A ball screw life testing machine for dusty environments

Abstract

This utility model discloses a ball screw life testing machine for dusty environments, including a test platform with a test chamber on the platform. The test platform has symmetrically arranged fixed seats on both sides inside the test chamber, and fixed shafts are fixedly mounted on the fixed seats. Each fixed shaft on both sides is flange-connected to a supporting side plate, and a supporting base plate is fixed between the two supporting side plates. Several test components are arranged parallel to each other on the supporting base plate. A dust roller is sleeved between the two fixed shafts. A first motor is located on one side of the dust roller on the test platform, and a drive wheel is located at the output end of the first motor. A driven wheel is flange-connected to one side of the dust roller, and a synchronous belt meshes between the drive wheel and the driven wheel. This utility model has the characteristic of satisfying the requirements for ball screw life testing in dusty environments.

Description

Technical Field

[0001] This utility model relates to the field of mechanical performance testing technology, specifically a ball screw life testing machine for dusty environments. Background Technology

[0002] As a precision transmission component that converts rotary motion into linear motion, the service life and operational reliability of ball screws directly affect the production efficiency, processing accuracy, and maintenance costs of the entire equipment.

[0003] A published Chinese patent, publication number CN208721399U, discloses a test bench for testing the lifespan of multiple ball screws. The bench includes a driving ball screw, multiple ball screws under test, a multi-screw nut, multiple torque and speed sensors, and a brake. The driving ball screw and the ball screws under test are arranged parallel to each other at intervals. The number of nut holes in the multi-screw nut is the same as the total number of the driving ball screw and the ball screws under test. The driving ball screw is connected to one of the nut holes, and the ball screws under test are connected to the remaining nut holes one by one. The two ends of the driving ball screw and the two ends of the ball screws under test are respectively mounted on a first bearing seat and a second bearing seat. The driving ball screw passes through the first bearing seat and is connected to a servo motor, while the ball screws under test pass through the second bearing seat and are connected to the brake via torque and speed sensors.

[0004] The test bench provided by the disclosed patent can test and evaluate the life of multiple ball screws by simulating different loads and rotation speeds. However, the solution lacks an effective dust environment simulation mechanism and cannot replicate harsh environments rich in dust, such as mining and construction. This results in a disconnect between the test environment and the real service environment, leading to the actual service life of the ball screw being far lower than the test results. Utility Model Content

[0005] The purpose of this invention is to provide a ball screw life testing machine for dusty environments to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a ball screw life testing machine in a dusty environment, including a test platform, a test box on the test platform, fixed seats symmetrically arranged on both sides inside the test box, and a fixed shaft fixed on the fixed seat; Both sides of the fixed shaft are flanged and connected to support side plates. A support base plate is fixed between the two support side plates. Several test components are arranged parallel to each other on the support base plate at intervals. A dust roller is fitted between the two fixed shafts. The test bench has a first motor on one side of the dust roller. The output end of the first motor has a drive wheel. A driven wheel is connected to a flange on one side of the dust roller. A synchronous belt meshes between the drive wheel and the driven wheel.

[0007] In one embodiment of the present invention, the test assembly includes a support base and a motor base. The support bases are symmetrically distributed on both sides of the supporting base plate. The motor base is fixed on one side of the support base. A test lead screw is provided between the two support bases. A nut is sleeved on the test lead screw. A second motor is installed on the motor base. The output end of the second motor is connected to one end of the test lead screw through a coupling.

[0008] In one embodiment of the present invention, the supporting base plate is fixedly provided with linear guide rails at the bottom of the two side support seats, and the two side support seats are slidably connected to the linear guide rails.

[0009] In one embodiment of this utility model, constraint columns are symmetrically arranged between the two support seats, and the constraint columns on both sides cooperate to form a constraint channel. A constraint pin is fixed at the bottom of the nut, and a follower wheel is sleeved in the constraint channel. The follower wheel is fitted with the constraint columns on both sides.

[0010] In one embodiment of the present invention, a plurality of powder discharge ports are equidistantly provided on both sides of the dust roller along the circumferential direction, and a transparent plate is detachably installed on the powder discharge port.

[0011] In one embodiment of this utility model, both the supporting side plate and the supporting bottom plate are hollow structures.

[0012] In one embodiment of the present invention, the test box is provided with openable transparent door panels on all four sides, and a control unit is installed on one side of the test box.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are: (1) By setting up a cooperative structure with a dust drum, a first motor, a driving wheel, a driven wheel and a synchronous belt, the first motor drives the driving wheel to rotate, and the synchronous belt drives the driven wheel and the dust drum to rotate synchronously, thereby turning the dust in the dust drum to continuously fall onto the ball screw, which can accurately simulate the service conditions of the ball screw in the dust environment, and make the test data more in line with the actual service conditions. (2) By setting up several test components, multiple sets of ball screws can be tested synchronously, which greatly improves the test efficiency. At the same time, the support seat in the test component is slidably connected to the linear guide rail, which makes it easy to finely adjust the spacing according to different specifications of test screws, enhancing the versatility of the equipment. The constraint column between the two support seats cooperates with the follow wheel at the bottom of the nut to limit the radial movement of the nut, ensuring that the nut maintains linear movement, thus ensuring the stability of the test process and the accuracy of the test data. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structural composition of this utility model; Figure 2 This is a schematic diagram of the internal structure of the test chamber of this utility model; Figure 3 This is a schematic diagram of the interior of the dust roller of this utility model; Figure 4 This is a schematic diagram of the test component structure of this utility model; In the diagram: 10. Test bench; 11. Test box; 111. Transparent door panel; 112. Control unit; 20. Fixed base; 21. Fixed shaft; 22. Supporting side plate; 23. Supporting base plate; 30. Test assembly; 31. Support seat; 311. Constraint column; 312. Constraint channel; 32. Motor base; 33. Test lead screw; 34. Nut; 341. Constraint pin; 342. Follower wheel; 35. Second motor; 40. Dust roller; 41. Driven wheel; 42. Powder outlet; 43. Transparent plate; 50. First motor; 51. Drive wheel; 52. Synchronous belt; 60. Linear guide rail. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] This utility model provides a technical solution: a ball screw life testing machine for dusty environments, including a test bench 10, a test chamber 11 on the test bench 10, fixed seats 20 symmetrically arranged on both sides inside the test chamber 11, fixed shafts 21 fixed on the fixed seats 20, and flanges connecting the fixed shafts 21 on both sides to support side plates 22. A support base plate 23 is fixed between the two support side plates 22, and a plurality of test components 30 are arranged parallel to each other on the support base plate 23. The test chamber 11 provides a closed space for testing, preventing dust from overflowing while ensuring the independence of the testing environment. The cooperation between the fixed seats 20 and the fixed shafts 21 provides stable installation support for the support side plates 22, the support base plate 23 and the dust roller 40, ensuring the structural stability of each component during operation. The plurality of test components 30 arranged parallel to each other on the support base plate 23 can simultaneously perform life tests on multiple sets of ball screws, significantly improving testing efficiency and facilitating comparative tests under different parameters. A dust roller 40 is fitted between two fixed shafts 21. A first motor 50 is provided on one side of the dust roller 40 on the test bench 10. The output end of the first motor 50 is provided with a drive wheel 51. A driven wheel 41 is connected to a flange on one side of the dust roller 40. A synchronous belt 52 meshes between the drive wheel 51 and the driven wheel 41. The fixed shafts 21 provide precise support and limit for the dust roller 40, ensuring that the dust roller 40 remains axially stable during rotation and avoiding deviation that could lead to uneven dust distribution. The first motor 50 serves as a power source and transmits power smoothly to the dust roller 40 through the transmission mechanism formed by the drive wheel 51, the synchronous belt 52, and the driven wheel 41, achieving uniform rotation of the dust roller 40. This allows the dust inside the dust roller 40 to continuously fall onto the test component 30 below at a preset frequency, thus constructing a stable and controllable dust environment simulation system.

[0017] The test assembly 30 includes a support base 31 and a motor base 32. The support bases 31 are symmetrically distributed on both sides of the supporting base plate 23, and the motor base 32 is fixed to one side of the support base 31. A test lead screw 33 is provided between the two support bases 31, and a nut 34 is fitted on the test lead screw 33. A second motor 35 is mounted on the motor base 32, and the output end of the second motor 35 is connected to one end of the test lead screw 33 through a coupling. The support bases 31 symmetrically distributed on both sides of the supporting base plate 23 provide reliable end support for the test lead screw 33, ensuring that the test lead screw 33 does not undergo radial displacement when operating at high speed or bearing load. The motor base 32 provides support for the test lead screw 33. The second motor 35 serves as a secure fixing mechanism and acts as the power source for the test screw 33. Through a coupling, the power is smoothly transmitted to the test screw 33, driving it to achieve forward and reverse cyclic motion. The cooperation between the test screw 33 and the nut 34 simulates the transmission state of the ball screw in actual equipment. By controlling the speed and direction of the second motor 35, the operating parameters of the ball screw under different working conditions can be accurately simulated. This facilitates the monitoring of its wear degree, operating resistance, and accuracy decay in dusty environments, as well as other life-related indicators, providing direct and accurate experimental data support for ball screw life assessment.

[0018] The supporting base plate 23 has linear guide rails 60 fixed to the bottom of the two side support seats 31, and the two side support seats 31 are slidably connected to the linear guide rails 60. The sliding fit structure between the linear guide rails 60 and the support seats 31 allows the operator to smoothly slide the two side support seats 31 along the linear guide rails 60 according to the actual length of the test lead screw 33, quickly adjusting the distance between the two side support seats 31 to accommodate test lead screws 33 of different lengths. Constraint posts 311 are symmetrically arranged between the two side support seats 31, and the constraint posts 311 cooperate to form a constraint channel. The bottom of the nut 34 is fixed with a constraint pin 341. The constraint pin 341 is fitted with a follower wheel 342 inside the constraint channel 312. The follower wheel 342 is fitted with the constraint posts 311 on both sides. The constraint channel 312 formed by the constraint posts 311 on both sides restricts the movement and displacement of the nut 34 through the cooperation of the constraint pin 341 and the follower wheel 342. When the nut 34 moves linearly along the test screw 33, the follower wheel 342 will roll along the constraint channel 312, avoiding excessive frictional resistance that would cause the test screw 33 to be subjected to additional force.

[0019] The dust roller 40 has several powder discharge ports 42 evenly spaced along the circumference on both sides. A transparent plate 43 is detachably installed on each powder discharge port 42. The powder discharge port 42 provides a channel for adding dust, while the detachable transparent plate 43 closes the powder discharge port 42 when the dust roller 40 is running to prevent dust leakage. The transparent material also allows the test personnel to observe the internal condition of the dust roller 40 in real time. Both the supporting side plate 22 and the supporting bottom plate 23 are hollow structures. The hollow structure allows the dust spilled from the dust roller 40 to fall smoothly through the hollow area of ​​the supporting bottom plate 23, preventing dust from accumulating on the supporting bottom plate 23. In addition, the hollow design significantly reduces the overall weight of the supporting structure and reduces the load on the fixed seat 20 and the fixed shaft 21 while ensuring stable support for the test component 30. The test chamber 11 has four openable transparent doors 111 on all four sides, and a control unit 112 is installed on one side of the test chamber 11. During the preparation stage before the test, the components can be inspected and adjusted by opening any transparent door 111. The transparent material allows the test personnel to clearly observe the operating status of the test component 30 from multiple angles during the test, which facilitates timely detection of abnormalities and the taking of measures. The operator can directly control the various parameters of the test machine through the interface of the control unit 112. The control unit 112 receives test data in real time, providing complete system data support for the subsequent ball screw life assessment.

[0020] Working principle: The parameters are set by the controller 112. After the parameters are set, the equipment is started. The first motor 50 starts to run. The drive wheel 51 at its output end drives the driven wheel 41 on one side of the dust drum 40 to rotate synchronously through the synchronous belt 52, so that the dust drum 40 rotates at a constant speed around the fixed shafts 21 on both sides, turning the internal dust over and causing the dust to continuously fall onto the test screw 33. At the same time, the second motor 35 starts and drives the test screw 33 to perform forward and reverse cyclic motion through the coupling. At this time, the nut 34 on the test screw 33 moves linearly along the axial direction of the test screw 33 under the constraint channel 312 formed by the constraint column 311 between the two support seats 31. The controller 112 collects and stores the test data in real time to provide a basis for life assessment.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] In the description of this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art can combine different embodiments or examples and features of different embodiments or examples described in this utility model without contradiction.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball screw life testing machine in a dusty environment, comprising a test bench (10), a test box (11) provided on the test bench (10), and fixed seats (20) symmetrically provided on both sides inside the test box (11) of the test bench (10), and a fixed shaft (21) fixed on the fixed seat (20). Its features are: Both sides of the fixed shaft (21) are flanged and connected to the supporting side plate (22). A supporting base plate (23) is fixed between the two sides of the supporting side plate (22). Several test components (30) are arranged parallel to each other on the supporting base plate (23). A dust roller (40) is fitted between the two fixed shafts (21). The test bench (10) has a first motor (50) on one side of the dust roller (40). The output end of the first motor (50) has a drive wheel (51). A driven wheel (41) is connected to a flange on one side of the dust roller (40). A synchronous belt (52) meshes between the drive wheel (51) and the driven wheel (41).

2. The ball screw life testing machine in a dusty environment according to claim 1, characterized in that: The test assembly (30) includes a support base (31) and a motor base (32). The support base (31) is symmetrically distributed on both sides of the support base plate (23). The motor base (32) is fixed on one side of the support base (31). A test lead screw (33) is provided between the two support bases (31). A nut (34) is fitted on the test lead screw (33). A second motor (35) is installed on the motor base (32). The output end of the second motor (35) is connected to one end of the test lead screw (33) through a coupling.

3. The ball screw life testing machine in a dusty environment according to claim 2, characterized in that: The supporting base plate (23) has linear guide rails (60) fixed at the bottom of the two side support seats (31), and the two side support seats (31) are slidably connected to the linear guide rails (60).

4. The ball screw life testing machine in a dusty environment according to claim 3, characterized in that: A constraint column (311) is symmetrically provided between the two support seats (31), and the constraint columns (311) on both sides cooperate to form a constraint channel (312). A constraint pin (341) is fixed at the bottom of the nut (34), and a follower wheel (342) is sleeved in the constraint channel (312) of the constraint pin (341). The follower wheel (342) is fitted with the constraint columns (311) on both sides.

5. The ball screw life testing machine in a dusty environment according to claim 1, characterized in that: The dust roller (40) has several powder discharge ports (42) equidistantly spaced on both sides along the circumferential direction, and a transparent plate (43) can be detachably installed on the powder discharge port (42).

6. The ball screw life testing machine in a dusty environment according to claim 1, characterized in that: Both the supporting side plate (22) and the supporting bottom plate (23) are hollow structures.

7. The ball screw life testing machine in a dusty environment according to claim 1, characterized in that: The test box (11) is provided with openable transparent door panels (111) on all four sides, and a control unit (112) is installed on one side of the test box (11).

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