CN101745667A - Milling method of organic glass light guide plate - Google Patents
Milling method of organic glass light guide plate Download PDFInfo
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- CN101745667A CN101745667A CN200810232723A CN200810232723A CN101745667A CN 101745667 A CN101745667 A CN 101745667A CN 200810232723 A CN200810232723 A CN 200810232723A CN 200810232723 A CN200810232723 A CN 200810232723A CN 101745667 A CN101745667 A CN 101745667A
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Abstract
The invention relates to a milling method of an organic glass light guide plate. The method adopts a milling cutter made of high-speed tool steel, the front angle of the milling cutter is 12-16 degrees, the rear angle of the milling cutter is 20-25 degrees, the cutter point R is 0.8-2mm, and the negative chamfer is 0.1-0.2mm. A press plate or a vice is used to clamp parts, and a backing plate is respectively arranged on the upper surface and the lower surface of an organic glass light guide plate. During the milling of the outer form of the organic glass light guide plate, the milling depth for rough milling is less than or equal to 2mm, the milling depth for fine milling is less than 0.5mm, an inner form line is drawn on the backing plates of the organic glass light guide plate; the milling depth is less than 1.0mm during the milling of the inner form of the organic glass light guide plate, and a hand crank is used to realize the feeding at a constant speed; and the milling depth can be adjusted according to the allowance for processing of the organic glass light guide plate. Due to the technical scheme, the invention can effectively avoid the cracking, internal stress and deformation of the organic glass light guide plate during the milling process, and the processed part has the advantages of no crazing on the surface, smooth pore wall and good light transmission.
Description
One, technical field
The present invention relates to the field of machining of non-metal workpiece, specifically is a kind of milling method of organic glass light guide plate.
Two, background technology
Lucite belongs to thermoplastic, is a kind of nonmetallic materials of using always, because its matter is more crisp, and case hardness is not enough.Cutting parameter, the tool geometry angle chosen in processing in the past are unreasonable, and the lucite marginal existence falls slag, the phenomenon of bursting apart; During shape (as groove, hole), cutter does not withdraw from workpiece rapidly causes the fraction time of cutter and workpiece to increase in the processing lucite, and surface quality reduces, the carrying out of road polishing process after the influence, and its inside also is easy to generate internal stress and distortion; It is improper that clamping and compressing method are selected, and the lucite surface is well protected.Owing to above reason, lucite inside is easy to generate internal stress and distortion, crazing will occur after of long duration, and the rough light transmission that influences of hole wall.
Three, summary of the invention
For overcoming prior art in processing lucite process, lucite is produced burst apart, internal stress and distortion, cause lucite crazing to occur, and the hole wall of processing is rough, so that influence the deficiency of its light transmission, the present invention proposes a kind of milling method of organic glass light guide plate.
The present invention is by reasonably choosing milling cutter, tool geometrical parameter and milling usage, and to realize purpose of the present invention, its detailed process is:
1. tool selection: select the material of high-speed tool steel for use as the processing organic glass light guide plate.
2. determine the geometric parameter of cutter: the anterior angle of milling cutter is 12 °～16 °, and relief angle is 20 °～25 °, and point of a knife R is 0.8mm～2mm, and negative chamfered edge is got 0.1mm～0.2mm.
3. determine the speed of mainshaft: the speed of mainshaft is selected 750 rev/mins～850 rev/mins, and the speed of mainshaft is that 800 rev/mins of cutting abilities are best.
4. clamping and compress organic glass light guide plate: adopt pressing plate or vice clamping organic glass light guide plate.
During the inside and outside shape of milling organic glass light guide plate, all can adopt pressing plate to come clamping.A n to be processed organic glass light guide plate is stacked together, and the organic glass light guide plate upper surface after stacking and lower surface are settled with thickness respectively to be the backing plate that 2mm～3mm phenolic aldehyde lamination fabric swatch is made, not to be scratched with protection organic glass light guide plate surface; The thickness sum of the thickness of n organic glass light guide plate and 2 backing plates is less than 40mm.The height of parallels or with n organic glass light guide plate thickness and two plate thickness sums, perhaps a little more than n organic glass light guide plate thickness and two plate thickness sums.Institute's the raised area is no more than 2mm.N organic glass light guide plate and two backing plate clampings are put in place.Parallels is placed under the pressing plate reposefully, and the position of pressing plate is tightened up with hold-down bolt near the cutting position as far as possible.
As organic glass light guide plate appearance and size≤160mm * 100mm, during milling organic glass light guide plate profile, adopt the vice clamping.A n to be processed organic glass light guide plate is stacked together, and settling with thickness respectively on the organic glass light guide plate surface that stacks the two ends, back is the backing plate that 2mm～3mm phenolic aldehyde lamination fabric swatch is made, and is not scratched with protection organic glass light guide plate surface.The thickness sum of the thickness of n organic glass light guide plate and 2 backing plates is less than 80mm.Clamping on vice puts in place and tightens up with n organic glass light guide plate and two backing plates.
5. milling organic glass light guide plate profile: each machined surface of milling organic glass light guide plate one by one.The milling of organic glass light guide plate profile comprises rough mills and finish-milling: the milling depth≤2mm that rough mills, and adjust milling depth according to the allowance of part; Milling depth＜the 0.5mm of finish-milling, and adjust milling depth according to the allowance of part.
6. draw shape line in the organic glass light guide plate: shape line on the backing plate of the organic glass light guide plate of finishing sharp processing, marking.
7. shape in the milling organic glass light guide plate: when the interior shape of milling organic glass light guide plate, milling depth＜1.0mm, and adjust milling depth according to allowance; Hand at the uniform velocity feeding.
8. according to specification requirement, organic glass light guide plate is carried out polishing.
Because the technical solution used in the present invention, avoid effectively producing in the organic glass light guide plate milling process burst apart, internal stress and distortion, to guarantee its no crazing in surface of processing back, hole wall is smooth and light transmission good.
Four, description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is an organic glass light guide plate milling work flow schematic diagram.
Five, the specific embodiment
Embodiment one
The present embodiment material is the LGP part of processing lucite YB-1 δ 3.0mm, and the maximum appearance and size 260mm * 110mm of this part adopts the X5025A vertical knee-type milling machine; The scope of processing comprises the profile and the interior shape of milling part, groove and hole on the interior shape nulling spare of part.Select for use phenolic aldehyde lamination fabric swatch as backing plate, the thickness of backing plate is 3mm.8 parts of clamping of present embodiment, the thickness of each part is 3.0mm.The gross thickness summation of backing plate and part is 30mm, selects for use highly to be the parallels of 30mm.Adopt pressing plate to come clamping.Do not use cutting fluid, use the exhausting chip removal.
Specific process is:
1. tool selection: because pmma material hardness is low, matter is more crisp, poor impact resistance, and the toughness of high-speed steel is better, can grind sharp cutting edge, so select the high-speed steel slotting cutter for use.
2. determine the geometric parameter of cutter: 16 ° of the anterior angles of milling cutter; 22 ° of relief angles, point of a knife R is 0.8mm, negative chamfered edge is 0.15mm.
3. clamping and compress part: scratch or impression for preventing to have at piece surface, present embodiment adopts the pressing plate clamping parts.8 parts to be processed are stacked together, settle backing plate respectively, be not scratched with the protection piece surface at the upper surface of the superiors' part and the lower surface of orlop part.8 parts and two backing plate clampings are put in place.Parallels is placed under the pressing plate reposefully, and the position of pressing plate is tightened up with hold-down bolt near the cutting position as far as possible.
4. milling part profile: during milling part profile, the speed of mainshaft is selected 800 rev/mins, amount of feeding 205mm/min.The milling of part profile comprises rough mills and finish-milling: when rough milling, and milling depth 2mm, and adjust milling depth according to the allowance of part; During finish-milling, milling depth is 0.3mm, and adjusts milling depth according to the allowance of part.Behind a machined surface of the intact part of milling, unclamp pressing plate, the position of the adjusting part new clamping of laying equal stress on, the next machined surface of milling is until the milling of finishing the part profile.
5. draw shape line in the part: shape line on the backing plate of the machine glass LGP of finishing sharp processing, marking.
6. shape in the milling part: when the interior shape of milling part, the speed of mainshaft is 800 rev/mins, and milling depth is 0.2mm, and adjusts milling depth according to allowance; Hand at the uniform velocity feeding, in time withdrawing and removing smear metal reduce the friction between cutter and part.
7. according to specification requirement, part is carried out polishing.
The organic glass light guide plate part of present embodiment milling, its surface does not scratch, impression, do not produce in the process burst apart, internal stress and distortion, guaranteed its no crazing in surface of processing back, hole wall is smooth and light transmission good.
Embodiment two
The present embodiment material is the LGP part of processing lucite YB-2 δ 2.0mm, and the maximum appearance and size 200mm * 80mm of this part adopts the X5025A vertical knee-type milling machine; The scope of processing comprises the profile and the interior shape of milling part, groove and hole on the interior shape nulling spare of part.Select for use phenolic aldehyde lamination fabric swatch as backing plate, the thickness of backing plate is 2mm.10 parts of clamping of present embodiment, the thickness of each part is 2.0mm.The gross thickness summation of backing plate and part is 24mm, selects for use highly to be the parallels of 25mm.Adopt pressing plate to come clamping.Do not use cutting fluid, use the exhausting chip removal.
Specific process is:
1. tool selection: because pmma material hardness is low, matter is more crisp, poor impact resistance, and the toughness of high-speed steel is better, can grind sharp cutting edge, so select the high-speed steel slotting cutter for use.
2. determine the geometric parameter of cutter: 12 ° of the anterior angles of milling cutter; 20 ° of relief angles, point of a knife R is 1.5mm, negative chamfered edge is 0.1mm.
3. clamping and compress part: scratch or impression for preventing to have at piece surface, present embodiment adopts the pressing plate clamping parts.10 parts to be processed are stacked together, settle backing plate respectively, be not scratched with the protection piece surface at the upper surface of the superiors' part and the lower surface of orlop part.10 parts and two backing plate clampings are put in place.Parallels is placed under the pressing plate reposefully, and the position of pressing plate is tightened up with hold-down bolt near the cutting position as far as possible.
4. milling part profile: during milling part profile, the speed of mainshaft is selected 800 rev/mins, amount of feeding 205mm/min.The milling of part profile comprises rough mills and finish-milling: when rough milling, and milling depth 2mm, and adjust milling depth according to the allowance of part; During finish-milling, milling depth is 0.2mm, and adjusts milling depth according to the allowance of part.Behind a machined surface of the intact part of milling, unclamp pressing plate, the position of the adjusting part new clamping of laying equal stress on, the next machined surface of milling is until the milling of finishing the part profile.
5. draw shape line in the part: shape line on the backing plate of the machine glass LGP of finishing sharp processing, marking.
6. shape in the milling part: when the interior shape of milling part, the speed of mainshaft is 800 rev/mins, and milling depth is 0.2mm, and adjusts milling depth according to allowance; Hand at the uniform velocity feeding, in time withdrawing and removing smear metal reduce the friction between cutter and part.
7. according to specification requirement, part is carried out polishing.
The organic glass light guide plate part of present embodiment milling, its surface does not scratch, impression, do not produce in the process burst apart, internal stress and distortion, guaranteed its no crazing in surface of processing back, hole wall is smooth and light transmission good.
Embodiment three
The present embodiment material is the LGP part of processing lucite YB-1 δ 6.0mm, and the maximum appearance and size 300mm * 120mm of this part adopts the X5025A vertical knee-type milling machine; The scope of processing comprises the profile and the interior shape of milling part, groove and hole on the interior shape nulling spare of part.Select for use phenolic aldehyde lamination fabric swatch as backing plate, the thickness of backing plate is 3mm.5 parts of clamping of present embodiment, the thickness of each part is 6.0mm.The gross thickness summation of backing plate and part is 36mm, selects for use highly to be the parallels of 36mm.Adopt pressing plate to come clamping.Do not use cutting fluid, use the exhausting chip removal.
Specific process is:
1. tool selection: because pmma material hardness is low, matter is more crisp, poor impact resistance, and the toughness of high-speed steel is better, can grind sharp cutting edge, so select the high-speed steel slotting cutter for use.
2. determine the geometric parameter of cutter: 14 ° of the anterior angles of milling cutter; 25 ° of relief angles, point of a knife R is 2.0mm, negative chamfered edge is 0.2mm.
3. clamping and compress part: scratch or impression for preventing to have at piece surface, present embodiment adopts the pressing plate clamping parts.5 parts to be processed are stacked together, settle backing plate respectively, be not scratched with the protection piece surface at the upper surface of the superiors' part and the lower surface of orlop part.5 parts and two backing plate clampings are put in place.Parallels is placed under the pressing plate reposefully, and the position of pressing plate is tightened up with hold-down bolt near the cutting position as far as possible.
4. milling part profile: during milling part profile, the speed of mainshaft is selected 800 rev/mins, amount of feeding 205mm/min.The milling of part profile comprises rough mills and finish-milling: when rough milling, and milling depth 2mm, and adjust milling depth according to the allowance of part; During finish-milling, milling depth is 0.4mm, and adjusts milling depth according to the allowance of part.Behind a machined surface of the intact part of milling, unclamp pressing plate, the position of the adjusting part new clamping of laying equal stress on, the next machined surface of milling is until the milling of finishing the part profile.
5. draw shape line in the part: shape line on the backing plate of the machine glass LGP of finishing sharp processing, marking.
6. shape in the milling part: when the interior shape of milling part, the speed of mainshaft is 800 rev/mins, and milling depth is 0.3mm, and adjusts milling depth according to allowance; Hand at the uniform velocity feeding, in time withdrawing and removing smear metal reduce the friction between cutter and part.
7. according to specification requirement, part is carried out polishing.
The organic glass light guide plate part of present embodiment milling, its surface does not scratch, impression, do not produce in the process burst apart, internal stress and distortion, guaranteed its no crazing in surface of processing back, hole wall is smooth and light transmission good.
Embodiment four
The present embodiment material is the LGP part of processing lucite YB-2 δ 2.0mm, and the maximum appearance and size 160mm * 100mm of this part adopts the X5025A vertical knee-type milling machine; The scope of processing is the profile of milling part.Select for use phenolic aldehyde lamination fabric swatch as backing plate, the thickness of backing plate is 2mm.12 parts of clamping of present embodiment, the thickness of each part is 2.0mm.The gross thickness summation of backing plate and part is 28mm.Adopt vice to come clamping.Do not use cutting fluid, use the exhausting chip removal.
Specific process is:
1. tool selection: because pmma material hardness is low, matter is more crisp, poor impact resistance, and the toughness of high-speed steel is better, can grind sharp cutting edge, so select the high-speed steel slotting cutter for use.
2. determine the geometric parameter of cutter: 12 ° of the anterior angles of milling cutter; 20 ° of relief angles, point of a knife R is 2mm, negative chamfered edge is 0.15mm.
3. clamping and compress part: scratch or impression for preventing to have at piece surface, present embodiment adopts the vice clamping parts.12 parts to be processed are stacked together, settle backing plate respectively, be not scratched with the protection piece surface at the piece surface that stacks the two ends, back.Clamping on vice puts in place and tightens up with 12 parts and two backing plates.
4. milling part profile: during milling part profile, the speed of mainshaft is selected 800 rev/mins, amount of feeding 205mm/min.The milling of part profile comprises rough mills and finish-milling: when rough milling, and milling depth 2mm, and adjust milling depth according to the allowance of part; During finish-milling, milling depth is 0.4mm, and adjusts milling depth according to the allowance of part.Behind a machined surface of the intact part of milling, unclamp vice, the position of the adjusting part new clamping of laying equal stress on, the next machined surface of milling is until the milling of finishing the part profile.
5. according to specification requirement, part is carried out polishing.
The organic glass light guide plate part of present embodiment milling, its surface does not scratch, impression, do not produce in the process burst apart, internal stress and distortion, guaranteed its no crazing in surface of processing back, hole wall is smooth and light transmission good.
Claims (5)
1. the milling method of an organic glass light guide plate is characterized in that, the detailed process of milling processing is:
A. select the high-speed tool steel milling cutter for use;
B. determine the geometric parameter of cutter; The anterior angle of milling cutter is 12 °～16 °, and relief angle is 20 °～25 °, and point of a knife R is 0.8mm～2mm, and negative chamfered edge is got 0.1mm～0.2mm;
C. determine the speed of mainshaft; The speed of mainshaft is selected 750 rev/mins～850 rev/mins, and the speed of mainshaft is 800 rev/mins;
D. clamping and compress organic glass light guide plate; Adopt pressing plate or vice clamping organic glass light guide plate; A n to be processed organic glass light guide plate is stacked together, and the organic glass light guide plate upper surface after stacking and lower surface are settled backing plate respectively; Or with n organic glass light guide plate and two backing plates clamping on vice puts in place and tightens up;
E. milling organic glass light guide plate profile; Milling depth≤the 2mm that rough mills; Milling depth＜the 0.5mm of finish-milling; Allowance according to organic glass light guide plate in the milling is adjusted milling depth;
F. draw shape line in the organic glass light guide plate; Shape line on the backing plate of organic glass light guide plate, marking;
G. shape in the milling organic glass light guide plate; Milling depth＜1.0mm, and according to allowance adjustment milling depth; Hand at the uniform velocity feeding;
H. according to specification requirement, organic glass light guide plate is carried out polishing.
2. a kind of milling method of organic glass light guide plate according to claim 1 is characterized in that, when adopting pressing plate clamping organic glass light guide plate, the thickness sum of the thickness of n organic glass light guide plate and 2 backing plates is less than 40mm; When adopting vice clamping organic glass light guide plate, the thickness sum of the thickness of n organic glass light guide plate and 2 backing plates is less than 80mm.
3. a kind of milling method of organic glass light guide plate according to claim 1, it is characterized in that, when adopting pressing plate clamping organic glass light guide plate, the height of parallels or with n organic glass light guide plate thickness and two plate thickness sums perhaps slightly exceeds n organic glass light guide plate thickness and two plate thickness sums.
4. a kind of milling method of organic glass light guide plate according to claim 1 is characterized in that described backing plate thickness is that 2mm～3mm phenolic aldehyde lamination fabric swatch is made.
5. as the milling method of a kind of organic glass light guide plate as described in the claim 3, it is characterized in that when the height of parallels was higher than n organic glass light guide plate thickness and two plate thickness sums, institute's the raised area was no more than 2mm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142533A (en) * | 2014-08-20 | 2014-11-12 | 深圳市华星光电技术有限公司 | Machining stack structure and machining mode of light guide plates |
| CN104708090A (en) * | 2015-02-14 | 2015-06-17 | 中钢集团邢台机械轧辊有限公司 | Milling method for high-speed steel roller |
| CN105068172A (en) * | 2015-08-26 | 2015-11-18 | 任大伏 | Light guide plate processing apparatus with multiple input devices |
| CN105068171A (en) * | 2015-08-26 | 2015-11-18 | 任大伏 | Light guide plate processing apparatus with cutter operation apparatus |
| CN112024963A (en) * | 2020-09-02 | 2020-12-04 | 西安精雕软件科技有限公司 | Integral hard alloy end milling cutter with negative chamfering structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4135872A1 (en) * | 1991-10-26 | 1993-04-29 | Borsi Kg F | Method for selective coating of transparent bearer plate of acryl glass - applies embossed foil coat fixed by pressure and heat using roller process |
| CN101144879A (en) * | 2006-09-15 | 2008-03-19 | 鸿富锦精密工业（深圳）有限公司 | Method for manufacturing optical element |
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2008
- 2008-12-22 CN CN2008102327239A patent/CN101745667B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142533A (en) * | 2014-08-20 | 2014-11-12 | 深圳市华星光电技术有限公司 | Machining stack structure and machining mode of light guide plates |
| WO2016026186A1 (en) * | 2014-08-20 | 2016-02-25 | 深圳市华星光电技术有限公司 | Machining stacking structure of light guide plate and machining method of light guide plate |
| CN104708090A (en) * | 2015-02-14 | 2015-06-17 | 中钢集团邢台机械轧辊有限公司 | Milling method for high-speed steel roller |
| CN105068172A (en) * | 2015-08-26 | 2015-11-18 | 任大伏 | Light guide plate processing apparatus with multiple input devices |
| CN105068171A (en) * | 2015-08-26 | 2015-11-18 | 任大伏 | Light guide plate processing apparatus with cutter operation apparatus |
| CN112024963A (en) * | 2020-09-02 | 2020-12-04 | 西安精雕软件科技有限公司 | Integral hard alloy end milling cutter with negative chamfering structure |
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