CN115951147A - Axial micro-motion detection device of pinhole electric connector - Google Patents
Axial micro-motion detection device of pinhole electric connector Download PDFInfo
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- CN115951147A CN115951147A CN202211710687.9A CN202211710687A CN115951147A CN 115951147 A CN115951147 A CN 115951147A CN 202211710687 A CN202211710687 A CN 202211710687A CN 115951147 A CN115951147 A CN 115951147A
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- 238000012545 processing Methods 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 239000010949 copper Substances 0.000 description 1
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- 238000005382 thermal cycling Methods 0.000 description 1
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Abstract
The invention relates to an axial micro-motion detection device of a pinhole electric connector, which comprises a control device, a first clamping component and a second clamping component, wherein the first clamping component and the second clamping component are oppositely arranged, the first clamping component comprises an XYZ-axis moving table and a first clamping assembly, the first clamping assembly is arranged on the XYZ-axis moving table, the second clamping component comprises a Z-axis lifting table, a piezoelectric ceramic motor and a second clamping assembly, the piezoelectric ceramic motor is arranged on the Z-axis lifting table, the second clamping assembly is arranged on the piezoelectric ceramic motor, the first clamping assembly is used for clamping a first contact element, the second clamping assembly is used for clamping a second contact element, the first contact element is matched with the second contact element, a sensor for detecting micro-motion information of the piezoelectric ceramic motor is arranged on the piezoelectric ceramic motor, the piezoelectric ceramic motor and the sensor are respectively in communication connection with the control device, and the first contact element and the second contact element are respectively in communication connection with a test instrument. Testing the performance of the two contacts at various micromotions is achieved.
Description
Technical Field
The invention relates to the technical field of electric connector detection equipment, in particular to an axial micro-motion detection device of a pinhole electric connector.
Background
The electric connector is an important electric component widely applied to power distribution or signal transmission, the main function is to realize the connection and disconnection of different equipment, different systems and different lines, and the performance index, quality and reliability level of the connection have the effect of non-negligible restriction and influence on the whole equipment or system. The core component of the electric connector is a contact element, and the contact elements of the two electric connectors are stably contacted to ensure that the circuits are normally communicated.
Subsea connectors are used for underwater electrical connections, and therefore these connectors can be subjected to harsh environments, such as alternating loads, e.g., sea wave vibration, fatigue loads, electromagnetic vibration, or thermal cycling, and relative motion between contacting surfaces that appear to be relatively stationary, with very small amplitudes of relative motion, typically in the order of microns in displacement amplitude, known as "micro-motion". The failure modes caused by fretting wear are mainly defects such as scratches, metal adhesion, pits (or pits), local wear streaks (or grooves), and surface microcracks. The contact member may slightly move under the action of the load, and contact impedance fluctuation may occur, which may cause problems such as instability, error, and instantaneous interruption of the transmission signal.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an axial micro-motion detection device of a pinhole electric connector in order to research the influence of micro-motion on the performance of an electric connector contact piece.
The technical scheme for solving the technical problems is as follows: the axial micro-motion detection device of the pinhole electric connector comprises a control device, a test instrument, and a first clamping component and a second clamping component which are oppositely arranged, wherein the first clamping component comprises an XYZ-axis moving table and a first clamping assembly, the first clamping assembly is installed on the XYZ-axis moving table, the second clamping component comprises a Z-axis lifting table, a piezoelectric ceramic motor and a second clamping assembly, the piezoelectric ceramic motor is installed on the Z-axis lifting table, the second clamping assembly is installed on the piezoelectric ceramic motor, the first clamping assembly is used for clamping a first contact element, the second clamping assembly is used for clamping a second contact element, the first contact element is matched with the second contact element, a sensor for detecting micro-motion information of the piezoelectric ceramic motor is arranged on the piezoelectric ceramic motor, the piezoelectric ceramic motor and the sensor are respectively in communication connection with the control device, and the first contact element and the second contact element are in communication connection with the test instrument.
The invention has the beneficial effects that: the first clamping assembly and the second clamping assembly are used for clamping two matched contact elements respectively, the mounting stability of the two contact elements is ensured, the second clamping assembly is arranged on the piezoelectric ceramic motor, the piezoelectric ceramic motor moves back and forth under the control of the control device to drive the second clamping assembly to generate a plurality of micron-sized micro-movements in the axial direction, the displacement, speed, acceleration and other information of the piezoelectric ceramic motor are fed back to the control device through a sensor, meanwhile, the on-off conditions of the first contact element and the second contact element are detected through a test instrument, whether the transmission signals of the contact elements are unstable, wrong and instantaneous-off conditions exist in the test under various micro-movements, and the influence of the various micro-movements on the performance of the contact elements is detected to lay a foundation for the normal use of the contact elements in complex environments such as the seabed and the like; the positions of the first clamping assembly and the second clamping assembly are adjusted by arranging the XYZ-axis moving table and the Z-axis lifting table, so that the first contact element and the second contact element are connected conveniently.
On the basis of the technical scheme, in order to achieve the convenience of use and the stability of equipment, the invention can also make the following improvements on the technical scheme:
further, controlling means includes host computer, controller, driver and power, the host computer with controller communication connection, the controller with driver communication connection, the driver with piezoceramics motor communication connection, the driver with the controller respectively with the power electricity is connected.
The beneficial effect of adopting the further technical scheme is that: the upper computer sends an operation instruction to the controller, the controller responds to the operation instruction and transmits a signal to the driver, and the driver drives the piezoelectric ceramic motor to move back and forth.
Further, the first clamping assembly comprises a first clamp base plate, a first fixing block and a first drill chuck, the first clamp base plate is detachably mounted on the XYZ-axis moving table, the first fixing block is detachably mounted on the first clamp base plate, the first drill chuck is detachably mounted on the first fixing block and is used for clamping the first contact element, a first through hole is formed in the side wall of the first fixing block, and a lead of the first contact element penetrates through the first through hole and is in communication connection with the test instrument.
The beneficial effect of adopting the further technical scheme is that: the first drill chuck can ensure that the first contact piece is stably clamped, and the first drill chucks of different sizes can be installed by replacing different first fixing blocks, so that the clamping requirements of the first contact pieces of different sizes are met, and the application range of the clamping assembly is widened; the through hole I is arranged to facilitate communication connection of the contact I and the testing instrument through a wire, so that the wire connection is convenient.
Further, the second clamping assembly comprises a second fixing block and a second drill chuck, the second fixing block is detachably mounted on the piezoelectric ceramic motor, the second drill chuck is mounted on the second fixing block and used for clamping the second contact element, a second through hole is formed in the side wall of the second fixing block, and a lead of the second contact element penetrates through the second through hole.
The beneficial effect of adopting the further technical scheme is that: the drill chuck II can ensure that the contact element II is stably clamped, and the drill chuck II with different sizes can be installed by replacing different fixing blocks II, so that the contact elements II with different sizes can be clamped, and the application range of the clamping assembly is enlarged; through the arrangement of the two through holes, the two convenient contact pieces are in communication connection with a testing instrument through wires, and the wires are convenient to connect.
Furthermore, locking screws are arranged on the first fixing block and the second fixing block.
The beneficial effect of adopting the further technical scheme is that: the first drill chuck and the second drill chuck are locked by the aid of the locking screw, and the mounting firmness of the first drill chuck and the second drill chuck is guaranteed.
Further, the micro-motion information includes displacement, velocity, and acceleration.
The beneficial effect of adopting the further technical scheme is that: the displacement, the speed and the acceleration of the piezoelectric ceramic motor are fed back through the sensor, so that the performance of the contact element under various micromotions can be detected more accurately.
Furthermore, the clamping range of the drill chuck I and the drill chuck II is phi 1.5 mm-phi 10mm.
The beneficial effect of adopting the further technical scheme is that: the contact pieces with different sizes are fixed, the application range is enlarged, and the processing cost is reduced.
Drawings
FIG. 1 is a schematic view of an axial micro-motion detection device according to the present invention;
FIG. 2 is a schematic structural view of an XYZ-axis moving table and a Z-axis lifting table of the present invention;
FIG. 3 is a schematic view of a first clamping assembly of the present invention;
FIG. 4 is a cross-sectional view of a first clamping assembly of the present invention;
FIG. 5 is a schematic view of a second clamping assembly of the present invention;
FIG. 6 is a schematic view of a piezoelectric ceramic motor according to the present invention;
FIG. 7 is a schematic view of a contact one and a contact two.
The reference numbers are recorded as follows: 1. a base floor; 2. an XYZ-axis moving stage; 2.1, fixing a plate; 2.2, a bracket; 2.3, a Z-axis knob; 2.4, an X-axis knob; 2.5, an X-axis sliding table; 2.6, Y-axis knob; 2.7, a Y-axis sliding table; 3. a Z-axis lifting table; 4. a first clamp bottom plate; 5. a first fixed block; 6. a drill chuck I; 7. a first contact element; 8. a second clamp bottom plate; 9. a second fixing block; 10. a drill chuck II; 11. a second contact element; 12. a piezoelectric ceramic motor; 13. locking the screw rod; 14. an upper computer; 15. a controller; 16. a driver; 17. and a power supply.
Detailed Description
In the description of the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, the axial micromotion according to the invention being a micromotion along the axial direction of the contact piece.
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 7, the present invention discloses an axial micro-motion detection device of a pinhole electrical connector, comprising a control device, a test instrument, a first clamping component and a second clamping component, wherein the first clamping component and the second clamping component are oppositely arranged, the first clamping component comprises an XYZ-axis moving table 2 and a first clamping component, the XYZ-axis moving table 2 is detachably mounted on a base bottom plate 1 through screws, the first clamping component is mounted on the XYZ-axis moving table 2, the second clamping component comprises a Z-axis lifting table 3, a piezoelectric ceramic motor 12 and a second clamping component, the piezoelectric ceramic motor 12 is mounted on the Z-axis lifting table 3, the Z-axis lifting table 3 is detachably mounted on the base bottom plate 1 through screws, the second clamping component is mounted on the piezoelectric ceramic motor 12, the first clamping component is used for clamping a contact piece 7, the second clamping component is used for clamping a contact piece 11, the first contact piece 7 is matched with the second contact piece 11, a sensor for detecting micro-motion information of the piezoelectric ceramic motor 12 is arranged on the contact piece, the piezoelectric ceramic motor 12 comprises displacement, speed and the contact piece 12 and the contact piece is respectively connected with the control device (not shown in the figure) and the test instrument respectively.
Wherein, the sensor is a displacement sensor and is used for detecting the micro-motion information of the piezoelectric ceramic motor 12; the testing instrument is a micro-resistance tester or a transient interruption detector and the like and is used for detecting whether the two contact pieces have the conditions of instability, errors and transient interruption of transmission signals.
In this embodiment, the first contact element 7 is a jack, the second contact element 11 is a pin, the piezoelectric ceramic motor 12 drives the pin to slightly move, and whether the jack and the pin have the conditions of unstable, wrong and instantaneous interruption of transmission signals is detected through a test instrument.
Optionally, the first contact 7 may be a pin, and the second contact 11 may be a socket.
The precision of the piezoelectric ceramic motor 12 reaches the nanometer level, and the piezoelectric ceramic motor 12 has the advantages of instant response capability, small size and large output acting force, and in the embodiment, the piezoelectric ceramic motor 12 is a linear piezoelectric ceramic motor, so that the second clamping component is driven to move.
The control device comprises an upper computer 14, a controller 15, a driver 16 and a power supply 17, wherein the upper computer 14 is in communication connection with the controller 15, the controller 15 is in communication connection with the driver 16, the driver 16 is in communication connection with the piezoelectric ceramic motor 12, the controller 15 and the driver 16 are respectively in electrical connection with the power supply 17, and the power supply 17 is a switching power supply. The operation instruction is sent to the controller 15 through the upper computer 14, the controller 15 responds to the operation instruction, and signal transmission to the driver 16, the driver 16 drives the piezoelectric ceramic motor 12 to slightly move, the sensor is in communication connection with the controller 15, information such as displacement, speed and acceleration of the piezoelectric ceramic motor 12 is fed back to the controller 15, the piezoelectric ceramic motor 12 can realize various micro-movement forms at a speed of several micrometers per second to the highest 250mm per second, and the test requirements of the contact piece under the various micro-movement forms are met.
Wherein the fretting wear between the two contact members increases with the number of fretting cycles. The amplitude of the micromotion can be represented by measuring the displacement through the sensor, the friction force and the temperature rise in the micromotion process can be estimated by measuring the speed and the acceleration, and the internal dominant mechanism of the contact wear can be further inferred. For example, when two general copper-based contacts generate sinusoidal vibration with amplitude of 10 microns and frequency of 10Hz by using the device under room temperature conditions, the displacement value measured by the sensor satisfies u (t) =10sin (20 π t), the measured velocity value satisfies v (t) =200cos (20 π t), the measured acceleration value satisfies a (t) = -4000sin (20 π t), and the accumulation is performed by 10 4 When the micro-motion is performed for more than one cycle, the resistance value between the first contact piece 7 and the second contact piece 11 measured by the testing instrument fluctuates, and when the micro-motion 10 occurs 5 In more than one cycle, the resistance values of the first contact element 7 and the second contact element 11 are increased by more than one time, the phenomenon of unstable signal transmission between the two contact elements occurs, and the internal mechanism of abrasion of the first contact element 7 and the second contact element 11 is a mixed mechanism of adhesive abrasion and abrasive wear.
The first clamping assembly comprises a first clamp bottom plate 4, a first fixed block 5 and a first drill chuck 6, the first clamp bottom plate 4 is detachably mounted on the XYZ axis moving table 2, the first fixed block 5 is detachably mounted on the first clamp bottom plate 4, the first drill chuck 6 is detachably mounted on the first fixed block 5, the first drill chuck 6 is used for clamping the first contact element 7, a first through hole is formed in the side wall of the first fixed block 5, and a lead of the first contact element 7 penetrates through the first through hole to be in communication connection with the test instrument. The contact element I7 is connected with a test instrument through a lead, so that the on-off condition of the contact element I7 under different micro motions can be detected in real time through the test instrument conveniently.
Specifically, the XYZ-axis moving table 2 comprises a fixed plate 2.1 arranged at the bottom, the fixed plate 2.1 is detachably mounted on a base bottom plate 1, two hinged supports 2.2 are mounted on the fixed plate 2.1, a first mounting plate and a Z-axis knob 2.3 are arranged at the upper end of each support 2.2, the Z-axis knob 2.3 is in transmission connection with a Z-axis screw, and when the Z-axis knob 2.3 rotates, the Z-axis screw is driven to rotate, so that the first mounting plate is driven to lift; a Y-axis knob 2.4 and a Y-axis screw rod which are connected are mounted on the mounting plate I, the Y-axis screw rod is connected with a Y-axis sliding table 2.7 through threads, and when the Y-axis knob 2.4 is rotated, the Y-axis screw rod is driven to rotate, so that the Y-axis sliding table 2.7 is driven to move along the Y-axis screw rod in the Y-axis direction; be equipped with mounting panel two on Y axle slip table 2.7, X axle knob 2.4 and X axle screw rod are installed on mounting panel two, X axle screw rod and X axle slip table 2.5 threaded connection, install on X axle slip table 2.5 anchor clamps bottom plate 4, when rotating X axle knob 2.4, it is rotatory to drive X axle screw rod, thereby it removes at X axle direction to drive X axle slip table 2.5 and anchor clamps bottom plate 4 along X axle screw rod, realize through three knob that X axle screw rod is rotatory
And adjusting the first clamp bottom plate 4 and the first contact piece 7 thereof in the X, Y and Z directions to ensure that the first contact piece 7 is tightly contacted with the second contact piece 11 of the first contact piece 5.
The second clamping assembly comprises a second fixed block 9 and a second drill chuck 10, the second fixed block 9 is detachably mounted on the piezoelectric ceramic motor 12, the second fixed block 9, the second drill chuck 10 and a second contact element 11 of the second drill chuck are driven to synchronously slightly move when the piezoelectric ceramic motor 12 slightly moves, and the piezoelectric ceramic motor 12 passes through a second clamp bottom plate 8
The detachable is installed on the Z-axis lifting table 3, the second drill chuck 10 is installed on the second fixed block 9, 0 the second drill chuck 10 is used for clamping the second contact element 11, and a through hole is formed in the side wall of the second fixed block 9
And a second hole, wherein the lead of the second contact element 11 passes through the second through hole to be in communication connection with the test instrument. The second contact element 11 is connected with a test instrument through a lead, so that the on-off condition of the second contact element 11 under different micro motions can be detected in real time through the test instrument conveniently.
And the first fixing block 5 and the second fixing block 9 are both provided with a locking screw rod 13 or a locking screw. The first drill chuck 6 and the second drill chuck 10 are locked by the locking screw 13 arranged at the position 5, and the mounting firmness of the first drill chuck 6 and the second drill chuck 10 is ensured. The locking screw 13 is provided with a flower-shaped disc head, so that the locking screw 13 can be conveniently rotated to lock the first drill chuck 6 and the second drill chuck 10.
The clamping range of the drill chuck I6 and the drill chuck II 10 is phi 1.5 mm-phi 10mm, so that the contact elements with different sizes can be fixed, the application range is enlarged, and the processing cost is reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An axial micro-motion detection device of a pinhole electric connector is characterized by comprising a control device, a test instrument, a first clamping component and a second clamping component, wherein the first clamping component and the second clamping component are oppositely arranged, the first clamping component comprises an XYZ-axis moving table and a first clamping assembly, the first clamping assembly is installed on the XYZ-axis moving table, the second clamping component comprises a Z-axis lifting table, a piezoelectric ceramic motor and a second clamping assembly, the piezoelectric ceramic motor is installed on the Z-axis lifting table, the second clamping assembly is installed on the piezoelectric ceramic motor, the first clamping assembly is used for clamping a first contact piece, the second clamping assembly is used for clamping a second contact piece, the first contact piece is matched with the second contact piece, a sensor used for detecting micro-motion information of the piezoelectric ceramic motor is arranged on the piezoelectric ceramic motor, the piezoelectric ceramic motor and the sensor are respectively in communication connection with the control device, and the first contact piece and the second contact piece are respectively in communication connection with the test instrument.
2. The axial micro-motion detection device according to claim 1, wherein the control device comprises an upper computer, a controller, a driver and a power supply, the upper computer is in communication connection with the controller, the controller is in communication connection with the driver, the driver is in communication connection with the piezoelectric ceramic motor, and the driver and the controller are respectively electrically connected with the power supply.
3. The axial micro-motion detection device as claimed in claim 1 or 2, wherein the first clamping assembly comprises a first clamp base plate, a first fixed block and a first drill chuck, the first clamp base plate is detachably mounted on the XYZ axis moving table, the first fixed block is detachably mounted on the first clamp base plate, the first drill chuck is detachably mounted on the first fixed block, the first drill chuck is used for clamping the first contact element, a first through hole is formed in a side wall of the first fixed block, and a lead of the first contact element passes through the first through hole to be in communication connection with the test instrument.
4. The axial micro-motion detection device according to claim 3, wherein the second clamping assembly comprises a second fixed block and a second drill chuck, the second fixed block is detachably mounted on the piezoelectric ceramic motor, the second drill chuck is mounted on the second fixed block, the second drill chuck is used for clamping the second contact element, a second through hole is formed in the side wall of the second fixed block, and a lead of the second contact element penetrates through the second through hole to be in communication connection with the test instrument.
5. The axial micro-motion detection device according to claim 4, wherein the first fixing block and the second fixing block are both provided with locking screws.
6. The axial micromotion detection device of claim 1 wherein the micromotion information includes displacement, velocity and acceleration.
7. The axial micro-motion detection device as claimed in claim 4, wherein the clamping range of the first drill chuck and the second drill chuck is from 1.5mm to 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211710687.9A CN115951147A (en) | 2022-12-29 | 2022-12-29 | Axial micro-motion detection device of pinhole electric connector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211710687.9A CN115951147A (en) | 2022-12-29 | 2022-12-29 | Axial micro-motion detection device of pinhole electric connector |
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| CN115951147A true CN115951147A (en) | 2023-04-11 |
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| CN202211710687.9A Pending CN115951147A (en) | 2022-12-29 | 2022-12-29 | Axial micro-motion detection device of pinhole electric connector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759376A (en) * | 2023-08-22 | 2023-09-15 | 上海隐冠半导体技术有限公司 | Piezoelectric driving clamping device, motion system and substrate detection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590001A (en) * | 2012-02-24 | 2012-07-18 | 西南交通大学 | Testing method for multi-directional fretting fatigue and testing machine therefor |
| CN102680152A (en) * | 2012-05-14 | 2012-09-19 | 浙江理工大学 | Device for testing insertion and withdrawal forces of contact elements of electric connectors in high temperature environments |
| CN108535266A (en) * | 2018-04-12 | 2018-09-14 | 河北工业大学 | Electric connector fretting wear detecting system based on Infrared Thermography Technology and method |
| CN211904633U (en) * | 2020-05-20 | 2020-11-10 | 上海屹领电子科技有限公司 | Mechanical performance detection device for contact element of electric connector |
-
2022
- 2022-12-29 CN CN202211710687.9A patent/CN115951147A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590001A (en) * | 2012-02-24 | 2012-07-18 | 西南交通大学 | Testing method for multi-directional fretting fatigue and testing machine therefor |
| CN102680152A (en) * | 2012-05-14 | 2012-09-19 | 浙江理工大学 | Device for testing insertion and withdrawal forces of contact elements of electric connectors in high temperature environments |
| CN108535266A (en) * | 2018-04-12 | 2018-09-14 | 河北工业大学 | Electric connector fretting wear detecting system based on Infrared Thermography Technology and method |
| CN211904633U (en) * | 2020-05-20 | 2020-11-10 | 上海屹领电子科技有限公司 | Mechanical performance detection device for contact element of electric connector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759376A (en) * | 2023-08-22 | 2023-09-15 | 上海隐冠半导体技术有限公司 | Piezoelectric driving clamping device, motion system and substrate detection method |
| CN116759376B (en) * | 2023-08-22 | 2023-12-01 | 上海隐冠半导体技术有限公司 | Piezoelectric driving clamping device, motion system and substrate detection method |
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Application publication date: 20230411 |