CN220508982U - Test fixture for auxiliary calibration of resistance test point positions - Google Patents
Test fixture for auxiliary calibration of resistance test point positions Download PDFInfo
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- CN220508982U CN220508982U CN202321897642.7U CN202321897642U CN220508982U CN 220508982 U CN220508982 U CN 220508982U CN 202321897642 U CN202321897642 U CN 202321897642U CN 220508982 U CN220508982 U CN 220508982U
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- 238000012360 testing method Methods 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 claims abstract description 147
- 239000000523 sample Substances 0.000 claims abstract description 59
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 238000012827 research and development Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to the technical field of resistance detection, in particular to a test fixture for auxiliary calibration of resistance test points. According to the utility model, the detection component is driven by the moving component to carry out position adjustment, the detection rod carries out resistance detection on the detection element on the positioning jig, so that the fixed position is accurately measured by the equipment for measuring the size, and a fixed probe arrangement mode and a distance position are obtained, so that the effect of unifying the calibration of the resistance value of the upper plate and the test jig of the auxiliary calibration resistance test point is achieved, the test jig designed by the research and development end when verifying the resistance value of the upper plate and the resistance value of the jig of a product can meet the requirement at one time, the reasonable probe arrangement mode and the probe distance are provided, the research and development timeliness is improved, and the waste of the target caused by the blind ordering jig for adjusting the resistance value of the upper plate before and after the probe arrangement mode and the distance position is avoided.
Description
Technical Field
The utility model relates to the technical field of resistance detection, in particular to a test fixture for auxiliary calibration of resistance test points.
Background
In the field of resistance testing, the resistance test in the production process of products is usually performed by adopting a test fixture. However, in the practical application process, the actual resistance of the product is always the most suitable for the use of customers after the product is attached to the PCB. However, in many cases, the application end may feedback that the nominal resistance of the product is inconsistent with the resistance of the product welded on the PCB in practical application, and negative deviation or positive deviation may occur, and the nominal value range is easily exceeded. The situation is basically caused by that the resistance value tested by the test fixture is not calibrated with the resistance value of the upper plate, and because the test fixture can be tested, a plurality of probe arrangement modes and arrangement intervals can be provided. The four-wire method test is also adopted, and the represented resistance values can be different in different arrangement intervals and arrangement distances, especially for some milliohm products. However, because the existing test jigs are basically fixed with the arrangement and the distance of probes, the probes of one set of the jig have only one arrangement and distance. This brings very big inconvenience when the board resistance is marked to earlier stage research personnel, probably because the calibration, produces various arrangement, interval's tool, causes the waste.
Disclosure of Invention
The utility model aims to provide a test fixture capable of flexibly adjusting the arrangement and the spacing of each probe according to different products, and provides a test fixture for auxiliary calibration of resistance test points in a reasonable probe arrangement mode and probe spacing.
In order to solve the technical problems, the technical scheme adopted by the utility model for solving the technical problems is as follows:
a test fixture for assisting in calibrating resistance test points comprises:
a base on which a positioning station for placing the detection element is provided;
the positioning jig is arranged on the positioning station and is used for positioning the detection element;
the detection component is arranged on the base and is opposite to the positioning jig, a detection rod is arranged on the detection component, and the detection rod is used for detecting the resistance value of a detection element on the positioning jig;
the moving assembly is arranged on the base, the detecting assembly is arranged on the moving assembly, and the moving assembly drives the detecting assembly to adjust the position.
In one embodiment of the utility model, the moving assembly comprises two guide rails, the two guide rails are arranged on the base in parallel, a sliding block is arranged on the guide rails in a sliding mode, the detecting assembly is arranged on the sliding block, a first screw rod is arranged on the sliding block, and the first screw rod abuts against the guide rails to fix the sliding block on the guide rails.
In one embodiment of the utility model, the detection assembly comprises a detection frame, the detection frame is arranged on the moving assembly, an adjusting groove is formed in the detection frame, a telescopic plate is arranged on the adjusting groove in a penetrating mode, and the detection rod is arranged on the telescopic plate.
In one embodiment of the utility model, the cross-sectional area of the adjusting groove is larger than or equal to the cross-sectional area of the expansion plate, and the depth of the adjusting groove is 1/3-1/2 of the total length of the expansion plate.
In one embodiment of the utility model, the detection frame is provided with a second screw rod, and the second screw rod is abutted with the expansion plate to fix the expansion plate on the detection frame.
In one embodiment of the present utility model, the detection assembly further includes a support plate, the support plate is disposed on a free end of the expansion plate, the support plate is disposed vertically to the expansion plate, and the detection rod is disposed on the support plate.
In one embodiment of the present utility model, the number of the detecting components is four, the four detecting components are enclosed around the positioning jig, and the four detecting components are used for performing resistance value test on the detecting components by adopting a four-wire method.
In one embodiment of the utility model, the positioning jig comprises a jig block, wherein a positioning groove matched with the detection element is arranged on the jig block, a limit protrusion or a limit groove matched with the detection element is arranged on the positioning groove, and a rubber layer is arranged on the inner wall of the positioning groove.
In one embodiment of the utility model, the moving assembly is provided with a mounting hole, the mounting hole is a straight hole or an inclined hole, the detection rod is arranged on the mounting hole in a penetrating way, and the detection assembly is provided with a third screw rod which is abutted with the detection rod and used for fixing the detection rod on the mounting hole.
In one embodiment of the utility model, the detection rod comprises a detection probe, the detection probe penetrates through a sphere, a spherical groove is formed in the detection component, the sphere is arranged in the spherical groove, the sphere is made of rubber materials, a third screw rod is arranged on the detection component, the third screw rod is abutted with the sphere and used for being fixed in the spherical groove, and the detection probe is clamped on the sphere.
The utility model has the beneficial effects that:
according to the utility model, the detection component is driven by the moving component to carry out position adjustment, the detection rod carries out resistance detection on the detection element on the positioning jig, so that the fixed position is accurately measured by the equipment for measuring the size, and a fixed probe arrangement mode and a distance position are obtained, so that the effect of unifying the calibration of the resistance value of the upper plate and the test jig of the auxiliary calibration resistance test point is achieved, the test jig designed by the research and development end when verifying the resistance value of the upper plate and the resistance value of the jig of a product can meet the requirement at one time, the reasonable probe arrangement mode and the probe distance are provided, the research and development timeliness is improved, and the waste of the target caused by the blind ordering jig for adjusting the resistance value of the upper plate before and after the probe arrangement mode and the distance position is avoided.
Drawings
FIG. 1 is a schematic diagram of a test fixture for assisting in calibrating resistance test points according to the present utility model.
FIG. 2 is a schematic diagram of a detection probe of the present utility model.
The reference numerals in the figures illustrate: 1. a moving assembly; 11. a guide rail; 12. a slide block; 13. a first screw hole; 2. a detection assembly; 21. a detection frame; 22. a telescoping plate; 23. a second screw hole; 24. a support plate; 3. detecting a probe; 31. a spherical groove; 32. a sphere; 33. a third screw; 4. positioning jig; 41. a positioning groove; 5. a base; 51. and (5) positioning a station.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1-2, a test fixture for assisting in calibrating a resistance test point location, includes:
a base 5 on which a positioning station 51 for placing the detection element is provided;
the positioning jig 4 is arranged on the positioning station 51, and the positioning jig 4 is used for positioning the detection element;
the detection assembly 2 is arranged on the base 5, the detection assembly 2 and the positioning jig 4 are oppositely arranged, a detection rod is arranged on the detection assembly 2, and the detection rod is used for detecting the resistance value of a detection element on the positioning jig 4;
the moving assembly 1 is arranged on the base 5, the detecting assembly 2 is arranged on the moving assembly 1, and the moving assembly 1 drives the detecting assembly 2 to adjust the position.
According to the utility model, the detection component 2 is driven by the moving component 1 to carry out position adjustment, the detection rod carries out resistance detection on the detection element on the positioning jig 4, so that the fixed position is accurately measured by the equipment for measuring the size, and a fixed probe arrangement mode and a fixed distance position are obtained, so that the effect of unifying the calibration of the auxiliary calibration resistance test point position testing jig and the upper plate resistance is achieved, the test jig designed by the research and development end when verifying the upper plate resistance and the jig resistance of a product can meet the requirement at one time, the reasonable probe arrangement mode and the probe distance are provided, the research and development timeliness is improved, and the waste of blindly ordering the jig to adjust the upper plate front and rear resistance caused by uncertain probe arrangement mode and distance position is avoided.
In one embodiment of the present utility model, the moving assembly 1 includes two guide rails 11, the two guide rails 11 are disposed on the base 5 in parallel, a sliding block 12 is slidably disposed on the guide rails 11, the detecting assembly 2 is disposed on the sliding block 12, a first screw hole 13 is disposed on the sliding block 12, and a first screw is disposed on the first screw hole 13, and abuts against the guide rails 11 to fix the sliding block 12 on the guide rails 11.
Specifically, the arrangement mode and the distance position of the detection probes 3 are confirmed according to the specifications of the detection elements, the slide block 12 moves on the guide rail 11 to adjust the position of the detection frame 21 on the slide block, a threaded hole is formed in the slide block 12, the slide block 12 is fixed on the guide rail 11 through the abutting of the first screw rod and the guide rail 11, the detection assembly 2 is quickly fixed, and the detection position accuracy of the detection probes 3 is guaranteed.
In one embodiment of the present utility model, the detection assembly 2 includes a detection frame 21, the detection frame 21 is disposed on the moving assembly 1, an adjusting slot is disposed on the detection frame 21, a telescopic plate 22 is disposed on the adjusting slot in a penetrating manner, and the detection rod is disposed on the telescopic plate 22.
Specifically, the expansion plate 22 is arranged on the adjusting groove in a penetrating way, and the detection rod is arranged on the expansion plate 22, so that a reasonable probe arrangement mode and a reasonable probe interval can be provided, the timeliness of research and development is improved, and the problem that the targets are wasted due to the fact that the probes are arranged in an uncertain mode and a distance position and the targets are ordered by blindly ordering the jig to adjust the front and rear resistance values of the upper plate is avoided.
In one embodiment of the present utility model, the cross-sectional area of the adjusting groove is greater than or equal to the cross-sectional area of the expansion plate 22, and the depth of the adjusting groove is 1/3-1/2 of the total length of the expansion plate 22.
Specifically, with the above structure, the stability of the expansion plate 22 on the detection frame 21 can be ensured, and the shake or vibration of the detection probe 3 in the adjustment process can be avoided, so as to perform accurate contact point distance measurement.
In one embodiment of the present utility model, the detection frame 21 is provided with a second screw hole 23, and the second screw hole 23 is provided with a second screw, and the second screw abuts against the expansion plate 22 to fix the expansion plate 22 on the detection frame 21.
Specifically, rotate second screw rod and expansion plate 22 butt, be fixed in on the detection frame 21 with expansion plate 22, carry out quick fixed with detection frame 21 and expansion plate 22, guaranteed the position accuracy of detecting probe 3.
In one embodiment of the present utility model, the detecting assembly 2 further includes a support plate 24, the support plate 24 is disposed on the free end of the expansion plate 22, the support plate 24 is disposed vertically to the expansion plate 22, and the detecting rod is disposed on the support plate 24.
Specifically, the supporting plate 24 and the expansion plate 22 are used for installing the detection probes 3, the supporting plate 24 and the expansion plate 22 are made into an L-shaped convenient sliding block 12 which can be in same point contact with the vertical detection probes 3 on the expansion plate 22 when moving along, the vertical detection probes 3 can cause mechanical obstruction between the two detection probes 3 on the adjacent expansion plate 22, the two detection probes cannot be in same point contact, the supporting plate 24 and the expansion plate 22 are made into an L-shaped structure, interference between the two detection probes can be effectively avoided, and detection efficiency and precision are guaranteed.
In one embodiment of the present utility model, the number of the detecting components 2 is four, the four detecting components 2 are enclosed around the positioning fixture 4, and the four detecting components 2 are used for performing the resistance test on the detecting element by adopting a four-wire method.
In one embodiment of the present utility model, the positioning jig 4 includes a jig block, a positioning groove 41 matched with the detecting element is provided on the jig block, a limit protrusion or a limit groove matched with the detecting element is provided on the positioning groove 41, and a rubber layer is provided on an inner wall of the positioning groove 41.
In one embodiment of the present utility model, the moving assembly 1 is provided with a mounting hole, the mounting hole is a straight hole or an inclined hole, the detection rod is arranged on the mounting hole in a penetrating manner, the detection assembly 2 is provided with a third screw 33, and the third screw 33 is abutted to the detection rod and used for fixing the detection rod on the mounting hole.
Specifically, the third screw 33 is abutted with the detection rod and is used for fixing the detection rod on the mounting hole, so that the detection rod can be quickly fixed in position, the mounting hole is a straight hole or an inclined hole, the mutual interference of the adjacent support plates 24 can be avoided, and the detection positions of the detection rod and the detection element can be more accurate, so that the fixed probe arrangement mode and the fixed distance position can be obtained.
In one embodiment of the present utility model, the detection rod includes a detection probe 3, the detection probe 3 is inserted into a sphere 32, a spherical groove 31 is provided on the detection component 2, the sphere 32 is disposed in the spherical groove 31, the sphere 32 is made of a rubber material, a third screw 33 is provided on the detection component 2, the third screw 33 abuts against the sphere 32 for fixing the sphere 32 in the spherical groove 31, and the detection probe 3 is clamped on the sphere 32.
Specifically, the detection probes 3 on the support plate 24 and the expansion plate 22 are rotated, so that the rubber ball 32 connected with the detection probes 3 rotates in the spherical groove 31, the positions of the detection probes 3 and the detection elements can be quickly adjusted, the detection probes 3 are metal probes connected in a four-wire method, the detection elements are contacted for testing and fixing points, the detection probes 3 are adjusted through the ball 32, and the installation form of the detection probes is non-vertical to the support plate 24 or the expansion plate 22, and mainly in order to avoid mechanical interference between the adjacent support plate 24 or expansion plate 22 caused by vertical installation; simultaneously rotatory third screw rod 33 and spheroid 32 butt for spheroid 32 is fixed in spherical groove 31, and spheroid 32 is tightly pressed from both sides detection probe 3 tight on spheroid 32 by the deformation simultaneously, can fix the position of detection probe 3 fast, and angular adjustment is convenient and fast, improves the detection precision, and application scope is wide.
The use process
The detection element is placed in the positioning groove 41, the positioning jig 4 is placed on the positioning station 51, the arrangement mode and the distance position of the detection probes 3 are confirmed according to the specification of the detection element, the sliding block 12 moves on the guide rail 11 to adjust the position of the detection frame 21 on the detection jig, the sliding block 12 is fixed on the guide rail 11 through the abutting of the first screw rod and the guide rail 11, the four detection assemblies 2 are fixed on the preset position, the telescopic plate 22 is arranged on the adjusting groove in a penetrating mode, the second screw rod is rotated to abut against the telescopic plate 22 to fix the telescopic plate 22 on the detection frame 21, the supporting plate 24 and the detection probes 3 on the telescopic plate 22 are rotated, the rubber ball 32 connected with the detection probes 3 rotates in the spherical groove 31, the third screw rod 33 is rotated to abut against the ball 32 to enable the ball 32 to be fixed in the spherical groove 31, meanwhile, the ball 32 is tightly abutted to deform to clamp the detection probes 3 on the ball 32, the fixed position is measured through the accurate contact point spacing of the equipment with the measurement size, the fixed probe mode and the distance position are obtained, and the fixed probe arrangement mode and the distance position are not wasted due to the fact that the arrangement mode and the order position of the probe arrangement mode and the calibration value are not confirmed.
The above-described embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. The protection scope of the utility model is subject to the claims.
Claims (10)
1. The utility model provides a supplementary test fixture that marks resistance test point position which characterized in that includes:
a base on which a positioning station for placing the detection element is provided;
the positioning jig is arranged on the positioning station and is used for positioning the detection element;
the detection component is arranged on the base and is opposite to the positioning jig, a detection rod is arranged on the detection component, and the detection rod is used for detecting the resistance value of a detection element on the positioning jig;
the moving assembly is arranged on the base, the detecting assembly is arranged on the moving assembly, and the moving assembly drives the detecting assembly to adjust the position.
2. The test fixture for assisting in calibrating a resistance test point according to claim 1, wherein the moving assembly comprises two guide rails, the two guide rails are arranged on the base in parallel, a sliding block is arranged on the guide rails in a sliding mode, the detecting assembly is arranged on the sliding block, a first screw rod is arranged on the sliding block, and the first screw rod abuts against the guide rails to fix the sliding block on the guide rails.
3. The test fixture for assisting in calibrating a resistance test point according to claim 1, wherein the detection assembly comprises a detection frame, the detection frame is arranged on the moving assembly, an adjusting groove is formed in the detection frame, a telescopic plate is arranged on the adjusting groove in a penetrating mode, and the detection rod is arranged on the telescopic plate.
4. The test fixture for auxiliary calibration of resistance test points according to claim 3, wherein the cross-sectional area of the adjusting groove is greater than or equal to the cross-sectional area of the expansion plate, and the depth of the adjusting groove is 1/3-1/2 of the total length of the expansion plate.
5. The test fixture for assisting in calibrating a resistance test point according to claim 3, wherein the detection frame is provided with a second screw, and the second screw is abutted with the expansion plate to fix the expansion plate on the detection frame.
6. The test fixture for assisting in calibrating a resistance test point as recited in claim 3, wherein the detection assembly further comprises a support plate, the support plate is disposed on a free end of the expansion plate, the support plate is disposed vertically on the expansion plate, and the detection rod is disposed on the support plate.
7. The test fixture for auxiliary calibration of resistance test points according to claim 1, wherein the number of the detection components is four, the four detection components are arranged around the positioning fixture, and four-wire resistance test is performed on the detection components through the four detection components.
8. The test fixture for auxiliary calibration of resistance test points according to claim 1, wherein the positioning fixture comprises a fixture block, a positioning groove matched with the detection element is arranged on the fixture block, a limit protrusion or a limit groove matched with the detection element is arranged on the positioning groove, and a rubber layer is arranged on the inner wall of the positioning groove.
9. The test fixture for assisting in calibrating a resistance test point according to claim 1, wherein the moving assembly is provided with a mounting hole, the mounting hole is a straight hole or an inclined hole, the detection rod is arranged on the mounting hole in a penetrating manner, and the detection assembly is provided with a third screw rod which is abutted with the detection rod and used for fixing the detection rod on the mounting hole.
10. The test fixture for assisting in calibrating a resistance test point according to claim 1, wherein the detection rod comprises a detection probe, the detection probe penetrates through the ball body, the detection assembly is provided with a ball groove, the ball body is arranged in the ball groove, the ball body is made of rubber materials, the detection assembly is provided with a third screw rod, and the third screw rod is abutted with the ball body and used for being fixed in the ball groove, and the detection probe is clamped on the ball body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321897642.7U CN220508982U (en) | 2023-07-19 | 2023-07-19 | Test fixture for auxiliary calibration of resistance test point positions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321897642.7U CN220508982U (en) | 2023-07-19 | 2023-07-19 | Test fixture for auxiliary calibration of resistance test point positions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220508982U true CN220508982U (en) | 2024-02-20 |
Family
ID=89877422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321897642.7U Active CN220508982U (en) | 2023-07-19 | 2023-07-19 | Test fixture for auxiliary calibration of resistance test point positions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220508982U (en) |
-
2023
- 2023-07-19 CN CN202321897642.7U patent/CN220508982U/en active Active
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