CN114113701A - High-frequency micro-fine test fixture and manufacturing method thereof - Google Patents
High-frequency micro-fine test fixture and manufacturing method thereof Download PDFInfo
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- CN114113701A CN114113701A CN202111347882.5A CN202111347882A CN114113701A CN 114113701 A CN114113701 A CN 114113701A CN 202111347882 A CN202111347882 A CN 202111347882A CN 114113701 A CN114113701 A CN 114113701A
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- micro
- jig
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- fine
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 36
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 claims abstract description 24
- 239000007769 metal material Substances 0.000 claims abstract description 9
- 239000011265 semifinished product Substances 0.000 claims description 19
- 239000000047 product Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 241001391944 Commicarpus scandens Species 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The invention relates to a high-frequency micro-fine test fixture which comprises a guide frame, a fixture body, a spring needle and a fixture cover plate, wherein the fixture cover plate covers one side of the fixture body, the guide frame is clamped at the other side of the fixture body, a plurality of micro-fine needle holes are correspondingly formed in the fixture body and the fixture cover plate, micro-arc oxidation insulating coatings are coated on the inner walls of the micro-fine needle holes, two ends of the spring needle are respectively inserted into the micro-fine needle holes in the fixture body and the fixture cover plate, and are insulated from the fixture body and the fixture cover plate through the micro-arc oxidation insulating coatings. The high-frequency fine test fixture is made of metal materials, so that the requirement of high-frequency transmission is met; the inner walls of the micro pinholes on the jig body and the jig cover plate are coated with the insulating coating through micro-arc oxidation, so that the manufacturing cost and the production period are greatly reduced; the thickness of the coating can reach less than or equal to 10 mu m, so that the distance between the fine pinholes is less than or equal to 0.35mm, the diameter of the spring needle is relatively thicker, the spring needle is not easy to break, and the service life is long.
Description
Technical Field
The invention relates to the field of high-frequency micro-fine test jigs, in particular to a high-frequency micro-fine test jig and a manufacturing method thereof.
Background
The high frequency test fixture in the existing market is divided into two types according to the material: a test fixture made of plastic and a test fixture made of metal.
The test fixture body made of plastic is a plastic insulating part, but the inductance and the capacitance of the probe are higher, so that the loss is large in the transmission of high-frequency signals, and the transmission requirement of higher frequency cannot be met.
Metal material's test fixture is with metal material as the main part, metal main part is equipped with the pinhole, insert composite insulator between spring needle and the metal main part and realize the insulation between spring needle and the metal main part, though can satisfy the performance, but the manufacturing procedure is loaded down with trivial details, processing cycle is very long, and insulating material's thickness must 0.08mm at least, be restricted on the micropore interval, can't accomplish the hole interval below 0.35mm, the insulating layer of high thickness leads to the diameter of spring needle thinner, influences the life-span of spring needle.
Disclosure of Invention
The invention aims to provide a high-frequency micro-fine test fixture and a manufacturing method thereof, which are used for solving the problems that a plastic test fixture in the prior art cannot meet the requirements of high-frequency transmission and complex processing of a metal test fixture, and the service life of a spring needle is short.
The invention provides a high-frequency micro-fine test fixture which comprises a guide frame, a fixture body, a spring needle and a fixture cover plate, wherein the guide frame, the fixture body and the fixture cover plate are all made of metal materials, the fixture cover plate covers one side of the fixture body, the guide frame is clamped at the other side of the fixture body, a plurality of micro-fine needle holes are correspondingly arranged on the fixture body and the fixture cover plate, micro-arc oxidation insulating coatings are coated on the inner walls of the micro-fine needle holes, and two ends of the spring needle are respectively inserted into the micro-fine needle holes in the fixture body and the fixture cover plate and are insulated from the fixture body and the fixture cover plate through the micro-arc oxidation insulating coatings.
Further, the thickness of the micro-arc oxidation insulating coating is 8-20 μm.
Furthermore, all the micro pinholes are arranged in an array, and the hole pitch is less than or equal to 0.35 mm.
The invention also provides a manufacturing method of the high-frequency fine test fixture, which comprises the following steps:
(1) processing a semi-finished product of the jig body containing the micro pinholes, a semi-finished product of the jig cover plate containing the micro pinholes and a semi-finished product of the guide frame;
(2) coating a micro-arc oxidation insulating coating on the semi-finished jig body and the semi-finished jig cover plate processed in the step (1) by a micro-arc oxidation process, so that the inner walls of the micro pinholes of the semi-finished jig body and the semi-finished jig cover plate are coated with the insulating coating;
(3) processing the coated semi-finished jig body and the coated semi-finished jig cover plate into finished products again;
(4) inserting the spring pin into the jig body, then closing the jig cover plate, and inserting one end of the spring pin into the micro pinhole in the jig body and inserting the other end of the spring pin into the micro pinhole of the jig cover plate;
(5) coating a coating on the surface of the guide frame semi-finished product;
(6) processing the coated semi-finished guide frame into a finished product;
(7) the guide frame is fixed on the jig body.
Further, the thickness of the micro-arc oxidation insulating coating in the step (2) is 8-20 μm.
The technical scheme of the invention has the beneficial effects that:
the high-frequency fine test fixture is made of metal materials, so that the requirement of high-frequency transmission is met; the inner walls of the micro pinholes on the jig body and the jig cover plate are coated with the insulating coating through micro-arc oxidation, so that the manufacturing cost and the production period are greatly reduced; the thickness of the coating can reach less than or equal to 10 mu m, so that the distance between the fine pinholes is less than or equal to 0.35mm, the diameter of the spring needle is relatively thicker, the spring needle is not easy to break, and the service life is long.
Drawings
FIG. 1 is an exploded view of a high frequency micro test fixture according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-a guide frame, 2-a jig body, 3-a spring needle, 4-a jig cover plate and 5-a micro-fine pinhole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in FIG. 1, the high frequency micro-testing fixture of the present embodiment comprises a guiding frame 1, a fixture body 2, a spring pin 3 and a fixture cover plate 4, the guide frame 1, the jig body 2 and the jig cover plate 4 are all made of metal materials, the jig made of metal materials is not limited by high-frequency transmission, the requirement of high-frequency transmission is met, the jig cover plate 4 covers one side of the jig body 2, the guide frame 1 is clamped at the other side of the jig body 2, a plurality of micro-fine pinholes 5 are correspondingly arranged on the jig body 2 and the jig cover plate 4, the inner walls of the micro-fine pinholes 5 are coated with micro-arc oxidation insulating coatings, two ends of the spring needle 3 are respectively inserted into the micro-fine pinholes 5 on the jig body 2 and the jig cover plate 4, and the micro arc oxidation insulating coating is insulated from the jig body 2 and the jig cover plate 4, and the fixture 3 is fixed by the micro pinhole 5 on the jig body 2 and the jig cover plate 4. In the embodiment, the thickness of the micro-arc oxidation insulating coating can be 10 microns or even lower, compared with 0.08mm of a composite insulating material in the prior art, the thickness is obviously reduced, so that the distance between the fine pinholes 5 can be reduced, the hole distance can reach below 0.35mm, and under the condition of the same distance, the diameter of the spring needle 3 is thicker, and the service life is longer.
The manufacturing method of the high-frequency fine test fixture comprises the following steps:
(1) processing a semi-finished product of the jig body 2 containing the micro pinholes 5, a semi-finished product of the jig cover plate 4 containing the micro pinholes 5 and a semi-finished product of the guide frame 1;
(2) coating a micro-arc oxidation insulating coating on the semi-finished product of the jig body 2 and the semi-finished product of the jig cover plate 4 processed in the step (1) by a micro-arc oxidation process, so that the insulating coating is coated on the inner wall of the micro-fine pinhole 5 of the semi-finished product of the jig body 2 and the semi-finished product of the jig cover plate 4, and the coating is coated in a micro-arc oxidation mode;
(3) processing the coated semi-finished product of the jig body 2 and the semi-finished product of the jig cover plate 4 into finished products again;
(4) inserting a spring needle 3 into a jig body 2, then closing a jig cover plate 4, and inserting one end of the spring needle 3 into a micro pinhole 5 in the jig body 2 and inserting the other end of the spring needle into the micro pinhole 5 of the jig cover plate 4;
(5) coating a coating on the surface of the semi-finished product of the guide frame 1;
(6) processing the coated semi-finished product of the guide frame 1 into a finished product;
(7) the guide frame 1 is fixed on the jig body 2.
Preferably, the thickness of the micro-arc oxidation insulating coating is 8-20 μm, so that the insulating property and the requirement of low thickness can be met.
In conclusion, the high-frequency fine test fixture disclosed by the invention is made of metal materials, so that the requirement of high-frequency transmission is met; the inner walls of the micro pinholes on the jig body and the jig cover plate are coated with the insulating coating through micro-arc oxidation, so that the manufacturing cost and the production period are greatly reduced; the thickness of the coating can reach less than or equal to 10 mu m, so that the distance between the fine pinholes is less than or equal to 0.35mm, the diameter of the spring needle is relatively thicker, the spring needle is not easy to break, and the service life is long.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides a fine test fixture of high frequency, its characterized in that, includes guide frame, tool body, pogo pin and tool apron, guide frame, tool body and tool apron are the metal material, tool apron lid closes in one side of tool body, the guide frame card is at the opposite side of tool body, it sets up a plurality of fine pinholes to correspond on tool body and the tool apron, micro arc oxidation insulating coating is scribbled to the inner wall of fine pinhole, the both ends of pogo pin insert the tool body respectively and the tool apron on the fine pinhole to it is insulating with tool body and tool apron through micro arc oxidation insulating coating.
2. The high-frequency fine testing jig according to claim 1, wherein the micro-arc oxidation insulating coating has a thickness of 8 to 20 μm.
3. The high-frequency fine test fixture according to claim 2, wherein all the fine pinholes are arranged in an array, and the hole pitch is less than or equal to 0.35 mm.
4. The manufacturing method of the high-frequency fine test fixture is characterized by comprising the following steps of:
(1) processing a semi-finished product of the jig body containing the micro pinholes, a semi-finished product of the jig cover plate containing the micro pinholes and a semi-finished product of the guide frame;
(2) coating a micro-arc oxidation insulating coating on the semi-finished jig body and the semi-finished jig cover plate processed in the step (1) by a micro-arc oxidation process, so that the inner walls of the micro pinholes of the semi-finished jig body and the semi-finished jig cover plate are coated with the insulating coating;
(3) processing the coated semi-finished jig body and the coated semi-finished jig cover plate into finished products again;
(4) inserting the spring pin into the jig body, then closing the jig cover plate, and inserting one end of the spring pin into the micro pinhole in the jig body and inserting the other end of the spring pin into the micro pinhole of the jig cover plate;
(5) coating a coating on the surface of the guide frame semi-finished product;
(6) processing the coated semi-finished guide frame into a finished product;
(7) the guide frame is fixed on the jig body.
5. The manufacturing method of the high-frequency fine testing jig according to claim 4, wherein the thickness of the micro-arc oxidation insulating coating in the step (2) is 10 ± 1 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111347882.5A CN114113701A (en) | 2021-11-15 | 2021-11-15 | High-frequency micro-fine test fixture and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111347882.5A CN114113701A (en) | 2021-11-15 | 2021-11-15 | High-frequency micro-fine test fixture and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114113701A true CN114113701A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111347882.5A Pending CN114113701A (en) | 2021-11-15 | 2021-11-15 | High-frequency micro-fine test fixture and manufacturing method thereof |
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| CN (1) | CN114113701A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520216A (en) * | 2011-12-13 | 2012-06-27 | 安拓锐高新测试技术（苏州）有限公司 | Metal insulation chip test needle frame |
| CN103526255A (en) * | 2013-10-22 | 2014-01-22 | 哈尔滨工业大学 | Preparation method for quick in-situ growth of ultrathin wear-resisting coating on surface of aluminum alloy irregular part |
| US20160153111A1 (en) * | 2013-07-16 | 2016-06-02 | Keronite International Limited | High thermal conductivity insulated metal substrates produced by plasma electrolytic oxidation |
| CN108332856A (en) * | 2017-01-19 | 2018-07-27 | 上海微电子装备（集团）股份有限公司 | ED cores protective device and liquid crystal display light orientation equipment analyzing module |
| CN207925802U (en) * | 2018-01-02 | 2018-09-28 | 法特迪精密科技（苏州）有限公司 | A kind of high-frequency test socket for integrated circuit |
-
2021
- 2021-11-15 CN CN202111347882.5A patent/CN114113701A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520216A (en) * | 2011-12-13 | 2012-06-27 | 安拓锐高新测试技术（苏州）有限公司 | Metal insulation chip test needle frame |
| US20160153111A1 (en) * | 2013-07-16 | 2016-06-02 | Keronite International Limited | High thermal conductivity insulated metal substrates produced by plasma electrolytic oxidation |
| CN103526255A (en) * | 2013-10-22 | 2014-01-22 | 哈尔滨工业大学 | Preparation method for quick in-situ growth of ultrathin wear-resisting coating on surface of aluminum alloy irregular part |
| CN108332856A (en) * | 2017-01-19 | 2018-07-27 | 上海微电子装备（集团）股份有限公司 | ED cores protective device and liquid crystal display light orientation equipment analyzing module |
| CN207925802U (en) * | 2018-01-02 | 2018-09-28 | 法特迪精密科技（苏州）有限公司 | A kind of high-frequency test socket for integrated circuit |
Non-Patent Citations (1)
| Title |
|---|
| 高峰等: "小孔电解加工用电极的侧壁绝缘方法", 《第15届全国特种加工学术会议论文》 * |
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Application publication date: 20220301 |