Linear track ball screw

Abstract

The utility model discloses a linear track ball screw, and relates to the technical field of ball screws. The device comprises a U-shaped plate, the interior of the U-shaped plate is rotatably connected with a ball screw body, the top end of the U-shaped plate is slidably clamped with a moving seat, and the interior of the moving seat is rotatably connected with a bearing; through cooperation of a sliding rod, a U-shaped plate, a sliding rod, a through groove, a V-shaped groove, a limiting column, an inserting plate, a sliding plate and a spring, the bottom end of the inserting plate is pulled out of an inserting groove, a bearing rotates along with a ball screw body, and the moving base is limited to continue to move in the rotating direction of the ball screw body; and the inserting plate is pushed to move towards one side of the inserting groove under the elastic action of the spring, so that the bottom end of the inserting plate is inserted into the inserting groove again, the bearing can rotate along with the ball screw body, the moving direction of the moving seat is changed, the safety of the ball screw in use is further improved, and the moving seat is prevented from being collided and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screws, in particular to a linear track ball screw. Background Art

[0002] Ball screw is a transmission device that combines rotational motion with linear motion. It realizes precise displacement and positioning of mechanical equipment by rolling the ball between the screw thread and the nut. It has the characteristics of high speed, high precision, high rigidity and high load capacity, and is widely used in CNC machine tools, automation equipment, industrial machinery and other fields.

[0003] However, when the ball screw used in the traditional linear track moves the moving seat from one end of the linear track to the other end, a limit switch or an encoder is used to detect the position of the moving seat to avoid collision between the moving seat and one end of the linear guide rail. However, the limit switch or encoder may fail during frequent operation, resulting in squeezing and damage of the moving seat and one end of the track. In view of the above problems, the inventor proposes a linear track ball screw to solve the above problems. Utility Model Content

[0004] In order to solve the problem that the moving seat of the ball screw used in the traditional linear track may collide with one end of the linear guide rail during the conveying process of the moving seat; the purpose of the utility model is to provide a linear track ball screw.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a linear track ball screw comprises a U-shaped plate, the inside of the U-shaped plate is rotatably connected to the ball screw body, the top of the U-shaped plate is slidably clamped with a moving seat, the inside of the moving seat is rotatably connected with a bearing, the bearing is threadedly connected to the outside of the ball screw body, the top of the bearing is provided with a slot, the inside of the moving seat is provided with a slide groove, the inside of the slide groove is slidably clamped with an insert plate, the bottom end of the insert plate extends into the slot, one side of the insert plate is fixedly connected to a limiting column, the inside of the moving seat close to the slide groove is provided with a through groove, the inside of the through groove is slidably clamped with a sliding rod, one side of the sliding rod is provided with a V-shaped groove, the limiting column is slidably clamped in the V-shaped groove, the top of the U-shaped plate is fixedly connected with symmetrically distributed slide rails, the moving seat is slidably clamped on the outside of the slide rail, and the ball screw body is made of high-strength alloy steel or stainless steel.

[0006] Preferably, a mounting groove is provided inside the movable seat and above the slide groove, a slide plate is slidably engaged inside the mounting groove, a connecting rod is fixedly connected to the bottom end of the slide plate, the bottom end of the connecting rod extends into the slide groove and is fixedly connected to the plug plate, and a spring is provided between the top end of the slide plate and the top end of the inner wall of the mounting groove.

[0007] Preferably, one side of the movable seat and the bearing is provided with an oil filling hole, and the interiors of the two oil filling holes are communicated with each other.

[0008] Preferably, a telescopic water pipe is fixedly connected between one side of the movable seat and one side of the inner wall of the U-shaped plate, and the telescopic water pipe is movably sleeved on the outer side of the ball screw body.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The sliding rod contacts one end of the U-shaped plate and pushes the sliding rod to move along the inside of the through groove in the opposite direction to the moving seat. The cooperation between the V-shaped groove and the limit column is used to push the plug plate, the limit column and the slide plate to move upward, and compress the spring to make the bottom end of the plug plate withdrawn from the inside of the slot. Then the bearing rotates with the ball screw body to limit the moving seat from continuing to move in the direction of rotation of the ball screw body. When the ball screw body rotates in the opposite direction, the elastic force of the spring is used to push the plug plate to move to one side of the slot, so that the bottom end of the plug plate is reinserted into the inside of the slot, so that the bearing can rotate with the ball screw body, thereby changing the moving direction of the moving seat, further improving the safety of the ball screw during use, and preventing the moving seat from being damaged by collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a cross-sectional view of the utility model.

[0014] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0015] Figure 4 Partial cutaway view of the utility model Figure 1 .

[0016] Figure 5 This is a partial cutaway view of the utility model Figure 2 .

[0017] Figure 6 It is a structural schematic diagram of the bearing, slot and oil injection hole in the utility model.

[0018] In the figure: 1. U-shaped plate; 2. ball screw body; 3. moving seat; 4. bearing; 5. slot; 6. through slot; 7. slide bar; 8. V-shaped slot; 9. slide slot; 10. plug plate; 11. limit column; 12. mounting slot; 13. slide plate; 14. connecting rod; 15. spring; 16. oil filling hole; 17. telescopic water pipe; 18. slide rail. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example: Figure 1-6 As shown, the utility model provides a linear track ball screw, including a U-shaped plate 1, characterized in that: the U-shaped plate 1 is internally rotatably connected to a ball screw body 2, the ball screw body 2 is made of high-strength alloy steel or stainless steel, the top of the U-shaped plate 1 is slidably clamped with a moving seat 3, the moving seat 3 is internally rotatably connected to a bearing 4, the bearing 4 is threadedly connected to the outside of the ball screw body 2, a slot 5 is provided at the top of the bearing 4, a slide groove 9 is provided inside the moving seat 3, a plug plate 10 is slidably clamped inside the slide groove 9, the bottom end of the plug plate 10 extends into the slot 5, one side of the plug plate 10 is fixedly connected to a limiting column 11, a through groove 6 is provided on one side of the moving seat 3 close to the slide groove 9, a slide rod 7 is slidably clamped inside the through groove 6, a V-shaped groove 8 is provided on one side of the slide rod 7, and the limiting column 11 is slidably clamped in the V-shaped groove 8.

[0021] A mounting groove 12 is provided inside the movable seat 3 and above the slide groove 9. A slide plate 13 is slidably engaged inside the mounting groove 12. A connecting rod 14 is fixedly connected to the bottom end of the slide plate 13. The bottom end of the connecting rod 14 extends into the slide groove 9 and is fixedly connected to the plug plate 10. A spring 15 is provided between the top of the slide plate 13 and the top of the inner wall of the mounting groove 12.

[0022] By adopting the above technical solution and providing the spring 15 , the slide plate 13 can be easily reset, and the elastic force of the spring 15 can be used to make the insertion board 10 more tightly inserted into the slot 5 .

[0023] One side of the movable seat 3 and the bearing 4 is provided with an oil filling hole 16 , and the interiors of the two oil filling holes 16 are communicated with each other.

[0024] By adopting the above technical solution and providing the oil filling hole 16 , it is convenient to apply the lubricant to the outer side of the ball screw body 2 .

[0025] A telescopic water pipe 17 is fixedly connected between one side of the movable seat 3 and one side of the inner wall of the U-shaped plate 1 , and the telescopic water pipe 17 is movably sleeved on the outer side of the ball screw body 2 .

[0026] By adopting the above technical solution and providing the telescopic water pipe 17, it is convenient to carry out dustproof treatment on the ball screw body 2 to prevent dust, debris and the like from entering the interior of the mechanical device and affecting its normal operation and life.

[0027] The top end of the U-shaped plate 1 is fixedly connected with symmetrically distributed slide rails 18 , and the moving seat 3 is slidably engaged with the outer side of the slide rails 18 .

[0028] By adopting the above technical solution and providing the slide rail 18, the movable seat 3 can slide better.

[0029] Working principle: When the ball screw is used on the linear guide rail, the rotation of the ball screw body 2 drives the moving seat 3 to move horizontally along the top of the slide rail 18. When the moving seat 3 moves from one end of the U-shaped plate 1 to the other end, the slide bar 7 first contacts one end of the U-shaped plate 1 and pushes the slide bar 7 to move in the opposite direction of the moving seat 3 along the inside of the through groove 6. The V-shaped groove 8 and the limit column 11 are used to push the plug plate 10, the limit column 11 and the slide plate 13 to move upward, and the spring 15 is compressed to make the plug plate 1 0 is pulled out from the slot 5, releasing the restriction on the rotation of the bearing 4, and then the bearing 4 rotates together with the ball screw body 2, restricting the moving seat 3 from continuing to move in the direction of rotation of the ball screw body 2. When the ball screw body 2 rotates in the opposite direction, the elastic force of the spring 15 is used to push the insert plate 10 to move to one side of the slot 5, so that the bottom end of the insert plate 10 is reinserted into the slot 5, so that the bearing 4 can rotate with the ball screw body 2, thereby changing the moving direction of the moving seat 3, and so on.

[0030] By providing a telescopic water pipe 17, it is convenient to carry out dust-proof treatment on the ball screw body 2 to prevent dust, debris, etc. from entering the interior of the mechanical device and affecting its normal operation and life. By providing an oil filling hole 16, it is convenient to apply a lubricant to the outside of the ball screw body 2.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A linear track ball screw, comprising a U-shaped plate (1), characterized in that: The U-shaped plate (1) is rotatably connected to a ball screw body (2), and the top of the U-shaped plate (1) is slidably engaged with a moving seat (3). The moving seat (3) is rotatably connected to a bearing (4). The bearing (4) is threadedly connected to the outside of the ball screw body (2). The top of the bearing (4) is provided with a slot (5). The moving seat (3) is provided with a slide groove (9). The slide groove (9) is slidably engaged with a plug plate (10). The bottom end of the plug plate (10) extends into the slot (5). One side of the plug plate (10) is fixedly connected to a limiting column (11). The moving seat (3) is provided with a through groove (6) on one side close to the slide groove (9). The through groove (6) is slidably engaged with a slide rod (7). A V-shaped groove (8) is provided on one side of the slide rod (7). The limiting column (11) is slidably engaged in the V-shaped groove (8).

2. A linear track ball screw according to claim 1, characterized in that: A mounting groove (12) is provided inside the movable seat (3) and above the slide groove (9); a slide plate (13) is slidably engaged inside the mounting groove (12); a connecting rod (14) is fixedly connected to the bottom end of the slide plate (13); the bottom end of the connecting rod (14) extends into the slide groove (9) and is fixedly connected to the plug plate (10); a spring (15) is provided between the top end of the slide plate (13) and the top end of the inner wall of the mounting groove (12).

3. A linear track ball screw as claimed in claim 1, characterized in that: One side of the movable seat (3) and the bearing (4) is provided with an oil injection hole (16), and the interiors of the two oil injection holes (16) are communicated with each other.

4. A linear track ball screw as claimed in claim 1, characterized in that: A telescopic water pipe (17) is fixedly connected between one side of the movable seat (3) and one side of the inner wall of the U-shaped plate (1), and the telescopic water pipe (17) is movably sleeved on the outer side of the ball screw body (2).

5. A linear track ball screw as claimed in claim 1, characterized in that: The top end of the U-shaped plate (1) is fixedly connected to symmetrically distributed slide rails (18), and the movable seat (3) is slidably engaged with the outer side of the slide rails (18).

6. A linear track ball screw as claimed in claim 1, characterized in that: The ball screw body (2) is made of high-strength alloy steel or stainless steel.

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