CN110899888A - Cleaver capable of full-automatically threading and processing technology thereof - Google Patents
Cleaver capable of full-automatically threading and processing technology thereof Download PDFInfo
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- CN110899888A CN110899888A CN201911226857.4A CN201911226857A CN110899888A CN 110899888 A CN110899888 A CN 110899888A CN 201911226857 A CN201911226857 A CN 201911226857A CN 110899888 A CN110899888 A CN 110899888A
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- cleaver
- chopper
- laser
- inclined hole
- full
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- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- 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
Abstract
The invention discloses a cleaver capable of fully automatically threading, which comprises a columnar cleaver main body and a square-cone-shaped cutter point connected to one end of the cleaver main body, wherein a square groove is arranged on the end surface of the cutter point, an inclined hole communicated to an inclined side wall of the cutter point is arranged at the bottom of the square groove, a diagonal plane connected to the side wall of the cleaver main body is arranged on the end surface of the cleaver main body connected with the cutter point, the diagonal plane and the side surface of the cutter point provided with the inclined hole are arranged on the same side, and the working surface of the cleaver is machined by laser texturing. The invention is suitable for welding plane components, has simple processing, low cost, high processing precision on the roughness of the working surface of the riving knife and good welding effect.
Description
Technical Field
The invention relates to the field of microelectronics, in particular to a cleaver capable of full-automatically threading and a processing technology thereof.
Background
For the welding of microelectronic components, a deep cavity welding chopper is generally adopted, but the processing difficulty of the deep cavity welding chopper is larger, so that the processing cost is higher when the deep cavity welding chopper is adopted for welding a planar component, and the processing effect of the roughness of the working surface of the chopper is poor by adopting the existing processing technology of the chopper, so that the bonding effect between the chopper and a gold wire is poor, and the ultrasonic energy cannot be transferred from the chopper to the gold wire, thereby influencing the welding effect.
Disclosure of Invention
The invention provides a cleaver capable of fully automatically threading wires and a processing technology thereof, which are suitable for welding planar components, simple in processing, low in cost, high in processing precision of the roughness of the working surface of the cleaver, wide in application range and good in welding effect, and the roughness can be obtained by adjusting laser parameters according to requirements.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a but full-automatic wire-threading's chopper, is including being cylindrical chopper main part and connecting the knife tip that is square taper shape in chopper main part one end, be equipped with square groove on the terminal surface of knife tip, the tank bottom of square groove is equipped with the inclined hole that communicates to a slope lateral wall of knife tip, the connection of chopper main part be equipped with the scarf that is connected to chopper main part lateral wall on the terminal surface of knife tip, the scarf shares the limit with the side of the knife tip that is equipped with the inclined hole.
The invention makes an oblique section at the bell mouth of the wire feeding hole, increases the moving area of the welding wire passing through the wire feeding hole, increases the actual bending length of the welding wire when the welding wire is bent and enters the oblique hole, reduces the bending degree, and ensures that the welding wire is not easy to break in the high-speed wire feeding process of the full-automatic wire welding machine. The invention is suitable for welding plane components, has simple processing, low cost, high processing precision on the roughness of the working surface of the riving knife and good welding effect.
Preferably, the included angle a between the inclined cutting plane and the axis of the riving knife body ranges from 10 degrees to 30 degrees.
Preferably, the inclined side wall of the tool nose is provided with a bell mouth coaxial with the inclined hole, the smaller-caliber end of the bell mouth is connected with the end of the inclined hole far away from the square groove, and the included angle b between the inclined edge formed by the cross section of the bell mouth and positioned on one side of the wire penetrating hole and the inclined side wall of the tool nose ranges from 22.5 degrees to 65 degrees.
Preferably, the central axis of the inclined hole is not intersected with the side wall of the square groove.
The invention also provides a processing technology of the cleaver capable of full-automatically threading, and the technical scheme is as follows:
a processing technology of a cleaver capable of full-automatically threading comprises the following steps:
s1, paving superfine tungsten powder in a die cavity of the die, adjusting the pressure in the die to be 1100-1500 MPa, and pressing to obtain a chopper blank;
s2, placing the obtained cleaver blank in a furnace to be sintered at high temperature of 1500-3000 ℃ to improve the compactness of the cleaver blank, and finally cooling to obtain the cleaver;
s3, conveying the cleaver to a numerical control machining center, machining the inclined plane of the cutter point and the inclined plane of the cleaver main body, and then machining the inclined hole by adopting high-precision electric spark, picosecond laser or femtosecond laser;
and S4, processing the working surface of the riving knife by laser texturing.
Preferably, the power of the laser in step S4 is 120W-180W, and the frequency of the laser is 1Hz-1000 KHz.
Preferably, step S4 further includes the steps of:
when the working surface of the chopper is subjected to laser texturing treatment, nitrogen is blown laterally, the air pressure is 0.34MPa-0.52MPa, and the included angle between the blowing direction of the nitrogen and the tangent plane of the laser action point is 45 degrees, so that the laser textured surface is brighter.
Preferably, the roughness of the working surface of the riving knife is processed to Ra0.2-Ra1.6, so that the working surface of the riving knife has accurate roughness, the adhesion between the riving knife and the gold wire is ensured, and the ultrasonic energy can be smoothly transmitted from the riving knife to the gold wire.
The invention has the beneficial effects that: the invention makes an oblique section at the bell mouth of the wire feeding hole, increases the moving area of the welding wire passing through the wire feeding hole, increases the actual bending length of the welding wire when the welding wire is bent and enters the oblique hole, reduces the bending degree, and ensures that the welding wire is not easy to break in the high-speed wire feeding process of the full-automatic wire welding machine. The invention is suitable for welding plane components, has simple processing, low cost, high processing precision of the roughness of the working surface of the cleaver, wide application range and good welding effect, and the roughness can be obtained by adjusting laser parameters according to requirements.
Drawings
FIG. 1 is a schematic structural diagram of a cleaver capable of full-automatic threading according to an embodiment of the present invention;
FIG. 2 is a longitudinal sectional view of a cleaver capable of full-automatic threading according to an embodiment of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Description of reference numerals:
1. a riving knife body; 101. a chamfer plane; 2. a knife tip; 201. a square groove; 202. an inclined hole; 203. a bell mouth; 204. a working surface.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example (b):
as shown in fig. 1-3, a chopper capable of full-automatically threading includes a cylindrical chopper main body 1 and a square-cone-shaped chopper tip 2 connected to one end of the chopper main body 1, a square groove 201 is provided on an end surface of the chopper tip 2, an inclined hole 202 communicating to an inclined side wall of the chopper tip 2 is provided at a bottom of the square groove 201, an inclined plane 101 connected to a side wall of the chopper main body 1 is provided on an end surface of the chopper main body 1 connected to the chopper tip 2, and the inclined plane 101 is shared with a side surface of the chopper tip 2 provided with the inclined hole 202.
The invention makes the chamfer plane 101 at the bell mouth 203 of the wire feed hole, increases the active area of the welding wire passing through the wire feed hole, increases the actual bending length of the welding wire when the welding wire is bent and enters the chamfer hole 202, reduces the bending degree, and the welding wire is not easy to break in the high-speed wire feeding process of the full-automatic wire welding machine. The method is suitable for welding the planar components, and has the advantages of simple processing, low cost, high processing precision on the roughness of the working surface 204 of the riving knife and good welding effect.
In one embodiment, the angle a of the chamfer 101 with respect to the axis of the riving knife body 1 is in the range of 10-30.
In one embodiment, as shown in fig. 3, a flare 203 coaxial with the inclined hole 202 is arranged on the inclined side wall of the tool tip 2, a smaller caliber end of the flare 203 is connected with an end of the inclined hole 202 far away from the square groove 201, and an included angle b between an inclined side of the cross section of the flare 203 on one side of the wire passing hole and the inclined side wall of the tool tip 2 is in a range of 22.5-65 °.
In one embodiment, as shown in fig. 3, the central axis of the inclined hole 202 does not intersect with the side wall of the square groove 201.
The invention also provides a processing technology of the cleaver capable of full-automatically threading, and the technical scheme is as follows:
a processing technology of a cleaver capable of full-automatically threading comprises the following steps:
s1, paving superfine tungsten powder in a die cavity of the die, adjusting the pressure in the die to be 1100-1500 MPa, and pressing to obtain a chopper blank;
s2, placing the obtained cleaver blank in a furnace to be sintered at high temperature of 1500-3000 ℃ to improve the compactness of the cleaver blank, and finally cooling to obtain the cleaver;
s3, the cleaver is sent to a numerical control machining center, the inclined plane of the tool nose 2 and the inclined plane 101 of the cleaver main body 1 are machined, and then the inclined hole 202 is machined by adopting high-precision electric spark, picosecond laser or femtosecond laser;
and S4, processing the riving knife working surface 204 by laser texturing.
In one embodiment, the power of the laser in step S4 is 120W-180W, and the frequency of the laser is 1Hz-1000 KHz.
In one embodiment, step S4 further includes the following steps:
when the working surface 204 of the chopper is subjected to laser texturing treatment, nitrogen is blown laterally, the air pressure is 0.34MPa-0.52MPa, and the included angle between the blowing direction of the nitrogen and the tangent plane of the laser action point is 45 degrees, so that the laser textured surface is brighter.
In one embodiment, the roughness of the work surface 204 of the riving knife is processed to be Ra0.2-Ra1.6, so that the work surface 204 of the riving knife has accurate roughness, and the bonding between the riving knife and the gold wire is ensured, so that the ultrasonic energy can be smoothly transmitted from the riving knife to the gold wire.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. The utility model provides a but full-automatic wire-threading's chopper, its characterized in that, including be cylindrical chopper main part and connect the knife tip that is the square taper shape at chopper main part one end, be equipped with square groove on the terminal surface of knife tip, the tank bottom of square groove is equipped with the inclined hole that communicates to a slope lateral wall of knife tip, the connection of chopper main part be equipped with the scarf that is connected to chopper main part lateral wall on the terminal surface of knife tip, the scarf shares with the side of the knife tip that is equipped with the inclined hole.
2. The cleaver capable of full-automatic threading according to claim 1, wherein the included angle a between the oblique cutting plane and the axis of the cleaver body is in the range of 10-30 °.
3. The cleaver capable of fully automatically threading according to claim 2, wherein a bell mouth coaxial with the inclined hole is arranged on the inclined side wall of the cutter tip, the smaller-caliber end of the bell mouth is connected with one end of the inclined hole far away from the square groove, and an included angle b between a bevel edge formed by the cross section of the bell mouth and the inclined side wall of the cutter tip is 22.5-65 degrees.
4. The cleaver capable of full-automatic wire threading of claim 3, wherein the central axis of the inclined hole is not intersected with the side wall of the square groove.
5. The processing technology of the cleaver capable of automatically threading the wires as claimed in any one of claims 1 to 4, which is characterized by comprising the following steps:
s1, paving superfine tungsten powder in a die cavity of the die, adjusting the pressure in the die to be 1100-1500 MPa, and pressing to obtain a chopper blank;
s2, placing the obtained cleaver blank in a furnace to be sintered at high temperature of 1500-3000 ℃ to improve the compactness of the cleaver blank, and finally cooling to obtain the cleaver;
s3, conveying the cleaver to a numerical control machining center, machining the inclined plane of the cutter point and the inclined plane of the cleaver main body, and then machining the inclined hole by adopting high-precision electric spark, picosecond laser or femtosecond laser;
and S4, processing the working surface of the riving knife by laser texturing.
6. The process of claim 5, wherein the laser power in step S4 is 120W-180W, and the laser frequency is 1Hz-1000 KHz.
7. The processing technology of the cleaver capable of full-automatically threading according to claim 6, wherein the step S4 further comprises the following steps:
when the working surface of the chopper is subjected to laser texturing treatment, nitrogen is blown laterally, the air pressure is 0.34MPa-0.52MPa, and the included angle between the blowing direction of the nitrogen and the tangent plane of the laser action point is 45 degrees.
8. The processing technology of the chopper capable of automatically threading the filaments as claimed in claim 7, wherein the roughness of the working surface of the chopper is processed to Ra0.2-Ra1.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911226857.4A CN110899888A (en) | 2019-12-04 | 2019-12-04 | Cleaver capable of full-automatically threading and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911226857.4A CN110899888A (en) | 2019-12-04 | 2019-12-04 | Cleaver capable of full-automatically threading and processing technology thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110899888A true CN110899888A (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911226857.4A Pending CN110899888A (en) | 2019-12-04 | 2019-12-04 | Cleaver capable of full-automatically threading and processing technology thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775628A (en) * | 2020-12-30 | 2021-05-11 | 有研科技集团有限公司 | Wedge-shaped riving knife for wire bonding and processing method thereof |
Citations (8)
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| US3627192A (en) * | 1969-02-03 | 1971-12-14 | Bearings Seale & Gears Inc | Wire lead bonding tool |
| US4422568A (en) * | 1981-01-12 | 1983-12-27 | Kulicke And Soffa Industries, Inc. | Method of making constant bonding wire tail lengths |
| US6667625B1 (en) * | 2001-12-31 | 2003-12-23 | Charles F. Miller | Method and apparatus for detecting wire in an ultrasonic bonding tool |
| US20050279811A1 (en) * | 2004-06-22 | 2005-12-22 | Gaiser Tool Company | Wire bonding wedge |
| WO2013067270A1 (en) * | 2011-11-04 | 2013-05-10 | Invensas Corporation | Bonding wedge |
| US20150187729A1 (en) * | 2014-01-02 | 2015-07-02 | Texas Instruments Incorporated | Wire Stitch Bond Having Strengthened Heel |
| 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 |
| CN110497166A (en) * | 2019-08-13 | 2019-11-26 | 成都精蓉创科技有限公司 | A kind of deep chamber weldering chopper and its production technology for full-automatic wirebond machine |
-
2019
- 2019-12-04 CN CN201911226857.4A patent/CN110899888A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3627192A (en) * | 1969-02-03 | 1971-12-14 | Bearings Seale & Gears Inc | Wire lead bonding tool |
| US4422568A (en) * | 1981-01-12 | 1983-12-27 | Kulicke And Soffa Industries, Inc. | Method of making constant bonding wire tail lengths |
| US6667625B1 (en) * | 2001-12-31 | 2003-12-23 | Charles F. Miller | Method and apparatus for detecting wire in an ultrasonic bonding tool |
| US20050279811A1 (en) * | 2004-06-22 | 2005-12-22 | Gaiser Tool Company | Wire bonding wedge |
| WO2013067270A1 (en) * | 2011-11-04 | 2013-05-10 | Invensas Corporation | Bonding wedge |
| US20150187729A1 (en) * | 2014-01-02 | 2015-07-02 | Texas Instruments Incorporated | Wire Stitch Bond Having Strengthened Heel |
| 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 |
| CN110497166A (en) * | 2019-08-13 | 2019-11-26 | 成都精蓉创科技有限公司 | A kind of deep chamber weldering chopper and its production technology for full-automatic wirebond machine |
Non-Patent Citations (1)
| Title |
|---|
| 本书编辑委员会: "《冶金科学技术普及读物现代钢铁流程轧钢新技术3000问 中 板带暨轧辊分册》", 31 August 2005 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775628A (en) * | 2020-12-30 | 2021-05-11 | 有研科技集团有限公司 | Wedge-shaped riving knife for wire bonding and processing method thereof |
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