CN112815981A

CN112815981A - Rotary transformer test fixture based on high-precision rotary table

Info

Publication number: CN112815981A
Application number: CN202110063659.1A
Authority: CN
Inventors: 冯明; 陈泽显
Original assignee: University of Science and Technology Beijing USTB
Current assignee: University of Science and Technology Beijing USTB
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-05-18
Anticipated expiration: 2041-01-18
Also published as: CN112815981B

Abstract

The invention provides a rotary transformer testing tool based on a high-precision rotary table, and belongs to the technical field of performance detection of rotary transformers. The device includes dabber, high accuracy revolving stage, base, surveyed and become soon, stator frock and keysets, and the stator that is surveyed and becomes soon is installed on stator frock, and the rotor is installed at the spindle, and stator and rotor fix on the inside ladder mesa of frock through the tapered elastic bush of little, and high accuracy revolving stage fixes the dabber on the base, and the dabber passes the hole of high accuracy revolving stage, and stator frock passes through the keysets with high accuracy revolving stage and is connected. The testing tool can be suitable for testing the performance indexes of rotary transformers with different sizes. The test tool has the characteristics of strictly ensuring the coaxiality and the center height error of the tested rotary transformer and being convenient to disassemble and assemble.

Description

Rotary transformer test fixture based on high-precision rotary table

Technical Field

The invention relates to the technical field of performance detection of rotary transformers, in particular to a rotary transformer testing tool based on a high-precision rotary table.

Background

A resolver (abbreviated as "resolver") is widely applied to various fields as a high-precision angular displacement sensor, and is mainly used for measuring the rotating speed and the rotating angle position of a shaft. Compared with the sensors of grating type and Hall element type, the rotary transformer has the characteristics of higher resolution, low cost, wide environment adaptability and the like, and plays a key role in feeding back the axial angle position and speed in the whole machine system, so the accuracy and precision grade of the technical parameters of the rotary transformer directly influence the performance and reliability of the whole machine system.

For the detection of a rotary transformer product, the conventional method is to fix the rotary transformer on a mechanical gradiometer, find a voltage zero position through manual rotation, and step by step according to a certain angle to perform successive test and comparison. The method is labor-consuming, time-consuming and complex in operation, cannot meet the test requirement of a production line, and becomes a bottleneck for hindering the rotary transformer batch industrialization.

The rotary transformer testing tool based on the high-precision rotary table can adapt to quick testing of rotary transformers with different sizes, can complete driving and corner testing work of the rotary transformers with different sizes under the same tool, effectively solves the problems of long test period and low efficiency of the rotary transformers, and lays a foundation for industrial production of the rotary transformers.

Disclosure of Invention

The invention aims to provide a rotary transformer testing tool based on a high-precision rotary table.

The device includes dabber, high accuracy revolving stage, base, surveyed and become soon, stator frock and keysets, and the stator that is surveyed and becomes soon is installed on the stator frock, and the rotor is installed at the spindle, and stator and rotor are fixed on the inside ladder mesa of frock through the tapered elastic bush of little, and the high accuracy revolving stage is fixed the dabber on the base, and the dabber passes the hole of high accuracy revolving stage, and stator frock passes through the keysets with the high accuracy revolving stage and is connected.

The mandrel is a stepped shaft.

The coaxiality between the stator tool and the high-precision rotary table is positioned through the spigot of the adapter plate, the coaxiality and the verticality of the adapter plate and the high-precision rotary table are guaranteed, and the coaxiality of the stator tool and the adapter plate is guaranteed through the spigot of the stator tool.

The stator tool is provided with a rotary transformer stator, the mandrel is provided with a rotary transformer rotor, the rotary transformer stator and the rotary transformer rotor eliminate a gap through a specially-made elastic small-taper bush, and the rotary transformer stator and the rotary transformer rotor are axially centered by means of the stator tool and an axial step surface on the mandrel.

The rotary transformer stator is compressed and fixed through the stator conical bushing, the rotor transition sleeve is installed on the mandrel, and the rotary transformer rotor is compressed and fixed through the rotor conical bushing.

And a radial adjusting screw is arranged on the base and used for adjusting the position of the mandrel.

The small taper elastic bushing is a taper 3-8 degrees, the side surface of the small taper elastic bushing is provided with a slotted annular bushing, and the stator and the rotor can be tightly pressed on the tool under the stress of the elastic bushing.

The technical scheme of the invention has the following beneficial effects:

in the above-mentioned scheme, can strictly guarantee to be surveyed the axiality and the high error of center of revolving and become, have easy dismounting's characteristics simultaneously.

Drawings

FIG. 1 is a schematic diagram of the apparatus of the present invention;

FIG. 2 is a small-sized rotation testing tool of the present invention;

FIG. 3 is a large-sized rotation testing tool according to the present invention;

FIG. 4 is a view showing the stator and rotor of the present invention removed;

fig. 5 is a disassembled view of the rotor transition sleeve of the present invention.

Wherein: 1-mandrel, 2-high-precision rotary table, 3-base, 4-measured rotary transformer, 5-stator tool, 6-adapter plate, 7-stator conical bushing, 8-rotary transformer stator, 9-rotary transformer rotor, 10-rotor conical bushing, 11-rotor transition sleeve, 12-radial adjusting screw, 13-conical sleeve taking-out bolt and 14-rotor transition sleeve taking-out bolt.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides a rotary transformer testing tool based on a high-precision rotary table.

The tool is suitable for small-size rotation deformation testing and large-size rotation deformation testing, which are respectively shown in fig. 2 and fig. 3.

As shown in fig. 1, the device comprises a mandrel 1, a high-precision turntable 2, a base 3, a measured rotary transformer 4, a stator tool 5 and an adapter plate 6, wherein a rotary transformer stator 8 of the measured rotary transformer 4 is installed on the stator tool 5, a rotary transformer rotor 9 is installed on the mandrel 1, the stator and the rotor are fixed on a step table surface inside the tool through a small-taper elastic bushing, the mandrel 1 is fixed on the base 3 by the high-precision turntable 2, the mandrel 1 penetrates through an inner hole of the high-precision turntable 2, and the stator tool 5 is connected with the high-precision turntable 2 through the adapter plate 6.

The small-size rotation test tool is shown in fig. 2, the tested rotation is changed into a small-size rotation, and the principle of the small-size rotation test tool is the same as that of the large-size rotation test tool, and the small-size rotation test tool is described by taking fig. 2 as an example. The core shaft 1 penetrates through the rotary table hole, the rotary table and the core shaft are both fixed on the base 3, and the stator tool shell is fixed on the rotary table through the adapter plate 6. During testing, the stator to be tested is arranged in the stator tool shell, the rotor is arranged on the mandrel 1, the turntable drives the stator to rotate, and the rotor is static. The coaxiality of the stator tool shell and the mandrel is guaranteed by means of the radial position of the adjusting mandrel, and the axial position of the stator tool shell is guaranteed by means of the positioning surface on the stator and the mandrel. When the stator and the rotor are installed on the stator tool 5 and the mandrel 1, an anti-backlash structure is adopted to eliminate an installation gap, and coaxiality and axial centering degree after installation are guaranteed.

When the test tool is installed, as shown in fig. 2, firstly, the mandrel 1 is fixed on the base 3, then, the mandrel penetrates through a center hole of the rotary table, the position of the rotary table is adjusted, the high-precision rotary table 2 is fixed on the base 3, the adapter plate 6 is installed on the rotary table, then, the stator tool is installed on the adapter plate, the rotary stator 8 is installed on the stator tool 5, and the rotary stator 8 is compressed and fixed through the stator conical bushing 7. The rotor transition sleeve 11 is installed on the mandrel 1, then the rotor 9 is installed, and the rotor taper bush 10 is used for compressing and fixing the rotor 9.

When the test tool is disassembled, as shown in fig. 4, firstly, the taper sleeve taking-out bolt 13 is screwed into a threaded hole on the end face of the stator taper bush 7, the bush can be taken out by lifting, the stator can be taken out, and the rotor is taken out in the same way; when the rotor transition sleeve is replaced, as shown in fig. 5, the rotor transition sleeve taking-out bolt 14 is screwed into the threaded hole at the top of the rotor transition sleeve 11, and the rotor transition sleeve can be taken out through rotation.

The rotary transformer rotor 9 is indirectly and fixedly connected with the base 3, the rotary transformer stator 8 is indirectly and fixedly connected with the rotating part of the high-precision turntable 2, and during testing, the rotary transformer stator 8 rotates, and the rotary transformer rotor 9 is static.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a resolver test fixture based on high accuracy revolving stage which characterized in that: including dabber (1), high accuracy revolving stage (2), base (3), surveyed and change soon (4), stator frock (5) and keysets (6), it installs on stator frock (5) to be surveyed change soon stator (8) of changing (4), change soon rotor (9) to install on dabber (1), stator and rotor are fixed on the inside ladder mesa of frock through the tapered elastic bush of little, high accuracy revolving stage (2) are fixed dabber (1) on base (3), the hole of high accuracy revolving stage (2) is passed in dabber (1), stator frock (5) are connected through keysets (6) with high accuracy revolving stage (2).

2. The rotary transformer testing tool based on the high-precision rotary table according to claim 1, characterized in that: the mandrel (1) is a stepped shaft.

3. The rotary transformer testing tool based on the high-precision rotary table according to claim 1, characterized in that: the coaxiality between the stator tool (5) and the high-precision rotary table (2) is positioned through the spigot of the adapter plate (6), the coaxiality and the verticality of the adapter plate (6) and the high-precision rotary table (2) are guaranteed, and the coaxiality between the stator tool (5) and the adapter plate (6) is guaranteed through the spigot of the stator tool (5).

4. The rotary transformer testing tool based on the high-precision rotary table according to claim 1, characterized in that: the stator tool (5) is provided with a rotary transformer stator (8), the mandrel (1) is provided with a rotary transformer rotor (9), the rotary transformer stator (8) and the rotary transformer rotor (9) are in clearance elimination through a small-taper elastic bushing, and the rotary transformer stator (8) and the rotary transformer rotor (9) are axially centered by virtue of axial step surfaces on the stator tool (5) and the mandrel (1).

5. The rotary transformer testing tool based on the high-precision rotary table according to claim 4, wherein: the rotary transformer stator (8) is compressed and fixed through a stator conical bushing (7), a rotor transition sleeve (11) is installed on the mandrel (1), and the rotary transformer rotor (9) is compressed and fixed through a rotor conical bushing (10).

6. The rotary transformer testing tool based on the high-precision rotary table according to claim 1, characterized in that: and a radial adjusting screw (12) is arranged on the base (3) and used for adjusting the position of the mandrel (1).

7. The rotary transformer testing tool based on the high-precision rotary table according to claim 1, characterized in that: the small-taper elastic bushing is a taper of 3-8 degrees, a grooved annular bushing is arranged on the side face, and the stator and the rotor can be tightly pressed on the tool under the stress of the elastic bushing.