CN103707050B - A kind of apparatus and method press-fited for IGBT module - Google Patents
A kind of apparatus and method press-fited for IGBT module Download PDFInfo
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- CN103707050B CN103707050B CN201310645754.8A CN201310645754A CN103707050B CN 103707050 B CN103707050 B CN 103707050B CN 201310645754 A CN201310645754 A CN 201310645754A CN 103707050 B CN103707050 B CN 103707050B
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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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/067—Bolt tensioners
-
- 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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/069—Multi-spindle machines
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- Gears, Cams (AREA)
Abstract
The invention provides a kind of device press-fited for IGBT module, including the first fixed plate, the second fixed plate, the gear drive that is arranged between the first fixed plate and the second fixed plate, and driven by gear drive and multiple elements of tightening that press mounting bolt with IGBT module matches, gear drive have accept outside moment an input gear system and multiple can be to the output gear train tightening element output screwing force accordingly.Additionally, gear drive also has the intergrade gear train being arranged between input gear system and output gear train for the moment of input gear system is delivered to output gear train.This apparatus structure is simple, easily operates, and improves and press-fits efficiency and press-fit effect.Present invention also offers and a kind of use devices discussed above to the method press-fiting IGBT module.
Description
Technical field
The present invention relates to a kind of device press-fited for IGBT module, and this device of a kind of use is to IGBT
The method that module carries out press-fiting.
Background technology
At present, powerful IGBT module is all widely applied in many fields, but in application process,
System module ability is formed firstly the need of IGBT module being fitted in (water-cooled or air-cooled) on a heat-radiating substrate
Use.Now conventional IGBT module external form is divided into p-type, G type, D type, N-type, E type etc., different
External form needs the press mounting bolt of varying number during correspond to press-fit, wherein p-type, G type need four and press-fit
Bolt, D type, N-type six press mounting bolts of needs, E type then needs eight press mounting bolts.The most in fig. 8,
Show that the structural representation of N-type IGBT module, N-type IGBT module add up to six press mounting bolts.
During the use of IGBT module, the quality press-fited by the stress distribution that directly affects in module with
And the heat radiation of module, if press mounting bolt force disunity or order confusion all would potentially result in IGBT module
In ceramic insulating substrate and stress tension on silicon chip, cause the damage of device or deterioration and IGBT module
With the loose contact of radiator, heat radiation does not reaches requirement, thus causes module to cross cause thermal damage.For shown in Fig. 8
N-type IGBT module, general order of tightening is: C-D-A-F-E-B, pre-initially with little moment values
Tight each press mounting bolt, then uses suitable moment finally to tighten each bolt.
Existing commonly used pressing method is: first with torque spanner according to diagonal angle principle successively pretension IGBT
The press mounting bolt of module, then resets clamping torque, tightens press mounting bolt successively, complete to press-fit.
Used pressing method efficiency is on the low side.There is multiple press mounting bolt in each IGBT module, needs in turn
Pretension once, is tightened once the most again, and being equivalent to each module force number of times is press mounting bolt number × 2.When
When bolt quantity is few, the impact on efficiency is relatively low, but when bolt quantity is more, will greatly affect efficiency.
Meanwhile, used pressing method is for the most independently to tight a bolt, and when tightening certain bolt, then goes to twist therewith
When another symmetrical bolt or other bolt, it is possible to the stress of IGBT module various piece can be produced
Impact, thus cause the deformation of various piece there are differences, so, IGBT module substrate will be caused and dissipate
Each point cantact of hot device is inconsistent, and therefore, heat radiation everywhere will there are differences, and finally affects IGBT module
Use.
Further, used pressing method press-fits for determining moment, but the diversity of the coefficient of friction due to each bolt,
Pressure assembling force on each bolt may be inconsistent, the most accordingly, the symmetric part of IGBT module substrate its
Deflection also likely to be present difference, it is possible to affects further contacting of substrate and radiator.
Summary of the invention
For the problems referred to above in the presence of prior art, the present invention proposes one and press-fits for IGBT module
Device, its simple in construction, easy to use, operating efficiency can be improved, ensure to press-fit effect simultaneously.The present invention
The method further relating to use this device to press-fit IGBT module.
According to an aspect of the present invention, it is provided that a kind of device press-fited for IGBT module, solid including first
Determine plate, the second fixed plate, the gear drive machine that is arranged between described first fixed plate and described second fixed plate
Structure, and driven by described gear drive and press mounting bolt with IGBT module matches multiple twists
Tight element, described gear drive have accept outside moment an input gear system and multiple can be to accordingly
Described in tighten element output screwing force output gear train.
Preferably, described gear drive also has and is arranged on described input gear system and described output gear train
Between intergrade gear train.
In one embodiment, output gear train is set to off the central shaft centrosymmetry in input gear system.
In another embodiment, second in described input gear system is arranged in the radial direction about described input
The described intergrade gear train of the first radial direction symmetry of gear train, described intergrade gear train is along described first
It is provided with the described output gear train symmetrical about described second radial direction in the radial direction.
A further embodiment, is arranged about described input tooth in the first diametric(al) of described input gear system
The described output gear train of the second radial direction symmetry of train.
In an embodiment, input gear system, output gear train and intergrade gear train all include gear shaft, setting
Gear on gear shaft and the bearing being arranged on gear shaft two ends, bearing is solid with the first fixed plate and second respectively
Determine the fixing connection of plate.
Preferably, output gear train and the gear shaft of center tooth train and gear are made up of duralumin, hard alumin ium alloy.
Preferably, tighten element and be configured to torsion screwdriver or ratchet screw.
The output gear train that at least one is driven by described input gear system connects torsion screwdriver, and at least one
The output gear train driven by the center tooth train that the first radial direction about described input gear system is symmetrical
Connecting torsion screwdriver, remaining output gear train connects torsion screwdriver or ratchet screw.
According to a further aspect in the invention, it is provided that a kind of method press-fiting IGBT module: needs are press-fited
After described IGBT module substrate is coated with heat-conducting silicone grease, it is positioned on radiator；Press mounting bolt is screwed into described
In the installing hole of IGBT module；Load onto according to the device press-fited for IGBT module recited above, and make institute
Each stating device tightens the corresponding press mounting bolt of element alignment；By tightening element to described press mounting bolt successively
Apply pretightning force and fastening force；Remove described device, press-fited.
Compared with prior art, it is an advantage of the current invention that apparatus structure is simple, can realize synchronizing firmly, complete
Becoming once to press-fit so that press-fit efficiency and significantly increase, meanwhile, symmetrical press mounting bolt synchronizes force, can effectively disappear
Remove the difference the deforming sequential everywhere impact on the final deformation of module substrate, and can guarantee that each symmetrical press mounting bolt
The pressure at place is basically identical so that press-fit effect more preferable.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.In the drawings:
Fig. 1 shows the device press-fited for IGBT module according to the present invention；
Fig. 2 shows the gear drive of the device from Fig. 1；
Fig. 3 shows according to the intergrade gear train in the gear drive of the device of Fig. 2；
Fig. 4 shows the gear drive schematic diagram of the device from Fig. 2；
Fig. 5 shows the gear drive schematic diagram of the device according to the second embodiment；
Fig. 6 shows the gear drive schematic diagram of the device according to the 3rd embodiment；
Fig. 7 shows the gear drive schematic diagram of the device according to the 4th embodiment；
Fig. 8 shows the structural representation of N-type IGBT module needing to press-fit.
In the accompanying drawings, identical parts use identical reference.Accompanying drawing is not drawn according to actual ratio.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Fig. 1 shows the device 100 press-fited for IGBT module according to the present invention, including the first fixed plate 1,
Second fixed plate 2, the gear drive 10 being arranged between the first fixed plate 1 and the second fixed plate 2, with
And driven by gear drive 10 and press mounting bolt with IGBT module matches multiple tightens element 4.
With reference to Fig. 2 it can also be seen that gear drive 10 has the input gear system 20 accepting outside moment
The output gear train 40 of screwing force can be exported to tightening element 4 accordingly with multiple.Use device 100 energy simultaneously
Tighten multiple press mounting bolt so that work efficiency improves, and makes symmetrical bolt (such as Fig. 8 of synchronization stress simultaneously
Shown press mounting bolt C, D) uniform force, press-fit effect more preferable.
Spiral shell is press-fited in order to be suitable for varying number and position in the dissimilar of IGBT module, i.e. IGBT module
Bolt is arranged, as in figure 2 it is shown, gear drive 10 also has is arranged on input gear system 20 and output gear
It is for the moment of input gear system 20 being delivered to the intergrade gear train 30 of output gear train 40 between 40.
As shown in Figure 2, Figure 4 shows, the first diametric(al) I of input gear system 20 is arranged about input gear
It it is the output gear train 50 of second radial direction II symmetry of 20.Make dependence input gear system 20 drive output gear
Train 50 rotates.First diametric(al) I is perpendicular to axial (the namely axle of gear train 20 of gear train 20
The direction of 24), the second radial direction II is perpendicular to the axial of gear train 20, both perpendicular to the first diameter side
To I.
Second radial direction II of input gear system 20 arranges the first radial direction side about input gear system 20
Arrange in the intergrade gear train 30 of I symmetry, the first radial direction I of intergrade gear train 30 about
The output gear train 40 of two radial direction II symmetries.Make dependence input gear system 20 drive center tooth train 30 turns
Dynamic, thus drive output gear train 40 to rotate.
In whole device 100, as a example by center tooth train 30, on it part be substantially distributed as it is shown on figure 3,
Driven gear 32 is set on gear shaft 34, for receiving the moment from input gear system 20, gear shaft 34
On gear 33 is set, therefore outside moment makes driven gear 32 rotate, by gear shaft 34 driven gear 33
Rotate, thus pass torque to output gear train 40.At the two ends of gear shaft 34, distribution arranges bearing 31,
For fixing be connected with the first fixed plate 1 and the second fixed plate 2.In center tooth train 30, some are used for
The fixing sleeve of each driving parts, nut and back-up ring etc. it will be apparent to those skilled in the art that, therefore
Not shown.For other gear train, its general structure is identical with center tooth train 30 with principle, and they are different
It is the most no longer described in detail known to those skilled in the art being also by part.
In drive mechanism 10, need to make gear train 30,20,40,50 etc. become an entirety, therefore set
The first fixed plate 1 and second fixed plate 2 bearing (detailed construction on each gear shaft of fixing connection are counted
Not shown) etc..Thus specifically located the position of gear train 30,20,40,50.Selectively, first
Fixed plate 1 and the second fixed plate 2 may be designed in cavity, can realize identical effect.In the first fixed plate
1 and second fixed plate 2 be also distributed providing holes 5 and hole 6, therefore gear shaft 24,34,44,54 extended
One fixed plate 1 or the second fixed plate 2 are used for receiving moment or giving moment.The such as protuberance 35 shown in Fig. 3
Can be extended out the first fixed plate 1, receive and need to act on the moment of device 100.
Fig. 4 shows concrete gear drive schematic diagram, input torque on input gear 23 so that it is
Rotate, on the one hand drive two output gears 52 to rotate, so can give press mounting bolt C, the D shown in Fig. 8
Screwing force, on the other hand driven gear 32 rotates, and then driven gear 33 rotates, thus promotes output gear
42 rotate, and may finally give press mounting bolt A, B, E, F screwing force shown in Fig. 8.
Required by IGBT module to press-fit moment less, except the input gear in input gear system 20
23 and axle 24 outside, gear 32,33,42,52 in other gear train 30,40,50 and gear shaft 34,
44,54 and accessory duralumin, hard alumin ium alloy can be used to make.I.e. meet use requirement, save again manufacturing cost.
As it is shown in figure 1, also include tightening element 4, its position in the device 100 press-fited for IGBT module
Put press mounting bolt A, B, C, D, E, F of the IGBT module press-fited corresponding to the needs shown in Fig. 8, and
It is connected on axle 44,54 by connector 3.Tightening element 4 is torsion screwdriver and/or ratchet screw, due to
Gear-driven character, two middle output gear 52 motions keep consistent, and the four of periphery output gears
Wheel 42 motion keeps consistent, meets the symmetry requirement that IGBT module press-fits.Whether put in place to judge to press-fit,
The element 4 of tightening being connected with output gear train 40 and 50 is needed to be respectively provided with at least one torsion screwdriver, when
When reaching the torque value set, stop reinforcing.It addition, after input gear 23 is applied moment, output gear
Wheel 52 is contrary with the rotation direction of output gear 42, therefore, when output gear 52 drives press mounting bolt C, D
During fastening, rely on the ratchet mechanism in torsion screwdriver or ratchet screw, make output gear 42 dally, no
Give the press mounting bolt power of correspondence；On the contrary, drive press mounting bolt A, B, E, F tight when output gear 42
Gu time, output gear 52 dallies.So, press-fiting IGBT module formula, giving input gear system as long as intersecting
20 power, just can meet bolt C, D in the middle of first the most simultaneously compressing, compress the most at the same time peripheral bolts A, B,
E、F.It is, of course, also possible to according to the gear ratio between gear, set rotational angle and intersect force, slowly by A,
B, C, D, E, F fasten.
During press-fiting IGBT module, first, it would be desirable to the IGBT module substrate press-fited is coated with heat-conducting silicone grease
After, it is positioned on radiator；Then, the installing hole of alignment IGBT module, press mounting bolt of the most manually screwing on
C-D-A-F-E-B, after manually screw on press mounting bolt A, B, C, D, E, F, it is impossible to ensure thereon
Pressure is consistent, therefore, uses torsion screwdriver afterwards screwing on, gives press mounting bolt C-D-A-F-E-B mono-successively
Individual minimum torque value, it is ensured that on each initially to press-fit condition basically identical；Again, load onto device 100,
Make to tighten element 4 and be directed at corresponding press mounting bolt A, B, C, D, E, F；The most secondary, regulate torsion screwdriver number
Value is to desired value, and first time rotates as C, D plus pretightning force, and regulation torsion screwdriver numerical value is to desired value, same
Rotate rightabout for the first time to rotate as A, B, E, F plus pretightning force；Then, more respectively A, B, C,
D, E, F add fastening force；Finally, remove device 100, press-fited.
Use device 100 so that force number of times reduces, and press-fits efficiency and significantly improves.Spiral shell is press-fited for symmetry
Bolt synchronizes force, it is possible to reduces the difference of IGBT module various piece stress deformation, and can guarantee that each symmetrical pressure
Pressure at dress bolt is basically identical.Further, use displacement quantitative and press-fit, i.e. symmetrical in IGBT module
Press mounting bolt can ensure that displacement is consistent, therefore can ignore the impact of each bolt coefficient of friction.
For adapting to press mounting bolt quantity and the position of different IGBT module, need to set different gear drives
Structure.Its general structure is identical with upper described device 100 with operation principle.Such as, for applicable p-type, G
Type has the IGBT module of four press mounting bolts, compared with the device drive mechanism shown in Fig. 4, and can be uneasy
Cogged 52.Other arranges identical, as shown in Figure 5.It is, of course, also possible to directly driven by input gear 23
Output gear 42, also can realize compressing press mounting bolt, as shown in Figure 6 simultaneously.Spiral shell is press-fited for completing there are eight
The E type IGBT module of bolt press-fits, and its drive mechanism is shown in Fig. 7, with the device drive mechanism shown in Fig. 4
Compare, be not provided with gear 52, but need to arrange one-level idler gear 63 again, and coordinate with idler gear 63
, can drive and tighten the gear 72 that element 4 rotates.It is to be provided with more than needs press mounting bolt easy to understandly
The device of output gear, under certain condition, it is also possible to meet and there is the output gear number less than this device
The IGBT module of the press mounting bolt of amount.Such as, there is the device 100 of gear drive as shown in Figure 7,
May also be used for compressing the IGBT model with four or six press mounting bolts.
The foregoing is only the preferred embodiment of the present invention, but scope is not limited thereto, appoint
What those skilled in the art, in technical scope disclosed by the invention, can easily be changed or change, and
This being altered or varied all should be contained within protection scope of the present invention.Therefore, protection scope of the present invention should
It is as the criterion with the protection domain of claims.
Claims (7)
1. the device press-fited for IGBT module, it is characterised in that include the first fixed plate, second solid
Determine plate, the gear drive being arranged between described first fixed plate and described second fixed plate, and by institute
State multiple elements of tightening that gear drive drives and with IGBT module press mounting bolt matches, described
Gear drive has and accepts an input gear system of outside moment and multiple can tighten described in corresponding
The output gear train of element output screwing force,
Described gear drive also has and is arranged between described input gear system and described output gear train
Intergrade gear train,
The output gear train that at least one is driven by described input gear system connects torsion screwdriver, and at least one
The output gear train driven by the center tooth train that the first radial direction about described input gear system is symmetrical
Connecting torsion screwdriver, remaining output gear train connects torsion screwdriver or ratchet screw.
Device the most according to claim 1, it is characterised in that described output gear train be set to off in
The central shaft centrosymmetry of described input gear system.
Device the most according to claim 1, it is characterised in that in the second footpath of described input gear system
The described intergrade gear train symmetrical about the first radial direction of described input gear system, institute is set up to side
State intergrade gear train and be provided with the institute symmetrical about described second radial direction in the radial direction along described first
State output gear train.
Device the most according to claim 3, it is characterised in that first straight in described input gear system
Footpath side sets up the described output gear train symmetrical about the second radial direction of described input gear system.
Device the most according to claim 3, it is characterised in that described input gear system, described output
Gear train and described intergrade gear train all include gear shaft, the gear being arranged on described gear shaft and are arranged on
The bearing at described gear shaft two ends, described bearing is fixed with described first fixed plate and described second fixed plate respectively
Connect.
Device the most according to claim 5, it is characterised in that described output gear train and idler gear
Described gear shaft and the described gear of system are made up of duralumin, hard alumin ium alloy.
7. the method press-fiting IGBT module, comprises the following steps:
Step one: after the described IGBT module substrate press-fited by needs is coated with heat-conducting silicone grease, be positioned on radiator；
Step 2: press mounting bolt is screwed in the installing hole of described IGBT module；
Step 3: load onto according to the dress press-fited for IGBT module according to any one of claim 1 to 6
Put, and make each of described device tighten the corresponding press mounting bolt of element alignment；
Step 4: described press mounting bolt is applied pretightning force and fastening force successively by tightening element；
Step 5: remove described device, press-fited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645754.8A CN103707050B (en) | 2013-12-04 | 2013-12-04 | A kind of apparatus and method press-fited for IGBT module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645754.8A CN103707050B (en) | 2013-12-04 | 2013-12-04 | A kind of apparatus and method press-fited for IGBT module |
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| Publication Number | Publication Date |
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| CN103707050A CN103707050A (en) | 2014-04-09 |
| CN103707050B true CN103707050B (en) | 2016-12-07 |
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| CN108566047A (en) * | 2018-06-20 | 2018-09-21 | 安徽知之信息科技有限公司 | A kind of New energy automobile motor of high efficiency and heat radiation |
| CN111590517A (en) * | 2020-06-23 | 2020-08-28 | 易智自动技术(宁波)有限公司 | Multi-screw synchronous locking device for valve |
| CN113909859A (en) * | 2021-10-22 | 2022-01-11 | 特变电工西安柔性输配电有限公司 | Flexible direct current converter valve power unit crimping equipment and crimping method |
| CN114043214B (en) * | 2021-11-25 | 2023-02-28 | 浪潮(山东)计算机科技有限公司 | Locking device |
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| CN103707050A (en) | 2014-04-09 |
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