Low-cost long-stroke linear sliding rail

Abstract

The utility model relates to the technical field of high-precision sliding rails, in particular to a low-cost long-stroke linear sliding rail which comprises a guide rail shell, a sliding block and a combined type high-precision guide rail, the combined type high-precision guide rail is horizontally installed on the inner side wall of the guide rail shell in an embedded mode, and the sliding block is arranged inside the guide rail shell in an embedded mode. Through the design of the internal combined type high-precision guide rail, the sliding block is subjected to limiting sliding in three stages, when the sliding block runs to a rough limiting guide rail area, the precision of the sliding contact part of the sliding block is low, and due to the existence of a ball A and a spring, the elastic deviation rectifying effect can be achieved, so that the wear rate can be greatly reduced, and the service life is prolonged. When the sliding block moves to a precise limiting guide rail area, the thickness of the guide rail support B is consistent, the guide rail support B is matched with an external ball B to slide, stable operation of the sliding block is kept, when the sliding block moves to the rear half section of the area, the guide block A is matched with the guide groove, and precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-precision slide rails, in particular to a low-cost and long-stroke linear slide rail. Background Art

[0002] A slide is an important component of a mechanical device or tool, used to support and guide objects to move or slide smoothly. It is usually made of metal with a smooth surface and precise manufacturing process to ensure high-precision motion control.

[0003] Slide rails are widely used in industrial automation, robotics, semiconductor manufacturing and other fields, but there are still some problems: for use scenarios with long stroke requirements and high processing position accuracy requirements, if long-stroke high-precision slide rails are used, there will be problems such as high cost, difficulty in maintaining stability and accuracy, high installation difficulty, and high subsequent maintenance costs. If ordinary slide rails are used, they cannot meet the accuracy requirements of the processing position. Therefore, in view of the above situation, there is an urgent need to develop a low-cost, long-stroke linear slide rail to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of the utility model is to provide a low-cost long-stroke linear slide rail to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a low-cost long-stroke linear slide rail, comprising a guide rail housing, a slider and a combined high-precision guide rail, wherein the combined high-precision guide rail is horizontally embedded in the inner side wall of the guide rail housing, and the slider is embedded in the guide rail housing and is slidably connected to the combined high-precision guide rail;

[0006] Two groups of arc-shaped grooves are arranged on the side of the slider and three groups of guide grooves are arranged inside the grooves and are parallel to each other and equidistant from each other.

[0007] The combined high-precision guide rail is composed of a coarse limit guide rail, a fine limit guide rail, and a precise positioning guide rail, which are spliced ​​end to end in sequence. The coarse limit guide rail includes a guide rail bracket A, a ball A and a spring. The guide rail bracket A is horizontally embedded and installed on the inner wall of the guide rail housing. The interior of the guide rail bracket A is provided with a number of equidistant assembly grooves. The spring and the ball A are embedded and installed in the interior of the assembly groove in sequence. The precise limit guide rail includes a guide rail bracket B, a ball B and a guide block A. The guide rail bracket B is horizontally embedded and installed on the inner wall of the guide rail housing. One side of the guide rail bracket B is provided with a number of equidistant assembly grooves. The ball B is embedded and installed in the interior of the assembly groove. The guide block A is horizontally arranged on one side of the guide rail bracket B and is integrally formed with the guide rail bracket B. The precise positioning guide rail includes a guide rail bracket C and a guide block B. The guide rail bracket C is horizontally embedded and installed on the inner wall of the guide rail housing. The guide block B is horizontally arranged on one side of the guide rail bracket C and is integrally formed with the guide rail bracket C.

[0008] Preferably, a plurality of equally spaced liquid supply interfaces are installed on the side of the guide rail housing, a plurality of equally spaced lubrication holes are opened on the inner wall of the guide rail housing, an inner flow channel is opened inside the guide rail housing, and the two ends of the inner flow channel are respectively connected with the liquid supply interface and the lubrication holes, a horizontally arranged collecting groove is opened in the middle position of the inner bottom of the guide rail housing, a prismatic guide groove is opened on the side of the collecting groove, a reflux interface is installed at the bottom of the guide rail housing, the reflux interface is connected with and fixed to the inside of the collecting groove, and the lubrication holes are arranged on the inner wall, so that the lubricant pumped in from the outside can naturally flow down along the inner wall of the guide rail housing, so that the lubricant can evenly flow through the inner wall of the guide rail housing and the surface of the combined high-precision guide rail.

[0009] Preferably, the edges of the groove and the guide groove are designed with rounded corners, which can reduce wear when the slider enters the guide block A area and make the operation smoother.

[0010] Preferably, the thickness of the guide rail bracket A gradually decreases from one end adjacent to the precise limit guide rail to the other end, and the edges of the protruding ends of several balls A are in the same straight line position. When the slider runs to the narrower end of the guide rail bracket A, its accuracy is the lowest. In addition, the mutual cooperation between the balls A and the spring and the reduction of the path can achieve continuous elastic correction and improvement of accuracy, and the wear rate can be greatly reduced in the process.

[0011] Preferably, the thickness of the guide rail bracket B is uniform, the outermost edges of the protruding ends of the ball B are in the same straight line position, the length of the guide block A is half of the guide rail bracket B, and the guide block A is installed on the outer wall of the guide rail bracket B near one end of the precise positioning guide rail, the guide block A is adapted to the guide groove, and the end of the guide block A near the coarse limit guide rail adopts a chamfered corner design, and the slider is maintained in a stable operating state through one end of the guide rail bracket B, and then it is transitioned to the guide block A, and the cooperation between the guide block A and the guide groove further improves the operating accuracy and stability of the slider.

[0012] Preferably, the thickness of the guide rail bracket C gradually increases from one end adjacent to the precise limit guide rail toward the other end. The thickness of the guide rail bracket C 100 mm away from the other end is consistent and fits tightly with the groove of the slider. The guide block B is adapted to the guide groove and changes in thickness until it fits tightly with the groove. Its accuracy can be gradually improved in the process, so that the accuracy is maximized after it is in place. At the same time, the small-volume guide block B cooperates with the guide groove to improve matching accuracy and stability.

[0013] Preferably, two parallel sealed slide rails are installed on the top edge of the guide rail housing, end seals are installed at both ends of the guide rail housing, and a dust cover is embedded between the sealed slide rail and the slider. The dust cover can keep the guide rail housing in a fully closed state at all times during the operation of the slider, preventing external dust and impurities from entering the interior of the guide rail housing.

[0014] Compared with the prior art, the utility model provides a low-cost long-stroke linear slide rail, which has the following beneficial effects:

[0015] 1. Through the design of internal combined high-precision guide rails, the slider is limited to slide in three stages. When the slider moves to the rough limit guide rail area, the sliding contact part of the slider has low precision. Due to the presence of ball A and spring, the elastic correction effect can be achieved, so its wear rate can be greatly reduced. This is suitable for long-stroke transportation.

[0016] 2. When the slider moves to the precise limit rail area, the thickness of the guide rail bracket B is consistent, and it slides with the external ball B to keep the slider running stably. When it moves to the second half of this area, the guide block A is matched with the guide groove, and the accuracy is improved;

[0017] 3. When the slider moves to the precise positioning guide rail area, the thickness of the guide rail bracket C gradually increases until it fits into the groove of the slider. At this time, the ball rolling friction is transformed into direct sliding friction, and the accuracy here is greatly improved, meeting the high-precision requirements of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0020] Figure 2It is a schematic diagram of the side structure of the utility model;

[0021] Figure 3 This is the position relationship diagram of the combined high-precision guide rail of the utility model;

[0022] Figure 4 This is a side longitudinal section view of the guide rail housing of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the prismatic guide groove of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the coarse limit guide rail of the utility model;

[0025] Figure 7 It is a partial top view cross-sectional view of the coarse limit guide rail of the utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the precision limit guide rail of the utility model;

[0027] Fig. 9 This is a schematic diagram of the precise positioning guide structure of the utility model;

[0028] Fig.10 This is a schematic diagram of the structure of the slider of the utility model.

[0029] In the figure: 1. Guide rail housing; 11. Liquid supply interface; 12. Lubrication hole; 13. Inner flow channel; 14. Prismatic guide groove; 15. Collecting groove; 16. Return interface; 2. Slider; 21. Groove; 22. Guide groove; 3. Dust cover; 4. End seal; 5. Sealed slide rail; 6. Combined high-precision guide rail; 61. Coarse limit guide rail; 611. Guide rail bracket A; 612. Ball A; 613. Spring; 62. Precision limit guide rail; 621. Guide rail bracket B; 622. Ball B; 623. Guide block A; 63. Precision positioning guide rail; 631. Guide rail bracket C; 632. Guide block B. DETAILED DESCRIPTION

[0030] 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.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment 1:

[0033] See also Figure 1-Figure 10 The utility model provides a technical solution: a low-cost long-stroke linear slide rail, comprising a guide rail housing 1, a slider 2 and a combined high-precision guide rail 6, wherein the combined high-precision guide rail 6 is horizontally embedded in the inner side wall of the guide rail housing 1, and the slider 2 is embedded in the guide rail housing 1 and is slidably connected with the combined high-precision guide rail 6;

[0034] The side of the slider 2 is provided with two groups of arc-shaped grooves 21 which are distributed opposite to each other, and the inside of the grooves 21 is provided with three groups of guide grooves 22 which are parallel to each other and equidistant from each other;

[0035] The combined high-precision guide rail 6 is composed of a coarse limit guide rail 61, a precise limit guide rail 62, and a precise positioning guide rail 63, which are sequentially spliced ​​end to end. The coarse limit guide rail 61 includes a guide rail bracket A611, a ball A612, and a spring 613. The guide rail bracket A611 is horizontally embedded in the inner wall of the guide rail housing 1. The guide rail bracket A611 is provided with a plurality of equidistantly distributed assembly grooves. The spring 613 and the ball A612 are sequentially embedded in the assembly grooves. The precise limit guide rail 62 includes a guide rail bracket B621, a ball B622, and a guide block A623. The guide rail bracket B621 It is horizontally embedded and installed on the inner wall of the guide rail housing 1, and a plurality of equidistantly distributed assembly grooves are opened on one side of the guide rail bracket B621, and the ball B622 is embedded and installed in the inner part of the assembly groove. The guide block A623 is horizontally arranged on one side of the guide rail bracket B621 and is integrally formed with the guide rail bracket B621. The precise positioning guide rail 63 includes a guide rail bracket C631 and a guide block B632. The guide rail bracket C631 is horizontally embedded and installed on the inner wall of the guide rail housing 1, and the guide block B632 is horizontally arranged on one side of the guide rail bracket C631 and is integrally formed with the guide rail bracket C631.

[0036] Preferably, a plurality of equally spaced liquid supply interfaces 11 are installed on the side of the guide rail housing 1, a plurality of equally spaced lubrication holes 12 are provided on the inner wall of the guide rail housing 1, an inner flow channel 13 is provided inside the guide rail housing 1, and both ends of the inner flow channel 13 are respectively connected with the liquid supply interface 11 and the lubrication holes 12, a horizontally arranged collecting groove 15 is provided in the middle position of the inner bottom of the guide rail housing 1, a prismatic guide groove 14 is provided on the side of the collecting groove 15, a reflux interface 16 is installed at the bottom of the guide rail housing 1, and the reflux interface 16 is connected and fixed to the inside of the collecting groove 15, and the lubrication holes 12 are provided on the inner wall, so that the lubricant pumped in from the outside can flow down naturally along the inner wall of the guide rail housing 1, so that the lubricant can evenly flow through the inner wall of the guide rail housing 1 and the surface of the combined high-precision guide rail 6.

[0037] Preferably, the edges of the groove 21 and the guide groove 22 are both chamfered, which can reduce wear when the slider 2 enters the guide block A623 area and make the operation smoother.

[0038] Preferably, the thickness of the guide rail bracket A611 gradually decreases from one end adjacent to the precise limit guide rail 62 to the other end, and the outermost edges of the protruding ends of several balls A612 are in the same straight line position. When the slider 2 runs to the narrower end of the guide rail bracket A611, its accuracy is the lowest. In addition, the mutual cooperation between the balls A612 and the spring 613 and the reduced path can achieve continuous elastic correction and improved accuracy, and the wear rate can be greatly reduced in the process.

[0039] Preferably, the thickness of the guide rail bracket B621 is uniform, the outermost edges of the protruding ends of the ball bearings B622 are in the same straight line position, the length of the guide block A623 is half of the guide rail bracket B621, and the guide block A623 is installed on the outer wall of the guide rail bracket B621 near one end of the precise positioning guide rail 63, the guide block A623 is adapted to the guide groove 22, and the end of the guide block A623 near the coarse limiting guide rail 61 adopts a chamfered corner design, and the slider 2 is maintained in a stable operating state through one end of the guide rail bracket B621, and then it is transitioned to the guide block A623, and the cooperation between the guide block A623 and the guide groove 22 further improves the operating accuracy and stability of the slider 2.

[0040] Preferably, the thickness of the guide rail bracket C631 gradually increases from one end adjacent to the precise limit guide rail 62 toward the other end. The thickness of the guide rail bracket C631 100 mm away from the other end is consistent and fits tightly with the groove 21 of the slider 2. The guide block B632 is adapted to the guide groove 22 and changes in thickness until it fits tightly with the groove 21. Its accuracy can be gradually improved in the process, so that the accuracy can be maximized after it is in place. At the same time, the small-volume guide block B632 cooperates with the guide groove 22 to improve the matching accuracy and stability.

[0041] Preferably, two parallel sealing slide rails 5 are installed on the top edge of the guide rail housing 1, end seals 4 are installed at both ends of the guide rail housing 1, and a dust cover 3 is embedded between the sealing slide rail 5 and the slider 2. The dust cover 3 can keep the guide rail housing 1 in a fully closed state during the operation of the slider 2, thereby preventing external dust and impurities from entering the guide rail housing 1.

[0042] Working principle: The workpiece to be transported is mounted on the surface of the slider 2, and an external power is used to drive the slider 2 to slide from the coarse limit guide rail 61 to the precise positioning guide rail 63. When the slider 2 is located in the coarse limit guide rail 61 area of ​​the combined high-precision guide rail 6, the spring 613 presses the ball A612 tightly against the inner wall of the groove 21 of the slider 2, and the two sides are aligned to provide support for the slider 2. Moreover, since the spring 613 has a correction effect, the slider 2 can slide smoothly. When the slider 2 runs to the precise limit guide rail 62 area, the guide rail bracket B621 can maintain the stable operation of the slider 2. When the slider 2 runs to the second half of this area, the guide groove 22 is matched with the guide block A623, thereby improving the operation accuracy of the slider 2. When the slider 2 runs to the precise positioning guide rail 63 area, the groove 21 of the slider 2 gradually fits closely against the guide rail bracket C631. When it is finally in place, the groove 21 is tightly against the guide rail bracket C631, and the guide block B632 is matched with the guide groove 22, thereby achieving a high-precision effect.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A low-cost long-stroke linear guide rail, characterized in that: The invention comprises a guide rail housing (1), a slider (2) and a combined high-precision guide rail (6), wherein the combined high-precision guide rail (6) is horizontally embedded in the inner side wall of the guide rail housing (1), and the slider (2) is embedded in the interior of the guide rail housing (1) and is slidably connected to the combined high-precision guide rail (6); The side surface of the slider (2) is provided with two groups of arc-shaped grooves (21) that are distributed opposite to each other, and the interior of the groove (21) is provided with three groups of guide grooves (22) that are parallel to each other and equidistant from each other; The combined high-precision guide rail (6) is formed by sequentially splicing a rough limit guide rail (61), a precise limit guide rail (62), and a precise positioning guide rail (63). The rough limit guide rail (61) comprises a guide rail bracket A (611), a ball bearing A (612), and a spring (613). The guide rail bracket A (611) is horizontally embedded in the inner side wall of the guide rail housing (1). The guide rail bracket A (611) is provided with a plurality of equidistantly distributed assembly grooves. The spring (613) and the ball bearing A (612) are sequentially embedded in the assembly grooves. The precise limit guide rail (62) comprises a guide rail bracket B (621), a ball bearing B (622), and a guide block A (623). The guide rail bracket B (6 21) is horizontally embedded and installed on the inner side wall of the guide rail housing (1), one side of the guide rail bracket B (621) is provided with a plurality of equidistantly distributed assembly grooves, the ball B (622) is embedded and installed in the inner side of the assembly groove, the guide block A (623) is horizontally arranged on one side of the guide rail bracket B (621) and is integrally formed with the guide rail bracket B (621), the precise positioning guide rail (63) comprises a guide rail bracket C (631) and a guide block B (632), the guide rail bracket C (631) is horizontally embedded and installed on the inner side wall of the guide rail housing (1), the guide block B (632) is horizontally arranged on one side of the guide rail bracket C (631) and is integrally formed with the guide rail bracket C (631).

2. A low-cost long-stroke linear guide rail according to claim 1, characterized in that: The side of the guide rail housing (1) is provided with a plurality of equally spaced liquid supply interfaces (11), the inner side wall of the guide rail housing (1) is provided with a plurality of equally spaced lubrication holes (12), the interior of the guide rail housing (1) is provided with an inner flow channel (13), the two ends of the inner flow channel (13) are respectively connected to the liquid supply interface (11) and the lubrication holes (12), a horizontally arranged collecting groove (15) is provided at the middle position of the inner bottom of the guide rail housing (1), the side of the collecting groove (15) is provided with a prismatic guide groove (14), the bottom of the guide rail housing (1) is provided with a reflux interface (16), the reflux interface (16) is connected to and fixed to the interior of the collecting groove (15).

3. The low-cost long-stroke linear guide rail according to claim 1, characterized in that: The edges of the groove (21) and the guide groove (22) are both designed with rounded corners.

4. The low-cost long-stroke linear guide rail according to claim 1, characterized in that: The thickness of the guide rail bracket A (611) gradually decreases from one end adjacent to the precise limit guide rail (62) to the other end, and the outer edges of the protruding ends of the plurality of balls A (612) are located in the same straight line.

5. The low-cost long-stroke linear guide rail according to claim 1, characterized in that: The guide rail bracket B (621) has a uniform thickness, the outermost edges of the protruding ends of the ball bearings B (622) are located in the same straight line position, the guide block A (623) is half the length of the guide rail bracket B (621), and the guide block A (623) is installed on the outer wall of the guide rail bracket B (621) adjacent to the end of the precise positioning guide rail (63), the guide block A (623) is adapted to the guide groove (22), and the end of the guide block A (623) adjacent to the rough limiting guide rail (61) adopts a rounded corner design.

6. The low-cost long-stroke linear guide rail according to claim 1, characterized in that: The thickness of the guide rail bracket C (631) gradually increases from one end adjacent to the precise limit guide rail (62) toward the other end, and the thickness of the guide rail bracket C (631) 100 mm away from the other end is consistent and fits tightly with the groove (21) of the slider (2), and the guide block B (632) is adapted to the guide groove (22).

7. The low-cost long-stroke linear guide rail according to claim 1, characterized in that: Two mutually parallel sealing rails (5) are installed on the top edge of the guide rail housing (1), end seals (4) are installed at both ends of the guide rail housing (1), and a dust cover (3) is embedded and installed between the sealing rail (5) and the slider (2).

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