CN213368242U - PCB cutter with self-lubricating composite coating - Google Patents
PCB cutter with self-lubricating composite coating Download PDFInfo
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- CN213368242U CN213368242U CN202022682153.2U CN202022682153U CN213368242U CN 213368242 U CN213368242 U CN 213368242U CN 202022682153 U CN202022682153 U CN 202022682153U CN 213368242 U CN213368242 U CN 213368242U
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Abstract
The utility model relates to a PCB cutter with self-lubricating composite coating, including the stalk portion, set up at the cutting part of a tip of stalk portion and form the coating on the cutting part surface, the coating is including forming at the transition coating on cutting part surface, forming superhard coating on the transition coating and forming the self-lubricating coating on superhard coating, and superhard coating is zirconium aluminium silicon carbonitride coating, titanium zirconium silicon carbonitride coating, titanium aluminium silicon carbonitride coating, chromium aluminium silicon carbonitride coating or titanium chromium silicon carbonitride coating. This PCB cutter is through forming transition coating, superhard coating and self-lubricating coating in proper order on the cutting part surface, and the transition coating helps improving superhard coating's adhesive force to two kinds of silicon carbonitride in aluminium, zirconium, titanium, chromium are as superhard coating, have strengthened the cutting part of PCB cutter, and self-lubricating coating then has extremely low coefficient of friction, improves the chip removal performance of PCB cutter when the cutting by this, reduces cutting temperature to improve its life and machining precision.
Description
Technical Field
The utility model relates to a cutter of cutting printed circuit board especially relates to a PCB cutter with self-lubricating composite coating.
Background
A currently known cutting tool for cutting a Printed Circuit Board (PCB) is composed of a shank for being held by a CNC numerical control machine and a cutting edge having a cutting function, and the material composition of the cutting edge is generally tungsten steel. Because the PCB is woven by hard glass fiber, recently, due to the environmental protection requirement of "halogen free", and the purpose of high frequency transmission in the fifth generation communication (5G), ceramic powder (such as magnesium hydroxide, aluminum hydroxide, silicon oxide, etc.) is added into the circuit board glue resin, so that the edge of the tungsten steel cutter is easy to be damaged by impact during cutting, and the cutting resistance is increased due to the inactivation of the edge, and the cutting temperature and the temperature near the edge are greatly increased, as a result of the temperature increase, the resin in the PCB and the edge generate oxidative chemical reaction, the coating and the damaged edge are degraded, so as to generate vicious circle avalanche effect, and finally, the processing precision is sharply reduced, the cutter life is greatly shortened, and even the circuit board is damaged due to cutter breakage.
Disclosure of Invention
The utility model aims to solve the technical problem that to the drawback of current PCB cutter, provide a PCB cutter that has self-lubricating composite coating that coefficient of surface friction is low and long service life, machining precision are high.
For solving the technical problem, the utility model discloses a following technical scheme:
PCB cutter with self-lubricating composite coating, be in including stalk portion, setting the cutting part and the formation of an end of stalk portion are in the coating on cutting part surface, the coating is including being located the self-lubricating coating of cutting part surface, the coating is still including forming the transition coating and the formation on cutting part surface are in superhard coating on the transition coating, self-lubricating coating forms make on the superhard coating is located between transition coating and the self-lubricating coating, superhard coating is zirconium aluminium silicon carbonitride coating, titanium zirconium silicon carbonitride coating, titanium aluminium silicon carbonitride coating, chromium aluminium silicon carbonitride coating or titanium chromium silicon carbonitride coating.
According to some embodiments of the invention, the super-hard coating has a thickness of 200 to 2000 nm, preferably 1500 to 2000 nm.
According to some embodiments of the invention, the transition coating is a zirconium coating, a titanium coating, or a chromium coating.
According to some aspects of the present disclosure, the transition coating has a thickness of 50 to 500 nm, and preferably a thickness of 200 to 500 nm.
According to some aspects of the disclosure, the self-lubricating coating is a diamond-like carbon coating, a chromium nitride coating, a molybdenum disulfide coating, a titanium diboride coating, a chromium aluminum boride coating, or a titanium aluminum boride coating.
According to some aspects of the present disclosure, the self-lubricating coating has a thickness of 10 to 800 nanometers.
According to some embodiments of the invention, the blade is a tungsten steel blade.
According to some implementation aspects of the present invention, the PCB cutter is a PCB milling cutter or a PCB drill bit.
Further, when the PCB cutter is a PCB milling cutter, the shank is a tungsten steel shank; when the PCB cutter is a PCB drill bit, the handle part is a stainless steel handle part.
Further, when the PCB cutter is a PCB milling cutter, the thickness of the self-lubricating coating is 50-800 nanometers; when the PCB cutter is a PCB drill bit, the thickness of the self-lubricating coating is 10-500 nanometers.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model discloses a PCB cutter is through forming transition coating in proper order on the cutting part surface, superhard coating and self-lubricating coating, transition coating helps improving superhard coating's adhesive force, with aluminium, zirconium, titanium, the silicon carbonitride of two in the chromium is as superhard coating, the cutting part of PCB cutter has been reinforceed, self-lubricating coating then has extremely low coefficient of friction, thereby improve the chip removal performance of PCB cutter when the cutting, reduce cutting temperature, thereby improve its life and machining precision, and the coating on this PCB cutter simple structure, the practicality is high.
Drawings
Fig. 1 is an enlarged partial cross-sectional structural view of a blade portion of an OCB tool according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a PCB milling cutter according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a PCB drill according to an embodiment of the present invention;
in the figure: 1. a handle; 2. a blade part; 3. a transitional coating; 4. a superhard coating; 5. and (3) self-lubricating coating.
Detailed Description
The invention is further described below with reference to the drawings in the specification:
referring to fig. 1 to 3, the PCB tool with the self-lubricating composite coating includes a shank 1 and a blade 2 having a cutting function, the blade 2 is disposed at an end of the shank 1, a coating is formed on a surface of the blade 2, the PCB tool may be a PCB milling cutter (as shown in fig. 2) or a PCB drill (as shown in fig. 3), the blade 2 is a tungsten steel blade, and the shank 1 is a tungsten steel or stainless steel shank.
The coating comprises a transition coating 3 formed on the surface of the blade part 2, a superhard coating 4 formed on the transition coating 3 and a self-lubricating coating 5 formed on the superhard coating 4, wherein the transition coating 3 is directly formed on the surface of the blade part 2, the superhard coating 4 is formed and combined on the surface of the transition coating 3, and the self-lubricating coating 5 is formed and combined on the superhard coating 4. The transition coating 3, the superhard coating 4 and the self-lubricating coating 5 jointly form a three-layer composite film coating formed on the surface of the blade part 2.
The transition coating 3 has the function of improving the adhesive force of the superhard coating 4, and the thickness can be 50-500 nanometers. The zirconium (Zr) coating, the titanium (Ti) coating or the chromium (Cr) coating is used as the medium layer of the superhard coating 4 combined on the surface of the tungsten steel blade part 2, has the functions of relaxing the internal stress and increasing the adhesive force, and can achieve the best coating firmness.
The superhard coating 4 is used for strengthening the blade part 2 of the PCB cutter, and the thickness can be 200-2000 nanometers. The use of a zirconium aluminum silicon carbonitride coating, a titanium zirconium silicon carbonitride coating, a titanium aluminum silicon carbonitride coating, a chromium aluminum silicon carbonitride coating or a titanium chromium silicon carbonitride coating as the superhard coating 4 allows the lattice deformation in the microstructure of the material by the incorporation of carbon and nitrogen atoms, and the grain refinement of silicon nitride, to have higher hardness than commonly known two-element hardened layers such as zirconium nitride (ZrN), titanium nitride (TiN) and chromium nitride (CrN).
The self-lubricating coating 5 has the function of forming a coating with a low friction coefficient by using a vacuum coating process, so that chip removal during cutting can be promoted, the cutting temperature is reduced, and the blade part 2 of the PCB cutter is protected. In addition, Diamond Like Carbon (Diamond Like Carbon), chromium nitride (CrN), molybdenum disulfide (MoS)2) Titanium diboride (TiB)2) Chromium aluminum boride (CrAlB) or titanium aluminum boride (TiAlB) is used as the self-lubricating coating 5, so that the friction coefficient of the tungsten steel surface can be reduced, the cutting temperature is reduced, and the aims of prolonging the service life of the cutter and improving the machining precision are fulfilled.
In a specific embodiment, referring to the PCB milling cutter of fig. 2, the milling cutter has a length of 38mm, and has a shank 1 with a diameter of 3.175mm and made of tungsten steel and a blade 2 of tungsten steel with a diameter of 1.2mm disposed at one end of the shank 1, the method of forming the coating on the blade 2 may employ the following specific steps:
before the coating is formed on the surface of the blade part 2, the PCB milling cutter is previously subjected to ultrasonic equipment to remove surface oil stains in cleaning liquid, then the water attached to the PCB milling cutter is dried, then the surface of the PCB milling cutter is cleaned by plasma (plasma) in vacuum coating equipment, and the surface of the blade part 2 of the PCB milling cutter is coated in a cathode arc deposition (cathode arc deposition) mode.
The specific coating mode is as follows: firstly, a transition coating 3 is coated on the blade part 2 by a cathodic arc deposition technology, the used target material can be zirconium (Zr), titanium (Ti) or chromium (Cr) and other metals, and vacuum coating is carried out under the environment that the vacuum degree is 0.2Pa and the temperature is 450 ℃, so that a zirconium metal layer, a titanium metal layer or a chromium metal layer is formed on the surface of the blade part 2 to be used as the transition coating 3. The thickness of the transition coating 3 can be 50-500 nm, for example, a chromium (Cr) coating with a thickness of 400 nm.
After the surface of the blade part 2 is coated with the transition coating 3, the surface of the transition coating 3 is coated with the superhard coating 4 by the same cathodic arc deposition technology, the used target material can be zirconium aluminum silicon (ZrAlSi), titanium zirconium silicon (TiZrSi), titanium aluminum silicon (TiAlSi), chromium aluminum silicon (CrAlSi) or titanium chromium silicon (TiCrSi) and other alloys, and vacuum coating is carried out in the environment of the vacuum degree of 0.2Pa and the temperature of 450 ℃ so as to form the superhard coating 4 on the surface of the transition coating 3. The superhard coating 4 may have a thickness of 200 to 2000 nm, for example, a chromium aluminum silicon carbon nitride (CrAlSiCN) coating having a thickness of 1800 nm and a Vickers (Vickers's, 10g loading) hardness of Hv 4200. The transition coating 3 is used as a medium for bonding the superhard coating 4 on the surface of the blade part 2, so that the optimal coating firmness can be achieved.
After the superhard coating 4 is coated on the surface of the transition coating 3, the self-lubricating coating 5 is coated on the surface of the superhard coating 4 by the same cathodic arc deposition technology, and the used target materials can be graphite, chromium and molybdenum disulfide (MoS)2) Titanium diboride (TiB)2) Chromium aluminum boride (CrAlB) or titanium aluminum boride (TiAB), and vacuum coating is carried out under the environment that the vacuum degree is 0.2Pa and the temperature is 450 ℃ so as to form a self-lubricating coating 5 on the surface of the superhard coating 4. The thickness of the self-lubricating coating 5 can be 50-800 nm, for example, the self-lubricating coating can be a chromium nitride (CrN) coating with the thickness of 400 nm.
In the embodiment, the transition coating 3, the superhard coating 4 and the self-lubricating coating 5 form the self-lubricating three-layer composite film coating formed on the surface of the blade part 2 of the PCB milling cutter, so that the cutting life of the PCB milling cutter in the embodiment can reach 2.5 times that of the uncoated milling cutter.
In another embodiment, referring to the PCB drill of fig. 3, the drill has a length of 38mm, and has a shank 1 with a diameter of 3.175mm and made of stainless steel, and a tungsten steel blade 2 with a diameter of 0.15mm disposed at one end of the shank 1, the method of forming the coating on the blade 2 may employ the following steps:
before the coating is formed on the surface of the blade part 2, firstly, removing oil stain on the surface in cleaning liquid by ultrasonic equipment, then drying the water attached to the PCB drill bit, then cleaning the surface of the PCB drill bit by plasma (plasma) in vacuum coating equipment, and coating the surface of the blade part 2 of the PCB drill bit in a magnetron sputtering deposition (magnetron sputtering deposition) mode.
The specific coating method comprises the following steps: firstly, a transition coating 3 is coated on the blade part 2 by a magnetron sputtering deposition technology, a used target material can be zirconium (Zr), titanium (Ti) or chromium (Cr), and the like, and vacuum coating is carried out under the environment that the vacuum degree is 0.2Pa and the temperature is 450 ℃, so that a zirconium metal layer, a titanium metal layer or a chromium metal layer is formed on the surface of the blade part 2 to be used as the transition coating 3. The thickness of the transition coating 3 can be 50-500 nm, for example, a titanium (Ti) metal coating with a thickness of 300 nm.
After the surface of the blade part 2 is coated with the transition coating 3, the same magnetron sputtering deposition technology is used for coating the superhard coating 4 on the surface of the transition coating 3, the used target material can be zirconium aluminum silicon (ZrAlSi), titanium zirconium silicon (TiZrSi), titanium aluminum silicon (TiAlSi), chromium aluminum silicon (CrAlSi) or titanium chromium silicon (TiCrSi) and other alloys, and vacuum coating is carried out under the environment that the vacuum degree is 1.3Pa and the temperature is below 350 ℃, so that the superhard coating 4 is formed on the surface of the transition coating 3. The super-hard coating 4 may have a thickness of 200 to 2000 nm, and may be, for example, a 900 nm thick titanium aluminum silicon carbon nitride (TiAlSiCN) coating having a Vicker's (10 g load) hardness of Hv 4100. In this embodiment, the transition coating 3 is used as a medium for bonding the superhard coating 4 to the surface of the blade 2, so that the optimal coating firmness can be achieved.
After the super-hard coating 4 is coated on the surface of the transition coating 3, the self-lubricating coating 5 is coated on the surface of the super-hard coating 4 by the same magnetron sputtering deposition technology, and the used target materials can be graphite, chromium and molybdenum disulfide (MoS)2) Titanium diboride (TiB)2) Chromium aluminum boride (CrAlB) or titanium aluminum boride (TiAB), and vacuum coating is carried out under the environment that the vacuum degree is 1.3Pa and the temperature is below 350 ℃ so as to form a self-lubricating coating 5 on the surface of the superhard coating 4. The self-lubricating coating 5 may have a thickness of 10-500 nm, such as 300 nm of Diamond-like carbon (Diamond L)ike Carbon, DLC).
In the embodiment, the transition coating 3, the superhard coating 4 and the self-lubricating coating 5 form a three-layer composite film coating formed on the surface of the blade part 2 of the PCB drill bit, so that the drilling number of the PCB drill bit in the embodiment can reach 3 times of that of the uncoated drill bit.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. PCB cutter with self-lubricating composite coating, be in including stalk portion, setting the cutting part of an end portion of stalk portion and formation are in the coating on cutting part surface, the coating is including being located the self-lubricating coating of cutting part surface, its characterized in that: the coating still including forming the transition coating on cutting edge surface and forming superhard coating on the transition coating, self-lubricating coating forms make on the superhard coating is located between transition coating and the self-lubricating coating, superhard coating is zirconium aluminium silicon carbonitride coating, titanium zirconium silicon carbonitride coating, titanium aluminium silicon carbonitride coating, chromium aluminium silicon carbonitride coating or titanium chromium silicon carbonitride coating.
2. The PCB cutter with self-lubricating composite coating of claim 1, wherein: the thickness of the super-hard coating is 200-2000 nm.
3. The PCB cutter with self-lubricating composite coating of claim 1, wherein: the transition coating is a zirconium coating, a titanium coating or a chromium coating.
4. The PCB cutter with self-lubricating composite coating of claim 3, wherein: the thickness of the transition coating is 50-500 nanometers.
5. The PCB cutter with self-lubricating composite coating of claim 1, wherein: the self-lubricating coating is a diamond-like carbon coating, a chromium nitride coating, a molybdenum disulfide coating, a titanium diboride coating, a chromium boride aluminum coating or a titanium boride aluminum coating.
6. The PCB cutter with self-lubricating composite coating of claim 5, wherein: the thickness of the self-lubricating coating is 10-800 nanometers.
7. The PCB cutter with self-lubricating composite coating of claim 1, wherein: the blade part is a tungsten steel blade part.
8. The PCB cutter with self-lubricating composite coating of any one of claims 1 to 7, wherein: the PCB cutter is a PCB milling cutter or a PCB drill bit.
9. The PCB cutter with self-lubricating composite coating of claim 8, wherein: when the PCB cutter is a PCB milling cutter, the handle is a tungsten steel handle; when the PCB cutter is a PCB drill bit, the handle part is a stainless steel handle part.
10. The PCB cutter with self-lubricating composite coating of claim 8, wherein: when the PCB cutter is a PCB milling cutter, the thickness of the self-lubricating coating is 50-800 nanometers; when the PCB cutter is a PCB drill bit, the thickness of the self-lubricating coating is 10-500 nanometers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022682153.2U CN213368242U (en) | 2020-11-19 | 2020-11-19 | PCB cutter with self-lubricating composite coating |
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| CN202022682153.2U CN213368242U (en) | 2020-11-19 | 2020-11-19 | PCB cutter with self-lubricating composite coating |
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| CN213368242U true CN213368242U (en) | 2021-06-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118407020A (en) * | 2024-07-02 | 2024-07-30 | 成都中云世纪科技有限责任公司 | Preparation method of wear-resistant self-lubricating coating for inner hole of undercarriage of aircraft |
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2020
- 2020-11-19 CN CN202022682153.2U patent/CN213368242U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118407020A (en) * | 2024-07-02 | 2024-07-30 | 成都中云世纪科技有限责任公司 | Preparation method of wear-resistant self-lubricating coating for inner hole of undercarriage of aircraft |
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