CN208930432U - Drilling machine - Google Patents
Drilling machine Download PDFInfo
- Publication number
- CN208930432U CN208930432U CN201821318423.8U CN201821318423U CN208930432U CN 208930432 U CN208930432 U CN 208930432U CN 201821318423 U CN201821318423 U CN 201821318423U CN 208930432 U CN208930432 U CN 208930432U
- Authority
- CN
- China
- Prior art keywords
- drilling machine
- drillstock
- drill
- insulating layer
- drill bit
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of drilling machine, and for the drilling machine for drilling to circuit board, the circuit board includes substrate and the first conductive layer for being covered in the substrate surface;The drilling machine includes: motor, and the motor includes output shaft;Relay control device, the relay control device and the electrical connection of motor, and control the output shaft rotation or stop;Drill bit, the drill bit are fixedly connected with the output shaft, and the drill bit is equipped with apex point away from the end of the output shaft;Insulating layer, the insulating layer cover the surface of the drill bit, and appear the apex point.Technical solutions of the utility model can make to be not in feed error in the case where bit wear, still can accurate processing circuit board.
Description
Technical field
The utility model relates to circuit board production techniques field, in particular to a kind of drilling machine.
Background technique
Currently, the end of existing circuit board drill is coated with conductive coating, such setting allows bit contact to circuit board
It behind surface, is formed into a loop in drill bit, to trigger control gun drilling program.After controlling the triggering of gun drilling program, drill bit is machined to drill
After the drilling depth of program, stop drilling.But since drill bit end is prone to wear, so as to cause the conductive coating of bit part
It falls off, the system stability of circuit board drill is caused to reduce, so that there is feed error in drill bit, it can not accurate processing circuit board.
Utility model content
The main purpose of the utility model is to provide a kind of drilling machine, it is intended to make be not in the case where bit wear into
Knife error, still can accurate processing circuit board.
To achieve the above object, drilling machine provided by the utility model, for drilling to circuit board, the circuit board
Including substrate and the first conductive layer for being covered in the substrate surface;The drilling machine includes:
Motor, the motor include output shaft;
Relay control device, the relay control device and the electrical connection of motor, and control the output shaft rotation
Or stop;
Drill bit, the drill bit are fixedly connected with the output shaft, and the drill bit is equipped with away from the end of the output shaft and bores
Point;
Insulating layer, the insulating layer cover the surface of the drill bit, and appear the apex point.
Optionally, the drill bit includes drill lip and the drillstock that connect with the drill lip, and it is remote that the apex point is located at the drill lip
End from the drillstock;
The insulating layer covers the part of the drill lip and the part of the drillstock;
Alternatively, the insulating layer covers the part of the drill lip;
Alternatively, the insulating layer covers the part of the drillstock.
Optionally, the thickness h of the insulating layer are as follows: 0.001mm≤h≤0.5mm.
Optionally, the insulating layer passes through vapor deposition molding;
Alternatively, the material of the insulating layer is insulating paint.
Optionally, the outer surface of the drill lip be equipped with spiral chip space, one end of the chip space with it is described
Apex point connection.
Optionally, the maximum gauge for the outer profile that the drill lip cross section is formed is greater than the outer of drillstock cross section formation
Outline diameter.
Optionally, the drill lip and the drillstock are welded and fixed;And/or the material of the drill lip is hard alloy.
Optionally, the circuit board further includes the second conductive layer and third conductive layer, the second conductive layer tabula setting
Inside the substrate, first conductive layer and second conductive layer are electrically connected by the third conductive layer;
The side of the drill bit abuts the third conductive layer.
Optionally, the concentricity of the drill lip and the drillstock is ± 0.01mm.
Optionally, the drillstock is additionally provided with installation frustum away from the end of the drill lip, and the installation frustum is around described
Drillstock setting.
The technical solution of the utility model makes insulating layer appear apex point by the way that insulating layer to be covered to the surface of drill bit, with
And the output shaft of motor is connected to by relay control device control, when needing to carry out drilling processing to circuit board, to circuit
First conductive layer of plate is powered, and apex point abuts the first conductive layer, since apex point is not covered by insulating layer, so drill bit
Inside is connected with the circuit of circuit board, and relay control device controls drill bit feed after receiving electric signal, so that drill bit is to circuit
Plate carries out drilling processing, and when certain distance is arrived in feed, insulating layer completely cuts off drill bit and the first conductive layer, the inside of drill bit with it is electric
The circuit of road plate disconnects, and control drill bit stops feed after relay control device does not receive electric signal, to complete to circuit board
Processing.Since apex point does not have applying conductive coatings, so even if high-precision still may be implemented in drill bit in case of wearing
Back drill.It, still can be in this way, the technical solution of the utility model can make to be not in feed error in the case where bit wear
Accurate processing circuit board.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural representation of an embodiment of the circuit board that the utility model drilling machining has the first conductive layer
Figure;
Fig. 2 is an embodiment of the circuit board that the utility model drilling machining has the first conductive layer and the second conductive layer
Structural schematic diagram;
Fig. 3 is the structural schematic diagram of one embodiment of drill bit of the utility model drilling machine.
Drawing reference numeral explanation:
Label | Title | Label | Title |
100 | Drilling machine | 531 | Frustum is installed |
10 | Motor | 70 | Insulating layer |
30 | Relay control device | 200 | Circuit board |
50 | Drill bit | 210 | Substrate |
51 | Drill lip | 230 | Conductor layer No.1 |
511 | Apex point | 250 | Second conductive layer |
513 | Chip space | 270 | Third conductive layer |
53 | Drillstock |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not in the requires of the utility model
Protection scope within.
The utility model proposes a kind of drilling machines 100.
Referring to figs. 1 to Fig. 3, the drilling machine 100 that technical solutions of the utility model propose is for boring circuit board 200
Hole, the circuit board 200 include substrate 210 and the first conductive layer 230 for being covered in 210 surface of substrate;And/or it is described
Circuit board 200 further includes the second conductive layer 250, and 250 tabula of the second conductive layer is set to inside the substrate 210, described
First conductive layer 230 is electrically connected with second conductive layer 250, and the drilling machine 100 includes:
Motor 10, the motor 10 include output shaft;
Relay control device 30, the relay control device 30 is electrically connected with the motor 10, and controls the output
Axis rotation stops;
Drill bit 50, the drill bit 50 are fixedly connected with the output shaft, and the drill bit 50 deviates from the end of the output shaft
Equipped with apex point 511;
Insulating layer 70, the insulating layer 70 cover the surface of the drill bit 50, and appear the apex point 511.
The technical solution of the utility model makes insulating layer 70 appear brill by the way that insulating layer 70 to be covered to the surface of drill bit 50
Point 511, and controlled by relay control device 30 and be connected to the output shaft of motor 10, when needing to bore to circuit board 200
It when hole machined, is powered to the first conductive layer 230 of circuit board 200, apex point 511 abuts the first conductive layer 230, due to apex point
511 are not covered by insulating layer 70, so the inside of drill bit 50 is connected with the circuit of circuit board 200, relay control device 30 is connect
50 feed of drill bit is controlled after receiving electric signal, so that drill bit 50 carries out drilling processing to circuit board 200, when feed to certain distance
When, insulating layer 70 completely cuts off drill bit 50 and the first conductive layer 230, and the inside of drill bit 50 and the circuit of circuit board 200 disconnect, relay
Control drill bit 50 stops feed after control device 30 does not receive electric signal, to complete the processing to circuit board 200.Due to boring
Point 511 does not have applying conductive coatings, so even if high-precision back drill still may be implemented in drill bit 50 in case of wearing.Such as
This, the technical solution of the utility model can make drill bit 50 wear in the case where be not in feed error, still can be accurate
Processing circuit board 200.
In the embodiment of the application, which can be relay, and relay can be preferably real
Now to the control of circuit.The substrate 210 can be pcb board body, and first conductive layer 230 and the second conductive layer 250 can be copper
Layer, to realize preferable conductive effect.Apex point 511 on drill bit 50 mainly serves for ensuring the acuteness of drill lip 51, so as to
The drilling efficiency of pcb board target drill 50 when ensuring to drill.
Referring to Fig. 3, in the embodiment of the application, the drill bit 50 includes drill lip 51 and connect with the drill lip 51
Drillstock 53, the apex point 511 are located at end of the drill lip 51 far from the drillstock 53;
The insulating layer 70 covers the part of the drill lip 51 and the part of the drillstock 53;
Or the insulating layer 70 covers the part of the drill lip 51;
Or the insulating layer 70 covers the part of the drillstock 53.
Setting drill lip 51 convenient for drilling to circuit board 200, be convenient for the defeated of drill lip 51 and motor 10 by setting drillstock 53
Axis connection out, consequently facilitating drilling.It is understood that the material of the drill lip 51 can use hard alloy, hard alloy
Hardness and strength are higher, and such setting can reduce the problem of drill lip 51 damages in boring procedure, and are conducive to guarantee to drill out
Hole inner wall smooth.The material of the drillstock 53 can be made of stainless steel, and drillstock 53 is mainly used for clamping for fixture, thus real
Now to the clamping position of drill lip 51, stainless steel is selected convenient for providing suitable intensity and hardness, realizes the preferable connection of drill lip 51,
And reduce the cost of manufacture of drillstock 53.
In the embodiment of the application, drill lip 51 and drillstock 53, specifically can be using soldering, prickers using being welded and fixed
Weldering is to make solder using metal material more low-melting than base material, and weldment and solder heat are arrived higher than brazing filler metal fusing point, lower than base material
Fusion temperature soaks base material using liquid solder, fills play movement and realizes the welding of connection weldment with base material phase counterdiffusion
Mode.In this way, the blank and brill of drillstock 53 can be made after the blank of removal drillstock 53 and the blank outer round surface crator of drill lip 51
Interconnected relationship is still maintained between the blank of sword 51, to can guarantee the connection reliability between drillstock 53 and drill lip 51.
And the concentricity of the drill lip 51 and the drillstock 53 is ± 0.01mm.So set, being conducive to guarantee drill bit 50
Drilling quality.
Referring to Fig. 2, in the embodiment of the application, the circuit board 200 further includes that the second conductive layer 250 and third are led
Electric layer 270,250 tabula of the second conductive layer are set to inside the substrate 210, and the third conductive layer 270 is by described
One conductive layer 230 is electrically connected with second conductive layer 250;
The side of the drill bit abuts the third conductive layer 270.
When the drilling depth of needs is deeper, setting is located at the second conductive layer 250 inside substrate 210, and makes second to lead
Electric layer 250 and the first conductive layer 230 are electrically connected, and the position that drill bit 50 drills is the first conductive layer 230 and the second conductive layer 250
(i.e. at third conductive layer 270, which cylindrical can be arranged, convenient for drill bit for the position being electrically connected to each other
50 positioning drilling), when drill-through second conductive layer 250 of drill bit 50, insulating layer 70 is isolated by drill bit 50 with the second conductive layer 250
When, which controls drill bit 50 and stops feed.
In the embodiment of the application, insulating layer 70 can cover drill lip 51, so when drill bit 50 pierces circuit board 200
Afterwards, it is drilled into shallower position, insulating layer 70 is to disconnect the circuit of drill bit 50 and the first conductive layer 230, the second conductive layer 250,
Stop drilling to which relay control device 30 controls drill bit 50;Or insulating layer 70 can cover drillstock 53, so work as drill bit 50
After piercing circuit board 200, it is drilled into deep place, insulating layer 70 is i.e. by drill bit 50 and the first conductive layer 230, the second conductive layer
250 circuit disconnects, so that relay control device 30, which controls drill bit 50, stops drilling;Or insulating layer 70 can cover drill lip 51
With the part of drillstock 53, that is, insulating layer 70 simultaneously cover drill lip 51 and drilling, so after drill bit 50 pierces circuit board 200,
It is drilled into not deep not shallow position, insulating layer 70 breaks the circuit of drill bit 50 and the first conductive layer 230, the second conductive layer 250
It opens, so that relay control device 30, which controls drill bit 50, stops drilling.
It is understood that insulating layer 70 is covered in the length of drill lip 51, less than the total length of drill lip 51 itself, and absolutely
Edge layer 70 is covered in the length of drillstock 53, less than the total length of drillstock 53, in this way, convenient for reducing cost, and be easy to use.
In the embodiment of the application, the thickness h of the insulating layer 70 are as follows: 0.001mm≤h≤0.5mm.If insulation
The thickness design of layer 70 obtains too thin, then is easy to cause in use, cannot preferably realize drill bit 50 and the first conductive layer
230 or second the isolation of conductive layer 250 be easy to cause the volume of drill bit 50 if the thickness design of insulating layer 70 obtains too thick
Larger, material cost is higher, and influences the precision of drilling.Specifically, the thickness of insulating layer 70 can for 0.003mm,
0.005mm、0.007mm、0.009mm、0.01mm、0.03mm、0.05mm、0.08mm、0.09mm、0.1mm、0.3mm、0.4mm
Deng.
In the embodiment of the application, which can divide physical vapour deposition (PVD) by the way of vapor deposition
(PVD) and chemical vapor deposition (CVD) compound physical chemistry vapor deposition (PCVD), has been developed again recently.Physical vapor is heavy
Product is to utilize the methods of vacuum evaporation, ion sputtering, ion plating deposition film forming;Chemical vapor deposition is then to utilize coating material
Volatile compound gas decompose or chemical combination reaction product and deposit film forming;Physical chemistry vapor deposition is adding of plasma
Learn vapor deposition.It in this way can be with metal-coated membrane, alloy film, ceramic membrane or diamond film etc..Vapor deposition not only may be used
To improve the service life of cutter, mold, parts, but also product is made to obtain graceful appearance colour, insulating layer 70 can be made
The isolation of drill bit 50 and the first conductive layer 230 or the second conductive layer 250 is realized well.
In another embodiment of the application, the material of the insulating layer 70 is insulating paint.Good chemical stability,
Ageing-resistant, corrosion resistance, good in oxidation resistance, without flash-point, burning point, hardness is high, can preferably realize drill bit 50 and the first conductive layer
230 or second conductive layer 250 isolation.
Referring to Fig. 3, in the embodiment of the application, the outer surface of the drill lip 51 is equipped with spiral chip space
513, one end of the chip space 513 is connected to the apex point 511.The setting of chip space 513 may make and be dug in boring procedure
The bits end fallen can be easily discharged out of the hole out of chip space, and bits end is thus prevented to be deposited in the location hole or component peace of circuit board 200
The situation generation that is unsmooth, scratching location hole inner wall or component inner wall of the hole installing that drills is caused in dress hole.
Further, the maximum gauge for the outer profile that 51 cross section of drill lip is formed is greater than the 53 cross section shape of drillstock
At outer profile diameter.When the hole depth of drilling is greater than the length of drill lip 51, in boring procedure, drill lip 51 can be fully sunk in electricity
In the location hole or component mounting hole of road plate 200, at this point, since the outer diameter of drillstock 53 is arranged smaller than the outer diameter of drill lip 51,
Therefore the bits end dug up that drills can be discharged on drillstock 53 out of chip space 513, and location hole and component peace are discharged from drillstock 53
Fill hole outside, thus prevent bits end be deposited in location hole or component mounting hole cause to drill it is unsmooth, scratch location hole inner wall
Or the situation of component inner wall of the hole installing occurs.
Referring to Fig. 3, further, the drillstock 53 is additionally provided with installation frustum 531 away from the end of the drill lip 51, described
Frustum 531 is installed to be arranged around the drillstock 53.On the one hand the setting of installation frustum 531 can reach the purpose of removal sharp edge, separately
It on the one hand can be convenient for the installation of the insertion on each fixture of drillstock 53.The present embodiment, installation frustum 531 are a part of drillstock 53,
In concrete application, installation frustum 531 can be formed by grinding machine, can also be formed by lathe turning.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (10)
1. a kind of drilling machine, for drilling to circuit board, the circuit board includes substrate and is covered in the substrate surface
The first conductive layer;And/or the circuit board further includes the second conductive layer, the second conductive layer tabula is set to the base
Intralamellar part, first conductive layer and second conductive layer are electrically connected, which is characterized in that the drilling machine includes:
Motor, the motor include output shaft;
Relay control device, the relay control device and the electrical connection of motor, and control the output shaft rotation or stop
Only;
Drill bit, the drill bit are fixedly connected with the output shaft, and the drill bit is equipped with apex point away from the end of the output shaft;
Insulating layer, the insulating layer cover the surface of the drill bit, and appear the apex point.
2. drilling machine as described in claim 1, which is characterized in that the drill bit includes drill lip and the brill that connect with the drill lip
Handle, the apex point are located at end of the drill lip far from the drillstock;
The insulating layer covers the part of the drill lip and the part of the drillstock;
Or the insulating layer covers the part of the drill lip;
Or the insulating layer covers the part of the drillstock.
3. drilling machine as claimed in claim 2, which is characterized in that the thickness h of the insulating layer are as follows: 0.001mm≤h≤
0.5mm。
4. drilling machine as claimed in claim 2 or claim 3, which is characterized in that the insulating layer is vapor deposition layer;
Or the material of the insulating layer is insulating paint.
5. drilling machine as claimed in claim 4, which is characterized in that the outer surface of the drill lip is equipped with spiral chip removal
Slot, one end of the chip space are connected to the apex point.
6. drilling machine as claimed in claim 4, which is characterized in that the maximum gauge for the outer profile that the drill lip cross section is formed
The outer profile diameter formed greater than the drillstock cross section.
7. drilling machine as claimed in claim 4, which is characterized in that the drill lip and the drillstock are welded and fixed.
8. drilling machine as claimed in claim 7, which is characterized in that the material of the drill lip is hard alloy.
9. drilling machine as claimed in claim 4, which is characterized in that the concentricity of the drill lip and the drillstock be ±
0.01mm。
10. drilling machine as claimed in claim 4, which is characterized in that the drillstock is additionally provided with peace away from the end of the drill lip
Frustum is filled, the installation frustum is arranged around the drillstock.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201821318423.8U CN208930432U (en) | 2018-08-15 | 2018-08-15 | Drilling machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201821318423.8U CN208930432U (en) | 2018-08-15 | 2018-08-15 | Drilling machine |
Publications (1)
Publication Number | Publication Date |
---|---|
CN208930432U true CN208930432U (en) | 2019-06-04 |
Family
ID=66717854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201821318423.8U Active CN208930432U (en) | 2018-08-15 | 2018-08-15 | Drilling machine |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN208930432U (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112372739A (en) * | 2020-10-22 | 2021-02-19 | 广东鼎泰高科技术股份有限公司 | Using method and preparation method of drill bit |
CN113021514A (en) * | 2021-05-28 | 2021-06-25 | 苏州维嘉科技股份有限公司 | Machining device, method for improving machining quality of machining device, and machining equipment |
CN113286428A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Back drilling depth control method |
CN113286449A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Back drilling depth control method with fool-proof function |
CN113286429A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Back drill manufacturing method |
CN113276213A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Composite drill |
CN113286430A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Method for improving drilling depth precision |
CN113286427A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Back drilling machining method |
TWI765827B (en) * | 2020-09-28 | 2022-05-21 | 大陸商廣東鼎泰高科技術股份有限公司 | Back drilling tool and preparation method thereof |
-
2018
- 2018-08-15 CN CN201821318423.8U patent/CN208930432U/en active Active
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113286428A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Back drilling depth control method |
CN113286449A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Back drilling depth control method with fool-proof function |
CN113286429A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Back drill manufacturing method |
CN113276213A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Composite drill |
CN113286430A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Method for improving drilling depth precision |
CN113286427A (en) * | 2020-07-31 | 2021-08-20 | 生益电子股份有限公司 | Back drilling machining method |
TWI765827B (en) * | 2020-09-28 | 2022-05-21 | 大陸商廣東鼎泰高科技術股份有限公司 | Back drilling tool and preparation method thereof |
CN112372739A (en) * | 2020-10-22 | 2021-02-19 | 广东鼎泰高科技术股份有限公司 | Using method and preparation method of drill bit |
CN112372739B (en) * | 2020-10-22 | 2022-04-05 | 广东鼎泰高科技术股份有限公司 | Using method and preparation method of drill bit |
WO2022082898A1 (en) * | 2020-10-22 | 2022-04-28 | 广东鼎泰高科技术股份有限公司 | Method of use of drill bit and preparation method therefor |
CN113021514A (en) * | 2021-05-28 | 2021-06-25 | 苏州维嘉科技股份有限公司 | Machining device, method for improving machining quality of machining device, and machining equipment |
CN113021514B (en) * | 2021-05-28 | 2021-09-14 | 苏州维嘉科技股份有限公司 | Machining device, method for improving machining quality of machining device, and machining equipment |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN208930432U (en) | Drilling machine | |
US9057242B2 (en) | Method of controlling corrosion rate in downhole article, and downhole article having controlled corrosion rate | |
CA2906012C (en) | One-piece air data probe | |
EP2058073B1 (en) | Drilling tool | |
CN108406018A (en) | Take into account the electrolysis milling machining tool cathode and electrolysis milling method of efficiency and precision | |
CN204457761U (en) | With brill side direction resistivity logging tool electrode system structure | |
CN208940261U (en) | Circuit board and circuit boring device | |
CN106856527A (en) | Shell for terminal and preparation method thereof, terminal | |
CN102407410B (en) | Resistance welding tube and manufacturing method and application thereof | |
CN104453883A (en) | Electrode system structure for lateral resistivity logging while drilling instrument and method for manufacturing electrode system structure | |
CN108213624A (en) | A kind of electric-spark drilling and the tool and method of reaming Compound Machining elongated hole | |
CN107425321A (en) | Electrical contact element | |
CN106583803A (en) | Diamond coating cutter and manufacturing method thereof | |
CN105772880A (en) | Method for high-speed electrosparking of abrasive material water nozzle inner hole | |
US11866826B2 (en) | Plasma coating lance for internal coatings | |
CN102554303A (en) | Blind hole machining method for pre-bonded metal substrate | |
CN112140229B (en) | Back drilling tool and preparation method thereof | |
CN110149770A (en) | The manufacturing method and multilayer printed circuit board of multilayer printed circuit board | |
CN210059913U (en) | Cutter with hard coating | |
CN202780108U (en) | Zinc-plated electrode wire | |
CN207276698U (en) | A kind of heat safe titanium alloy milling cutter special-purpose coat structure | |
CN112372739B (en) | Using method and preparation method of drill bit | |
CN220407541U (en) | Spot welding cutter with protective layer | |
CN214127009U (en) | Heating device for heating without combustion | |
CN216721390U (en) | High-strength shell |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |