Microcomputer-controlled high-precision disc spring pressure testing machine

Abstract

The utility model discloses a microcomputer-controlled high-precision disc spring pressure testing machine which comprises a workbench, a lower pressure plate, an upper pressure plate, a displacement measuring scale and a microcomputer. Four vertically-arranged guide columns are fixed to the workbench, the two guide columns are oppositely arranged, an upper cross beam is fixedly installed between the two guide columns, ball screws are installed on the inner sides of the guide columns, a movable cross beam is installed between the two ball screws, and the ball screws can rotate to drive the movable cross beam to move in the vertical direction. The bottom of the lower pressing disc is installed on the table top of the workbench through load sensors, and the number of the load sensors is at least two. The upper pressing disc is fixedly installed on the movable cross beam and located over the lower pressing disc. The displacement measuring scale is vertically installed on the upper pressure plate and the lower pressure plate, and the displacement measuring scale can measure the distance between the upper pressure plate and the lower pressure plate. The load sensor and the displacement measuring scale are both in data connection with the microcomputer so as to realize high-precision measurement test of the disc spring.

Description

Technical Field

[0001] The utility model belongs to the technical field of disc spring pressure testing machines, and particularly relates to a microcomputer-controlled high-precision disc spring pressure testing machine. Background Technique

[0002] The disc spring, also known as the Belleville spring washer, has a conical disc shape. Different from traditional springs, it has special functions. Its main characteristics are large load, short stroke, small required space, convenient combined use, easy maintenance and replacement, and high economic safety. It is suitable for precision heavy machinery with small space and large load. The best range of its compression stroke is between 10% and 75% of its maximum compression stroke.

[0003] Common disc spring testing machines for detecting the performance of disc springs generally use a single sensor and a single displacement ruler. Since the deformation of the disc spring is very small, usually within 1 mm, the existing disc spring pressure testing machines generally have large errors and insufficient measurement accuracy. Content of the Utility Model

[0004] In view of the above deficiencies, the utility model provides a microcomputer-controlled high-precision disc spring pressure testing machine. By arranging at least 2 load sensors at the bottom of the lower pressing plate, and at least 2 displacement measuring rulers at the upper pressing plate and the lower pressing plate, and calculating the average value of the measured data by the microcomputer, the accuracy of the disc spring detection test is improved, and the measurement error is reduced.

[0005] The utility model is realized by the following technical solutions:

[0006] A microcomputer-controlled high-precision disc spring pressure testing machine includes a workbench, a lower pressing plate, an upper pressing plate, a displacement measuring ruler and a microcomputer. Two vertically arranged guide columns are fixed on the workbench. The four guide columns are arranged oppositely, and an upper cross beam is installed and fixed between the four guide columns to play a role in fixing the guide columns and increase the stability of the four guide columns. Ball screw rods are installed inside the guide columns. A moving cross beam is installed between the two ball screw rods. The rotation of the ball screw rods can drive the moving cross beam to move in the vertical direction. The bottom of the lower pressing plate is installed on the tabletop of the workbench through load sensors, and the number of load sensors is at least 2. The upper pressing plate is fixedly installed on the moving cross beam and is located directly above the lower pressing plate. The displacement measuring rulers are vertically installed on the upper pressing plate and the lower pressing plate. There are at least 2 displacement measuring rulers and they are evenly distributed along the circumferential direction of the lower pressing plate. The displacement measuring rulers can measure the distance between the lower pressing plate and the upper pressing plate. The load sensors and the displacement measuring rulers are both connected to the microcomputer for data to achieve high-precision measurement tests on the disc spring.

[0007] Further, the displacement measuring scale includes a measuring rod, a lower fixing plate, an upper fixing plate, a displacement sensor, and a magnetic ring. The measuring rod is vertically arranged, and the bottom of the measuring rod is fixed to the lower pressing plate through the lower fixing plate. The upper fixing plate is fixed to the moving crossbeam. The upper fixing plate is provided with a limiting sliding hole for cooperating with the measuring rod and a fixing groove for accommodating the magnetic ring. The displacement sensor can detect the distance between the magnetic ring and the displacement sensor and transmit the displacement data to the microcomputer to achieve accurate calculation of the disc spring data.

[0008] Further, a coupling is fixedly provided below the moving crossbeam, and the upper pressing plate is fixed to the moving crossbeam through the coupling, which is convenient for disassembling and assembling the upper pressing plate.

[0009] Further, the upper pressing plate has models with various inner diameters. The upper pressing plate is fixed to the coupling through bolts, and upper pressing plates with different specifications are provided to increase the disc spring adaptation range of the high-precision disc spring pressure testing machine.

[0010] Further, a motor for driving the ball screw to rotate is provided inside the workbench to provide power support for the rotation of the ball screw. A speed reducer is also provided between the motor and the ball screw. The motor is signal-connected to the microcomputer to achieve electronic control of the moving state of the upper pressing plate.

[0011] Further, a protective cushion block is fixedly provided on the tabletop of the workbench, and the load sensor is fixedly provided above the protective cushion block to protect the tabletop of the workbench. At the same time, setting the protective cushion block helps the installation of the load sensor.

[0012] Further, the microcomputer can calculate the average value of the data of each load sensor, and the microcomputer can calculate the average value of the data of each displacement measuring scale, so as to quickly and accurately obtain the test data of the disc spring.

[0013] Further, the number of load sensors is 3, and the number of displacement measuring scales is 3.

[0014] Further, a glass door and a door frame are also installed at the front ends of the two guide columns to prevent the disc spring from being damaged and splashing onto the tester when the upper pressing plate presses the disc spring, causing accidental injury and improving the safety of the disc spring test.

[0015] Further, the load sensors are evenly distributed along the circumferential direction of the lower pressing plate, which helps each load sensor to be evenly stressed and improves the pressure detection accuracy of the disc spring.

[0016] The beneficial effects of the present utility model:

[0017] 1. By arranging at least 2 load sensors at the bottom of the lower pressing plate, arranging at least 2 displacement measuring scales at the upper pressing plate and the lower pressing plate, and calculating the average value of the measurement data by the microcomputer, the accuracy of the disc spring detection test is improved, and the measurement error is reduced;

[0018] 2. Two high-precision ball screws are adopted to drive the upper platen to move in the vertical direction through the cross beam, so as to improve the stability of the upper platen during operation.

[0019] 3. A glass door and a door frame are arranged at the front end of the guide post. During the test, it is convenient for the staff to observe the test state of the disc spring and can also protect the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A connection schematic diagram for illustrating a schematic implementation manner of a microcomputer-controlled high-precision disc spring pressure testing machine in the present invention;

[0021] Figure 2 A structural schematic diagram for illustrating a schematic implementation manner of a microcomputer-controlled high-precision disc spring pressure testing machine in the present invention;

[0022] Figure 3 For illustration Figure 2 The partial enlarged schematic diagram at position A in

[0023] Figure 4 A cross-sectional view for illustrating a schematic implementation manner of a microcomputer-controlled high-precision disc spring pressure testing machine in the present invention.

[0024] List of components and reference numerals:

[0025] 1. Workbench; 11. Guide post; 12. Upper cross beam; 13. Ball screw; 14. Moving cross beam; 15. Coupling; 16. Door frame; 2. Lower platen; 21. Load sensor; 22. Protection pad; 3. Upper platen; 4. Displacement measuring ruler; 41. Measuring rod; 42. Lower fixing plate; 43. Upper fixing plate; 44. Displacement sensor; 45. Magnetic ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that the orientation terms such as left, right, up, down, front, and back in the embodiments of the present invention are only relative concepts to each other or are referenced based on the normal use state of the product, that is, the traveling direction of the product, and should not be considered as restrictive.

[0028] In addition, it should be noted that the dynamic terms such as "relative movement" mentioned in the embodiments of the present utility model not only refer to the change in position, but also include movements such as rotation and rolling where there is no relative change in position, but the state changes.

[0029] Finally, it should be noted that when a component is referred to as being "located" or "disposed on" another component, it can be on the other component or there may be an intermediate component present at the same time. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present at the same time.

[0030] As Figures 1 to 4 shown, a microcomputer-controlled high-precision disc spring pressure testing machine includes a workbench 1, a lower platen 2, an upper platen 3, a displacement measuring ruler 4, and a microcomputer. Four vertically arranged guide columns 11 are fixed on the workbench 1. The four guide columns 11 are oppositely arranged, and an upper crossbeam 12 is installed and fixed between the four guide columns 11 to play a role in fixing the guide columns 11 and increasing the stability of the four guide columns 11. Ball screw rods 13 are installed inside the guide columns 11. A moving crossbeam 14 is installed between the two ball screw rods 13. The rotation of the ball screw rods 13 can drive the moving crossbeam 14 to move in the vertical direction. The bottom of the lower platen 2 is installed on the tabletop of the workbench 1 through load sensors 21, and the number of load sensors 21 is at least 2. The upper platen 3 is fixedly installed on the moving crossbeam 14 and is located directly above the lower platen 2. The displacement measuring ruler 4 is vertically installed on the upper platen 3 and the lower platen 2. There are at least 2 displacement measuring rulers 4 and they are evenly distributed along the circumferential direction of the lower platen 2. The displacement measuring ruler 4 can measure the distance between the lower platen 2 and the upper platen 3. Both the load sensors 21 and the displacement measuring ruler 4 are connected to the microcomputer for data to achieve high-precision measurement tests on the disc spring.

[0031] In one embodiment, first, the staff opens the glass door and places the disc spring specimen on the surface of the lower platen 2 on the workbench 1. Then, the glass door is closed, and the disc spring pressure testing machine is started through the microcomputer. The motor drives the two ball screw rods 13 to rotate through the reducer, and the moving crossbeam 14 located between the two ball screw rods 13 drives the upper platen to move vertically downward. After the upper platen presses on the disc spring, the disc spring deforms, and the load sensors 21 transmit the pressure values to the microcomputer, and the microcomputer automatically calculates the average value of the pressure data of each load sensor 21; synchronously, the displacement measuring ruler 4 transmits the deformation distance data of the disc spring to the microcomputer, and the microcomputer automatically calculates the average value of the distance data of each displacement measuring ruler 4. Thus, high-precision test measurements of the disc spring are achieved.

[0032] In one embodiment, the microcomputer obtains the average value of the distance data of each load sensor 21 by accumulating and dividing by the number of load sensors 21 used. The method of averaging the displacement measuring ruler 4 is the same. The method of the microcomputer obtaining the average value of the numerical value belongs to the prior art and will not be elaborated here.

[0033] Preferably, the displacement measuring ruler 4 includes a measuring rod 41, a lower fixing plate 42, an upper fixing plate 43, a displacement sensor 44 and a magnetic ring 45. The measuring rod 41 is vertically arranged. The bottom of the measuring rod 41 is fixed to the lower pressing plate 2 through the lower fixing plate 42. The upper fixing plate 43 is fixed to the moving cross beam 14. The upper fixing plate 43 is provided with a limiting sliding hole matching with the measuring rod 41 and a fixing groove for accommodating the magnetic ring 45. The displacement sensor 44 can detect the distance between the magnetic ring 45 and the displacement sensor 44 and transmit the displacement data to the microcomputer to realize the accurate calculation of the disc spring data.

[0034] In one embodiment, when the moving cross beam 14 drives the upper pressing plate to move vertically downward, the position of the measuring rod 41 remains unchanged. The upper fixing plate 43 moves vertically downward with the moving cross beam 14. The upper fixing plate 43 drives the magnetic ring 45 to move vertically downward relative to the measuring rod 41. The magnetic ring 45 moves vertically downward along the extending direction of the measuring rod 41. The displacement sensor 44 fixed to the bottom of the measuring rod 41 can detect the distance between it and the magnetic ring 45, and then judge the descending distance of the upper pressing plate 3, so as to realize the distance detection of the disc spring deformation amount.

[0035] Preferably, a coupling 15 is fixedly arranged below the moving cross beam 14. The upper pressing plate 3 is fixed to the moving cross beam 14 through the coupling 15, which is convenient for disassembling and assembling the upper pressing plate 3.

[0036] Preferably, the upper pressing plate 3 has models with various inner diameters. The upper pressing plate 3 is fixed to the coupling 15 through bolts. Different specifications of the upper pressing plate 3 are set to increase the disc spring adaptation range of the high-precision disc spring pressure testing machine.

[0037] In one embodiment, after replacing the upper pressing plate 3, it is necessary to calibrate the data of the upper pressing plate 3 to ensure the high-precision measurement of the disc spring subsequently. Each time the upper pressing plate 3 is replaced, it is necessary to calibrate the distance data of the upper pressing plate 3.

[0038] Preferably, a motor for driving the ball screw 13 to rotate is arranged inside the workbench 1 to realize the power support for the rotation of the ball screw 13. A speed reducer is also arranged between the motor and the ball screw 13. The motor is signal-connected to the microcomputer to realize the electronic control of the moving state of the upper pressing plate 3.

[0039] Preferably, a protective cushion block 22 is fixedly arranged on the tabletop of the workbench 1, and the load sensor 21 is fixedly arranged above the protective cushion block 22 to protect the tabletop of the workbench 1. At the same time, the arrangement of the protective cushion block 22 helps the installation of the load sensor 21.

[0040] Preferably, the microcomputer can calculate the average value of the data of each load sensor 21, and the microcomputer can calculate the average value of the data of each displacement measuring scale 4, so as to quickly and accurately obtain the test data of the disc spring.

[0041] Preferably, the number of the load sensors 21 is 3, and the number of the displacement measuring scales 4 is 3.

[0042] Preferably, a glass door and a door frame 16 are further installed at the front ends of the two guide posts 11 to prevent the disc spring from being damaged and splashing onto the tester when the upper pressing plate 3 presses the disc spring, causing accidental injury and improving the safety of the disc spring test.

[0043] Preferably, the load sensors 21 are evenly distributed along the circumferential direction of the lower pressing plate 2, which helps each load sensor 21 to be evenly stressed and improves the pressure detection accuracy of the disc spring.

[0044] When the above-mentioned microcomputer-controlled high-precision disc spring pressure testing machine is adopted, at least 2 load sensors 21 are arranged at the bottom of the lower pressing plate 2, at least 2 displacement measuring scales 4 are arranged at the upper pressing plate 3 and the lower pressing plate 2, and the microcomputer calculates the average value of the measurement data, which improves the accuracy of the disc spring detection test and reduces the measurement error; two high-precision ball screws 13 are adopted to drive the upper pressing plate 3 to move in the vertical direction through the cross beam to improve the stability of the upper pressing plate 3 during operation; a glass door and a door frame 16 are arranged at the front end of the guide post 11, which can not only facilitate the staff to observe the test state of the disc spring during the test, but also protect the staff.

[0045] The above description is only for the embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A microcomputer-controlled high-precision disc spring pressure testing machine, characterized in that, Comprising: A workbench, on which four vertically arranged guide posts are fixed. The four guide posts are oppositely arranged, and an upper cross beam is installed and fixed between the four guide posts. Ball screws are installed inside the guide posts. A moving cross beam is installed between the two ball screws. Rotation of the ball screws can drive the moving cross beam to move in the vertical direction; A lower pressing plate, the bottom of which is installed on the tabletop of the workbench through a load sensor, and the number of the load sensors is at least 2; An upper pressing plate, which is fixedly installed on the moving cross beam and is located directly above the lower pressing plate; A displacement measuring ruler, which is vertically installed on the upper pressing plate and the lower pressing plate. There are at least 2 displacement measuring rulers and they are evenly distributed along the circumferential direction of the lower pressing plate. The displacement measuring ruler can measure the distance between the lower pressing plate and the upper pressing plate; A microcomputer, to which both the load sensor and the displacement measuring ruler are connected for data.

2. The high-precision disc spring pressure testing machine controlled by a microcomputer according to claim 1, characterized in that The displacement measuring ruler includes a measuring rod, a lower fixing plate, an upper fixing plate, a displacement sensor and a magnetic ring. The measuring rod is vertically arranged. The bottom of the measuring rod is fixed to the lower pressing plate through the lower fixing plate. The upper fixing plate is fixed to the moving cross beam. The upper fixing plate is provided with a limiting sliding hole matching the measuring rod and a fixing groove for accommodating the magnetic ring. The displacement sensor can detect the distance between the magnetic ring and the displacement sensor and transmit displacement data to the microcomputer.

3. A microcomputer-controlled high-precision disc spring pressure testing machine according to claim 1, characterized in that, A coupling is fixedly provided below the moving cross beam, and the upper pressing plate is fixed to the moving cross beam through the coupling.

4. A microcomputer-controlled high-precision disc spring pressure testing machine according to claim 3, characterized in that, The upper pressing plate has models with various inner diameters, and the upper pressing plate is fixed to the coupling through bolts.

5. A microcomputer-controlled high-precision disc spring pressure testing machine according to claim 1, characterized in that, A motor for driving the ball screw to rotate is provided inside the workbench, and a speed reducer is further provided between the motor and the ball screw. The motor is signal-connected to the microcomputer.

6. A microcomputer-controlled high-precision disc spring pressure testing machine according to claim 1, characterized in that, Protective pads are fixedly provided on the tabletop of the workbench, and the load sensors are fixedly arranged above the protective pads.

7. A microcomputer-controlled high-precision disc spring pressure testing machine according to claim 1, characterized in that, The microcomputer can calculate the average value of the data of each load sensor, and the microcomputer can calculate the average value of the data of each displacement measuring ruler.

8. The high-precision disc spring pressure testing machine controlled by a microcomputer according to claim 1, characterized in that, The number of the load sensors is 3, and the number of the displacement measuring rulers is 3.

9. A microcomputer-controlled high-precision disc spring pressure testing machine according to claim 1, characterized in that, Glass doors and door frames are further installed at the front ends of the two guide posts.

10. A microcomputer-controlled high-precision disc spring pressure testing machine according to claim 1, characterized in that, The load sensors are evenly distributed along the circumferential direction of the lower pressing plate.

Images