Rotor crushing force measuring device

Abstract

The utility model provides a device for measuring crushing force of a rotor. The device comprises a bottom plate; the servo motor is arranged on the bottom plate; the sensor is arranged on the bottom plate; the positioning assembly is located on the side, facing the servo motor, of the sensor and used for fixing a rotor; the sliding rail assembly comprises a sliding rail and a sliding seat capable of sliding on the sliding rail; a lead screw assembly including a lead screw; the diaphragm coupling is used for connecting a motor shaft of a servo motor with one end of the lead screw; the lead screw sliding block is arranged on the sliding seat; and a pressing block. The servo motor drives the lead screw to rotate, so that the lead screw sliding block moves along the sliding rail, and then the lead screw sliding block gets close to or away from the sensor. And the pressing block is used for applying pressure to a preset part of the rotor. Therefore, the crushing force of the rotor of the automobile actuator can be measured.

Description

Technical field

[0001] The utility model relates to the field of measurement, in particular to a device for measuring the crushing force of a rotor of an automobile actuator. [Background Technology]

[0002] Automotive actuators are critical components, primarily composed of a motor, gear train, drive circuitry, and outer casing. These components work together to ensure stable and reliable operation. However, during actual design, production, and application, motor rotor cracking can occur, impacting motor performance and even causing bore scavenging (interference between the rotor and stator).

[0003] In order to prevent this problem from occurring, experiments are needed to simulate the stress conditions of the rotor under extreme conditions to determine the critical force value at which the rotor breaks (i.e., the magnitude of the rotor's crushing force) and ensure the performance and reliability of the automotive actuator. [Summary of the invention]

[0004] One of the purposes of the present invention is to provide a device for measuring the crushing force of a rotor of an automobile actuator, which can measure the critical force value at which the rotor breaks (ie, the magnitude of the crushing force of the rotor).

[0005] To achieve the above-mentioned purpose, according to one aspect of the present invention, the present invention provides a device for measuring the crushing force of a rotor, which comprises: a base plate; a servo motor arranged on the base plate, which comprises a motor shaft; a sensor arranged on the base plate, wherein the motor shaft of the servo motor faces the sensor; a positioning assembly located on the side of the sensor facing the servo motor, wherein the positioning assembly is used to fix the rotor; a slide rail assembly, which comprises a slide rail extending from the servo motor toward the sensor and fixed to the base plate, and a slide seat capable of sliding on the slide rail; a screw assembly, which comprises a guide rail extending from the servo motor toward the sensor and fixed to the base plate, and a slide seat capable of sliding on the slide rail; and a guide screw assembly, which comprises a guide rail extending from the servo motor toward the sensor and fixed to the base plate. A lead screw extending toward the sensor; a diaphragm coupling for connecting the motor shaft and one end of the lead screw; a lead screw slider located between the servo motor and the sensor and arranged on the slide, comprising a threaded hole, the other end of the lead screw passing through the threaded hole, the servo motor drives the lead screw to rotate, the lead screw cooperates with the threaded hole to make the lead screw slider move along the slide rail, thereby making the lead screw slider approach or move away from the sensor; a clamping block arranged on the side of the lead screw slider close to the sensor, wherein the clamping block is used to apply pressure to a predetermined portion of the rotor.

[0006] In one embodiment, when conducting a test, the rotor is fixed to the positioning assembly, the servo motor drives the lead screw to rotate, and the lead screw cooperates with the threaded hole so that the lead screw slider drives the clamping block to slide toward the rotor fixed on the positioning assembly until the clamping block contacts a predetermined portion of the rotor and applies pressure to the predetermined portion of the rotor, and the pressure is transmitted to the sensor through the positioning assembly, so that the sensor measures the pressure applied by the clamping block to the predetermined portion of the rotor.

[0007] In one embodiment, the positioning assembly is composed of a plurality of first positioning blocks, second positioning blocks, third positioning blocks, fourth positioning blocks, fifth positioning blocks, and sixth positioning blocks. Each positioning block includes a mounting portion for fixing the positioning block and a positioning portion formed on the mounting portion. Positioning grooves are formed on the positioning portions of the second positioning block, the third positioning block, the fifth positioning block, and the sixth positioning block. The positioning portion of the first positioning block is used to fix the rotor from the inside of the rotor, and the positioning groove of the third positioning block is used to fix the spring piece of the rotor; the positioning portions of the second positioning block, the fourth positioning block, the fifth positioning block, and the sixth positioning block are used to fix the rotor from the outside of the rotor.

[0008] The pressing block is one of the first pressing block, the second pressing block, the third pressing block, and the fourth pressing block, and each pressing block includes a mounting portion for fixing the pressing block and a pressing portion formed on the mounting portion.

[0009] The end of the pressing part of the first pressing block fits the cross-section of the spring base of the rotor, and is used to press the spring from the inside out. The end of the pressing part of the second pressing block fits the external cross-section of the magnetic steel of the rotor, and is used to press the magnetic steel from the outside to the inside; the end of the pressing part of the third pressing block fits the internal cross-section of the magnetic steel of the rotor, and is used to press the magnetic steel from the inside to the outside; the end of the pressing part of the fourth pressing block fits the cross-section of the spring, and is used to press the spring into the interior of the rotor.

[0010] In one embodiment, when performing a compression test on the spring piece from the inside to the outside, the first clamping block is used, and the fourth positioning block, the fifth positioning block and the sixth positioning block are used as the positioning assembly; when performing a test on the spring piece being pressed into the interior of the rotor, the fourth clamping block is used, and the third positioning block, the fourth positioning block and the sixth positioning block are used as the positioning assembly, wherein the spring piece of the rotor is placed in the positioning groove of the third positioning block; when performing a compression test on the magnetic steel from the outside to the inside, the second positioning block and the fifth positioning block are used as the positioning assembly, and the third clamping block is used; when performing a compression test on the magnetic steel from the inside to the outside, the second positioning block and the fifth positioning block are used as the positioning assembly, and the second clamping block is used.

[0011] Compared with the prior art, the present invention applies pressure to a predetermined portion of the rotor through a compression block, and the sensor measures the pressure applied by the compression block to the predetermined portion of the rotor, thereby measuring the magnitude of the rotor crushing force.

Brief Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0013] Figure 1 This is a three-dimensional structural diagram of a rotor crushing force measuring device in one embodiment of the present invention;

[0014] Figure 2 for Figure 1 A three-dimensional structural diagram of multiple positioning blocks in the measuring device;

[0015] Figure 3 for Figure 1 A three-dimensional structural diagram of multiple compression blocks in the measuring device;

[0016] Figure 4 for Figure 1 A three-dimensional structural diagram of the servo motor, motor fixing block, lead screw slider, slide rail assembly, first cushion block, second cushion block and first limit block;

[0017] Figure 5 Schematic diagram of the test results when the rotor crushing force test is performed using the measuring device. [Specific implementation method]

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] The term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to separate or selective embodiments that are mutually exclusive of other embodiments. Unless otherwise specified, the terms "connected," "connected," and "connected" herein, indicating electrical connection, refer to direct or indirect electrical connection.

[0020] In this utility model, unless otherwise specified or limited, terms such as "connected," "connect," and "coupled" should be understood in a broad sense; for example, they may refer to direct connection or indirect connection through an intermediary, such as an electronic component or functional circuit. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0021] The utility model provides a device for measuring the crushing force of a rotor of an automobile actuator. By applying pressure to a predetermined portion of the rotor through a compression block, the sensor measures the pressure applied by the compression block on the predetermined portion of the rotor, thereby measuring the magnitude of the rotor crushing force (i.e., the critical force value at which the rotor breaks). Based on the measured value, it is determined whether the rotor crushing force meets the design requirements, thereby effectively avoiding the risk of rotor breakage in actual applications.

[0022] Figure 1 This is a three-dimensional structural diagram of the rotor crushing force measuring device in one embodiment of the present invention. Figure 1 As shown, the measuring device includes: a base plate 1, a servo motor 28 arranged on the base plate 1, a sensor 30 arranged on the base plate 1, a positioning assembly located on the side of the sensor 30 facing the servo motor 28, a slide rail assembly 16, a screw assembly 14, a diaphragm coupling 29, a screw slider 20, and a clamping block arranged on the side of the screw slider 20 close to the sensor 30.

[0023] like Figure 4 and Figure 1 As shown, the servo motor 28 includes a motor shaft 281; the motor shaft 281 of the servo motor 28 faces the sensor 30. The slide rail assembly 16 includes a slide rail 161 extending from the servo motor 28 toward the sensor and fixed on the base plate 1, and a slide 162 that can slide on the slide rail 161. The screw assembly 14 includes a screw extending from the servo motor 28 toward the sensor 30. The diaphragm coupling 29 is used to connect the motor shaft 281 and one end of the screw. The screw slider 20 is located between the servo motor 28 and the sensor 30 and is arranged on the slide 162. The screw slider 20 includes a threaded hole 201, and the other end of the screw passes through the threaded hole 201. The servo motor 28 drives the screw to rotate, and the screw cooperates with the threaded hole 201 to make the screw slider 20 move along the slide rail 161, thereby making the screw slider 20 approach or move away from the sensor 30.

[0024] The positioning assembly is used to fix the rotor. The clamping block is used to apply pressure to a predetermined portion of the rotor. During testing, the rotor is fixed to the positioning assembly, and the servo motor 28 drives the lead screw to rotate. The lead screw cooperates with the threaded hole 201 so that the lead screw slider 20 drives the clamping block to slide toward the rotor fixed to the positioning assembly until the clamping block contacts the predetermined portion of the rotor and applies pressure to the predetermined portion of the rotor. The pressure is transmitted to the sensor 30 through the positioning assembly, so that the sensor 30 measures the pressure applied by the clamping block to the predetermined portion of the rotor.

[0025] like Figure 2 As shown, the positioning assembly is composed of a plurality of the following: a first positioning block 4, a second positioning block 6, a third positioning block 7, a fourth positioning block 8, a fifth positioning block 9, and a sixth positioning block 11. Each positioning block 4, 6, 7, 8, 9, 11 includes a mounting portion 41, 61, 71, 81, 91, 111 for securing the positioning block, and a positioning portion 42, 62, 72, 82, 92, 112 formed on the mounting portion. Positioning grooves are formed on the positioning portions of the second positioning block 6, the third positioning block 7, the fifth positioning block 9, and the sixth positioning block 11. The positioning portion of the first positioning block 4 is used to secure the rotor from the inside. The positioning groove of the third positioning block 7 is used to secure the rotor's spring clip. The positioning portions of the second positioning block 6, the fourth positioning block 8, the fifth positioning block 9, and the sixth positioning block 11 are used to secure the rotor from the outside.

[0026] like Figure 3 As shown, the clamping block is one of the first clamping block 10, the second clamping block 17, the third clamping block 18, and the fourth clamping block 19. Each clamping block 10, 17, 18, 19 includes a mounting portion 101, 171, 181, 191 for fixing the clamping block and a clamping portion 102, 172, 182, 192 formed on the mounting portion. The end of the clamping portion 102 of the first clamping block 10 fits the cross-section of the spring base of the rotor, and is used to crush the spring from the inside out. The end of the clamping portion 172 of the second clamping block 17 fits the outer cross-section of the magnetic steel of the rotor, and is used to crush the magnetic steel from the outside in. The end of the clamping portion 182 of the third clamping block 18 fits the inner cross-section of the magnetic steel of the rotor, and is used to crush the magnetic steel from the inside out. The end of the clamping portion 192 of the fourth clamping block 19 fits the cross-section of the spring, and is used to press the spring into the interior of the rotor.

[0027] When performing a compression test on the spring fragment from the inside out, the first clamping block 10 is used, and the fourth positioning block 8, the fifth positioning block 9, and the sixth positioning block 11 are used as the positioning assembly. When performing a test on the spring fragment being pressed into the interior of the rotor, the fourth clamping block 19 is used, and the third positioning block 7, the fourth positioning block 8, and the sixth positioning block 11 are used as the positioning assembly, wherein the spring fragment of the rotor is placed in the positioning groove of the third positioning block 7. When performing a compression test on the magnetic steel from the outside in, the second positioning block 6 and the fifth positioning block 9 are used as the positioning assembly, and the third clamping block 18 is used. When performing a compression test on the magnetic steel from the inside out, the second positioning block 6 and the fifth positioning block 9 are used as the positioning assembly, and the second clamping block 17 is used.

[0028] like Figure 1 and 4 As shown, the measuring device further includes: a motor fixing block 12 mounted on the base plate 1. The motor fixing block 12 includes a motor shaft hole 121, and the mounting portion of the servo motor 28 is mounted on the motor fixing block 12, and the motor shaft passes through the motor shaft hole 121.

[0029] like Figure 1 As shown, the measuring device further includes: handles 23 located on both sides of the base plate; a reference protection cover 22 provided on the base plate; and a first limit block 13 provided above the motor fixing block 12. The first limit block 13 is used to limit the diaphragm coupling 29.

[0030] like Figure 1 As shown, the measuring device further includes: a fourth pad 34, wherein the pressing block is mounted on the lead screw slider 20 via the fourth pad 34. Of course, in other embodiments, the fourth pad 34 can be integrated with the lead screw slider 20, or the pressing block can be directly mounted on the lead screw slider 20.

[0031] like Figure 1 As shown, the measuring device further comprises: a support base 24 fixed on the base plate 1 . The sensor 30 is mounted on a side of the support base 24 facing the servo motor 28 .

[0032] like Figure 4 As shown, the measuring device further includes a limit screw 15 mounted on the lead screw slider 20. The lead screw slider 20 is formed with a mounting hole 202, through which the limit screw 15 is mounted. The limit screw 15 is used to limit the minimum distance between the lead screw slider 20 and the motor fixing block 12, and also to limit the minimum distance between the lead screw slider 20 and the connecting plate 21.

[0033] like Figure 1As shown, the measuring device further includes: a connecting plate 21 arranged on the base plate 1 , wherein one or more positioning blocks of the positioning assembly are mounted on the connecting plate 21 .

[0034] The measuring device further includes a second limit block 32 mounted on a side of the support base 24 facing the servo motor 28. The second limit block 32 is located below the sensor 30 and limits the sensor.

[0035] The measuring device further includes: a first spacer 2 mounted on the base plate 1; a third spacer 31 mounted on the base plate; and a second spacer 5 mounted on the first spacer 2. The connecting plate 21 is connected to the base plate 1 via the first spacer 2 and the third spacer 31. The first spacer 2, the second spacer 5, and the third spacer 31 can be installed together with the base plate or replaced with other spacers, as long as the connecting plate 21 can be set to a predetermined height.

[0036] The measuring device also includes a small signal transmitter connected to the sensor 30. The small signal transmitter is used to amplify, filter, modulate, and process the signal (e.g., analog signal) collected by the sensor, and upload the processed data to a host computer. The host computer can be a computer or controller that is responsible for receiving, parsing, and processing the sensor data. The data is then displayed in an easy-to-read manner through a connected display screen. These data may include real-time displacement values, pressure values, charts, or other relevant parameters.

[0037] Specifically, in order to ensure the accuracy of the measurement results, the measuring device is placed in a horizontal position, and the sensor is connected to the host computer through a small signal transmitter so that the collected data can be transmitted and displayed on the screen of the host computer. Before taking measurements, the corresponding positioning blocks and clamping blocks are correctly installed according to different test requirements. In order to ensure the accuracy of the measurement results, the shrapnel or magnet of the rotor should maintain the same horizontal position as the measuring device. During the crushing force test of the shrapnel or magnet of the rotor, the operator places the shrapnel or magnet of the rotor into the positioning groove of the positioning assembly. The clamping block in the measuring device is fixed to the screw slider 20 through a connecting plate to ensure that the clamping block can move along a fixed path. The operator controls the clamping block through the host computer to move forward until it contacts the shrapnel or magnet of the rotor to be measured, and then falls after the pressure reaches a peak. At the same time, the sensor and the small signal transmitter feed back the measured pressure value to the host computer and display it. Figure 5 Schematic diagram of the test results when the rotor crushing force test is performed using the measuring device.

[0038] When the test is carried out, once the measuring device is successfully installed, the rotor to be tested is placed in the measuring device, and the measurement results can be observed on the display screen of the upper computer. These results can help understand the stress of the magnetic steel or the elastic sheet of the rotor under extreme conditions, and support further analysis and decision. By using the measuring device of the application, the operator can easily and accurately measure the stress of the elastic sheet or the magnetic steel of the rotor under extreme conditions.

[0039] As shown in Figure 1 and 4 The measuring device further comprises a locking handle 3. The first positioning block 4 is installed on the second pad 5 through the locking handle 3.

[0040] It should be noted that, Figure 1 The second positioning block 6, the third positioning block 7, the fourth positioning block 8, the fifth positioning block 9 and the sixth positioning block 11 in the second pad 5 are idle on one side of the bottom plate 1. When the test is carried out, one or more of the second positioning block 6, the third positioning block 7, the fourth positioning block 8, the fifth positioning block 9 and the sixth positioning block 11 can be selected and installed on the specified position of the connecting plate 21 to complete the subsequent test work. Figure 1 The first positioning block 4 in the second pad 5 has been installed on the second pad 5. When some tests are carried out, the first positioning block 4 can also be removed. Figure 1 The first pressing block 10, the second pressing block 17, the third pressing block 18 and the fourth pressing block 19 in the second pad 5 are idle on one side of the bottom plate 1. When the test is carried out, one of the first pressing block 10, the second pressing block 17, the third pressing block 18 and the fourth pressing block 19 can be selected and installed on the screw slide 20 to complete the subsequent test work.

[0041] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine different embodiments or examples described in the present application.

[0042] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. The person skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present application.

Claims

1. A device for measuring the crushing force of a rotor, characterized in that: It includes: base plate; A servo motor is provided on the base plate, comprising a motor shaft; a sensor disposed on the base plate, wherein the motor shaft of the servo motor faces the sensor; a positioning assembly located on a side of the sensor facing the servo motor, wherein the positioning assembly is used to fix the rotor; a slide rail assembly comprising a slide rail extending from the servo motor toward the sensor and fixed to the base plate, and a slide seat capable of sliding on the slide rail; a leadscrew assembly comprising a leadscrew extending from the servo motor toward the sensor; a diaphragm coupling, used to connect the motor shaft and one end of the lead screw; A lead screw slider is located between the servo motor and the sensor and is disposed on the slide, and includes a threaded hole. The other end of the lead screw passes through the threaded hole. The servo motor drives the lead screw to rotate. The lead screw cooperates with the threaded hole to move the lead screw slider along the slide rail, thereby causing the lead screw slider to approach or move away from the sensor. A pressing block is provided on a side of the lead screw slider close to the sensor, wherein the pressing block is used to apply pressure to a predetermined portion of the rotor.

2. The measuring device according to claim 1, characterized in that It also includes: The motor fixing block installed on the bottom plate includes a motor shaft hole. The mounting portion of the servo motor is installed on the motor fixing block, and the motor shaft passes through the motor shaft hole.

3. The measuring device according to claim 2, characterized in that It also includes: handles located on both sides of the base plate; A reference protection cover is provided on the bottom plate, A first limiting block is provided above the motor fixing block, and limits the diaphragm coupling.

4. The measuring device according to claim 1, characterized in that It also includes: a fourth pad, The pressing block is mounted on the lead screw slider via a fourth pad.

5. The measuring device according to claim 2, characterized in that It also includes: a support base fixed on the base plate, wherein the sensor is mounted on a side of the support base facing the servo motor; A small signal transmitter connected to the sensor, which is used to amplify, filter and modulate the signal collected by the sensor; a connecting plate disposed on the base plate, wherein one or more positioning blocks in the positioning assembly are mounted on the connecting plate; The limiting screw installed on the screw slider is used to limit the minimum distance between the screw slider and the motor fixing block, and / or to limit the minimum distance between the screw slider and the connecting plate.

6. The measuring device according to claim 5, characterized in that It also includes: a second limiting block installed on a side of the support base facing the servo motor, the second limiting block being located below the sensor and limiting the sensor; a first spacer mounted on the base plate; a third spacer mounted on the base plate; The connecting plate is connected to the bottom plate through a first pad and a third pad.

7. The measuring device according to claim 1, characterized in that During the test, the rotor is fixed on the positioning assembly, and the servo motor drives the lead screw to rotate. The lead screw cooperates with the threaded hole so that the lead screw slider drives the clamping block to slide toward the rotor fixed on the positioning assembly until the clamping block contacts the predetermined position of the rotor and applies pressure to the predetermined position of the rotor. The pressure is transmitted to the sensor through the positioning assembly, so that the sensor measures the pressure applied by the clamping block to the predetermined position of the rotor.

8. The measuring device according to claim 7, characterized in that The positioning assembly is composed of a plurality of the first positioning block, the second positioning block, the third positioning block, the fourth positioning block, the fifth positioning block, and the sixth positioning block. Each positioning block includes a mounting portion for fixing the positioning block and a positioning portion formed on the mounting portion. Positioning grooves are formed on the positioning portions of the second positioning block, the third positioning block, the fifth positioning block, and the sixth positioning block. The positioning portion of the first positioning block is used to fix the rotor from inside the rotor. The third positioning groove is used to fix the spring piece of the rotor; The positioning parts of the second positioning block, the fourth positioning block, the fifth positioning block and the sixth positioning block are used to fix the rotor from the outside of the rotor. The pressing block is one of the first pressing block, the second pressing block, the third pressing block, and the fourth pressing block, and each pressing block includes a mounting portion for fixing the pressing block and a pressing portion formed on the mounting portion. The end of the pressing portion of the first pressing block fits the cross section of the spring plate base of the rotor, and is used to press the spring plate from the inside out. The end of the pressing portion of the second pressing block is adapted to the outer cross-section of the rotor's magnetic steel and is used to crush the magnetic steel from the outside to the inside; The end of the pressing portion of the third pressing block is adapted to the internal cross-section of the rotor's magnetic steel and is used to crush the magnetic steel from the inside out; The end of the pressing portion of the fourth pressing block is adapted to the cross-sectional size of the spring sheet, so as to press the spring sheet into the interior of the rotor.

9. The measuring device according to claim 8, characterized in that When performing a compression test on the shrapnel from the inside out, the first pressing block is used, and the fourth positioning block, the fifth positioning block and the sixth positioning block are used as the positioning assembly; When testing the spring piece pressed into the interior of the rotor, a fourth pressing block is used, and a third positioning block, a fourth positioning block, and a sixth positioning block are used as the positioning assembly, wherein the spring piece of the rotor is placed in the positioning groove of the third positioning block; When performing a magnetic steel compression test from the outside to the inside, the second positioning block and the fifth positioning block are used as the positioning assembly, and the third pressing block is used; When performing a magnetic steel crushing test from the inside out, the second positioning block and the fifth positioning block are used as the positioning components, and the second pressing block is used.

10. The measuring device according to claim 8, characterized in that It also includes: a first spacer mounted on the base plate; a second spacer mounted on the first spacer; Lock the handle; The first positioning block is installed on the second cushion block through the locking handle.

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