CN110595359A - Online precision detection equipment for ball hinge - Google Patents
Online precision detection equipment for ball hinge Download PDFInfo
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- CN110595359A CN110595359A CN201910884536.7A CN201910884536A CN110595359A CN 110595359 A CN110595359 A CN 110595359A CN 201910884536 A CN201910884536 A CN 201910884536A CN 110595359 A CN110595359 A CN 110595359A
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- ball hinge
- ball
- spin
- hinge
- rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
Abstract
The invention relates to the technical field of hinge production, in particular to online precision detection equipment for a ball hinge; the device comprises a placing device for placing the ball hinge, a transmission device for driving the placing device to move and a measuring device for measuring the position of the ball hinge; the placing device comprises a tool, and a ball hinge mechanism to be tested, a pitching adjusting mechanism and a self-rotating adjusting mechanism which are connected to the tool; the invention places the ball hinge in the ball hinge mechanism to be measured on the placing device, the pitching adjusting mechanism adjusts the position of the ball hinge in the pitching direction and the spinning adjusting mechanism adjusts the position of the ball hinge in the spinning direction, the transmission device drives the placing device to move, then the measuring device carries out a plurality of position measurements, after the measurement is finished, the coordinates of the target ball centers of all the measured ball hinges are fitted into a spherical surface, then the root mean square value between the coordinates of the target ball centers and the fitted spherical surface is calculated, and the value is the precision value of the ball hinge.
Description
Technical Field
The invention relates to the technical field of hinge production, in particular to online precision detection equipment for a ball hinge.
Background
The parallel mechanism is a closed-loop motion system formed by a plurality of parallel chains, namely, one ends of the plurality of motion chains are simultaneously connected with a terminal operator with a plurality of degrees of freedom. The idea of a parallel mechanism dates back to 1895 at the earliest, and several physicians Cauchy started studying an "articulated octahedron", which is the earliest parallel mechanism known so far; in 1938 Pollard adopts a parallel mechanism to design an automobile paint spraying device. In 1949, V1E1Gough designed a similar mechanism for testing tires, which is a parallel mechanism that is really used; in 1965, D1Stewart firstly proposed a six-degree-of-freedom parallel mechanism with 6 legs connecting a base platform and a movable platform, and published papers describe the application of the mechanism to a flight simulator. The parallel mechanism has the following advantages: 1. the composite material has high rigidity-weight ratio, high rigidity and stable structure; 2. the load weight ratio is higher; 3. the error is small, and the precision is high; 4. high-speed movement is easy to realize; 5. in position solution, the positive solution is difficult and the reverse solution is very easy; 6. simple structure, the modularization degree is high.
Ball hinges, as a hinge mechanism that can provide three degrees of freedom, have found a large number of applications in various forms of parallel mechanisms; the ball hinge is used as an important component of the parallel mechanism, the ball connecting hinge is a connecting accessory of an actuator and an adjusting mechanism used in automatic control, the ball connecting hinge adopts a ball bearing structure and has the advantages of flexible and accurate control and large torsion angle, and the ball hinge can flexibly bear the pressure from different surfaces due to the adoption of the ball bearing structure and is convenient to install and adjust, safe and reliable. Therefore, it is widely used in automatic control systems in the industries of electric power, petrochemical industry, metallurgy, mining, light spinning and the like.
The precision of the ball hinge has great influence on the overall motion precision of the parallel mechanism, and the gap of the ball hinge is difficult to correct and compensate in the kinematic calibration of the parallel mechanism; in the prior art, the precision testing of the ball hinge is performed in a few cases, and the research on the online precision detection device of the ball hinge is imperative in order to provide a basis for the selection of the ball hinge of the parallel mechanism and improve the detection efficiency and precision.
Disclosure of Invention
The invention mainly solves the technical problem of providing the ball hinge on-line precision detection equipment, wherein the ball hinge is placed in a ball hinge mechanism to be detected on a placing device, the pitching adjusting mechanism adjusts the position of the ball hinge in the pitching direction and the spinning adjusting mechanism adjusts the position of the ball hinge in the spinning direction, a transmission device drives the placing device to move, then a plurality of position measurements are carried out by a measuring device, the coordinates of the target ball centers of all the measured ball hinges are fitted into a spherical surface after the measurement is finished, and then the root mean square value between the coordinates of the target ball centers and the fitted spherical surface is calculated, and the value is the precision value of the ball hinge.
In order to solve the technical problems, the invention adopts a technical scheme that: the ball hinge online precision detection equipment comprises a placing device for placing a ball hinge, a transmission device for driving the placing device to move and a measuring device for measuring the position of the ball hinge, wherein the transmission device is used for driving the placing device to move; the placing device comprises a tool, a ball hinge mechanism to be tested, a pitching adjusting mechanism and a self-rotating adjusting mechanism, wherein the ball hinge mechanism to be tested is used for placing the ball hinge on the tool, the pitching adjusting mechanism is used for controlling and adjusting the position of the ball hinge in the pitching direction, and the self-rotating adjusting mechanism is used for adjusting the position of the ball hinge in the self-rotating direction.
As an improvement of the present invention, the pitch adjustment mechanism includes a pitch adjustment assembly and a yaw adjustment assembly that are disposed perpendicular to each other and are each used for adjusting the position of the ball hinge in the pitch direction.
As a further improvement of the present invention, the ball hinge mechanism to be tested includes a target ball seat, a transition rod, a ball hinge rod and a ball hinge seat, the ball hinge seat is connected to the tool, the ball hinge rod is mounted on the ball hinge seat, one end of the transition rod is connected to the ball hinge rod, the other end of the transition rod is connected to the target ball seat, and the target ball seat is used for placing a target ball of the ball hinge.
As a further improvement of the present invention, the pitching adjusting assembly includes a pitching motor, a pitching coupler, a pitching transmission shaft, a bearing seat, a rocker arm and a magnetic steel fixing seat, the pitching motor is mounted on the pitching motor seat, the pitching transmission shaft is mounted on the bearing seat, the pitching motor is connected with the pitching transmission shaft through the pitching coupler, the pitching transmission shaft is connected with the rocker arm and the magnetic steel fixing seat, a fixing rod and a sliding groove are arranged at the top of the rocker arm, a sliding rod is movably connected in the sliding groove, the sliding rod is fixed in the sliding groove through a limit nut, a gap is arranged between the fixing rod and the sliding rod, and a hall sensor for sensing the angular position of the rocker arm is mounted on the rocker arm.
As a further improvement of the present invention, the fixing lever is connected to the sliding lever by a spring.
As a further improvement of the invention, the structure of the yaw adjustment assembly is the same as the structure of the pitch adjustment assembly.
As a further improvement of the present invention, the spin adjustment mechanism includes a spin motor, a spin coupling, a worm wheel, and a spin platform, the spin motor is mounted on a spin motor base, the worm is mounted on a worm support, the worm wheel is mounted on a worm wheel support, the spin motor is connected to the worm through the spin coupling, the worm is engaged with the worm wheel, the worm wheel is connected to the spin platform, an encoder is connected between the worm wheel and the spin platform, the encoder is configured to sense a rotation position of the spin platform, an interface is disposed on the spin platform, and the interface is connected to a hinge of the ball hinge.
As a further improvement of the invention, the transmission device comprises a conveyor belt and a test platform arranged on the conveyor belt, and the tool is connected to the test platform.
As a further improvement of the present invention, the testing platform is provided with a first positioning block, a second positioning block and a plurality of screw holes, the first positioning block and the second positioning block are arranged vertically to each other, and two edges of the fixture respectively abut against the first positioning block and the second positioning block and are connected in the screw holes through screws so that the fixture is fixedly connected to the testing platform.
As a further development of the invention, the measuring device comprises a support, a tripod and a laser tracker, the tripod being connected to the support and the laser tracker being connected to the tripod.
The invention has the beneficial effects that: compared with the prior art, the ball hinge is placed in the ball hinge mechanism to be measured on the placing device, the pitching adjusting mechanism adjusts the position of the ball hinge in the pitching direction and the spinning adjusting mechanism adjusts the position of the ball hinge in the spinning direction, the transmission device drives the placing device to move, then the measuring device carries out a plurality of position measurements, after the measurement is finished, the coordinates of the target ball centers of all the measured ball hinges are fitted into a spherical surface, then the root mean square value between the coordinates of the target ball centers and the fitted spherical surface is calculated, and the value is the precision value of the ball hinge.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the placement device of the present invention;
FIG. 3 is a schematic structural diagram of a ball hinge mechanism to be tested according to the present invention;
FIG. 4 is a schematic view of the construction of the pitch adjustment assembly of the present invention;
FIG. 5 is a schematic structural view of a magnetic steel fixing base according to the present invention;
FIG. 6 is a schematic structural view of a spin adjustment mechanism of the present invention;
FIG. 7 is a schematic structural view of the transmission of the present invention;
reference numerals: 1-placing device, 11-tool, 12-ball hinge mechanism to be tested, 121-target ball, 122-target ball seat, 123-transition rod, 124-ball hinge rod, 125-ball hinge seat, 13-pitch adjusting mechanism, 131-pitch adjusting component, 132-pitch motor, 133-pitch coupler, 134-pitch transmission shaft, 135-bearing seat, 136-rocker arm, 1361-fixed rod, 1362-sliding chute, 1363-sliding rod, 1364-spring, 1365-hall sensor, 1366-limit nut, 137-magnetic steel fixing seat, 138-pitch motor seat, 1381-end cover, 1382-magnetic steel mounting hole, 1383-magnetic steel, 139-brake, 14-spin adjusting mechanism, 141-spin motor, 142-spin coupler, 143-worm, 144-worm wheel, 145-spin platform, 146-encoder, 147-spin motor base, 148-worm support base, 149-worm wheel support base, 1410-interface, 1411-spin brake, 2-transmission device, 21-conveyor belt, 22-test platform, 23-first positioning block, 24-second positioning block, 25-screw hole, 3-measuring device, 31-support, 32-tripod and 33-laser tracker.
Detailed Description
As shown in fig. 1 to 7, the present invention provides an online precision detection apparatus for a ball hinge, which includes a placement device 1 for placing the ball hinge, a transmission device 2 for driving the placement device 1 to move, and a measurement device 3 for measuring the position of the ball hinge.
As shown in fig. 2, the placing device 1 includes a tool 11, a ball hinge mechanism 12 to be tested connected to the tool 11 and used for placing the ball hinge, a pitch adjusting mechanism 13 used for controlling and adjusting the position of the ball hinge in the pitch direction, and a spin adjusting mechanism 14 used for adjusting the position of the ball hinge in the spin direction.
In the present invention, as shown in fig. 3, the ball hinge mechanism 12 to be tested includes a target ball seat 122, a transition rod 123, a ball hinge rod 124 and a ball hinge seat 125, the ball hinge seat 125 is connected to the tooling 11, the ball hinge rod 124 is installed on the ball hinge seat 125, one end of the transition rod 123 is connected to the ball hinge rod 124, the other end of the transition rod 123 is connected to the target ball seat 122, and a target ball 121 of the ball hinge is placed on the target ball seat 122; specifically, in the ball hinge mechanism 12 to be measured, the ball hinge base 125 is fixed to the tool 11 by means of screw connection, the ball hinge rod 124 is connected to the transition rod 123 by means of screw connection, the target ball base 122 is fixed to the end of the transition rod 123 by means of magnetic force, and the target ball 121 is fixed to the target ball base 122 by means of magnetic force.
In the present invention, in order to facilitate the adjustment and fixation of the ball hinge in the pitch direction, the pitch adjustment mechanism 13 includes a pitch adjustment assembly 131 and a yaw adjustment assembly 1310 that are disposed perpendicular to each other and are used to adjust the position of the ball hinge in the pitch direction.
As shown in fig. 4, the pitching adjusting assembly 131 includes a pitching motor 132, a pitching coupler 133, a pitching transmission shaft 134, a bearing seat 135, a rocker arm 136 and a magnetic steel fixing seat 137, the pitching motor 132 is mounted on the pitching motor seat 138, the pitching transmission shaft 134 is mounted on the bearing seat 135, the pitching motor 132 is connected with the pitching transmission shaft 134 through the pitching coupler 133, the pitching transmission shaft 134 is connected with the rocker arm 136 and the magnetic steel fixing seat 137, a fixing rod 1361 and a sliding groove 1362 are arranged at the top of the rocker arm 136, a sliding rod 1363 is movably connected in the sliding groove 1362, the sliding rod 1363 is fixed in the sliding groove 1362 through a limit nut 1366, a gap is arranged between the fixing rod 1361 and the sliding rod 1363; a hall sensor 1365 for sensing the angular position of the rocker arm 136 is mounted on the rocker arm 136; the fixing bar 1361 is connected to the sliding bar 1363 by a spring 1364. Both ends of the fixed rod 1361 and the sliding rod 1363 are connected with a rocker arm, one rocker arm is connected with a transmission shaft, and the other rocker arm is directly connected with a bearing seat. Specifically, the pitch adjusting assembly 131 is used for adjusting the position of the ball hinge in the pitch direction, and comprises a pitch motor 132, a pitch brake 139, a pitch motor base 138, a pitch coupler 133, a pitch transmission shaft 134, an end cover 1381, a bearing seat 135, a rocker arm 136, a spring 1364, a limit nut 1366, a fixing rod 1361, a sliding rod 1363, a hall sensor 1365, a magnetic steel fixing seat 137 and magnetic steel 1383; the pitching brake 139 is fixed at the rear end of the pitching motor 132, the pitching motor 132 is fixed on the pitching motor base 138 in a screw connection mode, the pitching transmission shaft 134 is connected with the pitching motor 132 through the pitching coupler 133, the end cover 1381 is fixed on the bearing base 135 in a screw connection mode, one end of the pitching transmission shaft 134 is fixed with the rocker arm 136, the top end part of the rocker arm 136 is provided with a fixing rod 1361 and a sliding rod 1363, the fixing rod 1361 is matched through a shaft hole, the limiting nut 1366 is fixed on the rocker arm 136 in a limiting mode, the sliding rod 1363 is limited through the limiting nut 1366 and is installed in the sliding groove 1362 of the rocker arm 136 in a tensioning mode through a spring; the two ends of the spring 1364 are connected with the fixed rod 1361 and the sliding rod 1363; a hall sensor 1365 is fixed on the rocker arm 136 and used for feeding back the angular position of the rocker arm 136; as shown in fig. 5, the magnetic steel 1383 is adsorbed to the magnetic steel fixing seat 137 by the action of magnetic force, a plurality of magnetic steel mounting holes 1382 are uniformly distributed on the magnetic steel fixing seat 137, and a specific index angle needs to be determined according to the stroke of the measured hinge.
Within the present invention, the structure of yaw adjustment assembly 1310 is the same as the structure of pitch adjustment assembly 131, and the composition and function of yaw adjustment assembly 1310 is the same as pitch adjustment assembly 131, except that the size and overall assembly orientation of rocker arm 136 is different from pitch adjustment assembly 131.
As shown in fig. 6, the spin adjustment mechanism 14 includes a spin motor 141, a spin coupling 142, a worm 143, a worm gear 144 and a spin platform 145, the spin motor 141 is mounted on a spin motor base 147, the worm 143 is mounted on a worm support base 148, the worm gear 144 is mounted on the worm support base 149, the spin motor 141 is connected with a spin brake 1411, the spin motor 141 is connected with the worm 143 through the spin coupling 142, the worm 143 is connected with the worm gear 144 in a meshing manner, the worm gear 144 is connected with the spin platform 145, an encoder 146 is connected between the worm gear 144 and the spin platform 145, the encoder 146 is used for sensing the rotation position of the spin platform 145, an interface 1410 is arranged on the spin platform 145, and the interface 1410 is connected with; specifically, the spin adjusting mechanism 14 is used for adjusting the position of the ball hinge in the spin direction, and is composed of a spin motor 141, a spin brake 1411, a spin motor base 147, a spin coupling 142, a worm support base 148, a worm 143, a spin platform 145, an encoder 146, a worm wheel 144, and a worm wheel support base 149, wherein the spin brake 1411 is fixed at the rear end of the spin motor 141, the spin motor 141 is fixed on the spin motor base 147 in a screw connection manner, the worm 143 is fixed on the worm support base 148, and then is connected with the spin motor 141 through the spin coupling 142, the worm wheel 144 is fixed on the worm wheel support base 149 and then is meshed with the worm 143, and the worm support base 148 and the worm wheel support base 149 are fixed on the tool 11 in a screw; the spin platform 145 is fixed on the worm wheel 144 in a screw connection mode, and the encoder 146 is installed between the worm wheel 144 and the spin platform 145 and used for feeding back the rotation position of the spin platform 145; the spin platform 145 leaves a corresponding interface 1410 for connecting the hinge of the ball hinge under test.
As shown in fig. 7, in order to perform batch detection, the transmission device 2 includes a conveyor belt 21 and a test platform 22 disposed on the conveyor belt 21, and the tool 11 is connected to the test platform 22; furthermore, in order to better fix the tool 11, so that the tool is not easy to shake and convenient to measure, a first positioning block 23, a second positioning block 24 and a plurality of screw holes 25 are arranged on the test platform 22, the first positioning block 23 and the second positioning block 24 are arranged vertically, and two edges of the tool 11 respectively abut against the first positioning block 23 and the second positioning block 24 and are connected in the screw holes 25 through screws so that the tool 11 is fixedly connected on the test platform 22; specifically, the center of the transmission belt 21 is provided with a test platform 22, the side end of the test platform 22 is provided with a first positioning block 23 and a second positioning block 24, and the installation plane of the test platform 22 is provided with a corresponding screw hole 25, when the tool 11 is transmitted to the test platform 22 through the transmission belt 21, the first positioning block 23 and the second positioning block 24 perform positioning in three orthogonal directions through the installation surface of the test platform 22, and then are locked through screws.
Within the present invention, the measuring device 3 comprises a support 31, a tripod 32 and a laser tracker 33, the tripod 32 being connected to the support 31, the laser tracker 33 being connected to the tripod 32; specifically, the laser tracker 33 is mounted on a tripod 32, the tripod 32 is fixed to the support 31, and the support 31 is placed at a central portion on one side of the conveyor belt 21.
In the present invention, after the tested ball hinge is installed, the sliding rod 1363 of the pitch adjusting component 131 is installed to ensure that the transition rod 123 is clamped between the sliding rod 1363 and the fixing rod 1361 of the pitch adjusting component 131, and similarly ensure that the transition rod 123 is clamped between the two rods of the yaw adjusting component 14; firstly, fixing the spin direction of the ball hinge to a certain specific position, then fixing the pitch direction of the ball hinge to a certain specific position, adjusting the deflection direction to reach a plurality of specific positions, and measuring the position coordinates of the center of the target ball 121 once by the laser tracker 33 when each position is reached; after the testing of all the positions in the deflection direction is finished, the pitching direction is adjusted to the next specified direction, and the detection work is repeated until all the positions in the pitching direction are tested; the steps are that aiming at a test cycle of a certain specific spin position, the ball hinge is continuously adjusted to different spin positions, the test cycle is repeated, and the test of the ball center position of the target ball 121 at all spin positions of the ball hinge is completed; after the test is completed, the coordinates of the centers of the target spheres 121 are fitted to form a spherical surface, and then the root mean square value between the coordinates of the centers of the target spheres 121 and the fitted spherical surface is calculated, which is the precision value of the spherical hinge.
The invention has simple structure, convenient installation, high automation degree and high test efficiency; the invention also has the characteristic of solidification and uniformity of the test sampling points, avoids test errors caused by different test positions and has high test precision. In addition, the invention also has universality, is suitable for online precision detection of ball hinges of different specifications and models, and is particularly suitable for manufacturers producing the ball hinges in batch.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The ball hinge online precision detection equipment is characterized by comprising a placing device for placing a ball hinge, a transmission device for driving the placing device to move and a measuring device for measuring the position of the ball hinge; the placing device comprises a tool, a ball hinge mechanism to be tested, a pitching adjusting mechanism and a self-rotating adjusting mechanism, wherein the ball hinge mechanism to be tested is used for placing the ball hinge on the tool, the pitching adjusting mechanism is used for controlling and adjusting the position of the ball hinge in the pitching direction, and the self-rotating adjusting mechanism is used for adjusting the position of the ball hinge in the self-rotating direction.
2. The ball hinge on-line accuracy detection device according to claim 1, wherein the pitch adjustment mechanism comprises a pitch adjustment assembly and a yaw adjustment assembly which are arranged perpendicularly to each other and are used for adjusting the position of the ball hinge in the pitch direction.
3. The ball hinge on-line precision detection device of claim 1, wherein the ball hinge mechanism to be detected comprises a target ball seat, a transition rod, a ball hinge rod and a ball hinge seat, the ball hinge seat is connected to the tool, the ball hinge rod is installed on the ball hinge seat, one end of the transition rod is connected with the ball hinge rod, the other end of the transition rod is connected with the target ball seat, and the target ball seat is used for placing a target ball of the ball hinge.
4. The ball hinge on-line precision detection device of claim 2, characterized in that, every single move adjusting subassembly includes every single move motor, every single move shaft coupling, every single move transmission shaft, bearing frame, rocking arm and magnet steel fixing base, every single move motor installs on every single move motor seat, the every single move transmission shaft is installed on the bearing frame, every single move motor pass through the every single move shaft coupling with every single move transmission shaft connects, every single move transmission shaft with rocking arm, magnet steel fixing base are connected, the top of rocking arm is provided with dead lever and spout, swing joint has the slide bar in the spout, the slide bar passes through limit nut to be fixed in the spout, the dead lever with be provided with the clearance between the slide bar, install on the rocking arm and be used for responding to the hall sensor of the angular position of rocking arm.
5. The ball hinge on-line accuracy testing device as claimed in claim 4, wherein said fixed rod is connected to said sliding rod through a spring.
6. The ball hinge on-line accuracy detection device of claim 5, wherein the structure of the yaw adjusting assembly is the same as that of the pitch adjusting assembly.
7. The ball hinge on-line precision detection device of claim 1, wherein the spin adjustment mechanism comprises a spin motor, a spin coupler, a worm wheel and a spin platform, the spin motor is installed on a spin motor base, the worm is installed on a worm support base, the worm wheel is installed on a worm wheel support base, the spin motor passes through the spin coupler and is connected with the worm, the worm is connected with the worm wheel in a meshed manner, the worm wheel is connected with the spin platform, an encoder is connected between the worm wheel and the spin platform, the encoder is used for sensing the rotation position of the spin platform, an interface is arranged on the spin platform, and the interface is connected with the hinge of the ball hinge.
8. The ball hinge on-line precision detection equipment of claim 1, wherein the transmission device comprises a conveyor belt and a test platform arranged on the conveyor belt, and the tool is connected to the test platform.
9. The ball hinge online precision detection device of claim 8, wherein the test platform is provided with a first positioning block, a second positioning block and a plurality of screw holes, the first positioning block and the second positioning block are arranged perpendicular to each other, two edges of the tool respectively abut against the first positioning block and the second positioning block and are connected in the screw holes through screws, so that the tool is fixedly connected to the test platform.
10. The ball hinge on-line precision detection device as claimed in claim 1, wherein the measuring device comprises a support, a tripod and a laser tracker, the tripod is connected to the support, and the laser tracker is connected to the tripod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884536.7A CN110595359A (en) | 2019-09-19 | 2019-09-19 | Online precision detection equipment for ball hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884536.7A CN110595359A (en) | 2019-09-19 | 2019-09-19 | Online precision detection equipment for ball hinge |
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| CN110595359A true CN110595359A (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910884536.7A Pending CN110595359A (en) | 2019-09-19 | 2019-09-19 | Online precision detection equipment for ball hinge |
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| CN (1) | CN110595359A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113777619A (en) * | 2021-09-15 | 2021-12-10 | 深圳市中图仪器股份有限公司 | Distance measuring device with adjusting base |
| CN115015880A (en) * | 2022-05-30 | 2022-09-06 | 中国科学院合肥物质科学研究院 | Quick adjustable structure suitable for automatic adjustable speculum standard target ball of gesture |
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| CN110174052A (en) * | 2019-05-30 | 2019-08-27 | 中国科学院长春光学精密机械与物理研究所 | A kind of Hooke's hinge method for testing precision |
| CN110174051A (en) * | 2019-05-30 | 2019-08-27 | 中国科学院长春光学精密机械与物理研究所 | A kind of online accuracy detecting device of Hooke's hinge |
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| WO2010053229A1 (en) * | 2008-11-06 | 2010-05-14 | Iucf-Hyu(Industry-University Cooperation Foundation Hanyang University) | Method and system of measuring motion error in precision linear stage |
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| CN113777619A (en) * | 2021-09-15 | 2021-12-10 | 深圳市中图仪器股份有限公司 | Distance measuring device with adjusting base |
| CN113777619B (en) * | 2021-09-15 | 2023-08-22 | 深圳市中图仪器股份有限公司 | Distance measuring device with adjusting base |
| CN115015880A (en) * | 2022-05-30 | 2022-09-06 | 中国科学院合肥物质科学研究院 | Quick adjustable structure suitable for automatic adjustable speculum standard target ball of gesture |
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Application publication date: 20191220 |
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