CN110836819B - Pneumatic transmission auxiliary device for measuring pull-out load and welding spot shearing performance of welding column in CGA column planting process - Google Patents
Pneumatic transmission auxiliary device for measuring pull-out load and welding spot shearing performance of welding column in CGA column planting process Download PDFInfo
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- 238000003466 welding Methods 0.000 title claims abstract description 138
- 238000010008 shearing Methods 0.000 title claims abstract description 76
- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 24
- 230000008569 process Effects 0.000 title claims description 20
- 229910000679 solder Inorganic materials 0.000 claims abstract description 18
- 230000033001 locomotion Effects 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims description 21
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000002146 bilateral effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a pneumatic transmission auxiliary device for measuring CGA post planting technology post draws off load and solder joint shearing property, it relates to an atmospheric transmission device who utilizes the cylinder, concretely relates to a pneumatic transmission auxiliary device for measuring post draws off load and solder joint shearing property. The invention aims to solve the problems that the existing drawing test PCB is uneven in clamping, welding columns are easy to be damaged mechanically, the welding columns cannot be pulled out vertically upwards at a constant speed and uniform force, and welding points with larger diameters cannot be tested. The device comprises an object stage assembly, a positioning plate assembly, a positioning hanger assembly, a push-pull force meter assembly, a fixture body assembly, a push-type broach assembly, a bottom plate and top plate assembly and a vertical plate assembly, wherein the positioning hanger assembly is arranged in a square groove hole slot of the top plate assembly, and the object stage assembly is arranged in the positioning plate assembly and realizes vertical and uniform upward and downward movement by means of a power device (air cylinder). The invention belongs to the field of electronic products.
Description
Technical Field
The invention relates to a pneumatic transmission device utilizing an air cylinder, in particular to a pneumatic transmission device for measuring pull-out load and shearing performance of a CGA welding column, and belongs to the field of electronic products.
Background
The CGA interconnection means that in a solder ball, a solder column is implanted into the solder ball through related column implanting equipment; the interconnection form is characterized in that the solder columns are used for replacing 10Sn90Pb high Pb solder columns, so that the pollution to the environment is reduced to a certain extent; in addition, the CGA interconnection is beneficial to improving the packaging density, and the mechanical property, the heat dissipation performance and the electrical property are better, and part of stress can be released through the deformation of the welding columns in the service process, so that the CGA interconnection is widely applied to the field of microelectronic packaging.
When a precise micro bench drill is used for the CGA column planting process, the connection strength of the brazing filler metal and the welding column is of great importance; the method directly determines the mechanical property of the CGA interconnection and indirectly reflects the condition of an interface layer to a certain extent, so that the connection strength of the CGA interconnection and the interface layer is necessary to be measured; the method comprises the following specific operations that the bench vice is fixed on a table top, the two side surfaces of a PCB are clamped by the jaw of the bench vice, the jaw clamp of the push-pull force meter is fixed on the push-pull force meter through threaded connection, the welding column is clamped by the jaw clamp of the push-pull force meter, and then the welding column is drawn vertically upwards; the shearing strength of the welding spot is measured by using a special shearing tester in a laboratory, the corresponding push broach displacement, the push broach speed and the push broach height are set according to the diameter of the welding spot, and the shearing strength is displayed on a screen of the shearing tester after shearing is finished. The following problems exist with the current devices of this type:
(1) clamping the side surface of the PCB with the thickness of about 2.0mm by using a vice jaw, and clamping the PCB to incline possibly to prevent the welding column from being pulled out vertically;
(2) the welding column is soft, the clamping surface of the jaw clamp is rough, and the welding column can be seriously damaged when being clamped;
(3) the clamping force for clamping the welding column by using the related jaw clamp is limited, and the maximum clamping force is about 126N through the verification of related experiments, so that the drawing test with high connection strength cannot be tested, and the clamping welding column can shake;
(4) the push-pull dynamometer jaw clamp is used for clamping the welding column, the welding column is likely to be touched or the influence of clamping force on a welding column/brazing filler metal interface is large, the drawing test process is operated manually, the welding column is difficult to be pulled out of a welding spot by uniform force and vertical force, and the drawing strength of the welding column is greatly influenced.
(5) Measuring the shearing strength of a welding spot, wherein the shearing instrument for the experiment is not suitable for shearing a slightly larger welding spot aiming at the welding spot with the diameter not more than 1.0mm, otherwise, the shearing instrument exceeds the measuring range to damage the push broach; most of shearing instruments used in laboratories are special, the principle is that the back-and-forth movement of the push broach is controlled through computer programming, and non-pneumatic hydraulic transmission is adopted, so that the device is single in function, and the device can also be used for measuring the shearing displacement of welding points.
Disclosure of Invention
The invention provides a method for measuring pull-off load, shear strength and shear displacement of CGA/solder welding spots by using air cylinders, and aims to solve the fatal defects that the existing equipment such as a small bench vice, a push-pull force meter jaw clamp, a special shearing instrument and the like is utilized to measure the pull-off load and shear strength of the welding spots, the PCB is not horizontal, so that the welding spots cannot be pulled out vertically and upwards, uniform force is difficult to ensure to pull out the welding spots, welding spots with higher and larger connection strength cannot be measured, mechanical damage to the welding spots and welding column/solder interfaces and micro-shaking of the clamped welding columns occur.
The technical scheme adopted by the invention for solving the problems is as follows: the device mainly comprises a bottom plate assembly, two side vertical plates, a first power unit 36, a second power unit 37 (air cylinders), a positioning plate, an object stage (comprising a drawing device side and a shearing strength side), a clamp body, a sleeve, a push-pull dynamometer, a fixing part of the push-pull dynamometer, a push broach, a positioning hanging frame and a top plate assembly, wherein the power devices (air cylinders) are respectively arranged at the upper part of a top plate and the upper part of a base, and the second power unit 37 (air cylinder 37) on the top plate is positioned at the centers of two plates of the positioning hanging frame; when the device is used for testing the shearing strength of a welding spot, firstly, the hanging frame is fixed and positioned by utilizing bolts at two sides, the second power unit 37 does not work, the hook on the push-pull force meter is detached, the push-pull tool device is replaced, the first power unit 36 (air cylinder 36) is installed on the base, the positions of the shearing side of the objective table and the first power unit 36 are adjusted, the force-displacement sensor is installed on the push-pull force meter, the objective table vertically moves upwards at a constant speed under the driving of the power device, the welding spot is contacted with a clamping groove of the push-pull tool, and the shearing force and the shearing displacement are convenient to read; the upper surfaces of the base and the top plate close to the grooves of the pneumatic cylinder part are convenient to install an air supply and exhaust pipe for providing power.
When the device is used for testing the pull-out load, the objective table and the positioning plate are fixed by utilizing bolt connection; the PCB where the CGA welding spot welding column is located is placed on the drawing side of the vertical plate objective table to achieve positioning action; the positioning and clamping actions of the welding column are realized by utilizing the special fixture body and the sleeve; the positioning action of the push-pull dynamometer container is realized through bolt holes and bolts on two sides of the positioning hanging frame; the push-pull dynamometer is fixed by the push-pull dynamometer container; the push-pull dynamometer is used for measuring the instantaneous pull-off load action; measuring the shearing force and the shearing displacement action of the welding spot by using a push-pull dynamometer; a second power unit 37 (air cylinder 37) is arranged below the top plate, the air inlet and supply pipe is used for balancing the air cylinder, and finally the internal piston plate is jacked up, so that a power rod connected with the piston plate moves vertically upwards at a constant speed and drives a positioning hanging rack to move together, and the action of drawing the welding column is realized; the connection action of the object stage and a piston rod of the first power unit 36 (the air cylinder 36) is realized by utilizing the circular slot; the PCB where the CGA welding spot welding column is located is placed on the shearing side of the vertical plate objective table to achieve positioning action; the bolt connection is utilized to realize the fixing action of the push broach and the screw rod on the push-pull dynamometer; the fixing action of the top plate and the two side plates of the positioning hanging rack is realized through the bolt connection; the first power unit 36 (air cylinder 36) is used for driving the objective table to realize vertical upward and uniform motion; the push broach with the circular arc structure is just tangent to the spherical crown welding point moving vertically upwards so as to realize shearing action.
The invention has the beneficial effects that:
first, the pneumatic transmission device of the present invention measures pull-off load and shear strength, and besides the values of the two, the two are measured on almost the same device, which is beneficial to improving efficiency.
Secondly, the welding column can be clamped through the thread clamping and elastic deformation mechanism, the centering precision is high, the clamping force is high, the welding column can be positioned in the center of the clamp and can be clamped, and the problems that the welding column cannot be pulled out vertically, the welding column is not perpendicular to a jaw face when being clamped, mechanical damage is caused in the pulling process of the welding column and the like are solved or reduced; compared with the existing jaw clamp utilizing the WJJ-01 push-pull dynamometer, the inner side surface of the elastic centering tool of the device is also in a deep cylindrical shape, so that the mechanical damage to a welding column during pull-off load measurement can be reduced.
Third, the first power unit 36 and the second power unit 37 (cylinders 36, 37) of the invention adopt double-acting single-piston pneumatic cylinders, i.e. the air cavities on both sides of the piston can compress air to realize bidirectional movement; the cylinder operates stably, the power rod is guaranteed to do uniform and vertical motion, the cylinder piston is stressed uniformly, and the problems that force is not uniform, uniform and the welding column cannot be pulled out vertically in the manual welding column drawing process are solved.
Fourthly, the push-pull force meter fixing part and the push-pull force meter are connected with the two side plates of the positioning hanging rack through bolts, so that the positioning hanging rack is convenient to disassemble and convenient to measure pull-off load and welding spot shearing strength; the vertical plate is connected with the bearing plate by using a bolt when measuring the pull-off load, and the first power unit 36 (the air cylinder 36) does not work; when the shearing strength is measured, the lower end of the vertical plate is vertically connected with a power rod of a first power unit 36 (an air cylinder 36), and the vertical plate is not connected with a bearing plate bolt; compared with the prior art, the operation is flexible and convenient; meanwhile, the verticality of the welding column, the push-pull dynamometer and the push knife and the levelness of the PCB are guaranteed, and the measuring result is more accurate.
Fifthly, the invention is especially suitable for measuring the pull-out load of the welding column with larger connection strength and the shear strength of the welding spot with larger diameter.
Sixthly, the force-displacement sensor is arranged on the push-pull dynamometer, so that the shearing force and the shearing displacement can be conveniently read through curve change.
Drawings
FIG. 1 is a view showing the construction of a drawing apparatus according to the present invention;
FIG. 2 is a partial enlarged view of a drawing spot;
FIG. 3 is an enlarged view of a portion of the push-pull dynamometer fastening mechanism;
FIG. 4 is a block diagram of the shearing module of the present invention;
FIG. 5 is a partial enlarged view of a shear weld;
FIG. 6 is a partial enlarged view of the stage and the alignment plate;
FIG. 7 is a schematic view of a stage with CGA solder joints;
FIG. 8 is a schematic view of the positioning plate assembly;
FIG. 9 is a schematic structural view of a riser assembly;
FIG. 10 is a schematic view of a positioning hanger assembly;
FIG. 11 is a schematic view of a push-pull force gauge assembly;
FIG. 12 is a schematic view of the top plate assembly;
FIG. 13 is a schematic view of the assembly of the chuck body;
FIG. 14 is a schematic view of the clamp assembly and sleeve assembly;
FIG. 15 is a schematic view of a push-type broach assembly;
fig. 16 is a schematic structural view of a base plate assembly.
Detailed Description
The first embodiment is as follows:
the embodiment is described with reference to fig. 1 to 16, and the pneumatic transmission auxiliary device for measuring the pull-out load and the welding spot shearing performance of the welding column in the CGA column planting process in the embodiment includes an object stage and object stage positioning plate mechanism, a positioning hanger assembly, a tension measuring assembly, a clamp body assembly, a push broach assembly, a power device assembly, a top plate and a bottom plate assembly, wherein the clamp body assembly and the tension measuring assembly are mounted on the positioning hanger assembly, the positioning hanger is mounted on the top plate assembly, the clamp body assembly is located above the object stage assembly, and a second power unit 37 is mounted above the top plate; the centering action of the welding column and the fixture body assembly is realized through the movement of the objective table assembly and the first power unit 36; the clamp body assembly is used for realizing vertical connection and clamping actions with the CGA welding spot welding column on the PCB; the vertical uniform upward movement of the positioning hanger assembly and the vertical uniform upward movement of the fixture body assembly are realized through the second power unit 37.
The second embodiment is as follows:
the present embodiment is described with reference to fig. 6 to 9, and the objective table, the positioning plate assembly and the vertical plate assembly of the pneumatic transmission auxiliary device for measuring the pulling-out load and the welding spot shearing performance of the welding column in the CGA column-planting process according to the present embodiment include an objective table pulling-out side 1, a CGA welding spot welding column 2 on a PCB, an objective table main body 3, an objective table shearing side 4, an objective table bottom circular groove 5, a groove 6, a vertical plate main body 42, a first sliding fastening bolt 43, a vertical plate bolt sliding groove 44, a first positioning bolt 7, a square through hole 8, an objective table positioning plate 9 and a first bolt hole 10, the CGA welding spot welding column 2 on the PCB is connected to the objective table pulling-out side 1 or the objective table shearing side 4 through the groove 6, the objective table pulling-out side 1 is welded to one side of the objective table main body 3, the objective table shearing side 4 is welded to the other side of the objective table main body 3, and the objective table pulling-out side 1 and the objective table shearing side 4 are symmetrically arranged with respect to the objective table main body 3, objective table main part 3 is through a positioning bolt 7 fixed mounting on objective table locating plate 9, and objective table locating plate 9 is fixed on both sides riser main part 42 through a slip fastening bolt 43 in both sides, and a slip fastening bolt 43, riser bolt sliding tray 44 are located riser main part 42, and objective table main part 3 lower extreme links to each other through riveting and the piston rod of a power unit 36. Other components and connections are the same as those in the first embodiment.
The object stage drawing side 1 and the object stage shearing side 4 are fixed through the groove 6 on the CGA welding spot welding column 2 on the PCB, the object stage main body 3 is fixed with the object stage positioning plate 9 through the first positioning bolt 7, the first sliding fastening bolt 43 slides on the vertical plate main body 42 through the vertical plate bolt sliding groove 44, and the object stage positioning plate 9 is fixed with the vertical plate main body 42 through the first sliding fastening bolt 43.
The third concrete implementation mode:
the positioning hanger assembly, the push-pull force meter assembly and the top plate assembly of the pneumatic transmission auxiliary device for measuring the pulling-out load and the welding spot shearing performance of the welding column in the CGA column planting process according to the embodiment are described with reference to FIGS. 10 to 12, and the positioning hanger assembly, the push-pull force meter assembly and the top plate assembly according to the embodiment include a positioning hanger double-sided four-bolt hole 14, a positioning hanger main body 11, a two-number positioning bolt 12, a three-number bolt hole 13, a circular groove hole 15, a two-number fastening bolt 16, a push-pull force meter 17, a push-pull force meter container 18, a three-number fixing bolt 19, a push-pull force meter fastening mechanism 20, a five-number bolt hole 21, a six-number bolt hole 22, a push-pull force meter hook nut 23, a push-pull force meter hook 24, a one-air duct port 31, a two-number power unit 37, a two-number bolt hole 38, a top plate assembly one-number square groove hole 39, a top plate 40, a one-number fastening bolt 41 and a two-square groove hole, the push-pull force meter hook nut 23 is sleeved on the push-pull force meter hook 24 and is connected with the push-pull force meter 17 by a bolt, the push-pull force meter 17 is placed in the push-pull force meter container 18 and is fastened and positioned by a push-pull force meter fastening mechanism 20, a third fixing bolt 19 and a fifth bolt hole 21, and the push-pull force meter container 18 is fixed with the positioning hanger main body 11 through a six-side bolt hole 22; the positioning hanger main body 11 is connected with the top plate 40 through a first square groove hole 39 of the top plate assembly, a second power unit 37 is connected with the top plate 40 through a second square groove hole, the second power unit 37 is fixed on the top plate 40 through a first fastening bolt 41, the push-pull dynamometer container 18 is fixedly installed below the top plate 40, and the positioning hanger main body 11 is in bolt fastening connection with the top plate 40 at a fourth bolt hole 14 by a second fastening bolt 16 during a shearing test.
The push-pull dynamometer hook 24 is in bolted connection with the push-pull dynamometer 17 through the push-pull dynamometer hook nut 23, the push-pull dynamometer 17 is clamped and positioned in the push-pull dynamometer container 18 through the push-pull dynamometer fastening mechanism 20, the third fixing bolt 19 and the fifth bolt hole 21, the push-pull dynamometer container 18 is connected with the positioning hanger main body 11 through the second positioning bolt 12 and the sixth bolt hole 22, the positioning hanger main body 11 is connected with the top plate 40 through the top plate assembly first square groove hole 39, and the positioning hanger main body 11 drives the push-pull dynamometer 17 to vertically move upwards at a constant speed through the second power unit 37; through the above operations, the positioning hanger main body and the push-pull dynamometer 17 can move upwards at a constant speed in the Z direction; other components and connections are the same as those in the first embodiment.
The fourth concrete implementation mode:
referring to fig. 13-15, fig. 9 illustrates the embodiment of the present invention, in which the push-type broach assembly and the vertical plate assembly include a clamp hook 25, a clamp body 26, an open structure and semicircular slot 27, a sleeve 28, a push-type broach body 29, a push-type broach top threaded hole 30, a push-type broach arc groove, a vertical plate body 42, a first sliding fastening bolt 43 and a vertical plate bolt sliding groove 44, the CGA welding spot welding column 2 on the PCB plate is tightly bolted with the semicircular slot 27 and the sleeve 28 through the open structure, the clamp body hook 25 is connected with a push-pull force meter hook 24, the welding column drawing action is completed by the uniform vertical upward movement of the push-pull force meter 17 and the positioning hanger main body 11 under the drive of the second power unit 37; the push broach main body 29 is fixedly connected with a screw rod at the lower end of a push-pull dynamometer 17 through a push broach top threaded hole 30, the second fastening bolt 16 is fixedly connected with a top plate 40 through a fourth bolt hole 14 on two sides of the positioning hanger, the first positioning bolt 7 is dismounted, and the fit action of a CGA welding spot welding column 2 on a PCB plate on the shearing side 4 of the objective table and a welding spot arc surface of the push broach main body 29 is completed through the first sliding fastening bolt 43, a vertical plate bolt sliding groove 44, a fourth fastening bolt 34 on the bottom plate and a first power unit 36; the piston rod in the first power unit 36 moves upwards to drive the CGA welding spot welding column 2 on the PCB on the shearing side 4 of the objective table to move upwards vertically at a constant speed, the CGA welding spot welding column 2 on the PCB on the shearing side 4 of the objective table is pushed away by the push broach main body 29, and the shearing force and the shearing displacement are read by a force-displacement sensor on the push-pull dynamometer 17; other components and connection relationships are the same as those in the second embodiment.
The fifth concrete implementation mode:
the embodiment is described with reference to fig. 12 and 16, and the bottom plate and top plate assembly of the pneumatic transmission auxiliary device for measuring the pull-off load and the welding spot shearing performance of the welding column in the CGA column planting process in the embodiment includes a first air guide pipe orifice 31, a second air guide pipe orifice 32, a bottom plate 33, a bottom plate fourth fastening bolt 34, a bottom plate square groove 35, a first power unit 36 (air cylinder 36), a second power unit 37 (air cylinder 37), a second bolt hole 38, a top plate assembly first square groove hole 39, a top plate 40, a first fastening bolt 41 and a second square groove hole, in a shearing test, the second bolt hole 38 is connected with the positioning rack double-side fourth bolt holes 14 to fix the positioning rack main body 11, the first fastening bolt 41 realizes the fixing of the second power unit 37, the second square groove hole is connected with the second power unit 37, the top plate assembly first square groove hole 39 realizes the connection with the positioning rack main body 11, the first air guide pipe orifice 31 of the top plate component and the second air guide pipe orifice 32 of the bottom plate component are respectively connected with air ports of a second power unit 37 and a first power unit 36, the square groove 35 of the bottom plate is connected with the first power unit 36 to realize the installation and X-direction movement of the first power unit 36, the fourth fastening bolt 34 of the bottom plate realizes the fixation of the first power unit 36, and the first power unit 36 is driven to work by inputting compressed air; in a pull-out load measurement test, the first positioning bolt 7 fastens the objective table main body 3, the first sliding fastening bolt 43 fixes the objective table positioning plate 9 and enables the CGA welding spot welding column 2 on the PCB to be vertically centered with the clamp body main body 26, and the clamp body main body 26 and the sleeve 28 clamp the CGA welding spot welding column 2 on the PCB to be pulled under the driving of the second power unit 37.
The first power unit 36 is placed in the bottom plate square groove 35; the first power unit 36 is fastened in the bottom plate square groove 35 by the bottom plate fourth fastening bolt 34; the second power unit 37 is placed in the second square groove hole and fixed in the second square groove hole by the first fastening bolt 41; the positioning hanger main body 11 is inserted into the first square groove hole 39 of the top plate assembly; in the shear test, the second bolt hole 38 and the fourth bolt hole 14 on the two sides of the positioning hanger are fastened and connected through the second fastening bolt 16 on the two sides of the positioning hanger, so that the fixing action of the main body 11 of the positioning hanger is realized; the first power unit 36 and the second power unit 37 are driven to complete work by inputting compressed air; the other components and the connection relationship are the same as those of the second, third and fifth embodiments.
The sixth specific implementation mode:
the present embodiment is described with reference to fig. 1 to 16, and the material of the PCB pad of the pneumatic transmission auxiliary device for measuring the pulling-out load and the shearing performance of the solder joint of the CGA post-implantation process may be any one of Cu, Au, Ag, and Ni, or a multi-layer metal film pad formed by combining Cu, Au, Ag, and Ni; other components and connection relations are the same as those of the first to fifth embodiments.
The seventh embodiment:
the embodiment is described with reference to fig. 1 to 16, and the CGA weld column material of the pneumatic transmission auxiliary device for measuring the pulling-out load and the weld spot shearing performance of the CGA column planting process may be any one of Cu, brass, iron-nickel alloy and solder weld column; other components and connection relationships are the same as those in the first to sixth embodiments.
The specific implementation mode is eight:
the embodiment is described with reference to fig. 1 to 16, and the CGA solder joint of the pneumatic transmission auxiliary device for measuring the pulling-off load and the shear property of the solder joint in the CGA column planting process according to the embodiment may be any one of 63Sn37Pb, sn3.0ag0.5cu, sn0.3ag0.7cu, Sn58Bi and sn0.7cu, or may be formed by combining 63Sn37Pb, sn3.0ag0.5cu, sn0.3ag0.7cu, Sn58Bi and sn0.7cu; other components and connection relationships are the same as those in the first to seventh embodiments.
The specific implementation method nine:
the embodiment is described with reference to fig. 1 to 16, and the diameter of the solder column or solder column of the pneumatic transmission auxiliary device for measuring the pulling-off load and the shearing performance of the solder column in the CGA column planting process according to the embodiment may be any one of 300 μm, 400 μm, 500 μm, 600 μm and 700 μm; other components and connection relationships are the same as those in the first to eighth embodiments.
The detailed implementation mode is ten:
the embodiment is described with reference to fig. 1 to 16, the diameter of the welding spot of the pneumatic transmission auxiliary device for measuring the pulling-off load and the shearing performance of the welding spot in the CGA column-planting process according to the embodiment may be any one of 300 μm, 400 μm, 500 μm, 600 μm, 700 μm, 800 μm, 1000 μm, 1200 μm and 1500 μm; other components and connection relationships are the same as those in the first to ninth embodiments.
Examples
Example 1:
the invention relates to an air pressure transmission auxiliary device for measuring pulling-out load and welding spot shearing performance of a welding column in a CGA column planting process, which comprises the following steps:
step one, placing a 63Sn37Pb welding spot with the diameter to be measured being 1000 microns, the welding pad being a Cu welding pad and the welding column being Cu (the diameter being 400 microns) into a drawing side groove of an objective table:
the CuCGA/63Sn37Pb welding spot which is completed by column planting in the new mode is connected with a groove on the drawing side of a carrier in a PCB, and a carrier main body is fastened on a positioning plate by a bolt to prevent the carrier main body from moving;
step two, installing and positioning the hanger assembly:
vertically inserting the positioning hanging rack into a first square groove hole on two sides of a top plate assembly in the device, wherein the size of the first square groove hole is completely the same as that of two side plates of the positioning hanging rack, a circular groove is formed in the top of the positioning hanging rack and used for connecting a piston rod of an air cylinder, and finally, the positioning hanging rack and the top plate are fastened by two bolts to prevent the positioning hanging rack from moving;
step three, installing a push-pull force gauge assembly and a clamp body assembly:
fixing the push-pull dynamometer in the push-pull dynamometer container through a bolt and a push-pull dynamometer fastening mechanism, opening a switch of the push-pull dynamometer and pressing a 'SET' button to record pull-off load, fastening the push-pull dynamometer on a positioning hanger body through bolts at two sides, screwing a push-pull dynamometer hook on a bolt rod below the push-pull dynamometer and screwing the bolt rod with a nut; the clamp body adopts a rotary clamping and elastic deformation mechanism, a slotted hole of the clamp body adopts a cylindrical shape to reduce the mechanical damage to the Cu column, and the clamp body and the sleeve are hung on a push-pull dynamometer hook through a hook;
adjusting the positions of the center of the fixture body, the Cu column, the positioning plate and the cylinder:
the Cu column is clamped by the clamp body in a rotating mode, the fastening bolt capable of sliding on the vertical plate is adjusted, the air cylinder on the bottom plate is adjusted, the air cylinder can move in the square groove of the bottom plate, finally, the center of the clamp body is perpendicular to the axial direction of the Cu column and is on a horizontal line, the object stage and the axial direction of a piston rod of the air cylinder are also on a horizontal line, and the sliding fastening bolt on the vertical plate and the fixing bolt on the bottom plate are screwed to prevent the positioning plate and the air cylinder from moving;
step five, opening the positioning hanging rack bolt, operating the device and recording numerical values:
the fastening bolts on the two sides of the positioning hanger are opened, compressed air is introduced into the air guide tube of the air cylinder, when the air inlet pressure and the air outlet pressure reach balance, the gravity of the positioning hanger, the clamp body, the push-pull dynamometer mechanism and the like is overcome to do work, the piston rod of the air cylinder can vertically move upwards at a constant speed to drive the positioning hanger, the push-pull dynamometer mechanism and the clamp body to move upwards at a constant speed, and the Cu column is pulled out of a CuCGA/63Sn37Pb welding spot; the pull-out load (unit: N) at the moment of pulling out the Cu column was recorded by a push-pull dynamometer.
Example 2:
the invention relates to an air pressure transmission auxiliary device for measuring pulling-out load and welding spot shearing performance of a welding column in a CGA column planting process, which comprises the following steps:
step one, placing a 63Sn37Pb welding point with the diameter to be measured being 1000 microns, the welding pad being a Cu welding pad and the welding column being Cu (the diameter being 400 microns):
the CuCGA/63Sn37Pb welding spot which is completed by column planting in the new mode is connected with a groove on the shearing side of a carrying table in the PCB, and a fastening bolt on a positioning plate is opened;
step two, installing and positioning the hanger assembly:
vertically inserting the positioning hanging rack into a first square groove hole on two sides of a top plate assembly in the device, wherein the size of the first square groove hole is completely the same as that of two side plates of the positioning hanging rack, a circular groove is formed in the top of the positioning hanging rack and used for connecting a piston rod of an air cylinder, and finally, the positioning hanging rack and the top plate are fastened by two bolts to prevent the positioning hanging rack from moving;
step three, installing a push-pull force meter assembly and a push-pull tool assembly:
fixing the push-pull dynamometer in the push-pull dynamometer container through a bolt and a push-pull dynamometer fastening mechanism, opening a switch of the push-pull dynamometer and pressing a 'SET' button to record shearing force and shearing displacement, fastening the push-pull dynamometer on the positioning hanger main body through bolts at two sides, and screwing a push broach device on a bolt rod below the push-pull dynamometer; the lower part of the push broach is provided with an arc-shaped groove for matching with a spherical CuCGA/63Sn37Pb welding point;
fourthly, adjusting the positions of the push broach, the spherical crown CuCGA/63Sn37Pb welding spot, the positioning plate and the cylinder:
the push broach groove is used for fitting the spherical crown CuCGA/63Sn37Pb welding spot, the fastening bolt which can slide on the vertical plate is adjusted, the air cylinder on the bottom plate is adjusted, the air cylinder can move in the square groove of the bottom plate, finally, the push broach groove is fitted with the spherical crown CuCGA/63Sn37Pb welding spot and is vertical to the vertical line, the object stage and the axial direction of the piston rod of the air cylinder are also on the same horizontal line, and the sliding fastening bolt on the vertical plate and the fixing bolt on the bottom plate are screwed to prevent the positioning plate and the air cylinder from moving;
step five, introducing compressed air into the air cylinder, operating the device and recording numerical values:
tightening fastening bolts at two sides of the positioning hanging rack, introducing compressed air into an air guide pipe of an air cylinder on the air bottom plate, overcoming the gravity of an object stage and the like to do work after air inlet and exhaust pressure is balanced, enabling a piston rod of the air cylinder to vertically move upwards at a constant speed, driving the object stage main body and a CuCGA/63Sn37Pb welding point to move upwards at a constant speed, and enabling the arc surface of the push broach to be matched with the spherical crown-shaped welding point to finish shearing action; a force-displacement sensor is arranged in the push-pull dynamometer and used for recording the change of the shearing displacement along with the shearing load, and the shearing displacement and the peak value (unit: N) of the shearing force at the moment are recorded when the shearing force is sharply reduced.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. The utility model provides a pneumatic transmission auxiliary device for measuring CGA post planting technology weld column pulls out load and solder joint shearing property which characterized in that: the device comprises an object stage assembly, an object stage positioning plate mechanism, a positioning hanger assembly, a tension measuring assembly, a fixture body assembly, a push broach assembly, a power device assembly, a top plate assembly and a bottom plate assembly; the fixture body assembly and the tension measuring assembly are mounted on the positioning hanger assembly, the positioning hanger is mounted on the top plate assembly, the fixture body assembly is located above the objective table assembly, and the second power unit (37) is mounted above the top plate; the centering action of the welding column and the clamp body assembly is realized through the movement of the objective table assembly and the first power unit (36); the clamp body assembly is used for realizing vertical connection and clamping actions with the CGA welding spot welding column (2) on the PCB; vertical uniform upward movement of the positioning hanger assembly and vertical uniform upward movement of the clamp body assembly are realized through a second power unit (37);
the objective table assembly and the objective table positioning plate mechanism comprise an objective table drawing side (1), CGA welding spot welding columns (2) on a PCB (printed circuit board), an objective table main body (3), an objective table shearing side (4), an objective table bottom circular groove (5), a groove (6), a vertical plate main body (42), a sliding fastening bolt (43), a vertical plate bolt sliding groove (44), a positioning bolt (7), a square through hole (8), an objective table positioning plate (9) and a bolt hole (10), wherein the CGA welding spot welding columns (2) on the PCB are connected to the objective table drawing side (1) or the objective table shearing side (4) through the groove (6), the objective table drawing side (1) is welded on one side of the objective table main body (3), the objective table shearing side (4) is welded on the other side of the objective table main body (3), and the objective table drawing side (1) and the objective table shearing side (4) are symmetrically arranged relative to the objective table main body (3), the object stage main body (3) is fixedly arranged on the object stage positioning plate (9) through a first positioning bolt (7), the object stage positioning plate (9) is fixed on the vertical plate main bodies (42) on two sides through first sliding fastening bolts (43) on two sides, the first sliding fastening bolt (43) and the vertical plate bolt sliding groove (44) are positioned on the vertical plate main bodies (42), and the lower end of the object stage main body (3) is connected with a piston rod of a first power unit (36) through riveting;
the clamp body assembly and the push broach assembly comprise a clamp body hook (25), a clamp body main body (26), an open structure, a semicircular groove hole (27), a sleeve (28), a push broach main body (29), a push broach top threaded hole (30) and a push broach arc groove, the CGA welding spot welding column 2 on the PCB is tightly connected with the semicircular groove hole (27) and the sleeve (28) through the open structure and the semicircular groove hole (27), the sleeve (28) is tightly connected with the clamp body main body (26) through bolts, the clamp body hook (25) is connected with a push-pull dynamometer hook (24), and the action of drawing the welding column is completed by means of uniform-speed vertical upward movement of the push-pull dynamometer (17) and the positioning hanger main body (11) under the driving of a second power unit (37); the push broach main body (29) is fixedly connected with a screw rod at the lower end of a push-pull dynamometer (17) through a push broach top threaded hole (30), a second fastening bolt (16) is fixedly connected with a top plate (40) through a positioning hanger bilateral fourth bolt hole (14), the first positioning bolt (7) is dismounted, and the matching action of a CGA welding spot welding column (2) on a PCB on the shearing side (4) of the objective table and a welding spot arc surface of the push broach main body (29) is completed through the first sliding fastening bolt (43), a vertical plate bolt sliding groove (44), a bottom plate fourth fastening bolt (34) and a first power unit (36); the piston rod in the first power unit (36) moves upwards to drive the CGA welding spot welding column (2) on the PCB on the shearing side (4) of the objective table to move upwards vertically at a constant speed, the CGA welding spot welding column (2) on the PCB on the shearing side (4) of the objective table is pushed away through the push broach main body (29), and the shearing force and the shearing displacement are read through a force-displacement sensor on the push-pull dynamometer (17).
2. The pneumatic transmission auxiliary device for measuring the pulling-out load and the shearing performance of the welding point of the welding column in the CGA column planting process according to claim 1, is characterized in that: the positioning hanger component, the tension measuring component and the top plate component comprise four bolt holes (14) on two sides of the positioning hanger, a positioning hanger main body (11), a second positioning bolt (12), a third bolt hole (13), a circular groove hole (15), a second fastening bolt (16), a push-pull force meter (17), a push-pull force meter container (18), a third fixing bolt (19), a push-pull force meter fastening mechanism (20), a fifth bolt hole (21), a sixth bolt hole (22), a push-pull force meter hook nut (23), a push-pull force meter hook (24), a first air duct orifice (31), a second power unit (37), a second bolt hole (38), a first square groove hole (39) of the top plate component, a top plate (40), a first fastening bolt (41) and a second square groove hole, wherein the push-pull force meter hook nut (23) is sleeved on the push-pull force meter hook (24) and is connected with the push-pull force meter (17) through a bolt, the push-pull dynamometer (17) is placed in a push-pull dynamometer container (18) and is fastened and positioned by a push-pull dynamometer fastening mechanism (20), a third fixing bolt (19) and a fifth bolt hole (21), and the push-pull dynamometer container (18) is fixed with the positioning hanger main body (11) through a six-number threaded hole (22) on two sides; the positioning hanger main body (11) is connected with the top plate (40) through a first square groove hole (39) of the top plate assembly, a second power unit (37) is connected with the top plate (40) through a second square groove hole, the second power unit (37) is fixed on the top plate (40) through a first fastening bolt (41), the push-pull dynamometer container (18) is fixedly installed below the top plate (40), and the second fastening bolt (16) is utilized to realize the bolt fastening connection of the positioning hanger main body (11) and the top plate (40) at a fourth bolt hole (14) during a shearing test.
3. The pneumatic transmission auxiliary device for measuring the pulling-out load and the shearing performance of the welding point of the welding column in the CGA column planting process according to claim 1, is characterized in that: the top plate assembly and the bottom plate assembly comprise a first air guide pipe orifice (31), a second air guide pipe orifice (32), a bottom plate (33), a bottom plate fourth fastening bolt (34), a bottom plate square groove (35), a power unit (36), a second power unit (37), a second bolt hole (38), a top plate assembly first square groove hole (39), a top plate (40), a first fastening bolt (41) and a second square groove hole, the second bolt hole (38) is connected with the positioning hanger double-side fourth bolt hole (14) to fix the positioning hanger main body (11) in a shearing test, the first fastening bolt (41) realizes the fixation of the second power unit (37), the second square groove hole is connected with the second power unit (37), the first square groove hole (39) of the top plate assembly realizes the connection with the positioning hanger main body (11), the first air guide pipe orifice (31) of the top plate assembly, The second air guide pipe orifice (32) of the bottom plate component is respectively connected with the air ports of the second power unit (37) and the first power unit (36), the square groove (35) of the bottom plate is connected with the first power unit (36) to realize the installation and X-direction movement of the first power unit (36), the fourth fastening bolt (34) of the bottom plate realizes the fixation of the first power unit (36), and the first power unit (36) is driven to work by inputting compressed air; in a pull-out load measurement test, a first positioning bolt (7) fastens the objective table main body (3), a first sliding fastening bolt (43) fixes the objective table positioning plate (9) and enables the CGA welding spot welding column (2) on the PCB to be vertically aligned with the clamp body main body (26), and the clamp body main body (26) and the sleeve (28) clamp the CGA welding spot welding column (2) on the PCB to be driven by a second power unit (37) to finish drawing.
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| CN116818534A (en) * | 2023-08-30 | 2023-09-29 | 江铃汽车股份有限公司 | Wave soldering quality detection method and device |
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