CN109729646A - A method of improving PCB drilling quality - Google Patents
A method of improving PCB drilling quality Download PDFInfo
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- CN109729646A CN109729646A CN201811392939.1A CN201811392939A CN109729646A CN 109729646 A CN109729646 A CN 109729646A CN 201811392939 A CN201811392939 A CN 201811392939A CN 109729646 A CN109729646 A CN 109729646A
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- power
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Abstract
The present invention provides a kind of method for improving PCB drilling quality, which comprises the following steps: S1. unloads power hole by certain diameter subdrilling, then bores macropore/slot；S2. the quantity for unloading power hole is 2-6, guarantees stress balance when boring under macropore；S3. the setting of power pitch of holes will be unloaded in the reasonable scope；S4. according to boring macropore/slot and unloading the parameter in power hole, the diameter for unloading power hole is obtained by calculation formula, improves drilling quality.Processing method through the invention can prevent to do over again, save the cost, improve product quality yield, promote plan delivery rate.
Description
Technical field
The invention belongs to PCB processing technique fields, and in particular to a method of improve PCB drilling quality.
Background technique
PCB industry market dog-eat-dog, wiring board design micromation develop to more high product level, in production process meeting
Various problems are encountered, engineering technology is the basis of enterprise, and pragmatic master data, simulated production, the excellent of Product Process design can
It is scrapped with effective reduction.In PCB process, drilling is very crucial process, directly decides that the structure of product and performance are high
Low, the stabilization of drilling maintains the stabilization of production, ensures enterprise development foundation, and shape design in plank hole can be wanted with high-end product
It asks variation, plug-in unit flexible and changeable, more irregularly-shaped holes, intersection hole, big shape hole, big shape slot occurs.In face of numerous and complicated mixed and disorderly economy
Situation, fast changing market, PCB enterprise, which has only, adheres to industry, becomes new different, is won victory with product, could Win Clients trust
And approval, improve high-end product competitiveness.This research generates shape distortion in process of production, drapes over one's shoulders for macropore/slot of drilling
The quality problems such as cutting edge of a knife or a sword, burr, drilling machine torque requiremnt, it is complete to macropore/method of slot production improvement and the optimum design method of drilling
Accomplish that macropore/slot production is without exception entirely, also drilling machine performance is protected, reduce rework rate, increase customer satisfaction degree, guarantees that our company is bored
Hole quality requirements greatly improve the our company market competitiveness.
Summary of the invention
In view of this, the present invention provides a kind of method for improving PCB drilling quality, processing method through the invention can
Prevent to do over again, save the cost improves product quality yield, promotes plan delivery rate.
The technical solution of the present invention is as follows: a kind of method for improving PCB drilling quality, which comprises the following steps:
S1. power hole is unloaded by certain diameter subdrilling, then bores macropore/slot；
S2. the quantity for unloading power hole is 2-6, guarantees stress balance when boring under macropore；
S3. the setting of power pitch of holes will be unloaded in the reasonable scope；
S4. according to boring macropore/slot and unloading the parameter in power hole, the diameter for unloading power hole is obtained by calculation formula, improves drilling quality.
Further, for the short slot of length-width ratio k < 2 after compensation, the case where using drill cutter diameter >=3.5mm, 3-5 is bored
A power of unloading hole.
Further, for slot length-width ratio 1.1-1.5, groove width radius R 1.75mm the case where, bores four and unloads power hole, institute
Stating and unloading power pitch of holes M is 0.12-0.16mm, and the power of the unloading hole includes symmetrically arranged first unloading power hole, second unloading power hole, described
First unloads the diameter 1.675mm that the diameter in power hole unloads power hole for 1.603mm, second, then the calculated value for unloading power bore dia 2r
Choose 1.603mm.
Further, the diameter in the power of the unloading hole is 1.6mm.
Further, for need to drill be circular hole, after compensation length-width ratio k >=2 slot, using drill cutter diameter >=
The case where 3.5mm, bores 2-6 and unloads power hole.
Further, for diameter/groove width 4.0, slot length-width ratio 0.8-1.2, groove width radius R 2.0mm, four are bored
Power hole is unloaded, the power of the unloading pitch of holes M is 0.12-0.16mm, unloads power bore dia 2r calculated value 1.569.
Further, the diameter in the power of the unloading hole is 1.35 mm.
Further, the calculation formula are as follows:
Unloading power bore dia=(diameter macropores/slot diameter -0.424)/2.414(can the adjustment in the ± 0.3mm), unload power hole edge and big
Hole edge is tangent and guarantees to unload power pitch of holes >=0.15mm.
It is found by a large amount of production practices, in PCB aperture, socket design, it may appear that macropore/slot of some larger apertures
After >=3.15mm is directed to such borehole, blast hole, burr, speaker hole, or even damage drill spindle are easily caused.
The invention has the following advantages:
1, prevent to do over again, save the cost: before not improving, every production >=3.5mm macropore hole item number generates burr, blast hole after drilling
Deng abnormal, it need to manually repair and scrape and main shaft damage, consume manpower, time, about 30,000 yuan/month of cost；Rework rate is zero after improvement, greatly
Big save the cost.
2, product quality yield is improved, plan delivery rate is promoted: manually repairing and scrape burr, still part residual thin portion point, copper facing
It even will cause and scrap after finished product；Blast hole also has the big situation in hole, causes to scrap risk.
3, it increases customer satisfaction degree, reduce customer complaint and withholds.
Detailed description of the invention
Fig. 1 is the hole structure schematic diagram of 1 processing method of embodiment；
Fig. 2 is the hole structure schematic diagram of 1 processing method of embodiment.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
A method of improving PCB drilling quality, which comprises the following steps:
S1. power hole is unloaded by certain diameter subdrilling, then bores macropore/slot；
S2. the quantity for unloading power hole is 2-6, guarantees stress balance when boring under macropore；
S3. the setting of power pitch of holes will be unloaded in the reasonable scope；
S4. according to boring macropore/slot and unloading the parameter in power hole, the diameter for unloading power hole is obtained by calculation formula, improves drilling quality.
Further, for the short slot of length-width ratio k < 2 after compensation, the case where using drill cutter diameter >=3.5mm, 3-5 is bored
A power of unloading hole.
Further, for slot length-width ratio 1.3, groove width radius R 1.75mm the case where, bores four and unloads power hole, described to unload
Power pitch of holes M is 0.15mm, and the power of the unloading hole includes symmetrically arranged first unloading power hole, second unloading power hole, and described first unloads power
The diameter in hole is 1.603mm, the second diameter 1.675mm for unloading power hole, then the calculated value for unloading power bore dia 2r is chosen
1.603mm。
Further, the diameter in the power of the unloading hole is 1.6mm.
Further, the calculation formula are as follows:
Unloading power bore dia=(diameter macropores/slot diameter -0.424)/2.414(can the adjustment in the ± 0.3mm), unload power hole edge and big
Hole edge is tangent and guarantees to unload power pitch of holes >=0.15mm.
Embodiment 2
A method of improving PCB drilling quality, which comprises the following steps:
S1. power hole is unloaded by certain diameter subdrilling, then bores macropore/slot；
S2. the quantity for unloading power hole is 2-6, guarantees stress balance when boring under macropore；
S3. the setting of power pitch of holes will be unloaded in the reasonable scope；
S4. according to boring macropore/slot and unloading the parameter in power hole, the diameter for unloading power hole is obtained by calculation formula, improves drilling quality.
Further, for need to drill be circular hole, after compensation length-width ratio k >=2 slot, using drill cutter diameter >=
The case where 3.5mm, bores 2-6 and unloads power hole.
Further, for diameter/groove width 4.0, slot length-width ratio 1.0, groove width radius R 2.0mm, four is bored and unloads power
Hole, the power of the unloading pitch of holes M are 0.15mm, unload power bore dia 2r calculated value 1.569.
Further, the diameter in the power of the unloading hole is 1.35 mm.
Further, the calculation formula are as follows:
Unloading power bore dia=(diameter macropores/slot diameter -0.424)/2.414(can the adjustment in the ± 0.3mm), unload power hole edge and big
Hole edge is tangent and guarantees to unload power pitch of holes >=0.15mm.
Embodiment 3
A method of improving PCB drilling quality, which comprises the following steps:
S1. power hole is unloaded by certain diameter subdrilling, then bores macropore/slot；
S2. the quantity for unloading power hole is 2-6, guarantees stress balance when boring under macropore；
S3. the setting of power pitch of holes will be unloaded in the reasonable scope；
S4. according to boring macropore/slot and unloading the parameter in power hole, the diameter for unloading power hole is obtained by calculation formula, improves drilling quality.
Further, for the short slot of length-width ratio k < 2 after compensation, the case where using drill cutter diameter >=3.5mm, 3 are bored
Unload power hole.
Further, for slot length-width ratio 1.1, groove width radius R 1.75mm the case where, bores 3 and unloads power hole, described to unload
Power pitch of holes M is 0.16mm, and the power of the unloading hole includes symmetrically arranged first unloading power hole, second unloading power hole, and described first unloads power
The diameter in hole is 1.603mm, the second diameter 1.675mm for unloading power hole, then the calculated value for unloading power bore dia 2r is chosen
1.603mm。
Further, the diameter in the power of the unloading hole is 1.6mm.
Further, the calculation formula are as follows:
Unloading power bore dia=(diameter macropores/slot diameter -0.424)/2.414(can the adjustment in the ± 0.3mm), unload power hole edge and big
Hole edge is tangent and guarantees to unload power pitch of holes >=0.15mm.
Embodiment 4
A method of improving PCB drilling quality, which comprises the following steps:
S1. power hole is unloaded by certain diameter subdrilling, then bores macropore/slot；
S2. the quantity for unloading power hole is 2-6, guarantees stress balance when boring under macropore；
S3. the setting of power pitch of holes will be unloaded in the reasonable scope；
S4. according to boring macropore/slot and unloading the parameter in power hole, the diameter for unloading power hole is obtained by calculation formula, improves drilling quality.
Further, for the short slot of length-width ratio k < 2 after compensation, the case where using drill cutter diameter >=3.5mm, 5 are bored
Unload power hole.
Further, for slot length-width ratio 1.5, groove width radius R 1.75mm the case where, bores 5 and unloads power hole, described to unload
Power pitch of holes M is 0.16mm, and the power of the unloading hole includes symmetrically arranged first unloading power hole, second unloading power hole, and described first unloads power
The diameter in hole is 1.603mm, the second diameter 1.675mm for unloading power hole, then the calculated value for unloading power bore dia 2r is chosen
1.603mm。
Further, the diameter in the power of the unloading hole is 1.6mm.
Further, the calculation formula are as follows:
Unloading power bore dia=(diameter macropores/slot diameter -0.424)/2.414(can the adjustment in the ± 0.3mm), unload power hole edge and big
Hole edge is tangent and guarantees to unload power pitch of holes >=0.15mm.
Embodiment 5
A method of improving PCB drilling quality, which comprises the following steps:
S1. power hole is unloaded by certain diameter subdrilling, then bores macropore/slot；
S2. the quantity for unloading power hole is 2-6, guarantees stress balance when boring under macropore；
S3. the setting of power pitch of holes will be unloaded in the reasonable scope；
S4. according to boring macropore/slot and unloading the parameter in power hole, the diameter for unloading power hole is obtained by calculation formula, improves drilling quality.
Further, for need to drill be circular hole, after compensation length-width ratio k >=2 slot, using drill cutter diameter >=
The case where 3.5mm, bores 2 and unloads power hole.
Further, for diameter/groove width 4.0, slot length-width ratio 0.8, groove width radius R 2.0mm, 2 is bored and unloads power
Hole, the power of the unloading pitch of holes M are 0.16mm, unload power bore dia 2r calculated value 1.569.
Further, the diameter in the power of the unloading hole is 1.35 mm.
Further, the calculation formula are as follows:
Unloading power bore dia=(diameter macropores/slot diameter -0.424)/2.414(can the adjustment in the ± 0.3mm), unload power hole edge and big
Hole edge is tangent and guarantees to unload power pitch of holes >=0.15mm.
Embodiment 6
A method of improving PCB drilling quality, which comprises the following steps:
S1. power hole is unloaded by certain diameter subdrilling, then bores macropore/slot；
S2. the quantity for unloading power hole is 2-6, guarantees stress balance when boring under macropore；
S3. the setting of power pitch of holes will be unloaded in the reasonable scope；
S4. according to boring macropore/slot and unloading the parameter in power hole, the diameter for unloading power hole is obtained by calculation formula, improves drilling quality.
Further, for need to drill be circular hole, after compensation length-width ratio k >=2 slot, using drill cutter diameter >=
The case where 3.5mm, bores 6 and unloads power hole.
Further, for diameter/groove width 4.0, slot length-width ratio 1.2, groove width radius R 2.0mm, four is bored and unloads power
Hole, the power of the unloading pitch of holes M are 0.12mm, unload power bore dia 2r calculated value 1.569.
Further, the diameter in the power of the unloading hole is 1.35 mm.
Further, the calculation formula are as follows:
Unloading power bore dia=(diameter macropores/slot diameter -0.424)/2.414(can the adjustment in the ± 0.3mm), unload power hole edge and big
Hole edge is tangent and guarantees to unload power pitch of holes >=0.15mm.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.It is noted that the technical characteristic being not described in detail in the present invention, it can be by appointing
One prior art is realized.
Claims (8)
1. a kind of method for improving PCB drilling quality, which comprises the following steps:
S1. power hole is unloaded by certain diameter subdrilling, then bores macropore/slot；
S2. the quantity for unloading power hole is 2-6, guarantees stress balance when boring under macropore；
S3. the setting of power pitch of holes will be unloaded in the reasonable scope；
S4. according to boring macropore/slot and unloading the parameter in power hole, the diameter for unloading power hole is obtained by calculation formula, improves drilling quality.
2. the method according to claim 1 for improving PCB drilling quality, which is characterized in that for length-width ratio k < after compensation
2 short slot the case where using drill cutter diameter >=3.5mm, bores 3-5 and unloads power hole.
3. the method according to claim 2 for improving PCB drilling quality, which is characterized in that for slot length-width ratio 1.1-
1.5, the case where groove width radius 1.75mm, four is bored and unloads power hole, the power of the unloading pitch of holes is 0.12-0.16mm, the power of the unloading hole
Power hole is unloaded including symmetrically arranged first, second unloads power hole, and the described first diameter for unloading power hole is 1.603mm, second unloads power hole
Diameter 1.675mm, then the calculated value for unloading power bore dia chooses 1.603mm.
4. the method according to claim 3 for improving PCB drilling quality, which is characterized in that the diameter in the power of the unloading hole is
1.6mm。
5. the method according to claim 1 for improving PCB drilling quality, which is characterized in that be circular hole for needs drilling,
The slot of length-width ratio k >=2 after compensation the case where using drill cutter diameter >=3.5mm, bores 2-6 and unloads power hole.
6. it is according to claim 5 improve PCB drilling quality method, which is characterized in that for diameter/groove width 4.0,
Slot length-width ratio 0.8-1.2, groove width radius 2.0mm bore four and unload power hole, and the power of the unloading pitch of holes is 0.12-0.16mm, unloads power
Bore dia calculated value 1.569.
7. the method according to claim 6 for improving PCB drilling quality, which is characterized in that the diameter in the power of the unloading hole is
1.35 mm。
8. the method according to claim 1 for improving PCB drilling quality, which is characterized in that the calculation formula are as follows: unload power
Bore dia=(diameter macropores/slot diameter -0.424)/2.414, unload power hole edge and big hole edge it is tangent and guarantee unload power pitch of holes >=
0.15mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811392939.1A CN109729646A (en) | 2019-03-12 | 2019-03-12 | A method of improving PCB drilling quality |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392939.1A CN109729646A (en) | 2019-03-12 | 2019-03-12 | A method of improving PCB drilling quality |
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| CN109729646A true CN109729646A (en) | 2019-05-07 |
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| CN201811392939.1A Pending CN109729646A (en) | 2019-03-12 | 2019-03-12 | A method of improving PCB drilling quality |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405762A (en) * | 2020-03-18 | 2020-07-10 | 广州兴森快捷电路科技有限公司 | Method and device for adding force-unloading hole, computer equipment and storage medium |
| CN113891563A (en) * | 2021-10-22 | 2022-01-04 | 奥士康精密电路（惠州）有限公司 | Efficient processing method for improving drilling quality |
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| JP2007098502A (en) * | 2005-10-04 | 2007-04-19 | Elna Co Ltd | Oblong hole-machining method for printed circuit board |
| CN104427768A (en) * | 2013-08-29 | 2015-03-18 | 北大方正集团有限公司 | Circuit board drilling method and circuit board manufactured by method |
| CN108135086A (en) * | 2017-12-21 | 2018-06-08 | 皆利士多层线路版(中山)有限公司 | The boring method of thick copper circuit board |
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2019
- 2019-03-12 CN CN201811392939.1A patent/CN109729646A/en active Pending
Patent Citations (3)
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| JP2007098502A (en) * | 2005-10-04 | 2007-04-19 | Elna Co Ltd | Oblong hole-machining method for printed circuit board |
| CN104427768A (en) * | 2013-08-29 | 2015-03-18 | 北大方正集团有限公司 | Circuit board drilling method and circuit board manufactured by method |
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| 孟庆龙: "《电器制造技术手册》", 31 December 2000 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405762A (en) * | 2020-03-18 | 2020-07-10 | 广州兴森快捷电路科技有限公司 | Method and device for adding force-unloading hole, computer equipment and storage medium |
| CN111405762B (en) * | 2020-03-18 | 2022-05-17 | 广州兴森快捷电路科技有限公司 | Method and device for adding force-unloading hole, computer equipment and storage medium |
| CN113891563A (en) * | 2021-10-22 | 2022-01-04 | 奥士康精密电路（惠州）有限公司 | Efficient processing method for improving drilling quality |
| CN113891563B (en) * | 2021-10-22 | 2024-03-22 | 奥士康科技股份有限公司 | Efficient treatment method for improving drilling quality |
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Application publication date: 20190507 |