A bar test apparatus
By combining a vision mechanism and an electric displacement stage, high-precision alignment between the bar and the material is achieved, solving the problem of large alignment deviation in traditional testing and improving the repeatability and accuracy of test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WUHAN LAILE PHOTOELECTRIC TECH CO LTD
- Filing Date
- 2026-04-09
- Publication Date
- 2026-05-29
AI Technical Summary
In traditional bar testing, the alignment of the bar with the materials on both sides relies on manual visual observation or mechanical limiting, resulting in large alignment deviations in multiple channels, poor repeatability, and even channel coupling failure.
A vision mechanism is used to acquire high-definition images and algorithms to identify the positional deviation between the bar channel and the material. A motorized displacement stage is used for high-precision motion adjustment to align the bar channel under test with the material on both sides.
This significantly improves the consistency and accuracy of multi-channel alignment, ensuring the accuracy and consistency of bar bar testing.
Smart Images
Figure CN122109688A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of bar testing technology, and specifically relates to a bar testing device. Background Technology
[0002] In traditional bar testing, the alignment of the bar with the materials on both sides relies heavily on manual visual observation or mechanical limiting. This is greatly affected by human experience and mechanical clearance, resulting in large alignment deviations in multiple channels. Consequently, the test results of different batches and different channels have poor repeatability, and in some cases, the coupling of some channels may fail. Summary of the Invention
[0003] The purpose of this invention is to overcome at least one defect in the prior art and to provide a bar testing device.
[0004] The technical solution of this invention is implemented as follows: This invention provides a bar testing device, comprising:
[0005] A bar test stand is provided, wherein a bar clamp is fixedly installed on the bar test stand, and the bar clamp is configured to fix the bar.
[0006] Two displacement stages are respectively set on both sides of the Bar test stage. Material clamps are fixedly installed on the displacement stages. The material clamps are configured to hold materials. The displacement stages are configured to drive the material clamps installed on them to move.
[0007] A vision mechanism is used to acquire images of the Bar test bench area and transmit them to the control system;
[0008] The control system is used to identify the relative positional deviation between the center position of each channel of the Bar bar and the alignment reference point of the material on both sides based on the image recognition of the Bar bar test platform area, and to send an adjustment command to the displacement stage based on the deviation, thereby controlling the displacement stage to drive the material clamp to move so that the test channel of the Bar bar is aligned with the material on both sides.
[0009] In some embodiments, the vision mechanism includes:
[0010] The first vision module has its optical axis set vertically downwards, facing the upper end of the Bar test platform;
[0011] The second vision module has its optical axis set horizontally, facing the Bar test platform.
[0012] The first vision module is fixedly mounted on the first vision movement adjustment mechanism. The second vision module is fixedly mounted on the second vision movement adjustment mechanism. The first and second vision movement adjustment mechanisms are mounted on a gantry frame.
[0013] The gantry, bar test stand, and displacement stage are fixed on the optical platform. The optical platform is supported on the housing base, which is also fixedly equipped with an instrument rack for placing the instruments.
[0014] In some embodiments, the bar test bench includes a clamp base and a bar movement adjustment mechanism, wherein the clamp base is fixedly mounted on the bar movement adjustment mechanism.
[0015] In some embodiments, the bar movement adjustment mechanism includes a linear module and a rotary module. The linear module is configured to move the bar along the Y-axis, where the Y-axis is the longitudinal direction of the bar. The rotary module is configured to rotate the bar around the Z-axis.
[0016] In some embodiments, the Bar clamp includes a clamp body, the upper end face of which is provided with at least one vacuum adsorption hole, a nozzle seat is fixedly connected to the side wall of the clamp body, and a sealed air passage is machined inside the clamp body to connect the nozzle seat and all vacuum adsorption holes, the nozzle seat being used to connect a vacuum generating device.
[0017] In some embodiments, the bar clamp further includes a clamping module and a first limiting baffle. The first limiting baffle and the clamping module are respectively fixed at both ends of the clamp body along the Y-axis, so that the bar is limited between the push block of the clamping module and the first limiting baffle.
[0018] In some embodiments, the bar clamp further includes a second limiting baffle, which is fixedly installed on one side of the clamp body.
[0019] The clamping module is a manual clamping module. The clamping module includes a push block and a mounting base. The mounting base is fixedly connected to the fixture body, and an adjusting screw is threaded onto the mounting base. The end of the adjusting screw is connected to the push block.
[0020] In some embodiments, a clamp mounting base is fixed on the displacement stage. The clamp mounting base includes a horizontal plate and a vertical plate. A slide rail slider assembly is fixed on the horizontal plate of the clamp mounting base. The slider of the slide rail slider assembly is connected to the clamp mounting plate. The clamp mounting plate is configured to detachably connect to a material clamp. An elastic element is provided between the clamp mounting plate and the vertical plate of the clamp mounting base.
[0021] The elastic element is a spring. A spring limiting element is fixed on the vertical plate of the clamp mounting base. The spring is sleeved on the spring limiting element, with one end of the spring abutting against the spring limiting element or the vertical plate of the clamp mounting base, and the other end of the spring connecting to or abutting against the clamp mounting plate. A limiting post is provided on the clamp mounting plate, and the other end of the spring is sleeved on the limiting post.
[0022] The fixture mounting plate is equipped with fixture locks for securing material fixtures.
[0023] In some embodiments, the material is any one of optical fiber, FA fixture, chip fixture, and PD, and the material fixture is matched with the material.
[0024] In some embodiments, the displacement stage is a six-axis displacement stage.
[0025] The present invention has at least the following beneficial effects: This solution uses high-definition image acquisition by a vision mechanism and precise algorithm recognition to directly quantify and calculate the positional deviation between the bar channel and the material. Combined with the high-precision motion adjustment of the electric displacement stage, it greatly improves the consistency and accuracy of multi-channel alignment. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the structure of a bar testing device disclosed in one embodiment of the present invention;
[0028] Figure 2 This is a partial structural schematic diagram of a bar testing device disclosed in one embodiment of the present invention;
[0029] Figure 3 This is a schematic diagram of a state of a Bar strip test stand and two displacement stages disclosed in an embodiment of the present invention.
[0030] Figure 4 This is a schematic diagram of another state of the Bar strip test table and two displacement stages disclosed in one embodiment of the present invention;
[0031] Figure 5 This is a schematic diagram of the structure of a bar test bench disclosed in one embodiment of the present invention;
[0032] Figure 6 This is a partial structural schematic diagram of a Bar strip testing station disclosed in one embodiment of the present invention;
[0033] Figure 7 This is a schematic diagram of the states of two displacement stages disclosed in one embodiment of the present invention;
[0034] Figure 8 This is a schematic diagram of the structure of a displacement stage disclosed in one embodiment of the present invention;
[0035] Figure 9 for Figure 8 A diagram from another perspective;
[0036] Figure 10 This is a schematic diagram of the structure of a material clamp disclosed in one embodiment of the present invention;
[0037] Figure 11 for Figure 10 A diagram from another perspective.
[0038] In the attached diagram, 1 is an optical platform, 2 is a bar test stand, 21 is a bar clamp, 22 is a bar movement adjustment mechanism, 23 is a clamping module, 24 is a first limiting baffle, 25 is a second limiting baffle, 26 is a vacuum adsorption hole, 28 is a clamp base, 3 is a displacement stage, 4 is a clamp mounting base, 5 is a slide rail slider assembly, 6 is a clamp mounting plate, 61 is a limiting post, 7 is a material clamp, 8 is a clamp lock, 9 is a spring limiting component, 10 is a bar, 11 is a first vision module, 12 is a first vision movement adjustment mechanism, 13 is a second vision module, 14 is a second vision movement adjustment mechanism, 15 is a gantry frame, and 16 is a housing base. Detailed Implementation
[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0040] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0041] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this invention, unless otherwise stated, "a plurality of" or "several" means two or more.
[0042] See Figures 1 to 11 This invention provides a bar testing device, comprising:
[0043] Bar test stand 2, on which a bar clamp 21 is fixedly installed, the bar clamp 21 being configured to fix the bar 10;
[0044] Two displacement stages 3 are respectively set on both sides of the bar test stage 2. Material clamps 7 are fixedly mounted on each displacement stage 3. The material clamps 7 are configured to hold materials, and the displacement stages 3 are configured to drive the material clamps 7 to move. The type of material clamp 7 must match the material to be coupled in the test scenario.
[0045] A vision mechanism is used to acquire images of the area of the Bar test bench 2 and transmit them to the control system;
[0046] The control system is used to identify the relative positional deviation between the center position of each channel of the Bar bar and the alignment reference point of the materials on both sides based on the image recognition of the Bar bar test platform 2 area, and send adjustment instructions to the displacement platform 3 according to the deviation, control the displacement platform 3 to drive the material clamp 7 to move, so that the test channel of the Bar bar is aligned with the materials on both sides.
[0047] In some embodiments, the displacement stage 3 may be a six-axis displacement stage.
[0048] In some embodiments, the vision mechanism is fixedly installed above or to the side of the Bar test platform 2, and its field of view completely covers the test area of the Bar test platform 2 (including the alignment area of the Bar and the material clamps 7 on both sides); the vision mechanism is configured to acquire high-definition images of the Bar and the materials on both sides in real time and transmit the image data to the control system in real time; the control system has built-in image recognition algorithms (such as edge detection, template matching, feature point extraction) to process the received images, identify and calculate the relative positional deviation (including X-axis lateral deviation, Y-axis longitudinal deviation, and angle deviation around the Z-axis) between the center position of each light-emitting channel of the Bar and the alignment reference point of the materials on both sides; the control system generates corresponding motion control commands based on the calculated positional deviation values and sends them to the electric displacement stages 3 on both sides; the electric displacement stages 3 drive the material clamps 7 to perform a composite motion of XYZ three-axis translation + rotation around the Z-axis until the materials on both sides of the Bar are precisely aligned with the test channels of the Bar, and the displacement stage 3 is locked after the deviation value drops to a preset threshold.
[0049] Bar testing is used to test whether the photoelectric performance parameters of each light-emitting channel of the bar are qualified. By precisely coupling each channel to the optical fiber / PD device, the optical signal parameters (such as transmittance) after coupling are collected to evaluate the light emission effectiveness and consistency of the channel.
[0050] This solution uses high-definition image acquisition by a vision mechanism and precise algorithm recognition to directly quantify and calculate the positional deviation between the bar channel and the material. Combined with the high-precision motion adjustment of the electric displacement stage 3, it significantly improves the consistency and accuracy of multi-channel alignment.
[0051] In some embodiments, the vision mechanism includes:
[0052] The first vision module 11 has its optical axis set vertically downwards, facing the upper end of the Bar test platform 2;
[0053] The second vision module 13 has its optical axis set horizontally and facing the Bar test platform 2.
[0054] The first vision module 11 is fixedly mounted on the first vision movement adjustment mechanism 12. The second vision module 13 is fixedly mounted on the second vision movement adjustment mechanism 14. The first vision movement adjustment mechanism 12 and the second vision movement adjustment mechanism 14 are mounted on the gantry frame 15.
[0055] The gantry 15, the bar test stage 2, and the displacement stage 3 are fixed on the optical platform 1. The optical platform 1 is supported on the housing base 16, which is also fixedly equipped with an instrument rack for placing instruments.
[0056] In some embodiments, the Bar test bench 2 includes a clamp base 28 and a Bar movement adjustment mechanism 22, wherein the clamp base 28 is fixedly mounted on the Bar movement adjustment mechanism 22.
[0057] In some embodiments, the bar bar movement adjustment mechanism 22 includes a linear module and a rotary module. The linear module is configured to drive the bar bar to move along the Y-axis, where the Y-axis is the longitudinal direction of the bar bar (i.e., the length direction of the bar bar). The rotary module is configured to drive the bar bar to rotate around the Z-axis.
[0058] In some embodiments, the Bar bar clamp 21 includes a clamp body, the upper end face of which is provided with at least one vacuum adsorption hole 26, a nozzle seat is fixedly connected to the side wall of the clamp body, and a sealed air passage is machined inside the clamp body to connect the nozzle seat and all the vacuum adsorption holes 26, the nozzle seat being used to connect a vacuum generating device.
[0059] In some embodiments, the Bar bar clamp 21 further includes a clamping module 23 and a first limiting baffle 24. The first limiting baffle 24 and the clamping module 23 are respectively fixed at both ends of the clamp body along the Y-axis, so that the Bar bar is limited between the push block of the clamping module 23 and the first limiting baffle 24.
[0060] In some embodiments, the Bar bar clamp 21 further includes a second limiting baffle 25, which is fixedly installed on one side of the clamp body.
[0061] The clamping module 23 is a manual clamping module. The clamping module 23 includes a push block and a mounting base. The mounting base is fixedly connected to the fixture body. An adjusting screw is threaded onto the mounting base, and the end of the adjusting screw is connected to the push block.
[0062] In some embodiments, a clamp mounting base 4 is fixed on the displacement stage 3. The clamp mounting base 4 includes a horizontal plate and a vertical plate. A slide rail slider assembly 5 is fixed on the horizontal plate of the clamp mounting base 4. The slider of the slide rail slider assembly 5 is connected to a clamp mounting plate 6. The clamp mounting plate 6 is configured to detachably connect to a material clamp 7. An elastic element is provided between the clamp mounting plate 6 and the vertical plate of the clamp mounting base 4. A limiting post 61 is provided on the clamp mounting plate 6 for limiting the movement of the material clamp 7.
[0063] The elastic element is a spring. A spring limiting member 9 is fixed on the vertical plate of the clamp mounting base 4. The spring is sleeved on the spring limiting member 9. One end of the spring abuts against the spring limiting member 9 or the vertical plate of the clamp mounting base 4, and the other end of the spring is connected to or abuts against the clamp mounting plate 6. A limiting post 61 is provided on the clamp mounting plate 6, and the other end of the spring is sleeved on the limiting post 61.
[0064] The clamp mounting plate 6 is connected to a clamp lock 8 for fixing the material clamp 7.
[0065] In some embodiments, the material is any one of optical fiber, FA fixture, chip fixture, and PD, and the material fixture 7 is matched with the material. The bar testing device of the present invention includes several material fixtures 7. According to the testing requirements, the matching material fixture 7 is selected and installed on the fixture mounting plate 6. The fixture mounting plate 6 uses fixture latches 8 to fix the material fixture 7, making the fixture replacement super quick and convenient.
[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A bar testing device, characterized in that, include: A bar test stand is provided, wherein a bar clamp is fixedly installed on the bar test stand, and the bar clamp is configured to fix the bar. Two displacement stages are respectively set on both sides of the Bar test stage. Material clamps are fixedly installed on the displacement stages. The material clamps are configured to hold materials. The displacement stages are configured to drive the material clamps installed on them to move. A vision mechanism is used to acquire images of the Bar test bench area and transmit them to the control system; The control system is used to identify the relative positional deviation between the center position of each channel of the Bar bar and the alignment reference point of the material on both sides based on the image recognition of the Bar bar test platform area, and to send an adjustment command to the displacement stage based on the deviation, thereby controlling the displacement stage to drive the material clamp to move so that the test channel of the Bar bar is aligned with the material on both sides.
2. The bar testing device as described in claim 1, characterized in that: The vision mechanism includes: The first vision module has its optical axis set vertically downwards, facing the upper end of the Bar test platform; The second vision module has its optical axis set horizontally, facing the Bar test platform.
3. The bar testing device as described in claim 1, characterized in that: The bar test bench includes a clamp base and a bar moving and adjusting mechanism, with the clamp base fixedly mounted on the bar moving and adjusting mechanism.
4. The bar testing device as described in claim 3, characterized in that: The bar bar movement adjustment mechanism includes a linear module and a rotary module. The linear module is configured to drive the bar bar to move along the Y-axis, where the Y-axis is the longitudinal direction of the bar bar. The rotary module is configured to drive the bar bar to rotate around the Z-axis.
5. The bar testing device as described in claim 1, characterized in that: The Bar clamp includes a clamp body, the upper end face of which is provided with at least one vacuum adsorption hole, and an air nozzle seat is fixedly connected to the side wall of the clamp body. A sealed air passage is machined inside the clamp body to connect the air nozzle seat and all vacuum adsorption holes. The air nozzle seat is used to connect a vacuum generating device.
6. The bar testing device as described in claim 5, characterized in that: The bar clamp also includes a clamping module and a first limiting baffle. The first limiting baffle and the clamping module are respectively fixed at both ends of the clamp body along the Y-axis, so that the bar is limited between the push block of the clamping module and the first limiting baffle.
7. The bar testing device as described in claim 6, characterized in that: The bar clamp also includes a second limiting baffle, which is fixedly installed on one side of the clamp body.
8. The bar testing device as described in claim 1, characterized in that: A clamp mounting base is fixed on the displacement platform. The clamp mounting base includes a horizontal plate and a vertical plate. A slide rail slider assembly is fixed on the horizontal plate of the clamp mounting base. The slider of the slide rail slider assembly is connected to the clamp mounting plate. The clamp mounting plate is configured to detachably connect to the material clamp. An elastic element is provided between the clamp mounting plate and the vertical plate of the clamp mounting base.
9. The bar testing device as described in claim 8, characterized in that: The clamp mounting plate is connected to clamp locks for fixing material clamps; And / or, The elastic element is a spring. A spring limiting element is fixed on the vertical plate of the clamp mounting base. The spring is sleeved outside the spring limiting element. One end of the spring abuts against the spring limiting element or the vertical plate of the clamp mounting base, and the other end of the spring is connected to or abuts against the clamp mounting plate.
10. The bar testing device as described in claim 1 or 8, characterized in that: The material can be any one of optical fiber, FA fixture, chip fixture, or PD, and the material fixture is matched with the material.