Precise ball curve guide rail

Abstract

The utility model relates to the technical field of curve guide rails, and discloses a precise ball curve guide rail, which comprises a guide rail, a sliding seat, a rail groove, a communication groove, a ball, a mounting hole, a support shaft, a sleeve and a spring, and the spring in support connection with a limiting piece is arranged in the sleeve. The sliding seat can slide in a rolling mode in the rail groove in the guide rail through the balls at the end of the supporting shaft, when the sliding seat slides to the position of the bend portion of the guide rail, the contact pressure of the balls on the inner side of the guide rail is large, and at the moment, when the sliding seat slides, the sliding seat can slide and stretch out and draw back through the sleeve outside the supporting shaft. One end of the supporting shaft located in the sleeve can extrude the spring through the limiting piece, at the moment, the sliding seat can be supported and buffered through the spring, large pressure on the balls is avoided, the protection pad wrapping the balls can conduct certain protection through the characteristics of the protection pad, direct friction of the balls is avoided, and the service life of the balls is prolonged. Therefore, the service life of the ball is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of curved guide rails, in particular to a precision ball curved guide rail. Background Technique

[0002] A guide rail is a kind of rolling guide, which is used to support and guide moving parts. It consists of steel balls that make infinite rolling cycles between the slider and the slide rail, enabling the load platform to move linearly along the slide rail easily with high precision. It has a wide range of applications in various precision CNC machine tools and the machinery manufacturing industry.

[0003] When the existing curved guide rail is used for support, the slide seat outside the guide rail will make a turning movement along the guide rail. When the steel balls inside the slide seat roll to the curved part in the inner rail groove of the guide rail, the friction force on the steel balls themselves will increase, resulting in high wear of the steel balls during long-term rolling movement and limited service life. Therefore, we propose a precision ball curved guide rail. Content of the Utility Model

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art, and provides a precision ball curved guide rail.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme. A precision ball curved guide rail includes a guide rail and a slide seat. A rail groove is opened inside the guide rail. Communication grooves connected to the rail groove are opened on both sides of the guide rail. Steel balls are movably clamped inside the rail groove. An installation hole is opened inside the steel ball. A support shaft is rotatably connected to the inner side of the installation hole. A sleeve is slidably sleeved outside the support shaft. One end of the sleeve is fixedly connected and matched with the inner side of the slide seat. The end of the support shaft is limited and clamped with the inside of the sleeve through a limiting member. A spring that supports and connects with the limiting member is arranged inside the sleeve.

[0006] Preferably, when the inner side of the slide seat slides through the steel ball at the end of the support shaft and the inner side of the rail groove, the inner side of the slide seat is in a telescopic movement state with the outside of the support shaft through the sleeve, and the spring inside the sleeve is in a supporting and buffering state for the limiting member at the end of the support shaft.

[0007] Preferably, a protective pad is sleeved and wrapped outside the steel ball, and the protective pad has its own deformation characteristics.

[0008] Preferably, the outside of the steel ball is movably clamped and matched with the inner side of the rail groove through the protective pad.

[0009] Preferably, a number of groups of clamping members that are matched in pairs are installed on the inner side of the slide seat. Each two groups of clamping members are fixedly connected through a round shaft. A support rolling pad is rotatably connected to the outside of the round shaft. Support sliding grooves are opened on both sides of the guide rail.

[0010] Preferably, the inner side of the sliding seat is in limiting sliding butt joint with the support sliding grooves on both sides of the guide rail through the support rolling pads between the two sets of clamping pieces.

[0011] The utility model provides a precision ball curved guide rail, which has the following beneficial effects:

[0012] 1. For this precision ball curved guide rail, in this text, the sliding seat can roll and slide through the balls at the end of the support shaft in the rail groove inside the guide rail. When the sliding seat slides to the curved part of the guide rail, the contact pressure of the balls on the inner side of the guide rail will be relatively large. At this time, when the sliding seat slides, the sliding seat can slide and expand through the sleeve outside the support shaft, and one end of the support shaft located inside the sleeve can squeeze the spring through the limiting piece. At this time, the sliding seat can be supported and buffered by the spring to avoid excessive pressure on the balls themselves, and the protective pads coated on the outside of the balls can provide a certain degree of protection through their own characteristics to avoid direct friction of the balls, thereby achieving the effect of improving the service life of the balls.

[0013] 2. For this precision ball curved guide rail, a support rolling pad is rotatably connected between the two sets of clamping pieces on the inner side of the sliding seat, and the support rolling pad itself has a deformation characteristic. The inner side of the sliding seat is in limiting butt joint with the support sliding grooves on both sides of the guide rail through the support rolling pad. When the sliding seat slides, the sliding seat can be supported to a certain extent by the support rolling pad, reducing the force on the balls themselves, thereby achieving the effect of assisting in reducing the damage to the balls themselves. Description of the Drawings

[0014] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained based on the provided drawings.

[0015] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have technical essential significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 For the present utility model Figure 1 An enlarged view of A;

[0018] Figure 3 For the present utility model Figure 1 The enlarged view of B in it;

[0019] Figure 4 For the present utility model Figure 1 The enlarged view of C in it.

[0020] Legend description:

[0021] 1. Guide rail; 2. Slide seat; 3. Rail groove; 4. Connecting groove; 5. Ball; 6. Protection pad; 7. Mounting hole; 8. Support shaft; 9. Sleeve; 10. Limiting member; 11. Spring; 12. Clamping member; 13. Round shaft; 14. Support roller pad; 15. Support chute. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0023] Embodiment: A precision ball curved guide rail, as Figures 1-4 shown, includes a guide rail 1 and a slide seat 2. A rail groove 3 is provided inside the guide rail 1. Connecting grooves 4 communicating with the rail groove 3 are provided on both sides of the guide rail 1. A ball 5 is movably clamped inside the rail groove 3. A mounting hole 7 is provided inside the ball 5. A support shaft 8 is rotatably connected to the inner side of the mounting hole 7. A sleeve 9 is slidably sleeved outside the support shaft 8. One end of the sleeve 9 is fixedly connected and matched with the inner side of the slide seat 2. The end of the support shaft 8 is limited and clamped with the inside of the sleeve 9 through a limiting member 10. A spring 11 supporting and connecting with the limiting member 10 is arranged inside the sleeve 9. Several groups of mutually matched clamping members 12 are installed on the inner side of the slide seat 2. Every two groups of clamping members 12 are fixedly connected through a round shaft 13. A support roller pad 14 is rotatably connected to the outside of the round shaft 13. Support chutes 15 are provided on both sides of the guide rail 1.

[0024] Furthermore, when the inner side of the slide seat 2 slides through the ball 5 at the end of the support shaft 8 and the inner side of the rail groove 3, the inner side of the slide seat 2 is in a telescopic movement state with the outside of the support shaft 8 through the sleeve 9, and the spring 11 inside the sleeve 9 is in a supporting and buffering state for the limiting member 10 at the end of the support shaft 8.

[0025] Furthermore, a protection pad 6 is sleeved and wrapped outside the ball 5. The protection pad 6 has its own deformation characteristics, and the outside of the ball 5 is movably clamped and matched with the inner side of the rail groove 3 through the protection pad 6.

[0026] Furthermore, the inner side of the sliding seat 2 is in limit sliding butt joint and cooperation with the support sliding grooves 15 on both sides of the guide rail 1 through the support roller pad 14 between the two groups of clamping members 12.

[0027] The working principle of the present utility model:

[0028] The sliding seat 2 can roll and slide through the ball 5 at the end of the support shaft 8 in the rail groove 3 inside the guide rail 1. When the sliding seat 2 slides to the curved part of the guide rail 1, the pressure on the ball 5 on the inner side of the guide rail 1 will be relatively large. At this time, when the sliding seat 2 slides, the sliding seat 2 can slide and expand through the sleeve 9 outside the support shaft 8. One end of the support shaft 8 inside the sleeve 9 can squeeze the spring 11 through the limiting member 10. At this time, the sliding seat 2 can be supported and buffered by the spring 11 to avoid excessive pressure on the ball 5 itself. Moreover, the protective pad 6 coated on the outside of the ball 5 can provide a certain degree of protection through its own characteristics to avoid direct friction of the ball 5, thereby improving the service life of the ball 5. The inner side of the sliding seat 2 is rotatably connected with a support roller pad 14 between the two groups of clamping members 12. The support roller pad 14 itself has a deformation characteristic. The inner side of the sliding seat 2 is in limit butt joint with the support sliding grooves 15 on both sides of the guide rail 1 through the support roller pad 14. When the sliding seat 2 slides, the sliding seat 2 can be supported to a certain extent through the support roller pad 14, reducing the force on the ball 5 itself.

[0029] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A precision ball curved guide rail, comprising a guide rail (1) and a sliding seat (2), characterized in that: A rail groove (3) is formed inside the guide rail (1). Communication grooves (4) communicating with the rail groove (3) are formed on both sides of the guide rail (1). A ball (5) is movably clamped inside the rail groove (3). An installation hole (7) is formed inside the ball (5). A support shaft (8) is rotatably connected to the inner side of the installation hole (7). A sleeve (9) is slidably sleeved outside the support shaft (8). One end of the sleeve (9) is fixedly connected and matched with the inner side of the sliding seat (2). The end of the support shaft (8) is limited and clamped with the inside of the sleeve (9) through a limiting member (10). A spring (11) supporting and connecting with the limiting member (10) is arranged inside the sleeve (9).

2. A precision ball curved guide rail according to claim 1, characterized in that: When the inner side of the sliding seat (2) slides with the inner side of the rail groove (3) through the ball (5) at the end of the support shaft (8), the inner side of the sliding seat (2) is in a telescopic movement state with the outside of the support shaft (8) through the sleeve (9). The spring (11) inside the sleeve (9) is in a state of supporting and buffering the limiting member (10) at the end of the support shaft (8).

3. The precision ball curved rail according to claim 2, characterized in that: A protective pad (6) is sleeved and wrapped outside the ball (5), and the protective pad (6) has its own deformation characteristics.

4. The precision ball curved rail according to claim 3, characterized in that: The outside of the ball (5) is movably clamped and matched with the inner side of the rail groove (3) through the protective pad (6).

5. A precision ball curved guide rail according to claim 2, characterized in that: A number of groups of clamping members (12) that are matched in pairs are installed on the inner side of the sliding seat (2). Each two groups of the clamping members (12) are fixedly connected through a round shaft (13). A support roller pad (14) is rotatably connected to the outside of the round shaft (13). Support sliding grooves (15) are formed on both sides of the guide rail (1).

6. The precision ball curved guide rail according to claim 5, wherein: The inner side of the sliding seat (2) is in a limiting sliding butt joint and matching with the support sliding grooves (15) on both sides of the guide rail (1) through the support roller pad (14) between the two groups of clamping members (12).

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