Batch test tool for testing performance of angular displacement sensor

Abstract

The utility model discloses a batch test tool for testing the performance of an angular displacement sensor, which comprises supporting columns, a driving seat, a driving motor, a driving gear, a driven gear, a mounting plate and a compression bolt, the driving seat is mounted at the upper parts of a plurality of supporting columns, and a shaft of the driving motor is connected with the driving gear through a shaft sleeve; the multiple driven gears are connected with the multiple connecting shafts respectively, the shaft sleeve and the connecting shafts are connected with the driving base through bearings respectively, the multiple driven gears are connected with the driving gear in a meshed mode respectively, positioning holes are formed in the middles of the upper faces of the driven gears, multiple installation sinking grooves are formed in the upper face of the installation plate, and sinking groove through holes are formed in the middles of the bottoms of the installation sinking grooves. The plurality of sinking groove through holes are respectively positioned above the plurality of positioning holes, and the plurality of compression bolts are respectively mounted on the mounting plate. According to the utility model, the rotating shafts of a plurality of angular displacement sensors are driven to rotate at a time so as to realize batch testing, the testing efficiency is improved, and the testing cost is reduced.

Description

Technical Field

[0001] The utility model relates to an angular displacement sensor performance test tool, in particular to a batch test tool used for angular displacement sensor performance test. Background Art

[0002] As industrial control systems develop towards miniaturization and precision, position feedback displacement sensors (or potentiometers) used in conjunction with them are also widely used. Among them, angular displacement sensors (or potentiometers) are highly favored due to their long life, excellent output accuracy, stable and reliable performance, and simple use.

[0003] like Figure 1 , Figure 2 and Figure 3 As shown, a common angular displacement sensor has a flange 2 at one end of its housing 1, and electronic components for detecting changing electrical signals are arranged in the housing 1 (for example, a magnetic sensitive angular displacement sensor includes a magnet, a magnetic sensitive element, a hardware circuit, etc., and a conductive plastic angular displacement potentiometer includes a resistor, an insulating sleeve, a collector ring, a brush, etc.), and a rotating shaft 3 passes through a corresponding through hole on the housing 1 (the rotating shaft 3 is connected to the housing 1 through a bearing) and a central through hole of the flange 2. In order to facilitate the anti-rotation connection with the rotating part of the device to be tested, a section of the circumferential outer wall of the rotating shaft 3 near the outer end is provided with one (or more) planes 4, and a plurality of mounting holes 5 are provided on the flange 2. When in use, the sensor is installed on other equipment through the flange 2, and the rotating part of the equipment to be tested is connected to the rotating shaft 3. The rotating part rotates to drive the rotating shaft 3 to rotate synchronously. The electronic components in the housing 1 detect the changing electrical signals (for example: the magnet of the magnetic angular displacement sensor rotates synchronously with the rotating shaft 3, and the rotation of the magnet changes the magnetic field strength. After the magnetic sensitive element detects the change in magnetic field strength, it outputs the changing electrical signal through the hardware circuit. The insulating sleeve, collector ring and brush of the conductive plastic angular displacement potentiometer rotate synchronously with the rotating shaft 3, and the brush contacts and slides on the working band of the resistor to output the changing electrical signal) and outputs it to the processor to obtain the corresponding angular displacement information, thereby realizing the angular displacement detection function.

[0004] Angular displacement sensors generally need to undergo various performance tests before leaving the factory, such as rotation life test (i.e. testing the number of consecutive rotations of the sensor's shaft under normal working conditions), linearity test, repeatability test, etc. The testing device is the angular displacement sensor performance test fixture. Its basic principle is to drive the angular displacement sensor's shaft to rotate through a motor, monitor the changes in the sensor's output signal, and use this as a judgment of the sensor performance test results.

[0005] Traditional angular displacement sensor performance testing tooling can only drive an angular displacement sensor through a motor for performance testing. It has the defects of low testing efficiency and high testing cost, and the product delivery time is long, which makes it difficult to meet user needs. Utility Model Content

[0006] The purpose of the utility model is to provide a batch test tool for angular displacement sensor performance testing with high test efficiency and low test cost in order to solve the above problems.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0008] A batch test tool for angular displacement sensor performance testing, comprising a support column, a drive seat and a drive motor, wherein the drive seat is installed on the upper part of a plurality of vertical support columns, the drive motor is installed on a motor bracket, and the motor bracket is installed on the lower part of a plurality of support columns and is located between the plurality of support columns. The batch test tool for angular displacement sensor performance testing also includes a driving gear, a driven gear, a mounting plate and a clamping bolt, the upper end of the shaft of the drive motor is connected to the lower end of the vertical shaft sleeve, the upper end of the shaft sleeve passes through the corresponding through hole on the drive seat and is connected to the middle part of the lower end of the horizontal driving gear, the middle parts of the lower ends of the plurality of horizontal driven gears are respectively connected to a plurality of vertical connecting shafts, the connecting shafts are installed in the corresponding through holes on the drive seat, and the shaft sleeve and the corresponding through hole wall of the drive seat, the The connecting shaft is connected to the corresponding through-hole walls of the driving seat through bearings, and the multiple driven gears are evenly distributed on the outer periphery of the driving gear and are respectively meshed with the driving gear. A vertical positioning hole is provided in the middle of the upper part of the driven gear, and at least one vertical plane is provided on the hole wall surface of the positioning hole. The horizontal mounting plate is installed on the upper end of the support column and is located above the driving gear and the multiple driven gears. A plurality of mounting grooves are provided on the mounting plate, and a vertical groove through hole is provided in the middle of the groove bottom of the mounting groove. The multiple groove through holes are respectively located above the multiple positioning holes. The screw rods of the multiple vertical clamping bolts are respectively installed in the corresponding screw holes on the mounting plate and close to the corresponding mounting grooves, and the nut of each clamping bolt is partially located in the upper area of ​​the corresponding mounting groove.

[0009] Preferably, in order to reliably clamp multiple angular displacement sensors with fewer clamping bolts, the clamping bolts include a central clamping bolt and multiple peripheral clamping bolts, the central clamping bolt is located at the center position between the multiple mounting grooves, the multiple peripheral clamping bolts are respectively located on the outside of the multiple mounting grooves, and each of the peripheral clamping bolts and the central clamping bolt are respectively located outside the opposite sides of the corresponding mounting groove.

[0010] Preferably, in order to avoid mutual influence between the driven gears and to realize batch testing as much as possible, the number of the driven gear, the connecting shaft, the mounting groove and the surrounding clamping bolts are four.

[0011] Preferably, in order to avoid scratching the flange of the angular displacement sensor during installation, a transverse groove bottom rubber pad is provided at the bottom of each mounting groove, a vertical through hole corresponding to the groove through hole is provided at the center position of the groove bottom rubber pad, a transverse center bolt rubber pad is mounted on the screw rod of the center clamping bolt, and a transverse surrounding bolt rubber pad is mounted on the screw rod of the surrounding clamping bolt.

[0012] Preferably, in order to facilitate processing and assembly, a drive seat recess is provided on the top of the drive seat, and the driving gear and the plurality of driven gears are all located in the drive seat recess.

[0013] Preferably, in order to achieve reliable support, the number of the support columns is four and they are arranged in a square.

[0014] The beneficial effects of the utility model are:

[0015] The utility model designs a driving gear and multiple driven gears that are meshed and connected to each other, arranges a positioning hole on the driven gear for positioning the rotating shaft of the angular displacement sensor, arranges multiple mounting grooves on the mounting plate for placing the flange of the angular displacement sensor, and uses clamping bolts to clamp the flange, thereby finally realizing the purpose of rotating shafts of multiple angular displacement sensors being driven to rotate at one time to achieve batch testing, thereby improving testing efficiency, reducing testing costs, shortening product delivery time, and meeting customer usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of an angular displacement sensor;

[0017] Figure 2 It is a schematic diagram of the upward structure of an angular displacement sensor;

[0018] Figure 3 It is a schematic diagram of the top view structure of an angular displacement sensor;

[0019] Figure 4 It is a schematic diagram of the main cross-sectional structure of the batch test tooling for the performance test of the angular displacement sensor according to the utility model;

[0020] Figure 5 It is a schematic diagram of the top view of the batch test tooling for the performance test of the angular displacement sensor according to the utility model;

[0021] Figure 6 It is a schematic diagram of the top view of the structure of the batch test tooling for the performance test of the angular displacement sensor of the utility model without the mounting plate, the central clamping bolt, the surrounding clamping bolts, the groove bottom rubber pad, the central bolt rubber pad and the surrounding bolt rubber pad;

[0022] Figure 7 It is a schematic diagram of the main cross-sectional structure of the batch test tooling for angular displacement sensor performance testing of the utility model when in use;

[0023] Figure 8 It is a schematic diagram of the top view of the structure of the batch testing tooling for angular displacement sensor performance testing of the utility model when in use. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] like Figure 4 , Figure 5 and Figure 6 As shown, the batch test tooling for angular displacement sensor performance test of the utility model comprises a support column 8, a drive seat 7, a drive motor 24, a driving gear 16, a driven gear 19, a mounting plate 6 and a clamping bolt. The drive seat 7 is mounted on the upper part of a plurality of vertical support columns 8, the drive motor 24 is mounted on a motor bracket 25, the motor bracket 25 is mounted on the lower part of a plurality of support columns 8 and is located between the plurality of support columns 8, the upper end of the shaft 23 of the drive motor 24 is connected to the lower end of the vertical shaft sleeve 17, the upper end of the shaft sleeve 17 passes through the corresponding through hole on the drive seat 7 and the lower end of the horizontal driving gear 16 The middle of the lower end of the plurality of transverse driven gears 19 is respectively connected with a plurality of vertical connecting shafts 21, and the connecting shafts 21 are installed in the corresponding through holes on the driving seat 7. The sleeve 17 and the corresponding through hole wall of the driving seat 7, and the connecting shafts 21 and the corresponding through hole wall of the driving seat 7 are respectively connected through bearings 22. The plurality of driven gears 19 are evenly distributed on the outer periphery of the driving gear 16 and are respectively meshed and connected with the driving gear 16. A vertical positioning hole 18 is provided in the middle of the upper part of the driven gear 19, and the hole wall surface of the positioning hole 18 is provided with at least one vertical plane (one in the figure and not marked, with Figure 2 The horizontal mounting plate 6 is mounted on the upper end of the support column 8 and is located above the driving gear 16 and the plurality of driven gears 19. A plurality of mounting recesses 11 are provided on the mounting plate 6. A vertical recess through hole 13 is provided in the middle of the bottom of the mounting recess 11. The plurality of recess through holes 13 are respectively located above the plurality of positioning holes 18. The screw rods of the plurality of vertical clamping bolts are respectively installed in the corresponding screw holes on the mounting plate 6 and are close to the corresponding mounting recesses 11. The nut of each clamping bolt is partially located in the upper area of ​​the corresponding mounting recess 11.

[0026] like Figure 4 , Figure 5 and Figure 6 As shown, the utility model also discloses the following more optimized specific structures:

[0027] In order to reliably clamp multiple angular displacement sensors with fewer clamping bolts, the clamping bolts include a central clamping bolt 14 and multiple peripheral clamping bolts 9. The central clamping bolt 14 is located at the center position between the multiple mounting grooves 11, and the multiple peripheral clamping bolts 9 are respectively located on the outside of the multiple mounting grooves 11, and each peripheral clamping bolt 9 and central clamping bolt 14 are respectively located outside the opposite sides of the corresponding mounting groove 11.

[0028] In order to avoid mutual influence between the driven gears 19 and to realize batch testing as much as possible, there are four driven gears 19, connecting shafts 21, mounting grooves 11 and surrounding clamping bolts 9.

[0029] In order to avoid scratching the flange of the angular displacement sensor during installation, a transverse groove bottom rubber pad 12 is provided at the bottom of each mounting groove 11, and a vertical through hole corresponding to the groove through hole 13 is provided at the center position of the groove bottom rubber pad 12. A transverse center bolt rubber pad 15 is mounted on the screw rod of the center clamping bolt 14, and a transverse surrounding bolt rubber pad 10 is mounted on the screw rod of the surrounding clamping bolts 9.

[0030] In order to facilitate processing and assembly, a drive seat recess 20 is provided on the upper surface of the drive seat 7 , and the driving gear 16 and a plurality of driven gears 19 are all located in the drive seat recess 20 .

[0031] In order to achieve reliable support, there are four support columns 8 arranged in a square.

[0032] Combination Figure 1-Figure 8When in use, the four angular displacement sensors to be tested are respectively placed on the groove bottom rubber pads 12 on the groove bottom of the four mounting grooves 11, the rotating shafts 3 of the four angular displacement sensors respectively pass through the four groove through holes 13, the ends of the four rotating shafts 3 are respectively placed in the four positioning holes 18 and cannot rotate, and then the central clamping bolt 14 and the four surrounding clamping bolts 9 are respectively installed in the corresponding screw holes on the mounting plate 6 and tightened, the four surrounding bolt rubber pads 10 respectively press the edge of one side of the flange 2 of the four angular displacement sensors, and the central bolt rubber pad 15 simultaneously presses the edge of the other side of the flange 2 of the four angular displacement sensors to realize the positioning of the flange 2 and the housing 1 of the four angular displacement sensors (since the rotating shaft 3 and the housing 1 are connected by a bearing, it does not require too much clamping force to realize the positioning of the housing 1, and at the same time realize the function of free rotation of the rotating shaft 3). In this way, the installation of the four angular displacement sensors is realized, and then the test can be started. During the test, the four angular displacement sensors and the drive motor 24 are first connected to an external processor (not shown in the figure, which is a conventional prior art) respectively, and then the drive motor 24 is started to drive the shaft sleeve 17 and the driving gear 16 to rotate synchronously, the driving gear 16 drives the four driven gears 19 to rotate synchronously, and the four driven gears 19 drive the rotating shafts 3 of the four angular displacement sensors to rotate synchronously. The processor monitors the changes in the output signal in real time, which is used as the basis for judging the relevant performance of the sensor, thereby achieving the purpose of synchronously performing performance testing on the four angular displacement sensors.

[0033] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. A batch test tool for angular displacement sensor performance test, comprising a support column, a drive seat and a drive motor, wherein the drive seat is mounted on the upper part of a plurality of vertical support columns, the drive motor is mounted on a motor bracket, and the motor bracket is mounted on the lower part of a plurality of support columns and located between the plurality of support columns, characterized in that: The batch test tooling for angular displacement sensor performance testing also includes a driving gear, a driven gear, a mounting plate and a clamping bolt. The upper end of the shaft of the driving motor is connected to the lower end of the vertical sleeve, and the upper end of the sleeve passes through the corresponding through hole on the driving seat and is connected to the middle of the lower end of the horizontal driving gear. The middle parts of the lower ends of multiple horizontal driven gears are respectively connected to multiple vertical connecting shafts, and the connecting shafts are installed in the corresponding through holes on the driving seat. The sleeve and the corresponding through hole wall of the driving seat, and the connecting shaft and the corresponding through hole wall of the driving seat are respectively connected by bearings. Multiple driven gears are evenly distributed on the periphery of the driving gear and are respectively connected to The driving gear is meshingly connected, a vertical positioning hole is provided in the middle of the upper part of the driven gear, and at least one vertical plane is provided on the hole wall surface of the positioning hole. The horizontal mounting plate is installed on the upper end of the support column and is located above the driving gear and multiple driven gears. Multiple mounting grooves are provided on the mounting plate, and a vertical groove through hole is provided in the middle of the groove bottom of the mounting groove. Multiple groove through holes are respectively located above the multiple positioning holes, and the screw rods of multiple vertical clamping bolts are respectively installed in the corresponding screw holes on the mounting plate and close to the corresponding mounting grooves, and the nut of each clamping bolt is partially located in the upper area of ​​the corresponding mounting groove.

2. The batch test tool for angular displacement sensor performance test according to claim 1, characterized in that: The clamping bolts include a central clamping bolt and multiple peripheral clamping bolts, the central clamping bolt is located at the center position between the multiple mounting grooves, the multiple peripheral clamping bolts are respectively located on the outsides of the multiple mounting grooves, and each of the peripheral clamping bolts and the central clamping bolt are respectively located outside the opposite sides of the corresponding mounting groove.

3. The batch testing tool for angular displacement sensor performance testing according to claim 2, characterized in that: There are four of each of the driven gear, the connecting shaft, the mounting recess and the surrounding clamping bolts.

4. The batch test tool for angular displacement sensor performance test according to claim 2 or 3, characterized in that: The bottom of each mounting trough is provided with a transverse trough bottom rubber pad, the center position of the trough bottom rubber pad is provided with a vertical through hole corresponding to the trough through hole, the screw rod of the central clamping bolt is provided with a transverse central bolt rubber pad, and the screw rod of the surrounding clamping bolt is provided with a transverse surrounding bolt rubber pad.

5. The batch test tool for angular displacement sensor performance test according to claim 1, 2 or 3, characterized in that: A driving seat recess is provided on the driving seat, and the driving gear and a plurality of driven gears are all located in the driving seat recess.

6. The batch test tool for angular displacement sensor performance test according to claim 1, 2 or 3, characterized in that: There are four support columns arranged in a square shape.

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