Ball screw with guiding type circulation component

Abstract

The utility model relates to the technical field of linear actuating devices, in particular to a ball screw with a guide type circulating component, which comprises a screw and a nut coaxially sleeved on the screw, a spiral raceway is formed between the nut and the screw, and a return raceway is arranged in the nut along the axial direction of the nut; the circulator is arranged at the end part of the nut, and a guide channel connected with the spiral raceway is formed in the circulator and is used for guiding the balls to circulate; the sleeve is arranged on the circulator and inserted in the return raceway, a ball guide channel is arranged in the sleeve, the ball guide channel and the guide channel are communicated and matched with each other, and the inner diameter of one end, close to the guide channel, of the ball guide channel is smaller than that of other parts of the ball guide channel; and the balls are arranged in the spiral raceway, the return raceway, the guide channel and the ball guide channel in a rolling manner and circularly roll. The sleeve is arranged at the end part of the circulator, and the ball guide channel is arranged in the sleeve in a reducing manner, so that the impact point of the ball deviates towards the inner thick position, and the service life of a circulating part is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of linear actuating devices, and in particular to a ball screw with a guided circulating component. Background Art

[0002] With the continuous advancement of industrialization, the demand for high-speed, long-life ball screws in automated equipment continues to grow. Existing technical solutions primarily rely on an integrated circulation component to circulate the steel balls. While this circulation component offers the advantage of ease of installation, the existing through-hole design, parallel to the centerline of the nut, frequently causes significant impacts on the weak points at the entrance and exit of the circulation component due to the high-speed circulation of the steel balls, shortening the lifespan of the ball screw. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the weak parts of the existing circulation components are impacted by balls, which results in a reduction in the service life of the circulation components.

[0004] To this end, the utility model provides a ball screw with a guided circulation component.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A guided circulation component comprising:

[0007] Lead screw, and

[0008] A nut is coaxially sleeved on the lead screw, a spiral raceway is formed between the nut and the lead screw, and a return raceway is provided in the wall thickness of the nut along its axial direction;

[0009] A circulator is provided at the end of the nut and is provided with a guide channel connected to the spiral raceway to guide the ball circulation;

[0010] A sleeve, the sleeve being arranged on the circulator and inserted into the return raceway, the sleeve being provided with a ball guide channel, the ball guide channel being connected to and cooperating with the guide channel, the inner diameter of the ball guide channel at one end close to the guide channel being smaller than the inner diameter of the other parts of the ball guide channel;

[0011] The balls are arranged to roll in a spiral raceway, a return raceway, a guide groove and a ball guide channel.

[0012] Furthermore, a connecting surface is provided at one end of the ball guiding channel close to the guide channel, and the connecting surface is provided in an arc shape that bends toward the guide channel.

[0013] Furthermore, the sleeve is made of metal.

[0014] Furthermore, both ends of the return raceway are provided with embedding grooves for accommodating sleeves, the sleeves are inserted into the embedding grooves, and the ball guide channel and the return raceway are smoothly connected.

[0015] Furthermore, a slot is provided on the inner side wall of the embedding groove, and an inserting strip that plugs into and fits with the slot is connected to the outer side wall of the sleeve.

[0016] Furthermore, the circulator includes a mounting plate and a reflux block, the mounting plate is provided with mounting holes for fixing the circulator on a nut, and the guide channel is provided on the reflux block.

[0017] Furthermore, a connecting portion is provided on the reflux block, and an end portion of the connecting portion is provided with an abutting surface for abutting against the sleeve.

[0018] Furthermore, a mounting groove for mounting the circulator is provided at the end of the nut, and a baffle is connected to the end of the nut. The baffle is shielded at the end of the nut to press the circulator into the mounting groove.

[0019] Furthermore, an oil filling hole communicating with the circulating raceway is provided on the side wall of the nut.

[0020] The beneficial effect of the present invention is that, by arranging a sleeve at the end of the circulator and a ball guide channel with a variable diameter arranged in the sleeve, a certain angle is formed between the ball guide channel and the axis, and the angle is larger when entering the circulator from the ball guide channel, so that the impact point of the ball is offset to the position with thick inner flesh, thereby increasing the service life of the circulation component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 It is a structural schematic diagram of a ball screw with a guided circulation component in the utility model.

[0023] Figure 2 It is a structural diagram of the connection relationship between the circulator and the sleeve in the utility model.

[0024] Figure 3 It is a structural diagram of the nut in the utility model.

[0025] Figure 4 This utility model is used to embody Figure 3 DD-direction cross-sectional diagram of the center guide ball channel.

[0026] Figure 5 It is a structural diagram of the circulator in the utility model.

[0027] Figure 6 It is a structural diagram of the sleeve in the utility model.

[0028] Figure 7 It is a structural schematic diagram of the end connecting surface of the ball guide channel in the utility model.

[0029] Figure 8 It is a structural schematic diagram of the ball guide channel with gradually decreasing inner diameter in the utility model.

[0030] Figure 9 It is a schematic diagram of the ball impact circulator of the present invention.

[0031] In the figure: 1. Screw; 2. Nut; 21. Return raceway; 22. Mounting groove; 23. Baffle; 24. Oil filling hole; 25. Embedded groove; 3. Circulator; 31. Mounting plate; 32. Mounting hole; 33. Return block; 34. Connecting part; 35. Guide channel; 4. Sleeve; 41. Insert; 42. Ball guide channel; 43. Connecting surface; 5. Ball. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] A ball screw with a guided circulation component comprises the guided circulation component, a screw 1, a nut 2, and balls 5. The nut 2 is coaxially sleeved on the screw 1, forming a spiral raceway between the nut 2 and the screw 1. Several balls 5 are disposed within the spiral raceway. The balls 5 roll within the spiral raceway, causing the nut 2 to slide along the axial direction of the screw 1. A return raceway 21 is provided within the wall of the nut 2, extending axially along the nut 2 and communicating with both ends of the spiral raceway. The guided circulation component is embedded in the end of the nut 2.

[0036] The guided circulation component includes a circulator 3 and a sleeve 4. The circulator 3 includes a mounting plate 31 and a reflux block 33. The mounting plate 31 and reflux block 33 are integrally formed on the side of the mounting plate 31 facing the axis of the nut 2. The mounting plate 31 is provided with mounting holes 32 for securing the circulator 3 to the nut 2. The reflux block 33 is provided with a guide channel 35 to guide the circulation of the balls 5.

[0037] Both ends of the return raceway 21 are provided with slots 25 for accommodating the sleeve 4. The sleeve 4 is inserted into the slots 25. The inner sidewalls of the slots 25 are provided with slots. The outer sidewalls of the sleeve 4 are connected to insert strips 41 that engage with the slots to prevent the sleeve 4 from rotating within the return raceway 21. The return block 33 is provided with a connecting portion 34. The end of the connecting portion 34 is provided with an abutting surface that abuts the sleeve 4. The arrangement of the abutting surface and the slots 25 ensures that the sleeve 4 is stably pressed into the slots 25. A ball guide channel 42 is provided in the sleeve 4. The inner wall of the ball guide channel 42 is smoothly connected with the inner wall of the return raceway 21. The ball guide channel 42 is connected with the guide channel 35 and cooperates with each other. A connecting surface 43 is provided at one end of the ball guide channel 42 close to the guide channel 35. The connecting surface 43 is set to an arc curved toward the guide channel 35, so that the inner diameter of the end of the ball guide channel 42 close to the guide channel 35 is smaller than the inner diameter of other parts of the ball guide channel 42. In other embodiments, the ball guide channel 42 can also be set in a through hole whose inner diameter gradually decreases toward the guide channel 35.

[0038] The sleeve 4 is made of metal, and the inner wall of the ball guide channel 42 is gradually changed in the direction toward the guide channel 35 , so that the ball 5 can smoothly transition from the ball guide channel 42 to the circulator 3 , and the ball 5 can circulate and roll between the spiral raceway, the return raceway 21 , and the guide channel 35 .

[0039] The existing return raceway 21 is designed to be parallel to the center line of the nut 2 (such as Figure 6 Compared with the a small figure in the present application, the inner wall of the ball guide channel 42 is curved gradually toward the direction of the guide channel 35, referring to Figure 6As shown in the small figure b, the impact point of the steel ball on the rotating surface of the circulator 3 is moved toward the thick part of the circulator 3, thereby moving the impact area of the ball 5 toward the middle thick part, thereby improving the service life of the circulator 3.

[0040] An oil filling hole 24 communicating with the circulating raceway is provided on the side wall of the nut 2 , so as to facilitate oil filling into the raceway for lubrication and improve the rolling smoothness of the balls 5 .

[0041] Based on the above-described preferred embodiments of the present invention, and in accordance with the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A ball screw with a guided circulation component, characterized in that: include, a lead screw (1), and A nut (2), the nut (2) being coaxially sleeved on the lead screw (1), a spiral raceway being formed between the nut (2) and the lead screw (1), and a return raceway (21) being provided in the wall thickness of the nut (2) along its axial direction; A circulator (3) is provided at the end of the nut (2), and a guide channel (35) connected to the spiral raceway is provided on the circulator (3) to guide the balls (5) to circulate; A sleeve (4), the sleeve (4) is inserted into the return raceway (21) and abuts against the circulator (3), a ball guide channel (42) is provided in the sleeve (4), the ball guide channel (42) is communicated with the guide channel (35) and cooperates with each other, and the inner diameter of one end of the ball guide channel (42) close to the guide channel (35) is smaller than the inner diameter of the other parts of the ball guide channel (42); The balls (5) are arranged to roll in a spiral raceway, a return raceway (21), a guide channel (35), and a ball guide channel (42) for cyclic rolling.

2. The ball screw with a guided circulation component according to claim 1, characterized in that An end of the ball guide channel (42) close to the guide channel (35) is provided with a connection surface (43), and the connection surface (43) is configured to be an arc curved toward the guide channel (35).

3. The ball screw with a guided circulation component according to claim 1, characterized in that The sleeve (4) is made of metal.

4. The ball screw with a guided circulation component according to claim 1, characterized in that Both ends of the return raceway (21) are provided with embedding grooves (25) for accommodating a sleeve (4), the sleeve (4) is inserted into the embedding grooves (25), and the ball guide channel (42) is smoothly connected with the return raceway (21).

5. The ball screw with a guided circulation component according to claim 4, characterized in that: A slot is provided on the inner side wall of the embedding groove (25), and an inserting strip (41) that is plugged into and fits with the slot is connected to the outer side wall of the sleeve (4).

6. The ball screw with a guided circulation component according to claim 4, characterized in that The circulator (3) comprises a mounting plate (31) and a reflux block (33); the mounting plate (31) is provided with a mounting hole (32) for fixing the circulator (3) on the nut (2); and the guide channel (35) is provided on the reflux block (33).

7. The ball screw with a guided circulation component according to claim 6, characterized in that: The reflux block (33) is provided with a connecting portion (34), and an end portion of the connecting portion (34) is provided with an abutting surface for abutting against the sleeve (4).

8. The ball screw with a guided circulation component according to claim 1, characterized in that The end of the nut (2) is provided with a mounting groove (22) for mounting the circulator (3), and the end of the nut (2) is also connected to a baffle (23), which covers the end of the nut (2) and presses the circulator (3) into the mounting groove (22).

9. The ball screw with a guided circulation component according to claim 1, characterized in that: An oil injection hole (24) communicating with the circulation raceway is provided on the side wall of the nut (2).

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