CN113532854B - Axial loading testing device for ball screw pair - Google Patents
Axial loading testing device for ball screw pair Download PDFInfo
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- CN113532854B CN113532854B CN202110714594.2A CN202110714594A CN113532854B CN 113532854 B CN113532854 B CN 113532854B CN 202110714594 A CN202110714594 A CN 202110714594A CN 113532854 B CN113532854 B CN 113532854B
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- screw pair
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- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission Devices (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a ball screw auxiliary shaft loading test device, which comprises: a base and a top plate opposite thereto; the connecting shaft is positioned between the base and the top plate, and one end of the connecting shaft is embedded into the top plate; the limiting plate is arranged on the base and fixedly connected with the base so as to realize the circumferential fixing function of the connecting shaft, thereby ensuring the circumferential position of the ball screw pair; the transmission pin is fixedly arranged on the ball screw pair so as to realize the axial fixing function of the connecting shaft; the ball screw pair is connected with the top plate through a connecting shaft, and the ball screw pair, the connecting shaft and the top plate are coaxially arranged, so that effective transmission of pressure is realized; one end of the ball screw pair is embedded into the base and is connected with the base in a matched manner through a groove; the other end is placed inside the connecting shaft and embedded inside the top plate. The axial loading test device realizes the application of pressure to the weak point of the ball screw pair, ensures the axial fixation and the circumferential fixation of the ball screw pair in the force application process, and is safe and reliable.
Description
Technical Field
The invention relates to the technical field of test devices, in particular to a ball screw auxiliary shaft loading test device.
Background
With the development of electric transmission technology, ball screw pair transmission gradually becomes the development direction of main flow transmission mechanism due to the advantages of simple structure, high transmission efficiency, high transmission precision, higher reliability and the like, and is widely applied in the aerospace field.
With the continuous development of the aerospace technology in China, the aerospace craft provides higher performance requirements on the volume, the mass, the static and dynamic response state, the bearing capacity, the reliability and the like of the ball screw pair. The reliability and stability of the transmission of the ball screw pair are directly related to the normal operation of the spacecraft, so that very high requirements are put forward on the early-stage simulated loading test of the ball screw pair.
The characteristics of the aerospace working condition are mainly as follows: short-time high overload, limited service life, high reliability and normal operation under lubrication-free conditions for a considerable period of time. Therefore, aiming at the special working condition of aerospace, how to provide an axial loading testing device of a ball screw pair to realize axial loading becomes a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide an axial loading testing device of a ball screw pair, which realizes the functions of axial fixing and circumferential fixing of a connecting shaft in the loading process, and pressure is effectively applied to weak points of the ball screw pair and a transmission pin.
In order to achieve the above object, the present invention provides a ball screw auxiliary shaft loading test device, comprising: a base and a top plate opposite thereto; the connecting shaft is positioned between the base and the top plate, and one end of the connecting shaft is embedded into the top plate; the limiting plate is arranged on the base and fixedly connected with the base so as to realize the circumferential fixing function of the connecting shaft; the transmission pin is fixedly arranged on the ball screw pair so as to realize the axial fixing function of the connecting shaft; the ball screw pair is connected with the top plate through a connecting shaft, and the ball screw pair, the connecting shaft and the top plate are coaxially arranged to realize effective transmission of pressure; one end of the ball screw pair is embedded into the base and is connected with the base in a matched manner through a groove; the other end is placed inside the connecting shaft and embedded inside the top plate.
According to the invention, the limiting plate is of an L-shaped structure, one end face is fixed on the base through the screw, and the other end face is in contact with the connecting shaft to prevent the connecting shaft from moving circumferentially.
According to the invention, the transmission pin is fixedly connected with the ball screw pair through the screw, and the transmission pin is arranged near the connecting shaft so as to ensure the axial fixation of the connecting shaft through the transmission pin.
According to the invention, the ball screw pair is connected with the base in a matched manner through the groove.
According to the invention, the top plate, the connecting shaft and the ball screw pair are coaxially arranged, so that the pressure is realized from the top plate to the connecting shaft until the ball screw pair and the transmission pin are at weak points.
The invention has the beneficial effects that:
the invention provides an axial loading testing device of a ball screw pair, solves the problems of testing limitation, safety, reliability and the like caused by factors such as inconvenient direct stress, axial pressure loading stability and the like of the ball screw and a transmission pin, can realize axial loading of the ball screw under the condition of keeping connection axial and circumferential fixing, is an important technical realization way of ground function testing and performance testing, provides technical support for design and manufacture of real products, greatly reduces cost of research and development design and testing test, manpower and material resources and has great practical application value.
Drawings
Fig. 1 schematically shows a structural schematic diagram of a ball screw assembly axial loading test device.
Fig. 2 schematically shows a cross-sectional structural view of the ball screw assembly axial load testing device.
Detailed Description
The construction and application of the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the following examples are illustrative only and are not to be construed as limiting the scope of the invention. All techniques implemented based on the above description of the invention are intended to be included within the scope of the invention.
Referring to fig. 1-2, the invention provides an axial loading testing device of a ball screw assembly, which mainly comprises a base 10, a top plate 30 opposite to the base, a connecting shaft 40, a transmission pin 50, a limiting plate 60 and the like. The connecting shaft 40 is located between the base 10 and the top plate 30, and one end of the connecting shaft 40 is embedded in the top plate 30. The limiting plate 60 is disposed on the base 10 and fixedly connected with the base 10, so as to achieve a circumferential fixing function of the connecting shaft 40.
During testing, one end of the ball screw assembly 20 is embedded into the base 10 and is connected with the base 10 through groove matching, and the other end of the ball screw assembly is placed inside the connecting shaft 40 and embedded into the top plate 30. The ball screw pair 20 is connected with the base 10 through a groove in a matched manner, so that the axial positioning function of the ball screw pair 20 is realized, and the axial position of the ball screw pair is ensured. The ball screw pair 20 is connected with the top plate 30 through the connecting shaft 40, namely, the ball screw pair 20 and the connecting shaft 40 are coaxially arranged with the top plate 30, so that effective transmission of pressure is realized. Preferably, the ball screw assembly 20 is cooperatively connected with the base 10 through a groove, and the groove connection is beneficial to reducing assembly complexity and ensuring axial position accuracy.
As shown in fig. 2, the drive pin 50 is fixedly mounted on the ball screw assembly 20, for example, the drive pin 50 is mounted on the ball screw assembly 20 by screws. The driving pin 50 is disposed near the connection shaft 40 to secure the axial fixation of the connection shaft 40 by the driving pin 50.
Preferably, the limiting plate 60 is fixedly connected with the base 10 through a screw, and the limiting plate 60 is arranged near the connecting shaft 40 to ensure circumferential fixation of the connecting shaft 40 through the limiting plate 60, and further ensure circumferential position of the ball screw pair 20.
Specifically, the limiting plate 60 may have an L-shaped structure, one end surface of which is fixed to the base 10 by a screw, and the other end surface of which contacts the connection shaft 40 to prevent the connection shaft 40 from moving circumferentially.
After the ball screw pair 20 is installed from bottom to top by adopting the axial loading testing device, the ball screw pair axial loading device is placed on a vertical pressure table, and pressure is transmitted to the connecting shaft 40 from the top plate 30 and is transmitted to the ball screw pair 20 and the transmission pin 50 from the connecting shaft 40. The axial loading testing device provided by the invention realizes the application of pressure to the weak point of the ball screw pair 20, and ensures the axial fixation and circumferential fixation of the ball screw pair 20 in the force application process, so that the device is safe and reliable.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A ball screw auxiliary shaft loading test device, characterized by comprising:
A base (10) and a top plate (30) opposite thereto;
the connecting shaft (40) is positioned between the base (10) and the top plate (30), and one end of the connecting shaft (40) is embedded into the top plate (30);
The limiting plate (60) is arranged on the base (10) and is fixedly connected with the base (10) so as to realize the circumferential fixing function of the connecting shaft (40), thereby ensuring the circumferential position of the ball screw pair (20);
The transmission pin (50) is fixedly arranged on the ball screw pair (20) so as to realize the axial fixation of the connecting shaft (40);
The ball screw pair (20) is connected with the top plate (30) through a connecting shaft (40), and the ball screw pair (20), the connecting shaft (40) and the top plate (30) are coaxially arranged to realize effective transmission of pressure;
One end of the ball screw pair (20) is embedded into the base (10) and is connected with the base (10) in a matched manner through a groove; the other end is arranged inside the connecting shaft (40) and embedded inside the top plate (30);
The limiting plate (60) is fixedly connected with the base (10) through a screw, and the limiting plate (60) is arranged near the connecting shaft (40) so as to ensure circumferential fixation of the connecting shaft (40) through the limiting plate (60);
The limiting plate (60) is of an L-shaped structure, one end face of the limiting plate is fixed on the base (10) through a screw, and the other end face of the limiting plate is in contact with the connecting shaft (40) to prevent the connecting shaft (40) from moving circumferentially;
The transmission pin (50) is mounted on the ball screw pair (20) through a screw, and the transmission pin (50) is arranged near the connecting shaft (40) so as to ensure the axial fixation of the connecting shaft (40) through the transmission pin (50).
2. The ball screw pair shaft loading test device according to claim 1, wherein the ball screw pair (20) is connected with the base (10) in a matched manner through a groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110714594.2A CN113532854B (en) | 2021-06-25 | 2021-06-25 | Axial loading testing device for ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110714594.2A CN113532854B (en) | 2021-06-25 | 2021-06-25 | Axial loading testing device for ball screw pair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113532854A CN113532854A (en) | 2021-10-22 |
| CN113532854B true CN113532854B (en) | 2024-04-26 |
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| CN202110714594.2A Active CN113532854B (en) | 2021-06-25 | 2021-06-25 | Axial loading testing device for ball screw pair |
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2021
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