CN104289409B - A kind of ultrasonic transducer and its clamping device - Google Patents
A kind of ultrasonic transducer and its clamping device Download PDFInfo
- Publication number
- CN104289409B CN104289409B CN201310295982.7A CN201310295982A CN104289409B CN 104289409 B CN104289409 B CN 104289409B CN 201310295982 A CN201310295982 A CN 201310295982A CN 104289409 B CN104289409 B CN 104289409B
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- Prior art keywords
- chopper
- clamping device
- groove
- head
- mounting hole
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Abstract
The invention provides a kind of clamping device of ultrasonic transducer, including a head, the head has a mounting hole for being used to install chopper, the head is additionally provided with one for adjusting the fastener of mounting hole size, and the hole wall of the mounting hole is provided with least two and is oppositely arranged groove for discharging stress.Present invention also offers a kind of ultrasonic transducer, including described clamping device, the also ultrasonic transformer including being connected with the head.The present invention is provided with the groove for discharging stress on the hole wall of mounting hole, and stress relief grooves can partly discharge stress, and broadsword v.broadsword causes crackly problem to be improved after locking fastener, so as to ensure that the reliability that chopper is installed.
Description
Technical field
The present invention relates to ultrasonic transducer field, particularly a kind of ultrasonic transducer and its clamping device.
Background technology
Ultrasonic transducer is the core component of wire bonding, significant in Electronic Packaging field.Ultrasonic waves
Energy device includes piezoelectric actuator, ultrasonic transformer, chopper and part etc. chopper screw, and its operation principle is will be super using inverse piezoelectric effect
The supersonic frequency electric signal that sonic generator sends is converted into the ultrasonic vibration of high frequency by piezo-electric motor, and by ultrasonic transformer and
The amplification of chopper, transmits and is gathered in the salient point interface of chip by ultrasonic energy.
Fig. 1 is the ultrasonic variable amplitude bar structure of extensive product at present, wherein the quilt of clamping device 2 being connected with ultrasonic transformer 1
One slotted eye 6 divides two parts, and fastener 3 by a vertical direction of slotted eye 6 provides chucking power for it；Front is vertically-mounted
Hole can be inserted into chopper 4, and the pretightning force provided by fastener 3 is locked by its.Wire bonding is particularly in ball bonding（ball bond）
The middle chopper for using is most for hollow ceramic material.It is fixed by screw broadsword v.broadsword in the luffing club head using metal
When, chopper is easy to be caught broken.Even the torque spanner to twisting chopper screw specifies, still can broadsword v.broadsword cause to split
Line.Too small torsion is not enough to fix chopper well again, and chopper can be made to be loosened in ultrasonic welding process, causes ultrasound
The loss of energy.
In wire bond package field, the bottom of clamping device 2 of the tip of chopper 4 to transducer head has fixed distance to limit
System, traditional dress chopper mode needs to use an assembling fixture to ensure chopper 4 in the position of mounting hole 7, so splits changing
During knife, plenty of time and labour are wasted.
The content of the invention
In order to solve existing ultrasonic transducer when being fixed using the luffing club head broadsword v.broadsword of metal, chopper
It is easy to the problem being caught broken.
In order to solve the above technical problems, embodiments of the invention provide a kind of clamping device of ultrasonic transducer.It is described
Clamping device includes a head, and the head has a mounting hole for being used to install chopper, and the head is additionally provided with one for adjusting
The fastener of whole mounting hole size, the hole wall of the mounting hole is provided with least two and is oppositely arranged for discharging the recessed of stress
Groove.
Present invention also offers a kind of ultrasonic transducer, including described clamping device, also including with the head phase
The ultrasonic transformer of connection.
Above-mentioned technical proposal of the invention has the beneficial effect that：The present invention is provided with for discharging on the hole wall of mounting hole
The groove of stress, stress relief grooves can partly discharge stress, and broadsword v.broadsword causes crackly problem after locking fastener
It is improved, so as to ensure that the reliability that chopper is installed.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of conventional ultrasound wave transducer；
Fig. 2 is the ultrasonic transducer structure schematic diagram of an embodiment of the present invention；
Fig. 3 does not install the top view of chopper for the ultrasonic transducer of an embodiment of the present invention；
Fig. 4 installs the top view of chopper for the ultrasonic transducer of an embodiment of the present invention；
Fig. 5 is the side view of Fig. 2；
Fig. 6 has the ultrasonic transducer of a quarter wave length of sound for the head clamp structure of an embodiment of the present invention
Structural representation;
Fig. 7 is the ultrasonic transducer clamping device stress analysis schematic diagram of an embodiment of the present invention.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
As in Figure 2-4, it is the structural representation of an embodiment of the present invention, the ultrasonic transducer includes a clamping machine
Structure 2 and the ultrasonic transformer 1 being connected with clamping device 2, the clamping device 2 include a head, and the head has one for pacifying
The mounting hole 7 of chopper 4 is filled, the clamping device 2 is additionally provided with one is used to adjust the fastener 3 of mounting hole size, the mounting hole 7
Hole wall be provided with least two and be oppositely arranged groove 8 for discharging stress.When material can not produce position under external force
During shifting, its geometry and size will change, and this deformation is known as strain.Generated inside when material is deformed upon
Distribution internal force intensity on one point, is called stress by reaction force resistance external force equal in magnitude but in opposite direction.Due to chopper
Majority is hollow ceramic material, and when fastener applies external force broadsword v.broadsword to be fixed, chopper is easy to be caught broken.The present invention
The groove for discharging stress is provided with the hole wall of mounting hole, stress relief grooves can partly discharge stress, lock fastener
Broadsword v.broadsword causes crackly problem to be improved after tight, so as to ensure that the reliability that chopper is installed.
Groove of the invention can be two or more, be distributed on the hole wall of mounting hole.Preferably, the groove 8
It is even number, and it is symmetrical.When even number groove is symmetrical, relative groove forms one group, every group of groove due to
Chopper both sides are arranged on, stress can be further reduced.The opening direction of groove of the invention 8 and the axis of chopper 4 an into folder
Angle, it is therefore preferable to 0~30 degree, more preferably, the angle is that the opening of 0 degree, i.e. groove is parallel with the axis of chopper.Due to groove
Opening it is parallel with the axis of chopper so that the stress on chopper is uniformly reduced.
The present inventor has also carried out stress analysis to the clamping device of transducer, as shown in fig. 7, from actual stress
Be can be derived that on analysis chart through stress maximum at the via heart and 2 points parallel with fastener force direction on mounting hole, i.e., in figure
A points at, easily cause at this chopper rupture.Common transducer head design, because the pretightning force of chopper fastener is acted on,
Easily above-mentioned 2 directions are caused than larger stress concentration.Therefore, the present invention increases stress relief grooves in above-mentioned position, makes
Stress of the chopper that fastener pretightning force is caused in the position is released.
Referring again to shown in Fig. 3 and 4, the groove of the present embodiment is two, the axle of two center lines of groove and ultrasonic transformer 1
The axis of line 111 and fastener 3 is respectively perpendicular, the groove line 222 of horizontal direction two not only with the axis of fastener 3, also and luffing
Rod axis 111 are vertical, and by the central point of the axis of chopper 4.
Two axis of groove 8 not only with chopper diameter parallel, and with luffing rod axis 111 and the axis of fastener 3 point
It is not parallel.Two Stress Release grooves 8 respectively on chopper 4 and the both sides of luffing rod axis 111 because two Stress Release grooves
8 and slotted eye 6 mounting hole 7 is equally divided into 4 parts, when locking chopper 4 by fastener 3, chopper mounting hole 7 and chopper 4 connect
Contacting surface product is changed into 4 parts.The stress concentration part of chopper 4 is reduced by pressing from both sides because Stress Release groove 8 exists and is released
The sensitivity that pretightning force difference is caused is held, protects chopper 4 not to be screwed broken.
Referring again to Fig. 2, the luffing club head 2 of the present embodiment horizontal positioned has a boss 11 to design, and the boss is at least
It is partially project into the bearing of trend of mounting hole.When chopper 4 is inserted from the lower end of mounting hole, the top of chopper 4 should be with boss
11 upper surface flush, it is achieved thereby that the setting of chopper position..
The height and position that chopper 4 is installed to chopper hole 7 in traditional approach is to lean on an independent tool to ensure, increased behaviour
Make complexity and cost.And the present invention determines the position of chopper by setting boss, as shown in Figure 4, Figure 5 in embodiment, become
The top of width club head 2 is provided with boss 11, and each described boss 11 extends to the top of chopper mounting hole 7, and two are divided into by slotted eye 6
Part, the height top of boss 11 ensures the upper surface flush of position height with the requirement of chopper 4, so makes installation chopper 4 more
It is convenient.The quantity of boss of the present invention 11 and structure are not limited to situation described by Fig. 4, Fig. 5.
As shown in fig. 6, for the head clamp structure of an embodiment of the present invention has the ultrasound of a quarter wave length of sound
The structural representation of wave transducer, the length of the head propagates the 1/5-1/3 of wavelength for sound wave in the ultrasonic transformer.It is preferred that
Ground, to propagate the 1/4 of wavelength.
Using above-mentioned technical proposal, the groove for discharging stress is provided with the hole wall of mounting hole, stress relief grooves can
With part release stress, broadsword v.broadsword causes crackly problem to be improved after locking fastener, so as to ensure
The reliability that chopper is installed.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of clamping device of ultrasonic transducer, an including head, the head has an installation for being used to install chopper
Hole, the head is additionally provided with one is used to adjust the fastener of mounting hole size, it is characterised in that：
The hole wall of the mounting hole is provided with least two and is oppositely arranged groove for discharging stress；
The groove is along mounting hole described in chopper axis direction insertion.
2. clamping device according to claim 1, it is characterised in that the opening parallel of the groove prolongs in the axis of chopper
Stretch direction.
3. clamping device according to claim 1, it is characterised in that the groove is even number, and symmetrical.
4. clamping device according to claim 1, it is characterised in that the groove is two, two groove center lines
Line by mounting hole the hole heart, it is and parallel with fastener force direction.
5. clamping device according to claim 4, it is characterised in that the line of described two groove center lines is by chopper
Axial line.
6. the clamping device according to claim any one of 1-5, it is characterised in that the head is provided with several boss,
The boss is at least partly projected into the bearing of trend of mounting hole.
7. a kind of ultrasonic transducer, it is characterised in that including the clamping device as described in claim any one of 1-6, also wrap
Include the ultrasonic transformer being connected with the head.
8. ultrasonic transducer according to claim 7, it is characterised in that when the groove is two, two grooves
The line of center line and the axis perpendicular of ultrasonic transformer.
9. ultrasonic transducer according to claim 7, it is characterised in that the length of the head is sound wave in the change
The 1/5-1/3 of wavelength is propagated in width bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310295982.7A CN104289409B (en) | 2013-07-15 | 2013-07-15 | A kind of ultrasonic transducer and its clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310295982.7A CN104289409B (en) | 2013-07-15 | 2013-07-15 | A kind of ultrasonic transducer and its clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104289409A CN104289409A (en) | 2015-01-21 |
| CN104289409B true CN104289409B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310295982.7A Expired - Fee Related CN104289409B (en) | 2013-07-15 | 2013-07-15 | A kind of ultrasonic transducer and its clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104289409B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637671B (en) * | 2018-05-21 | 2019-09-20 | 汇专绿色工具有限公司 | The assembly technique of ultrasonic wave knife handle |
| CN110976260A (en) * | 2019-11-25 | 2020-04-10 | 大族激光科技产业集团股份有限公司 | Amplitude transformer and energy conversion system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4203729A1 (en) * | 1992-02-06 | 1993-08-12 | Harald Dr Ing Hielscher | Mechanical amplitude-amplifier for high amplification of ultrasonic vibrations - has graded conical vibrator shape with reflection surface area larger than cross-section in the middle region |
| CN102240635A (en) * | 2011-04-20 | 2011-11-16 | 翟宝年 | Porcelain mouth clamping structure of ultrasonic amplitude transformer |
| CN202143876U (en) * | 2011-04-20 | 2012-02-15 | 翟宝年 | Ceramic nozzle clamping structure of ultrasonic amplitude transformer |
| CN203045096U (en) * | 2012-12-17 | 2013-07-10 | 上海声定科技有限公司 | Amplitude transformer of welding wire machine |
-
2013
- 2013-07-15 CN CN201310295982.7A patent/CN104289409B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4203729A1 (en) * | 1992-02-06 | 1993-08-12 | Harald Dr Ing Hielscher | Mechanical amplitude-amplifier for high amplification of ultrasonic vibrations - has graded conical vibrator shape with reflection surface area larger than cross-section in the middle region |
| CN102240635A (en) * | 2011-04-20 | 2011-11-16 | 翟宝年 | Porcelain mouth clamping structure of ultrasonic amplitude transformer |
| CN202143876U (en) * | 2011-04-20 | 2012-02-15 | 翟宝年 | Ceramic nozzle clamping structure of ultrasonic amplitude transformer |
| CN203045096U (en) * | 2012-12-17 | 2013-07-10 | 上海声定科技有限公司 | Amplitude transformer of welding wire machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104289409A (en) | 2015-01-21 |
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