CN114986040A - Long-life automatic wedge welding cleaver and preparation method thereof - Google Patents
Long-life automatic wedge welding cleaver and preparation method thereof Download PDFInfo
- Publication number
- CN114986040A CN114986040A CN202210895470.3A CN202210895470A CN114986040A CN 114986040 A CN114986040 A CN 114986040A CN 202210895470 A CN202210895470 A CN 202210895470A CN 114986040 A CN114986040 A CN 114986040A
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- knife
- cleaver
- bonding surface
- hole
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- 238000003466 welding Methods 0.000 title claims abstract description 36
- 235000014820 Galium aparine Nutrition 0.000 title claims abstract description 27
- 240000005702 Galium aparine Species 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 230000007704 transition Effects 0.000 claims abstract description 9
- 238000001755 magnetron sputter deposition Methods 0.000 claims abstract description 6
- 238000000151 deposition Methods 0.000 claims abstract description 5
- 238000010892 electric spark Methods 0.000 claims abstract description 5
- 238000001513 hot isostatic pressing Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 42
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- 239000010941 cobalt Substances 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004377 microelectronic Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
Abstract
The invention discloses a long-life automatic wedge welding chopper which comprises a knife handle and a knife head connected with the knife handle, wherein a central through hole is formed in the knife handle along the length direction, one end of the knife head is connected with the knife handle, the other end of the knife head is a bonding surface, the bonding surface consists of an adhesion layer and a wear-resistant layer which are prepared by magnetron sputtering, a semi-cylindrical groove is formed in the center of the bonding surface, a transition hole and an inclined lead hole are formed in the knife head, and a guide groove is formed in the inclined lead hole, close to an outlet of the bonding surface. The preparation method of the cleaver comprises the following steps: carrying out hot isostatic pressing treatment on the cleaver blank, then carrying out linear cutting, grinding by adopting a grinding machine, and then machining micropore structures in the tool handle and the tool bit by adopting a precise electric spark mode; and depositing an adhesion layer and a wear-resistant layer on the original bonding surface of the automatic wedge-welding cleaver by adopting a magnetron sputtering mode. The invention can prolong the service life of the cleaver and improve the automatic bonding efficiency, and meanwhile, the guide groove in the tool bit can restrict the wire outlet direction, thereby being beneficial to improving the consistency of the bonding effect.
Description
Technical Field
The invention relates to the field of microelectronic packaging, in particular to a long-life automatic wedge welding cleaver and a preparation method thereof.
Background
Wedge bonding is an important link in the field of microelectronic packaging, and the principle of wedge bonding is that metallurgical bonding is formed between a metal bonding wire and a bonding pad under the action of a chopper through certain temperature, pressure and ultrasonic energy. When the existing wedge welding chopper is used for large-batch and multi-type bonding, the bonding surface of the chopper repeatedly generates friction with a bonding pad and a bonding wire, the bonding surface is easily abraded, the service life of the chopper is shortened, especially in the automatic bonding process, the abrasion of the bonding surface can cause that the appearance and the bonding strength of a welding spot do not reach the standard, the bonding process needs to be interrupted frequently, the bonding parameters are readjusted, and the bonding efficiency is influenced. There is a great need for further improvements to existing riving knives to increase their useful life.
Disclosure of Invention
Aiming at the problems, the invention provides an automatic wedge welding cleaver with long service life and a preparation method thereof.
The invention adopts the following technical scheme:
the long-life automatic wedge welding chopper is characterized by comprising a knife handle (1) and a knife head (2), wherein a central through hole (12) is formed in the knife handle (1) along the length direction; one end of the tool bit (2) is connected with one end of the tool handle (1), the other end of the tool bit (2) is a bonding surface (21), the bonding surface (21) comprises an adhesion layer (212) and a wear-resistant layer (213), the wear-resistant layer (213) is connected with the body of the tool bit (2) through the adhesion layer (212), and a groove (22) is formed in the middle of the bonding surface (21); adjacent transition holes (25) and oblique lead holes (26) are formed in the tool bit (2), one end of each transition hole (25) is located at the bottom of the tool bit (2), one end of each oblique lead hole (26) is close to the bonding surface (21), and a guide groove (27) is formed in one end of each oblique lead hole (26) close to the bonding surface (21).
The long-life automatic wedge welding riving knife is characterized in that the knife handle (1) is cylindrical; the diameter of an opening at one end of the central through hole (12) close to the tool bit (2) is smaller than that of the other end.
The long-life automatic wedge welding riving knife is characterized in that step-shaped first unfilled corners (11) and step-shaped second unfilled corners (13) are sequentially machined on the side wall of the knife handle (1), and one end, with a relatively small opening diameter, of the central through hole (12) is close to the second unfilled corners (13); side walls of the cutter handle (1) opposite to the first unfilled corner (11) and the second unfilled corner (13) are provided with chamfered surfaces; the front end processing of tool bit (2) has first scarf (23), second scarf (24), and the one end and the bonding face (21) of first scarf (23) are connected, and the other end of first scarf (23) is to second unfilled corner (13) slope, and the one end and the bonding face (21) of second scarf (24) are connected, the other end of second scarf (24) with the scarf of handle of a knife (1) processing is connected.
The long-life automatic wedge welding riving knife is characterized in that one end of the guide groove (27) is positioned on the first chamfer surface (23), and the opening of the guide groove (27) on the first chamfer surface (23) is in any one of a circular shape, an oval shape or other polygonal shapes.
The long-life automatic wedge-welding cleaver is characterized in that the thickness of the adhesive layer (212) is 0.01-1 μm.
The long-life automatic wedge welding riving knife is characterized in that the thickness of the wear-resistant layer (213) is 0.1-10 mu m.
The long-life automatic wedge welding riving knife is characterized in that the included angle between the axial lead of the inclined lead hole (26) and the axial lead of the central through hole (12) is 20-70 degrees.
The long-life automatic wedge welding riving knife is characterized in that the material of the adhesion layer (212) is one or more of tungsten carbide, titanium nitride, tungsten, titanium, aluminum, chromium, nickel and cobalt.
The long-life automatic wedge welding riving knife is characterized in that the wear-resistant layer (213) is made of one or more of tungsten carbide, titanium nitride, aluminum nitride, chromium, nickel, cobalt, manganese, zirconium and diamond.
The preparation method of the long-life automatic wedge-welding cleaver is characterized by comprising the following steps of:
step (I): carrying out hot isostatic pressing treatment on the automatic wedge welding chopper blank, and then carrying out linear cutting to obtain a high-strength chopper round bar;
step (II): grinding the round bar of the riving knife by a grinding machine, and then processing micropore structures in the knife handle and the knife head by adopting a precise electric spark mode;
step (three): and depositing an adhesion layer and a wear-resistant layer on the original bonding surface of the automatic wedge-welding cleaver by adopting a magnetron sputtering mode.
The beneficial technical effects of the invention are as follows: according to the invention, the adhesion layer and the wear-resistant layer are added on the original bonding surface of the cleaver, so that the wear to the bonding surface in the cleaver bonding process is reduced, the service life of the cleaver can be prolonged, the influence of the bonding surface wear on the welding spot morphology and bonding strength in the automatic bonding process is reduced, and the automatic bonding efficiency is improved. The guide groove in the tool bit can restrict the wire outlet direction of the bonding wire, and is favorable for improving the consistency of bonding effect.
Drawings
FIG. 1 is a schematic view of the structure of the riving knife of the present invention;
FIG. 2 is an enlarged view of a portion of the bit shown in FIG. 1;
fig. 3 is a schematic structural diagram of a bonding surface according to the present invention.
Detailed Description
Referring to fig. 1-3, the long-life automatic wedge welding riving knife comprises a knife handle 1 and a knife head 2, wherein the knife handle 1 is cylindrical; a central through hole 12 is formed in the knife handle 1 along the length direction; the central through hole 12 has a smaller opening diameter at one end near the cutting head 2 than at the other end. One end of the tool bit 2 is connected with one end of the tool holder 1, the other end of the tool bit 2 is a bonding surface 21, the bonding surface 21 comprises an adhesion layer 212 and a wear-resistant layer 213, the wear-resistant layer 213 is connected with an original bonding surface 211 on the tool bit 2 body through the adhesion layer 212, and a semi-cylindrical groove 22 is formed in the middle of the bonding surface 21; the thickness of the adhesion layer 212 is 0.01-1 μm, and the material of the adhesion layer 212 is one or more of tungsten carbide, titanium nitride, tungsten, titanium, aluminum, chromium, nickel and cobalt. The thickness of the wear-resistant layer 213 is 0.1-10 μm, and the material of the wear-resistant layer 213 is one or more of tungsten carbide, titanium nitride, aluminum nitride, chromium, nickel, cobalt, manganese, zirconium, and diamond.
The invention discloses a preparation method of a long-life automatic wedge welding cleaver, which comprises the following steps:
step (I): carrying out hot isostatic pressing treatment on the blank of the automatic wedge-welded chopper, and then carrying out linear cutting to obtain a high-strength chopper round rod;
step (II): grinding the round bar of the riving knife by a grinding machine, and then processing micropore structures in the knife handle and the knife head by adopting a precise electric spark mode;
step (three): and depositing an adhesion layer and a wear-resistant layer on the original bonding surface of the automatic wedge-welding cleaver by adopting a magnetron sputtering mode.
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1
The utility model provides a long-life automatic wedge welding riving knife, includes cylindric riving knife handle 1 and the tool bit 2 that links to each other with it, and 1 lateral wall of handle of a knife is equipped with step-like first unfilled corner 11, second unfilled corner 13, and handle of a knife 1 is equipped with central through-hole 12 along length direction, and wherein the opening diameter that central through-hole 12 is close to tool bit 2 one end is less than the other end.
One end of the tool bit 2 is connected with the tool holder 1, the other end of the tool bit is a bonding surface 21, the bonding surface 21 comprises an adhesion layer 212 and a wear-resistant layer 213, the wear-resistant layer 213 is connected with the original bonding surface 211 of the tool bit body through the adhesion layer 212, the thickness of the adhesion layer 212 is 0.1 μm, and the thickness of the wear-resistant layer 213 is 1 μm. The center of the bonding surface 21 is provided with a semi-cylindrical groove 22, the diameter of the groove is 10 mu m, and two sides of the bonding surface 21 are connected with the side wall of the tool holder 1 through a first inclined cutting surface 23 and a second inclined cutting surface 24.
The tool bit 2 is internally provided with a transition hole 25 and an inclined lead hole 26, the included angle between the axial lead of the inclined lead hole 26 and the axial lead of the central through hole 12 is 45 degrees, a guide groove 27 is arranged at the outlet of the inclined lead hole 26 close to the bonding surface 21, and the opening of the guide groove 27 on the first inclined cutting surface 23 is rectangular.
The method for preparing the long-life automatic wedge-welding cleaver comprises the following specific steps:
step (I): carrying out hot isostatic pressing treatment on the chopper blank, and then carrying out linear cutting to obtain a high-strength chopper round bar;
step (II): grinding the round bar of the riving knife by a grinding machine, and then machining the micropore structures in the knife handle 1 and the knife head 2 by adopting precise electric sparks;
step (three): and depositing an adhesion layer 212 and a wear-resistant layer 213 on the original bonding surface 211 of the cleaver by magnetron sputtering, wherein the adhesion layer 212 is titanium, and the wear-resistant layer is titanium nitride.
When large-batch and various automatic wedge welding is carried out, the bonding wire penetrates through the central through hole 12, penetrates out of the transition hole 25 and the inclined lead hole 26 and is conveyed to the bonding surface 21 through the guide groove 27, the abrasion in the bonding process of the cleaver can be reduced by the abrasion-resistant layer 213 on the bonding surface 21, the influence of the abrasion-resistant layer on the welding spot appearance and the bonding strength is reduced, the automatic bonding efficiency is improved, and the service life of the cleaver is prolonged. In addition, the guide groove 27 can further restrict the moving range of the bonding wire, which is beneficial to improving the consistency of bonding effect.
It should be noted that the embodiments and the description are only the main features and advantages of the present invention, and various changes and modifications may be made without departing from the spirit of the present invention, and these changes and modifications should fall within the protection scope of the present invention.
Claims (10)
1. The long-life automatic wedge welding chopper is characterized by comprising a knife handle (1) and a knife head (2), wherein a central through hole (12) is formed in the knife handle (1) along the length direction; one end of the tool bit (2) is connected with one end of the tool handle (1), the other end of the tool bit (2) is a bonding surface (21), the bonding surface (21) comprises an adhesion layer (212) and a wear-resistant layer (213), the wear-resistant layer (213) is connected with the body of the tool bit (2) through the adhesion layer (212), and a groove (22) is formed in the middle of the bonding surface (21); adjacent transition holes (25) and oblique lead holes (26) are formed in the tool bit (2), one end of each transition hole (25) is located at the bottom of the tool bit (2), one end of each oblique lead hole (26) is close to the bonding surface (21), and a guide groove (27) is formed in one end of each oblique lead hole (26) close to the bonding surface (21).
2. The long-life automatic wedge welding riving knife of claim 1, characterized in that the knife handle (1) is cylindrical in shape; the diameter of an opening at one end of the central through hole (12) close to the tool bit (2) is smaller than that of the other end.
3. The long-life automatic wedge welding riving knife of claim 2, characterized in that the side wall of the knife handle (1) is sequentially processed with a first step angle (11) and a second step angle (13), and the end with a relatively small opening diameter of the central through hole (12) is close to the second step angle (13); the side wall of the knife handle (1) opposite to the first unfilled corner (11) and the second unfilled corner (13) is provided with a chamfer surface; the front end processing of tool bit (2) has first scarf (23), second scarf (24), and the one end and the bonding face (21) of first scarf (23) are connected, and the other end of first scarf (23) is to second unfilled corner (13) slope, and the one end and the bonding face (21) of second scarf (24) are connected, the other end of second scarf (24) with the scarf of handle of a knife (1) processing is connected.
4. The long-life automatic wedge welding riving knife of claim 3, characterized in that one end of the guide groove (27) is positioned on the first chamfer (23), and the opening of the guide groove (27) on the first chamfer (23) is in the shape of any one of a circle, an ellipse or other polygons.
5. The long life autowedge cleaver of claim 1, wherein the adhesive layer (212) has a thickness of 0.01 μm to 1 μm.
6. The long life autowedge cleaver of claim 1, wherein the wear layer (213) has a thickness of 0.1 to 10 μm.
7. The long life autowedge cleaver of claim 1, wherein the axis of the angled feed-through hole (26) is angled from 20 ° to 70 ° from the axis of the central through hole (12).
8. The long life autowedge cleaver of claim 1, wherein the adhesion layer (212) is one or more of tungsten carbide, titanium nitride, tungsten, titanium, aluminum, chromium, nickel, and cobalt.
9. The long-life automatic wedge welding cleaver of claim 1, wherein the wear resistant layer (213) is made of one or more of tungsten carbide, titanium nitride, aluminum nitride, chromium, nickel, cobalt, manganese, zirconium, and diamond.
10. The method for preparing the long-life automatic wedge-welding cleaver based on any one of claims 1-9, characterized by comprising the following steps of:
step (I): carrying out hot isostatic pressing treatment on the automatic wedge welding chopper blank, and then carrying out linear cutting to obtain a high-strength chopper round bar;
step (II): grinding the round bar of the riving knife by a grinding machine, and then processing micropore structures in the knife handle and the knife head by adopting a precise electric spark mode;
step (three): and depositing an adhesion layer and a wear-resistant layer on the original bonding surface of the automatic wedge-welding cleaver by adopting a magnetron sputtering mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210895470.3A CN114986040A (en) | 2022-07-28 | 2022-07-28 | Long-life automatic wedge welding cleaver and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210895470.3A CN114986040A (en) | 2022-07-28 | 2022-07-28 | Long-life automatic wedge welding cleaver and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114986040A true CN114986040A (en) | 2022-09-02 |
Family
ID=83021719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210895470.3A Pending CN114986040A (en) | 2022-07-28 | 2022-07-28 | Long-life automatic wedge welding cleaver and preparation method thereof |
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| CN (1) | CN114986040A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19743885A1 (en) * | 1997-10-04 | 1999-04-08 | Eurotec Ges Fuer Energiesparte | Wire bonding by compression welding |
| CN102637613A (en) * | 2012-05-09 | 2012-08-15 | 四川立泰电子有限公司 | Realization method for lead bonding thick aluminum wire |
| CN106191794A (en) * | 2016-06-30 | 2016-12-07 | 上海材料研究所 | The coating method of titanium alloy surface superhard anti-friction wear-resistant composite film and titanium alloy material |
| CN110385440A (en) * | 2019-07-29 | 2019-10-29 | 成都精蓉创科技有限公司 | The production technology of powder metallurgy depth chamber weldering chopper |
| CN110783213A (en) * | 2019-10-15 | 2020-02-11 | 中国电子科技集团公司第二十九研究所 | Wedge-shaped cleaver for wire bonding and preparation method |
| CN110961743A (en) * | 2019-10-24 | 2020-04-07 | 成都精蓉创科技有限公司 | Technology for processing deep cavity welding cleaver and tool point thereof |
| CN214588744U (en) * | 2021-01-26 | 2021-11-02 | 厦门虹鹭钨钼工业有限公司 | Wedge-shaped cleaver for ribbon lead bonding |
-
2022
- 2022-07-28 CN CN202210895470.3A patent/CN114986040A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19743885A1 (en) * | 1997-10-04 | 1999-04-08 | Eurotec Ges Fuer Energiesparte | Wire bonding by compression welding |
| CN102637613A (en) * | 2012-05-09 | 2012-08-15 | 四川立泰电子有限公司 | Realization method for lead bonding thick aluminum wire |
| CN106191794A (en) * | 2016-06-30 | 2016-12-07 | 上海材料研究所 | The coating method of titanium alloy surface superhard anti-friction wear-resistant composite film and titanium alloy material |
| CN110385440A (en) * | 2019-07-29 | 2019-10-29 | 成都精蓉创科技有限公司 | The production technology of powder metallurgy depth chamber weldering chopper |
| CN110783213A (en) * | 2019-10-15 | 2020-02-11 | 中国电子科技集团公司第二十九研究所 | Wedge-shaped cleaver for wire bonding and preparation method |
| CN110961743A (en) * | 2019-10-24 | 2020-04-07 | 成都精蓉创科技有限公司 | Technology for processing deep cavity welding cleaver and tool point thereof |
| CN214588744U (en) * | 2021-01-26 | 2021-11-02 | 厦门虹鹭钨钼工业有限公司 | Wedge-shaped cleaver for ribbon lead bonding |
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Application publication date: 20220902 |
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