Assembling and positioning tool for ball screw pair

Abstract

The utility model relates to an assembling and positioning tool for a ball screw pair, which belongs to the technical field of ball screw pair assembling and comprises a mounting table, a nut fixedly connected to the top of the mounting table, a plurality of effective raceways arranged inside the nut, a plurality of steel balls assembled inside the effective raceways, and a rod-shaped object arranged at the bottom of the mounting table. The top end of the rod-shaped object extends into the nut and penetrates through the mounting table, a positioning tool body is arranged at the bottom of the mounting table and comprises a cylinder and a limiting table, the limiting table is fixedly connected to the outer side of the cylinder, and one end of the cylinder extends into the nut. The utility model has the beneficial effects that when the steel ball needs to be mounted, the rod-shaped object can directly extend into the cylinder, and the outer side of the rod-shaped object is attached to the inner wall of the cylinder, so that the rod-shaped object and the nut are in a coaxial state, the rod-shaped object can be quickly and accurately positioned, the assembly task of the steel ball can be quickly completed, and the assembly efficiency is improved. The assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screw pair assembly, in particular to an assembly and positioning tool for a ball screw pair. Background Art

[0002] A ball screw pair, also known as a ball screw pair or ball screw pair, is a transmission device consisting of a screw and a nut. It is composed of screws, nuts, balls and other parts. It is a high-precision and widely used transmission mechanism. The assembly of the ball screw pair is an important part of the screw pair, and its assembly efficiency greatly affects the entire product production cycle.

[0003] When assembling the ball screw pair, it is necessary to use a rod to extend into the center of the nut. A cavity is formed between the rod and the inner wall of the nut. Then the steel ball is put into the cavity and the steel ball is manually moved with a lever so that the steel ball enters the effective raceway of the nut. After all the steel balls in the nut are assembled, the rod is pulled out.

[0004] However, with this assembly method, it is difficult to accurately place the rod in the center of the nut in one go, which requires repeated adjustments during the assembly of the steel ball, thereby reducing the assembly efficiency of the ball screw pair. Utility Model Content

[0005] In view of the above problems existing in the prior art, the main purpose of the present invention is to provide an assembly and positioning tool for a ball screw pair.

[0006] The technical solution of the present utility model is as follows: an assembly and positioning tool for a ball screw pair, comprising a mounting platform, a nut fixedly connected to the top of the mounting platform, a plurality of effective raceways opened inside the nut, a plurality of steel balls assembled inside the effective raceways, a rod-shaped object provided at the bottom of the mounting platform, the top end of the rod-shaped object extends to the interior of the nut and passes through the mounting platform, a positioning tool body is provided at the bottom of the mounting platform, the positioning tool body comprises a cylinder and a limit platform, the limit platform is fixedly connected to the outside of the cylinder, one end of the cylinder extends to the interior of the nut, the inner wall of the nut is fixedly connected with a step, and the top end of the cylinder abuts against the step inside the nut.

[0007] By adopting the above technical solution, the rod is directly inserted into the cylinder, and the outer side of the rod is fitted with the inner wall of the cylinder, so that the rod and the nut can be made coaxial, thereby achieving rapid and accurate positioning of the rod, so as to quickly complete the assembly task of the steel ball.

[0008] As a preferred embodiment, the limiting platform is in contact with the bottom end of the mounting platform, the outer side of the cylinder is coaxial with the inner wall of the nut, and the rod is coaxial with the cylinder.

[0009] By adopting the above technical solution and using the cylinder and the limiting platform in coordination, the rod and the nut can be placed coaxially.

[0010] As a preferred embodiment, the rod-shaped object includes an adjusting arc plate, a fixing rod, a fixing sleeve, a first connecting rod, a second connecting rod, a threaded sleeve, a rotating sleeve and an external thread.

[0011] By adopting the above technical solution, the rod-shaped object as a whole can be formed through the above structure.

[0012] As a preferred embodiment, four adjusting arc plates are provided, and the fixing rod is provided between the four adjusting arc plates. Both ends of the outer side of the fixing rod are fixedly connected with a fixing sleeve, and a first connecting rod is equidistantly installed on the outer side of the fixing sleeve for rotation, and the end of the first connecting rod away from the fixing sleeve is rotatably connected to the corresponding inner wall of the adjusting arc plate.

[0013] By adopting the above technical solution and arranging the first connecting rod and the fixing sleeve, the adjustment arc plate can be made more stable during the unfolding process.

[0014] As a preferred embodiment, the bottom end of the outer side of the fixed rod is provided with an external thread, the external thread is threadedly connected to a threaded sleeve, the top of the threaded sleeve is rotatably connected to a rotating sleeve, the outer side of the rotating sleeve is equidistantly rotatably connected to a second connecting rod, and the end of the second connecting rod away from the threaded sleeve is rotatably connected to the corresponding inner wall of the adjustment arc plate.

[0015] By adopting the above technical solution, the threaded sleeve is rotated to move on the external thread, and then the second connecting rod can be used to slowly unfold the adjusting arc plate, so that the adjusting arc plate is fit with the inner wall of the cylinder, thereby preventing the rod and the nut from having different axial centers.

[0016] As a preferred embodiment, the outer side of the adjusting arc plate is in contact with the inner wall of the cylinder.

[0017] By adopting the above technical solution, the rod-shaped object and the positioning tool body can be in a coaxial state.

[0018] As a preferred embodiment, a plurality of mounting holes are provided at both ends of the interior of the mounting platform.

[0019] By adopting the above technical solution, the mounting platform can be assembled as a whole.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are:

[0021] 1. In the present invention, when the steel ball needs to be installed, the rod can be directly inserted into the cylinder, and the outer side of the rod fits into the inner wall of the cylinder, so that the rod and the nut are coaxial, thereby achieving rapid and accurate positioning of the rod, so as to quickly complete the assembly task of the steel ball and improve assembly efficiency.

[0022] 2. In the present invention, when it is necessary to assemble steel balls on nuts of different sizes, the size of the positioning tool body will also be changed accordingly. At this time, the threaded sleeve can be rotated to move the rotating sleeve on the external thread, and then the second connecting rod can be used to slowly unfold the adjusting arc plate, so that the adjusting arc plate is in contact with the inner wall of the cylinder, thereby preventing the rod and the nut from having different axial centers, thereby improving applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model provides an overall three-dimensional diagram of an assembly and positioning tool for a ball screw pair;

[0024] Figure 2 An exploded view of an assembly and positioning tool for a ball screw pair is provided for the utility model;

[0025] Figure 3 The utility model provides a schematic structural diagram of a rod-shaped object of an assembly and positioning tool for a ball screw pair.

[0026] Legend: 1. Mounting platform; 2. Nut; 3. Positioning tool body; 4. Rod-shaped object; 5. Effective raceway; 6. Steel ball; 7. Adjusting arc plate; 8. Fixed rod; 9. Fixed sleeve; 10. First connecting rod; 11. Second connecting rod; 12. Threaded sleeve; 13. Rotating sleeve; 14. External thread; 15. Cylinder; 16. Limiting platform. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] Reference Figure 1-3A ball screw assembly positioning tool comprises a mounting platform 1, a nut 2 is fixedly connected to the top of the mounting platform 1, a plurality of effective raceways 5 are provided inside the nut 2, a plurality of steel balls 6 are assembled inside the effective raceways 5, a rod 4 is provided at the bottom of the mounting platform 1, the top of the rod 4 extends to the inside of the nut 2 and passes through the mounting platform 1, a positioning tool body 3 is provided at the bottom of the mounting platform 1, the positioning tool body 3 comprises a cylinder 15 and a limit platform 16, the limit platform 16 is fixedly connected to the cylinder 1 5, one end of the cylinder 15 extends to the inside of the nut 2, the inner wall of the nut 2 is fixedly connected with a step, and the top of the cylinder 15 abuts against the inner step of the nut 2. When the steel ball 6 needs to be installed, the rod 4 can be directly inserted into the cylinder 15, and the outer side of the rod 4 fits with the inner wall of the cylinder 15, so that the rod 4 and the nut 2 are coaxial, so that the rod 4 can be quickly and accurately positioned, so as to quickly complete the assembly task of the steel ball 6 and improve the assembly efficiency.

[0029] Reference Figure 2 The limit platform 16 is in contact with the bottom end of the mounting platform 1, the outer side of the cylinder 15 is in contact with the inner wall of the nut 2, and the rod 4 is coaxial with the cylinder 15. By coordinating the cylinder 15 with the limit platform 16, the rod 4 and the nut 2 can be coaxial, which can reduce the number of tests during the assembly of the steel ball 6.

[0030] Reference Figure 3 The rod-shaped object 4 includes an adjusting arc plate 7, a fixing rod 8, a fixing sleeve 9, a first connecting rod 10, a second connecting rod 11, a threaded sleeve 12, a rotating sleeve 13 and an external thread 14. The above structure can constitute the rod-shaped object 4 as a whole.

[0031] Reference Figure 3 There are four adjusting arc plates 7, and the fixing rods 8 are arranged between the four adjusting arc plates 7. The two ends of the outer side of the fixing rods 8 are fixedly connected with the fixing sleeves 9. The outer side of the fixing sleeve 9 is equidistantly rotatably installed with a first connecting rod 10. The end of the first connecting rod 10 away from the fixing sleeve 9 is rotatably connected to the corresponding inner wall of the adjusting arc plate 7. Through the arrangement of the first connecting rod 10 and the fixing sleeve 9, the adjusting arc plate 7 can be made more stable during the deployment process and is not prone to shaking, so as to improve the stability of the structure.

[0032] Reference Figure 3The bottom end of the outer side of the fixed rod 8 is provided with an external thread 14, and the external thread 14 is threadedly connected to the threaded sleeve 12. The top of the threaded sleeve 12 is rotatably connected to the rotating sleeve 13. The outer side of the rotating sleeve 13 is equidistantly rotatably connected to the second connecting rod 11. The end of the second connecting rod 11 away from the threaded sleeve 12 is rotatably connected to the corresponding inner wall of the adjusting arc plate 7. When it is necessary to assemble the steel ball 6 for nuts 2 of different sizes, the size of the positioning tool body 3 will also be changed. At this time, the threaded sleeve 12 can be rotated to make the rotating sleeve 13 move on the external thread 14, and then the second connecting rod 11 can be used to slowly expand the adjusting arc plate 7, so that the adjusting arc plate 7 is in contact with the inner wall of the cylinder 15, thereby preventing the rod 4 and the nut 2 from having different axial centers, thereby improving applicability.

[0033] Reference Figure 2 , adjust the outer side of the arc plate 7 to fit with the inner wall of the cylinder 15, so that the rod 4 and the positioning tool body 3 can be in a coaxial state.

[0034] Reference Figure 1 A plurality of mounting holes are provided at both ends of the interior of the mounting platform 1 to facilitate the overall assembly of the mounting platform 1 .

[0035] Working principle: When the steel ball 6 needs to be installed, the rod 4 can be directly inserted into the cylinder 15, and the outer side of the rod 4 fits into the inner wall of the cylinder 15, so that the rod 4 and the nut 2 are coaxial, thereby achieving rapid and accurate positioning of the rod 4. At this time, a cavity is formed between the rod 4 and the inner wall of the nut 2, and then the steel ball 6 is put into the cavity, and the steel ball 6 is manually moved with the lever to make the steel ball 6 enter the effective raceway 5 of the nut 2. After all the steel balls 6 in the nut 2 are assembled, the rod 4 is pulled out to achieve the purpose of assembling the steel balls 6.

[0036] When it is necessary to assemble the steel balls 6 on nuts 2 of different sizes, the size of the positioning tool body 3 will also be changed. At this time, the threaded sleeve 12 can be rotated to move the rotating sleeve 13 on the external thread 14, and then the second connecting rod 11 can be used to slowly unfold the adjusting arc plate 7, so that the adjusting arc plate 7 is in contact with the inner wall of the cylinder 15, thereby preventing the rod 4 and the nut 2 from having different axial centers, thereby improving applicability.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" 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, or it can be a connection between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0038] The above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An assembly and positioning tool for a ball screw pair, comprising a mounting table (1), characterized in that: The top of the mounting platform (1) is fixedly connected to a nut (2), a plurality of effective raceways (5) are provided inside the nut (2), and a plurality of steel balls (6) are assembled inside the effective raceways (5). A rod (4) is provided at the bottom of the mounting platform (1), and the top end of the rod (4) extends to the inside of the nut (2) and passes through the mounting platform (1). A positioning tool body (3) is provided at the bottom of the mounting platform (1), and the positioning tool body (3) includes a cylinder (15) and a limit platform (16). The limit platform (16) is fixedly connected to the outside of the cylinder (15), and one end of the cylinder (15) extends to the inside of the nut (2). The inner wall of the nut (2) is fixedly connected to a step, and the top end of the cylinder (15) abuts against the step inside the nut (2).

2. The assembly and positioning tool for a ball screw pair according to claim 1, characterized in that: The limiting platform (16) is in contact with the bottom end of the mounting platform (1), the outer side of the cylinder (15) is coaxial with the inner wall of the nut (2), and the rod (4) is coaxial with the cylinder (15).

3. The assembly and positioning tool for a ball screw pair according to claim 1, characterized in that: The rod-shaped object (4) comprises an adjusting arc plate (7), a fixing rod (8), a fixing sleeve (9), a first connecting rod (10), a second connecting rod (11), a threaded sleeve (12), a rotating sleeve (13) and an external thread (14).

4. The assembly and positioning tool for a ball screw pair according to claim 3, characterized in that: Four adjusting arc plates (7) are provided, and the fixing rods (8) are provided between the four adjusting arc plates (7). Both ends of the outer sides of the fixing rods (8) are fixedly connected to fixing sleeves (9), and a first connecting rod (10) is equidistantly rotatably mounted on the outer sides of the fixing sleeves (9). The ends of the first connecting rods (10) away from the fixing sleeves (9) are rotatably connected to the inner walls of the corresponding adjusting arc plates (7).

5. The assembly and positioning tool for a ball screw pair according to claim 3, characterized in that: The bottom end of the outer side of the fixed rod (8) is provided with an external thread (14), the external thread (14) is threadedly connected to a threaded sleeve (12), the top end of the threaded sleeve (12) is rotatably connected to a rotating sleeve (13), the outer side of the rotating sleeve (13) is equidistantly rotatably connected to a second connecting rod (11), and the end of the second connecting rod (11) away from the threaded sleeve (12) is rotatably connected to the inner wall of the corresponding adjustment arc plate (7).

6. The assembly and positioning tool for a ball screw pair according to claim 3, characterized in that: The outer side of the regulating arc plate (7) is in contact with the inner wall of the cylinder (15).

7. The assembly and positioning tool for a ball screw pair according to claim 1, characterized in that: A plurality of mounting holes are provided at both ends of the interior of the mounting platform (1).

Images