Torque testing device for ball screw pair

Abstract

The utility model provides a torque testing device for a ball screw pair. The torque testing device comprises a base; a vertical plate is fixedly connected to the upper end of the base, a stepping motor is arranged on the left side of the vertical plate, a positioning cylinder is fixedly connected to the output end of the stepping motor, a sliding plate is slidably connected to the upper end of the base, two sets of sliding rods are slidably connected to the left side of the sliding plate, and a connecting plate is fixedly connected to the left ends of the sliding rods. The bottom of the connecting plate is fixedly connected with a hand-held torsion meter body. According to the ball screw pair torque testing device, one end of the screw is fixedly connected with the positioning cylinder, the other end of the screw is fixedly connected with the hand-held torque meter body, then the stepping motor is started, the stepping motor drives the positioning cylinder to rotate, the positioning cylinder drives the screw to rotate, and at the moment, the screw drives the detection structure of the hand-held torque meter body to rotate. At the moment, detection data can be obtained by observing the handheld torsion meter body, the lead screw can be fixed and stably rotated through the structure, and the detection data are accurate.

Description

Technical Field

[0001] This utility model relates to the technical field of ball screw pair testing equipment, and in particular to a ball screw pair torque testing device. Background Art

[0002] A ball screw assembly, also known as a ball screw pair or ball screw assemblies, consists of two matching parts: a screw and a nut. It is the most precise and commonly used transmission device in mechanical transmission. Because ball screw assemblies utilize the movement of rolling balls, the starting torque is extremely small, and there is no creeping phenomenon like in sliding motion, ensuring precise micro-feeding. To ensure stable operation of the ball screw, it is usually necessary to perform tests.

[0003] In the field of ball screw pair testing equipment technology, the simplest testing method is to use a handheld torque meter. However, when using a handheld torque meter, the screw cannot be fixed and rotated smoothly, which can easily lead to inaccurate test data.

[0004] Therefore, it is necessary to provide a ball screw torque testing device to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a ball screw pair torque testing device, which solves the problem that when using only a handheld torque meter, it is impossible to fix the screw and rotate it smoothly, which easily leads to inaccurate test data.

[0006] To solve the above-mentioned technical problems, the present invention provides a ball screw pair torque testing device, comprising: a base;

[0007] A vertical plate is fixedly connected to the upper end of the base. A stepper motor is provided on the left side of the vertical plate. A positioning cylinder is fixedly connected to the output end of the stepper motor. A sliding plate is slidably connected to the upper end of the base. A sliding rod is slidably connected to the left side of the sliding plate. Two sets of sliding rods are provided. A connecting plate is fixedly connected to the left end of the sliding rod. A handheld torque meter body is fixedly connected to the bottom of the connecting plate.

[0008] Preferably, a spring is sleeved on the periphery of the slide rod, and the spring is located between the connecting plate and the slide plate.

[0009] Preferably, a limiting plate is fixedly connected to the right end of the slide rod, and a pull rod is fixedly connected to the right side of the limiting plate.

[0010] Preferably, the upper end of the base is provided with a sliding groove, and the sliding plate is slidably connected inside the sliding groove.

[0011] Preferably, a guide rod is fixedly connected inside the chute, and two sets of guide rods are provided, with the sliding plate slidably connected to the guide rod.

[0012] Preferably, a lead screw is rotatably connected inside the slide groove, the lead screw is threadedly connected to the sliding plate, and a handwheel is fixedly connected to the right end of the lead screw.

[0013] Compared with related technologies, the ball screw torque testing device provided by this utility model has the following advantages:

[0014] Beneficial effects:

[0015] This utility model provides a ball screw torque testing device. One end of the screw is connected and fixed to a positioning cylinder, and the other end is connected and fixed to the handheld torque meter body. Then, a stepper motor is started, which drives the positioning cylinder to rotate, and the positioning cylinder drives the screw to rotate. At this time, the screw drives the detection structure of the handheld torque meter body to rotate. The test data can be obtained by observing the handheld torque meter body. This structure can fix the screw and make the screw rotate smoothly, resulting in accurate test data. Separate the handheld torque meter body from the screw, and then pull the lever to make the slide bar slide to the right. At this time, the handheld torque meter body moves synchronously, which makes it easy to remove the screw and replace it with a new screw for testing. By turning the handwheel, the screw can be rotated, and the sliding plate can slide along the guide rod. This structure can adjust the position of the sliding plate, thereby facilitating the testing of screws of different lengths. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the ball screw pair torque testing device provided by this utility model;

[0017] Figure 2 for Figure 1 A magnified schematic diagram of the structure of region A shown.

[0018] The following are labeled in the diagram: 1. Base; 2. Vertical plate; 3. Stepper motor; 4. Positioning cylinder; 5. Sliding plate; 6. Sliding rod; 7. Connecting plate; 8. Handheld torque meter body; 9. Spring; 10. Limiting plate; 11. Pull rod; 12. Slide groove; 13. Guide rod; 14. Lead screw; 15. Handwheel. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please refer to Figure 1 and Figure 2 ,in Figure 1 A schematic diagram of a preferred embodiment of the ball screw pair torque testing device provided by this utility model; Figure 2 for Figure 1 The enlarged structural schematic diagram of area A shown shows a ball screw pair torque testing device, including: base 1;

[0021] A vertical plate 2 is fixedly connected to the upper end of the base 1. A stepper motor 3 is set on the left side of the vertical plate 2. A positioning cylinder 4 is fixedly connected to the output end of the stepper motor 3. A sliding plate 5 is slidably connected to the upper end of the base 1. A sliding rod 6 is slidably connected to the left side of the sliding plate 5. There are two sets of sliding rods 6. A connecting plate 7 is fixedly connected to the left end of the sliding rod 6. A handheld torque meter body 8 is fixedly connected to the bottom of the connecting plate 7. The right end of the positioning cylinder 4 matches the lead screw. The center of the handheld torque meter body 8 is aligned with the center of the positioning cylinder 4.

[0022] A spring 9 is fitted around the side of the slide rod 6, and the spring 9 is located between the connecting plate 7 and the sliding plate 5.

[0023] The right end of the slide rod 6 is fixedly connected to a limiting plate 10, and the right side of the limiting plate 10 is fixedly connected to a pull rod 11, which facilitates the pulling of the limiting plate 10.

[0024] The upper end of the base 1 has a groove 12, and the sliding plate 5 is slidably connected inside the groove 12.

[0025] The slide 12 is fixedly connected to the guide rod 13, and there are two sets of guide rods 13. The sliding plate 5 is slidably connected to the guide rod 13.

[0026] A lead screw 14 is rotatably connected inside the slide groove 12. The lead screw 14 is threadedly connected to the sliding plate 5. A handwheel 15 is fixedly connected to the right end of the lead screw 14.

[0027] The working principle of the ball screw pair torque testing device provided by this utility model is as follows:

[0028] Step 1: When using the instrument, connect and fix one end of the lead screw to the positioning cylinder 4, and the other end to the handheld torque meter body 8. Then start the stepper motor 3. The stepper motor 3 drives the positioning cylinder 4 to rotate, and the positioning cylinder 4 drives the lead screw to rotate. At this time, the lead screw drives the detection structure of the handheld torque meter body 8 to rotate. The detection data can be obtained by observing the handheld torque meter body 8.

[0029] Step 2: Separate the handheld torque meter body 8 from the lead screw, and then pull the lever 11 to make the slide bar 6 slide to the right. At this time, the handheld torque meter body 8 moves synchronously, which makes it easy to remove the lead screw and replace it with a new lead screw for testing. By turning the handwheel 15, the lead screw 14 can be rotated, which allows the sliding plate 5 to slide along the guide rod 13. This structure allows the position of the sliding plate 5 to be adjusted, thus facilitating the testing of lead screws of different lengths.

[0030] Compared with related technologies, the ball screw torque testing device provided by this utility model has the following advantages:

[0031] Beneficial effects:

[0032] One end of the lead screw is connected and fixed to the positioning cylinder 4, and the other end is connected and fixed to the handheld torque meter body 8. Then, the stepper motor 3 is started, and the stepper motor 3 drives the positioning cylinder 4 to rotate. The positioning cylinder 4 drives the lead screw to rotate. At this time, the lead screw drives the detection structure of the handheld torque meter body 8 to rotate. At this time, the detection data can be obtained by observing the handheld torque meter body 8. This structure can fix the lead screw and make the lead screw rotate smoothly, and the detection data is accurate. Separate the handheld torque meter body 8 from the lead screw, and then pull the pull rod 11 to make the slide rod 6 slide to the right. At this time, the handheld torque meter body 8 moves synchronously. At this time, it is convenient to remove the lead screw and replace it with a new lead screw for testing. By turning the handwheel 15, the lead screw 14 can be rotated, and the sliding plate 5 can slide along the guide rod 13. The position of the sliding plate 5 can be adjusted through this structure, so as to facilitate the detection of lead screws of different lengths.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A ball screw pair torque testing device, characterized in that, include: Base (1); A vertical plate (2) is fixedly connected to the upper end of the base (1). A stepper motor (3) is provided on the left side of the vertical plate (2). A positioning cylinder (4) is fixedly connected to the output end of the stepper motor (3). A sliding plate (5) is slidably connected to the upper end of the base (1). A sliding rod (6) is slidably connected to the left side of the sliding plate (5). Two sets of sliding rods (6) are provided. A connecting plate (7) is fixedly connected to the left end of the sliding rod (6). A handheld torque meter body (8) is fixedly connected to the bottom of the connecting plate (7).

2. The ball screw pair torque testing device according to claim 1, characterized in that, A spring (9) is sleeved on the periphery of the slide rod (6), and the spring (9) is located between the connecting plate (7) and the sliding plate (5).

3. The ball screw pair torque testing device according to claim 2, characterized in that, The right end of the slide bar (6) is fixedly connected to a limiting plate (10), and a pull rod (11) is fixedly connected to the right side of the limiting plate (10).

4. The ball screw pair torque testing device according to claim 3, characterized in that, The upper end of the base (1) is provided with a sliding groove (12), and the sliding plate (5) is slidably connected inside the sliding groove (12).

5. The ball screw pair torque testing device according to claim 4, characterized in that, The guide rod (13) is fixedly connected inside the slide groove (12), and there are two sets of guide rods (13). The sliding plate (5) is slidably connected to the guide rod (13).

6. The ball screw pair torque testing device according to claim 5, characterized in that, A lead screw (14) is rotatably connected inside the slide groove (12). The lead screw (14) is threadedly connected to the sliding plate (5). A handwheel (15) is fixedly connected to the right end of the lead screw (14).

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