CN203610741U - Special drill bit for PCB - Google Patents
Special drill bit for PCB Download PDFInfo
- Publication number
- CN203610741U CN203610741U CN201320739781.7U CN201320739781U CN203610741U CN 203610741 U CN203610741 U CN 203610741U CN 201320739781 U CN201320739781 U CN 201320739781U CN 203610741 U CN203610741 U CN 203610741U
- Authority
- CN
- China
- Prior art keywords
- drillstock
- drill
- blank
- drill lip
- external diameter
- 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.)
- Expired - Lifetime
Links
- 238000003466 welding Methods 0.000 claims abstract description 42
- 239000010935 stainless steel Substances 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 238000000227 grinding Methods 0.000 abstract description 50
- 238000012545 processing Methods 0.000 abstract description 24
- 238000013461 design Methods 0.000 abstract description 6
- 238000005476 soldering Methods 0.000 abstract description 5
- 241000125205 Anethum Species 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 23
- 239000000463 material Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 20
- 238000003754 machining Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Images
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model relates to the field of design of special drill bits for PCB and discloses a special dill bit for PCB. The special drill bit for PCB comprises a bit edge and a drillstock with the external diameter less than that of the bit edge. The outer surface of the bit edge is provided with a spiral chip groove; one end of the bit edge is connected with the drillstock and the other end of the bit edge is provided with a drill point; the bit edge is made of a cemented carbide bar; the drillstock is made of a stainless steel bar with the external diameter equal to that of the cemented carbide bar; and the bit edge is welded to the drillstock through a soldering terminal or a soldering wire. The bit edge and the drillstock are made of the blanks with equal external diameters. Therefore, a clamp for welding can be manufactured easily, the coaxiality of the bit edge and the drillstock can be guaranteed, and the special drill bit for PCB has the advantages that a centerless grinding machine can be used for removing crator at the surfaces of the drillstock and the bit edge through grinding and processing the external diameter of the bit edge through grinding, so that the aesthetic effect of the appearance of the special drill bit for PCB can be improved and the dimension accuracy, the circular degrees and the degree of finish of the excircle of the bit edge can be improved.
Description
Technical field
The utility model belongs to pcb board target drill design field, relates in particular to a kind of pcb board target drill.
Background technology
Locating hole on printed circuit board (being called for short PCB) and components and parts installing hole are general adopts special pcb board target drill to process.This pcb board target drill comprises drill lip and drillstock, and wherein, the drill bit that drill lip external diameter is greater than drillstock external diameter is relatively more conventional at present a kind of pcb board target drill.Particularly, drill lip external diameter is generally between 3.2mm～6.5mm, and in order to simplify the structural design of drive unit, the external diameter unification of drillstock is set to 3.175mm(1/8 inch).The traditional diamond-making technique of this pcb board target drill adopts one to process, be that drill lip and drillstock are processed by same alloy bar, because the external diameter of drillstock is less than the external diameter of drill lip, therefore, add the carbide alloy material end grinding away man-hour more at every turn in drillstock external diameter procedure of processing, like this, caused on the one hand the waste of the energy, on the other hand because the material cost of carbide alloy is higher, therefore make the rapidoprint cost of pcb board target drill higher.
In order to solve the problem producing in traditional integral processing method, prior art, a kind of welded type processing method of pcb board target drill has been proposed, as shown in Figure 4 and Figure 5, it adopts carbide alloy bar as drill lip blank 11a ', adopt the carbide alloy drillstock reclaiming from waste and old pcb board target drill cutting as drillstock blank 12a ', and drill lip blank 11a ' is fixedly connected with by welding manner with drillstock blank 12a ', and then drill lip blank 11a ' is processed.Although this welded type processing method has been saved the energy and cost to a certain extent, it still has the following disadvantages in concrete application;
1) not identical with the external diameter of drillstock blank 12a ' (external diameter of drill lip blank 11a ' is greater than the external diameter of drillstock blank 12a ' to the external diameter due to drill lip blank 11a ': the external diameter of drill lip blank 11a ' is greater than 3.2mm, the external diameter of the drillstock blank 12a ' reclaiming from waste and old pcb board target drill cutting is 3.175mm), therefore, make in the time of welding operation on the one hand, have relatively high expectations to the drillstock fixture for clamping drillstock blank 12a ' with for the coaxial positioning of the drill lip fixture that clamps drill lip blank 11a ', be difficult to realize, thereby cannot guarantee to weld the axiality of rear drill lip blank 11a ' and drillstock blank 12a ', make the eccentric situation of the drillstock 12 that is finally processed to form ' and drill lip 11 ' exist, make on the other hand the drill lip blank 11a ' after welding cannot adopt centerless grinder to carry out grinding external diameter, and can only carry out grinding with cylindrical grinder, and we know, the excircle dimension precision, circularity, the fineness that are processed by cylindrical grinder is more very different than the excircle dimension precision, circularity, the fineness that are processed by centerless grinder, so had a strong impact on pcb board target drill 1 ' crudy.
2) after drill lip blank 11a ' and the 12a ' welding of drillstock blank, can the joint generation crator 13 of drill lip blank 11a ' and drillstock blank 12a ' ', due to this crator 13 ' in step place, and the external diameter of drillstock blank 12a ' does not have allowance, so make this crator 13 ' be difficult to thorough removing, affected pcb board target drill 1 ' good looking appearance.
3) along with the extensive use of printed circuit board, pcb board target drill 1 ' demand also increasing.And callable carbide alloy drillstock limited amount, and then make drillstock blank 12a ' exist the situation of supplied materials shortage of resources to occur.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of pcb board target drill is provided, and it is intended to solve the technical problem that existing pcb board target drill axiality is low, machining accuracy is low, fineness is poor, weld has crator.
The technical solution of the utility model is: a kind of pcb board target drill, comprise that drill lip and external diameter are less than the drillstock of described drill lip, the outer surface of described drill lip is provided with spiral chip area, one end of described drill lip is connected with described drillstock, the other end is provided with and is cone shape apex point, described drill lip adopts carbide alloy bar to make, and described drillstock adopts external diameter to make with the stainless steel bar that described carbide alloy bar external diameter equates, described drill lip is connected on described drillstock by weld tabs or wire welding.
Particularly, the axiality of described drill lip and described drillstock is ± 0.01mm.
Preferably, the external diameter of described drill lip is between 3.2mm～6.5mm, and the external diameter of described drillstock is 3.175mm.
Preferably, the point angle degree of described apex point is between 155 °～165 °.
Particularly, on described drillstock and away from one end of described drill lip, be provided with the frustum of a cone.
The pcb board target drill that the utility model provides, because adopting the equal blank of external diameter, drill lip and drillstock make, therefore, make in the time of welding operation on the one hand, for clamping the drillstock fixture of drillstock blank and being easy to manufacture for clamping the drill lip fixture of drill lip blank, and the coaxial positioning that can make drillstock blank and drill lip blank is easy to realize, thereby the axiality after the welding of drillstock blank and described drill lip blank be can guarantee, and then drillstock that assurance is finally processed to form and the axiality of drill lip are beneficial to; Make on the other hand drillstock blank and drill lip blank after welding can adopt centerless grinder to carry out the crator that grinding removal welding produces, thereby make pcb board target drill surface there is no crator, improve the good looking appearance of pcb board target drill, and because the external diameter of drill lip can be processed by centerless grinder, therefore, be beneficial to the excircle dimension precision, circularity, the fineness that improve drill lip.Meanwhile, because drillstock is to adopt cheapness and resourceful stainless steel material to make, thus make the material source ratio of drillstock blank be easier to obtain, and can reduce the material cost of drillstock.
Accompanying drawing explanation
Fig. 1 is the pcb board target drill finished product structure schematic diagram that the utility model embodiment provides;
Fig. 2 is the pcb board target drill blahk structure schematic diagram after the drill lip blank that provides of the utility model embodiment and the welding of drillstock blank;
Fig. 3 be the utility model embodiment provide process the pcb board target drill semi-finished product structure schematic diagram after drill lip external diameter and drillstock external diameter;
Fig. 4 is the pcb board target drill finished product structure schematic diagram that prior art provides;
Fig. 5 is the pcb board target drill blahk structure schematic diagram after the drill lip blank that provides of prior art and the welding of drillstock blank.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in FIG. 1 to 3, the pcb board target drill 1 that the utility model embodiment provides, comprise that drill lip 11 and external diameter are less than the drillstock 12 of drill lip 11, on the outer surface of drill lip 11, run through along its length and offer spiral chip area 111, one end of drill lip 11 is connected with drillstock 12, the other end is provided with and is cone shape apex point 112, drill lip 11 adopts carbide alloy bar to make, drillstock 12 adopts external diameter to make with the stainless steel bar that carbide alloy bar external diameter equates, drill lip 11 is connected on drillstock 12 by weld tabs or wire welding, be that welding manner between drill lip 11 and drillstock 12 is that (soldering is to adopt to make solder than the low-melting metal material of mother metal in soldering, weldment and solder are heated to above to solder fusing point, lower than mother metal fusion temperature, utilize liquid solder to soak mother metal, fill play movement and realize with the counterdiffusion of mother metal phase the method that is connected weldment), like this, be beneficial to while guaranteeing to remove drillstock blank 12a and drill lip blank 11a outer round surface crator, between drillstock blank 12a and drill lip blank 11a, still keep being welded to connect relation, thereby can guarantee the connection reliability between drillstock 12 and drill lip 11.The setting of chip area 111, can make the bits end of being dug up in boring procedure can be from the interior tap of chip area 111, thereby can prevent that bits end is deposited in the locating hole of circuit board or components and parts installing hole cause boring situation smooth, that scratch locating hole inwall or components and parts installing hole inwall to occur.The external diameter of drillstock 12 arranges littlely than the external diameter of drill lip 11, and the degree of depth that can make this pcb board target drill 1 hole is greater than the length of drill lip 11, and the degree of depth in the hole getting out can be greater than the length of drill lip 11.We know, in the time that the hole depth of boring is greater than the length of drill lip 11, in boring procedure, drill lip 11 can be absorbed in the locating hole or components and parts installing hole of circuit board completely, now, because the external diameter of drillstock 12 arranges littlely than the external diameter of drill lip 11, therefore, the bits end that boring is dug up can be discharged to drillstock 12 in chip area 111, and outside drillstock 12 is discharged locating hole and components and parts installing hole, cause boring situation smooth, that scratch locating hole inwall or components and parts installing hole inwall to occur thereby can prevent from considering to be worth doing last being deposited in locating hole or components and parts installing hole.Apex point 112 on drill lip 11 is mainly used in guaranteeing the acuteness of drill lip 11, thus the drilling efficiency of pcb board target drill 1 can guarantee to hole time.Drill lip 11 is mainly used in realizing drilling function, and its strength of materials and hardness requirement are higher, and its material is made as to carbide alloy, can prevent that in boring procedure, the light flimsy situation of drill lip 11 occurs, and be beneficial to the hole inner wall smooth that assurance gets out.Drillstock 12 is mainly used in clamping to realize the clamping position to pcb board target drill 1 for fixture, its strength of materials and hardness requirement are lower than the strength of materials of drill lip 11 and hardness requirement, select stainless steel material can meet intensity and the hardness requirement of drillstock 12 in application, the present embodiment, drillstock 12 selects price to make far below the stainless steel material of carbide alloy price, can reduce on the one hand the material cost of drillstock 12, thereby reduce the processing cost of pcb board target drill 1; Can make on the other hand the material source ratio of drillstock blank 12a be easier to obtain.Simultaneously, the utility model, because drill lip 11 and drillstock 12 adopt the blank that external diameter is equal to make, therefore, make in the time of welding operation on the one hand, for clamping drillstock 12 fixtures of drillstock blank 12a and being easy to realize for the coaxial positioning of drill lip 11 fixtures that clamp drill lip blank 11a, thereby reduced the design difficulty of processing of fixture, and be easy to guarantee the axiality of drill lip blank 11a and drillstock blank 12a after welding, and then be beneficial to drillstock 12 that assurance is finally processed to form and the axiality of drill lip 11; Make on the other hand drillstock blank 12a and drill lip blank 11a after welding can adopt centerless grinder to carry out the crator that grinding removal welding produces, thereby make pcb board target drill 1 surface there is no crator, improve the good looking appearance of pcb board target drill 1, and because the external diameter of drill lip 11 can be processed by centerless grinder, therefore, be beneficial to the excircle dimension precision, circularity, the fineness that improve drill lip 11.
Particularly, the axiality of drill lip 11 and drillstock 12 is ± 0.01mm like this, to be beneficial to the drilling quality that guarantees pcb board target drill 1.
Particularly, the external diameter of drill lip 11 is between 3.2mm～6.5mm, and the external diameter of drillstock 12 is 3.175mm.Drill lip 11 is mainly used in realizing drilling function, and the external diameter of drill lip 11 is made as between 3.2mm～6.5mm, can meet the boring requirement of locating hole and components and parts installing hole on most of circuit board; Drillstock 12 is mainly used in clamping to realize the clamping position to pcb board target drill 1 for fixture, the external diameter of drillstock 12 is made as to 3.175mm, can be used in respectively grip size for clamping drillstock 12 unified, thereby can simplify the structural design of fixture and reduce the dimensions of fixture.
Preferably, the point angle degree of apex point 112 is between 155 °～165 °, and like this, point angle degree is larger, meets under the prerequisite of boring demand on the one hand in the acuteness that guarantees apex point, can simplify the difficulty of processing of apex point; The Hardmetal materials amount that need to grind away can reduce grinding apex point 112 on the other hand time, thus unnecessary waste of material can be reduced.
Preferably, as shown in figures 1 and 3, on drillstock 12 and away from one end of drill lip 11, be provided with the frustum of a cone 121.Arranging of the frustum of a cone 121 can reach the object of removing sharp edge on the one hand, can be convenient on the other hand the insertion of drillstock 12 on each fixture and install.The present embodiment, the frustum of a cone 121 is a part for drillstock 12, in concrete application, the frustum of a cone 121 can pass through grinding machine moulding, also can be by lathe turning moulding.
The concrete processing method of the pcb board target drill 1 that the utility model embodiment provides, comprises the steps:
Blank preliminary step, selects stainless steel bar that external diameter is equal and alloy bar respectively as for being processed to form the drillstock blank 12a of drillstock 12 and for being processed to form the drill lip blank 11a of drill lip 11; Stainless steel material can meet intensity and the hardness requirement of drillstock 12 in application, and stainless material cost is far below the cost of carbide alloy, stainless material source is extensive, therefore, drillstock 12 selects stainless steel material to make, can reduce on the one hand the material cost of drillstock 12, thereby reduce the processing cost of pcb board target drill 1; Can make on the other hand the material source ratio of drillstock blank 12a be easier to obtain.
Welding operation step, is integrated drillstock blank 12a and drill lip blank 11a by weld tabs or welding wire soldering; Weld tabs or welding wire are between drillstock blank 12a and drill lip blank 11a, be that welding between drillstock blank 12a and drill lip blank 11a is the welding of two opposing end surfaces, like this, be beneficial to while guaranteeing to remove drillstock blank 12a and drill lip blank 11a outer round surface crator, between drillstock blank 12a and drill lip blank 11a, still keep being welded to connect relation, thereby can guarantee the connection reliability between drillstock 12 and drill lip 11.Simultaneously, we know, axiality size after drillstock blank 12a and drill lip blank 11a welding, the direct decision of axiality size for clamping drillstock 12 fixtures of drillstock blank 12a and locating for clamping drill lip 11 fixtures of drill lip blank 11a during by welding, and because the external diameter of drillstock blank 12a in the present embodiment and drill lip blank 11a equates, therefore, can make to weld time for clamp drillstock 12 fixtures of drillstock blank 12a and for clamp drill lip 11 fixtures of drill lip blank 11a be easy to manufacture, and the coaxial positioning that can make drillstock blank 12a and drill lip blank 11a is easy to realize, thereby can guarantee the axiality after drillstock blank 12a and drill lip blank 11a welding, and then the drillstock 12 that is finally processed to form and can the reach ± 0.01mm of axiality of drill lip 11 are guaranteed.Particularly, because the external diameter of drillstock blank 12a and drill lip blank 11a equates, therefore, when welding, can adopt V-shaped groove to support drillstock blank 12a and drill lip blank 11a, and utilize liftable pressing plate (lifting of lifting pressing plate can by baric systerm control) that drillstock blank 12a and drill lip blank 11a are pressed in V-shaped groove, like this, both can reach the object of locking drillstock blank 12a and drill lip blank 11a, and be beneficial to again by V-shaped groove and guarantee the axiality after drillstock blank 12a and drill lip blank 11a welding.Meanwhile, V-shaped groove also can be convenient to drillstock blank 12a and drill lip blank 11a carries movement thereon, is beneficial to the Automation Design of welding operation.
Go crator and processing drill lip 11 external diameter steps, utilize centerless grinder to carry out grinding and remove the crator of drillstock blank 12a and drill lip blank 11a welding rear surface generation, and utilize centerless grinder by the extremely size consistent with drill lip 11 external diameters of drill lip blank 11a external diameter grinding; Centerless grinder mainly comprises abrasive grinding wheel, guide wheel and supporting bracket, specifically add man-hour, pcb board target drill 1 blank to be processed is positioned on supporting bracket, drive pcb board target drill 1 to rotate by guide wheel, abrasive grinding wheel High Rotation Speed, like this, can reach the object of grinding pcb board target drill 1 cylindrical by pcb board target drill 1 and the friction of abrasive grinding wheel.Centreless grinding has that efficiency is high, cost is low, be suitable for the features such as grinding in enormous quantities, and in the time that this step is carried out penetration type centreless grinding (the whole length direction along pcb board target drill 1 carries out centerless grinding), the multiple pcb board target drills 1 of grinding be can on same centerless grinder, carry out simultaneously, thereby crator and drill lip 11 external diameter working (machining) efficiencies can further improve.Because the external diameter of drillstock blank 12a and drill lip blank 11a equates, therefore be beneficial to, drill lip 11 and the whole grindings of crator on drillstock 12 surfaces are removed, so that final pcb board target drill 1 surface does not have crator.Go crator and processing drill lip 11 external diameter steps, can remove the crator on drill lip blank 11a and drillstock blank 12a surface on the one hand, thereby be beneficial to the good looking appearance that improves pcb board target drill 1; By the cylindrical of centreless grinding mode grinding drill lip 11, can improve dimensional accuracy, circularity, the fineness of drill lip 11 cylindricals on the other hand.
After completing, processing apex point 112 steps complete the whole process of pcb board target drill 1.
Preferably, in blank preliminary step, the external diameter of drillstock blank 12a and drill lip blank 11a is all than the large 0.2mm～0.3mm of the external diameter of drill lip 11.Like this, make the cylindrical of drill lip blank 11a there is the allowance of 0.2mm～0.3mm, thereby can guarantee carrying out smoothly of crator step and processing drill lip 11 external diameter steps, and then can guarantee that crator can thoroughly remove totally, and can guarantee drill lip 11 excircle dimension precision, circularity, fineness; Meanwhile, be unlikely to again to make the allowance of drill lip blank 11a excessive, be beneficial to the working (machining) efficiency that guarantees pcb board target drill 1.
Preferably, in welding operation step, the welding manner between drillstock blank 12a and drill lip blank 11a is high-frequency welding manner.High-frequency welding manner welding efficiency is high, is beneficial to the working (machining) efficiency that improves pcb board target drill 1.And high-frequency welding process can complete by numerical control program control, like this, be beneficial to the working strength that reduces operating personnel, and be beneficial to the welding in enormous quantities of drillstock blank 12a and drill lip blank 11a.In automatic welding process, drillstock blank 12a and drill lip blank 11a can be respectively carry near welding wire or weld tabs from the both sides of welding wire or weld tabs, and welding wire or weld tabs are positioned at the centre of drillstock blank 12a and drill lip blank 11a while making to weld.
Preferably, processing drillstock 12 external diameter steps complete at the enterprising line operate of cylindrical grinder.Processing drillstock 12 external diameter steps are mainly used in processing the cylindrical cylindrical of drillstock 12, and we know, cylindrical cylindrical can be processed on cylindrical grinder or lathe or centerless grinder, because the final external diameter of drillstock 12 is less than the final external diameter of drill lip 11, can not complete at the enterprising line operate of centerless grinder therefore process drillstock 12 external diameter steps; Simultaneously, because the cylindrical excircle dimension precision processing on cylindrical grinder, circularity, fineness are than the cylindrical excircle dimension precision, the circularity, highly polished that process on lathe, therefore, the present embodiment, processing drillstock 12 external diameter steps complete at the enterprising line operate of cylindrical grinder, dimensional accuracy, circularity, the fineness of drillstock 12 cylindricals can be effectively guaranteed, thereby the machining accuracy of pcb board target drill 1 can be guaranteed.
More preferably, the cylindrical grinder that processing drillstock 12 external diameter steps adopt is numerical control external cylindrical grinding machine, numerical control external cylindrical grinding machine is the numerically control grinder that is mainly used in grinding cylinder shape and conical external surface, it specifically presses processing request preprogramming, sends numerical information instruction process by control system.Numerical control external cylindrical grinding machine has generalization, the degree of modularity is high, the features such as high accuracy, high rigidity, high efficiency and high-adaptability.In the time of concrete operations, only pcb board target drill 1 to be processed manually need be clamped on the fixture of numerical control external cylindrical grinding machine, and press after start button, numerical control external cylindrical grinding machine just can process according to the numerical control program weaving (numerical control program can weave in advance and be recorded in the control system of numerical control external cylindrical grinding machine) cylindrical of drillstock 12 automatically, its automaticity is high, machining accuracy is high, be beneficial to the working strength that reduces operating personnel, and be beneficial to the grinding in enormous quantities of drillstock 12 cylindricals.Simultaneously, due to drillstock 12 Excircle machinings of the pcb board target drill 1 for same specification, only need a numerical control program of establishment, therefore, in concrete application, can weave in advance the numerical control program for processing all size pcb board target drill 1 and be recorded on the control system of numerical control external cylindrical grinding machine, so that can call in time corresponding numerical control program in the time of processing different size pcb board target drill 1, and do not need to process all numerical programming programs at every turn, be beneficial to the process operation process of simplifying.
Preferably, processing chip area 111 steps complete at the enterprising line operate of slot grinding lathe.Slot grinding lathe can be used for the spiral groove of grinding, and chip area 111 is spiral helicine groove.Specifically add man-hour, can be by the fixture clamping drillstock 12 on slot grinding lathe to realize the installation location of pcb board target drill 1 to be processed on slot grinding lathe.It adopts special pcb board target drill 1 slot grinding lathe to carry out grinding chip area 111, can guarantee working (machining) efficiency and the machining accuracy of chip area 111.More preferably, slot grinding machine adopted numerical control grinding groove machine tool, like this, in the time of concrete operations, only the drillstock of pcb board target drill 1 to be processed 12 manually need be clamped on the fixture of numerical control grinding groove machine tool, and press after start button, numerical control grinding groove machine tool just can process chip area 111 automatically according to the numerical control program weaving, its automaticity is high, machining accuracy is high, is beneficial to the working strength that reduces operating personnel, and is beneficial to the grinding in enormous quantities of chip area 111.
Preferably, processing apex point 112 steps complete at the enterprising line operate of pointing machine.Pointing machine can be used for grinding and forms the acuminous external conical surface of tool.It adopts special pcb board target drill 1 pointing machine to carry out grinding apex point 112, can guarantee working (machining) efficiency and the machining accuracy of apex point 112.More preferably, pointing machine adopts numerical control pointing machine, like this, in the time of concrete operations, only pcb board target drill 1 to be processed manually need be clamped in to numerical control pointing machine, and press after start button, numerical control pointing machine just can process apex point 112 automatically according to the numerical control program weaving, its automaticity is high, machining accuracy is high, is beneficial to the working strength that reduces operating personnel, and is beneficial to the grinding in enormous quantities of apex point 112.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace or improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a pcb board target drill, comprise that drill lip and external diameter are less than the drillstock of described drill lip, the outer surface of described drill lip is provided with spiral chip area, one end of described drill lip is connected with described drillstock, the other end is provided with and is cone shape apex point, it is characterized in that: described drill lip adopts carbide alloy bar to make, described drillstock adopts external diameter to make with the stainless steel bar that described carbide alloy bar external diameter equates, described drill lip is connected on described drillstock by weld tabs or wire welding.
2. pcb board target drill as claimed in claim 1, is characterized in that: the axiality of described drill lip and described drillstock is ± 0.01mm.
3. pcb board target drill as claimed in claim 1 or 2, is characterized in that: the external diameter of described drill lip is between 3.2mm～6.5mm, and the external diameter of described drillstock is 3.175mm.
4. pcb board target drill as claimed in claim 1 or 2, is characterized in that: the point angle degree of described apex point is between 155 °～165 °.
5. pcb board target drill as claimed in claim 1, is characterized in that: on described drillstock and away from one end of described drill lip, be provided with the frustum of a cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739781.7U CN203610741U (en) | 2013-11-20 | 2013-11-20 | Special drill bit for PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739781.7U CN203610741U (en) | 2013-11-20 | 2013-11-20 | Special drill bit for PCB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203610741U true CN203610741U (en) | 2014-05-28 |
Family
ID=50763422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320739781.7U Expired - Lifetime CN203610741U (en) | 2013-11-20 | 2013-11-20 | Special drill bit for PCB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203610741U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646731A (en) * | 2013-11-20 | 2015-05-27 | 深圳市金洲精工科技股份有限公司 | Special drill bit for PCB (printed circuit board) and processing method for special drill bit for PCB |
| CN105312638A (en) * | 2014-09-25 | 2016-02-10 | 深圳市金洲精工科技股份有限公司 | Drill bit special for printed circuit board (PCB) and machining method thereof |
| CN106827038A (en) * | 2016-12-30 | 2017-06-13 | 无锡国宏硬质合金模具刃具有限公司 | A kind of circuit boring PCD drill bits and processing technology |
| CN110125627A (en) * | 2019-06-19 | 2019-08-16 | 廊坊西波尔钻石技术有限公司 | A kind of PCD and hard alloy composite drill head and its manufacturing method |
-
2013
- 2013-11-20 CN CN201320739781.7U patent/CN203610741U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646731A (en) * | 2013-11-20 | 2015-05-27 | 深圳市金洲精工科技股份有限公司 | Special drill bit for PCB (printed circuit board) and processing method for special drill bit for PCB |
| CN105312638A (en) * | 2014-09-25 | 2016-02-10 | 深圳市金洲精工科技股份有限公司 | Drill bit special for printed circuit board (PCB) and machining method thereof |
| CN106827038A (en) * | 2016-12-30 | 2017-06-13 | 无锡国宏硬质合金模具刃具有限公司 | A kind of circuit boring PCD drill bits and processing technology |
| CN110125627A (en) * | 2019-06-19 | 2019-08-16 | 廊坊西波尔钻石技术有限公司 | A kind of PCD and hard alloy composite drill head and its manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203610741U (en) | Special drill bit for PCB | |
| CN102922287B (en) | Special machine tool for machining hub bearing shells | |
| CN104646731A (en) | Special drill bit for PCB (printed circuit board) and processing method for special drill bit for PCB | |
| CN103878545B (en) | A kind of multiaspect porous parts machining technique | |
| CN202344213U (en) | A terminal drilling machine | |
| CN204711261U (en) | Bull puncher | |
| CN206839581U (en) | A kind of three face multistation process units of axle housing | |
| CN109304486A (en) | A kind of novel intelligent numerically controlled lathe | |
| CN203438012U (en) | Novel horizontal machining center with composite gun-drill function | |
| CN101564744B (en) | Split type variable-diameter punch device for removing inner flash in drill stem | |
| CN204262439U (en) | Pcb board target drill | |
| CN207577443U (en) | A kind of multifunctional boring cutter | |
| CN105312638B (en) | Pcb board target drill and its processing method | |
| CN205660394U (en) | Carousel formula automatic weld attacks tooth machine | |
| CN205362796U (en) | Automatic boring grab of economical numerical control lathe | |
| CN200974129Y (en) | Numerical lathe tool carrier drilling clamp | |
| CN201988965U (en) | PCB (Printed Circuit Board) micro drill bit slotting clamp | |
| CN205200627U (en) | Scaling -off chamfer ware | |
| CN208991812U (en) | A kind of puncher fixture with self centering function | |
| CN207494562U (en) | Machining of Shaft-type Parts fixture and the lathe using the fixture | |
| CN219900364U (en) | Multifunctional cutter for machining wheel bolt holes | |
| CN205989079U (en) | A kind of milling case at a milling four sides | |
| CN205380279U (en) | Prevent falling powerful centre gripping handle of a knife of sword | |
| CN208662540U (en) | It is a kind of can Double-side rounding compound tool | |
| CN207723903U (en) | Bent axle wagon drill milling precise locating fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |