CN110497166A - A kind of deep chamber weldering chopper and its production technology for full-automatic wirebond machine - Google Patents
A kind of deep chamber weldering chopper and its production technology for full-automatic wirebond machine Download PDFInfo
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- CN110497166A CN110497166A CN201910746360.9A CN201910746360A CN110497166A CN 110497166 A CN110497166 A CN 110497166A CN 201910746360 A CN201910746360 A CN 201910746360A CN 110497166 A CN110497166 A CN 110497166A
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- chopper
- main body
- weld part
- automatic
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- 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
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
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Abstract
The invention discloses a kind of deep chambers for full-automatic wirebond machine to weld chopper, including the chopper main body being in the form of a column and the weld part in square cone cell for connecting one end face of chopper main body, weld part has welding wire slot and square groove, weld part is equipped with the inclined hole of perforation square groove slot bottom, the one side of weld part of the chopper main body equipped with scarf, the scarf and equipped with inclined hole is total to side, and chopper main body is equipped with wire hole, the production technology of the chopper is the following steps are included: S1, prepares green compact mold；S2, molding；S3 is sintered blank；S4, numerical control machining center are processed, high-precision electric spark-erosion perforation, and the structure in the present invention plays the role of reducing during high speed wire feed to welding wire to be swung, consolidates welding wire direction, to ensure that wire feed rate.
Description
Technical field
The present invention relates to microelectronic field, especially a kind of deep chamber for full-automatic wirebond machine welds chopper and its production work
Skill.
Background technique
The weld part for the deep chamber weldering chopper for microelectronics micro-force sensing that our company produces at present is equipped with " V " type through slot, and
Using full-automatic wirebond machine wire feed, when welding wire enters " V " type through slot from inclined hole, since wire feed is fast, it is easy to occur in " V " type through slot
Welding wire direction is unstable, the situation of pendulum wire severity, is unfavorable for fully automatic high-speed weld job, therefore original chopper is to for complete
Automatic wirebond machine wire feed, structure could be improved.
Summary of the invention
To solve problems of the prior art, the present invention provides a kind of deep chamber welderings for full-automatic wirebond machine to split
Knife and its production technology.
The technical solution adopted by the present invention is that:
A kind of deep chamber weldering chopper for full-automatic wirebond machine, including the chopper main body being in the form of a column and connects the chopper main body
The weld part in square cone cell of one end face has on the top end face of the weld part and penetrates through the two corresponding tilt side wall of weld part
The square groove of welding wire slot and the close welding wire slot, another sloped sidewall of the weld part are equipped with perforation square groove slot bottom
Inclined hole, an end face of the chopper main body is equipped with the scarf for connecting the chopper main body wall, the scarf and equipped with inclined hole
The one side of weld part be total to side, the other end of the chopper main body is equipped with the wire hole for penetrating through the scarf.
Preferably, the angle a range of the scarf and chopper main body axis is 10 ° -30 °.
Preferably, it is coaxially provided on the oblique side wall with inclined hole in coniform opening, opening section institute shape
At bevel edge positioned at wire hole side and the angle b range of the oblique side wall be 22.5 ° -45 °.
Preferably, the aspect ratio of the wire hole is 38:1.
Preferably, the central axis of the inclined hole and the not formed intersection of the side wall of square groove.
A kind of production technology of the deep chamber weldering chopper for full-automatic wirebond machine, comprising the following steps:
S1 prepares green compact mold, is equipped in the green compact mold and matches with the chopper main body and weld part contour structures
Type chamber, the type is intracavitary equipped with the mode to match with the wire hole；
S2, blank form, and superfine tungsten powder is laid in the mold cavity in S1, and the pressure control adjusted in mold exists
1100MPA-1500MPA, compacting obtain chopper blank；
Chopper blank obtained in S2 is placed in furnace and carries out high temperature sintering with 1500 DEG C -3000 DEG C of temperature, mentions by S3
Its high compactness, finally cooling obtains the chopper；
S4 send chopper obtained in S3 to numerical control machining center, the beveling of inclined surface and chopper main body to weld part
Face is processed, and is then processed using high precision electro spark to oblique square hole.
The beneficial effects of the present invention are:
The present invention makees scarf in the opening of wire hole, increases the active area that welding wire is pierced by from wire hole, makes to weld
Actual flexion length of the silk when immediately bending into inclined hole increases, and curvature becomes smaller, and welding wire is sent in full-automatic wirebond machine high speed
Welding wire is not easily broken during silk, in addition, the present invention is equipped with square groove on weld part, square groove has tetrahedral side wall,
Play the role of reducing to welding wire during high speed wire feed and swing, consolidate welding wire direction, to ensure that high band moves feelings
Condition lower wire feeding hose precision.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of original chopper；
Fig. 2 is the structural schematic diagram of chopper in the present invention；
Fig. 3 is the cross-sectional view of chopper in the present invention；
Fig. 4 is the partial enlarged view of A in Fig. 3；
Description of symbols:
10- chopper main body；11- scarf；12- wire hole；20- weld part；21- welding wire slot；22- square groove；23- is oblique
Hole；231- opening；24- angle a；25- angle b；The original chopper of 30-.
Specific embodiment
The embodiment of the present invention is described in detail with reference to the accompanying drawing.
Embodiment:
A kind of deep chamber weldering chopper for full-automatic wirebond machine, is used for micro-joining field, is mounted on full-automatic wire bond
The tool for making guidance welding wire welding on machine, including the chopper main body 10 that is in the form of a column and connect 10 1 end face of chopper main body in side
The weld part 20 of cone cell, the end face of weld part 20 are welding face.Have on the top end face of the weld part 20 and penetrates through the weldering
The welding wire slot 21 of 20 liang of corresponding tilt side walls of socket part and close to the welding wire slot 21 square groove 22, the weld part 20 it is another
Sloped sidewall is equipped with the inclined hole 23 of perforation 22 slot bottom of square groove, and an end face of the chopper main body 10, which is equipped with, connects the chopper
The one side of the scarf 11 of 10 side wall of main body, the scarf 11 and the weld part 20 for being equipped with inclined hole 23 is total to side, the chopper master
The other end of body 10 is equipped with the wire hole 12 for penetrating through the scarf 11.
For convenient for wearing silk by hand, there is the structure of N shape or taper in the inside of original 30 wire hole 12 of chopper, and of the invention splits
The wire hole 12 of knife is straight-through shape, and more original 30 processing request of chopper reduces, and improves production efficiency.
Side wall in square groove 22 close to welding wire slot 21 is at certain angle of inclination, and the central axis of the inclined hole 23 and side
The not formed intersection of the side wall of shape slot 22, welding wire will not be against on the side wall of direction slot after being pierced by from 22 bottom of square groove.
Welding wire passes through wire hole 12 from one end of chopper, be bonded scarf 11 and with scarf 11 be total to the inclined side on side into
Enter inclined hole 23, be pierced by from the groove bottom of square groove 22 and reach welding wire slot 21 i.e. working face, such as Fig. 1 compares original chopper 30, this hair
Bright middle welding wire becomes smaller from the curvature that wire hole 12 exports to inclined hole 23, in the case where the high speed wire feed of full-automatic wirebond machine not
Frangibility.
In particular, welding wire is pierced by when high speed is by square groove 22 from inclined hole 23, the two sidewalls of square groove 22 are to welding wire
The effect for preventing that welding wire direction is unstable, swing is severe is played, the accuracy of welding is improved.
Further, angle a (24) range of the scarf 11 and 10 axis of chopper main body is 10 ° -30 °, from beveling
It is chamfer at face 11 and the total side of 20 sloped sidewall of weld part, gradient is i.e. with the angle a's (24) of 10 axis of chopper main body
For range at 10 ° -30 °, excessive 11 area of then scarf of angle is too small, and welding wire arrives the bending of inclined hole 23 in the opening of wire hole 12 231
Degree variation is unobvious, and then scarf 11 is excessive for angle too small, and welding wire is then excessive to be exposed to outside, guarantor of the wire hole 12 to welding wire
Shield effect reduces.
Further, it is coaxially provided with inclined hole 23 in coniform opening 231, the opening on the oblique side wall
It is 22.5 ° -45 ° that 231 sections, which are formed by positioned at the bevel edge of 12 side of wire hole and angle b (25) range of the oblique side wall, is subtracted
Small welding wire enters the curvature of inclined hole 23, further ensures full-automatic wirebond machine high speed wire feed.
The aspect ratio of the wire hole 12 is 38:1, and aspect ratio of the invention is larger, when improving the welding of microelectronics depth chamber
Welding precision and adaptibility to response to complex situations.
A kind of production technology of the deep chamber weldering chopper for full-automatic wirebond machine, comprising the following steps:
S1 prepares green compact mold, is equipped with and 20 contour structures phase of the chopper main body 10 and weld part in the green compact mold
Matched type chamber, the type are intracavitary equipped with the mode to match with the wire hole 12；
S2, blank form, and superfine tungsten powder is laid in the mold cavity in S1, and the pressure control adjusted in mold exists
1100MPA-1500MPA, compacting obtain chopper blank；
Chopper blank obtained in S2 is placed in furnace and carries out high temperature sintering with 1500 DEG C -3000 DEG C of temperature, mentions by S3
Its high compactness, finally cooling obtains the chopper；
S4 send chopper obtained in S3 to numerical control machining center, the inclined surface and chopper main body 10 to weld part 20
Scarf 11 is processed, and is then processed using high precision electro spark to inclined hole 23.
A specific embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (6)
1. a kind of deep chamber for full-automatic wirebond machine welds chopper, which is characterized in that including the chopper main body being in the form of a column and connection
The weld part in square cone cell of one end face of chopper main body, has that penetrate through the weld part two corresponding on the top end face of the weld part
Another sloped sidewall of the square groove of the welding wire slot of sloped sidewall and the close welding wire slot, the weld part is equipped with perforation side
The inclined hole of shape slot slot bottom, an end face of the chopper main body are equipped with the scarf for connecting the chopper main body wall, the scarf
It is total to side with the one side for the weld part for being equipped with inclined hole, silk is worn equipped with the perforation scarf in the other end of the chopper main body
Hole.
2. a kind of deep chamber for full-automatic wirebond machine according to claim 1 welds chopper, which is characterized in that the beveling
The angle a range of face and chopper main body axis is 10 ° -30 °.
3. a kind of deep chamber for full-automatic wirebond machine according to claim 1 welds chopper, which is characterized in that be located at described
It is coaxially provided with inclined hole in coniform opening on oblique side wall, the opening section is formed by the bevel edge positioned at wire hole side
Angle b range with the oblique side wall is 22.5 ° -45 °.
4. a kind of deep chamber for full-automatic wirebond machine according to claim 1 welds chopper, which is characterized in that described to wear silk
The aspect ratio in hole is 38:1.
5. a kind of deep chamber for full-automatic wirebond machine according to claim 1-4 welds chopper, which is characterized in that
The central axis of the inclined hole and the not formed intersection of the side wall of square groove.
6. a kind of production technology of the deep chamber weldering chopper for full-automatic wirebond machine, which comprises the following steps:
S1 prepares green compact mold, and the type to match with the chopper main body and weld part contour structures is equipped in the green compact mold
Chamber, the type are intracavitary equipped with the mode to match with the wire hole；
S2, blank form, and superfine tungsten powder is laid in the mold cavity in S1, and the pressure adjusted in mold is controlled in 1100MPA-
1500MPA, compacting obtain chopper blank；
Chopper blank obtained in S2 is placed in furnace and carries out high temperature sintering with 1500 DEG C -3000 DEG C of temperature, improves it by S3
Compactness, finally cooling obtains the chopper；
S4 send chopper obtained in S3 to numerical control machining center, the scarf of inclined surface and chopper main body to weld part into
Row processing, then processes inclined hole using high precision electro spark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746360.9A CN110497166A (en) | 2019-08-13 | 2019-08-13 | A kind of deep chamber weldering chopper and its production technology for full-automatic wirebond machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746360.9A CN110497166A (en) | 2019-08-13 | 2019-08-13 | A kind of deep chamber weldering chopper and its production technology for full-automatic wirebond machine |
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| CN110497166A true CN110497166A (en) | 2019-11-26 |
Family
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| CN201910746360.9A Pending CN110497166A (en) | 2019-08-13 | 2019-08-13 | A kind of deep chamber weldering chopper and its production technology for full-automatic wirebond machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899888A (en) * | 2019-12-04 | 2020-03-24 | 成都精蓉创科技有限公司 | Cleaver capable of full-automatically threading and processing technology thereof |
| 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 |
| CN112786470A (en) * | 2020-12-30 | 2021-05-11 | 有研科技集团有限公司 | Wedge-shaped riving knife for bonding strips and machining method thereof |
| CN114799595A (en) * | 2022-04-13 | 2022-07-29 | 有研工程技术研究院有限公司 | Deep cavity welding wedge-shaped cleaver and machining method thereof |
| CN116000511A (en) * | 2022-12-26 | 2023-04-25 | 深圳市海志亿半导体工具有限公司 | Cutter head for enhancing fine-pitch wire feeding forming effect |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899888A (en) * | 2019-12-04 | 2020-03-24 | 成都精蓉创科技有限公司 | Cleaver capable of full-automatically threading and processing technology thereof |
| 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 |
| CN112786470A (en) * | 2020-12-30 | 2021-05-11 | 有研科技集团有限公司 | Wedge-shaped riving knife for bonding strips and machining method thereof |
| CN114799595A (en) * | 2022-04-13 | 2022-07-29 | 有研工程技术研究院有限公司 | Deep cavity welding wedge-shaped cleaver and machining method thereof |
| CN116000511A (en) * | 2022-12-26 | 2023-04-25 | 深圳市海志亿半导体工具有限公司 | Cutter head for enhancing fine-pitch wire feeding forming effect |
| CN116000511B (en) * | 2022-12-26 | 2024-04-09 | 深圳市海志亿半导体工具有限公司 | Cutter head for enhancing fine-pitch wire feeding forming effect |
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