Anti-vibration mechanism for high-speed operation of lengthened ball screw

Abstract

The utility model belongs to the technical field of high-speed operation vibration prevention of ball screws, and particularly relates to a high-speed operation vibration prevention mechanism of a lengthened ball screw, which comprises two bearing seats, the lengthened ball screw is rotatably connected between the two bearing seats, a nut seat is matched on the lengthened ball screw, and a mounting plate is fixedly connected between the two bearing seats. A linear guide assembly is mounted on the mounting plate, two connecting plates are fixedly connected to a movable part of the linear guide assembly, and the two connecting plates are fixedly connected through a connecting assembly; the lengthened ball screw is sleeved with two supporting sleeves, the two supporting sleeves are located on the two sides of the nut base respectively, sliding holes matched with the lengthened ball screw in a sliding mode are formed in the two supporting sleeves in a penetrating mode, the two supporting sleeves are fixedly connected with the two connecting plates respectively, the two supporting sleeves are fixedly connected with buffering bases, and buffering components are installed on the two buffering bases. According to the utility model, the lengthened ball screw can be effectively supported, and the lengthened ball screw is prevented from vibrating during operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of lengthened ball screw high-speed operation anti-vibration mechanisms, belong to ball screw high-speed operation anti-vibration technical field. BACKGROUND

[0002] In the machining, manufacturing industry, with the continuous development and progress of technology, more and more large-scale machine tools and automation equipment are also more and more widely used. Some large-scale machine tools and automation equipment need to use lengthened ball screws in application, and the stroke of some lengthened ball screws even reaches three or four meters. For example, in the tire detection industry, small-angle steel cord cutting machine is needed to cut tire belt. The ball screw used by small-angle steel cord cutting machine is too long, and it is prone to vibration when running at high speed. Therefore, it cannot run at high speed in actual production, resulting in low productivity.

[0003] With the development of technology, the Chinese utility model patent with the authorization announcement number CN212886418U discloses a long rod ball screw anti-dropping anti-shock support mechanism. Its principle is to install two rollers below the ball screw to support the ball screw, and to use a pneumatic mechanical valve long block and a pneumatic mechanical reversing valve to drive the cylinder to contract and drive the rollers to move downward to avoid the nut seat. Although it can effectively solve the vibration problem of lengthened ball screw running at high speed, the cylinder and the rollers can only be installed directly below the ball screw, which cannot be used when there is no installation space below the ball screw, and has certain use limitations. In addition, when the pneumatic mechanical valve long block and the pneumatic mechanical reversing valve fail to cooperate, the hard collision between the nut seat moving at high speed and the end surface of the roller will cause certain safety hazards. UTILITY MODEL CONTENTS

[0004] According to the deficiencies in the above prior art, the technical problem to be solved by the utility model is to provide a lengthened ball screw high-speed operation anti-vibration mechanism with good applicability and high safety.

[0005] The lengthened ball screw high-speed operation anti-vibration mechanism comprises two bearing seats, a lengthened ball screw rotatably connected between the two bearing seats, a nut seat adapted to the lengthened ball screw, a mounting plate fixedly connected between the two bearing seats, a linear guide assembly parallel to the lengthened ball screw mounted on the mounting plate, two connecting plates fixedly connected to the movable part of the linear guide assembly, and a connecting assembly fixedly connected between the two connecting plates. Two support sleeves are sleeved on the lengthened ball screw, and the two support sleeves are located on the two sides of the nut seat respectively. Sliding holes slidingly adapted to the lengthened ball screw are formed in the two support sleeves. The two support sleeves are fixedly connected to the two connecting plates. Buffer seats are fixedly connected to the two support sleeves. Buffer components are mounted on the two buffer seats.

[0006] Further, the linear guide assembly comprises a linear guide rail fixedly connected to the mounting plate, and two sliding blocks are slidably fitted on the linear guide rail, and the two connecting plates are fixedly connected with the two sliding blocks respectively.

[0007] Further, the support sleeve is formed by two nylon monomers in abutment, and the two nylon monomers and the buffer seat are fixedly connected to the connecting plate by bolts.

[0008] Further, the buffer component is a hydraulic buffer, and the anti-collision cap of the hydraulic buffer corresponds to the nut seat.

[0009] Further, the connecting assembly comprises two ear plates fixedly connected with the two connecting plates respectively, and a connecting rod is fixedly connected between the two ear plates.

[0010] Further, mounting sleeves are arranged on the two ear plates respectively, the two ends of the connecting rod penetrate through the two mounting sleeves respectively, and lock nuts are threadedly connected to the two ends of the connecting rod.

[0011] Working principle and process:

[0012] When the lengthened ball screw is operated in the forward and reverse directions, the nut seat reciprocates along the lengthened ball screw, when the nut seat moves to the right and touches the anti-collision cap on the right side, the nut seat will drive the right support sleeve to move to the right under the sliding cooperation of the linear guide rail and the sliding block after being buffered by the hydraulic buffer, and simultaneously, the right support sleeve moving to the right will drive the left support sleeve to move to the right through the connecting plate, the ear plate and the connecting rod; similarly, when the nut seat moves to the left, the nut seat will drive the left support sleeve to move to the left and synchronously drive the right support sleeve to move to the left; since the two support sleeves can reciprocate with the nut seat, the arrangement of the two support sleeves will not affect the normal operation of the nut seat, and the two support sleeves can support the lengthened ball screw, effectively shorten the length of the lengthened ball screw in the air, and thus the lengthened ball screw can be effectively prevented from vibrating.

[0013] The utility model has the beneficial effects compared with prior art:

[0014] The lengthened ball screw high-speed operation anti-vibration mechanism can effectively support the lengthened ball screw, prevent the lengthened ball screw from vibrating during operation, and thus effectively improve the operation speed of the lengthened ball screw in actual production and improve the production capacity. DRAWINGS

[0015] Figure 1 is a structural schematic view of an embodiment of the utility model;

[0016] Figure 2 is Figure 1 is an enlarged view of A in figure 1;

[0017] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0018] Figure 4 yes Figure 1 Enlarged view of point C in the middle.

[0019] In the diagram: 1. Extended ball screw; 2. Mounting plate; 3. Bearing housing; 4. Nut seat; 5. Hydraulic buffer; 6. Support sleeve; 7. Buffer seat; 8. Anti-collision cap; 9. Sliding hole; 10. Locking nut; 11. Mounting sleeve; 12. Ear plate; 13. Connecting plate; 14. Connecting rod; 15. Linear guide rail; 16. Slider; 17. Bolt. Detailed Implementation

[0020] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0021] Example 1:

[0022] like Figures 1 to 4 As shown, the extended ball screw high-speed operation anti-vibration mechanism of this utility model includes two bearing seats 3, an extended ball screw 1 rotatably connected between the two bearing seats 3, a nut seat 4 adapted on the extended ball screw 1, a mounting plate 2 fixedly connected between the two bearing seats 3, a linear guide assembly parallel to the extended ball screw 1 mounted on the mounting plate 2, two connecting plates 13 fixedly connected to the movable part of the linear guide assembly, and the two connecting plates 13 fixedly connected to each other through the connecting assembly; two support sleeves 6 are fitted on the extended ball screw 1, the two support sleeves 6 are located on both sides of the nut seat 4, and each support sleeve 6 has a sliding hole 9 through it that is adapted to slide on the extended ball screw 1; the two support sleeves 6 are fixedly connected to the two connecting plates 13, and a buffer seat 7 is fixedly connected to each support sleeve 6, and a buffer component is mounted on each buffer seat 7.

[0023] When the extended ball screw 1 rotates in both directions, the nut seat 4 reciprocates along the extended ball screw 1. When the nut seat 4 moves to the right, it touches the buffer component on the right side. After being buffered by the buffer component, the nut seat 4 will drive the right support sleeve 6 to move to the right under the action of the linear guide component. At the same time, the right support sleeve 6 moving to the right will also drive the left support sleeve 6 to move to the right through the connecting component. Similarly, when the nut seat 4 moves to the left, the nut seat 4 will push the left support sleeve 6 to move to the left, and simultaneously drive the right support sleeve 6 to move to the left. Since the two support sleeves 6 can reciprocate with the nut seat 4, the setting of the two support sleeves 6 will not affect the normal operation of the nut seat 4. The two support sleeves 6 can support the extended ball screw 1, effectively shortening the suspended length of the extended ball screw 1, thus effectively preventing the extended ball screw 1 from vibrating.

[0024] Example 2:

[0025] likeFigures 1 to 4 As shown in the embodiment 1,

[0026] Further, the linear guide assembly comprises a linear guide rail 15 fixedly connected to the mounting plate 2, two sliding blocks 16 are slidably fitted on the linear guide rail 15, and the two connecting plates 13 are fixedly connected with the two sliding blocks 16, respectively. The connecting plate 13 and the supporting sleeve 6 are supported and guided through the cooperation of the linear guide rail 15 and the sliding block 16, which is simple in structure and stable in operation.

[0027] Further, the supporting sleeve 6 is formed by butt joint of two nylon monomers, and the two nylon monomers and the buffer seat 7 are fixedly connected to the connecting plate 13 through the bolt 17. The supporting sleeve 6 is made of nylon material, which has low friction coefficient, good self-lubricating performance, strong wear resistance and is convenient for processing. The supporting sleeve 6 adopts the butt joint form, which is convenient for installing and transforming the existing equipment.

[0028] Further, the buffer component is a hydraulic buffer 5, and the anti-collision cap 8 of the hydraulic buffer 5 corresponds to the nut seat 4. The buffer component adopts the hydraulic buffer 5, which can be directly purchased, and has good buffering effect.

[0029] Further, the connecting assembly comprises two ear plates 12, the two ear plates 12 are fixedly connected with the two connecting plates 13, respectively, and the connecting rod 14 is fixedly connected between the two ear plates 12. When one of the connecting plates 13 moves, the other connecting plate 13 can be driven to move through the ear plate 12 and the connecting rod 14, which is simple in structure and has good synchronization effect.

[0030] Further, the two ear plates 12 are provided with mounting sleeves 11, respectively, the two ends of the connecting rod 14 penetrate through the two mounting sleeves 11, respectively, and the two ends of the connecting rod 14 are threadedly connected with the locking nuts 10, respectively. By disassembling the locking nuts 10, the connecting rod 14 with different lengths can be replaced according to the needs, thereby improving the applicability.

[0031] It is particularly pointed out that: in the description of the utility model, the directions or position relations indicated by the terms "left", "right" and the like are the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model, and are not required to construct and operate the utility model in a specific direction, therefore, it cannot be understood as a limitation on the utility model.

Claims

1. A lengthened ball screw high-speed running anti-shaking mechanism, comprising two bearing seats (3), a lengthened ball screw (1) is rotatably connected between the two bearing seats (3), and a nut seat (4) is adapted on the lengthened ball screw (1), characterized in that: Two bearing seats (3) are fixedly connected with mounting plates (2), the mounting plates (2) are provided with linear guide assemblies parallel to the lengthened ball screw (1), the movable parts of the linear guide assemblies are fixedly connected with two connecting plates (13), the two connecting plates (13) are fixedly connected through connecting assemblies; the lengthened ball screw (1) is sleeved with two supporting sleeves (6), the two supporting sleeves (6) are located on the two sides of the nut seat (4) respectively, the two supporting sleeves (6) are all penetrated through sliding holes (9) slidably matched with the lengthened ball screw (1), the two supporting sleeves (6) are fixedly connected with the two connecting plates (13) respectively, the two supporting sleeves (6) are all fixedly connected with buffer seats (7), and the two buffer seats (7) are all provided with buffer parts.

2. The long-length ball screw high-speed rotation chatter-preventing mechanism according to claim 1, characterized by: The linear guide assembly comprises linear guides (15) fixedly connected with the mounting plates (2), and the two connecting plates (13) are fixedly connected with two sliders (16) slidably matched with the linear guides (15).

3. The anti-chattering mechanism for a long ball screw according to claim 1, wherein: The supporting sleeve (6) is formed by two nylon monomers in butt joint, and the two nylon monomers and the buffer seat (7) are fixedly connected with the connecting plate (13) through bolts (17).

4. The anti-chattering mechanism for a long ball screw according to claim 1, wherein: The buffer part is a hydraulic buffer (5), and the anti-collision cap (8) of the hydraulic buffer (5) corresponds to the nut seat (4).

5. The anti-chattering mechanism for high speed operation of the long ball screw according to any one of claims 1 to 4, characterized in that: The connecting assembly comprises two ear plates (12), the two ear plates (12) are fixedly connected with the two connecting plates (13), and the two ear plates (12) are fixedly connected with connecting rods (14).

6. The anti-chattering mechanism for a long ball screw according to claim 5, wherein: Two mounting sleeves (11) are arranged on the two ear plates (12), the two ends of the connecting rod (14) penetrate through the two mounting sleeves (11) respectively, and the two ends of the connecting rod (14) are threadedly connected with lock nuts (10).

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