CN100520344C - Multiple way fatigue loading clamping device for x-shape spot welding test sample - Google Patents
Multiple way fatigue loading clamping device for x-shape spot welding test sample Download PDFInfo
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- CN100520344C CN100520344C CNB2006101128101A CN200610112810A CN100520344C CN 100520344 C CN100520344 C CN 100520344C CN B2006101128101 A CNB2006101128101 A CN B2006101128101A CN 200610112810 A CN200610112810 A CN 200610112810A CN 100520344 C CN100520344 C CN 100520344C
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- clamp body
- trapezoid block
- pedestal
- block
- center line
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Abstract
Belonging to area of mechanism and automobile industry, the clamping device includes up clamp body (UCB), and low clamp body (LCB). Being capable of moving along central line, trapezoid block is setup on up surface of base in UCB. Being setup at two sides of the trapezoid block, wedge shaped block clutches can be glided driven by the trapezoid block. Being formed between the other side faces of the wedge shaped block clutches and the base, parallelogrammic flutes is in use for the spot welding samples to be placed into. Structure of LCB is same as the structure of UCB described above. Locking disk is setup on the up surface of UCB. A dovetail slot is setup on low surface of LCB. A slide rail can be glided along the dovetail slot. The locking disk is fixed on the slide rail. There are loading holes on the locking disk. The invention makes sample keep correct position when X shape spot welding sample bears draw cut cyclic loading from different direction.
Description
Technical field
The present invention relates to the multidirectional tired clamping device that loads of a kind of X type spot-welding sample, be used for drawing-cut multidirectional tired load test that the spot welding fatigue sample is positioned and clamps, belong to machinery, field of automobile in the X font.
Technical background
Resistance spot welding has that cost is low, efficient is high, simple operation and other advantages, is very suitable for producing in enormous quantities, has particularly obtained using widely in the auto industry at modern industry.Because Hyundai Motor is in light weight more and more towards high strength and reliability, the direction of fuel saving develops and adopts thin high strength steel plate more and more, and the rigidity of tack-weld descends owing to the plate attenuation, and its fatigue strength is weakened.Therefore the technician should need carry out single shaft or the evaluation of multidirectional CYCLIC LOADING fatigue behaviour to the important parameter of the fatigue behaviour of solder joint as the automotive safety reliability to spot-welding sample in design.
Many domestic manufacturers all begin to consider the fatigue strength of spot welding when design at present, carry out testing fatigue.In the testing fatigue spot-welding sample is adopted single shaft (shearing) CYCLIC LOADING more.And in the actual conditions, except that shear-type load, most of solder joints also will bear the cyclic tension load on vertical solder joint plane inevitably, and this makes when the stressing conditions ratio of tack-weld bears single-axle load more complicated, and promptly solder joint often is in multidirectional stress state.Therefore, uniaxial loading seems and too simplifies, need consider the multidirectional loading fatigue behaviour of solder joint.At present, domestic the fatigue strength under the multidirectional CYCLIC LOADING of spot-welding sample and the research of life prediction are not also carried out.Therefore, the tack-weld under the multidirectional cyclic loading effect being carried out testing fatigue research has important practical significance.Tack-weld under the multidirectional CYCLIC LOADING is carried out the at present domestic also not appearance of the necessary anchor clamps of testing fatigue.This invention provides a kind of positioning clamping device to this type of research.
Summary of the invention
The objective of the invention is to provide a kind of X type spot-welding sample the multidirectional tired clamping device that loads, this device is when realizing clamping X type spot-welding sample, can also make sample in clamp body, keep correct position, guarantee to make X type spot-welding sample can bear different directions simultaneously and draw and cut cyclic loading.
In order to achieve the above object, the present invention has taked following technical scheme.The present invention mainly includes the last clamp body 10 and the lower clamp body 11 of structural similarity, and sample places up and down between the clamp body.Wherein, the structure of last clamp body 10 mainly includes pedestal 1, trapezoid block 5, wedge clamping block 2 and lock collar 7, lower surface at pedestal 1 is provided with a groove with respect to lower surface center line symmetry, trapezoid block 5 and wedge clamping block 2 are arranged in this groove, the upper surface center line of the center line of trapezoid block 5 and pedestal 1 coincides, axis direction in the side of pedestal 1 along trapezoid block 5 is provided with screwed transmission screw 4, transmission screw 4 cooperates with the bottom surface of trapezoid block 5, and trapezoid block 5 can slide along the lower surface center line of pedestal 1 under the promotion of transmission screw 4; Symmetria bilateralis on two inclined-planes of trapezoid block 5 is provided with two wedge clamping blocks 2, the inclined-plane of trapezoid block 5 can match with the inclined-plane of wedge clamping block 2 and contact, wedge clamping block 2 can be under the promotion on trapezoid block 5 inclined-planes along sliding with the perpendicular direction of trapezoid block 5 center lines, form two cross sectional shapes between the side that wedge clamping block 2 deviates from trapezoid block 5 and the medial surface of pedestal 1 and be parallelogram but the opposite groove of direction is used to place the X-shaped spot-welding sample.The structure of lower clamp body 11 is identical with the said structure of last clamp body 10, and difference is that said structure is positioned at the upper surface of lower clamp body 11.The upper surface center line of last clamp body 10 is provided with lock collar 7, be provided with slide rail 9 in the bottom of lower clamp body 11, the lower surface center line of lower clamp body 11 is provided with dovetail groove, and slide rail 9 can slide with respect to lower clamp body 11 along dovetail groove, and the lock collar 7 of lower clamp body is fixed on the slide rail 9; All be provided with on the lock collar 7 of clamp body up and down and load the hole.
The described lock collar 7 of clamp body up and down is fan-shaped, along the circumferential direction having on it with pedestal 1 becomes 30 °, 45 °, 60 °, 75 °, 90 ° five covers to load the hole respectively, behind the spot-welding sample clamping, the loading pore size distribution of lock collar is on a circumference up and down, and the center of circle is the solder joint center of sample.
The lock collar 7 of described lower clamp body 11 is perpendicular with the center line of the trapezoid block 5 of lower clamp body, and the lock collar 7 of last clamp body 10 is perpendicular with the center line of the trapezoid block 5 of last clamp body.
One side of the upper surface of the pedestal 1 of described lower clamp body 11, close parallelogram groove is provided with locating piece 3.
Corresponding trapezoid block 5 of upper surface and trapezoid block 5 at the pedestal 1 of the lower surface of the pedestal 1 of last clamp body and lower clamp body are provided with cover plate 6 with wedge clamping block 2 contacted parts.
Among the present invention, behind the spot-welding sample clamping, the loading pore size distribution of lock collar 7 is on a circumference up and down, and the center of circle is sample solder joint center.Guaranteed that testing machine is applied to the pulling force that loads the hole and can makes sample stressed even, symmetrical by the solder joint center of sample.The direction of load can be realization and load to pure extension from 30 ° of compound loading from become 30 ° of angles to the direction perpendicular to sample with sample.Because these anchor clamps are the multidirectional loadings that are used to do spot-welding sample, load the hole so on lock collar 7, have five covers, when the loading hole of passing through 30 °, 45 °, 60 °, 75 ° loaded, the solder joint of spot-welding sample was in and draws-cut the compound loading state, promptly can carry out multidirectional loading test to sample.
These anchor clamps lean on side (anchor point of locating piece 3 to the location of sample, the restriction fore-and-aft direction), medial surface (two anchor points of pedestal 1, the restriction left and right directions and rotate around vertical direction), the upper surface of wedge clamping block 2 (three anchor points, restriction above-below direction and around the rotation of two horizontal directions) realization is to six point locations of sample.
The course of work of the present invention is as follows: before the clamping sample, at first according to doing the angle of multidirectional loading, select the corresponding hole that loads, utilize to draw pin and load the hole clamp body is up and down connected with the last lower chuck of uniaxial test machine respectively.Adjust the position of wedge clamping block 2 in the clamp body up and down, making between the medial surface of its clamping surface and pedestal 1 has certain distance, convenient placement X-shaped sample.Then the latter half of X-shaped sample is placed lower clamp body 11, one end side surface near locating piece 3, realize sample location in 11 in lower clamp.The transmission screw 4 of turn-knob lower clamp body 11 moves forward trapezoid block 5 then, and trapezoid block 5 promotes wedge clamping block 2 by the inclined-plane contact and moves the clamping sample in two ends to the left and right.The lower chuck of testing machine again raises, make the lower clamp body 11 that clips sample near last clamp body 10, simultaneously lower clamp body 11 is outwards skidded off certain distance along slide rail 9, instantly clamp body 11 is elevated to the appropriate location, the parallelogram groove that is the first half of X-shaped sample and last clamp body 10 is when sustained height, lower clamp body 11 is inwardly slided, at this moment, the first half of sample just in time places in the groove, when clamp body 11 aligns with slide rail 9 instantly, tighten and hold out against screw 8 on the slide rail 9, locked lower clamp body 11 stops it to slide along slide rail 9 in loading procedure.This moment, the first half of sample entered in the clamp body 10, and the transmission screw 4 of clamp body 10 on the turn-knob makes clamp body 10 clamp the first half of sample.So just realized the clamping of whole sample.
The clamping structure of these anchor clamps is the wedge clamping block 2 that has the hatching knurling clamping surface, when turn-knob transmission screw 4, promotes trapezoid block 5 and moves forward, and trapezoid block 5 promotes two wedge clamping blocks 2 and moves to the left and right respectively by the inclined-plane contact, clamps sample.Because trapezoid block 5 is to promote two wedge clamping blocks 2 to move to the left and right simultaneously, and gapped between the dovetail groove of transmission screw 4 front ends itself and trapezoid block 5, so, such design can guarantee sample holder to neutrality.Guarantee that two sample two ends clamp simultaneously, inconsistent situation do not occur clamping.
Use slide rail 9 and dovetail groove in connecting of 7 of lower clamp body 11 and lock collars.Concentrate in order to reduce stress, the two ends clamping part and the center section of sample are not perpendicular, but present certain angle.Sample can not enter another clamp body in the front after locating and clamping in a clamp body, use dovetail groove slided in lower clamp body 11 front and back, guarantees that sample can enter in the clamp body 10 from the side.
Advantage of the present invention: 1) simple in structure, compact, practical, need not take off anchor clamps and be replaceable sample, easy and simple to handle.2) owing to be provided with the loading hole of different angles, can realize the multidirectional compound loading of different angles.3) slide rail of lower clamp body and oat tail groove structure make sample enter clamp body from the side, avoid sample because the situation of the special difficult turnover anchor clamps of shape.4) pedestal 1 all adopts hatching knurling with the clamping surface of wedge clamping block 2, guarantees the clamping degree of sample.5) owing to be to clamp internally, compact conformation, it is little to take up room, this kind clamping mode clamps the sample two ends simultaneously, avoid occurring an end and clamp, the situation that an end does not clamp, can guarantee sample holder to neutrality.These anchor clamps have been realized six point locations to sample, can guarantee the tram of sample in anchor clamps, are applicable to multidirectional tired loading of spot-welding sample fully.
Description of drawings
Fig. 1 structural representation of the present utility model
The structural representation of clamp body on Fig. 2
The structural representation (taking away cover plate) of Fig. 3 lower clamp body
Fig. 4 lower clamp and slide rail synoptic diagram
Fig. 5 wedge clamping block outside drawing
Fig. 6 X-shaped spot-welding sample synoptic diagram
Among the figure: 1, pedestal, 2, wedge clamping block, 3, locating piece, 4, the transmission screw, 5, trapezoid block, 6, cover plate, 7, lock collar, 8, hold out against screw, 9, slide rail, 10, go up clamp body, 11, the lower clamp body.
Embodiment
Below in conjunction with Fig. 1～Fig. 6 specific embodiments of the invention are described.
This device mainly is made of the independent sector of two structural similarities up and down, and X type spot-welding sample is held in the middle of two clamp bodies.The present invention mainly includes the last clamp body 10 and the lower clamp body 11 of structural similarity, as shown in Figure 1.Wherein, last clamp body 10 mainly includes pedestal 1, trapezoid block 5, wedge clamping block 2, lock collar 7, as described in Figure 3, lower surface at pedestal 1 is provided with a groove with respect to lower surface center line symmetry, trapezoid block 5, wedge clamping block 2 is arranged in this groove, the upper surface center line of the center line of trapezoid block 5 and pedestal 1 coincides, axis direction in the side of pedestal 1 along trapezoid block 5 is provided with screwed transmission screw 4, transmission screw 4 cooperates with the bottom surface of trapezoid block 5, and trapezoid block 5 can slide along the upper surface center line of pedestal 1 under the promotion of transmission screw 4.Symmetria bilateralis on two inclined-planes of trapezoid block 5 is provided with two wedge clamping blocks 2, the inclined-plane of trapezoid block 5 can match with the inclined-plane of wedge clamping block 2 and contact, wedge clamping block 2 can be under the promotion on trapezoid block 5 inclined-planes along sliding with the perpendicular direction of trapezoid block 5 center lines, form two cross sectional shapes between the side that wedge clamping block 2 deviates from trapezoid block 5 and the medial surface of pedestal 1 and be parallelogram but the opposite groove of direction is used to place the X-shaped spot-welding sample.The said structure of lower clamp body 11 is identical with last clamp body 10, and difference is that said structure is positioned at the upper surface of lower clamp body 11.The upper surface center line of last clamp body 10 is provided with lock collar 7, and the lower surface center line of lower clamp body 11 is provided with dovetail groove, and slide rail 9 can slide with respect to lower clamp body 11 along dovetail groove, and lock collar 7 is fixed on the slide rail 9.All be provided with on the lock collar 7 of clamp body up and down and load the hole.
The lock collar 7 of clamp body 11 is all perpendicular with the center line of separately trapezoid block 5 up and down.
One side of the upper surface of the pedestal 1 of lower clamp body 11, close parallelogram groove is provided with locating piece 3.Locating piece 3 is located in the sulculus that the upper surface of pedestal 1 opens, and during clamping test pieces, test specimen leans against on the side of locating piece 3.The distance of the front and back sides of the surface distance pedestal 1 that leans on mutually with test specimen on the locating piece 3 is respectively 47.3mm and 72.7mm.
As shown in Figure 2, be provided with cover plate 6 at corresponding trapezoid block 5 of the upper surface of pedestal 1 and trapezoid block 5 with wedge clamping block 2 contacted parts, cover plate 6 is fixed by screw and pedestal 1, plays in the fixedly effect of trapezoid block 5 and wedge clamping block 2 of vertical direction.
Claims (5)
1.X the multidirectional tired clamping device that loads of type spot-welding sample is characterized in that: mainly include clamp body (10) and lower clamp body (11); Wherein, the structure of last clamp body (10) mainly includes pedestal (1), trapezoid block (5), wedge clamping block (2) and lock collar (7), lower surface at pedestal (1) is provided with a groove with respect to lower surface center line symmetry, trapezoid block (5) and wedge clamping block (2) are arranged in this groove, the lower surface center line of the center line of trapezoid block (5) and pedestal (1) coincides, axis direction in the side of pedestal (1) along trapezoid block (5) is provided with transmission screw (4), transmission screw (4) cooperates with the bottom surface of trapezoid block (5), and trapezoid block (5) can slide along the lower surface center line of pedestal (1) under the promotion of transmission screw (4); Symmetria bilateralis on two inclined-planes of trapezoid block (5) is provided with two wedge clamping blocks (2), the inclined-plane of trapezoid block (5) can match with the inclined-plane of wedge clamping block (2) and contact, wedge clamping block (2) can be under the promotion on trapezoid block (5) inclined-plane along sliding with the perpendicular direction of trapezoid block (5) center line, form two cross sectional shapes between the side that wedge clamping block (2) deviates from trapezoid block (5) and the medial surface of pedestal (1) and be parallelogram but the opposite groove of direction, be used to place the X-shaped spot-welding sample, the upper surface center line of last clamp body (10) is provided with lock collar (7); The structure of lower clamp body (11) is identical with the said structure of last clamp body (10), difference is that said structure is positioned at the upper surface of lower clamp body (11), be provided with slide rail (9) in the bottom of lower clamp body (11), the lower surface center line of lower clamp body (11) is provided with dovetail groove, slide rail (9) can slide with respect to lower clamp body (11) along dovetail groove, and the lock collar of lower clamp body (7) is fixed on the slide rail (9); All be provided with on the lock collar of clamp body (7) up and down and load the hole.
2, the multidirectional tired clamping device that loads of a kind of X type spot-welding sample according to claim 1, it is characterized in that: the lock collar (7) of described clamp body up and down is for fan-shaped, along the circumferential direction having on it with pedestal (1) becomes 30 °, 45 °, 60 °, 75 °, 90 ° five covers to load the hole respectively, behind the spot-welding sample clamping, the loading pore size distribution of lock collar is on a circumference up and down, and the center of circle is the solder joint center of sample.
3, the multidirectional tired clamping device that loads of a kind of X type spot-welding sample according to claim 1, it is characterized in that: the lock collar (7) of described lower clamp body (11) is perpendicular with the center line of the trapezoid block (5) of lower clamp body, and the lock collar (7) of last clamp body (10) is perpendicular with the center line of the trapezoid block (5) of last clamp body.
4, the multidirectional tired clamping device that loads of a kind of X type spot-welding sample according to claim 1, it is characterized in that: a side of the upper surface of the pedestal (1) of described lower clamp body (11), close parallelogram groove is provided with locating piece (3).
5, the multidirectional tired clamping device that loads of a kind of X type spot-welding sample according to claim 1 is characterized in that: be provided with cover plate (6) at the corresponding trapezoid block (5) of upper surface of the pedestal (1) of the lower surface of the pedestal (1) of last clamp body and lower clamp body and trapezoid block (5) and the contacted part of wedge clamping block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101128101A CN100520344C (en) | 2006-09-04 | 2006-09-04 | Multiple way fatigue loading clamping device for x-shape spot welding test sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101128101A CN100520344C (en) | 2006-09-04 | 2006-09-04 | Multiple way fatigue loading clamping device for x-shape spot welding test sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987407A CN1987407A (en) | 2007-06-27 |
| CN100520344C true CN100520344C (en) | 2009-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101128101A Expired - Fee Related CN100520344C (en) | 2006-09-04 | 2006-09-04 | Multiple way fatigue loading clamping device for x-shape spot welding test sample |
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| CN (1) | CN100520344C (en) |
Families Citing this family (13)
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| CN101839829B (en) * | 2010-02-24 | 2012-12-19 | 北汽福田汽车股份有限公司 | Device and method for detecting strength of welding spots |
| CN102809510A (en) * | 2011-06-02 | 2012-12-05 | 鸿富锦精密工业（深圳）有限公司 | Clamping device |
| CN104237007B (en) * | 2013-06-07 | 2016-09-14 | 合肥通用机械研究院 | Device for testing composite fatigue crack propagation rate |
| CN105021452B (en) * | 2015-07-30 | 2017-08-04 | 西南交通大学 | The multiaxle fatigue experimental fixture of high-cycle fatigue test machine |
| CN108387441B (en) * | 2015-12-15 | 2019-07-12 | 叶泽洲 | A kind of fixture loading method |
| CN105403450B (en) * | 2015-12-15 | 2018-12-21 | 桂林电子科技大学 | A kind of Mixed Mode Fracture experiment loading unit |
| CN105910894A (en) * | 2016-03-25 | 2016-08-31 | 大连理工大学 | Tension-shear coupling test clamp for realizing variable axial loading and testing machine |
| CN106769470A (en) * | 2016-12-30 | 2017-05-31 | 维沃移动通信有限公司 | A kind of survey tool for test material mechanical property parameters |
| CN108931436B (en) * | 2018-06-01 | 2021-02-26 | 陕西省地质环境监测总站 | Eccentric loading and shear creep combined action test device for soft rock |
| CN109269920A (en) * | 2018-08-02 | 2019-01-25 | 北矿科技股份有限公司 | It is a kind of for measuring the test device of multi-pole magnet-ring toughness |
| CN112798406B (en) * | 2019-11-14 | 2022-08-23 | 中国航发商用航空发动机有限责任公司 | Clamp for testing shearing performance of composite material |
| CN113390711A (en) * | 2020-03-11 | 2021-09-14 | 华晨宝马汽车有限公司 | Clamp apparatus |
| CN114252290B (en) * | 2021-12-20 | 2023-11-03 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | Core split sampler for geological mineral drilling |
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2006
- 2006-09-04 CN CNB2006101128101A patent/CN100520344C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1987407A (en) | 2007-06-27 |
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Granted publication date: 20090729 Termination date: 20100904 |