Positioning device for ball screw

Abstract

The utility model discloses a positioning device for a ball screw, which belongs to the field of positioning devices and comprises a base, bearing seats, a lead screw and a ball nut, an arranged positioning mechanism is matched with the ball screw for use, and after the lead screw is movably connected between the bearing seats through rotating shafts at two ends, the bearing seats are mounted in concave plates on two sides of the top surface of the base. The concave plate installed in the concave plate is inserted into and penetrates through positioning holes formed in the top faces of installation blocks installed on the two sides of a rotating shaft, then a movable rod is pulled through a handle and rotated to enable a clamping block to be aligned with a vertical opening, and then the movable plate moves towards the inner side direction under the elastic recovery extension acting force of an extension spring; the bearing seat can be quickly positioned and mounted on the top surface of the base until the limiting rod is inserted into a limiting hole formed in the positioning rod, so that the purpose of quickly positioning and mounting the ball screw conveniently is achieved, the positioning and mounting operation is simple and convenient, and bolts and auxiliary tools are not needed.

Description

Technical Field

[0001] The utility model relates to the field of positioning devices, in particular to a positioning device for a ball screw. Background Art

[0002] Ball screws are ideal products for converting rotary motion into linear motion, or converting linear motion into rotary motion. Ball screws are the most commonly used transmission components in tool machinery and precision machinery. Their main function is to convert rotary motion into linear motion, or torque into axial repetitive force, while having the characteristics of high precision, reversibility and high efficiency. Due to their low friction resistance, ball screws are widely used in various industrial equipment and precision instruments.

[0003] In the prior art, the existing positioning device for ball screws is usually used by fixing the bearing seat on the machine tool base through bolts. However, the installation process of this positioning device requires the use of bolts and auxiliary tools, which makes the operation of installing the ball screw more cumbersome, and it is not easy to position the bearing seat, and the installation position of the bearing seat is easily offset, which brings inconvenience to the installation, positioning and use of the ball screw. Utility Model Content

[0004] The main purpose of the utility model is to provide a positioning device for a ball screw, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The camming mechanism is a kind of interlocking mechanism, and the interlocking mechanism is a kind of interlocking mechanism, and the interlocking mechanism is a kind of interlocking mechanism, and the interlocking mechanism is a kind of interlocking mechanism, and the interlocking mechanism is a kind of interlocking mechanism, and the interlocking mechanism is a kind of interlocking mechanism.

[0007] Preferably, mounting blocks are fixedly mounted on the bottom of both side walls of the rotating shaft, and positioning holes are formed on the top surfaces of the mounting blocks.

[0008] Preferably, a group of bilaterally symmetrical concave plates are fixedly installed on the top surface of the base, and a group of symmetrical positioning rods are fixedly installed on the inner bottom surface of the concave plates. The positioning rods are inserted into the positioning holes, and limiting holes are also opened on the side walls of the positioning rods.

[0009] Preferably, T-shaped grooves are respectively provided on the left and right sides of the inner bottom surface of the concave plate, and connecting holes are respectively provided on the inner side walls of the concave plate. Vertical openings connected to the connecting holes are also respectively provided on the inner side walls of the concave plate, and transverse slots are respectively provided on both sides of the outer wall of the concave plate.

[0010] Preferably, a T-shaped slider is fixedly installed at the bottom end of the movable plate, and the T-shaped slider is movably installed in the T-shaped slide groove, a limit rod is fixedly installed on the inner side wall of the movable plate, and the limit rod is inserted into the limit hole, and a convex groove is also opened on the outer side wall of the movable plate.

[0011] Preferably, the movable rod is inserted into the connecting hole, and a rotating block is fixedly installed on the inner end of the movable rod, the rotating block is movably installed in the convex groove, and a tension spring is mounted on the rod body of the rotating block, and the tension spring is fixedly installed between the inner side wall of the concave plate and the movable plate, a group of symmetrical blocks are fixedly installed on the outer wall of the movable rod, and a handle is also fixedly installed on the outer end of the movable rod.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model provides a positioning mechanism for use with a ball screw. After the screw is movably connected between the bearing seats through the rotating shafts at both ends, the bearing seats are installed inside the concave plates on both sides of the top surface of the base, and the concave plates installed in the concave plates are inserted into and pass through the positioning holes opened on the top surfaces of the mounting blocks installed on both sides of the rotating shaft. Then, the movable rod is pulled by a handle and the movable rod is rotated to align the clamping block with the vertical opening. Under the elastic recovery and stretching force of the tension spring, the movable plate is moved inwardly until the limit rod is inserted into the limit hole opened on the positioning rod. In this way, the bearing seat can be quickly positioned and installed on the top surface of the base, thereby achieving the purpose of facilitating the rapid positioning and installation of the ball screw. The positioning and installation operation is simple and convenient, without the need to use bolts and auxiliary tools, and the ball screw can be disassembled and maintained in time after a failure occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the bearing seat of the utility model;

[0016] Figure 3It is a schematic diagram of the structural disassembly of the positioning mechanism of the utility model.

[0017] In the figure: 1. base; 2. bearing seat; 3. screw; 4. rotating shaft; 5. ball nut; 6. positioning mechanism; 7. mounting block; 8. positioning hole; 9. concave plate; 10. positioning rod; 11. limiting hole; 12. T-shaped slide groove; 13. connecting hole; 14. vertical opening; 15. horizontal slot; 16. movable plate; 17. T-shaped slide block; 18. limiting rod; 19. convex groove; 20. movable rod; 21. rotating block; 22. tension spring; 23. clamping block; 24. handle. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1 - Figure 3 As shown, in this embodiment, in order to facilitate the positioning and installation of the ball screw and the subsequent disassembly and maintenance through the positioning mechanism 6, the specific use principle of the positioning mechanism 6 is as follows:

[0020] After the lead screw 3 is movably installed between the bearing seats 2 through the rotating shafts 4 at the left and right ends, and the rotating shafts 4 are interlaced and installed with the bearings in the bearing seats 2, the bearing seats 2 are installed inside the concave plates 9 installed on the left and right sides of the top surface of the base 1, and during the installation process, the symmetrical positioning holes 8 installed on the inner bottom surface of the concave plates 9 are respectively inserted into the positioning holes 8 opened on the top surfaces of the mounting blocks 7 installed on the bottom of both sides of the bearing seats 2. Then, the movable rod 20 is manually pulled outward by the handle 24, so that the symmetrical clamping blocks 23 installed on the outer wall of the movable rod 20 are moved outward. The concave plate 9 is moved out of the transverse slots 15 opened on both sides of the outer wall of the concave plate 9, and the movable rod 20 is rotated. The rotating block 21 installed on the inner end of the movable rod 20 will rotate in the convex groove 19 opened on the outer wall of the movable plate 16 until the block 23 is aligned with the vertical openings 14 opened on both sides of the inner wall of the concave plate 9. Then, the pulling force on the handle 24 is released. At this time, the tension spring 22 installed between the inner side wall of the concave plate 9 and the movable plate 16 and sleeved on the outside of the movable rod 20 will perform an extension recovery operation and push the movable plate 16 inward, and the movable plate 1 The T-shaped slider 17 installed on the bottom surface of the concave plate 9 will slide in the T-shaped slide groove 12 opened on the inner bottom surface of the concave plate 9, and the movable rod 20 will move along the connecting hole 13. At the same time, the block 23 will move in the vertical opening 14 until the limiting rod 18 installed on the inner wall of the movable plate 16 is inserted into the limiting hole 11 opened on the side wall of the positioning rod 10 passing through the positioning hole 8. In this way, the rotating shaft 4 can be quickly positioned and fixed on the top surface of the base 1, so as to achieve the purpose of facilitating the rapid positioning and installation of the ball screw, and the positioning and installation operation is simple. It is simple and convenient, without the need to use bolts and auxiliary tools, and can be disassembled and maintained in time after the ball screw fails. When disassembling, it is only necessary to manually pull the handle 24 to move the block 23 on the movable rod 20 out of the vertical opening 14, and then rotate the movable rod 20 to align the block 23 with the horizontal slot 15, release the pull on the handle 24, and stretch the spring 22 to extend. After the movable rod 20 is slightly moved by the movable plate 16, the block 23 is stuck in the horizontal slot 15 for limiting, and the rotating shaft 4 and the ball screw can be removed.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, various improvements may be made to the present invention and its components may be replaced by equivalents, or some of its technical features may be replaced by equivalents without departing from the scope of the present invention. All that is within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning device for a ball screw, comprising a base (1), a bearing seat (2), a lead screw (3) and a ball nut (5), characterized in that: The bearing seat (2) is fixedly connected to both sides of the top surface of the base (1) through a positioning mechanism (6), and the positioning mechanism (6) includes a concave plate (9), a positioning rod (10), a movable plate (16), a limit rod (18), a movable rod (20) and a tension spring (22). The top surface of the base (1) is fixedly connected with symmetrical concave plates (9), and the inner bottom surface of the concave plate (9) is fixedly connected with symmetrical positioning rods (10). The two movable plates (16) are movably connected to the concave plates (9) through T-shaped sliders (17) on the bottom surface. The movable plate (16) is provided with a movable bottom surface, and the limit rod (18) is fixedly connected to the outer wall of the movable plate (16); the movable rod (20) is movably connected to the movable plate (16) through a rotating block (21) at the inner end and is movably connected to the side wall of the concave plate (9); the tension spring (22) is sleeved on the outside of the rotating block (21) and is fixedly connected between the movable plate (16) and the inner wall of the concave plate (9); the lead screw (3) is movably connected between the bearing seats (2) through the rotating shafts (4) at both ends, and a ball nut (5) is also movably connected to the lead screw (3).

2. A positioning device for a ball screw according to claim 1, characterized in that: Mounting blocks (7) are fixedly mounted on the bottom of the two side walls of the rotating shaft (4), and positioning holes (8) are formed on the top surfaces of the mounting blocks (7).

3. A positioning device for a ball screw according to claim 2, characterized in that: A group of bilaterally symmetrical concave plates (9) are fixedly mounted on the top surface of the base (1), and a group of symmetrical positioning rods (10) are fixedly mounted on the inner bottom surface of the concave plates (9). The positioning rods (10) are inserted into the positioning holes (8), and a limiting hole (11) is also provided on the side wall of the positioning rods (10).

4. A positioning device for a ball screw according to claim 3, characterized in that: The inner bottom surface of the concave plate (9) is provided with T-shaped sliding grooves (12) on the left and right sides, and the inner side walls of the concave plate (9) are provided with connecting holes (13) on the right and left sides, and the inner side walls of the concave plate (9) are provided with vertical openings (14) connected with the connecting holes (13) on the right and left sides, and the outer wall of the concave plate (9) is provided with transverse slots (15) on the left and right sides.

5. A positioning device for a ball screw according to claim 4, characterized in that: A T-shaped slider (17) is fixedly mounted on the bottom end of the movable plate (16), and the T-shaped slider (17) is movably mounted in the T-shaped slide groove (12). A limiting rod (18) is fixedly mounted on the inner side wall of the movable plate (16), and the limiting rod (18) is inserted into the limiting hole (11). A convex groove (19) is also provided on the outer side wall of the movable plate (16).

6. A positioning device for a ball screw according to claim 5, characterized in that: The movable rod (20) is inserted into the connecting hole (13), and a rotating block (21) is fixedly installed on the inner end of the movable rod (20). The rotating block (21) is movably installed in the convex groove (19), and a tension spring (22) is sleeved on the rod body of the rotating block (21), and the tension spring (22) is fixedly installed between the inner side wall of the concave plate (9) and the movable plate (16). A group of symmetrical clamping blocks (23) are fixedly installed on the outer wall of the movable rod (20), and a handle (24) is also fixedly installed on the outer end of the movable rod (20).

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