CN102019585B - Method for precisely finishing V-shaped sharp corner of diamond grinding wheel based on numerical control mutual wear molding - Google Patents
Method for precisely finishing V-shaped sharp corner of diamond grinding wheel based on numerical control mutual wear molding Download PDFInfo
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- CN102019585B CN102019585B CN2010105032138A CN201010503213A CN102019585B CN 102019585 B CN102019585 B CN 102019585B CN 2010105032138 A CN2010105032138 A CN 2010105032138A CN 201010503213 A CN201010503213 A CN 201010503213A CN 102019585 B CN102019585 B CN 102019585B
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Abstract
The invention discloses a method for precisely finishing a V-shaped sharp corner of a diamond grinding wheel based on numerical control mutual wear molding, which comprises the following steps of: fixing a diamond grinding wheel cutter on a grinding wheel shaft, fixing a silicon carbide rubbing brick on a horizontal plane, causing the diamond grinding wheel cutter to move rightwards from the left along the axial direction of the grinding wheel shaft at the same time of moving upwards from the bottom along with the grinding wheel shaft in a vertical plane vertical to the horizontal plane to form a V-shaped moving line of which a left side is upwards inclined, and grinding the right side of the diamond grinding wheel cutter; and changing the direction of the diamond grinding wheel cutter, causing the diamond grinding wheel cutter to move leftwards from the right along the axial direction of the grinding wheel shaft at the same time of moving upwards from the bottom along with the grinding wheel shaft to form the V-shaped moving line of which the right side is upwards inclined, and grinding the left side of the diamond grinding wheel cutter. The method can be used for performing precise micro-finishing on the V-shaped sharp corner of a superhard diamond grinding wheel tool difficult to machine without the limitation of the shape of a finishing tool.
Description
Technical field
The present invention relates to the fine accurate manufacturing technology field of sintered carbide tools, be specifically related to the micro-structural function surface Machine Manufacturing Technology of hard brittle workpiece such as a kind of pottery, monocrystalline silicon, optical glass, carbide alloy.
Background technology
Component surface processes micron order space structure surface, can produce new optical property, physical property and mechanical performance.For example, the little V groove of the leaded light of LCD substrate, photovoltaic silicon wafer antireflective micro-structural function surface, the heat sinking function surface channel of notebook computer etc.At present, the mature technology of microfabrication is to adopt fine machining methods such as light, electron beam, ion beam, chemical attack.Because the noncontact process principle that these methods adopt, so working (machining) efficiency is extremely low and the production cycle is long, and be attended by that corrosive liquid is hard to manage, environmental problems such as hazardous gas and radio-frequency power.
Efficient Machine Manufacturing Technology mainly depends on the machinery of sintered carbide tools and removes process technology, and still, the manufacturing technology of fine instrument and control are present technical bottlenecks.In machining, superhard fragile material such as the skive instrument is compared with cutters such as carbide alloy can processing ceramic, glass, monocrystalline silicon.But; The most advanced and sophisticated dressing technique of skive instrument V-arrangement does not break through at present as yet, so the processing of the micro-structural function surface of high added value parts such as monocrystalline silicon, silicon carbide ceramics, optical glass still depends on the fine machining method of on-mechanical contacts such as high energy beam and chemistry.
Therefore, make the skive of fine tip and control its wearing and tearing, realize the micro-structure surface machining of hard brittle material.This compare with microfabrication such as the high energy beam of on-mechanical contact and chemistry have the working (machining) efficiency height, characteristics such as low, the no corrosive liquid processing of production cost.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, the numerical control that a kind of ultrahard diamond emery wheel instrument V-arrangement wedge angle is provided realizes the fine Precision Machining of mechanical system to the mill method for trimming to the hard brittle material parts.This method can be carried out the fine precise dressing of V wedge angle to unmanageable ultrahard diamond emery wheel instrument, does not receive the restriction of dressing tool shape.
The object of the invention is realized through following technical scheme:
A kind of based on numerical control to wearing into the skive V-arrangement wedge angle precise dressing method of type: the skive cutter is fixed on the grinding wheel spindle; Rubbing brick made of sillicon carbide is fixed on the horizontal plane; The skive cutter is advanced along the grinding wheel spindle axial direction when moving from down to up on the perpendicular of grinding wheel spindle in vertical level from left to right; Form the acclivitous walking route in walking path left side of V-arrangement, grinding is carried out on skive cutter right side; With skive cutter conversion direction; The skive cutter is advanced along the grinding wheel spindle axial direction when moving from down to up with grinding wheel spindle from right to left; Form the acclivitous walking route in walking path right side of V-arrangement, grinding is carried out in skive cutter left side; The acclivitous walking route in acclivitous walking route in this left side and right side constitutes the walking path of the intersection V-arrangement of skive cutter, and the angle of the crossing of the walking path of this intersection V-arrangement is a V-arrangement walking path angle beta, 50 degree≤β≤70 degree; The skive cutter when intersecting the walking path motion of V-arrangement, with fixing rubbing brick made of sillicon carbide to mill; The skive cutter divides 2-5 feeding at the walking path of intersection V-arrangement, at first adopts 50～80 microns feeding depth, adopts 5～10 microns feeding depth again, and adopting feeding depth at last is zero zero finishing.
For further realizing the object of the invention, said rubbing brick made of sillicon carbide preferably is made up of friendly silicon carbide grinding materials, and bond is a pottery, and granularity is 180～1200 orders.
Said skive cutter is made up of diamond abrasive, and bond is a bronze, and the diamond abrasive granularity is 600～1500 orders, and concentration is greater than 4.4 carats/cm
3
Preferred employing water or water-soluble metalworking liquid are cooling fluid in the finishing.
The present invention compared with prior art has following advantage and beneficial effect:
(1) this invention can be used for the fine machining of hard fragility component surface, compares with microfabrication such as light, chemistry, and working (machining) efficiency is higher, and cost is low, and does not have unmanageable corrosive liquid.
(2) this invention can be carried out the fine precise dressing of V-arrangement wedge angle to hard grinding wheels such as diamond, cBN, and prior art only can the precise dressing carbide alloy etc. universal cutter.
(3) the skive contour shape of traditional method for trimming depends on the form accuracy of dressing tool, and this invention does not limit the tool shape of finishing, and production is flexible more, practicality is wider.
(4) numerical control of this invention is compared with abrasive fluid abrasive disk machine finish method the mill method for trimming, has higher dressing efficiency, and can eliminate unmanageable lapping liquid.
Description of drawings
Fig. 1 is the sketch map of the numerical control of skive V-arrangement wedge angle to the mill finishing.
The specific embodiment
For better understanding the present invention, below in conjunction with accompanying drawing and embodiment the present invention is made further description, but the scope of protection of present invention is not limited to the scope that embodiment representes.Rotate at a high speed
As shown in Figure 1, skive cutter 1 is fixed on the grinding wheel spindle 2, rubbing brick made of sillicon carbide 4 is fixed on the horizontal plane, and grinding wheel spindle 2 can move up and down on the perpendicular of vertical level; Skive cutter 1 can be advanced along grinding wheel spindle 2 axial directions on the one hand, can move up and down with grinding wheel spindle 2 on the other hand; Skive cutter 1 is advanced along grinding wheel spindle 2 axial directions when moving from down to up with grinding wheel spindle 2 from left to right, forms the acclivitous walking route in walking path 3 left sides of V-arrangement shown in Figure 1, and grinding is carried out on skive cutter 1 right side; With skive cutter 1 conversion direction; Skive cutter 1 is advanced along grinding wheel spindle 2 axial directions when moving from down to up with grinding wheel spindle 2 from right to left; Form the acclivitous walking route in walking path 3 right sides of V-arrangement shown in Figure 1, grinding is carried out in skive cutter 1 left side; The acclivitous walking route of acclivitous walking route in this left side and right side is along the vertical line left-right symmetric in crosspoint; Constitute the walking path 3 of the intersection V-arrangement of skive cutter 1; The angle of the crossing of the walking path 3 of this intersection V-arrangement is a V-arrangement walking path angle beta, 50 degree≤β≤70 degree; Skive cutter 1 is when walking path 3 motions of intersection V-arrangement, with fixing 4 pairs of mills of rubbing brick made of sillicon carbide.Rubbing brick made of sillicon carbide preferably is made up of friendly silicon carbide grinding materials, and bond is a pottery, and granularity is 180～1200 orders; Skive cutter 1 is made up of diamond abrasive, and bond is a metal, and the diamond abrasive granularity is 600～1500 orders, and concentration is greater than 100, and concentration is meant the diamond content of emery wheel unit volume, and 100 are equivalent to 4.4 carats/cm
3Skive cutter 1 at first adopts thick finishing intersecting walking path 2-5 the feeding in 3 fens of V-arrangement, and feeding depth is 50～80 microns; After the most advanced and sophisticated moulding of emery wheel V-arrangement, adopt finish trimming again, feeding depth is 5～10 microns; Adopt zero finishing at last, feeding depth is zero during finishing.Adopting water or water-soluble metalworking liquid in the finishing is cooling fluid.
In this method for trimming, regardless of the shape of rubbing brick made of sillicon carbide, the axial profile of the skive cutter 1 that is trimmed finally forms the V-arrangement wedge angle.The V-arrangement wedge angle angle [alpha] of skive cutter 1 equals the angle beta of V-arrangement intersection walking path, 50 degree≤β≤70 degree; The feeding depth that adopts more fine-grained rubbing brick made of sillicon carbide and reduce to repair can reduce the arc radius r and the form error of emery wheel instrument V-arrangement wedge angle.
Embodiment
At CNC precision grinder (SMRART B818) the skive cutter 1 of diameter 150mm is installed, rectangular finishing rubbing brick made of sillicon carbide 4, on work top along the thickness direction of grinding stone and grinding wheel spindle to being consistent.The skive granularity is #600, and bond is a bronze, concentration 100%.Finishing rubbing brick made of sillicon carbide 4 is a #180 green silicon carbide grinding stone, and bond is a pottery.
As shown in Figure 1, the V-arrangement walking path angle beta of emery wheel is designed to 60 degree, grinding wheel speed N=3000 rev/min, emery wheel feed speed v
fIt is 80 millimeters/minute.At first, employing is finishing slightly, and feeding depth a is 50 microns, when being trimmed to the V wedge angle, adopts finish trimming again, and feeding depth a is 5 microns, adopts zero finishing 2 times at last, the cooling fluid water-soluble grinding fluid of BM2.After the finishing, the detection angles of skive V-arrangement wedge angle α is 60.45 degree, and the wedge angle radius r is 28.4 microns, and the fine diamond abrasive particle can be by dressing on skive V-arrangement wedge angle.
Present embodiment can be with ultrahard diamond crushing forming V-shape wedge angle, the wedge angle angle can control to 60 the degree and below, tolerance can control to 0.5 the degree in, V groove wedge angle arc radius can be less than 30 microns.
Claims (4)
- One kind based on numerical control to wearing into the skive V-arrangement wedge angle precise dressing method of type; It is characterized in that: the skive cutter is fixed on the grinding wheel spindle; Rubbing brick made of sillicon carbide is fixed on the horizontal plane; The skive cutter is advanced along the grinding wheel spindle axial direction when moving from down to up on the perpendicular of grinding wheel spindle in vertical level from left to right, forms the acclivitous walking route in walking path left side of V-arrangement, and grinding is carried out on skive cutter right side; With skive cutter conversion direction; The skive cutter is advanced along the grinding wheel spindle axial direction when moving from down to up with grinding wheel spindle from right to left; Form the acclivitous walking route in walking path right side of V-arrangement, grinding is carried out in skive cutter left side; The acclivitous walking route of acclivitous walking route in this left side and right side is along the vertical line left-right symmetric in crosspoint; Constitute the walking path of the intersection V-arrangement of skive cutter; The angle of the crossing of the walking path of this intersection V-arrangement is a V-arrangement walking path angle beta, 50 degree≤β≤70 degree; The skive cutter divides 2-5 feeding at the walking path of intersection V-arrangement, at first adopts 50～80 microns feeding depth, adopts 5～10 microns feeding depth again, and adopting feeding depth at last is zero zero finishing.
- According to claim 1 said based on numerical control to wearing into the skive V-arrangement wedge angle precise dressing method of type, it is characterized in that: said rubbing brick made of sillicon carbide is made up of friendly silicon carbide grinding materials, bond be the pottery, granularity is 180～1200 orders.
- According to claim 1 said based on numerical control to wearing into the skive V-arrangement wedge angle precise dressing method of type; It is characterized in that: said skive cutter is made up of diamond abrasive; Bond is a bronze, and the diamond abrasive granularity is 600～1500 orders, and concentration is greater than 4.4 carats/cm 3, said concentration is meant the diamond content of emery wheel unit volume.
- According to claim 1 said based on numerical control to wearing into the skive V-arrangement wedge angle precise dressing method of type, it is characterized in that: the boart boart wheel speed is greater than 2000 rev/mins in the finishing, and adopting water or water-soluble metalworking liquid is cooling fluid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105032138A CN102019585B (en) | 2010-10-09 | 2010-10-09 | Method for precisely finishing V-shaped sharp corner of diamond grinding wheel based on numerical control mutual wear molding |
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| CN2010105032138A CN102019585B (en) | 2010-10-09 | 2010-10-09 | Method for precisely finishing V-shaped sharp corner of diamond grinding wheel based on numerical control mutual wear molding |
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| CN102019585A CN102019585A (en) | 2011-04-20 |
| CN102019585B true CN102019585B (en) | 2012-07-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN103770006B (en) * | 2014-01-22 | 2017-04-12 | 西安工业大学 | Method for finishing diamond grinding wheel by utilizing electric spark, as well as disc-shaped electrode and device adopted |
| CN105415194A (en) * | 2015-10-29 | 2016-03-23 | 中国科学院长春光学精密机械与物理研究所 | On-site finishing method for resin-based diamond grinding wheel |
| CN110340739B (en) * | 2019-07-05 | 2021-08-06 | 华南理工大学 | Metal smooth grinding method based on thermal control |
| CN113084707B (en) * | 2021-03-05 | 2022-06-14 | 华南理工大学 | Fuzzy control method for diamond mechanical thermo-chemical trimming energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SE363260B (en) * | 1972-06-02 | 1974-01-14 | Lidkoepings Mekaniska Verkstad | |
| DE2834149C2 (en) * | 1978-08-04 | 1982-08-12 | Dieter Dr.-Ing. 7505 Ettlingen Wiener | Dressing device for a device working with a cup grinding wheel for grinding spiral-toothed bevel gears |
| CN201064876Y (en) * | 2007-08-10 | 2008-05-28 | 荆州环宇汽车零部件有限公司 | Grinder grinding wheel finishing tool bit with V-shape structure |
| CN101508095A (en) * | 2009-03-18 | 2009-08-19 | 洛阳轴研科技股份有限公司 | Design execution method of flat-surface grinding machine simple wheel dresser |
| CN101733706B (en) * | 2010-01-07 | 2012-10-03 | 镇江液压件厂有限责任公司 | Method for realizing expansion trimming in formation grinding of cycloid wheel |
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