CN110253230A - A kind of processing method of light guide plate sawtooth mold insert - Google Patents
A kind of processing method of light guide plate sawtooth mold insert Download PDFInfo
- Publication number
- CN110253230A CN110253230A CN201910637950.8A CN201910637950A CN110253230A CN 110253230 A CN110253230 A CN 110253230A CN 201910637950 A CN201910637950 A CN 201910637950A CN 110253230 A CN110253230 A CN 110253230A
- Authority
- CN
- China
- Prior art keywords
- mold insert
- light guide
- guide plate
- processing method
- copper
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
-
- 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
Abstract
The invention discloses a kind of processing methods of light guide plate sawtooth mold insert, first according to the zigzag fashion of design, draw the processing drawing of copper public affairs serrated face；Then broached-tooth design is processed in copper Gongshang；Finally using the copper public affairs processed as the tool-electrode of spark machine, broached-tooth design is processed on light guide plate mold insert.A kind of processing method of light guide plate sawtooth mold insert of the invention, when processing broached-tooth design using spark machine, no cutting force is generated, therefore the defects of burr and mark groove will not be generated on sawtooth mold insert；In addition, the processing method is high-efficient, precision is high and at low cost.
Description
Technical field
The present invention relates to light guide plate injection mold technologies, and in particular to a kind of processing side of light guide plate sawtooth mold insert
Method.
Background technique
Important feature one of of the light guide plate as backlight module has the function that point light source is converted to area source.It is guide-lighting
The incidence surface of plate is equipped with broached-tooth design, which can play the role of dispersed light, reduces lamp eye phenomenon.In light guide plate plus
In work, light guide plate injection mold, then injection molding light guide plate are processed first.Wherein, sawtooth mold insert is to form light guide plate to enter light
The mold of face broached-tooth design.In the past, grinding machine hand grinding was mainly used to add the processing of sawtooth mold insert, in the mistake of grinding
Cheng Zhong, grinding wheel can be worn, and needed to repair grinding wheel twice and are just capable of processing the workpiece met the size requirements, more time-consuming and laborious；
In addition, process needs are processed one by one in strict accordance with the coordinate of each sawtooth, it is desirable that the spirit height of skilled worker
It concentrates, is otherwise easy error.
Sawtooth mold insert is processed according to wire cutting mode, because the minimum diameter of slow wire feeding copper is 0.1mm, and by sawtooth tooth depth
It is limited with the size of tooth pitch, the internal tooth in broached-tooth design cannot be processed right angle, and only external tooth can just be processed into right angle, therefore nothing
Method is applied in the processing of sawtooth mold insert.
Summary of the invention
The present invention be directed in place of the deficiencies in the prior art, provide a kind of light guide plate high in machining efficiency, machining accuracy is quasi-
The processing method of sawtooth mold insert.
A kind of processing method of light guide plate sawtooth mold insert, comprising the following steps:
S1: according to the zigzag fashion of design, the processing drawing of copper public affairs serrated face is drawn；
S2: in copper, Gongshang processes broached-tooth design；
S3: using the copper public affairs processed as the tool-electrode of spark machine, broached-tooth design is processed on light guide plate mold insert.
A kind of processing method of light guide plate sawtooth mold insert of the invention, it is public by first worked copper public affairs serrated face, then by the copper
Serrated face machines end as spark, removes processing mold insert sawtooth, guarantees that the internal tooth external tooth in the broached-tooth design on sawtooth mold insert is equal
It is processed into right angle, it is ensured that the precision of sawtooth angle；Meanwhile the processing method is generated without cutting force, therefore will not on sawtooth mold insert
The defects of generating burr and mark groove；In addition, the processing method is high-efficient, precision is high and at low cost.
Further, the step S3 specifically includes the following steps:
S31: installation correction is carried out to light guide plate mold insert；
S32: installation correction is carried out to copper public affairs；
S33: the relative position between the face to be processed and copper public affairs serrated face of adjustment light guide plate mold insert；
S34: erosion tooth is carried out to light guide plate mold insert；
S35: light guide plate mold insert is cleaned；
S35: carrying out detection correction to the broached-tooth design on light guide plate mold insert, if its precision meets the requirements, complete the process,
Obtain light guide plate sawtooth mold insert；If its precision is undesirable, repeatedly step S34 and S35, until obtaining meeting required precision
Light guide plate sawtooth mold insert.
Further, the step S32 includes adjustment copper public affairs serrated face position, so that the serrated face and light guide plate mold insert
Face to be processed is mutually perpendicular to.
Further, the face to be processed of light guide plate mold insert is stayed in the horizontal direction with copper public affairs serrated face in the step S33
There is spark position.
Specifically, the size of the spark position is arranged according to the size of pulse current.
Further, also spray has working solution during the erosion tooth of the step S34.
Spray working solution can exclude the carbon slag generated in ablation process as a result,.
Further, the working solution is any one in spark machine oil, kerosene, deionized water or emulsion.
Specifically, the working solution is the medium that viscosity is lower, flash-point is higher and performance is stable.
Further, light guide plate sawtooth mold insert is cleaned using cleaning agent in the step S35.
Further, the cleaning agent is any one in detergent or natural water.
Further, the material of the copper public affairs is any one in red copper, graphite, brass, steel, copper-tungsten or molybdenum.
Specifically, the copper public affairs require to select, good high-melting-point, thermal conductivity, good conductivity, mechanical property be good, thermal expansion coefficient
Material low, easy to process and with preferable resistance of deformation.
Further, broached-tooth design is processed in copper Gongshang using slow wire feeding mode in the step S2.
Specifically, using the broached-tooth design of slow wire feeding cutting machine worked copper Gongshang, it is ensured that its machining accuracy and surface
Roughness.
Further, the SaW pitch l on the copper public affairs serrated face and tooth depth h is the light guide plate sawtooth mold insert sawtooth
Twice of SaW pitch l and tooth depth h on face.
Since the minimum diameter of slow wire feeding copper wire is 0.1mm, therefore the internal tooth on copper public affairs serrated face cannot be processed right angle, therefore
Generally can by copper public affairs serrated face SaW pitch l and tooth depth h be designed than being twice on sawtooth mold insert, and by losing twice
Tooth is come the sawtooth processed on sawtooth mold insert, to guarantee the accuracy of sawtooth angle.
Compared with prior art, the beneficial effects of the present invention are:
A kind of processing method of light guide plate sawtooth mold insert of the invention, when processing broached-tooth design using spark machine, no cutting
Power generates, therefore the defects of burr and mark groove will not be generated on sawtooth mold insert；In addition, the processing method is high-efficient, precision is high
And it is at low cost.
Appended drawing reference
Fig. 1 is the top view of copper public affairs of the present invention；
Fig. 2 is the partial enlarged view in the portion A in Fig. 1；
Fig. 3 is the structural schematic diagram of copper public affairs of the present invention；
Fig. 4 is the top view of sawtooth mold insert of the present invention；
Fig. 5 is the partial enlarged view in the portion B in Fig. 4；
Fig. 6 is the structural schematic diagram of sawtooth mold insert of the present invention；
Fig. 7 is the structural schematic diagram of spark machine of the present invention；
Fig. 8 is the manuscript of spark machine of the present invention electric discharge for the first time；
Fig. 9 is the partial enlarged view in the portion C in Fig. 8；
Figure 10 is second of manuscript to discharge of spark machine of the present invention；
Figure 11 is the partial enlarged view in the portion D in Figure 10.
Wherein, appended drawing reference are as follows:
1, copper is public；11, copper public affairs serrated face；2, light guide plate sawtooth mold insert；21, sawtooth mold insert serrated face；22, groove；3, fiery
Flower machine；31, fixture；32, magnetic platform.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described in the invention
Embodiment be only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to guarantor of the present invention
The range of shield.
The present invention provides a kind of processing methods of light guide plate sawtooth mold insert, comprising the following steps:
(1) it draws the processing drawing of copper public affairs serrated face 11: according to the zigzag fashion of the light guide plate mold insert of layout design, drawing
The processing drawing of copper public affairs serrated face 11；1 selection fusing point of copper public affairs is high, thermal conductivity is high, electric conductivity is high, mechanical property is good, heat is swollen
Swollen coefficient is low, material easy to process and with preferable resistance of deformation.
Refering to fig. 1-3, in the present embodiment, copper public affairs 1 are in rectangular shape, and are made of red copper.
(2) processing of copper public affairs serrated face 11: precision and surface roughness in order to guarantee processing, using low-speed WEDM
Machine copper public affairs serrated face 11.Since the minimum diameter of slow wire feeding copper wire is 0.1mm, therefore the internal tooth on copper public affairs serrated face 11 can not
It is processed into right angle, but fillet.Therefore herein by copper public affairs serrated face 11 SaW pitch l and tooth depth h be processed into than sawtooth mold insert
SaW pitch l and tooth depth h on serrated face 21 are twice.
Refering to Fig. 2 and Fig. 4, in the present embodiment, the SaW pitch l on copper public affairs serrated face 11 is 0.4mm, and tooth depth h is
0.2mm, angle are 90 °；SaW pitch l on sawtooth mold insert serrated face 21 is 0.2mm, and tooth depth h is 0.1mm, and angle is 90 °.
(3) it the processing of 2 serrated face of light guide plate sawtooth mold insert: refering to Fig. 7, is processed using 3 equipment of spark machine, the spark
Machine 3 includes the magnetic platform 32 of fixture 31 and setting in the horizontal plane of setting in the Z-axis direction, and previous step is processed
Tool-electrode of the copper public affairs 1 of serrated face as spark machine 3.
Refering to Fig. 4-6, in the present embodiment, the light guide plate mold insert is also in rectangular shape, and its side is gone back along its length
A groove 22 is offered, the top of the groove 22 is face to be processed.
The processing of the sawtooth mold insert serrated face 21 specifically includes the following steps:
(31) the installation correction of light guide plate mold insert: as shown in fig. 7, light guide plate mold insert to be placed on to the magnetic of spark machine 3 vertically
It inhales on platform 32, the position of sawtooth mold insert is corrected with calibration, and magnetically attractive is fixed；
(32) the installation correction of copper public affairs 1: as Figure 7-8, copper public affairs 1 are clipped on the fixture 31 of spark machine 3, adjust spark
The school position bolt of 3 gauge outfit of machine, keeps the long width position of copper public affairs 1 consistent between two parties with the long width position of light guide plate mold insert, and copper public affairs sawtooth
Face 11 and the face to be processed of light guide plate mold insert are mutually perpendicular to；
(33) between light guide plate mold insert and copper public affairs 1 relative position adjustment: adjustment magnetic platform 32 position, make light guide plate
There are spark positions in the horizontal direction with copper public affairs serrated face 11 in the face to be processed of mold insert；
(34) pre-operational check: check whether magnetic platform 32 is parallel；Whether workpiece shift motion reaches position；Copper public affairs serrated face
Whether 11 is corresponding with the work surface of light guide plate mold insert；Whether copper 1 machining position of public affairs being capable of empty avoiding；
(35) erosion tooth operation for the first time: as Figure 8-9, the machined parameters of spark machine 3 is set, the Z axis of spark machine 3 is allowed to press from both sides
Tool 31 discharges and moves up and down during the work time, while the control switch of working solution being opened, using working solution to light guide plate
Mold insert is sprayed, to exclude the carbon slag generated during erosion tooth, until first time erosion tooth is completed；
In the present embodiment, which uses spark machine oil.
(36) second of erosion tooth operation: as shown in figs. 10-11, the position of magnetic platform 32 is adjusted again, inlays light guide plate
Part moves the tooth pitch (0.2mm) of a sawtooth, and the Z axis fixture 31 on spark machine 3 discharges primary and upper and lower again during the work time
It is mobile, while light guide plate mold insert is sprayed using working solution, to exclude the carbon slag generated during erosion tooth, until second
Tooth is lost to complete；
(37) it cleans: after the completion of Gear shape process for sawing, light guide plate sawtooth mold insert 2 being removed from workbench, and using clear
Lotion cleans magnetic platform 32 and light guide plate sawtooth mold insert 2, and working solution is rinsed well；
In the present embodiment, which selects natural water.
(38) detection correction: light guide plate sawtooth mold insert 2 is put into Quadratic Finite Element detection machine, on the light guide plate mold insert
Broached-tooth design is detected, if its precision meets the requirements, is completed the process, and light guide plate sawtooth mold insert 2 is obtained；If its precision is not inconsistent
It closes and requires, then repeatedly step (36) (37) is corrected, until the precision of broached-tooth design meets the requirements.So far sawtooth mold insert sawtooth
Face 21 completes the process, and obtains high-precision light guide plate sawtooth mold insert 2.
A kind of processing method of light guide plate sawtooth mold insert 2 of the invention, when processing broached-tooth design using spark machine 3, nothing is cut
The defects of cutting power generation, therefore burr and mark groove will not be generated on light guide plate sawtooth mold insert 2；In addition, the processing method efficiency
Height, precision are high and at low cost.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes
Technical solution consisting of any combination of the above technical features.It should be pointed out that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (11)
1. a kind of processing method of light guide plate sawtooth mold insert characterized by comprising
Step S1: according to the zigzag fashion of design, the processing drawing of copper public affairs serrated face is drawn；
Step S2: in copper, Gongshang processes broached-tooth design；
Step S3: using the copper public affairs processed as the tool-electrode of spark machine, broached-tooth design is processed on light guide plate mold insert.
2. the processing method of light guide plate sawtooth mold insert according to claim 1, which is characterized in that the step S3 is specifically wrapped
Include following steps:
S31: installation correction is carried out to light guide plate mold insert；
S32: installation correction is carried out to copper public affairs；
S33: the relative position between the face to be processed and copper public affairs serrated face of adjustment light guide plate mold insert；
S34: erosion tooth is carried out to light guide plate mold insert；
S35: light guide plate mold insert is cleaned；
S36: detection correction is carried out to the broached-tooth design on light guide plate mold insert, if its precision meets the requirements, completes the process, obtains
Light guide plate sawtooth mold insert；If its precision is undesirable, repeatedly step S34 and S35, until obtaining meeting leading for required precision
Tabula rasa sawtooth mold insert.
3. the processing method of light guide plate sawtooth mold insert according to claim 2, which is characterized in that step S32 includes adjustment
The position of copper public affairs serrated face, so that the face to be processed of the serrated face and light guide plate mold insert is mutually perpendicular to.
4. the processing method of light guide plate sawtooth mold insert according to claim 2, which is characterized in that light guide plate in step S33
There are spark positions in the horizontal direction with copper public affairs serrated face in the face to be processed of mold insert.
5. the processing method of light guide plate sawtooth mold insert according to claim 2, which is characterized in that the erosion tooth mistake of step S34
Also spray has working solution in journey.
6. the processing method of light guide plate sawtooth mold insert according to claim 5, which is characterized in that the working solution is spark
Any one in machine oil, kerosene, deionized water or emulsion.
7. the processing method of light guide plate sawtooth mold insert according to claim 2, which is characterized in that using clear in step S35
Lotion cleans light guide plate sawtooth mold insert.
8. the processing method of light guide plate sawtooth mold insert according to claim 7, which is characterized in that the cleaning agent is decontamination
Any one in agent or natural water.
9. the processing method of light guide plate sawtooth mold insert according to claim 1, which is characterized in that the material of the copper public affairs is
Any one in red copper, graphite, brass, steel, copper-tungsten or molybdenum.
10. the processing method of light guide plate sawtooth mold insert according to claim 1, which is characterized in that using slow in step S2
Wire mode processes broached-tooth design in copper Gongshang.
11. the processing method of light guide plate sawtooth mold insert according to claim 10, which is characterized in that the copper public affairs serrated face
On SaW pitch l and tooth depth h be SaW pitch l and tooth depth h on the light guide plate sawtooth mold insert serrated face twice.
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| CN201910637950.8A CN110253230A (en) | 2019-07-16 | 2019-07-16 | A kind of processing method of light guide plate sawtooth mold insert |
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| CN201910637950.8A CN110253230A (en) | 2019-07-16 | 2019-07-16 | A kind of processing method of light guide plate sawtooth mold insert |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111036813A (en) * | 2019-12-12 | 2020-04-21 | 江苏亚星锚链股份有限公司 | Forging method of high-strength underwater cutting ring |
| CN111347224A (en) * | 2019-12-30 | 2020-06-30 | 广州导新模具注塑有限公司 | Machining method of precise pattern insert and precise pattern insert |
| CN111790957A (en) * | 2020-06-17 | 2020-10-20 | 深圳市隆利科技股份有限公司 | Sawtooth process for solving side yellowing of backlight LED |
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| Publication number | Priority date | Publication date | Assignee | Title |
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