CN103240452A - Polytetrafluoroethylene (PTFE) plate milling and cutting method - Google Patents
Polytetrafluoroethylene (PTFE) plate milling and cutting method Download PDFInfo
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- CN103240452A CN103240452A CN2013101914528A CN201310191452A CN103240452A CN 103240452 A CN103240452 A CN 103240452A CN 2013101914528 A CN2013101914528 A CN 2013101914528A CN 201310191452 A CN201310191452 A CN 201310191452A CN 103240452 A CN103240452 A CN 103240452A
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- ptfe
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- brown paper
- upper cover
- table top
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Abstract
The invention provides a polytetrafluoroethylene (PTFE) plate milling and cutting method. Table-board positioning holes are drilled in a table board; pins are arranged in the table-board positioning holes; positioning holes corresponding to the table-board positioning holes drilled in the table board are pre-formed in a lower base plate, one piece or pieces of first craft paper, a PTFE material, one piece or pieces of second craft paper and an upper cover plate; then the lower base plate, the first craft paper, the PTFE material, the second craft paper and the upper cover plate, which are provided with the positioning holes, are sequentially laminated on the table board to form laminated plates in a manner that the pins penetrate through the positioning holes; the laminated plates are fixed on the table board through a rubber band; a printed plate is milled and cut, so that the PTFE material can be milled and cut; and plate taking operation is executed, the second craft paper and the upper cover plate on the PTFE material can be removed, and the milled and cut PTFE material can be taken down.
Description
Technical field
The present invention relates to printed circuit board and make the field, more particularly, the present invention relates to the PTFE sheet material milling method of edges of boards burr after the milling of a kind of PTFE of avoiding material.
Background technology
Polytetrafluoroethylene (PTFE) is a kind of thermoplastic polymer material with low-k and low loss factors, is one of important base material of high-frequency microwave printed board.
The application of PTFE material is more and more.At present, the PTFE material is widely used in fields such as radio frequency, microwave, antenna.Appearance and size, exterior quality are required than higher design, at the PTFE material, in order to realize keeping with designing identical profile and removing design configuration part in addition, a kind of method that can adopt is mechanical milling mode, and the method that another kind can adopt is impact style.
At present, for the PTFE material, adopt the mode of mechanical milling to make more, and use cutting force preferably the twolip milling cutter carry out milling and make.The lamination mode is directly to put the PTFE material on lower bolster, increase upper cover plate at the PTFE material again, to guarantee that the plate face can not be scratched the effect of pushing down the PTFE material of yet having played simultaneously, but the effect of so doing is also not obvious, still can not avoid edges of boards cloak phenomenon (cloak: the waste material of the thread or sheet that produces in a kind of mechanical processing process fully for the softer PTFE material of material, be bonded at workpiece, surface of semi-finished, need use external force to remove) generation.
Specifically, in the PTFE of prior art sheet material milling method, lower bolster and upper cover plate are all harder, limit, PTFE material milling path has figure, circuit that upper cover plate and lower bolster are supported, cause upper cover plate and lower bolster can not effectively clamp the PTFE surface, thereby it is produce the space in the milling path, and then unsettled when causing milling.Thus, mill machine in cutting PTFE sheet material process, sheet edge produces cloak, influences apparent quality.
Summary of the invention
Technical problem to be solved by this invention is at machine influences apparent quality owing to sheet edge generation cloak in cutting PTFE sheet material process the technological deficiency of milling that exists in the prior art, a kind of employing brown paper positive and negative parcel PTFE sheet material is provided, fully contact with upper padding plate and lower bolster, make it not have unsettled milling, thereby reach the PTFE sheet material milling method of good milling effect, produce the phenomenon of edges of boards cloak when avoiding the milling of PTFE material thus.
According to the present invention, a kind of PTFE sheet material milling method is provided, it comprises:
First step: carry out the pin positioning action, wherein get out the table top locating hole at table top, and the pin of in the table top locating hole, packing into;
Second step: carry out the lamination operation, wherein be pre-formed the table top locating hole corresponding positioning hole that gets out with table top in lower bolster, one or more the first brown paper, PTFE material, one or more the second brown paper and upper cover plate, lower bolster, one or more the first brown paper, PTFE material, one or more the second brown paper and the upper cover plate that will be formed with locating hole subsequently stack gradually on table top to form lamination in the mode that pin passes locating hole;
Third step: carry out the fixing operation of taping, wherein use adhesive tape that the lamination that forms in second step is fixed on the table top;
The 4th step: carry out printed board milling operation, to realize the milling to the PTFE material;
The 5th step: carry out and to get the plate operation, wherein remove one or more the second brown paper and the upper cover plates that are pressed on the PTFE material, and the PTFE material after milling is shaped takes off.
Preferably, the diameter of pin is littler than the diameter of the locating hole on the PTFE plate of material.
Preferably, the diameter of pin is than the little 0.05mm of diameter of the locating hole on the PTFE plate of material.
Preferably, the material of lower bolster is phenolic aldehyde.
Preferably, the material of upper cover plate is phenolic aldehyde.
Preferably, first brown paper and second brown paper have same material and size.
Preferably, the PTFE material is the PTFE semi-finished product.
Produce the phenomenon of edges of boards cloak when excellent PTFE sheet material milling method is for fear of the milling of PTFE material according to the present invention and taked a kind of special milling lamination mode, wherein the brown paper of milling is assisted in the increase up and down of PTFE, brown paper increase lower bolster and upper cover plate up and down more respectively, above-mentioned lamination mode can allow the pressure foot hairbrush that mills machine drop on the upper cover plate, PTFE material upper epidermis and following top layer are all fully pushed down, and have avoided milling decompression or local unsettled.
After carrying out lamination according to the lamination mode of PTFE sheet material milling method according to the present invention, more smooth through the edges of boards of the PTFE material of milling, avoided existing in the prior art avoid the milling of PTFE material the time produce the phenomenon of edges of boards cloak.
Lower bolster and upper cover plate preferably adopt phenolic aldehyde as material, can realize best filling and buffering effect thus.
Description of drawings
By reference to the accompanying drawings, and by with reference to following detailed, will more easily more complete understanding be arranged and more easily understand its attendant advantages and feature the present invention, wherein:
Fig. 1 schematically shows the flow chart of PTFE sheet material milling method according to the preferred embodiment of the invention.
Fig. 2 schematically shows the schematic diagram of PTFE sheet material milling method according to the preferred embodiment of the invention.
Need to prove that accompanying drawing is used for explanation the present invention, and unrestricted the present invention.Notice that the accompanying drawing of expression structure may not be to draw in proportion.And in the accompanying drawing, identical or similar elements indicates identical or similar label.
The specific embodiment
In order to make content of the present invention clear and understandable more, below in conjunction with specific embodiments and the drawings content of the present invention is described in detail.
Fig. 1 schematically shows the flow chart of PTFE sheet material milling method according to the preferred embodiment of the invention.Fig. 2 schematically shows the schematic diagram of PTFE sheet material milling method according to the preferred embodiment of the invention.
Specifically, as shown in Figure 1, PTFE sheet material milling method comprises according to the preferred embodiment of the invention:
First step S1: carry out the pin positioning action, wherein get out table top locating hole (not shown) at the table top (not shown), and the pin 10 of in the table top locating hole, packing into;
Preferably, the diameter of pin 10 is littler than the diameter of the locating hole on the PTFE plate of material (back will be described);
And preferably, the diameter of pin 10 is than the little 0.05mm of diameter of the locating hole on the PTFE plate of material, and namely can realize good location this moment, and handled easily.
The second step S2: carry out the lamination operation, wherein at lower bolster 20, one or more the first brown paper 30, PTFE material 40, be pre-formed in one or more the second brown paper 50 and the upper cover plate 60 with table top on the table top locating hole corresponding positioning hole that gets out (in other words, with pin 10 position corresponding positioning hole), will be formed with the lower bolster 20 of locating hole subsequently, one or more the first brown paper 30, PTFE material 40, one or more the second brown paper 50 and upper cover plate 60 stack gradually on table top to form lamination in the mode that pin 10 passes locating hole.
Preferably, preformed locating hole is identical in lower bolster 20, one or more the first brown paper 30, PTFE material 40, one or more the second brown paper 50 and the upper cover plate 60, the diameter that namely has the position of complete correspondence and equate fully.
Specifically, in the specific embodiment, for example, in the second step S2, can load onto lower bolster 20 at pin 10, preferably lower bolster 20 is phenolic aldehyde backing plate (that is, the material of lower bolster 20 is phenolic aldehyde), the effect of filling up two first brown paper, 30, the first brown paper 30 again is the spaces that can fill 20 of PTFE lower surface material, circuit difference of height and lower bolsters.Here, as mentioned above, needing on first brown paper 30 has same locating hole on the pre-drilled same PTFE material.With above-mentioned pin 10 location, fold again and for example go up PTFE material 40(, PTFE material 40 is PTFE semi-finished product).Compress two second brown paper 50 above the PTFE material 40, its effect is the space of filling between PTFE top surface, circuit difference of height and the upper cover plate; Similarly, second brown paper 50 need have pre-drilled locating hole; The surface of the second last brown paper 50 for example increases a upper cover plate 60(, upper cover plate 60 is phenolic aldehyde upper cover plates, the material that is upper cover plate 60 is phenolic aldehyde), the effect of upper cover plate 60 is the main shaft pressure foot is pressed onto increases contact area on the cover plate pressure, can not cause local decompression, and unsettled when avoiding milling, clearance issues, as shown in Figure 2.
Preferably, first brown paper and second brown paper are brown paper of the same race, namely have same material and size.
Third step S3: carry out the fixing operation of taping, wherein use adhesive tape that the lamination that forms among the second step S2 is fixed on the table top.
Specifically, for example, in the specific embodiment, can use around adhesive tape touch, with brown paper, PTFE material 40, cover plate is fixed on the table top up and down, avoid milling when machine is pressed angle hairbrush transverse movement dragging, mainly be to play booster action.
The 4th step S4: carry out printed board milling operation, to realize the milling to PTFE material 40.
Specifically, for example, in the 4th step S4, along pre-designed milling path milling, milling cutter generally uses double-point tool to make, and the special tectonic of twolip milling cutter can promote cutting quality, particularly be directed to soft partially material, the edge smoother after the milling.
The 5th step S5: carry out and to get the plate operation, wherein remove one or more the second brown paper 50 and the upper cover plates 60 that are pressed on the PTFE material 40, and the PTFE material 40 after milling is shaped takes off.
Specifically, for example, in the 5th step S5, can remove the phenolic aldehyde cover plate, the brown paper that are pressed on the PTFE material 40, the PTFE material 40 after again milling being shaped takes off.
Thus, produce the phenomenon of edges of boards cloak when PTFE sheet material milling method is for fear of the milling of PTFE material according to the preferred embodiment of the invention and taked a kind of special milling lamination mode, wherein the brown paper of milling is assisted in the increase up and down of PTFE, brown paper increase lower bolster and upper cover plate up and down more respectively, above-mentioned lamination mode can allow the pressure foot hairbrush that mills machine drop on the upper cover plate, PTFE material upper epidermis and following top layer are all fully pushed down, and have avoided milling decompression or local unsettled.
According to after the lamination mode of PTFE sheet material milling method is carried out lamination according to the preferred embodiment of the invention, more smooth through the edges of boards of the PTFE material of milling, avoided existing in the prior art avoid the milling of PTFE material the time produce the phenomenon of edges of boards cloak.
Lower bolster and upper cover plate preferably adopt phenolic aldehyde as material, can realize best filling and buffering effect thus.
In addition, need to prove, unless otherwise indicated, otherwise the term in the specification " first ", " second ", " the 3rd " etc. describe each assembly of only being used for distinguishing specification, element, step etc., rather than are used for logical relation between each assembly of expression, element, the step or ordinal relation etc.
Be understandable that though the present invention with the preferred embodiment disclosure as above, yet above-described embodiment is not in order to limit the present invention.For any those of ordinary skill in the art, do not breaking away under the technical solution of the present invention scope situation, all can utilize the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention according to any simple modification, equivalent variations and the modification that technical spirit of the present invention is done above embodiment, all still belongs in the scope of technical solution of the present invention protection.
Claims (7)
1. PTFE sheet material milling method is characterized in that comprising:
First step: carry out the pin positioning action, wherein get out the table top locating hole at table top, and the pin of in the table top locating hole, packing into;
Second step: carry out the lamination operation, wherein be pre-formed the table top locating hole corresponding positioning hole that gets out with table top in lower bolster, one or more the first brown paper, PTFE material, one or more the second brown paper and upper cover plate, lower bolster, one or more the first brown paper, PTFE material, one or more the second brown paper and the upper cover plate that will be formed with locating hole subsequently stack gradually on table top to form lamination in the mode that pin passes locating hole;
Third step: carry out the fixing operation of taping, wherein use adhesive tape that the lamination that forms in second step is fixed on the table top;
The 4th step: carry out printed board milling operation, to realize the milling to the PTFE material;
The 5th step: carry out and to get the plate operation, wherein remove one or more the second brown paper and the upper cover plates that are pressed on the PTFE material, and the PTFE material after milling is shaped takes off.
2. PTFE sheet material milling method according to claim 1 is characterized in that the diameter of pin is littler than the diameter of the locating hole on the PTFE plate of material.
3. PTFE sheet material milling method according to claim 1 and 2 is characterized in that, the diameter of pin is than the little 0.05mm of diameter of the locating hole on the PTFE plate of material.
4. PTFE sheet material milling method according to claim 1 and 2 is characterized in that the material of lower bolster is phenolic aldehyde.
5. PTFE sheet material milling method according to claim 1 and 2 is characterized in that the material of upper cover plate is phenolic aldehyde.
6. PTFE sheet material milling method according to claim 1 and 2 is characterized in that first brown paper and second brown paper have same material and size.
7. PTFE sheet material milling method according to claim 1 and 2 is characterized in that the PTFE material is the PTFE semi-finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191452.8A CN103240452B (en) | 2013-05-21 | 2013-05-21 | A kind of PTFE sheet material milling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310191452.8A CN103240452B (en) | 2013-05-21 | 2013-05-21 | A kind of PTFE sheet material milling method |
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| CN103240452A true CN103240452A (en) | 2013-08-14 |
| CN103240452B CN103240452B (en) | 2015-10-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670555A (en) * | 2015-11-11 | 2017-05-17 | 上海嘉捷通电路科技股份有限公司 | Method for processing outline of PCB made of PTFE material |
| CN109922603A (en) * | 2019-04-18 | 2019-06-21 | 生益电子股份有限公司 | A kind of boring method of PCB |
| CN113613396A (en) * | 2021-08-23 | 2021-11-05 | 中国电子科技集团公司第十五研究所 | Printed board appearance processing method |
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| KR100628476B1 (en) * | 2005-08-09 | 2006-09-26 | 주식회사 큐엔텍 코리아 | The method for producing the pcb and the pcb |
| US20070193680A1 (en) * | 2004-02-05 | 2007-08-23 | Matsushita Electric Works, Ltd. | Backup board for machining process |
| CN201491399U (en) * | 2009-09-16 | 2010-05-26 | 深圳市深联电路有限公司 | Bottom backing board of printed circuit board (PCB) |
| CN101795536A (en) * | 2010-02-09 | 2010-08-04 | 深南电路有限公司 | Method and device for processing PCB ( Printed Circuit Board) made of PTFE ( Polytetrafluoroethylene) material |
| CN201744718U (en) * | 2010-06-22 | 2011-02-16 | 福建闽威电路板实业有限公司 | Edge milling processing device for strip product of precision printed circuit board |
| CN102781173A (en) * | 2012-07-24 | 2012-11-14 | 景旺电子（深圳）有限公司 | Method for machining and molding printed circuit board (PCB) made of polytetrafluoroethylene (PTFE) material |
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Patent Citations (6)
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| US20070193680A1 (en) * | 2004-02-05 | 2007-08-23 | Matsushita Electric Works, Ltd. | Backup board for machining process |
| KR100628476B1 (en) * | 2005-08-09 | 2006-09-26 | 주식회사 큐엔텍 코리아 | The method for producing the pcb and the pcb |
| CN201491399U (en) * | 2009-09-16 | 2010-05-26 | 深圳市深联电路有限公司 | Bottom backing board of printed circuit board (PCB) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670555A (en) * | 2015-11-11 | 2017-05-17 | 上海嘉捷通电路科技股份有限公司 | Method for processing outline of PCB made of PTFE material |
| CN109922603A (en) * | 2019-04-18 | 2019-06-21 | 生益电子股份有限公司 | A kind of boring method of PCB |
| CN113613396A (en) * | 2021-08-23 | 2021-11-05 | 中国电子科技集团公司第十五研究所 | Printed board appearance processing method |
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| CN103240452B (en) | 2015-10-07 |
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