CN112683517A - Testing system for static rigidity of photoelectron packaging flexible parallel platform - Google Patents
Testing system for static rigidity of photoelectron packaging flexible parallel platform Download PDFInfo
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- CN112683517A CN112683517A CN202110044376.2A CN202110044376A CN112683517A CN 112683517 A CN112683517 A CN 112683517A CN 202110044376 A CN202110044376 A CN 202110044376A CN 112683517 A CN112683517 A CN 112683517A
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Abstract
The invention discloses a testing system for static rigidity of a flexible parallel platform of photoelectronic package, which comprises a tension feeding device, wherein the tension feeding device comprises: connecting pin, pulley, flexible cable and screw drive mechanism, the upper portion of connecting pin with the flexible parallel platform of photoelectron encapsulation links to each other, the pulley butt the flexible cable just will the flexible cable divide into vertical section and horizontal segment, keeping away from of vertical section the one end of pulley with the lower part of connecting pin links to each other, keeping away from of horizontal segment the one end of pulley with screw drive mechanism's one end links to each other. The testing system for the static stiffness of the photoelectronic packaging flexible parallel platform aims to solve the technical problems that a static stiffness testing device in the prior art is uncertain in loading position, cannot continuously load and has loading impact.
Description
Technical Field
The invention belongs to the technical field of rigidity measuring devices, and particularly relates to a testing system for static rigidity of a photoelectronic packaging flexible parallel platform.
Background
The photoelectron packaging flexible parallel platform is used for carrying out precise alignment on an optical channel, and inevitably generates deformation under the action of external force in the working process, and the deformation directly influences the alignment precision of the optical channel, so that the testing and evaluation of the static rigidity of the platform are important prerequisites for ensuring the precise alignment of the optical channel.
In the prior art, the scheme for measuring the static stiffness of the optoelectronic packaging flexible parallel platform is as follows: due to the limitation of the space position, weights are placed on a movable platform of the photoelectronic packaging flexible parallel platform, the parallel platform is loaded, and then the deformation of the parallel platform is measured through detection equipment.
In the prior art, the method for testing the rigidity by directly loading (placing weights on a movable platform) on a parallel platform has the following defects:
(1) because the loading position is not fixed every time, the load cannot be ensured to act on the same point, and the unbalance loading condition can occur, so that the test result of the rigidity can be influenced.
(2) The loading mode in the prior art can not realize the continuous feeding of the load, and the load can only be changed by changing the weight.
(3) Certain impact may be generated on the platform during the loading process, which affects the motion precision of the platform.
Disclosure of Invention
Technical problem to be solved
Based on the static stiffness test system, the invention provides a static stiffness test system for a flexible parallel platform of optoelectronic package, and aims to solve the technical problems that a static stiffness test device in the prior art is uncertain in loading position, incapable of continuous loading and has loading impact.
(II) technical scheme
In order to solve the technical problem, the invention provides a testing system for the static stiffness of a flexible parallel platform of optoelectronic package, which comprises a tension feeding device, wherein the tension feeding device comprises: connecting pin, pulley, flexible cable and screw drive mechanism, the upper portion of connecting pin with the flexible parallel platform of photoelectron encapsulation links to each other, the pulley butt the flexible cable just will the flexible cable divide into vertical section and horizontal segment, keeping away from of vertical section the one end of pulley with the lower part of connecting pin links to each other, keeping away from of horizontal segment the one end of pulley with screw drive mechanism's one end links to each other.
Preferably, the extending direction of the vertical section is the same as the height direction of the optoelectronic package flexible parallel platform, and the extending direction of the horizontal section is perpendicular to the extending direction of the vertical section.
Preferably, the screw transmission mechanism includes: the tension feeding column penetrates through the feeding column support and is in threaded connection with the feeding support, one end of the feeding column is connected with the horizontal section of the flexible cable, and the crank is arranged at the other end of the feeding column.
Preferably, a tension meter is arranged between the horizontal section and the tension feeding column, and the horizontal section, the tension meter and the tension feeding column are installed along the same horizontal line.
Preferably, a guide member is disposed below the tension meter, and the guide member includes: the tension meter comprises a sliding block, a guide rail and a fixed support, wherein the guide rail is fixedly connected with the fixed support, the sliding block is fixed below the tension meter, a sliding groove in sliding fit with the guide rail is formed in the lower portion of the sliding block, and the guide rail is contained in the sliding groove.
Preferably, the flexible cord is a steel cord.
Preferably, the tension feeding device further comprises a pulley seat rotationally connected with the pulley, the testing system for the static rigidity of the photoelectronic packaging flexible parallel platform further comprises a detection platform, and the photoelectronic packaging flexible parallel platform, the fixed support, the feeding column support and the pulley seat are respectively arranged on the detection platform.
Preferably, the detection platform is an optical platform.
Preferably, the testing system for the static stiffness of the flexible parallel platform of the optoelectronic package further comprises a deformation amount detecting unit.
Preferably, the deformation amount detection unit includes: laser head, reflector, interference mirror and fixed mirror that turns to, the laser head is located testing platform is close to one side of screw drive mechanism, the reflector is located on the flexible parallel platform of optoelectronic packaging, the interference mirror is located testing platform is last and is located the laser head with between the reflector, fixed mirror that turns to is located the reflector top.
(III) advantageous effects
Compared with the prior art, the testing system for the static rigidity of the photoelectron packaging flexible parallel platform has the advantages that:
the loading direction is changed by transferring load through the flexible cable wound on the pulley, and the loading force is transferred through the connecting pin connected with the photoelectronic packaging flexible parallel platform, so that the accurate fixation of the loading position is realized. The problem of among the prior art because of spatial position restriction lead to loading position can not accurate fixed is solved.
The spiral transmission structure is adopted to rotate gradually to increase the loading force, so that continuous and stable loading is realized, the problem that continuous feeding of the load cannot be realized in the prior art is solved, and the loading flexibility is improved.
The deformation of the photoelectronic packaging flexible parallel platform is measured by using the laser interferometer, so that the displacement of the nanometer level can be detected, and the measurement precision is ensured.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 is a schematic perspective view of the overall structure of a testing system for the static stiffness of a flexible parallel platform of an optoelectronic package according to an embodiment of the present invention;
FIG. 2 is a schematic front view of a part of the structure of a testing system for the static stiffness of the flexible parallel platform of the optoelectronic package according to the embodiment of the invention;
FIG. 3 is a schematic perspective view of a part of the structure of a testing system for the static stiffness of the flexible parallel platform of the optoelectronic package according to the embodiment of the invention;
fig. 4 is a schematic diagram of a connection structure of a feeding device and an optoelectronic package flexible parallel platform in a testing system for testing the static stiffness of the optoelectronic package flexible parallel platform according to the embodiment of the invention;
FIG. 5 is a schematic diagram of a connection structure of a pulley, a pulley seat and a flexible cable in the testing system for the static stiffness of the photoelectronic package flexible parallel platform according to the embodiment of the present invention;
fig. 6 is a schematic diagram of a connection structure of a connection pin and an optoelectronic package flexible parallel platform in the testing system for the static stiffness of the optoelectronic package flexible parallel platform according to the embodiment of the present invention.
Description of reference numerals:
1. the optoelectronic package flexible parallel platform comprises an optoelectronic package flexible parallel platform, 2 a tension feeding device, 3 a detection platform, 4 a deformation detection unit, 21 a connecting pin, 22 a pulley, 23 a flexible cable, 24 a spiral transmission mechanism, 25 a tension meter, 26 a guide piece, 27 a pulley seat, 41 a laser head, 42 a reflector, 43 an interference mirror, 44 a fixed steering mirror, 45 a steering mirror support, 46 an interference mirror support, 231 a vertical section, 232 a horizontal section, 241 a feeding column support, 242 a tension feeding column, 243 a crank, 261 a sliding block, 262 a guide rail and 263 a fixed support.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; the two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through the inside of the two elements, or "in transmission connection", that is, connected in a power manner through various suitable manners such as belt transmission, gear transmission, or sprocket transmission. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The static stiffness test system of the flexible parallel platform of the optoelectronic package is further described with reference to fig. 1-6.
Referring to fig. 1-4, a testing system for testing static stiffness of an optoelectronic package flexible parallel platform includes a tension feeding device 2, where the tension feeding device 2 includes: the optoelectronic packaging flexible parallel platform comprises a connecting pin 21, a pulley 22, a flexible cable 23 and a spiral transmission mechanism 24, wherein the upper part of the connecting pin 21 is connected with the optoelectronic packaging flexible parallel platform 1, the pulley 22 abuts against the flexible cable 23 and divides the flexible cable 23 into a vertical section 231 and a horizontal section 232, one end of the vertical section 231, which is far away from the pulley 22, is connected with the lower part of the connecting pin 21, and one end of the horizontal section 232, which is far away from the pulley 22, is connected with one end of the spiral transmission mechanism 24.
Referring to fig. 6, in specific implementation, the upper portion of the connecting pin 21 is a countersunk structure, the optoelectronic packaging flexible parallel platform 1 is provided with a corresponding countersunk hole, the connecting pin 21 is placed in the countersunk hole of the optoelectronic packaging flexible parallel platform 1, and during loading, the connecting pin 21 presses down the hole wall of the countersunk hole under the action of the flexible cable 23 to transmit a downward loading force to the optoelectronic packaging flexible parallel platform 1.
Referring to fig. 5, in the present embodiment, the screw transmission structure realizes the conversion from the rotary motion to the linear motion by screwing the screw and the thread surface. When the spiral transmission structure rotates, the horizontal section 232 of the flexible cable 23 is pulled to move linearly to the right, the vertical section 231 moves downwards under the action of the direction change of the pulley 22, the connecting pin 21 is pulled, and the connecting pin 21 applies a downward force to the optoelectronic packaging flexible parallel platform 1, so that the force loading of the optoelectronic packaging flexible parallel platform 1 is realized.
According to the testing system for the static rigidity of the photoelectron packaging flexible parallel platform, the load is transferred through the flexible cable 23 wound on the pulley 22, the loading direction is changed, and the loading force is transferred through the connecting pin 21 connected with the photoelectron packaging flexible parallel platform 1, so that the accurate fixing of the loading position is realized. The problem of among the prior art because of spatial position restriction lead to loading position can not accurate fixed is solved. The spiral transmission structure is adopted to rotate gradually to increase the loading force, so that continuous and stable loading is realized, the problem that continuous feeding of the load cannot be realized in the prior art is solved, and the loading flexibility is improved.
According to the embodiment of the invention, the extending direction of the vertical section 231 is the same as the height direction of the flexible parallel platform 1 of the optoelectronic package, and the structure is favorable for applying a positive pressure to the flexible parallel platform 1 of the optoelectronic package and measuring the static rigidity of the flexible parallel platform 1 of the optoelectronic package. The horizontal section 232 extends in a direction perpendicular to the vertical section 231. The structure is beneficial to matching with a horizontally arranged spiral transmission structure and is beneficial to installation and integral leveling of the device.
Referring now more particularly to fig. 2-3, according to an embodiment of the present invention, the screw mechanism 24 includes: the feeding device comprises a feeding column support 241, a pulling force feeding column 242 and a crank 243, wherein the pulling force feeding column 242 penetrates through the feeding column support 241 and is in threaded connection with the feeding support, one end of the feeding column is connected with the horizontal section 232 of the flexible cable 23, and the crank 243 is arranged at the other end of the feeding column. In specific implementation, the feeding column support 241 has a transmission hole penetrating through the feeding column support 241, a transmission internal thread is arranged in the transmission hole, the pulling force feeding column 242 has a transmission external thread, and the pulling force feeding column 242 penetrates through the transmission hole and is in threaded connection with the feeding column support 241.
The operation of the screw mechanism 24 is as follows: the crank 243 is rotated to drive the tension feeding column 242 to rotate, the rotation direction of the crank 243 is controlled, the tension feeding column 242 is gradually screwed out, the horizontal section 232 of the flexible cable 23 is pulled to move rightwards, and loading is achieved. Gradual unloading may be achieved when the crank 243 is rotated in the reverse direction. Through the structure, the operation is facilitated, and continuous and stable loading is realized.
According to the embodiment of the present invention, a tension meter 25 is disposed between the horizontal section 232 and the tension feeding column 242, and the horizontal section 232, the tension meter 25 and the tension feeding column 242 are installed along the same horizontal line. In the embodiment, the tension meter 25 is arranged between the spiral transmission mechanism 24 and the flexible cable 23, so that the load value can be conveniently and directly read, and the condition that the gravity acceleration g needs to be estimated due to the use of weight loading in the traditional detection mode is avoided.
According to an embodiment of the present invention, a guide 26 is disposed below the tension gauge 25, and the guide 26 includes: the tension meter comprises a sliding block 261, a guide rail 262 and a fixed support 263, wherein the guide rail 262 is fixedly connected with the fixed support 263, the sliding block 261 is fixed below the tension meter 25, a sliding groove in sliding fit with the guide rail 262 is formed in the lower portion of the sliding block 261, and the guide rail 262 is accommodated in the sliding groove. In this embodiment, the slider 261 is fixedly connected with the tension meter 25, so that the tension meter 25 can be effectively prevented from overturning, the tension meter 25 is supported through the slider 261, and the slider 261 and the guide rail 262 slide relatively, so that the continuity and the fluency of the loading process are ensured.
In the above embodiment, the flexible cord 23 is a steel cord. The steel cords have a high tensile strength and a low axial deformation when under tension, which facilitates the transfer of loads, but the flexible wires 23 may, of course, be made of other materials than steel cords, such as fiber ropes or ropes woven from fibers and metal.
According to the specific embodiment of the present invention, the tension feeding device 2 further includes a pulley seat 27 rotatably connected to the pulley 22, the testing system for the static stiffness of the optoelectronic packaging flexible parallel platform further includes a detection platform 3, and the optoelectronic packaging flexible parallel platform 1, the fixed support 263, the feeding column support 241 and the pulley seat 27 are respectively disposed on the detection platform 3. In the embodiment, the detection platform 3 is arranged, so that the installation of the photoelectronic packaging flexible parallel platform 1 and each support is facilitated. In particular, the detection platform 3 is an optical platform, which facilitates to improve the precision of installation and detection.
According to the specific implementation mode of the invention, the testing system for the static stiffness of the flexible parallel platform of the optoelectronic package further comprises a deformation amount detecting unit 4, wherein the deformation amount detecting unit 4 is a laser interferometer. More specifically, the deformation amount detection unit 4 includes: the laser head 41 is arranged on one side, close to the screw transmission mechanism 24, of the detection platform 3, the reflective mirror 42 is arranged on the optoelectronic package flexible parallel platform 1, the interference mirror 43 is arranged on the detection platform 3 and located between the laser head 41 and the reflective mirror 42, and the fixed steering mirror 44 is arranged above the reflective mirror 42. During specific implementation, the fixed steering mirror 44 is fixed on the steering mirror support 45, the steering mirror support 45 is integrally in a gantry frame shape, the steering mirror support 45 is fixed on the detection platform 3, the interference mirror 43 is fixed on the interference mirror support 46, the interference mirror support 46 is fixed on the detection platform 3, and the interference mirror 43 can move up and down along the height direction of the interference mirror support 46 to realize position adjustment.
The fixed steering mirror 44 is used for changing the light path, the reflective mirror 42 is used for measuring the displacement of the optoelectronic package flexible parallel platform 1, and the displacement is read through information fed back by laser interference. The deformation of the photoelectronic packaging flexible parallel platform 1 is measured by using a laser interferometer, so that the displacement of the nanometer level can be detected, and the measurement precision is ensured. In specific implementation, a commercially available raney shao XL-80 laser interferometer can be used together with a corresponding support to realize deformation detection, and the detection method is a known technology and is not described herein again.
The application process of the testing system for the static rigidity of the photoelectronic packaging flexible parallel platform is as follows: firstly, the crank 243 is rotated to enable the flexible cable 23 to keep a straight state under the action of a pre-tightening force, then the crank 243 is rotated to load, and the loading force is transmitted through the connecting pin 21 connected with the photoelectron packaging flexible parallel platform 1, so that the accurate fixing of the loading position is realized. The loading amount is displayed in a number indicating area of the tension meter 25, and the spiral transmission structure 24 is adopted to rotate gradually to increase the loading force, so that continuous and stable loading is realized, and the loading flexibility is improved. The deformation of the photoelectron packaging flexible parallel platform 1 in the vertical direction is measured through a laser interferometer, and the static rigidity of the photoelectron packaging flexible parallel platform 1 in a calculation plane is calculated according to the relation between the force and the deformation. The deformation of the photoelectronic packaging flexible parallel platform is measured by using the laser interferometer, so that the displacement of the nanometer level can be detected, and the measurement precision is ensured.
It should be noted that the testing system for the static stiffness of the flexible parallel platform of the optoelectronic package is used for testing the static stiffness of the flexible parallel platform 1 of the optoelectronic package, and does not include the flexible parallel platform 1 of the optoelectronic package.
Compared with the prior art, the testing system for the static rigidity of the photoelectron packaging flexible parallel platform has the advantages that: the loading direction is changed by transferring load through the flexible cable wound on the pulley, and the loading force is transferred through the connecting pin connected with the photoelectronic packaging flexible parallel platform, so that the accurate fixation of the loading position is realized. The problem of among the prior art because of spatial position restriction lead to loading position can not accurate fixed is solved. The spiral transmission structure is adopted to rotate gradually to increase the loading force, so that continuous and stable loading is realized, the problem that continuous feeding of the load cannot be realized in the prior art is solved, and the loading flexibility is improved. The deformation of the photoelectronic packaging flexible parallel platform is measured by using the laser interferometer, so that the displacement of the nanometer level can be detected, and the measurement precision is ensured.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. The testing system for the static rigidity of the flexible parallel platform of the optoelectronic package is characterized by comprising a tension feeding device, wherein the tension feeding device comprises: connecting pin, pulley, flexible cable and screw drive mechanism, the upper portion of connecting pin with the flexible parallel platform of photoelectron encapsulation links to each other, the pulley butt the flexible cable just will the flexible cable divide into vertical section and horizontal segment, keeping away from of vertical section the one end of pulley with the lower part of connecting pin links to each other, keeping away from of horizontal segment the one end of pulley with screw drive mechanism's one end links to each other.
2. The testing system for the static stiffness of the optoelectronic package flexible parallel platform as claimed in claim 1, wherein the extending direction of the vertical section is the same as the height direction of the optoelectronic package flexible parallel platform, and the extending direction of the horizontal section is perpendicular to the extending direction of the vertical section.
3. The testing system for the static stiffness of the flexible parallel platform of the optoelectronic package according to claim 2, wherein the screw driving mechanism comprises: the tension feeding column penetrates through the feeding column support and is in threaded connection with the feeding support, one end of the feeding column is connected with the horizontal section of the flexible cable, and the crank is arranged at the other end of the feeding column.
4. The testing system for the static stiffness of the flexible parallel platform for the optoelectronic package according to claim 3, wherein a tension meter is arranged between the horizontal section and the tension feeding column, and the horizontal section, the tension meter and the tension feeding column are installed along the same horizontal line.
5. The testing system for the static stiffness of the flexible parallel platform of the optoelectronic package as claimed in claim 4, wherein a guide is arranged below the tension meter, and the guide comprises: the tension meter comprises a sliding block, a guide rail and a fixed support, wherein the guide rail is fixedly connected with the fixed support, the sliding block is fixed below the tension meter, a sliding groove in sliding fit with the guide rail is formed in the lower portion of the sliding block, and the guide rail is contained in the sliding groove.
6. The testing system for the static stiffness of the optoelectronic package flexible parallel platform as claimed in claim 5, wherein the flexible cable is a steel cable.
7. The system for testing the static stiffness of the flexible parallel platform for optoelectronic packaging according to claim 5 or 6, wherein the tension feeding device further comprises a pulley seat rotatably connected with the pulley, the system for testing the static stiffness of the flexible parallel platform for optoelectronic packaging further comprises a detection platform, and the flexible parallel platform for optoelectronic packaging, the fixed support, the feeding column support and the pulley seat are respectively arranged on the detection platform.
8. The testing system for the static stiffness of the flexible parallel platform of the optoelectronic package as claimed in claim 7, wherein the detection platform is an optical platform.
9. The testing system for the static stiffness of the flexible parallel platform of the optoelectronic package according to claim 8, further comprising a deformation amount detecting unit.
10. The testing system for the static stiffness of the flexible parallel platform of the optoelectronic package according to claim 9, wherein the deformation amount detecting unit comprises: laser head, reflector, interference mirror and fixed mirror that turns to, the laser head is located testing platform is close to one side of screw drive mechanism, the reflector is located on the flexible parallel platform of optoelectronic packaging, the interference mirror is located testing platform is last and is located the laser head with between the reflector, fixed mirror that turns to is located the reflector top.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110044376.2A CN112683517A (en) | 2021-01-13 | 2021-01-13 | Testing system for static rigidity of photoelectron packaging flexible parallel platform |
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| CN202110044376.2A CN112683517A (en) | 2021-01-13 | 2021-01-13 | Testing system for static rigidity of photoelectron packaging flexible parallel platform |
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| CN211697259U (en) * | 2020-01-06 | 2020-10-16 | 武汉锐科光纤激光技术股份有限公司 | Welding seam tension test workbench |
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- 2021-01-13 CN CN202110044376.2A patent/CN112683517A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104614254A (en) * | 2015-01-22 | 2015-05-13 | 广东工业大学 | Micropositioner rigidity measuring device and rigidity measuring method thereof |
| CN106226012A (en) * | 2016-07-12 | 2016-12-14 | 南京理工大学 | A kind of device testing parallel institution tension and compression rigidity |
| CN106338250A (en) * | 2016-11-10 | 2017-01-18 | 中南大学 | Tail-end pose detection system and method for flexible parallel platform with photoelectronic packaging |
| CN106768912A (en) * | 2016-11-14 | 2017-05-31 | 南京熊猫电子股份有限公司 | A kind of static submissive system safety testing device of industrial robot and method |
| CN109374241A (en) * | 2018-10-29 | 2019-02-22 | 天津大学 | A kind of measuring device of flexible hinge Static stiffness |
| CN110501125A (en) * | 2019-08-16 | 2019-11-26 | 天津大学 | A kind of flexible support torsion stiffness parameter Simplified Test Equipment and test method |
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Application publication date: 20210420 |