CN106604568A - Processing method of high-precision printed connector PCB - Google Patents
Processing method of high-precision printed connector PCB Download PDFInfo
- Publication number
- CN106604568A CN106604568A CN201611217434.2A CN201611217434A CN106604568A CN 106604568 A CN106604568 A CN 106604568A CN 201611217434 A CN201611217434 A CN 201611217434A CN 106604568 A CN106604568 A CN 106604568A
- Authority
- CN
- China
- Prior art keywords
- processing method
- printed
- circuit connector
- profile
- drill flute
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/403—Edge contacts; Windows or holes in the substrate having plural connections on the walls thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/0214—Back-up or entry material, e.g. for mechanical drilling
Abstract
The invention discloses a processing method of a high-precision printed connector PCB, wherein the processing method comprises performing a drill slot forming step on key areas at two sides of the printed connector, wherein a 1.0 mm stiffened slotting cutter in the drill slot forming step, the holes are intersected, and one hole is drilled every 0.15mm for forming a smooth profile area. A photosensitive dry film for pattern transfer is a Hitachi H-640 thick metal dry film with relatively high hole sealing performance and relatively high electroplating resistance, and in production, a pressure is applied on the product line for keeping a washing pressure to 1kg/cm<2>. The processing method of the high-precision printed connector PCB has advantages of high processing precision, high product reliability, high process capability and low cost.
Description
Technical field
The present invention relates to printed circuit board (PCB) processing technique field, specially a kind of processing side of high accuracy printed-circuit connector PCB
Method.
Background technology
Printed-circuit connector product（Also referred to as golden finger product）, partial graphical is this kind of to outline edge tolerance ± 0.1mm
Product one end is designed for finger plug, and using hard technology for gold is plated, PCB needs the requirement that resistance to multiple plug is used, industry domestic demand
The larger representative productss of the amount of asking are designed for optic module PCB, are illustrated as representative with such product below.
Optical module (optical module) is made up of, opto-electronic device opto-electronic device, functional circuit and optical interface etc.
Including launching and receiving two parts, for the carrier transmitted between switch and equipment, compare transceiver and have more efficiency, safety
Property.
Briefly, the effect of optical module is exactly opto-electronic conversion, and transmitting terminal converts electrical signals into optical signal, by optical fiber
After transmission, receiving terminal is converted into the signal of telecommunication optical signal again.
In order to meet request signal transmission, the printed circuit board edge connector plug size general control 9.2 of optical module ±
0.1mm, the dimensional tolerance of figure to profile needs control in ± 0.1mm standards, actual PCB processing is drilled, figure is shifted,
Profile equipment precision affects, and general dimensional tolerance can only achieve the standard of ± 0.15mm, and socket can go out after repeatedly plug
Now abrasion becomes big situation, PCB printed-circuit connectors match with socket it is bad offset excessive, golden finger contact with plug can be caused
Skew is formed between piece, short circuit is caused, causes communication equipment to burn.
The content of the invention
It is an object of the invention to provide a kind of processing method of high accuracy printed-circuit connector PCB, with machining accuracy height, product
The characteristics of good reliability, process capability are strong and with low cost.
The present invention can be achieved through the following technical solutions：
The invention discloses a kind of processing method of high accuracy printed-circuit connector PCB, printed-circuit connector both sides connect with SFP connector plugs
The key area of contact bores drill flute molding procedure using one, bores in drill flute molding procedure described one, and drill flute uses 1.0mm's
Stiffened groove knife, Kong Yukong intersects, and a hole is bored every 0.15mm, to form smooth profile area；It is photosensitive that figure transfer is used
Dry film is added using the thick gold dry films of the preferable Hitachi H-640 of sealing of hole and anti-plate ability, the developing line after the transfer of dry film exposure figure
Man-hour pressurization washing pressure is 1kg/c ㎡.
In routine use, module is inserted board by terminal unit, needs, through being oriented to fixation, to print when optical module is inserted
Circuit board golden finger is connected again with plug, when printed circuit board edge connector plug position offsets excessive, or long-term pluggable module
The plug that weares and teares afterwards causes plug to loosen, and easily causes short circuit.So the printed circuit board edge connector plug size of optical module is general
Need 9.2 ± 0.1mm of control, figure to side dimensional tolerance ± 0.1mm, generally 0.5 ± 0.1mm, 0.9 ± 0.1mm.
The influence factor of skew：Drilling, figure transfer, profile positional precision deviation and sheet material harmomegathus affect, each operation
Deviation 0.05mm, maximum deviation 0.15mm or more after superposition.
In the present invention, key area profile is changed by the moulding process of CNC gongs before conventional finished product at PCB printed-circuit connectors
It is to be processed by the way of a brill drill flute hole forming, drill flute is carried out to product key area using high-precision bore process and is formed
Even surface replace traditional profile technique, eliminate the deviation of critical process CNC gong plate precision.
One drill flute hole technique industry is typically employed in the processing of short and small metallization slotted eye, without copper hole drill groove technique using normal
Dry film sealing of hole bad phenomenon, general 4mm or so easily occurs in rule electroplating technology, and sealing of hole easily occur bad, causes electroplating liquid medicine
Infiltration causes slotted eye side to have upper copper problem, and the efficiency of drill flute is low, it is impossible to overall to replace conventional form technique, present invention knot
The characteristics of closing printed-circuit connector, employs the thick gold dry films of the sealing of hole Hitachi H-640 good with anti-plate ability, adds horizontal line during production
Pressure washing pressure can meet 6mm sealing of hole abilities by 1kg/c ㎡ are adjusted to through test（Golden finger length is 4.0mm）, meet
Dimensional requirement.The present invention is by technique improvement and fool proof technique, it is ensured that printed-circuit connector key area dimensional tolerance is in ± 0.1mm
Within, prevent short circuit problem from producing.
In process, the non-pass in addition to the key area that printed-circuit connector both sides are connected contact with SFP connector plugs
Key range is using conventional CNC gong profile operations.Other positions non-critical areas are connected using conventional form technique, tolerance
The requirement of optical module plug position key area tolerance+0.1mm high accuracy figure and shape deviation can be met, while also dropping
The low processing and manufacturing cost of product.
Further, the described one front operation for boring drill flute molding procedure include CAM makings, sawing sheet, internal figure shift, it is interior
Portion's acid etching, brown and pressing.
Further, the rear operation of the CNC gongs profile operation includes test and product inspection.
Further, the intermediate step of a brill drill flute molding procedure and CNC gong profile operations is once plated including PTH
Copper, outer graphics transfer, outer graphics plating, outer layer alkali etching, welding resistance, surface treatment and character printing.
A kind of processing method of high accuracy printed-circuit connector PCB of the present invention, with following beneficial effect：
Firstth, machining accuracy is high, and golden finger profile is bored drill flute technique and substitutes CNC gong sharp processings using one, can eliminate profile
Size affects caused by cutter wear, PCB deformations, profile equipment precision deviation, improves the machining accuracy of product；
Secondth, product reliability is good, at PCB printed-circuit connectors key area profile by CNC gongs before conventional finished product moulding process
It is changed to be processed by the way of a brill drill flute hole forming, drill flute is carried out to product key area using high-precision bore process
The even surface of formation replaces traditional profile technique, eliminates the deviation of critical process CNC gong plate precision, it is to avoid golden finger was being plugged
Position is offset for the impact of product reliability in journey, effectively increases the reliability of product；
3rd, product sequence ability is strong, and CNC profiles technique is contrasted with drill flute profile technique normal distribution with CPK values：Drill flute work
Skill data stabilization, CPK>1.33；
4th, with low cost, whole processing method is improved just for its key procedure, improves process operations simply,
Other operations are not changed in having stronger versatility, effectively reduce the processing and manufacturing cost of product.
Specific embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to embodiment and to this
Invention product is described in further detail.
The invention discloses a kind of processing method of high accuracy printed-circuit connector PCB, printed-circuit connector both sides are inserted with SFP adapters
The key area of head connection contact bores drill flute molding procedure using one, bores in drill flute molding procedure described one, and drill flute is used
The stiffened groove knife of 1.0mm, Kong Yukong intersects, and a hole is bored every 0.15mm, to form smooth profile area；Figure transfer is used
Photosensitive dry film using the thick gold dry films of the preferable Hitachi H-640 of sealing of hole and anti-plate ability, it is aobvious after the transfer of dry film exposure figure
Hachure adds man-hour pressure (hydraulic) water to wash pressure for 1kg/c ㎡.
Further, in process, except printed-circuit connector both sides are connected the key area of contact with SFP connector plugs
Outer non-critical areas are using conventional CNC gong profile operations.
Further, the described one front operation for boring drill flute molding procedure include CAM makings, sawing sheet, internal figure shift, it is interior
Portion's acid etching, brown and pressing.
Further, the rear operation of the CNC gongs profile operation includes test and product inspection.
Further, the intermediate step of a brill drill flute molding procedure and CNC gong profile operations is once plated including PTH
Copper, outer graphics transfer, outer graphics plating, outer layer alkali etching, welding resistance, surface treatment and character printing.
In order to assess processing method of the present invention operation prospect in actual applications, operation of the present invention is carried out respectively
Process capability is tested.Find in test：In the CPK=1.07 of 9.2 ± 0.1mm positions CNC profile operations, one bores drill flute molding work
The CPK=3.66 of sequence；In the CPK=0.78 of 0.51 ± 0.1mm positions CNC profile operations, one bores the CPK=of drill flute molding procedure
1.57；CNC profiles operation bores the normal distribution of drill flute molding procedure with one and CPK values are contrasted：Process data is stablized, CPK>
1.33, with stronger process capability, effectively reduce product fraction defective.
The above, only presently preferred embodiments of the present invention not makees any pro forma restriction to the present invention；It is all
The those of ordinary skill of the industry can shown in by specification and the above and swimmingly implement the present invention；But, it is all to be familiar with
Professional and technical personnel makes in the range of without departing from technical solution of the present invention using disclosed above technology contents
A little change, modification with develop equivalent variations, be the present invention Equivalent embodiments；Meanwhile, all realities according to the present invention
Change, modification and differentiation of any equivalent variations that matter technology is made to above example etc., still fall within the technology of the present invention
Within the protection domain of scheme.
Claims (5)
1. a kind of processing method of high accuracy printed-circuit connector PCB, it is characterised in that：Printed-circuit connector both sides and SFP connector plugs
The key area of connection contact bores drill flute molding procedure using one, bores in drill flute molding procedure described one, and drill flute uses 1.0mm
Stiffened groove knife, Kong Yukong intersect, every 0.15mm bore a hole, to form smooth profile area；The sense that figure transfer is used
Light dry film is using the thick gold dry films of the preferable Hitachi H-640 of sealing of hole and anti-plate ability, the developing line after the transfer of dry film exposure figure
Plus man-hour pressure (hydraulic) water washes pressure for 1kg/c ㎡.
2. the processing method of high accuracy printed-circuit connector PCB according to claim 1, it is characterised in that：In process,
Non-critical areas in addition to the key area that printed-circuit connector both sides are connected contact with SFP connector plugs are using conventional CNC gongs
Profile operation.
3. the processing method of high accuracy printed-circuit connector PCB according to claim 2, it is characterised in that：Described one bores drill flute
The front operation of molding procedure includes CAM making, sawing sheet, internal figure transfer, internal acid etching, brown and pressing.
4. the processing method of high accuracy printed-circuit connector PCB according to claim 3, it is characterised in that：The CNC gongs profile work
The rear operation of sequence includes test and product inspection.
5. the processing method of high accuracy printed-circuit connector PCB according to claim 4, it is characterised in that：It is described one bore drill flute into
The intermediate step of type operation and CNC gong profile operations includes copper facing of PTH, outer graphics transfer, outer graphics plating, outer layer
Alkali etching, welding resistance, surface treatment and character printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611217434.2A CN106604568A (en) | 2016-12-26 | 2016-12-26 | Processing method of high-precision printed connector PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611217434.2A CN106604568A (en) | 2016-12-26 | 2016-12-26 | Processing method of high-precision printed connector PCB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106604568A true CN106604568A (en) | 2017-04-26 |
Family
ID=58604109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611217434.2A Pending CN106604568A (en) | 2016-12-26 | 2016-12-26 | Processing method of high-precision printed connector PCB |
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| Country | Link |
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| CN (1) | CN106604568A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113015325A (en) * | 2021-01-09 | 2021-06-22 | 勤基电路板（深圳）有限公司 | PCB and electric potential side metallization process thereof |
| CN113347796A (en) * | 2021-05-07 | 2021-09-03 | 广州广合科技股份有限公司 | Processing method for improving alignment precision of U-shaped clamping groove of PCB |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170995A (en) * | 2013-04-18 | 2013-06-26 | 梅州市志浩电子科技有限公司 | Manufacture method of short slotted hole for printed circuit board |
| CN104470257A (en) * | 2014-12-12 | 2015-03-25 | 东莞市康庄电路有限公司 | Machining method for improving pluggable position precision of PCB golden fingers |
| CN105472910A (en) * | 2014-09-12 | 2016-04-06 | 深南电路有限公司 | Method for controlling processing precision of circuit board |
-
2016
- 2016-12-26 CN CN201611217434.2A patent/CN106604568A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170995A (en) * | 2013-04-18 | 2013-06-26 | 梅州市志浩电子科技有限公司 | Manufacture method of short slotted hole for printed circuit board |
| CN105472910A (en) * | 2014-09-12 | 2016-04-06 | 深南电路有限公司 | Method for controlling processing precision of circuit board |
| CN104470257A (en) * | 2014-12-12 | 2015-03-25 | 东莞市康庄电路有限公司 | Machining method for improving pluggable position precision of PCB golden fingers |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113015325A (en) * | 2021-01-09 | 2021-06-22 | 勤基电路板（深圳）有限公司 | PCB and electric potential side metallization process thereof |
| CN113015325B (en) * | 2021-01-09 | 2022-09-20 | 勤基电路板（深圳）有限公司 | PCB and electric potential side metallization process thereof |
| CN113347796A (en) * | 2021-05-07 | 2021-09-03 | 广州广合科技股份有限公司 | Processing method for improving alignment precision of U-shaped clamping groove of PCB |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170426 |
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| RJ01 | Rejection of invention patent application after publication |