CN212399487U - Fluted disc graduation test revolving stage device - Google Patents
Fluted disc graduation test revolving stage device Download PDFInfo
- Publication number
- CN212399487U CN212399487U CN202020620717.7U CN202020620717U CN212399487U CN 212399487 U CN212399487 U CN 212399487U CN 202020620717 U CN202020620717 U CN 202020620717U CN 212399487 U CN212399487 U CN 212399487U
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- servo motor
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- 238000009434 installation Methods 0.000 claims description 9
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- 239000010959 steel Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
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- 230000001133 acceleration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
A fluted disc indexing test turntable device is characterized in that an upper bearing assembly is mounted on an upper base, a lower bearing assembly is mounted on a lower base, a main shaft is mounted on the upper bearing assembly and the lower bearing assembly, a table top, a guide block, a fixed fluted disc, a movable fluted disc, a permanent magnet direct current torque motor and a coder are sequentially mounted on the main shaft from top to bottom, the fixed fluted disc is connected with a servo motor by virtue of the guide block, an eccentric shaft is mounted in a bearing end cover, and a large gear, two sets of small bearings and a set of deep groove ball bearings are mounted on the eccentric shaft; one side of the annular lever is connected with the fluted disc sliding block through an adjusting screw rod, the middle part of the annular lever is fixedly connected with the guide block, and the other side of the annular lever is connected with the fluted disc lifting support through an adjusting assembly; the fluted disc is meshed and disconnected by controlling the movement of the servo motor, the photoelectric switch is used as a state generator for judging whether the fluted disc is meshed in place, and the final positioning of the shafting angle is completed by the fluted disc meshing on the basis of realizing the high-precision positioning function of the traditional shafting.
Description
Technical Field
The utility model relates to a fluted disc graduation test revolving stage device.
Background
The rotary table is a basic platform for a measurement and control system element calibration test, the position, the speed and the acceleration of the rotary table are controllable, and main products to be measured comprise an inertial measurement unit, a transposition mechanism, a loading table and the like.
In the field of turntables, a high-precision rotary shaft system is an important component, a traditional high-precision rotary shaft system is generally directly supported by a precision mechanical bearing, a permanent magnet direct current torque motor is directly driven, a high-precision angle encoder is used as an angle measurement and feedback element, a system generally adopts a multi-loop subordinate structure control mode consisting of a current loop and a position loop control loop, the input of a motor driver is controlled through a D/A conversion card, and the motor driver drives a motor to realize the control of the motor; through the mode, although the equipment has high positioning accuracy, the control system is generally closed loop, the rotary shaft system is influenced by self and external environment, micro-jitter exists after the rotary shaft system is positioned for a long time, and the micro-jitter is absolutely not allowed for tested products such as an inertial measurement unit, a transposition mechanism, a dial and the like, so that a high-accuracy rotary table which has high positioning accuracy and can make the shaft system absolutely static after the shaft system is rotated to a set position is urgently needed at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a fluted disc graduation test revolving stage device to solve the problem in the above-mentioned background art.
The utility model provides a technical problem adopt following technical scheme to realize:
a rotary table device for testing the indexing degree of a fluted disc comprises a permanent-magnet direct-current torque motor, a main shaft, an encoder, a movable fluted disc, an upper base, a lower base, a fixed fluted disc, a guide block, an annular lever, a fluted disc lifting support, a guide seat, an adjusting component, a servo motor, a pinion, a gearwheel, an eccentric shaft, a fluted disc sliding support, a fluted disc sliding block, a sliding seat and a table board, wherein the upper base and the lower base form a mounting carrier of a rotary shaft system of the high-precision fluted disc indexing testing rotary table, an upper bearing component is mounted on the upper base, a lower bearing component is mounted on the lower base, the main shaft is mounted on the upper bearing component and the lower bearing component, the table board, the guide block, the fixed fluted disc, the movable fluted disc, the permanent-magnet direct-current torque motor and the encoder are sequentially mounted on the main shaft from top, the guide block moves along the axial direction through precise control, and finally the fixed fluted disc moves axially to complete the engagement and disconnection between the fluted discs;
the servo motor is arranged on a servo motor base, a photoelectric switch is also arranged on the servo motor base and is used as a state generator of the whole system, and the meshing degree of the movable fluted disc and the fixed fluted disc is judged by triggering the photoelectric switch; the servo motor is connected with the small gear, the small gear is meshed with the large gear, the small gear is driven to rotate when the servo motor moves, the large gear is further driven to rotate, the guide seat is connected with the upper base, the sliding retainer is arranged between the guide seat and the guide block, a steel ball is arranged in the middle of the sliding retainer, and the guide block axially moves along the track direction of the guide seat by means of the steel ball and the sliding retainer under the driving of external force;
an eccentric shaft is arranged in a bearing end cover, a large gear, two sets of small bearings and a set of deep groove ball bearings are arranged on the eccentric shaft, a photoelectric disc for triggering a photoelectric switch is arranged on the large gear, one set of small bearing installation carriers are fluted disc sliding supports and are tightly pressed through the large gear, the installation carriers of the fluted disc sliding supports are sliding seats, the installation carriers of the other set of small bearings are sliding seats, the sliding seats are arranged on an upper base, the outer rings of the deep groove ball bearings are connected with fluted disc sliding blocks in a matched mode, when the eccentric shaft rotates around an axis, the deep groove ball bearings can drive the fluted disc sliding blocks to linearly move back and forth along the sliding seats, and when the fluted disc sliding blocks move back and forth, the fluted disc;
one side of the annular lever is connected with the fluted disc sliding block through an adjusting screw rod, the middle part of the annular lever is fixedly connected with the guide block, and the other side of the annular lever is connected with the fluted disc lifting support through an adjusting assembly.
The utility model discloses in, the regulation lower margin is installed to lower base bottom, supplies the revolving stage leveling to use.
The utility model discloses in, install cab apron and dust cover on the main shaft between mesa and guide block in proper order, the servo motor seat is installed on the dust cover.
The utility model discloses in, the fixed tooth dish is connected with the main shaft clearance fit.
In the present invention, a gap is left between the movable toothed disc and the fixed toothed disc for engagement and disengagement of the fixed toothed disc and the movable toothed disc.
The utility model discloses in, the servo motor installs the motor housing outward.
The utility model discloses in, round pin axle and guide block fixed connection are passed through at annular lever middle part.
The utility model discloses in, the adjustment subassembly includes adjusting screw, ejector pin, spring clamp and spring, and adjusting screw one end is installed on fluted disc lifting support, and the adjusting screw other end and ejector pin contact, spring suit are on the ejector pin to be provided with the spring clamp who is used for withstanding the spring bottom the ejector pin.
When the high-precision fluted disc indexing test turntable is used, the high-precision fluted disc indexing test turntable is firstly assembled, and after a revolving shaft of the high-precision fluted disc indexing test turntable is tied to a proper position, final positioning is carried out through fluted disc meshing; then the load is arranged on the table top;
the turntable is directly driven by a permanent magnet direct current torque motor, the whole rotary shafting main shaft is positioned to a set angle position, the permanent magnet direct current torque motor is in a locked-rotor state at the moment, the servo motor starts to work, the pinion rotates along with the servo motor to drive the bull gear to rotate, then the eccentric shaft rotates continuously, the fluted disc sliding block moves along the axis direction of the main shaft under the drive of the eccentric shaft, the annular lever is driven to move downwards along the shafting rotary axis by virtue of the adjusting screw rod under the action of the fluted disc sliding block, the annular lever compresses the spring through the adjusting screw rod, the spring pressing plate props against the spring, the annular lever drives the guide block to move downwards along with the fixed fluted disc, at the moment, after the fixed fluted disc and the movable fluted disc are meshed in place, the photoelectric disc triggers the photoelectric switch to send a signal to the servo motor, the servo motor is, the final positioning of the high-precision fluted disc indexing test turntable is completed, the permanent magnet direct current torque motor is powered off, and the shafting can be absolutely static;
the permanent magnet direct current torque motor is electrified and is in a locked-rotor state, the servo motor is powered off by sending a power-off command to the servo motor, the annular lever moves upwards along the high-precision fluted disc indexing test turntable shaft system under the action of the spring, the annular lever drives the fixed fluted disc and the guide block to move upwards along the main shaft direction together, and at the moment, the movable fluted disc is disconnected from the fixed fluted disc and is not in a meshing state;
and giving another angular position, and repeating the steps to complete the positioning of the other angular position of the high-precision fluted disc indexing test turntable.
Has the advantages that: the utility model discloses a precision machinery bearing support, permanent magnetism direct current torque motor direct drive, high accuracy import angle encoder is as angle measurement and feedback element, adopt the electric current ring simultaneously, the multicircuit dependent structure control mode that position loop control circuit constitutes, and increase there is one set of fluted disc indexing mechanism, fluted disc indexing mechanism drive element is servo motor, realize the meshing and the disconnection of fluted disc through controlling servo motor motion, whether mesh the state generator that targets in place as the fluted disc by photoelectric switch, thereby realize the components of a whole that can function independently integrated configuration of traditional shafting and fluted disc graduation, accomplish final location to the shafting angle through the fluted disc meshing on realizing applying traditional shafting high accuracy locate function basis, overall design scientific and reasonable, and is simple in operation, and convenient, and flexible, and fast.
Drawings
Fig. 1 is a front cross-sectional view of a preferred embodiment of the present invention.
Fig. 2 is a rear sectional view of the preferred embodiment of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1-2, a fluted disc indexing test turntable device comprises an upper bearing assembly 1, a lower bearing assembly 2, a permanent magnet direct current torque motor 3, a main shaft 4, an encoder 5, a movable fluted disc 6, a transition plate 7, an upper base 8, a lower base 9, a dust cover 10, an adjusting foot 11, a fixed fluted disc 12, a guide block 13, a pin shaft 14, an annular lever 15, an adjusting screw 16, a fluted disc lifting support 17, a guide base 18, an adjusting screw 19, a mandril 20, a spring pressing plate 21, a spring 22, a sliding retainer 23, a steel ball 24, an end cover 25, a servo motor base 26, a servo motor 27, a pinion 28, a large gear 29, an eccentric shaft 30, a fluted disc sliding support 31, a small bearing 32, a deep groove ball bearing 33, a fluted disc sliding block 34, a sliding base 35, a photoelectric disc 36, a photoelectric switch 37, a bearing end cover 38, a motor housing 39 and a table top 40, wherein the upper base 8 and the lower base 9 form an, the upper bearing assembly 1 is arranged on an upper base 8, the lower bearing assembly 2 is arranged on a lower base 9, the bottom of the lower base 9 is provided with an adjusting foot margin 11 for the leveling of a rotary table, the main shaft 4 is arranged on the upper bearing assembly 1 and the lower bearing assembly 2, the main shaft 4 is sequentially provided with a table board 40, a transition plate 7, a dust cover 10, a guide block 13, a fixed fluted disc 12, a movable fluted disc 6, a permanent magnet direct current torque motor 3 and an encoder 5 from top to bottom, the movable fluted disc 6 is connected with the main shaft 4 through screws, the fixed fluted disc 12 is in clearance fit connection with the main shaft 4, and a clearance is reserved between the movable fluted disc 6 and the fixed fluted disc 12 so as to realize the meshing and the disconnection of the fixed; the guide block 13 is used as a transition structural member for driving the fixed-toothed disc 12 and is connected with the fixed-toothed disc 12 through a screw, the guide block 13 is used for enabling the fixed-toothed disc 12 to be connected with the servo motor 27, the servo motor 27 is a driving force source for the up-and-down movement of the fixed-toothed disc 12, the guide block 13 is axially moved through precise control, and finally the fixed-toothed disc 12 is axially moved to complete the engagement and disconnection between the toothed discs;
the servo motor 27 is installed on the servo motor base 26 through screws, the servo motor base 26 is installed on the dust cover 10, 2 photoelectric switches 37 are further installed on the servo motor base 26 and used as state generators of the whole system, and the meshing degree of the movable fluted disc 6 and the fixed fluted disc 12 is judged by triggering the photoelectric switches 37; the servo motor 27 is connected with a small gear 28, when the servo motor 27 moves, the small gear 28 is driven to rotate, and then a large gear 29 is driven to rotate, the large gear 29 and the small gear 28 are meshed with each other, the guide seat 18 is connected with the upper base 8 through a screw, 4 sliding retainers 23 are arranged between the guide seat 18 and the guide block 13, a steel ball 24 is arranged in the middle of each sliding retainer 23, and under the driving of external force, the guide block 13 axially moves along the track direction of the guide seat 18 through the steel ball 24 and the sliding retainers 23; a motor cover 39 is arranged outside the servo motor 27;
an eccentric shaft 30 is installed in a bearing end cover 38, a large gear 29, a small bearing 32, a deep groove ball bearing 33 and a small bearing 32 are sequentially installed on the eccentric shaft 30, a photoelectric disc 36 for triggering a photoelectric switch 37 is installed on the large gear 29, one set of small bearing 32 installation carrier is a fluted disc sliding support 31 and is tightly pressed through the large gear 29, the installation carrier of the fluted disc sliding support 31 is a sliding seat 35, the installation carrier of the other set of small bearing 32 is a sliding seat 35, the sliding seat 35 is installed on an upper base 8, the outer ring of the deep groove ball bearing 33 is connected with a fluted disc sliding block 34 in a matching mode, when the eccentric shaft 30 rotates around an axis, the deep groove ball bearing 33 can drive the fluted disc sliding block 34 to linearly move back and forth along the sliding seat 35, and when the fluted disc sliding block 34 moves back and forth, the fluted disc sliding block;
one side of the annular lever 15 is connected with a fluted disc sliding block 34 through an adjusting screw rod 16, the middle part of the annular lever 15 is fixedly connected with a guide block 13 through a pin shaft 14, the other side of the annular lever 15 is fixedly connected with the annular lever 15 through an adjusting screw 19, a spring 22, a fluted disc lifting support 17 and an ejector rod 20, one end of the adjusting screw 19 is installed on the fluted disc lifting support 17, the other end of the adjusting screw 19 is contacted with the ejector rod 20, the spring 22 is sleeved on the ejector rod 20, a spring pressing plate 21 for propping against the spring 22 is arranged at the bottom of the ejector rod 20, the adjusting screw 19 is well adjusted before the high-precision fluted disc indexing test turntable works, and the ejector rod 20 moves along with the movement; the end cover 25 is arranged on one side of the annular lever 15;
and a motor housing 39 is installed outside the servo motor 27.
In the embodiment, when the spindle is used, firstly, the upper bearing assembly 1 and the lower bearing assembly 2 are respectively connected with the spindle 4, then the spindle 4 is installed on the upper base 8 and the lower base 9, the spindle 4 is sequentially provided with the table top 40, the transition plate 7, the dust cover 10, the guide block 13, the fixed gear disc 12, the movable gear disc 6, the upper bearing assembly 1, the permanent magnet direct current torque motor 6, the lower bearing assembly 2 and the encoder 5 from top to bottom, a gap is reserved between the movable gear disc 6 and the fixed gear disc 12, the movable gear disc 6 cannot move in the axial direction of the spindle 4, and the fixed gear disc 12 moves up and down in the axial direction of the spindle 4 under the action of external force, so that the engagement and the disengagement of the fixed; a servo motor 27 is used as a driving force source for the up-and-down movement of a fixed fluted disc 12 and is arranged on a servo motor base 26 through a screw, 2 photoelectric switches 37 are arranged on the servo motor base 26, when a movable fluted disc 6 and the fixed fluted disc 12 are meshed in place, the photoelectric switches 37 are triggered by a photoelectric disc 36 arranged on a large gear 29, so that the servo motor 27 changes the working state to locked rotation to keep the movable fluted disc 6 meshed with the fixed fluted disc 12, the large gear 29 is arranged on an eccentric shaft 30, the eccentric shaft 30 rotates through two sets of small bearings 32 and a set of deep groove ball bearings 33, one set of small bearings 32 is connected with a fluted disc sliding support 31, the other set of small bearings is connected with a sliding seat 35, a middle deep groove ball bearing 33 is connected with a fluted disc sliding block 34, when the eccentric shaft 30 rotates, the fluted disc sliding block 34 moves up and down along the sliding seat, The mandril 20 and the spring 22 are connected with the fluted disc slide block 34 and the fluted disc lifting support 17, under the action of external force, the annular lever 15 can move along the axial direction of the main shaft 4, the guide block 13 is rigidly connected with the annular lever 15 through the pin shaft 14, the guide block 13 is fixed on the fluted disc 12, and the guide block 13 moves along the track direction of the guide seat 18 by utilizing the sliding retainer 23 and the steel ball 24, so that the movement of the annular lever 15 can be converted into the axial movement of the fluted disc 12, and the final meshing and disconnection of the fluted disc 12 and the movable fluted disc 6 are completed;
after the rotating shaft is tied to the position, final positioning is carried out through fluted disc meshing;
finely adjusting the anchor feet 11 to finish the leveling of the table top 40 of the turntable, and then installing a load on the table top 40;
the rotary table is directly driven by a permanent magnet direct current torque motor 3, an encoder 5 is used as an angle measurement and feedback element, a system adopts a multi-loop subordinate structure control mode consisting of a current loop and a position loop control loop, a whole rotary shaft system main shaft 4 is positioned to a set angle position, the permanent magnet direct current torque motor 3 is in a locked-rotor state at the time, a servo motor 27 starts to work, a pinion 28 rotates along with the servo motor 27 to drive a bull gear 29 to rotate, then an eccentric shaft 30 rotates continuously, a fluted disc sliding block 34 moves along the axial direction of the main shaft 4 under the driving of the eccentric shaft 30, an annular lever 15 is driven by an adjusting screw 16 to move downwards along the rotary axis of the shaft system under the action of the fluted disc sliding block 34, the annular lever 15 compresses a spring 22 through an adjusting screw 19, a spring pressing plate 21 supports the spring 22, and the annular lever 15 drives a, at this time, after the fixed fluted disc 12 and the movable fluted disc 6 are meshed in place, the photoelectric disc 36 triggers the photoelectric switch 37 to send a signal to the servo motor 27, the servo motor 27 is switched to a locked-rotor state, the fixed fluted disc 12 and the movable fluted disc 6 are kept in a meshed state to complete the final positioning of the high-precision fluted disc indexing test turntable, the permanent magnet direct current torque motor 3 is powered off, and a shafting can be absolutely static;
the permanent magnet direct current torque motor 3 is powered on, the permanent magnet direct current torque motor 3 is in a locked-rotor state, the servo motor 27 is powered off by sending a power-off instruction to the servo motor 27, the annular lever 15 moves upwards along the high-precision fluted disc indexing test turntable shaft under the action of the spring 22, the annular lever 15 drives the fixed fluted disc 12 and the guide block 13 to move upwards along the direction of the main shaft 4, and at the moment, the movable fluted disc 6 is disconnected from the fixed fluted disc 12 and is not in a meshing state;
and giving another angular position, and repeating the steps to complete the positioning of the other angular position of the high-precision fluted disc indexing test turntable.
Claims (6)
1. A fluted disc indexing test turntable device comprises a permanent magnet direct current torque motor (3), a main shaft (4), an encoder (5), a movable fluted disc (6), an upper base (8), a lower base (9), a fixed fluted disc (12), a guide block (13), an annular lever (15), a fluted disc lifting support (17), a guide base (18), an adjusting component, a servo motor (27), a pinion (28), a gearwheel (29), an eccentric shaft (30), a fluted disc sliding support (31), a fluted disc sliding block (34), a sliding seat (35) and a table top (40), and is characterized in that the upper base (8) and the lower base (9) form a high-precision fluted disc indexing test turntable rotary shaft system mounting carrier, an upper bearing component (1) is mounted on the upper base (8), a lower bearing component (2) is mounted on the lower base (9), the main shaft (4) is mounted on the upper bearing component (1) and the lower bearing component (2), a table board (40), a guide block (13), a fixed fluted disc (12), a movable fluted disc (6), a permanent magnet direct-current torque motor (3) and an encoder (5) are sequentially arranged on the main shaft (4) from top to bottom, and the fixed fluted disc (12) is connected with the servo motor (27) by virtue of the guide block (13);
the servo motor (27) is arranged on a servo motor base (26), a photoelectric switch (37) is further arranged on the servo motor base (26), the servo motor (27) is connected with a small gear (28), the small gear (28) is meshed with a large gear (29), the small gear (28) is driven to rotate when the servo motor (27) moves, the large gear (29) is further driven to rotate, the guide base (18) is connected with the upper base (8), a sliding retainer (23) is arranged between the guide base (18) and the guide block (13), a steel ball (24) is arranged in the middle of the sliding retainer (23), and under the driving of external force, the guide block (13) and the sliding retainer (23) axially move along the track direction of the guide base (18) by means of the steel ball (24);
an eccentric shaft (30) is installed in a bearing end cover (38), a large gear (29), two sets of small bearings (32) and a set of deep groove ball bearings (33) are installed on the eccentric shaft (30), a photoelectric disc (36) for triggering a photoelectric switch (37) is installed on the large gear (29), a set of small bearing (32) installation carrier is a fluted disc sliding support (31) and is pressed tightly through the large gear (29), an installation carrier of the fluted disc sliding support (31) is a sliding seat (35), an installation carrier of the other set of small bearing (32) is a sliding seat (35), the sliding seat (35) is installed on an upper base (8), the outer ring of the deep groove ball bearing (33) is connected with the fluted disc sliding block (34) in a matching mode, when the eccentric shaft (30) rotates around an axis, the deep groove ball bearings (33) can drive the fluted disc (6) sliding block to linearly move back and forth along the sliding seat (35), and forth when the, the fluted disc slide block (34) controls the fixed fluted disc (12) to be meshed with the movable fluted disc (6) through the annular lever (15);
one side of the annular lever (15) is connected with the fluted disc sliding block (34) through the adjusting screw rod (16), the middle part of the annular lever (15) is fixedly connected with the guide block (13), and the other side of the annular lever (15) is connected with the fluted disc lifting support (17) through the adjusting assembly.
2. A toothed disc indexing test turntable device according to claim 1, wherein the lower base (9) is provided at its bottom with adjustment feet (11).
3. A toothed disc indexing test turntable device according to claim 1, wherein the transition plate (7) and the dust cover (10) are sequentially mounted on the main shaft (4) between the table top (40) and the guide block (13), and the servo motor base (26) is mounted on the dust cover (10).
4. A toothed disc indexing test turret arrangement according to claim 1, wherein a gap is provided between the moving (6) and fixed (12) toothed discs.
5. A toothed disc indexing test turret arrangement according to claim 1, wherein the annular lever (15) is fixedly connected at its centre to the guide block (13) by means of a pin (14).
6. The device of claim 1, wherein the adjusting assembly comprises an adjusting screw (19), a push rod (20), a spring pressing plate (21) and a spring (22), one end of the adjusting screw (19) is mounted on the lifting bracket (17) of the fluted disc, the other end of the adjusting screw (19) is in contact with the push rod (20), the spring (22) is sleeved on the push rod (20), and the spring pressing plate (21) for abutting against the spring (22) is disposed at the bottom of the push rod (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020620717.7U CN212399487U (en) | 2020-04-23 | 2020-04-23 | Fluted disc graduation test revolving stage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020620717.7U CN212399487U (en) | 2020-04-23 | 2020-04-23 | Fluted disc graduation test revolving stage device |
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| Publication Number | Publication Date |
|---|---|
| CN212399487U true CN212399487U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020620717.7U Withdrawn - After Issue CN212399487U (en) | 2020-04-23 | 2020-04-23 | Fluted disc graduation test revolving stage device |
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| CN (1) | CN212399487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111347380A (en) * | 2020-04-23 | 2020-06-30 | 九江精密测试技术研究所 | High-precision fluted disc indexing test rotary table |
-
2020
- 2020-04-23 CN CN202020620717.7U patent/CN212399487U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111347380A (en) * | 2020-04-23 | 2020-06-30 | 九江精密测试技术研究所 | High-precision fluted disc indexing test rotary table |
| CN111347380B (en) * | 2020-04-23 | 2023-11-24 | 九江精密测试技术研究所 | High-precision fluted disc indexing test turntable |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210126 Effective date of abandoning: 20231124 |