Angle encoder test tool clamp for high and low temperature chamber

By setting the motor outside the high and low temperature box and fixing the encoder inside, the problem of the existing technology that the angle encoder cannot be tested in high and low temperature environments is solved, and the accuracy testing and installation accuracy in high and low temperature environments are improved.

CN223412716UActive Publication Date: 2025-10-03JIANGSU QIAOSI TECH CO LTD
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Patent Information

Application Number
CN202423013292.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-06
Publication Date
2025-10-03
Estimated Expiration
2034-12-06

AI Technical Summary

Technical Problem

Existing angle encoder test fixtures cannot perform accuracy tests in high and low temperature environments, and cannot guarantee the normal operation and stable power supply of the motor in high and low temperature environments.

Method used

A test fixture for angle encoders in high and low temperature chambers is designed. The motor is set outside the chamber, and the encoder is extended into the chamber. The encoder stator and rotor are fixed by a support base and a clamping ring. The height and concentricity are adjusted using a lifting platform to adapt to encoders of different shapes and specifications.

Benefits of technology

It realizes the precision test of angle encoder in high and low temperature environment, improves the installation accuracy and concentricity, and adapts to the requirements of different air gap spacing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an angle encoder test tool clamp for a high and low temperature chamber. The angle encoder test tool clamp comprises a mounting base, a motor, a rotor shaft, a supporting base and a clamping ring, the mounting base is arranged on the lifting platform, the motor is arranged on the mounting base, and the rotor shaft is connected to a motor rotor of the motor; the supporting base is provided with a shaft hole and sleeves the rotor shaft, one end of the supporting base is fixedly connected with the mounting base, the encoder stator is connected to the other end of the supporting base, and the encoder rotor is connected to the clamping ring; one end, away from the motor, of the rotor shaft penetrates through shaft holes of the support base and the encoder stator-rotor and then is connected with the clamping ring; the height of the supporting base can be adjusted along with the lifting table, and the end, away from the motor, of the supporting base extends into the high-low temperature box through the through hole to enable the angle encoder to be located in the high-low temperature box. According to the tool clamp, the motor can be arranged on the outer side of the high-low temperature box, and the encoder extends into the high-low temperature box, so that normal operation of the motor in a normal temperature environment can be realized, and the angle encoder can be tested in the high-low temperature environment.
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Description

Technical Field

[0001] The utility model relates to an angle encoder testing fixture for a high and low temperature box, belonging to the technical field of angle encoder testing. Background Art

[0002] An angle encoder is a device used to measure or encode rotation angles. It is commonly used in fields such as mechanical control, position detection, and navigation systems. Angle encoders achieve measurement purposes by converting rotation angles into electrical signals.

[0003] An angle encoder usually consists of two parts, a stator and a rotor. The stator is fixed to the mechanical equipment, while the rotating part rotates with the mechanical equipment. During the rotation process, the angle encoder will sense the rotation angle and convert it into a corresponding electrical signal.

[0004] Angle encoders often need to work in high and low temperature environments. The existing common angle encoder test fixtures are basically designed based on a normal temperature working environment. Since the accuracy of the motor and whether it can work normally in high and low temperature environments cannot be guaranteed, and the motor cannot be powered stably in the high and low temperature box, the existing angle encoder test fixtures cannot be used to test the accuracy of the angle encoder in a high and low temperature box, and it is also impossible to test the accuracy of the angle encoder in a high and low temperature environment. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and to provide an angle encoder testing fixture that can be tested in high and low temperature environments.

[0006] In order to achieve the above-mentioned object, the technical solution proposed in the present invention is as follows: a test fixture for an angle encoder for a high-temperature and low-temperature chamber, wherein the angle encoder includes an encoder stator and an encoder rotor, each of which is provided with an axial hole; a through hole is provided on one side wall of the high-temperature and low-temperature chamber; the test fixture includes a mounting base, a motor, a rotor shaft, a support base, and a clamping ring;

[0007] The mounting base is arranged on the lifting platform, the motor is arranged on the mounting base, and the rotor shaft is connected to the motor rotor of the motor;

[0008] The support base is provided with an axial hole, the support base is sleeved on the rotor shaft, and one end of the support base is fixedly connected to the mounting base, the encoder stator is connected to the other end of the support base, and the encoder rotor is connected to the clamping ring; the end of the rotor shaft away from the motor passes through the axial holes of the support base, the encoder stator and the encoder rotor, and is then connected to the clamping ring;

[0009] The support base can be adjusted in height along with the lifting platform, and one end away from the motor extends into the high and low temperature box from the through hole, so that the angle encoder is located in the high and low temperature box.

[0010] A further design of the above technical solution is as follows: the motor rotor is arranged at one end of the motor close to the rotor shaft and is annular. The motor rotor protrudes from the end face of the motor. A limiting groove is provided at one end of the rotor shaft close to the motor. The outer ring diameter of the motor rotor matches the inner diameter of the limiting groove.

[0011] The mounting base is provided with a first screw hole for connecting to a supporting base or a measuring meter.

[0012] A second screw hole for connecting a measuring meter is provided at the center of one end of the rotor shaft away from the motor.

[0013] The support base is rotatably connected to the rotor shaft via a bearing.

[0014] The encoder stator is provided with a plurality of positioning holes, and the support base is provided with positioning pins at positions corresponding to the positioning holes. The encoder stator is positioned on the support base through the cooperation between the positioning holes and the positioning pins.

[0015] The encoder stator is provided with a plurality of fixing holes for connecting with the support base. The support base is provided with screw holes corresponding to the fixing holes. The encoder stator is fixed to the support base by arranging screws in the corresponding fixing holes and screw holes.

[0016] The encoder stator is connected to the adapter, and the adapter is connected to the support base; the encoder stator is provided with a plurality of positioning holes, and the adapter is provided with positioning pins at positions corresponding to the positioning holes, and the encoder stator is positioned on the adapter through the cooperation between the positioning holes and the positioning pins.

[0017] The encoder stator is provided with a plurality of fixing holes for connecting to the adapter, and the adapter is provided with screw holes corresponding to the fixing holes. The encoder stator is fixed to the adapter by setting screws in the corresponding fixing holes and screw holes;

[0018] The adapter is provided with fixing holes at positions corresponding to the support base, and the adapter is connected to the support base by arranging screws in the fixing holes.

[0019] The encoder rotor is provided with a plurality of fixing holes for connecting with the clamping ring. The clamping ring is provided with screw holes corresponding to the fixing holes. The encoder rotor is fixed to the clamping ring by arranging screws in the corresponding fixing holes and screw holes.

[0020] The beneficial effects of the present invention are:

[0021] The angle encoder test fixture of the utility model is designed based on the characteristics of the circular through hole on the side wall of the temperature chamber. The motor is set outside the high and low temperature chamber, and the encoder is extended into the high and low temperature chamber and is placed in a high and low temperature environment. This allows the motor to operate normally in a normal temperature environment and be tested in a high and low temperature environment.

[0022] The angle encoder test fixture of the utility model can improve the installation accuracy of the angle encoder by arranging a measuring meter on the rotor shaft, thereby improving the concentricity and parallelism of the angle encoder installation.

[0023] This angle encoder test fixture is designed to accommodate varying requirements for the stator-rotor air gap. Adjusting the rotor mounting clamping ring on the rotor shaft allows for adjustment of the stator-rotor air gap. The support base and clamping ring, respectively, secure the stator and rotor of the angle encoder. The mounting holes can be adjusted to accommodate angle encoders of varying shapes and specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an axonometric view of the test fixture of Example 1;

[0025] Figure 2 This is an exploded view of the test fixture of Example 1;

[0026] Figure 3 A top view of the test fixture of Example 1;

[0027] Figure 4 for Figure 3 Middle YY section view;

[0028] Figure 5 This is an axonometric view of the test fixture of Example 2;

[0029] Figure 6 This is an exploded view of the test fixture of Example 2;

[0030] Figure 7 A top view of the test fixture of Example 2;

[0031] Figure 8 for Figure 7 Middle YY-axis sectional view;

[0032] Figure 9 This is a test diagram of the test fixture of the utility model;

[0033] In the figure: 1-mounting base, 101-first screw hole, 2-motor, 3-rotor shaft, 31-second screw hole, 4-bearing one, 5-bearing end cover one, 6-sleeve one, 7-bearing two, 8-bearing end cover two, 9-sleeve two, 10-support base, 11-encoder stator, 12-encoder rotor, 13-clamping ring, 14-adapter, 15-high and low temperature box, 151-through hole, 16-lifting platform. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Example 1

[0035] like Figure 1 and Figure 2 As shown, the installation object of this embodiment is a non-contact angle encoder with a diameter of 75 mm. The angle encoder test fixture of the high and low temperature box of this embodiment includes a mounting base 1, a motor 2, a rotor shaft 3, a support base 10 and a clamping ring 13.

[0036] The bottom surface of the mounting base 1 is provided with a fixing hole to fix the mounting base 1 to the external lifting platform 16, so as to adjust the overall height of the fixture to adapt to the position height of the through hole 151 on the side wall of the high and low temperature box 15. Figure 9 As shown, a groove is provided on the front of the mounting base 1, the upper part of the groove is semicircular, and the lower part is cross-slope type, which is used to support the motor 2. Fixing holes are provided on the bottom of the groove, which can fix the motor mounting base 1 and the motor 2 as a whole; a plurality of first screw holes 101 are provided on the edge of the groove for fixing the support base 10 to the motor mounting base 1.

[0037] Motor 2 has an axial hole at the bottom, surrounded by mounting holes that mate with the mounting holes in the bottom of the groove in mounting base 1. Motor 2 is secured to the bottom of the groove in mounting base 2 by screws inserted into these two mounting holes. A dial indicator is installed in first screw hole 101 to adjust the concentricity and parallelism between motor mounting cage base 2 and motor 1. The shape of the groove in mounting base 1 and the position of the mounting holes on the bottom of the groove can be adjusted based on the shape of motor 2 and the position of the mounting holes at the bottom.

[0038] One end of motor 2 is equipped with an annular motor rotor, the end face of which protrudes from the motor end face. A retaining groove is provided on the rotor shaft 3 near the end of motor 2. The outer ring diameter of the motor rotor matches the inner diameter of the retaining groove. The rotor shaft 3 is positioned on motor 2 through the cooperation of the retaining groove and the motor rotor. The rotor of motor 2 has fixing holes, and the rotor shaft 3 has matching fixing holes at corresponding locations. Screws are installed in the two fixing holes to secure the rotor shaft 3 to the rotor of motor 2. The shape of the groove on the bottom surface of the rotor shaft 3 can be set according to the shape of the rotor of motor 2, and the position of the fixing holes is set according to the position of the fixing holes of the rotor of motor 2.

[0039] Combine Figure 3 and Figure 4 As shown, support base 10 is sleeved onto rotor shaft 3, with the two rotatably connected via a bearing structure. The rotor shaft 3 has a stepped journal with bearings mounted on it. An M5 threaded hole (second threaded hole 31) is located at the top center of the shaft and is used to secure a dial indicator to measure the concentricity of the stator and rotor of the angle encoder.

[0040] The bearings on the shaft neck of the rotor shaft 3 include bearing 1 4 and bearing 2 7 of different sizes. Bearing 1 4 and bearing 2 7 are respectively provided with bearing end cover 1 5 and bearing end cover 2 8. Bearing end cover 1 5 and bearing end cover 2 8 are respectively connected to bearing 1 4 and bearing 2 7 through hole-shaft clearance fit, and then connected to the support base 10 into a whole through hole-shaft interference fit; the inner diameter of bearing 1 4 and bearing 2 7 is determined by the diameter of the corresponding stepped shaft section on the rotor shaft 3; the outer diameter of the groove on one side of bearing end cover 1 5 and bearing end cover 2 8 is respectively determined by the outer diameter of bearing 1 4 and bearing 2 7, and the outer diameter is determined by the inner wall diameter of the support base 10; bearing end cover 1 5 and bearing end cover 2 8 are stepped as a whole, and the top boss is used to limit the axial position of bearing 4 and bearing 7 together with the shoulder of the rotor shaft 3.

[0041] The rotor shaft 3 is also covered with sleeves 6 and 9 to limit the axial position of the bearing end cover 5 and the bearing end cover 8. The outer diameter of the sleeves 6 and 9 is determined by the inner wall diameter of the angle encoder stator mounting support base 10.

[0042] The support base 10 has an axial hole. At the end away from the motor, fixed holes are formed around the axial hole for connecting to the encoder stator 11. The encoder stator 11 has matching fixed holes and is connected to the support base 10 via screws. A wire outlet hole is formed on the side of the support base 10 to facilitate the output of the encoder stator 11. A fixed hole for connecting to the mounting base 1 is formed at the end near the motor, corresponding to the first screw hole 101. The mounting base 1 can be fixed integrally to the mounting base 1 via screws. The outer diameter of the support base 10 is smaller than that of the through hole 151 in the side wall of the incubator, allowing it to be inserted into the through hole. The angle encoder is placed in the high and low temperature chamber 15, and a soft rubber pad is used to support and fix it in the gap between the through hole 151 and the support base 10.

[0043] The support base 10 is further provided with a positioning hole at one end away from the motor, and the encoder stator 11 is also provided with a positioning hole at a corresponding position. By arranging positioning pins in the positioning holes, the concentricity and parallelism between the support base 10 and the encoder stator 11 are ensured.

[0044] The position of the fixing hole of the support base 10 can be adjusted according to the position of the fixing hole of the encoder stator 11 ; the position of the wire outlet hole can also be adjusted according to the wire outlet position of the encoder stator 11 .

[0045] An axial hole is opened in the center of the clamping ring 13, and the clamping ring 13 is sleeved on the rotor shaft 3; fixing holes for connecting the encoder rotor 12 are opened around the axial hole of the clamping ring 13, and the encoder rotor 12 is provided with matching fixing holes, and the encoder rotor 12 is connected to the clamping ring 13 by screws.

[0046] A notch is formed on one side of the clamping ring 13, a through hole is formed on one side of the notch, and a threaded hole is formed on the other side for a locking screw to pass through the through hole and the threaded hole for fixing and locking. By adjusting the position of the clamping ring 13 on the rotor shaft 3, the installation air gap of the stator and rotor of the angle encoder can be adjusted.

[0047] The fixing hole position in the clamping ring 13 for mounting the encoder rotor 12 can be adjusted according to the fixing hole position of the encoder rotor 12 to accommodate angle encoders of different sizes; the inner diameter of the clamping ring 13 is designed according to the diameter of the mounting shaft section of the rotor shaft 3.

[0048] When installing and using the test fixture of this embodiment, first, fix the motor 2 to the bottom surface of the front groove of the mounting base 1 with screws, and set a micrometer in the first screw hole 101 to adjust the concentricity and parallelism between the mounting base 1 and the motor 2; then fix the rotor shaft 3 to the rotor of the motor 2, and position it through the groove on the bottom surface of the rotor shaft 3 to ensure the concentricity and perpendicularity of the rotor shaft 3 and the motor 2; then connect the rotor shaft 3 to the support base 10 through the bearing; then install the support base 10 on the mounting base 1, and adjust the concentricity of the two by setting a micrometer in the second screw hole 31; then connect the mounting base 1 to the lifting platform 16, adjust the height so that the support base 10 passes through the through hole 151 on the side wall of the temperature chamber, and install the encoder stator 11 on the support base 10 in the temperature chamber, and use the positioning pin to ensure the concentricity and parallelism between the encoder stator 11 and the support base 10. Finally, install the encoder rotor 12 on the clamping ring 13, and after assembly, install the clamping ring 13 on the rotor shaft 3. After installation, the angle encoder and motor 2 can maintain high concentricity and parallelism. Example 2

[0049] See also Figures 5 to 8 As shown, the installation object of this embodiment is a non-contact angle encoder with a diameter of 175 mm. The test fixture of this embodiment is basically the same as that of Example 1. The difference lies in the size of each component and the position of the fixing holes, which are set according to the stator and rotor of the angle encoder.

[0050] In this embodiment, the encoder stator 11 is connected to the adapter 14, which is in turn connected to the support base 10. The encoder stator is provided with several fixing holes and positioning holes for connecting to the adapter 14. The adapter 14 has matching fixing holes and positioning pins corresponding to the fixing holes. Positioning through the positioning holes and positioning pins ensures concentricity and parallelism between the encoder stator 11 and the adapter 14. The encoder stator is secured to the adapter 14 by screws inserted into the corresponding fixing holes.

[0051] The adapter 14 is provided with matching fixing holes at positions corresponding to the support base 10 , and the adapter 14 is connected to the support base 10 by installing screws in the fixing holes.

[0052] The technical solutions of the present invention are not limited to the above embodiments, and any technical solutions obtained by equivalent replacement methods fall within the scope of protection required by the present invention.

Claims

1. A fixture for testing an angle encoder in a temperature and low temperature chamber, wherein the angle encoder comprises an encoder stator and an encoder rotor, each of which has an axial hole. A through hole is provided on one side wall of the temperature and low temperature chamber. The fixture is characterized by: The test fixture includes a mounting base, a motor, a rotor shaft, a support base and a clamping ring; The mounting base is arranged on the lifting platform, the motor is arranged on the mounting base, and the rotor shaft is connected to the motor rotor of the motor; The support base is provided with an axial hole, the support base is sleeved on the rotor shaft, and one end of the support base is fixedly connected to the mounting base, the encoder stator is connected to the other end of the support base, and the encoder rotor is connected to the clamping ring; the end of the rotor shaft away from the motor passes through the axial holes of the support base, the encoder stator and the encoder rotor, and is then connected to the clamping ring; The support base can be adjusted in height along with the lifting platform, and one end away from the motor extends into the high and low temperature box from the through hole, so that the angle encoder is located in the high and low temperature box.

2. The angle encoder test fixture for a high and low temperature chamber according to claim 1, characterized in that: The motor rotor is arranged at one end of the motor close to the rotor shaft and is annular. The motor rotor protrudes from the end face of the motor. A limiting groove is provided at one end of the rotor shaft close to the motor. The outer ring diameter of the motor rotor matches the inner diameter of the limiting groove.

3. The angle encoder test fixture for a high and low temperature chamber according to claim 2, characterized in that: The mounting base is provided with a first screw hole for connecting to a supporting base or a measuring meter.

4. The angle encoder test fixture for a high and low temperature chamber according to claim 3, characterized in that: A second screw hole for connecting a measuring meter is provided at the center of one end of the rotor shaft away from the motor.

5. The angle encoder test fixture for a high and low temperature chamber according to claim 4, characterized in that: The support base is rotatably connected to the rotor shaft via a bearing.

6. The angle encoder test fixture for a high and low temperature chamber according to claim 5, characterized in that: The encoder stator is provided with a plurality of positioning holes, and the support base is provided with positioning pins at positions corresponding to the positioning holes. The encoder stator is positioned on the support base through the cooperation between the positioning holes and the positioning pins.

7. The angle encoder test fixture for a high and low temperature chamber according to claim 6, characterized in that: The encoder stator is provided with a plurality of fixing holes for connecting with the support base. The support base is provided with screw holes corresponding to the fixing holes. The encoder stator is fixed to the support base by arranging screws in the corresponding fixing holes and screw holes.

8. The angle encoder test fixture for a high and low temperature chamber according to claim 5, characterized in that: The encoder stator is connected to the adapter, and the adapter is connected to the support base; the encoder stator is provided with a plurality of positioning holes, and the adapter is provided with positioning pins at positions corresponding to the positioning holes, and the encoder stator is positioned on the adapter through the cooperation between the positioning holes and the positioning pins.

9. The angle encoder test fixture for a high and low temperature chamber according to claim 8, characterized in that: The encoder stator is provided with a plurality of fixing holes for connecting to the adapter, and the adapter is provided with screw holes corresponding to the fixing holes. The encoder stator is fixed to the adapter by setting screws in the corresponding fixing holes and screw holes; The adapter is provided with fixing holes at positions corresponding to the support base, and the adapter is connected to the support base by arranging screws in the fixing holes.

10. The angle encoder test fixture for a high and low temperature chamber according to claim 7 or 9, characterized in that: The encoder rotor is provided with a plurality of fixing holes for connecting with the clamping ring. The clamping ring is provided with screw holes corresponding to the fixing holes. The encoder rotor is fixed to the clamping ring by arranging screws in the corresponding fixing holes and screw holes.