030A CN 108177030 A CN108177030 A CN 108177030A CN 201810088140 A CN201810088140 A CN 201810088140A CN 108177030 A CN108177030 A CN 108177030A
- Authority
- CN
- China
- Prior art keywords
- grinding
- brait
- grinding wheel
- dressing
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/001—Devices or means for dressing or conditioning abrasive surfaces involving the use of electric current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
- B24D3/10—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for porous or cellular structure, e.g. for use with diamonds as abrasives
Abstract
The invention discloses a kind of mirror grinding method of brait grinding wheel, including step：Step 1：Discharge finishing is carried out by electrodes finish device to brait grinding wheel to repair together；Step 2：Dry Grinding processing is carried out using axial, small cutting-in creep feed mode to hard brittle material surface using the brait grinding wheel after repairing together；Feeding depth is 1~20 micron, and boart boart wheel speed is 1000~6000 revs/min, and feed speed is 5~200 millis m/min；Step 3：Step 2 is repeated, until reaching mirror grinding effect.The present invention can obtain the more matched Grain protruding height of higher, generate bigger chip space, and advantageous discharge grinding heat improves grinding surface quality；Wearability is good, effectively improves grinding efficiency；Improve the dressing dressing efficiency of coarse granule grinding wheel；Dry Grinding processing is carried out using axial, small cutting-in creep feed, with brait grinding wheel, electric discharge dressing cooperation, processing effect is good, can obtain preferable mirror grinding effect.
Description
Technical field
The present invention relates to the high quality of the fine of sintered carbide tools, Precision Manufacturing Technology field more particularly to hard brittle material
Grinding process method, specially a kind of mirror grinding method of brait grinding wheel.
Background technology
Hard brittle material hardness is high, fusing point is high, brittleness is big, physical-mechanical properties（Particularly toughness and intensity）With metal
Material is compared and is made a big difference.In order to obtain the hard brittle material product of high quality, current many industrially developed country all exist
It is dedicated to the working research of hard brittle material.
The high performance hard brittle material such as optical device, glass, engineering ceramics has a wide range of applications, and hardness is higher, fracture
Toughness is low, it is difficult to process and be not easy to obtain the surface of high quality.Abrasive lapping method, diamond pen dressing method and grinding mild steel method etc.
Not only dressing efficiency is low for traditional dressing method, and also there is plastic precisions to be difficult to control, it is complicated for operation the problems such as.Go out in recent years
Many new dressing techniques are showed, such as the methods of laser reconditioning, electrochemical corrosion finishing, on-line purification, although improving
Dressing accuracy, but these processing method efficiency are low, and production cost is high, and needs intractable corrosive liquid.
For hard brittle material, ultraprecise wheel grinding technology is a kind of most effective processing method, can be obtained
Higher machining accuracy and efficiency.However, the abrasion of relatively fine particle skive is very fast and the finishing of frequent dressing always
It is the technical bottleneck of industrialization, urgent problem to be solved is how to delay the abrasion of superfine grinding tool at present.Using metal
Base diamond grinding wheel tool can carry out hard brittle material mechanical-moulded processing, high in machining efficiency, at low cost.But more slightly
The skive of particle can not obtain the finished surface of high quality, and the surface roughness of workpieces processing is high.
Invention content
It is modified it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of spark discharge dressing, is axial, small
The mirror grinding method of the brait grinding wheel of cutting-in creep feed mode grinding obtains mirror grinding effect.
The purpose of the present invention is achieved through the following technical solutions：
A kind of mirror grinding method of brait grinding wheel, it includes the following steps：
Step 1：Electric discharge dressing is carried out to brait grinding wheel by mixed electrode trimmer to modify so that brait grinding wheel
Surface goes out to sharpen grain dressing and repaiies together；
Step 2：Using the brait grinding wheel after repairing together to hard brittle material surface using axial, small cutting-in creep feed side
Formula carries out Dry Grinding processing；Feeding depth is 1~20 micron, and boart boart wheel speed is 1000~6000 revs/min, feeding speed
It spends for 5~200 millis m/min；
Step 3：Step 2 is repeated, until reaching mirror grinding effect.
As preferred mode, the skive is Metal Substrate brait grinding wheel.
As preferred mode, the Metal Substrate brait grinding wheel is mainly by bronze binding agent and diamond abrasive group
Into the diamond abrasive granularity is 20~120 mesh.
As preferred mode, the electrode of the mixed electrode trimmer is described using plane electrode or cap-shaped electrode
The mass percent of mixed electrode of the electrode material for cast iron and copper powder, cast iron and copper powder is 1:9~9:1.
As preferred mode, the small cutting-in creep feed mode is：Feeding depth is 1~10 micron, the Buddha's warrior attendant
Stone sand wheel speed is 2000~5000 revs/min, and feed speed is 10~100 millis m/min.
As preferred mode, described the step of electric discharge dressing finishing is carried out to brait grinding wheel is specifically using electrical fire
Flower electric discharge dressing repaiies the metallic bond for removing the boart boart wheel surface using pulse spark discharge together, utilizes simultaneously
At the top of the cast iron removal diamond abrasive grain of mixed electrode so that wheel face goes out to sharpen grain dressing and repaiies together.
As preferred mode, the open-circuit voltage of the pulse spark discharge is 10~200 volts, and electric current is 1~10 peace,
Pulse width is 1~200 microsecond, and the pulse spacing is 1~200 microsecond.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）Compared with the skive of relatively fine particle, more coarse grained skive can obtain higher grit protrusion
Highly, chip space, the Grain protruding height of generation bigger are more consistent, are conducive to discharge grinding heat in time, improve and are ground table
Face quality, reaches mirror effect；
（2）Compared with traditional fine grained wheel grinding, the abrasion of coarse granule grinding wheel is slower, and wheel grinding face hold is preferable,
Wearability is good, so as to effectively improve grinding efficiency；
（3）Compared with traditional mechanical dressing, the dressing dressing efficiency of coarse granule grinding wheel can be greatly improved in electric discharge dressing finishing, together
When can obtain the neater Grain protruding height of bigger, the breakage of smaller grinding skin and crackle；
（4）Dry Grinding processing is carried out using axial, small cutting-in creep feed mode, is coordinated with brait grinding wheel, electric discharge dressing,
Processing effect is good, can obtain good mirror grinding effect.
Description of the drawings
Fig. 1 goes out to sharpen grain close-up schematic view for brait wheel face after existing electric discharge dressing finishing.
Fig. 2 is that the brait wheel face after the electric discharge dressing of the embodiment of the present invention is repaiied together goes out to sharpen grain partial enlargement and shows
It is intended to.
Specific embodiment
Technical scheme of the present invention is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
A kind of mirror grinding method of brait grinding wheel, includes the following steps：
Step 1：Dressing finishing is carried out to skive by mixed electrode trimmer so that brait wheel face goes out
Sharpening grain dressing is repaiied together, and the electrode of the electrodes finish device uses plane electrode or cap-shaped electrode；
Step 2：Skive after being modified using dressing is to hard brittle material surface using axial, small cutting-in creep feed mode
Carry out Dry Grinding processing；Feeding depth is 1~20 micron, and boart boart wheel speed is 1000~6000 revs/min, feed speed
For 5~200 millis m/min；
Step 3：Step 2 is repeated, until reaching mirror grinding effect.
In a preferred embodiment, the skive is Metal Substrate brait grinding wheel.
In a preferred embodiment, the Metal Substrate brait grinding wheel is by bronze binding agent and diamond abrasive group
Into diamond abrasive granularity is 20~120 mesh.
In a preferred embodiment, the electrode of the mixed electrode trimmer uses plane electrode or cap-shaped electrode,
The mass percent of mixed electrode of the electrode material for cast iron and copper powder, cast iron and copper powder is 1:9~9:1.
In a preferred embodiment, small cutting-in creep feed mode is：Feeding depth is 1~10 micron, skive
Rotating speed is 2000~5000 revs/min, and feed speed is 10~100 millis m/min.
In a preferred embodiment, described the step of electric discharge dressing finishing is carried out to brait grinding wheel is specifically to use
Spark discharge dressing is modified, and the metallic bond of the boart boart wheel surface is removed using pulse spark discharge, simultaneously
At the top of the cast iron removal diamond abrasive grain of mixed electrode so that wheel face goes out to sharpen grain dressing and repaiies together.Wherein, it is described
The open-circuit voltage of pulse spark discharge is 10~200 volts, and electric current is 1~10 peace, and pulse width is 1~200 microsecond, between pulse
It is divided into 1~200 microsecond.Fig. 1 is that the brait wheel face before electric discharge dressing finishing goes out to sharpen grain close-up schematic view, is schemed
2 be discharge dressing finishing after brait wheel face go out to sharpen grain close-up schematic view, can be seen with reference to Fig. 1 and Fig. 2
Go out, compared to existing electric discharge dressing dressing method, the more coarse grained skive of the present embodiment is after electric discharge dressing is repaiied together
Can obtain higher Grain protruding height, generate bigger chip space, Grain protruding height it is more consistent, be conducive to arrange in time
Go out to be ground heat, so as to improve grinding surface quality, reach mirror effect.
In a preferred embodiment, using #46 bronze binding agent skives, using electro-contact discharge dressing method pair
Brait grinding wheel carries out dressing, and the skive after dressing carries out hard alloy (YG8) axial Dry Grinding processing examination
It tests, the carbide surface roughness Ra of acquisition can reach 73nm~89nm.
Compared with traditional mechanical dressing, electric discharge dressing can obtain maximum, neat Grain protruding height (see Fig. 2),
Cause to generate smaller grinding heat and surface roughness.Brait grinding wheel has larger Grain protruding height and rigidity, therefore
Smooth macroscopical grinding skin can be obtained, can realize the precision mirror surface Dry Grinding processing of hard alloy.
In a preferred embodiment, experiment is repaiied using 46# bronze binding agent skives using above-mentioned contact discharge
Sharp method carries out dressing to brait grinding wheel, the skive after dressing to respectively to three kinds of mould steel (8418, NAK80
And S136H) carry out axial Dry Grinding processing experiment and do.Compared with mechanical dressing, the skive after the dressing that discharges can
Better surface quality is obtained, after grinding, the surface roughness Ra of three kinds of mould steel respectively reaches 0.022 μm, 0.030 μm
With 0.027 μm, macro surface is attained by the effect of minute surface.This is because after electric discharge dressing, coarse diamond abrasive grain energy
Enough reach higher Grain protruding height, generate the chip space of bigger, be also conducive to discharge in time and be ground heat.Therefore, it discharges
The 46# braits grinding wheel of dressing can realize the minute surface Dry Grinding processing of mould steel, and surface roughness Ra minimum is reachable
0.022 µm。
In above-described embodiment using spark discharge dressing dressing method can to coarse granule metal-base diamond grinding wheel into
Row high-efficiency and precision dressing is modified, and compared with traditional mechanical dressing, grinding wheel dressing dressing efficiency can be greatly improved, be effectively increased
Micro- Grain protruding height of wheel face increases Effective grains' number, increases the chip space in abrasive grain cutting region, reduces grinding wheel mill
Talus accumulation during grain cutting removal workpiece, obtains mirror grinding effect.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
- A kind of 1. mirror grinding method of brait grinding wheel, which is characterized in that it includes the following steps：Step 1：Electric discharge dressing is carried out to brait grinding wheel by mixed electrode trimmer to modify so that brait grinding wheel Surface goes out to sharpen grain dressing and repaiies together；Step 2：Using the brait grinding wheel after repairing together to hard brittle material surface using axial, small cutting-in creep feed side Formula carries out Dry Grinding processing；Feeding depth is 1~20 micron, and boart boart wheel speed is 1000~6000 revs/min, feeding speed It spends for 5~200 millis m/min；Step 3：Step 2 is repeated, until reaching mirror grinding effect.
- 2. a kind of mirror grinding method of brait grinding wheel according to claim 1, it is characterised in that：The Buddha's warrior attendant Stone sand wheel is Metal Substrate brait grinding wheel.
- 3. a kind of mirror grinding method of brait grinding wheel according to claim 2, it is characterised in that：The metal Base brait grinding wheel is mainly made of bronze binding agent and diamond abrasive, and the diamond abrasive granularity is 20~120 mesh.
- 4. a kind of mirror grinding method of brait grinding wheel according to claim 1, it is characterised in that：The mixing electricity The electrode of pole trimmer uses plane electrode or cap-shaped electrode, and the electrode material is cast iron and the mixed electrode of copper powder, is cast The mass percent of iron and copper powder is 1:9~9:1.
- 5. a kind of mirror grinding method of brait grinding wheel according to claim 1, it is characterised in that：It is described small to cut Deep creep feed mode is：Feeding depth is 1~10 micron, and the boart boart wheel speed is 2000~5000 revs/min, feeding speed It spends for 10~100 millis m/min.
- 6. a kind of mirror grinding method of brait grinding wheel according to any one of claim 1 to 3, feature exist In：Described the step of electric discharge dressing finishing is carried out to brait grinding wheel is specifically to be repaiied together using spark discharge dressing, is utilized Pulse spark discharge removes the metallic bond of the boart boart wheel surface, while utilizes the cast iron removal gold of mixed electrode At the top of hard rock abrasive grain so that wheel face goes out to sharpen grain dressing and repaiies together.
- 7. a kind of mirror grinding method of brait grinding wheel according to claim 6, it is characterised in that：The pulse electricity The open-circuit voltage of spark discharge be 10~200 volts, electric current for 1~10 peace, pulse width be 1~200 microsecond, the pulse spacing 1 ~200 microseconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810088140.7A CN108177030A (en) | 2018-01-30 | 2018-01-30 | A kind of mirror grinding method of brait grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810088140.7A CN108177030A (en) | 2018-01-30 | 2018-01-30 | A kind of mirror grinding method of brait grinding wheel |
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| CN108177030A true CN108177030A (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810088140.7A Pending CN108177030A (en) | 2018-01-30 | 2018-01-30 | A kind of mirror grinding method of brait grinding wheel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340739A (en) * | 2019-07-05 | 2019-10-18 | 华南理工大学 | A kind of smooth method for grinding of metal based on heating power control |
| CN112548686A (en) * | 2020-12-01 | 2021-03-26 | 常州晶业液态金属有限公司 | Material removing processing method of amorphous alloy product |
| CN113370080A (en) * | 2021-05-18 | 2021-09-10 | 河南科技大学 | Grinding wheel dressing method capable of automatically adjusting discharge voltage |
| CN114131516A (en) * | 2021-12-09 | 2022-03-04 | 郑州磨料磨具磨削研究所有限公司 | Grinding wheel with controllable machining roughness and grinding process |
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| CN102490121A (en) * | 2011-11-24 | 2012-06-13 | 华南理工大学 | Method for finishing V-shaped sharp angle of metal-base diamond grinding wheel by electrical discharge grinding in gas |
| CN103395002A (en) * | 2013-07-24 | 2013-11-20 | 华南理工大学 | In-gas discharge dressing and truing method for large-particle diamond grinding wheel |
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| US6244939B1 (en) * | 1998-08-19 | 2001-06-12 | Riken | Micro-discharge truing device and fine machining method using the device |
| CN102490121A (en) * | 2011-11-24 | 2012-06-13 | 华南理工大学 | Method for finishing V-shaped sharp angle of metal-base diamond grinding wheel by electrical discharge grinding in gas |
| CN103395002A (en) * | 2013-07-24 | 2013-11-20 | 华南理工大学 | In-gas discharge dressing and truing method for large-particle diamond grinding wheel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340739A (en) * | 2019-07-05 | 2019-10-18 | 华南理工大学 | A kind of smooth method for grinding of metal based on heating power control |
| CN110340739B (en) * | 2019-07-05 | 2021-08-06 | 华南理工大学 | Metal smooth grinding method based on thermal control |
| CN112548686A (en) * | 2020-12-01 | 2021-03-26 | 常州晶业液态金属有限公司 | Material removing processing method of amorphous alloy product |
| CN113370080A (en) * | 2021-05-18 | 2021-09-10 | 河南科技大学 | Grinding wheel dressing method capable of automatically adjusting discharge voltage |
| CN113370080B (en) * | 2021-05-18 | 2022-09-13 | 河南科技大学 | Grinding wheel dressing method capable of automatically adjusting discharge voltage |
| CN114131516A (en) * | 2021-12-09 | 2022-03-04 | 郑州磨料磨具磨削研究所有限公司 | Grinding wheel with controllable machining roughness and grinding process |
| CN114131516B (en) * | 2021-12-09 | 2023-01-31 | 郑州磨料磨具磨削研究所有限公司 | Grinding wheel with controllable machining roughness and grinding process |
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Application publication date: 20180619 |
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