CN104781038A - Cooling apparatus and method of drills for printed circuit boards - Google Patents

Cooling apparatus and method of drills for printed circuit boards Download PDF

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Publication number
CN104781038A
CN104781038A CN201280075660.5A CN201280075660A CN104781038A CN 104781038 A CN104781038 A CN 104781038A CN 201280075660 A CN201280075660 A CN 201280075660A CN 104781038 A CN104781038 A CN 104781038A
Authority
CN
China
Prior art keywords
chamber
drill bit
equipment
cooling material
shell
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.)
Pending
Application number
CN201280075660.5A
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Chinese (zh)
Inventor
冯涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of CN104781038A publication Critical patent/CN104781038A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/005—Devices for removing chips by blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1038—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
    • B23Q11/1061—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality using cutting liquids with specially selected composition or state of aggregation

Abstract

An apparatus and a method for cooling a drill bit, the apparatus includes a housing (18) having an open ended chamber (22) therein which extends through the housing (18) for receiving a drill bit (14), a first passage (32) for providing a cooling substance (42) to cool the drill bit (14), and an outlet in communication with the chamber (22) and through which the drill bit (14) can extend for drilling. The apparatus and the method can effectively avoid the smearing without sacrificing the speed of drilling process.

Description

Cooling is used for the drill bit of printed circuit board (PCB)
Description
This detailed description of the invention relates to the equipment for holing in the printed circuit boards.
Printed circuit board (PCB) (PCBs) for most of type of electronics industry is made up of multi-layer resinous layer and metal level.PCB manufacturer needs to bore a large amount of holes in each circuit board.This some holes is copper facing therein subsequently, and copper is used as the connector between circuit board multilayer.In bore process, the resin bed of PCB is heated and can " applies (smeared) " in the layers of copper in hole, thus prevent the electrical contact between each layer after copper facing.Therefore " coating (smear) " that cause in hole must remove before electroplating technology.Which results in additional unwanted PCB process time.
Heat is produced during the cutting occurred during PCB boring and grinding process.Carrying out self-drilling temperature can up to 300 degree Celsius.Coating because of each side in hole of boring generation is that the epoxy resin layer melted in PCB by hot drill bit is formed.In addition, drill bit starts to wear and tear and the drill bit of wearing and tearing is tending towards destroying the coating that produces because using repeatedly.A kind of mode reducing coating correspondingly reduces the speed of boring, but it reduce efficiency and the usefulness of PCB assembly line technique and boring.Even if need to remove coating after this, large-scale production regulation is drilled sooner more economically.
Therefore, be worth having and a kind ofly use boring to avoid applying but do not sacrifice the equipment of bore process speed.
Accompanying drawing explanation
In order to more intactly understand this detailed description of the invention, can refer to below in conjunction with the description of the drawings, wherein:
Fig. 1 shows the detailed description of the invention of the equipment for cooling drill bit of the present invention; And
Fig. 2 shows the nozzle of the equipment of the detailed description of the invention for Fig. 1.
Detailed description of the invention
The equipment of the detailed description of the invention shown in Fig. 1 is shown as 10 usually, and uses together with showing the drill bit of main shaft 12.
Drill bit 14 for such as holing in printed circuit board (PCB) (PCB) 16 is attached to main shaft 12.Should be understood that, drill bit 14 is used in other object or goods and holes.
Equipment 10 comprises the gland 18 or shell that have and define the chamber 22 of opening or the sidewall 20 in space.Main shaft 12 is connected to gland 18 by the machanical fastener such as bolt.Gland 18 can be made up of metal or plastics.Chamber 22 is openings in both sides as shown in Figure 1, and has the size and dimension receiving main shaft 12 and drill bit 14.As shown in Figure 1, chamber 22 is configured with step 23, and this step 23 has the diameter less than chamber to receive the degree of depth certain in main shaft 12 to chamber, and this degree of depth and drill bit 14 drill through and to penetrate a part of PCB16 suitable.In fact, the descending motion of the common main shaft 12 retrained in opening chamber 22 of chamber 22 and bottom 24 of gland 18.The bottom 25 of chamber 22 has the size and dimension receiving drill bit 14 and be placed to the regional alignment hole to be drilled with PCB16.
As shown in the figure, spacer member 26 or insert adjacent with shell and arrange between the bottom surface 28 and the upper surface 30 of PCB16 of sidewall 20.Spacer member 26 can be formed as a part for gland 18.During holing, when drill bit 14 drills through PCB16, spacer member 26 supports the head bored.During some application, when gland 18 and interval 26 are placed for boring, spacer member can form hermetic sealing, thus chamber 22 is closed relative to the outside air of gland and PCB.Spacer member 26 can be made up of metal or plastics, but is normally made up of the material harder than the material manufacturing gland 18.
Gland 18 comprises port in sidewall 20 or path.The first port 32 in sidewall 20 or path are used for cooling material to introduce opening chamber 22.Second port 34 or path are discharged from chamber 22 by such as blast pipe 36 or are deflated or any particle matter.
About the first port 32, tracheae 38 can extend across the first port and is included in the end 40 that chamber 22 stops close to drill bit 14 place.Carbon dioxide (CO 2) 42 to introduce from remote source (not shown) by the pipeline 44 being connected to tracheae 38.For the valve 46 of gas, flowmeter 48 and Pressure gauge 50 and pipeline 44 fluid communication.Valve 46 is arranged in the upstream of flowmeter 48, and flowmeter is arranged in the upstream of Pressure gauge 50, and these are all arranged in the upstream of tracheae 38.
With liquid CO 2form provides CO 242, thus be phase-changed into gaseous state or solid-state (dry ice) by tracheae 38 to enter period from tracheae end 40 at it.CO 2can be used as spraying 45 be sprayed into or pulse into chamber 22.End can comprise nozzle.Along with pressure declines along tracheae 38, liquid CO 2become the mixture of gas and solid, and solid finally also becomes gas.CO 2gas cooling drill bit 14.Main shaft 12 rotates to promote drill bit 14 through PCB16 with very high speed.Cool a period of time occurred in when drill bit 14 is regained or retracted from the hole that it has just bored among PCB16.This is because drill bit 14 is exposed in the refrigerating gas of chamber 22.The hole of PCB is little and is being drilled in a flash.That is, when drill bit 14 is retracted or is removed from the hole that it has just bored among PCB16, drill bit is exposed in gaseous carbon dioxide immediately to cool drill bit, thus it is in the temperature of reduction when the next one is hole to be drilled, thus reduce the possibility of the epoxy melting or coating that can occur in resin bed.Only by the mode of example, because employ CO 2, the temperature of chamber 22 is-10 DEG C to 5 DEG C.
If necessary, can to pulse liquid carbon dioxide and cooling agent CO 2jet is directed pointing drill bit.In fact, when retracted drill bit cooling thus when upper once drilling operation, it is in the temperature of reduction, prevent thus frictional heat accumulate to melt epoxy resin board.Or, from hole, the CO that just can occur to pulse is regained once drill bit 2contact drill bit 14, and until time drill bit will start the next hole of boring PCB16.In order to provide the CO of pulsation 2, employ for liquid CO 2pump 43.Pump 43 and pipeline 44 fluid communication, and can in the upstream of valve 46.Pump 43 can time control to provide CO 2pulse burst is to chamber 22, or pump can be controlled by the signal transmitted from brill 12.That is, when drill bit 14 is retracted from PCB, brill can transmit or triggering signal to pump 43 to provide CO 2to chamber 22.CO 2the injection cycle can also work as the liquid CO of pulse when drill bit 14 contacts PCB16 2initialize and start, and stop when drill bit is regained from PCB.
Or spraying 45 can be used as spraying, stream of pulses or jet and is continuously supplied to chamber 22.But, usually can stop CO to PCB16 boring 2enter drilled through hole to cool drill bit 14, until time drill bit is regained from hole.Therefore, only can when in fact drill bit 14 does not bore the hole of PCB16 by CO 2be provided to chamber 22, thus save CO from damage 2.That is, adversely in boring procedure or PCB16, CO is provided in boring 2to chamber 22; But this can cause using more CO 2.
With reference to Fig. 2, show the nozzle 52 that another kind is arranged on tracheae 38 end 40.In this nozzle 52 (also referred to as coaxitron nozzle 52), gaseous state or liquid CO 254 are introduced into interior pipe 56, and nitrogen 58 (such as 3 bar (bar)) be introduced into for the outer tube 62 of nitrogen or the arm 60 of pipe UNICOM.Interior pipe 56 is arranged in outer tube 62.CO 254 and nitrogen 58 flow along nozzle 52, thus when gas leaves nozzle to be provided to drill bit 14, nitrogen is outside carbon dioxide 54 and cover carbon dioxide 54 in some applications.Nitrogen can reduce the condensation of moisture on drill bit 14 and PCB16.Interior pipe 56 and outer tube can be coaxial.Tracheae 38, nozzle 40 and coaxial nozzle 52 can be made up of stainless steel.
This detailed description of the invention decrease the coating that uses known rig to occur and eliminate subsequently to the de-smear technique required for same equipment.This detailed description of the invention also reduces the wearing and tearing of drill bit 14 and extends its working life.Make the surface in the hole of boring in PCB16 more smooth and penetration rate reduces because drill bit is overheated and also sufficiently reduces coating.
Should be understood that, detailed description of the invention as herein described is only exemplary, and those skilled in the art can make variants and modifications without departing from the spirit and scope of the present invention.These all variants and modifications are intended to be included within the scope of description as herein described and claim.In addition, disclosed whole embodiments not necessarily two select one, because working of an invention mode can combine to provide required result.

Claims (20)

1., for cooling an equipment for drill bit, comprising:
Have the shell of opening chamber, wherein said chamber extends through described shell to receive drill bit; Described chamber is arrived to cool the first passage of drill bit for providing cooling material; And outlet, described outlet and chamber UNICOM and drill bit can extend there through and extend to hole.
2. equipment as claimed in claim 1, is characterized in that, comprise further and extend through described first passage with the pipeline providing cooling material to arrive described chamber.
3. equipment as claimed in claim 1, it is characterized in that, comprise second channel further, described second channel and described chamber UNICOM are to discharge air and particle matter from described chamber.
4. equipment as claimed in claim 3, is characterized in that, comprise the blast pipe with described second channel UNICOM further.
5. equipment as claimed in claim 1, it is characterized in that, comprise the spacer member with the hole extended there through further, the size and dimension of described spacer member is designed to adjacent with described shell, and described hole is aimed at described outlet.
6. equipment as claimed in claim 5, it is characterized in that, described spacer member is made up of the material of the group being selected from the composition comprising metal, plastics and have the hardness larger than shell hardness.
7. equipment as claimed in claim 1, it is characterized in that, described cooling material is selected from and comprises carbon dioxide (CO 2), nitrogen (N 2) and CO 2with N 2the group of mixture.
8. equipment as claimed in claim 2, is characterized in that, comprises further and is connected to pipeline one end and the nozzle placed in the cavity, for spraying cooling material to contact drill bit.
9. equipment as claimed in claim 8, is characterized in that, described nozzle comprises interior pipe and surrounds the outer tube of described interior pipe, provides CO by described interior pipe 2, and provide N by described outer tube 2.
10. equipment as claimed in claim 9, it is characterized in that, described inner and outer tubes are coaxial.
11. equipment as claimed in claim 1, is characterized in that, comprise the pump with described cooling material fluid communication further, with described cooling material of pulsing to described chamber.
12. equipment as claimed in claim 1, it is characterized in that, described shell is formed by the material being selected from the group comprising metal and plastics.
13. 1 kinds, for cooling the method for drill bit, comprising:
Drill bit is received in the chamber of shell;
There is provided cooling material to chamber to cool drill bit; And
Hold cooling material in the chamber.
14., as the method for claim 13, is characterized in that, after providing cooling material to occur in use bit bore.
15., as the method for claim 13, is characterized in that, comprise further and discharge cooling material from chamber.
16. as the method for claim 13, and it is characterized in that, cooling material is pulsed into chamber by the interval providing cooling material to comprise selecting.
17. as the method for claim 13, and it is characterized in that, described cooling material is selected from and comprises CO 2, N 2and CO 2with N 2the group of mixture.
18., as the method for claim 17, is characterized in that, provide CO 2with N 2mixture comprises provides first gang of CO 2and adjacent with first strand second gang of N 2to chamber.
19. as the method for claim 18, and it is characterized in that, first strand is coaxial with second strand.
20., as the method for claim 13, is characterized in that, hold cooling material and comprise the chamber of shell is sealed relative to the outside air of shell.
CN201280075660.5A 2012-10-12 2012-10-12 Cooling apparatus and method of drills for printed circuit boards Pending CN104781038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/082832 WO2014056180A1 (en) 2012-10-12 2012-10-12 Cooling apparatus and method of drills for printed circuit boards

Publications (1)

Publication Number Publication Date
CN104781038A true CN104781038A (en) 2015-07-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201280075660.5A Pending CN104781038A (en) 2012-10-12 2012-10-12 Cooling apparatus and method of drills for printed circuit boards

Country Status (3)

Country Link
CN (1) CN104781038A (en)
TW (1) TW201414555A (en)
WO (1) WO2014056180A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110860710A (en) * 2019-11-22 2020-03-06 深圳市文地科技有限公司 A digit control machine tool for processing cooling of being convenient for of part
CN114310477A (en) * 2022-03-15 2022-04-12 四川英创力电子科技股份有限公司 Cooling and lubricating system of drilling equipment of printed circuit board

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105171023B (en) * 2014-06-06 2018-02-02 大族激光科技产业集团股份有限公司 The mechanical drilling method of Micro-probe tool and its rig of use
CN106944647A (en) * 2017-04-19 2017-07-14 广东工业大学 A kind of high multi-layer PCB board deep hole drilling method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588244A2 (en) * 1992-09-12 1994-03-23 WÜRTH ELEKTRONIK GmbH & Co. KG Method and apparatus for drilling printed circuit boards
US5332341A (en) * 1991-05-30 1994-07-26 Hitachi Seiko Ltd. Pressure foot of printed circuit board drilling apparatus
CN201552324U (en) * 2009-09-29 2010-08-18 深圳市大族激光科技股份有限公司 Chips discharging mechanism of drilling machine of printed circuit board
CN102059581A (en) * 2010-11-23 2011-05-18 深南电路有限公司 Numerical control drill head cooling device and method
CN202137636U (en) * 2011-06-13 2012-02-08 广德力达电气有限公司 Water cooling device for drilling machines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529340A (en) * 1983-03-24 1985-07-16 Wheelabrator-Frye, Inc. Drilling method and apparatus
JP2905842B2 (en) * 1989-05-30 1999-06-14 日立精工株式会社 Printed circuit board drilling machine and printed circuit board holding method in this drilling machine
CN202087453U (en) * 2010-12-15 2011-12-28 杭州柏年光电标饰有限公司 Adjustable spray device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5332341A (en) * 1991-05-30 1994-07-26 Hitachi Seiko Ltd. Pressure foot of printed circuit board drilling apparatus
EP0588244A2 (en) * 1992-09-12 1994-03-23 WÜRTH ELEKTRONIK GmbH & Co. KG Method and apparatus for drilling printed circuit boards
CN201552324U (en) * 2009-09-29 2010-08-18 深圳市大族激光科技股份有限公司 Chips discharging mechanism of drilling machine of printed circuit board
CN102059581A (en) * 2010-11-23 2011-05-18 深南电路有限公司 Numerical control drill head cooling device and method
CN202137636U (en) * 2011-06-13 2012-02-08 广德力达电气有限公司 Water cooling device for drilling machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110860710A (en) * 2019-11-22 2020-03-06 深圳市文地科技有限公司 A digit control machine tool for processing cooling of being convenient for of part
CN114310477A (en) * 2022-03-15 2022-04-12 四川英创力电子科技股份有限公司 Cooling and lubricating system of drilling equipment of printed circuit board
CN114310477B (en) * 2022-03-15 2022-05-20 四川英创力电子科技股份有限公司 Cooling and lubricating system of drilling equipment of printed circuit board

Also Published As

Publication number Publication date
WO2014056180A1 (en) 2014-04-17
TW201414555A (en) 2014-04-16

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Application publication date: 20150715

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