Ball guide retainer and guide pillar guide sleeve

Abstract

The utility model discloses a ball guide retainer and a guide pillar guide sleeve, and belongs to the technical field of guide pillar guide sleeves. The ball guide retainer comprises a retainer body, the retainer body is in an annular shape, a plurality of elastic damping parts and a plurality of bearing parts are arranged in the annular direction of the retainer body, the bearing parts are arranged between every two adjacent elastic damping parts, the elastic damping parts are evenly distributed, the retainer body further comprises connecting parts, pocket holes are formed in the bearing parts to contain balls, and the bearing parts are connected with the connecting parts. The diameter of the ball is a; the elastic damping part is a circular split ring and is of a hollow structure in the axial direction, the diameter of the elastic damping part is b, and b is larger than a. And the stability of the guide pillar and the guide sleeve is improved.

Description

Technical Field

[0001] This utility model relates to the field of guide post and guide sleeve technology, and in particular to a ball guide retainer and a guide post and guide sleeve. Background Technology

[0002] Guide pillars and guide bushings are commonly used guiding components in molds and mechanical equipment, mainly used to ensure the precise guidance and positioning of moving parts.

[0003] Typically, guide pillars and guide bushings are installed on opposite sides of the mold to ensure that the mold on both sides moves along a predetermined path. To improve the stability between the guide pillars and guide bushings, a retainer can be installed between them to fill the gap between the guide pillars and guide bushings. Therefore, a ball bearing guide retainer is proposed to improve the stability of the guide pillars and guide bushings. Utility Model Content

[0004] The main purpose of this invention is to provide a ball bearing guide cage and guide post / sleeve, which aims to improve the stability of the guide post / sleeve.

[0005] To achieve the above objectives, the ball guide cage proposed in this utility model includes:

[0006] The frame is ring-shaped, with multiple elastic damping sections and multiple load-bearing sections arranged along its circumference. A load-bearing section is positioned between two adjacent elastic damping sections. The multiple elastic damping sections are evenly distributed. The frame also includes connecting sections.

[0007] The bearing portion has a pocket to accommodate a ball, the diameter of which is a;

[0008] The elastic damping part is a circular open ring with a hollow structure along its axial direction. The diameter of the elastic damping part is b, where b > a.

[0009] Optionally, in one embodiment of the present invention, the frame further includes a connecting portion, and two adjacent bearing portions or the elastic damping portion are connected to the bearing portion through the connecting portion, and the connecting portion has an arc-shaped groove to form the pocket.

[0010] Optionally, in one embodiment of the present invention, the junction between the connecting portion and the bearing portion and the junction between the connecting portion and the elastic damping portion are smooth rounded corners.

[0011] Optionally, in one embodiment of the present invention, three elastic damping parts are provided along the circumferential direction of the frame, the line connecting the three elastic damping parts forms an equilateral triangle, and two bearing parts are evenly arranged between two adjacent elastic damping parts.

[0012] Optionally, in one embodiment of the present invention, the pockets of adjacent bearing portions are offset in the axial direction.

[0013] Optionally, in one embodiment of this utility model, the retainer is an integral structure.

[0014] This utility model also proposes a guide post and guide sleeve, comprising:

[0015] Guide pillars;

[0016] A guide sleeve, which is fitted around the outer periphery of the guide post;

[0017] A retainer, which is the retainer described above, is located between the guide post and the guide sleeve.

[0018] Optionally, in one embodiment of the present invention, both the guide post and the guide sleeve are provided with sliding grooves, the elastic damping part and the bearing part are both located in the sliding grooves, and the elastic damping part is interference-fitted with the sliding grooves.

[0019] Optionally, in one embodiment of the present invention, the corners of the groove are rounded.

[0020] Optionally, in one embodiment of the present invention, the retainer is connected to the guide post via an elastic element to limit the movement distance of the retainer.

[0021] Compared with existing technologies, this invention achieves at least the following beneficial effects. The cage proposed in this solution is installed between the guide post and guide sleeve. The cage body has an elastic damping part and a load-bearing part. The elastic damping part is a circular open ring with a diameter larger than that of the rolling element. This means that during assembly, the elastic damping part has an interference fit with the guide post and guide sleeve. During the assembly of the cage to the guide post and guide sleeve, because the elastic damping part is an open ring, it can be compressed first to facilitate assembly. After assembly, under elastic action, the elastic damping part recovers its shape, forming an interference fit with the guide post and guide sleeve, with its two ends abutting against the guide sleeve. By filling the gap between the guide post and guide sleeve, the motion stability between the guide post and guide sleeve is improved, preventing displacement during movement. Furthermore, because the ends of the elastic damping part abut against the guide sleeve, the contact area between them is small, only slightly increasing the friction between the cage and the guide sleeve. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the ball guide cage of this utility model;

[0024] Figure 2 This is a front view of the ball guide cage of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the guide post and guide sleeve of this utility model;

[0026] Figure 4 This is a front view of the guide post and guide sleeve of this utility model.

[0027] Explanation of icon numbers:

[0028] 100, frame; 200, elastic damping part; 300, load-bearing part; 310, pocket; 400, connecting part; 410, arc groove; 500, guide post; 600, guide sleeve; 700, slide groove;

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] Reference Figures 1-4 This utility model proposes a ball guide cage, comprising:

[0035] The frame 100 is annular, with multiple elastic damping parts 200 and multiple load-bearing parts 300 arranged along its circumference. A load-bearing part 300 is arranged between two adjacent elastic damping parts 200. The multiple elastic damping parts 200 are evenly distributed. The frame 100 also includes connecting parts 400.

[0036] The bearing part 300 has a pocket 310 to accommodate a ball, the diameter of which is a;

[0037] The elastic damping part 200 is a circular open ring with a hollow structure along its axial direction. The diameter of the elastic damping part 200 is b, where b > a.

[0038] The cage proposed in this solution is installed between the guide post and the guide sleeve. The cage body 100 has an elastic damping part 200 and a bearing part 300. The elastic damping part 200 has a circular open ring structure, the diameter of which is larger than the diameter of the rolling element. That is, when the assembly is completed, the elastic damping part 200 has an interference fit with the guide post 500 and the guide sleeve 600. During the assembly of the cage to the guide post and the guide sleeve, since the elastic damping part 200 is an open ring, it can be compressed first to facilitate assembly. After assembly, under the action of elasticity, the elastic damping part 200 restores its shape, forming an interference fit with the guide post and the guide sleeve, and its two ends abut against the guide sleeve 600. By filling the gap between the guide post and the guide sleeve, the motion stability between the guide post and the guide sleeve is improved, and the guide post and the guide sleeve are prevented from shifting during movement. In addition, since the elastic damping part 200 only abuts against the guide sleeve 600 at its end, the contact area between the two is small, which only increases the friction between the cage and the guide sleeve 600 to a small extent.

[0039] In addition, the elastic damping part 200 is an axially hollow structure. When lubricating the guide post and guide sleeve structure, lubricating oil can be directly injected into the other end of the guide post and guide sleeve through the hollow structure to ensure sufficient lubrication.

[0040] The bearing section 300 has a pocket 310 to accommodate the rolling element, which is a ball. The ball guide post and bushing have extremely high motion accuracy and repeatability.

[0041] The frame 100 also includes a connecting part 400 structure, which connects adjacent bearing parts 300 or between bearing parts 300 and elastic damping parts 200. Preferably, in order to match the groove 700 opened in the guide post and guide sleeve, when viewed in the axial direction, the connecting part 400 has a plate-like structure for connecting, the elastic damping part 200 has a cylindrical structure for filling, and the bearing part 300 is composed of multiple columnar spacers in the axial direction. The arc-shaped groove 410 of the connecting part 400 between two adjacent spacers forms a pocket 310 for accommodating balls.

[0042] In a preferred embodiment, the cage is provided with three elastic damping portions 200 and six support portions 300. The three elastic damping portions 200 are evenly distributed circumferentially along the cage body 100, and the line connecting the three elastic damping portions 200 forms an equilateral triangle. Two support portions 300 are provided between two adjacent elastic damping portions 200, and the support portions 300 between adjacent elastic damping portions 200 are also evenly distributed.

[0043] Furthermore, in the axial direction, the pockets 310 between adjacent load-bearing parts 300 are staggered. This staggered design between adjacent rows of pockets 310 significantly improves the overall structural strength and stiffness. This staggered arrangement makes the load distribution within the structure more uniform, avoiding localized stress concentration, thereby optimizing stress distribution and reducing the risk of fatigue failure due to stress concentration. Simultaneously, the staggered design enhances the structure's resistance to deformation, making it more stable under external loads, reducing vibration and noise generation, and further improving operational stability. Therefore, by staggering multiple rows of pockets 310, not only is the structural strength and stiffness improved, but stress distribution is also optimized, and overall stability is enhanced, resulting in better performance and service life under complex working conditions.

[0044] Furthermore, the cage is integrally molded and made of a polyamide 12 composite material with 15% glass fiber added. This material has good elasticity and self-lubricating properties, which can meet the conditions for the elastic damping part 200 to recover its deformation after assembly and for the lubrication of the guide post and guide sleeve.

[0045] During the movement of the guide post and guide sleeve, the cage will repeatedly rub against the guide post and guide sleeve. The one-piece molded cage is not prone to local deformation during repeated friction movement, and the overall structure has good rigidity, which can better withstand loads and vibrations.

[0046] Similarly, to improve the durability of the cage and reduce stress concentration, the joints between the connecting part 400 and the load-bearing part 300, and between the connecting part 400 and the elastic damping part 200, are all rounded. The rounded corner structure can reduce stress fluctuations at the joints and reduce the risk of fatigue cracks.

[0047] To achieve the above objectives, this solution also proposes a guide post and guide sleeve, which includes a guide post 500, a guide sleeve 600, and a retainer. The specific structure of the retainer is as described above. Therefore, this guide post and guide sleeve has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0048] The guide pillars and guide sleeves are all equipped with grooves 700 for ball movement. The uniform distribution and rolling contact of the balls within the grooves 700 effectively reduce wear and extend service life. Furthermore, the precise guiding effect of the grooves 700 ensures the stability of the ball movement, thereby improving the overall guiding accuracy of the guide pillars and guide sleeves. Finally, this design also enhances the system's load-bearing capacity, enabling the guide pillars and guide sleeves to maintain stable operation under high load conditions. Therefore, the inclusion of grooves 700 for ball movement not only improves performance but also enhances reliability and durability.

[0049] Similarly, during the movement, the guide post 500 also bears a large stress. Designing the corners of the slide groove 700 as rounded corners can reduce the stress concentration of the guide post 500 and improve its durability.

[0050] Because the cage may slip during the movement of the guide post and guide sleeve, causing it to partially detach from the guide post 500 and thus affecting the operation of the guide post and guide sleeve, an elastic element (not shown in the figure) is designed to connect one end of the cage to the guide post 500. This restricts the movement path of the cage and prevents it from detaching from the guide post 500. Specifically, the elastic element can be a spring.

[0051] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A ball guide cage, characterized in that The application relates to a bearing cage. The bearing cage comprises a frame body, a plurality of elastic damping parts and a plurality of bearing parts. The bearing part is provided with a pocket hole for accommodating a ball. The elastic damping part is a circular opening ring and has a hollow structure along the axial direction.

2. The ball guide cage according to claim 1, characterized in that The diameter of the elastic damping part is b, and b>a.

3. The ball guide cage according to claim 2, characterized in that The frame body further comprises a connecting part.

4. The ball guide cage according to claim 1, characterized in that The connecting part is connected between two adjacent bearing parts or between the bearing part and the elastic damping part.

5. The ball guide cage according to claim 1, wherein The connecting part is provided with an arc-shaped slot to form the pocket hole.

6. The ball guide cage according to claim 1, characterized in that The connecting part is smoothly connected with the bearing part and the elastic damping part.

7. A guide post and sleeve, characterised in that, Along the circumferential direction of the frame body, three elastic damping parts are arranged, and the connecting lines of the three elastic damping parts form an equilateral triangle. Two bearing parts are evenly arranged between two adjacent elastic damping parts. The pocket holes of two adjacent bearing parts are axially staggered. The bearing cage is an integral structure.

8. The guide post and sleeve of claim 7 wherein, The application further relates to a bearing.

9. The guide post and sleeve of claim 8 wherein, The bearing comprises a guide column, a guide sleeve and a bearing cage.

10. The guide post and bushing of claim 7 wherein, The guide sleeve is sleeved on the outer periphery of the guide column. The bearing cage is arranged between the guide column and the guide sleeve. The guide column and the guide sleeve are provided with sliding grooves. The elastic damping part and the bearing part are arranged in the sliding grooves. The elastic damping part is in interference fit with the sliding groove. The sliding groove is provided with a rounded corner. The bearing cage is connected with the guide column through an elastic member to limit the movement distance of the bearing cage.

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