CN114353829B - High-temperature eccentric high-precision rotary table device - Google Patents
High-temperature eccentric high-precision rotary table device Download PDFInfo
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- CN114353829B CN114353829B CN202111593150.4A CN202111593150A CN114353829B CN 114353829 B CN114353829 B CN 114353829B CN 202111593150 A CN202111593150 A CN 202111593150A CN 114353829 B CN114353829 B CN 114353829B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
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Abstract
The invention discloses a high-temperature eccentric high-precision turntable device, which belongs to the technical field of sensor calibration, when only one sensor product needs to be calibrated, a sensor to be calibrated is fixed on an adapter plate, and a jackscrew on the side surface of a sliding block cylinder on one side without the sensor product is loosened, so that a sliding block can freely slide in the sliding block cylinder; a jackscrew on the side surface of the sliding block barrel on one side of the sensor product is screwed down, so that the sliding block is fixed at the middle position in the sliding block barrel, and the sliding of the sliding block in the sliding block barrel is limited; when the rotating shaft rotates, the sliding block on the other side can generate certain centrifugal force due to the centrifugal action to balance the centrifugal force generated by the product; when a plurality of products need to be calibrated simultaneously, jackscrews on the side faces of the sliding block cylinders on two sides can be loosened, so that balanced centrifugal force is generated and mutually offset, and further the influence of the rotating centrifugal force on the calibration precision of the sensor can be eliminated by adding a centrifugal force self-balancing device consisting of the sliding blocks, the sliding block cylinders and the springs.
Description
Technical Field
The invention relates to the technical field of sensor calibration, in particular to a high-temperature eccentric high-precision rotary table device.
Background
The process of scaling the sensor with a standard instrument is called calibration. In particular to a piezoelectric pressure sensor, a series of processes of generating a standard force with known magnitude by using a special calibration device such as a piston manometer to act on the sensor, outputting a corresponding charge signal by the sensor, measuring the charge signal by using a standard detection device with known precision to obtain the magnitude of the charge signal, and obtaining a set of input-output relations, are calibration processes of the piezoelectric pressure sensor. The three-axis turntable is widely applied to calibration of various direction sensors, and the stability and repeated positioning precision of the structure of the three-axis turntable have decisive influence on the measurement precision of the sensors.
The traditional three-axis turntable adopts bevel gears or worm gears and other mechanisms for transmission, has a complex structure, has very high requirements on the processing precision of structural members and the technical level of assembly workers, and is high in manufacturing cost and maintenance cost and difficult to maintain. At present, the existing three-axis rotary table is manually rotated for calibration, the rotating speed is low, and only static calibration can be carried out. Alloy steel or cast iron is used as a base in the aspect of structure, the precision is greatly influenced by the change of environmental temperature, and no nonmagnetic turntable is arranged at home at present, so that the high-precision calibration of the sensor cannot be realized.
Disclosure of Invention
The invention provides a high-temperature eccentric high-precision turntable device which can avoid the influence of ambient temperature on a base, realize the eccentric calibration of a sensor with high precision, high rotating speed and high temperature, and eliminate the influence of rotating centrifugal force on the calibration precision of the sensor by providing a centrifugal force self-balancing device.
The specific technical scheme provided by the invention is as follows:
the invention provides a high-temperature eccentric high-precision turntable device which comprises a marble base, a calibration table base fixed on the upper surface of the marble base, a sensor calibration device fixed on the calibration table base and a coaxial heat preservation device, wherein the sensor calibration device comprises a first supporting seat, a second supporting seat, a third supporting seat and a fourth supporting seat fixed on the upper surface of the calibration table base, a driving motor fixed on the fourth supporting seat, a rotating shaft connected with an output shaft of the driving motor and a calibration assembly connected with the rotating shaft, the calibration assembly is arranged in the coaxial heat preservation device and comprises a calibration rotating shaft, a connecting seat fixed on the calibration rotating shaft, a fixing seat fixed on the connecting seat, a switching plate fixed on the fixing seat, a sliding block barrel positioned between the connecting seat and the fixing seat, a sliding block and a spring installed in the sliding block barrel, the spring is arranged on the inner wall of the sliding block barrel and two ends of the sliding block, and two ends of the spring are respectively abutted against the inner wall of the sliding block barrel and the sliding block.
Optionally, the sliding block is located in the middle of the sliding block barrel, a screw hole for fixing the sliding block is formed in the middle of the sliding block barrel, and the spring is in a compression state in a static state.
Optionally, the adapter plate includes a first adapter plate and a second adapter plate, the fixing base includes a first fixing base and a second fixing base, the first fixing base and the second fixing base are symmetrically arranged on two sides of the connecting base, the first connecting plate is fixed on the first fixing base, and the second connecting plate is fixed on the second fixing base.
Optionally, the slider barrel, the spring and the slider are a plurality of and are symmetrically arranged on two sides of the connecting seat, a fixing hole for installing a sensor to be tested is formed in the adapter plate, and two ends of the slider barrel are respectively fixed on the connecting seat and the fixing seat.
Optionally, the calibration rotating shaft and the rotating shaft are connected through a coupling, two ends of the calibration rotating shaft are respectively mounted on the first supporting seat and the second supporting seat through bearings, and the coaxial heat preservation device is fixed on the calibration table base through a fixing support.
Optionally, the coaxial heat preservation device includes the adoption the fixed bolster is fixed at the lower shell on demarcating the platform base, adopts upper end and lower end cooperation axle sleeve to install last shell on the shell down, be located the shell down with go up inside lower inner shell and the last inner shell of shell, fix handle on the last shell, wherein, go up the shell with one side of shell adopts the hinge articulated down, go up the shell with adopt the buckle to fix down between the shell.
Optionally, the shaft sleeve is fixed to the lower housing by using a lower end head, the lower end head is fixed to the lower housing by using a screw, the upper end head is fixed to the upper housing by using a screw, and the calibration rotating shaft penetrates through the shaft sleeve.
Optionally, the connecting seat adopts the connecting block to fix mark on the pivot, the bearing adopts the end cover to install respectively first supporting seat, the second supporting seat with on the third supporting seat, the end cover adopts the screw to fix respectively first supporting seat, the second supporting seat with on the third supporting seat.
Optionally, an external transfer shaft is arranged at the left end of the calibration rotating shaft, and a conductive slip ring and a coaxial transfer flange are mounted on the external transfer shaft.
Optionally, the driving motor is fixed on the fourth supporting seat by bolts, the rotating shaft is connected with an output shaft of the driving motor by a transmission shaft connector, and the fixing seat and the connecting seat are fixed by bolts.
The invention has the following beneficial effects:
the embodiment of the invention provides a calibration table base of a high-temperature eccentric high-precision turntable device, which is arranged on marble foundation stones, wherein the marble foundation stones are influenced by environmental temperature to have extremely small deformation, so that the influence of the environmental temperature on the foundation bases is avoided, and the influence of the environmental temperature on the calibration precision of a sensor is reduced; and the jackscrew on the side surface of the sliding block barrel on one side of the sensor product is screwed down, so that the sliding block is fixed at the middle position in the sliding block barrel, and the sliding of the sliding block in the sliding block barrel is limited. When the rotating shaft rotates, the sliding block on the other side can generate certain centrifugal force due to the centrifugal effect to balance the centrifugal force generated by the product. If the product is lighter, the top threads on the side surfaces of some sliding block cylinders on the other side of the product can be screwed, so that the centrifugal force generated by the product can be adjusted, and the centrifugal force generated by the product can be better balanced. When a plurality of products need to be calibrated simultaneously, jackscrews on the side faces of the sliding block cylinders on two sides can be loosened, so that balanced centrifugal force is generated and mutually offset, and further the influence of the rotating centrifugal force on the calibration precision of the sensor can be eliminated by adding a centrifugal force self-balancing device consisting of the sliding blocks, the sliding block cylinders and the springs.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an isometric view of a high-temperature eccentric high-precision turntable device according to an embodiment of the invention;
fig. 2 is another isometric view of a high-temperature eccentric high-precision turntable device according to an embodiment of the present invention;
fig. 3 is a schematic front view of a high-temperature eccentric high-precision turntable device according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structural view of a high-temperature eccentric high-precision turntable device according to an embodiment of the present invention;
FIG. 5 is an enlarged partial view of section I of FIG. 4 according to an embodiment of the present invention;
FIG. 6 is an enlarged partial view of section II of FIG. 5 according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a calibration assembly according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A high-temperature eccentric high-precision turntable device according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 7.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, an embodiment of the present invention provides a high-temperature eccentric high-precision turntable device, which includes a marble base 1, a calibration table base 2 fixed on an upper surface of the marble base 1, a sensor calibration device 4 fixed on the calibration table base 2, and a coaxial thermal insulation device 3, where the sensor calibration device 4 includes a first support seat 5, a second support seat 6, a third support seat 7, and a fourth support seat 8 fixed on the upper surface of the calibration table base 2, a driving motor 9 fixed on the fourth support seat 8, a rotating shaft 10 connected to an output shaft of the driving motor 9, and a calibration assembly 11 connected to the rotating shaft 10, where the calibration assembly 11 is disposed inside the coaxial thermal insulation device 3, the calibration assembly 11 includes a calibration rotating shaft 1101, a connecting seat 1102 fixed on the calibration rotating shaft 1101, a fixing seat 1103 fixed on the connecting seat 1102, an adapter plate 1104 fixed on the fixing seat 1103, a slider cylinder 1105 located between the connecting seat 1103 and the fixing seat 1103, a slider 1106 and a spring 1107 mounted inside the slider 1105 mounted inside the sliding cylinder 1105, an inner cavity of the sliding cylinder 1105 and a connecting position where the slider 1105 and two ends of the slider are connected to the spring 1106, and two ends of the slider are disposed on two ends of the inner wall of the spring 1105, and the slider 1105, and two ends of the slider are disposed on the inner wall of the spring 1107, respectively.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, the slider 1106 is located in the middle of the slider tube 1105, the middle of the slider tube 1105 is provided with a screw hole 1108 for fixing the slider 1106, and the spring 1107 is in a compressed state in a rest state. The sliding block 1106 can be fixed on the sliding block cylinder 1105 by installing the jackscrew into the screw hole 1108, that is, after the sliding block 1106 is fixed by adopting the jackscrew, the sliding block 1106 does not displace relative to the sliding block cylinder 1105 in the process that the calibration component 11 rotates along with the rotating shaft 10; when the sliding block 1106 is not fixed by adopting a jackscrew, the sliding block 1106 can overcome the acting force of a spring to displace relative to the sliding block cylinder 1105 in the process that the calibration component 11 rotates along with the rotating shaft 10; when the calibration component 11 is stationary, the sliding block 1106 is restored to the initial position under the action of the springs at the two ends, so that the balance of the rotating centrifugal force in the calibration process of the sensor can be realized by loosening the corresponding jackscrews as required, and the calibration precision of the sensor is improved.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, the adapter plate 1104 includes a first adapter plate and a second adapter plate, the fixing base 1103 includes a first fixing base and a second fixing base, the first fixing base and the second fixing base are symmetrically disposed on two sides of the connecting base 1102, the first connecting plate is fixed on the first fixing base, and the second connecting plate is fixed on the second fixing base. The slider section of thick bamboo 1105, spring 1107 and slider 1106 are a plurality ofly and the symmetry sets up in the both sides of connecting seat 1102, are provided with the fixed orifices 1109 that are used for installing the sensor that awaits measuring on the keysets 1104, and the both ends of slider section of thick bamboo 1105 are fixed respectively on connecting seat 1102 and fixing base 1103. For example, counter bores for combining may be provided on the connecting seat 1102 and the fixing seat 1103, and then both ends of the slider cylinder 1105 are installed in the counter bores, and after the connecting seat 1102 and the fixing seat 1103 are fixed by bolts, both ends of the slider cylinder 1105 will be fixed on the connecting seat 1102 and the fixing seat 1103, respectively.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, 6 slider barrels 1105, 6 springs 1107 and 6 sliders 1106 may be respectively disposed between the connection seat and the upper fixing seat and between the connection seat and the lower fixing seat, each of the 1 slider barrels 1105, the 1 spring 1107 and the 1 slider 1106 are mutually matched to form a centrifugal force self-balancing device, the 6 centrifugal force self-balancing devices are respectively and symmetrically disposed, and the corresponding jackscrew may be selectively loosened as required to realize the corresponding centrifugal force self-balancing, that is, the centrifugal force self-balancing devices are symmetrically disposed, so that the corresponding centrifugal force self-balancing devices may be opened as required to eliminate the influence of the rotating centrifugal force on the calibration accuracy of the sensor, thereby further improving the calibration accuracy of the sensor.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, a calibration rotating shaft 1101 is connected to a rotating shaft 10 by a coupling 1110, two ends of the calibration rotating shaft 1101 are respectively installed on a first supporting seat 5 and a second supporting seat 6 by bearings 1112, and a coaxial thermal insulation device 3 is fixed on a calibration table base 2 by a fixing support 12. The coaxial heat preservation device 3 comprises a lower outer shell 301 fixed on a base of the calibration table by a fixing bracket 12, an upper outer shell 305 mounted on the lower outer shell 301 by an upper end 302 and a lower end 303 matched with a shaft sleeve 304, a lower inner shell 306 and an upper inner shell 307 positioned inside the lower outer shell 301 and the upper outer shell 305, and a lifting handle 308 fixed on the upper outer shell 305, wherein one sides of the upper outer shell 305 and the lower outer shell 301 are hinged by hinges, the upper outer shell 305 and the lower outer shell 301 are fixed by a buckle 309, and the upper outer shell 305 can rotate relative to the lower outer shell 301 by the lifting handle 308 after the buckle 309 is released, so that the coaxial heat preservation device 3 is opened and closed.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, a shaft sleeve 304 is fixed on a lower casing 301 by a lower end 303, the lower end 303 is fixed on the lower casing 301 by screws, an upper end 302 is fixed on an upper casing 305 by screws, and a calibration rotating shaft 1101 passes through the shaft sleeve 304 and is installed. The adoption top end, the mounting means of lower extreme head cooperation axle sleeve both can realize demarcating the heat preservation of subassembly 11, have simultaneously can not influence to demarcate subassembly 11 and rotate along with pivot 10, do not influence opening and shutting of coaxial heat preservation device 3 yet.
In an example, the lower inner shell 306 and the upper inner shell 307 are provided with heat flow holes, and the outer surfaces of the lower inner shell 306 and the upper inner shell 307 are provided with non-metal heating tapes, so that heat generated by the heating tapes of the coaxial heat preservation device 3 can be conducted to a sensor to be calibrated, and the non-metal heating tapes do not generate magnetic field interference to influence the calibration accuracy of the sensor.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, the connection seat 1102 is fixed on the calibration rotation shaft 1101 by a connection block 1113, the bearing 1112 is respectively installed on the first support seat 5, the second support seat 6 and the third support seat 7 by an end cover 1111, and the end cover 1111 is respectively fixed on the first support seat 5, the second support seat 6 and the third support seat 7 by screws.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, an outer adapter shaft 13 is disposed at the left end of the calibration rotating shaft 1101, and a conductive slip ring 14 and a coaxial adapter flange 15 are mounted on the outer adapter shaft 13. The driving motor 9 is fixed on the fourth supporting seat 8 by bolts, the rotating shaft 10 is connected with an output shaft of the driving motor 9 by a transmission shaft connector 16, and the fixed seat 1103 and the connecting seat 1102 are fixed by bolts.
The embodiment of the invention provides a calibration table base of a high-temperature eccentric high-precision turntable device, which is arranged on marble foundation stones, wherein the marble foundation stones are influenced by environmental temperature to have extremely small deformation, so that the influence of the environmental temperature on the foundation bases is avoided, and the influence of the environmental temperature on the calibration precision of a sensor is reduced; and the jackscrew on the side surface of the sliding block barrel on one side of the sensor product is screwed down, so that the sliding block is fixed at the middle position in the sliding block barrel, and the sliding of the sliding block in the sliding block barrel is limited. When the rotating shaft rotates, the sliding block on the other side can generate certain centrifugal force due to the centrifugal effect to balance the centrifugal force generated by the product. If the product is lighter, the top threads on the side surfaces of some sliding block cylinders on the other side of the product can be screwed, so that the centrifugal force generated by the product can be adjusted, and the centrifugal force generated by the product can be better balanced. When a plurality of products need to be calibrated simultaneously, jackscrews on the side surfaces of all the slide block cylinders on two sides can be loosened, so that balanced centrifugal force is generated and mutually offset, and further the influence of the rotating centrifugal force on the calibration precision of the sensor can be eliminated by adding a centrifugal force self-balancing device consisting of the slide blocks, the slide block cylinders and the springs.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (9)
1. A high-temperature eccentric high-precision rotary table device is characterized by comprising a marble base, a calibration table base fixed on the upper surface of the marble base, a sensor calibration device fixed on the calibration table base and a coaxial heat preservation device, wherein the sensor calibration device comprises a first supporting seat, a second supporting seat, a third supporting seat and a fourth supporting seat fixed on the upper surface of the calibration table base, a driving motor fixed on the fourth supporting seat, a rotating shaft connected with an output shaft of the driving motor and a calibration assembly connected with the rotating shaft, the calibration assembly is arranged inside the coaxial heat preservation device and comprises a calibration rotating shaft, a connecting seat fixed on the calibration rotating shaft, a fixing seat fixed on the connecting seat, an adapter plate fixed on the fixing seat, a sliding block cylinder positioned between the connecting seat and the fixing seat, a sliding block and a spring installed inside the sliding block cylinder, the springs are arranged on the inner wall of the sliding block cylinder and two ends of the sliding block, and two ends of the spring are respectively abutted against the inner wall of the sliding block cylinder and the sliding block; the sliding block is positioned in the middle of the sliding block barrel, a screw hole for fixing the sliding block is formed in the middle of the sliding block barrel, and the spring is in a compressed state in a static state; the sliding block is fixed on the sliding block barrel by installing a jackscrew in the screw hole, wherein after the sliding block is fixed by adopting the jackscrew, the sliding block cannot displace relative to the sliding block barrel in the process that the calibration assembly rotates along with the rotating shaft; when the sliding block is not fixed by adopting a jackscrew, the sliding block can overcome the acting force of a spring to displace relative to the sliding block barrel in the process that the calibration assembly rotates along with the rotating shaft; when the calibration assembly is static, the sliding block is restored to the initial position under the action of the springs at the two ends, and then the balance of the rotating centrifugal force in the calibration process of the sensor is realized by loosening the corresponding jackscrews according to the requirement; set up respectively between connecting seat and last fixing base and connecting seat and lower fixing base 6 slider section of thick bamboo, 12 spring and 6 the slider, every 1 slider section of thick bamboo, 2 the spring and 1 the slider is mutually supported and is constituteed a centrifugal force self-balancing unit, realizes selecting to loosen corresponding jackscrew as required through respectively the symmetry and realizes corresponding centrifugal force self-balancing by setting up 6 centrifugal force self-balancing units.
2. A high-temperature eccentric high-precision rotary table device according to claim 1, wherein the adapter plate comprises a first adapter plate and a second adapter plate, the fixing seats comprise a first fixing seat and a second fixing seat, the first fixing seat and the second fixing seat are symmetrically arranged on two sides of the connecting seat, the first adapter plate is fixed on the first fixing seat, and the second adapter plate is fixed on the second fixing seat.
3. A high-temperature eccentric high-precision rotary table device according to claim 1 or 2, wherein the plurality of slide block cylinders, the plurality of springs and the plurality of slide blocks are symmetrically arranged on two sides of the connecting seat, the adapter plate is provided with a fixing hole for mounting a sensor to be tested, and two ends of each slide block cylinder are respectively fixed on the connecting seat and the fixing seat.
4. A high-temperature eccentric high-precision rotary table device according to claim 1, wherein the calibration rotary shaft and the rotary shaft are connected by a coupling, two ends of the calibration rotary shaft are respectively mounted on the first supporting seat and the second supporting seat by bearings, and the coaxial heat preservation device is fixed on the calibration table base by a fixing support.
5. A high-temperature eccentric high-precision rotary table device according to claim 4, wherein the coaxial heat preservation device comprises a lower outer shell fixed on the base of the calibration table by the fixing support, an upper outer shell mounted on the lower outer shell by matching an upper end and a lower end with a shaft sleeve, a lower inner shell and an upper inner shell positioned inside the lower outer shell and the upper outer shell, and a handle fixed on the upper outer shell, wherein one side of the upper outer shell and one side of the lower outer shell are hinged by hinges, and the upper outer shell and the lower outer shell are fixed by buckles.
6. A high-temperature eccentric high-precision rotary table device according to claim 5, wherein the shaft sleeve is fixed on the lower shell by a lower end head, the lower end head is fixed on the lower shell by a screw, the upper end head is fixed on the upper shell by a screw, and the calibration rotary shaft penetrates through the shaft sleeve.
7. A high-temperature eccentric high-precision rotary table device according to claim 5, wherein the connecting base is fixed on the calibration rotary shaft by a connecting block, the bearing is respectively mounted on the first supporting base, the second supporting base and the third supporting base by end covers, and the end covers are respectively fixed on the first supporting base, the second supporting base and the third supporting base by screws.
8. A high-temperature eccentric high-precision rotary table device according to claim 7, wherein an external adapter shaft is arranged at the left end of the calibration rotary shaft, and a conductive slip ring and a coaxial adapter flange are mounted on the external adapter shaft.
9. A high-temperature eccentric high-precision rotary table device according to claim 8, wherein the driving motor is fixed on the fourth supporting seat by bolts, the rotating shaft is connected with an output shaft of the driving motor by a transmission shaft connector, and the fixed seat and the connecting seat are fixed by bolts.
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| CN202111593150.4A CN114353829B (en) | 2021-12-23 | 2021-12-23 | High-temperature eccentric high-precision rotary table device |
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| CN202111593150.4A CN114353829B (en) | 2021-12-23 | 2021-12-23 | High-temperature eccentric high-precision rotary table device |
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| CN114353829A CN114353829A (en) | 2022-04-15 |
| CN114353829B true CN114353829B (en) | 2023-03-24 |
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