CN115290027A - Angle sensor under-wire fixing device - Google Patents

Abstract

The invention provides a linear subscript fixing device for an angle sensor, belonging to the technical field of industrial production; the testing device comprises a fixing base, the top fixedly connected with upper cover plate of fixing base, fixedly connected with is used for supporting the test seat of angle sensor shell on the upper cover plate, the test seat endotheca is equipped with the switching axle that is used for spacing angle sensor pivot, install the locating part that is used for spacing angle sensor pivot between two parties on the switching axle. The invention adopts a high-precision stepping motor as a power source, and accurately rotates to a required angle position to realize multi-point calibration; the vertical assembly is adopted, so that the influence of gravity on the concentricity is reduced to the maximum extent; the mode that adopts four direction elasticity thimbles to compress tightly on eliminating shaft hole fit clearance eliminates the influence that the clearance brought to maring when guaranteeing the concentricity after the assembly, adopts this set of device to demarcate work, can greatly improve the product and demarcate the precision, reduces the product defective rate, improves work efficiency, and is easy and simple to handle easily understandable.

Description

Angle sensor under-wire fixing device

Technical Field

The invention relates to the technical field of industrial production, in particular to an offline calibration device for an angle sensor.

Background

The calibration method of the angle sensor usually adopts an angle measuring instrument which has the same working principle and higher precision by one grade and is coaxially arranged with the angle sensor, the angle measuring instrument rotates by a plurality of accurate angle positions, a special tool is used for programming angle information into a storage unit of the angle sensor, and usually at least 2 parameters need to be programmed in to complete the calibration work.

The programming calibration method of the existing angle sensor generally selects a high-precision angle measuring instrument such as a high-precision code disc as a reference element, a product to be calibrated is coaxially assembled with the code disc serving as the reference on a specific tool, more than two pieces of position information are determined by rotating the code disc, the product is programmed into the angle sensor to be calibrated, the programming work of the angle sensor is realized, the angle sensor and the code disc are required to be concentrically assembled in the calibration process, no gap exists in intermediate transition switching, the rotating angle of the code disc is ensured to be consistent with that of the angle sensor, and therefore the calibration result is accurate.

The existing method adopts horizontal installation, namely a coded disc and an angle sensor are concentrically and horizontally fixed on a device, and shaft holes are fixed by screws. A big disadvantage of horizontal installation is that the shafts including the motor shaft and the sensor may naturally sag due to gravity as a core shaft for ensuring concentricity, and the sagging degree is determined by the respective mass and bearing clearance, so that the sagging of the shafts may cause concentricity deviation. The fixing mode of shaft hole belongs to unilateral and compresses tightly fixedly, causes the shaft hole off-centre easily, influences and marks the precision. And secondly, the angle information of the code disc is read through artificial observation, so that the observation deviation is easy to generate, and the calibration error is brought. Even if adopt the encoder as standard cell, the fixed assembly error that causes of switching will appear again, so prior art means can only satisfy laboratory research, is not suitable for the work of large-scale production batch calibration, consequently, this application provides the fixed device under angle sensor line and satisfies the demand.

Disclosure of Invention

The invention aims to solve the technical problems that the existing angle sensor linear lower fixing device has concentricity deviation, is easy to cause shaft hole eccentricity and influence calibration precision, secondly, the coded disc angle information is easy to generate observation deviation and bring calibration errors through manual observation and reading, and even if an encoder is used as a standard unit, assembly errors caused by switching and fixing occur, so the existing technical means can only meet laboratory research, and the scale is not suitable for batch calibration work in production.

In order to solve the technical problems, the invention provides the following technical scheme:

the device for calibrating the angle sensor under the wire comprises a fixed seat, wherein an upper cover plate is fixedly connected to the top of the fixed seat, a test seat used for supporting an angle sensor shell is fixedly connected to the upper cover plate, a transfer shaft used for limiting an angle sensor rotating shaft is sleeved in the test seat, a positioning part used for centering the angle sensor rotating shaft is installed on the transfer shaft, a quick clamping hand used for matching the test seat to limit the angle sensor shell is installed on the test seat, a stepping motor used for matching the transfer shaft and the positioning part to calibrate the angle sensor rotating shaft is fixedly connected in the fixed seat, and the stepping motor, the transfer shaft and the test seat are coaxial and are vertically arranged; first spacing hole has been seted up at the top of switching axle, first spacing hole is the square hole, it has evenly arranged and has seted up four third through-holes to be the border on the switching axle, the third through-hole with first spacing hole is linked together, positioning element include through the screw thread with third through-hole fixed connection's holding screw, the downthehole slip of third through-hole has been cup jointed and has run through and extend to knock pin in the first spacing hole, the knock pin is kept away from the fixed cover of the one end in first spacing hole has been cup jointed the spring, the spring is kept away from the one end of knock pin with holding screw conflicts.

Preferably, the third through hole is a countersunk hole, a limit stop ring is fixedly sleeved on the top pin, the limit stop ring is abutted against the inner wall of one side of the third through hole, and a chamfer is formed in one end, located in the first limit hole, of the top pin.

Preferably, a first mounting hole is eccentrically formed in the upper cover plate, and the test socket is fixedly connected with the upper cover plate through the first mounting hole.

Preferably, a plurality of first stop collars are fixedly connected to the test seat, and the quick gripper is fixedly connected to the quick gripper through the first stop collars.

Preferably, the test seat is fixedly connected with the first mounting hole through a bolt, the test seat is fixedly connected with the top mounting hole of the stepping motor through a bolt, and the adapter shaft is fixedly connected with the output end of the stepping motor through a bolt.

Preferably, the test seat is provided with a first limit groove matched with the angle sensor shell, the middle part of the test seat is fixedly sleeved with a connecting flange, the connecting flange is fixedly sleeved with the first mounting hole, the bottom of the first limit groove is provided with a first through hole matched with the adapter shaft, the bottom of the test seat is provided with a first matching groove matched with the positioning ring of the stepping motor, and the bottom of the test seat is uniformly distributed and provided with a plurality of process grooves.

Preferably, the top of the transfer shaft is further provided with a second adaptive groove communicated with the first limiting hole.

Preferably, one side of test seat seted up with the second through-hole that first through-hole is linked together, proximity switch has been cup jointed to the second through-hole internal fixation, the switching epaxial set up with the second spacing groove of second through-hole with the axle center, the fixed magnet steel that has cup jointed of second spacing inslot, the top fixed mounting of upper cover plate has data interface, display screen and a plurality of button, fixed mounting has motor driver in the fixing base, motor driver keeps away from one side fixedly connected with control panel of step motor, step motor data interface the button the display screen motor driver control panel electric connection.

Preferably, the bottom of fixing base is a plurality of supporting pads of fixedly connected with of evenly arranging the periphery, the supporting pad is the rubber material.

Preferably, the bottom of the transfer shaft is provided with a yielding groove matched with the output shaft of the stepping motor, and the yielding groove is in clearance fit with the output shaft of the stepping motor.

Compared with the prior art, the invention at least has the following beneficial effects:

in the above scheme, through the coaxial step motor, the adapter shaft and the test seat which are vertically arranged, the influence of gravity on the concentricity of the system can be avoided, the assembly concentricity level is improved, the calibration error of the angle sensor is reduced, and the product reject ratio is reduced.

Contradict through the one end that sets up holding screw to the spring, make the spring promote the knock pin under self elastic action to slide to the one side that is close to first spacing hole along the axial of third through-hole, conflict all around through the knock pin to the square pivot of the angle sensor that awaits measuring, in order to eliminate the shaft hole fit clearance of the angle sensor pivot that awaits measuring and first spacing hole, avoid off-centre, ensure the assembly concentricity requirement, and treat the shell of angle sensor that awaits measuring through the switching axle and carry on spacingly, it is spacing with the top of the angle sensor that awaits measuring with the mode of perpendicular pressfitting fastening through quick tong, traditional fix with screw or chuck fixed mode relatively, can avoid the concentricity error that the fixed mode that causes because screw hole or chuck precision deviation brings by the at utmost, improve and mark the precision.

By arranging the stepping motor as an angle reference source, not only can automatic operation be realized, but also the installation of a code disc or a coder serving as a reference can be saved, the assembly error caused by too many adapter pieces can be reduced, and the calibration precision level is improved.

The upper cover plate on the adapter shaft limits the placement angle of the shell of the angle sensor to be tested, the shell of the angle sensor to be tested is completely limited by matching with the quick clamp, the angle sensor to be tested is prevented from moving in the calibration process, and the upper cover plate, the adapter shaft, the test seat and the upper cover plate are fixed through bolts, simple in structure and convenient to disassemble, assemble and maintain.

Through setting up magnet steel and proximity switch, let step motor rotate with a fixed starting point all the time, can with present according to range scope and required precision predetermine several calibration points, treat that the angular transducer calibration of surveying is regular time through pressing the button operation can, convenient and fast improves staff's calibration rate, is convenient for carry out data observation through the display screen, reduces and reads the parameter error.

Drawings

The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments of the disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.

FIG. 1 is a schematic view of an assembled three-dimensional structure of an off-line calibration device and an angle sensor of the angle sensor;

FIG. 2 is a schematic perspective view of the linear calibration device of the angle sensor;

FIG. 3 is a schematic view of a three-dimensional structure of the linear lower fixing device of the angle sensor after a transfer shaft, a test seat and a quick clamping hand are removed;

FIG. 4 is a schematic view of a first perspective enlarged structure of the test socket;

FIG. 5 is a schematic view of a second perspective enlarged structure of the test socket;

FIG. 6 is an enlarged perspective view of the adapter shaft;

fig. 7 is a schematic view of a cross-sectional enlarged three-dimensional structure of the adapter shaft and the positioning member after assembly.

[ reference numerals ]

1. A fixed seat; 2. a stepping motor; 3. a transfer shaft; 4. magnetic steel; 5. tightening the screw; 6. a spring; 7. a knock pin; 8. a limit stop ring; 9. an upper cover plate; 10. a test seat; 11. a proximity switch; 12. rapidly clamping the hand; 13. a data interface; 14. a button; 15. a display screen; 16. a motor driver; 17. a support pad; 18. a first mounting hole; 19. a first limit groove; 20. a first stop collar; 21. a first through hole; 22. a connecting flange; 23. a second through hole; 24. a first fitting groove; 25. a process tank; 26. a third through hole; 27. a first limiting hole; 28. a second fitting groove; 29. a second limit groove; 30. a positioning member; 31. and (6) withdrawing the groove.

In the present embodiment, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the drawings, which are only needed for illustration and are not intended to limit the present invention to the specific structures, devices and environments, and a person skilled in the art can adjust or modify the devices and environments according to specific needs, and the adjustment or modification is still included in the scope of the appended claims.

Detailed Description

The following describes an angle sensor linear lower fixing device according to the present invention in detail with reference to the accompanying drawings and specific embodiments. Meanwhile, it is described herein that the following embodiments are the best and preferred embodiments for the purpose of making the embodiments more detailed, and may be implemented in other alternative ways by those skilled in the art; also, the drawings are only for purposes of more particularly describing embodiments and are not intended to limit the invention in any way.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

In general, terms may be understood at least in part from the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending at least in part on the context. Additionally, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead allow for the presence of other factors not necessarily explicitly described, depending at least in part on the context.

As used herein, the term "nominal" refers to a desired or target value, and a range of values above and/or below the desired value, of a characteristic or parameter set during a design phase of a production or manufacturing process for a component or process operation. The range of values may be due to slight variations in manufacturing processes or tolerances. As used herein, the term "about" indicates a value of a given amount that may vary based on the particular technology node associated with the subject semiconductor device. The term "about" may indicate a given amount of a value that varies, for example, within 5% -15% of the value (e.g., ± 5%, ± 10% or ± 15% of the value), based on the particular technology node.

It is to be understood that the meaning of "on … …", "over … …" and "over … …" in this disclosure should be interpreted in the broadest manner such that "on … …" means not only "directly on" something "but also includes the meaning of" on "something with intervening features or layers therebetween, and" over … … "or" over … … "means not only" over "or" over "something" but may also include the meaning of "over" or "over" something without intervening features or layers therebetween.

Furthermore, spatially relative terms such as "below …", "below …", "lower", "above …", "upper", and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or feature, as shown in the figures. Spatially relative terms are intended to encompass different orientations in use or operation of the device in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1-3 and fig. 7, an embodiment of the present invention provides an angle sensor linear calibration apparatus, including a fixing base 1, an upper cover plate 9 is fixedly connected to a top of the fixing base 1, a test seat 10 for supporting an angle sensor housing is fixedly connected to the upper cover plate 9, a transfer shaft 3 for limiting an angle sensor rotating shaft is sleeved in the test seat 10, a positioning component 30 for centering the angle sensor rotating shaft is installed on the transfer shaft 3, a quick gripper 12 for cooperating with the test seat 10 to limit the angle sensor housing is installed on the test seat 10, a stepping motor 2 for cooperating with the transfer shaft 3 and the positioning component 30 to calibrate the angle sensor rotating shaft is fixedly connected to the fixing base 1, the stepping motor 2, the transfer shaft 3, and the test seat 10 are coaxially and vertically arranged, the transfer shaft 3 is fixedly connected to an output end of the stepping motor 2, and a design manner of assembling and installing along a vertical horizontal plane can avoid an influence of gravity on concentricity of a system, improve an assembling level, and reduce a calibration error of an angle sensor; first spacing hole 27 has been seted up at the top of switching axle 3, first spacing hole 27 is the square hole, it has evenly arranged and has seted up four third through-holes 26 to be the border on the switching axle 3, third through-hole 26 is linked together with first spacing hole 27, locating part 30 includes holding screw 5 through screw thread and 26 fixed connection of third through-hole, it runs through and extends to the knock pin 7 in the first spacing hole 27 to slide to cup joint in the third through-hole 26, the fixed cover of one end that first spacing hole 27 was kept away from to knock pin 7 has been cup jointed spring 6, the one end that knock pin 7 was kept away from to spring 6 is contradicted with holding screw 5.

Before the calibration, insert the pivot of the angle sensor that awaits measuring in first spacing hole 27, through the conflict effect of holding screw 5 to spring 6 one end, make spring 6 promote knock pin 7 to slide along the axial of third through-hole 26 one side that is close to first spacing hole 27 under self spring action, treat the square pivot of angle sensor that awaits measuring through knock pin 7 and conflict all around, in order to eliminate the shaft hole fit clearance of the angle sensor pivot that awaits measuring and first spacing hole 27, avoid decentering, ensure assembly concentricity requirement, and treat the shell of angle sensor that awaits measuring through switching axle 3 and carry out spacingly, it is spacing to the top of the angle sensor that awaits measuring with the mode of perpendicular pressfitting fastening through quick tong 12, compare traditional fix with screw or chuck fixed mode, can avoid the concentricity error that the fixed mode that causes because screw hole or chuck precision deviation causes by the at utmost, improve and mark the precision.

By arranging the stepping motor 2 as an angle reference source, not only can automatic operation be realized, but also the installation of a code disc or an encoder used as a reference can be saved, the assembly error caused by too many adapter pieces can be reduced, and the calibration precision level is improved.

As shown in fig. 7, in this embodiment, the third through hole 26 is a counter bore, a limit stop ring 8 is fixedly sleeved on the knock pin 7, the limit stop ring 8 is abutted against an inner wall of one side of the third through hole 26, a chamfer is provided at one end of the knock pin 7 located in the first limit hole 27, through cooperation of the limit stop ring 8 and the counter bore, the knock pin 7 is prevented from moving to the first limit hole 27 after being extruded by the elastic force of the spring 6, and further the rotating shaft of the angle sensor to be detected can not be normally inserted into the first limit hole 27, so that calibration of the angle sensor to be detected is affected, the chamfer provided on the knock pin 7 guides the rotating shaft end of the angle sensor to be detected, interference between the end of the knock pin 7 and the rotating shaft end of the angle sensor to be detected is avoided, and the rotating shaft insertion efficiency of the angle sensor to be detected is further improved.

As shown in fig. 1 and fig. 2, in this embodiment, a plurality of first stop collars 20 of fixedly connected with on the test seat 10, quick tong 12 is through first stop collar 20 and quick tong 12 fixed connection, first stop collar 20 can set up to four, be convenient for fix the four corners of quick tong 12, improve the spacing height of quick tong 12 through first stop collar 20, can compress tightly the shell top of the angle sensor that awaits measuring with the end that compresses tightly of guarantee quick tong 12, and then guarantee the angle sensor calibration speed that awaits measuring.

As shown in fig. 3 to 6, in this embodiment, a first mounting hole 18 is eccentrically formed in the upper cover plate 9, the test socket 10 is fixedly connected to the upper cover plate 9 through the first mounting hole 18, and the test socket 10 is fixedly connected to the first mounting hole 18 through a bolt; the test seat 10 is fixedly connected with a mounting hole at the top of the stepping motor 2 through a bolt, the adapter shaft 3 is fixedly connected with the output end of the stepping motor 2 through a bolt, and the top of the adapter shaft 3 is also provided with a second adaptive groove 28 communicated with the first limiting hole 27; the test seat 10 is provided with a first limiting groove 19 matched with the shell of the angle sensor, the middle of the test seat 10 is fixedly sleeved with a connecting flange 22, the connecting flange 22 is fixedly sleeved with a first mounting hole 18, the connecting flange 22 is fixed with the first mounting hole 18 through bolts, namely, the relative position of the test seat 10 and the first mounting hole 18 is fixed, the test seat is simple in structure and convenient to operate, a first through hole 21 matched with the adapting shaft 3 is formed in the bottom of the first limiting groove 19, a first adapting groove 24 matched with the positioning ring of the stepping motor 2 is formed in the bottom of the test seat 10, the positioning ring of the stepping motor 2 is limited through the first adapting groove 24, the mounting speed of the stepping motor 2 and the test seat 10 is improved, a plurality of process grooves 25 are uniformly distributed on the periphery of the bottom of the test seat 10, as an implementation mode of the embodiment, the number of the process grooves 25 can be four, the overall quality of the test seat 10 is reduced, meanwhile, the linear edges of the process grooves 25 can also serve as positioning references around the stepping motor 2, and the mounting speed of the stepping motor 2 and the test seat 10 is further improved.

Treat angle sensor's shell through the upper cover plate 9 on the spiale 3 place the angle and carry on spacingly to the quick tong 12 of cooperation is treated angle sensor's shell and is carried on spacingly completely, avoids angle sensor that awaits measuring to remove at the demarcation in-process, through step motor 2, spiale 3, test seat 10, upper cover plate 9 of bolt fastening, simple structure, the dismouting of being convenient for is maintained.

As shown in fig. 1-4 and fig. 7, in this embodiment, a second through hole 23 communicated with the first through hole 21 is formed in one side of the test socket 10, a proximity switch 11 is fixedly sleeved in the second through hole 23, a second limiting groove 29 coaxial with the second through hole 23 is formed in the adapting shaft 3, a magnetic steel 4 is fixedly sleeved in the second limiting groove 29, a data interface 13, a display screen 15 and a plurality of buttons 14 are fixedly mounted on the top of the upper cover plate 9, a motor driver 16 is fixedly mounted in the fixing base 1, a control panel is fixedly connected to one side of the motor driver 16 away from the stepping motor 2, the data interface 13, the buttons 14, the display screen 15, the motor driver 16 and the control panel are electrically connected, the data interface 13 may be an RS232 interface in the prior art, information such as operation data can be output to a specific storage unit through the RS232 interface, so as to be stored, and data observation can be facilitated through the display screen 15.

Through setting up magnet steel 4 and proximity switch 11, let step motor 2 rotate with a fixed starting point all the time, can with present according to range scope and required precision predetermine several calibration points, treat that the angular transducer calibration of surveying is timed through pressing button 14 operation can, convenient and fast improves staff's calibration rate.

As shown in fig. 1, in this embodiment, the bottom of fixing base 1 is that a plurality of supporting pads 17 of fixedly connected with evenly arrange the border, and supporting pad 17 is the rubber material, and supporting pad 17 is the ground mat that has support height adjusting function among the prior art, is convenient for support and the leveling to fixing base 1, makes fixing base 1's bottom and ground keep certain clearance simultaneously, and the fixing base 1 of being convenient for atress in handling improves the convenience of transport.

As shown in fig. 7, in this embodiment, the bottom of the adapter shaft 3 is provided with a yielding groove 31 adapted to the output shaft of the stepping motor 2, the yielding groove 31 is in clearance fit with the output shaft of the stepping motor 2, and the output shaft of the stepping motor 2 is accommodated by providing the yielding groove 31, so that when the stepping motor 2 is assembled with the adapter shaft 3, the output shaft of the stepping motor 2 interferes with the adapter shaft 3, and normal installation of the stepping motor 2 and the adapter shaft 3 is affected.

According to the technical scheme provided by the invention, through the stepping motor, the switching shaft and the test seat which are coaxial and vertically arranged, the influence of gravity on the concentricity of the system can be avoided, the assembly concentricity level is improved, the calibration error of the angle sensor is reduced, and the product reject ratio is reduced.

Before demarcating, insert first spacing downthehole with the pivot of the angle sensor that awaits measuring, conflict effect to spring one end through holding screw, make the spring promote the knock pin under self spring action and slide to one side near first spacing hole along the axial of third through-hole, conflict all around through the square pivot of knock pin to the angle sensor that awaits measuring, in order to eliminate the shaft hole fit clearance of the angle sensor pivot that awaits measuring and first spacing hole, avoid off-centre, ensure the assembly concentricity requirement, and treat the shell of angle sensor that awaits measuring through the switching axle and carry out spacingly, it is spacing to the top of the angle sensor that awaits measuring with the mode of perpendicular pressfitting fastening through quick tong, traditional screw fixation or chuck fixed mode relatively, can avoid the concentricity error that the fixed mode that causes because screw hole or chuck precision deviation by the at utmost, improve and demarcate the precision.

By arranging the stepping motor as an angle reference source, not only can automatic operation be realized, but also the installation of a code disc or an encoder used as a reference can be saved, the assembly error caused by too many adapter pieces can be reduced, and the calibration precision level is improved.

The upper cover plate on the adapter shaft limits the placement angle of the shell of the angle sensor to be tested, the shell of the angle sensor to be tested is completely limited by matching with the quick clamp, the angle sensor to be tested is prevented from moving in the calibration process, and the upper cover plate, the adapter shaft, the test seat and the upper cover plate are fixed through bolts, simple in structure and convenient to disassemble, assemble and maintain.

Through setting up magnet steel and proximity switch, let step motor rotate with a fixed starting point all the time, can with present according to range scope and required precision predetermine several calibration points, treat that the angular transducer calibration of surveying is regular time through pressing the button operation can, convenient and fast improves staff's calibration rate, is convenient for carry out data observation through the display screen, reduces and reads the parameter error.

The invention is intended to cover alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the invention. In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail as not to unnecessarily obscure aspects of the present invention.

Those skilled in the art will appreciate that all or part of the steps in the method for implementing the above embodiments may be implemented by relevant hardware instructed by a program, and the program may be stored in a computer readable storage medium, such as: ROM/RAM, magnetic disk, optical disk, etc.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims (10)

1. The utility model provides an angle sensor calibration device under line which characterized in that includes: the testing device comprises a fixed seat, wherein the top of the fixed seat is fixedly connected with an upper cover plate, the upper cover plate is fixedly connected with a testing seat for supporting an angle sensor shell, a transfer shaft for limiting an angle sensor rotating shaft is sleeved in the testing seat, a positioning part for centering the angle sensor rotating shaft is arranged on the transfer shaft, a quick clamping hand for matching the testing seat to limit the angle sensor shell is arranged on the testing seat, a stepping motor for matching the transfer shaft and the positioning part to calibrate the angle sensor rotating shaft is fixedly connected in the fixed seat, and the stepping motor, the transfer shaft and the testing seat are coaxial and are vertically arranged;

first spacing hole has been seted up at the top of switching axle, first spacing hole is the square hole, it evenly arranges and has seted up four third through-holes to be the border on the switching axle, the third through-hole with first spacing hole is linked together, positioning element include through the screw thread with third through-hole fixed connection's holding screw, the downthehole slip of third through-hole has been cup jointed and has run through and extend to the knock pin in the first spacing hole, the knock pin is kept away from the fixed cover of the one end in first spacing hole has been cup jointed the spring, the spring is kept away from the one end of knock pin with the holding screw is contradicted.

2. The offline calibration device for the angle sensor according to claim 1, wherein the third through hole is a counter bore, a limit stop ring is fixedly sleeved on the ejector pin, the limit stop ring abuts against an inner wall of one side of the third through hole, and a chamfer is formed at one end of the ejector pin, which is located in the first limit hole.

3. The angle sensor off-line calibration device according to claim 1, wherein the upper cover plate is eccentrically provided with a first mounting hole, and the test socket is fixedly connected with the upper cover plate through the first mounting hole.

4. The offline calibration device for the angle sensor according to claim 1, wherein a plurality of first limiting sleeves are fixedly connected to the test seat, and the quick clamping hand is fixedly connected with the quick clamping hand through the first limiting sleeves.

5. The offline calibration device for the angle sensor according to claim 3, wherein the test seat is fixedly connected with the first mounting hole through a bolt, the test seat is fixedly connected with a top mounting hole of the stepping motor through a bolt, and the transfer shaft is fixedly connected with the output end of the stepping motor through a bolt.

6. The angle sensor off-line calibration device according to claim 3, wherein the test base is provided with a first limit groove adapted to the angle sensor housing, a connecting flange is fixedly sleeved at a middle portion of the test base, the connecting flange is fixedly sleeved with the first mounting hole, a first through hole adapted to the adapter shaft is formed at a bottom of the first limit groove, a first adapting groove adapted to the positioning ring of the stepping motor is formed at a bottom of the test base, and a plurality of process grooves are uniformly arranged at the bottom of the test base in a circumferential manner.

7. The offline calibration device for the angle sensor according to claim 1, wherein a second adapting groove communicated with the first limiting hole is further formed in the top of the transfer shaft.

8. The angle sensor offline calibration device of claim 6, wherein a second through hole communicated with the first through hole is formed in one side of the test base, a proximity switch is fixedly sleeved in the second through hole, a second limit groove coaxial with the second through hole is formed in the transfer shaft, magnetic steel is fixedly sleeved in the second limit groove, a data interface, a display screen and a plurality of buttons are fixedly installed at the top of the upper cover plate, a motor driver is fixedly installed in the fixing base, a control panel is fixedly connected to one side of the motor driver, which is far away from the stepping motor, and the stepping motor, the data interface, the buttons, the display screen, the motor driver and the control panel are electrically connected.

9. The angle sensor off-line calibration device according to claim 1, wherein a plurality of supporting pads are fixedly connected to the bottom of the fixing base in a circumferentially uniform arrangement, and the supporting pads are made of rubber.

10. The off-line calibration device for the angle sensor according to claim 1, wherein a yielding groove adapted to the output shaft of the stepping motor is formed at the bottom of the transfer shaft, and the yielding groove is in clearance fit with the output shaft of the stepping motor.

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