Ball screw detection device

Abstract

A ball screw detection device comprises a mounting base, a driving device used for driving a vertically arranged ball screw to rotate is fixed on the lower portion of the mounting base, a spring chuck capable of clamping ball screws of different sizes is connected above the driving device, and a load bearing device driven to ascend and descend through rotation of the ball screw is mounted on the upper portion of the mounting base. According to the utility model, ball screws of different sizes are clamped and installed by arranging the spring collet, the practicability of the device is improved, meanwhile, an additional weight increasing piece can be installed on the bearing piece, the detection conditions of different ball screws can be met, and the practicability of the device is further improved.

Description

Technical Field

[0001] The utility model relates to the field of ball screw detection equipment, in particular to ball screw detection devices of different sizes. Background Art

[0002] Ball screws are the most commonly used transmission elements in tool machinery and precision machinery. Their main function is to convert rotational motion into linear motion, or torque into axial repetitive force, while having the characteristics of high precision, reversibility and high efficiency. Due to their small friction resistance, ball screws are widely used in various industrial equipment and precision instruments. The quality of the ball screws they are equipped with directly determines the transmission efficiency and stability of the ball screws.

[0003] Currently, ball screws need to be tested for their load-bearing performance before leaving the factory. Since ball screws come in different sizes, different devices are usually required to test ball screws of different sizes, which greatly increases the testing cost. At the same time, the testing device usually has a certain size, and a variety of testing equipment will also take up a lot of space, further increasing the testing cost. Summary of the invention

[0004] The utility model aims to solve the problems existing in the prior art and designs a ball screw detection device which can detect ball screws of different sizes.

[0005] The utility model adopts a technical solution to solve the technical problem: the ball screw detection device comprises a mounting seat, a driving device for driving a vertically arranged ball screw to rotate is fixed at the lower part of the mounting seat, a spring chuck for clamping ball screws of different sizes is connected above the driving device, and a load-bearing device driven to rise and fall by the rotation of the ball screw is installed on the upper part of the mounting seat.

[0006] For further improvement, the load-bearing device includes a fixed mounting plate installed on the top of the mounting seat and driven to rise and fall by the rotation of the ball screw, a load-bearing piece fixedly installed on the fixed mounting plate, and a slider arranged on the mounting plate to assist the fixed mounting plate and the load-bearing piece in lifting and falling motions. A ball screw nut that cooperates with the ball screw is fixedly installed on the top of the center position of the fixed mounting plate. The slider can prevent the fixed mounting plate from rotating with the rotation of the ball screw, so that the load-bearing device can perform stable lifting and falling motions.

[0007] Further improvement, a pair of weight-bearing parts are provided and symmetrically installed vertically on both sides of the fixed mounting plate. Providing a pair of weight-bearing parts and symmetrically installing them vertically on both sides of the fixed mounting plate can prevent the fixed mounting plate from being unbalanced, causing the weight-bearing device to tilt to one side and thus affecting the accuracy of the detection.

[0008] Further improvement, a plurality of weight-increasing parts can be detachably installed on the weight-bearing part. A plurality of weight-increasing parts can be detachably installed on the weight-bearing part to meet the detection requirements of different ball screws.

[0009] Further improvement, a holding space is provided inside the slider, the inner diameter of the holding space matches the outer diameter of the load-bearing piece, and the slider is provided with a pair and is vertically installed on both sides of the fixed mounting plate in a symmetrical state. Setting the inner diameter of the holding space of the slider to match the outer diameter of the load-bearing piece can prevent the load-bearing device from shaking during the lifting movement, thereby affecting the accuracy of the detection.

[0010] Further improvement, the driving device includes a driving motor installed at the bottom of the mounting seat, a coupling arranged on the output shaft of the driving motor, and the spring chuck is fixedly connected to the top of the coupling. The coupling is provided to drive the ball screw to rotate through the driving motor.

[0011] For further improvement, a positioning seat is arranged on the mounting seat so that the driving motor, the coupling, the spring chuck and the ball screw are located on the same axis.

[0012] To be further improved, the bottom of the positioning seat is provided with a mounting surface fixedly connected to the drive motor, the mounting surface is provided with a motor hole for setting the output shaft of the drive motor inside the positioning seat, the positioning seat is provided with a coupling accommodating space for accommodating the coupling, and the top of the positioning seat is provided with a connecting hole located on the same axis as the motor hole and assisting the spring clamp to connect with the coupling.

[0013] Further improvement, the spring chuck includes a fixing portion fixedly connected to the coupling and a mounting portion for clamping and mounting the ball screw, and the mounting portion is arranged above the fixing portion.

[0014] Further improvement, the top of the ball screw is provided with a limiter to prevent the load-bearing device from being separated from the ball screw. The provision of the limiter can prevent the ball screw from being separated from the ball screw nut during the detection process, thereby affecting the detection process.

[0015] The beneficial effect of the utility model is that the utility model improves the practicability of the device by providing a spring chuck to clamp and install ball screws of different sizes. At the same time, additional weight-increasing parts can be installed on the load-bearing parts to meet the detection conditions of different ball screws, further improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 Structural diagram for testing ball screws

[0018] Figure 3 A top view of a fixed mounting plate;

[0019] Figure 4 It is a structural schematic diagram of the slider;

[0020] Figure 5 It is a structural schematic diagram of a ball screw nut;

[0021] Figure 6 It is a structural schematic diagram of the positioning seat.

[0022] Explanation of the accompanying drawings: mounting seat 1, driving device 2, spring chuck 3, weight-bearing device 4, fixed mounting plate 5, weight-bearing part 6, slider 7, mounting hole 8, ball screw nut 9, weight-increasing part 10, accommodating space 11, driving motor 12, coupling 13, fixing part 14, mounting part 15, limiting part 16, ball screw nut body 17, mounting plate 18, ball screw nut fixing hole 19, slider fixing hole 20, positioning seat 21, mounting surface 22, motor hole 23, accommodating space 24, connecting hole 25. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the drawings and specific embodiments of the specification. A person of ordinary skill in the art will be able to implement the utility model based on these descriptions. In addition, the embodiments of the utility model involved in the following description are usually only embodiments of a part of the utility model, rather than all of the embodiments. Therefore, based on the embodiments in the utility model, all other embodiments obtained by a person of ordinary skill in the art without making creative work should fall within the scope of protection of the utility model.

[0024] Reference Figure 1 A ball screw detection device includes a mounting seat 1, a driving device 2 for driving a vertically arranged ball screw to rotate is fixed at the lower part of the mounting seat 1, a spring chuck 3 for clamping ball screws of different sizes is connected above the driving device 2, and a load-bearing device 4 is installed on the upper part of the mounting seat 1 and is driven to rise and fall by the rotation of the ball screw.

[0025] Among them, the load-bearing device 4 includes a fixed mounting plate 5 installed on the top of the mounting seat 1 and driven to rise and fall by a ball screw, a load-bearing part 6 fixedly installed on the fixed mounting plate 5, and a slider 7 arranged on the mounting seat 1 to assist the load-bearing part 6 in lifting and lowering movements. A accommodating space 11 is provided inside the slider 7, and the inner diameter of the accommodating space 11 matches the outer diameter of the load-bearing part 6. The slider 7 is provided with a pair of sliders 7 that are vertically installed in a symmetrical state on both sides of the fixed mounting plate 5. Specifically, in this embodiment, the slider 7 is a slider fixedly installed on the mounting seat 1. In order to enable the slider 7 to be stably installed on the mounting seat 1, a plurality of slider fixing holes 20 are opened on the slider 7, and a threaded hole matching the fixing hole is provided on the mounting seat 1. Screws are installed in the fixing hole, and the slider 7 is fixedly installed on the mounting seat 1 by threaded fixing.

[0026] Reference Figure 3 and attached Figure 5 : A mounting hole 8 is provided at the center position of the fixed mounting plate 5, and a ball screw nut 9 is detachably installed in the mounting hole 8. Specifically, the ball screw nut 9 includes a cylindrical ball screw nut body 17 and a mounting plate 18 arranged at the rear end of the ball screw nut 9 body, wherein the mounting plate is elliptical, and the major axis and minor axis of the mounting plate are both longer than the diameter of the ball screw nut 9. Therefore, by setting the inner diameter of the mounting hole 8 to be larger than the minor axis diameter and smaller than the major axis diameter, ball screws of different sizes can be tested by installing ball screw nuts 9 of different sizes on the fixed mounting plate 5. In order to ensure that the ball screw nut 9 can be stably installed on the fixed mounting plate 5, a ball screw nut fixing hole 19 is opened on the mounting plate 18, and a threaded hole matching the fixing hole is opened on the fixed mounting plate 5. A screw is installed in the fixing hole, and the ball screw nut 9 can be stably installed on the fixed mounting plate 5 by threaded fixing.

[0027] Reference Figure 2 : Since the ball screw nut 9 is arranged at the center position of the fixed mounting plate 5, in order to ensure the balance of the device, a pair of weight-bearing parts 6 are provided and vertically installed in a symmetrical state on both sides of the fixed mounting plate 5. The provision of a pair of weight-bearing parts 6 can prevent the detection device from tilting to one side and thus affecting the accuracy of the detection. In order to test the performance of the ball screw under different load-bearing conditions, a number of weight-increasing parts 10 are detachably installed on the weight-bearing part 6. Specifically, the weight-bearing part 6 in this embodiment is a hard optical axis, and the weight-increasing part 10 is a barbell plate detachable from the weight-bearing part 6.

[0028] The driving device 2 includes a driving motor 12 installed at the bottom of the mounting seat 1, and a coupling 13 arranged on the output shaft of the driving motor 12. During the detection, the load-bearing device 4 needs to be continuously reciprocated, so the driving motor 12 in this embodiment needs to drive the coupling 13 to continuously rotate from clockwise to counterclockwise and then to clockwise. The spring chuck 3 is fixedly connected to the top of the coupling 13, wherein the spring chuck 3 includes a connecting portion fixedly connected to the coupling 13, and a mounting portion 15 for clamping and mounting the ball screw. The mounting portion 15 is arranged Above the fixing portion 14, specifically, in order to enable the spring chuck 3 to clamp and install ball screws of different sizes, the spring chuck 3 used in this embodiment is an ER spring chuck 3. At the same time, since the device can detect ball screws of different sizes, the ball screw needs to be disassembled and installed. In order to ensure that the reinstalled ball screw can be detected in a vertical state, a positioning seat 21 is provided on the mounting seat 1 so that the drive motor 12, the coupling 13, the spring chuck 3 and the ball screw are located on the same axis. Figure 6 : The bottom of the positioning seat 21 is provided with a mounting surface 22 fixedly connected to the drive motor 12, and the mounting surface 22 is provided with a motor hole 23 for setting the output shaft of the drive motor 12 inside the positioning seat 21. The positioning seat 21 is provided with a coupling accommodating space 24 for accommodating the coupling 13. The top of the positioning seat 21 is provided with a connecting hole 25 which is located on the same axis as the motor hole 23 and assists the spring clamp 3 to connect with the coupling 13.

[0029] Since the ball screw will perform continuous reciprocating rotational motion under the drive of the drive motor 12, in order to prevent the ball screw from rotating at an excessively large angle, causing the ball screw to become disconnected from the ball screw nut 9 and thus causing the detection device to be unable to operate smoothly, a limit member 16 is provided at the top of the ball screw to prevent the load-bearing device 4 from detaching from the ball screw. Specifically, in the present embodiment, the limit member 16 is a rubber collar fixed to the top of the ball screw by means of threads.

[0030] Certain words are used in the specification and claims of this utility model to refer to specific products. It should be understood by those with ordinary knowledge in the art that manufacturers may refer to the same components by different names. This document does not intend to distinguish between components that have the same function but different names. In the following specification and patent scope, the words "comprise", "have" and "include" are open-ended words and should be interpreted as "including but not limited to...".

[0031] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications are also considered to be within the protection scope of the present utility model.

Claims

1. A ball screw detection device, comprising a mounting seat (1), characterized in that: A driving device (2) for driving a vertically arranged ball screw to rotate is fixed to the lower part of the mounting seat (1); a spring chuck (3) capable of clamping ball screws of different sizes is connected to the upper part of the driving device (2); and a load-bearing device (4) driven to rise and fall by the rotation of the ball screw is installed on the upper part of the mounting seat (1).

2. A ball screw detection device according to claim 1, characterized in that: The load-bearing device (4) comprises a fixed mounting plate (5) mounted on the top of the base plate and driven to rise and fall by a ball screw, a load-bearing member (6) fixedly mounted on the fixed mounting plate (5), and a slider (7) arranged on the mounting plate to assist the fixed mounting plate (5) and the load-bearing member (6) in performing lifting and lowering movements. A mounting hole (8) is provided at the center of the fixed mounting plate (5), and a ball screw nut (9) is detachably mounted in the mounting hole (8).

3. A ball screw detection device according to claim 2, characterized in that: The load-bearing members (6) are provided in a pair and are vertically mounted in a symmetrical state on both sides of the fixed mounting plate (5).

4. A ball screw detection device according to claim 3, characterized in that: A plurality of weight-increasing parts (10) are detachably mounted on the weight-bearing part (6).

5. A ball screw detection device according to claim 2, characterized in that: The slider (7) is provided with a receiving space (11) inside, the inner diameter of the receiving space (11) matches the outer diameter of the load-bearing member (6), and the slider (7) is provided with a pair of sliders that are symmetrically mounted vertically on both sides of the fixed mounting plate (5).

6. A ball screw detection device according to claim 1, characterized in that: The driving device (2) comprises a driving motor (12) mounted on the bottom of the mounting seat (1), and a coupling (13) arranged on the output shaft of the driving motor (12), and the spring clamp (3) is fixedly connected to the top of the coupling (13).

7. A ball screw detection device according to claim 6, characterized in that: The mounting seat (1) is provided with a positioning seat (21) which enables the driving motor (12), the coupling (13), the spring chuck (3) and the ball screw to be located on the same axis.

8. A ball screw detection device according to claim 7, characterized in that: The bottom of the positioning seat (21) is provided with a mounting surface (22) fixedly connected to the drive motor (12); the mounting surface (22) is provided with a motor hole (23) for arranging the output shaft of the drive motor (12) inside the positioning seat (21); the positioning seat (21) is provided with a coupling accommodating space (24) for accommodating the coupling (13); and the top of the positioning seat (21) is provided with a connecting hole (25) which is coaxial with the motor hole (23) and assists the spring clamp (3) in connecting with the coupling (13).

9. A ball screw detection device according to claim 6, characterized in that: The spring chuck (3) comprises a fixing portion (14) fixedly connected to the coupling (13) and a mounting portion (15) for clamping and mounting the ball screw, wherein the mounting portion (15) is arranged above the fixing portion (14).

10. A ball screw detection device according to claim 1, characterized in that: A limiting member (16) is provided at the top of the ball screw to prevent the load-bearing device (4) from detaching from the ball screw.

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