CN202367611U - Diamond grinding wheel with oval ring-shaped working surface - Google Patents
Diamond grinding wheel with oval ring-shaped working surface Download PDFInfo
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- CN202367611U CN202367611U CN201120396586XU CN201120396586U CN202367611U CN 202367611 U CN202367611 U CN 202367611U CN 201120396586X U CN201120396586X U CN 201120396586XU CN 201120396586 U CN201120396586 U CN 201120396586U CN 202367611 U CN202367611 U CN 202367611U
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- grinding wheel
- skive
- diamond grinding
- working surface
- arc
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Abstract
The utility model discloses a diamond grinding wheel with an oval ring-shaped working surface. The axial cross-sectional profile of the working surface of the diamond grinding wheel is shaped like an elliptical arc, and the end face of the diamond grinding wheel is an oval ring surface. When the diamond grinding wheel is prepared, a diamond grinding wheel cutter is moved from a first starting point outside one side of a silicon carbide grindstone on the left to the vertex of the elliptical arc on the right along the elliptical arc movement path, lifted along a first arc with the radius more than 2mm which is tangential to the vertex, moved from a second starting point outside the other side of the millstone on the right to the vertex of the elliptical arc on the left along the elliptical arc movement path, and then lifted along a second arc with the radius more than 2mm which is tangential to the vertex. Compared with the traditional diamond grinding wheel with the ring-shaped working surface, the flat oval ring-shaped working surface of the grinding wheel and a working curved surface can be enveloped for grinding, the number of effective abrasive particles can be increased, and the surface quality and shape accuracy of the ground curved surface can be improved.
Description
Technical field
The utility model relates to the fine accurate manufacturing technology field of sintered carbide tools, is specifically related to elliptical ring working face skive, is the control grinding of hard fragility parts curved surface such as a kind of pottery, monocrystalline silicon, optical glass, carbide alloy.
Background technology
Systems such as laser scanning, Optical Fiber Transmission, solar electrical energy generation, optical illumination need optical interface, and wherein, the curved surfaceization of optical interface is to guarantee the core of high-performance conversion between photoelectricity.But the parts of optoelectronic areas and mould are generally hard brittle materials such as unmanageable silicon carbide ceramics, glass, carbide alloy, adopt traditional numerical control milling technology to be difficult to these curved surface parts of processing.At present, the polishing technology also is difficult to guarantee simultaneously its surface quality and form accuracy, only reliable expensive, inefficient repeatedly compensation processing method.Therefore; Adopt the elliptical ring working surface of skive, in the curve surface grinding of hard fragility parts, utilize more flat emery wheel curved surface and curve surface of workpiece envelope, increase effective abrasive particle number; Compare with the annulus working face of skive, can improve the surface quality and the form accuracy of grinding curved surface.
The utility model content
The purpose of the utility model is to overcome the shortcoming of prior art, and a kind of elliptical ring working face skive is provided, and improves the curve surface grinding efficient and the precision of hard fragility parts.This ellipse ring surface emery wheel can be used for the curved surface accurate grinding processing of hard fragility parts such as pottery, silicon, glass, carbide alloy.
The purpose of the utility model realizes through following technical scheme:
A kind of skive of elliptical ring working face; The working face axial cross section profile of skive is the elliptic arc profile of
; The end face of skive is an ellipse ring surface; Wherein, A and b are given target emery wheel elliptic contour equation constants, a＞0 and b＞0.
Preferably, described a=6, b=2.62.
Preferably, said skive is made up of diamond abrasive, and bond is bronze base or resin-based, and the diamond abrasive granularity is 120～3000 orders, and emery wheel is a parallel grinding wheel, and diameter is 50～800 millimeters, and axial width is 3～50 millimeters.
The utility model compared with prior art has following advantage and beneficial effect:
(1) this utility model can be carried out the moulding finishing to the working curved surface like hard grinding wheels such as skive and cubic boron nitride abrasive wheels, and dressing accuracy can not rely on the geomery of dressing tool and the restriction of precision, and trimming device is simple, effective.
(2) this utility model can be used for the grinding of parts curved surface, compare the workpiece that can process hard brittle material with Milling Process, and machined surface quality is higher.
(3) this utility model is compared with traditional anchor ring emery wheel, can utilize more flat ellipse ring surface and curve surface of workpiece envelope, increases effective abrasive particle number, improves grinding curved surface quality and form accuracy.
Description of drawings
Fig. 1 is the boart boart wheel construction of elliptical ring working face and the sketch map of finishing.
Fig. 2 is the segmentation sketch map of emery wheel elliptic arc walking path.
Fig. 3 is the test point distribution map of axial cross section elliptic arc behind the diamond grinding wheel dressing
Fig. 4 is detection data and the error map of vertical direction thereof of the elliptic arc of Fig. 3
The specific embodiment
For better understanding the utility model, below in conjunction with accompanying drawing and embodiment the utility model is done further explanation, but the utility model requires the scope of protection to be not limited to the scope that embodiment representes.
As shown in Figure 1; A kind of skive of elliptical ring working face; Its working face axial cross section profile is the elliptic arc profile of
; The end face of skive is an ellipse ring surface; Wherein, a and b are given target emery wheel elliptic contour equation constants, a＞0 and b＞0.
During the skive correction moulding of elliptical ring working face shown in Figure 1, earlier parallel skive 1 is installed on the grinding wheel spindle 2 of lathe, initial diamond grinding wheel 1 is w for width
1Cylinder, working face is the face of cylinder, rubbing brick made of sillicon carbide 3 is fixed on the horizontal plane of workbench, it is w that initial grinding stone is shaped as width
2Cuboid, emery wheel instrument rotating speed is N, the skive 1 that rotates at a high speed around the emery wheel wheel shaft can be advanced towards axial direction along grinding wheel spindle 2, also can along grinding wheel spindle to vertical plane move up and down; Skive 1 is advanced along boart boart wheel shaft 2 axial directions when moving from down to up with boart boart wheel shaft 2 from left to right or from right to left, forms the walking route 4 of ellipse arc shown in Figure 1, and the standard ellipse equation of this elliptic arc does
X, y be respectively through grinding wheel spindle to the emery wheel axial cross section on go up the coordinate of left and right directions and above-below direction; The speed of on the elliptic arc path, walking is v
f, accomplish each round trip after, the downward feeding depth d of skive
f, carry out mill with grinding stone gradually, at this moment, skive is is also worn and torn.
As shown in Figure 2; In order to make 3 pairs of mills of skive 1 and rubbing brick made of sillicon carbide evenly; Guarantee the fairness of the elliptic contour 5 of emery wheel axial cross section; 4 segmentations of skive cutter 1 elliptic arc walking path are accomplished: at first; The first initial point 6 places that skive cutter 1 does not contact with grinding stone outside a side of rubbing brick made of sillicon carbide 3 from left to right run to 7 places, summit of elliptic arc along the elliptic arc walking path 4 of equation for
; Again along with the tangent radius in summit 7 for to mention greater than 2 millimeters first circular arc 8; Then opposite side second starting point 9 from grinding stone begins; Run to 7 places, elliptic arc summit from right to left along elliptic arc walking path 4; Along mentioning greater than 2 millimeters second circular arc 10 with summit 7 tangent other direction radiuses, last again, the zero grinding that skive 1 is done no feeding from the first initial point 6 of rubbing brick made of sillicon carbide 3 one sides along whole elliptic arc walking path 4 runs to second starting point 9 from the grinding stone opposite side.After completion should be processed stroke, emery wheel feeding depth vertically downward was d
f, repeat top process again, until skive working face axial cross section profile is trimmed to
Elliptic arc profile 5, the skive working surface also just forms ellipse ring surface, wherein, a and b are given emery wheel elliptic contour equation constants, w
1＞0, w
2＞0, a＞0, b＞0, d
f=1～200 microns and v
f=10～1000 millimeters/minute.
Rubbing brick made of sillicon carbide 3 is made up of friendly silicon carbide grinding materials, and bond is a pottery, and granularity is 180～1200 orders, and geometry is a rectangle, along grinding wheel spindle to width be 5～30 millimeters; Skive cutter 1 is made up of diamond abrasive; Bond is a bronze Metal Substrate or alkyd resin based, and the diamond abrasive granularity is 120～3000 orders, and concentration is greater than 100; Concentration is meant the diamond content of skive unit volume, and 100 are equivalent to 4.4 carats/centimetre
3, emery wheel is a parallel grinding wheel, and diameter is 50～800 millimeters, and axial width is 3～50 millimeters, and grinding wheel speed is 2000～5000 rev/mins.
At first adopt thick finishing, rubbing brick made of sillicon carbide granularity 120～320 orders, feeding depth d
fBe 50～200 microns, feed speed be 300～800 millimeters/minute after skive axial cross section profile is trimmed to elliptic arc, adopt finish trimming again, rubbing brick made of sillicon carbide granularity 400～1200 orders, feeding depth d
fBe 1～20 micron, feed speed v
fBe 10～200 millimeters/minute, last, zero finishing 2～10 times.Adopting water or water-soluble metalworking liquid in the finishing is cooling fluid.
Embodiment
At CNC precision grinder (SMRART B818) 150 millimeters of diameters and axial width w are installed
1Be 10 millimeters skive cutter 1, axial width w
2The rectangle rubbing brick made of sillicon carbide 3 that is 25 millimeters is placed on the horizontal plane of workbench, and thickness direction and skive along the grinding stone mid portion on work top axially are consistent.The skive granularity is #320, and bond is a resin, concentration 100.Rubbing brick made of sillicon carbide 3 is the green silicon carbide grinding stone, and bond is a pottery.The elliptic arc that grinding wheel spindle is
to cross section profile finishing target for the standard ellipse equation; A=6mm; B=2.62mm, emery wheel working surface are ellipse ring surface.In order to repair this emery wheel ellipse ring surface; The walking path 4 at emery wheel center is designed to elliptic arc; As shown in Figure 1, its normal equation is
i.e.
As shown in Figure 2; To wearing in the type finishing; The rotational speed N of skive 1=3000 rev/min; The standard ellipse equation of emery wheel elliptic arc walking path 4 is
at first; Skive cutter 1 begins from the left initial point 6 of rubbing brick made of sillicon carbide 3, and at this moment, its emery wheel side and grinding stone side are at a distance of 2 millimeters; From left to right run to 7 places, elliptic arc summit along elliptic arc walking path 4 then, again along with summit 7 tangent radiuses be that 3 millimeters first circular arc 8 is mentioned; Following the right side starting point 9 that does not contact with grinding stone from the opposite side of grinding stone begins; At this moment; Emery wheel and grinding stone two at a distance of 2 millimeters, run to 7 places, summit along elliptic arc walking path 4 near the side more from right to left, again along mentioning with second circular arc 10 of 3 millimeters of the tangent other direction radiuses in summit 7; At last, the emery wheel zero grinding of doing no feeding along whole elliptic arc walking path 4 from the left initial point 6 of grinding stone one side runs to the starting point 9 from the grinding stone opposite side.After completion should be processed stroke, emery wheel is feeding depth d vertically downward
f, state process above repeating again.
In finishing, adopt thick finishing and finish trimming two-stage process, when slightly repairing, grinding stone is 240 purpose green silicon carbide grinding stones, feed speed v
fBe 500 millimeters/minute, feeding depth d
fBe 100 microns, when grinding wheel spindle when cross section profile is trimmed to ellipse arc, adopt finish trimming again, grinding stone is 600 purpose green silicon carbide grinding stones, feeding depth d
fBe respectively 100 → 50 → 20 → 10 (unit microns), corresponding feed speed v
fBe 200 → 100 → 50 → 10 millimeters/minute, adopt zero finishing 5 times at last, cooling fluid is with the water-soluble grinding fluid of BM2.After the crushing, its axial cross section profile can form the standard ellipse equation and do
Elliptic arc, its working surface forms ellipse ring surface; The skive that is trimmed to ellipse ring surface is copied on the carbon element plate at a high speed rotatably, utilize the precision coordinate appearance to detect the detection data of its emery wheel axial cross section elliptic arc and the error E of vertical direction thereof
zDistribution map, like Fig. 3, shown in 4, the mean error absolute value E of its emery wheel axial cross section elliptic arc profile
0It is 29.6 microns.
Usually, can know that as long as satisfy the requirement of elliptic equation, a, b all can greater than 0 by this embodiment.
At present, existing technology still fails ultrahard diamond emery wheel instrument is trimmed to ellipse ring surface, and this ellipse ring surface skive is compared with the anchor ring emery wheel, when Free-Form Surface Machining, can improve surface quality and form accuracy.
Claims (3)
1. the skive of an elliptical ring working face, it is characterized in that: the working face axial cross section profile of skive does
The elliptic arc profile, the end face of skive is an ellipse ring surface, wherein,
aWith
bBe given target emery wheel elliptic contour equation constant,
a>0 draw
b>0.
2. the skive of elliptical ring working face according to claim 1 is characterized in that: described a=6, b=2.62.
3. the skive of the said elliptical ring working face of claim 1; It is characterized in that said skive is made up of diamond abrasive, bond is bronze base or resin-based; The diamond abrasive granularity is 120 ~ 3000 orders; Emery wheel is a parallel grinding wheel, and diameter is 50 ~ 800 millimeters, and axial width is 3 ~ 50 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120396586XU CN202367611U (en) | 2011-10-18 | 2011-10-18 | Diamond grinding wheel with oval ring-shaped working surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120396586XU CN202367611U (en) | 2011-10-18 | 2011-10-18 | Diamond grinding wheel with oval ring-shaped working surface |
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| Publication Number | Publication Date |
|---|---|
| CN202367611U true CN202367611U (en) | 2012-08-08 |
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ID=46591334
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120396586XU Expired - Fee Related CN202367611U (en) | 2011-10-18 | 2011-10-18 | Diamond grinding wheel with oval ring-shaped working surface |
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|---|---|
| CN (1) | CN202367611U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350666A (en) * | 2011-10-18 | 2012-02-15 | 华南理工大学 | Diamond grinding wheel of elliptical working face and mutual wear forming and trimming method thereof |
| CN104741994A (en) * | 2015-03-25 | 2015-07-01 | 华南理工大学 | Precise curved-surface grinding method for grinding wheel with any curved surface |
-
2011
- 2011-10-18 CN CN201120396586XU patent/CN202367611U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350666A (en) * | 2011-10-18 | 2012-02-15 | 华南理工大学 | Diamond grinding wheel of elliptical working face and mutual wear forming and trimming method thereof |
| CN104741994A (en) * | 2015-03-25 | 2015-07-01 | 华南理工大学 | Precise curved-surface grinding method for grinding wheel with any curved surface |
| CN104741994B (en) * | 2015-03-25 | 2017-04-19 | 华南理工大学 | Precise curved-surface grinding method for grinding wheel with any curved surface |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20171018 |