Lead screw vibration performance testing machine

Abstract

The utility model relates to testing equipment, and particularly discloses a screw rod vibration performance testing machine. The lead screw vibration performance testing machine comprises a test bench, a clamping module, a pre-tightening module, a driving module and a detection module, wherein the clamping module comprises a screw clamping assembly and a nut clamping assembly; the screw clamping assembly comprises a front mounting seat and a coupler, the nut clamping assembly comprises a rear mounting seat, a containing hole is formed in the rear mounting seat, and a nut limiting unit is arranged at the opening end of the containing hole; the pre-tightening module comprises a loading unit and a sliding loading seat, the loading unit is connected with the sliding loading seat, and the nut clamping assembly is connected with the sliding loading seat; the driving module is connected with the front mounting seat, the detection module is arranged on the rear mounting seat, and the screw clamping assembly and the nut clamping assembly are oppositely arranged left and right. The lead screw vibration performance testing machine has the advantages of being simple in structure, convenient to install and reliable in testing.

Description

Technical Field

[0001] The utility model relates to a test device, in particular to a screw vibration performance testing machine. Background Art

[0002] A screw is a mechanical transmission mechanism that can convert between rotary motion and linear motion. As Figure 1 shown, it usually includes a screw rod 11 and a nut 12, and has the characteristics of high precision, reversibility, and high efficiency. It is widely used in various industrial equipment and precision instruments. There will inevitably be a certain degree of vibration when the screw is transmitting power, and the degree of vibration will directly interfere with the normal operation of the equipment and also have a certain impact on the transmission accuracy.

[0003] Therefore, it is necessary to test and detect the vibration performance of the screw to obtain accurate and reliable vibration data, providing a reliable guarantee for product design and performance research. For the vibration performance test of the screw, there is currently a lack of mature test equipment on the market for selection. Therefore, it is necessary to design a new testing machine to meet the testing requirements of the screw. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a screw vibration performance testing machine, which has the advantages of simple structure, convenient installation, and reliable test.

[0005] To solve the above technical problems, the technical solution provided by the utility model is as follows: A screw vibration performance testing machine, at least including:

[0006] A test bench;

[0007] A clamping module, the clamping module includes a screw rod clamping component and a nut clamping component;

[0008] The screw rod clamping component includes a front mounting seat and a coupling, and one end of the coupling is detachably connected to the front mounting seat;

[0009] The nut clamping component includes a rear mounting seat, and a receiving hole is provided on the rear mounting seat, and a nut limiting unit is provided at the opening end of the receiving hole;

[0010] A pre-tightening module, the pre-tightening module includes a loading unit and a sliding loading seat, the sliding loading seat is slidably arranged on the test bench, the loading unit is connected to the sliding loading seat and applies a pre-tightening load to the sliding loading head; the nut clamping component is connected to the sliding loading seat;

[0011] A driving module, the driving module is connected to the front mounting seat and drives the front mounting seat to rotate;

[0012] A detection module, the detection module is arranged on the rear mounting seat and is used to detect the vibration parameters of the nut clamping component;

[0013] The described screw clamping assembly and nut clamping assembly are arranged opposite to each other left and right, and the rotation center line of the coupling is aligned with the center line of the accommodation hole.

[0014] During the test, the lead screw is placed between the screw clamping assembly and the nut clamping assembly. One end of the screw is fixedly connected to the coupling in the screw clamping assembly, and the other end extends into the accommodation hole. The mounting rear seat is connected to the nut and circumferentially limits the nut.

[0015] The loading unit drives the sliding loading seat to slide and applies an axial load to the nut to form a pre-tightening force between the nut and the screw. The driving module drives the mounting front seat to rotate reciprocally left and right and drives the screw to rotate through the coupling to form a reciprocating rotational motion between the screw and the nut. The detection module detects the vibration parameters of the mounting rear seat in real time to evaluate the vibration performance of the lead screw and provides a reliable guarantee for product design and performance research.

[0016] The lead screw vibration performance testing machine of the present application can not only efficiently and reliably realize the motion simulation and vibration test of the lead screw, but also be applicable to different models of products by replacing the coupling, and has the advantages of simple structure, convenient installation and reliable test.

[0017] Preferably, the driving module includes a power unit and a support assembly. The support assembly includes a support seat and a transmission rod. The support seat is fixedly arranged on the test bench. The transmission rod is rotatably and movably connected to the support seat. One end of the transmission rod is connected to the power unit, and the other end is connected to the mounting front seat.

[0018] The support assembly plays a role in transmission and stable support, which can ensure the stability of the rotational driving force applied to the screw and reduce the influence of the front-end driving part on the vibration test result.

[0019] Preferably, the power unit is a motor.

[0020] Preferably, a slide rail is provided on the test bench, and the sliding loading seat is connected to the test bench through the slide rail.

[0021] Preferably, a pressure sensor is further provided between the loading unit and the sliding loading seat, and the pressure sensor is electrically connected to the loading unit.

[0022] Preferably, the accommodation hole includes a limiting section and an accommodation section. The limiting section is located at the opening end of the accommodation hole, and the diameter of the limiting section is larger than that of the accommodation section. The nut limiting unit includes a limiting groove provided on the inner wall of the limiting section, and the limiting groove extends axially to the opening end of the accommodation hole.

[0023] The limiting groove cooperates with the mating rib on the nut to realize the circumferential limitation of the nut. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the lead screw in this embodiment;

[0025] Figure 2 It is a schematic structural diagram of the lead screw vibration performance testing machine in this embodiment;

[0026] Figure 3 It is a schematic structural diagram of the mounting rear seat in the lead screw vibration performance testing machine in this embodiment;

[0027] Figure 4 It is a schematic structural diagram of the state where the clamping module clamps the lead screw in the lead screw vibration performance testing machine in this embodiment. Detailed Description of the Embodiment

[0028] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Embodiment

[0029] As Figures 2 - 4 shown, a lead screw vibration performance testing machine includes a test bench, a clamping module, a pre-tightening module, a driving module and a detection module 6.

[0030] As Figures 2 - 4 shown, the clamping module includes a screw clamping assembly 4 and a nut clamping assembly. The screw clamping assembly 4 includes a front mounting seat 42 and a coupling 41, and one end of the coupling 41 is detachably connected to the front mounting seat 42. The nut clamping assembly includes a rear mounting seat 3, and a receiving hole is provided on the rear mounting seat 3, and a nut limiting unit is provided at the opening end of the receiving hole.

[0031] As Figures 2 - 4 shown, the screw clamping assembly 4 and the nut clamping assembly are arranged opposite to each other left and right, and the rotation center line of the coupling 41 is aligned with the center line of the receiving hole.

[0032] As Figures 2 - 4 shown, specifically, the receiving hole includes a limiting section 312 and a receiving section 311. The limiting section 312 is located at the opening end of the receiving hole, and the diameter of the limiting section 312 is larger than that of the receiving section 311. The nut limiting unit includes a limiting groove 313 provided on the inner wall of the limiting section 312, and the limiting groove 313 extends axially to the opening end of the receiving hole. The limiting groove 313 cooperates with the matching rib on the nut to realize the circumferential limitation of the nut.

[0033] As Figures 2 - 4As shown in the figure, the preloading module includes a loading unit 21 and a sliding loading seat 22. The sliding loading seat 22 is slidably arranged on the test bench. The loading unit 21 is connected to the sliding loading seat 22 and applies a preloading load to the sliding loading head. The nut clamping assembly is connected to the sliding loading seat 22.

[0034] As Figures 2 - 4 shown in the figure, specifically, a slide rail is provided on the test bench, and the sliding loading seat 22 is connected to the test bench through the slide rail.

[0035] Specifically, a pressure sensor is further provided between the loading unit 21 and the sliding loading seat 22, and the pressure sensor is electrically connected to the loading unit 21.

[0036] As Figures 2 - 4 shown in the figure, the driving module is connected to the front mounting seat 42 and drives the front mounting seat 42 to rotate. The power unit 52 is a motor.

[0037] As Figures 2 - 4 shown in the figure, specifically, the driving module includes a power unit 52 and a support assembly 51. The support assembly 51 includes a support seat and a transmission rod. The support seat is fixedly arranged on the test bench. The transmission rod is rotatably and movably connected to the support seat. One end of the transmission rod is connected to the power unit 52, and the other end is connected to the front mounting seat 42. The support assembly 51 plays a role in transmission and stable support, which can ensure the stability of the rotational driving force applied to the screw rod and reduce the influence of the front-end driving part on the vibration test results.

[0038] As Figures 2 - 4 shown in the figure, the detection module 6 is arranged on the rear mounting seat 3 and is used to detect the vibration parameters of the nut clamping assembly.

[0039] During the test, the lead screw 1 is placed between the screw rod clamping assembly 4 and the nut clamping assembly. One end of the screw rod 11 is fixedly connected to the coupling 41 in the screw rod clamping assembly 4, and the other end extends into the accommodating hole. The rear mounting seat 3 is connected to the nut 12 and circumferentially limits the nut 12.

[0040] The loading unit 21 drives the sliding loading seat 22 to slide and applies an axial load to the nut, forming a preloading force between the nut and the screw rod. The driving module drives the front mounting seat 42 to rotate left and right reciprocally and drives the screw rod to rotate through the coupling 41, forming a reciprocating rotational movement between the screw rod and the nut. The detection module 6 real-time detects the vibration parameters of the rear mounting seat 3, which is used to evaluate the vibration performance of the lead screw and provides a reliable guarantee for product design and performance research.

[0041] The lead screw vibration performance testing machine of the present application can not only efficiently and reliably realize the motion simulation and vibration testing of the lead screw, but also be applicable to different models of products by replacing the coupling 41, and has the advantages of simple structure, convenient installation and reliable testing.

[0042] In conclusion, the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A screw vibration performance testing machine, characterized in that: At least: Test bench; A clamping module, wherein the clamping module comprises a screw clamping assembly and a nut clamping assembly; The screw clamping assembly comprises a mounting front seat and a coupling, one end of the coupling being detachably connected to the mounting front seat; The nut clamping assembly comprises a mounting rear seat, a receiving hole is provided on the mounting rear seat, and a nut limiting unit is provided at an open end of the receiving hole; A pre-tightening module, wherein the pre-tightening module comprises a loading unit and a sliding loading seat, wherein the sliding loading seat is slidably arranged on the test bench, wherein the loading unit is connected to the sliding loading seat and applies a pre-tightening load to the sliding loading head; wherein the nut clamping assembly is connected to the sliding loading seat; A driving module, wherein the driving module is connected to the front mounting seat and drives the front mounting seat to rotate; A detection module, which is arranged on the mounting rear seat and is used to detect vibration parameters of the nut clamping assembly; The screw clamping assembly and the nut clamping assembly are arranged opposite to each other on the left and right, and the rotation center line of the coupling is aligned with the center line of the accommodating hole.

2. The screw vibration performance testing machine according to claim 1, characterized in that: The driving module includes a power unit and a support assembly, the support assembly includes a support seat and a transmission rod, the support seat is fixedly arranged on the test bench, the transmission rod is rotatably connected to the support seat, one end of the transmission rod is connected to the power unit, and the other end is connected to the front mounting seat.

3. The screw vibration performance testing machine according to claim 2, characterized in that: The power unit is a motor.

4. The screw vibration performance testing machine according to claim 1, characterized in that: The test bench is provided with a slide rail, and the sliding loading seat is connected to the test bench via the slide rail.

5. The screw vibration performance testing machine according to claim 1, characterized in that: A pressure sensor is also provided between the loading unit and the sliding loading seat, and the pressure sensor is electrically connected to the loading unit.

6. The screw vibration performance testing machine according to any one of claims 1 to 5, characterized in that: The accommodating hole includes a limiting segment and an accommodating segment, the limiting segment is located at the opening end of the accommodating hole, and the diameter of the limiting segment is larger than the accommodating segment; the nut limiting unit includes a limiting groove arranged on the inner wall of the limiting segment, and the limiting groove extends axially to the opening end of the accommodating hole.

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