Linear guide rail with internal circulation crossed rollers

Abstract

The utility model discloses a linear guide rail with internal circulation crossed rollers, which relates to the technical field of linear guide rails and comprises a guide rail body, sliding grooves are arranged on two sides of the guide rail body, a sliding block is mounted on the guide rail body in a sliding fit manner, rolling grooves are arranged on two sides of the inner wall of the sliding block, the rolling grooves correspond to the sliding grooves, and mounting grooves are arranged in the sliding block. A moving groove is formed in a moving pipe installed in a matched mode, connecting grooves are formed in check blocks which are symmetrical to each other at the two ends of the moving pipe, transition blocks are installed in the connecting grooves, second U-shaped grooves are formed in the surfaces of the transition blocks, first U-shaped grooves are formed in the inner walls of the check blocks, and the two ends of the second U-shaped grooves are connected with the moving groove and rolling grooves in the inner walls of sliding blocks correspondingly. According to the internal circulation cross roller sliding block, the check block is matched with the internal structure of the moving pipe, and the check block, the moving groove and the rolling groove form a running channel of an internal circulation cross roller, so that the internal space of the sliding block is effectively utilized, and the occupation of external space is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear guide rail technical field, concretely is a linear guide rail with internal circulation cross roller. BACKGROUND

[0002] Cross roller guide is the product that is composed of two guide rails with V-shaped raceway, roller retainer cylindrical roller etc., the cylindrical roller that crosses each other is reciprocated on the V-shaped raceway surface that is precisely ground, can bear the load in each direction, realizes high-precision, stable linear motion.

[0003] The common cross roller of prior art is single direction motion queue, and the cross roller guide of single direction motion queue is limited due to the arrangement and movement mode of roller, in order to ensure that the roller has enough movement space and carrying capacity, the size of guide rail and slide needs to be designed larger. This is limited in some application scenarios that are strict in equipment space requirement, such as small precision instruments or compact automation equipment, and cannot meet the demand of equipment miniaturization. UTILITY MODEL CONTENTS

[0004] In view of the deficiency of prior art, the utility model provides a linear guide rail with internal circulation cross roller, solves the problem that the cross roller guide of single direction motion queue needs larger movement space in the background art, is limited in small precision instruments or compact automation equipment, and cannot meet the demand of equipment miniaturization.

[0005] To achieve the above object, the utility model is realized through the following technical scheme: a linear guide rail with internal circulation cross roller, including guide rail body, the both sides of guide rail body are equipped with sliding slot, the sliding block is slidably fitted and installed on the guide rail body, the inner wall of sliding block is equipped with rolling groove on both sides, the rolling groove corresponds with sliding slot, the installation groove is equipped in sliding block, the mobile pipe is fitted and installed in installation groove, the mobile groove is equipped in the inside of mobile pipe, the symmetric stopper is connected at both ends of mobile pipe, the connecting groove is arranged in the inside of stopper, the transition block is installed in connecting groove, the U-shaped groove one is equipped on the inner wall of stopper, the U-shaped groove two is equipped on the outer surface of transition block, the U-shaped groove two is connected with mobile groove at one end, the other end of U-shaped groove two is connected with the inner wall rolling groove of sliding block, the U-shaped groove one corresponds with U-shaped groove two.

[0006] Preferably, the sliding slot and the rolling groove are both straight grooves with triangular cross sections, and the sliding slot and the rolling groove are combined into a straight groove with a rhombic cross section.

[0007] Preferably, the U-shaped groove one and the U-shaped groove two are both triangular in cross section, and the U-shaped groove one and the U-shaped groove two are combined into a U-shaped tube groove with a rhombic cross section.

[0008] Preferably, the moving groove is in the shape of a rhombus, and both ends of the rhombus are connected to the straight groove through U-shaped tube grooves, forming a ring-shaped roller groove.

[0009] Preferably, the moving groove, the U-shaped tube groove and the straight groove are combined to form a ring-shaped roller groove, and a rolling body is arranged inside the ring-shaped roller groove.

[0010] The utility model provides a linear guide rail with internal circulation cross roller.

[0011] (1), the utility model discloses an internal circulation cross roller operation channel is constituted to the inside structure of stop block and moving pipe and moving groove and rolling groove through the cooperation of each other, and the space inside the sliding block is effectively utilized, and the occupation of external space is reduced.

[0012] (2), the utility model discloses internal circulation, can make each part's rolling body all participate in the process of bearing and rolling and because the rolling body is the circulation movement, each area rolling body has the opportunity to contact guide rail body and bear the load in the movement process, like this, the situation of partial excessive wear of the rolling body is avoided.

[0013] Thus, the problem that the cross roller guide rail needs a large movement space for one-way movement queuing, which is limited in small precision instruments or compact automated equipment and cannot meet the demand of device miniaturization is solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure display drawing of the utility model;

[0015] Figure 2 It is the overall structure display drawing of the utility model; Figure 1 It is the structure display drawing of the sliding block in the utility model;

[0016] Figure 3 It is the structure display drawing of the sliding block in the utility model; Figure 1 It is the structure display drawing of the stop block in the utility model;

[0017] Figure 4 It is the structure display drawing of the sliding block in the utility model; Figure 1 It is the sectional view of the sliding block in the utility model.

[0018] In the drawing, 1, guide rail body; 11, sliding groove; 2, sliding block; 21, rolling groove; 22, mounting groove; 3, stop block; 31, U-shaped groove one; 32, connecting groove; 4, moving pipe; 41, moving groove; 5, transition block; 51, U-shaped groove two; 6, rolling body. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Embodiment:

[0021] Please refer to Figures 1-4 A linear guide rail with internal circulation cross rollers, comprising a guide rail body 1, a sliding groove 11 is formed on both sides of the guide rail body 1, a sliding block 2 is slidably and adaptively installed on the guide rail body 1, a rolling groove 21 is formed on both sides of the inner wall of the sliding block 2, the rolling groove 21 corresponds to the sliding groove 11, an installation groove 22 is formed in the sliding block 2, a moving pipe 4 is adaptively installed in the installation groove 22, a moving groove 41 is formed in the inside of the moving pipe 4, mutually symmetrical stop blocks 3 are connected to both ends of the moving pipe 4, a connecting groove 32 is formed in the inside of the stop block 3, a transition block 5 is installed in the connecting groove 32, a U-shaped groove one 31 is formed on the inner wall of the stop block 3, a U-shaped groove two 51 is formed on the outer surface of the transition block 5, one end of the U-shaped groove two 51 is connected to the moving groove 41, the other end of the U-shaped groove two 51 is connected to the inner wall rolling groove 21 of the sliding block 2, the U-shaped groove one 31 corresponds to the U-shaped groove two 51;

[0022] The sliding groove 11 and the rolling groove 21 are straight grooves with triangular cross sections, and the sliding groove 11 and the rolling groove 21 are combined into a straight groove with a rhombic cross section;

[0023] The U-shaped groove one 31 and the U-shaped groove two 51 are both triangular in cross section, and the U-shaped groove one 31 and the U-shaped groove two 51 are combined into a U-shaped pipe groove with a rhombic cross section;

[0024] The moving groove 41 is rhombic in cross section, and its two ends are connected to the straight grooves through the U-shaped pipe grooves, forming a ring-shaped roller groove;

[0025] The ring-shaped roller groove formed by the combination of the moving groove 41, the U-shaped pipe groove and the straight groove has a rolling body 6 rolling inside.

[0026] Specifically, during assembly, the guide rail body 1 and the sliding block 2 are correspondingly and adaptively installed through the sliding groove 11 and the rolling groove 21, the moving pipe 4 is installed in the installation groove 22, and the stop block 3 with the transition block 5 at one end of the moving pipe 4 is connected with the sliding block 2. Since the sliding groove 11 on both sides of the guide rail body 1 is a straight groove with a triangular cross section, and the rolling groove 21 on the inner wall of the sliding block 2 is also triangular, when the two are combined, a straight groove with a rhombus cross section is formed. The rolling element 6 is cross-placed in the straight groove, the moving groove 41 and the U-shaped groove at one end of the moving pipe 4. The rolling element 6 installed in the straight groove can accurately limit the movement direction of the sliding block 2, so that the sliding block 2 moves linearly along the guide rail body 1, while ensuring that the sliding block 2 is constrained in two directions, avoiding the left and right deviation or the upward and downward disengagement of the sliding block 2. After the stop block 3 with the rolling element 6 and the transition block 5 is installed on the other side of the sliding block 2, the moving groove 41, the U-shaped pipe groove (formed by combining the U-shaped groove one 31 and the U-shaped groove two 51) and the straight groove (formed by combining the sliding groove 11 and the rolling groove 21) are combined to form a ring-shaped roller groove, effectively utilizing the space inside the sliding block 2 and reducing the occupation of external space. Compared with the cross-roller guide rail of single-direction motion in line, it does not need to reserve too much space for the single-direction motion of the roller, so that the overall size of the sliding block 2 can be designed to be smaller, which can better adapt to the miniaturization demand of the instrument and will not make the instrument too large due to the size of the linear guide rail;

[0027] At the same time, the rolling element 6 is arranged in the ring-shaped roller groove and circulates and rolls in the ring-shaped roller groove. Since the shape of the groove is regular and the parts are connected closely, the movement of the rolling element 6 is more uniform and stable. This helps to reduce the vibration and jumping of the sliding block 2 during movement, and for equipment that needs high-precision positioning (such as precision machine tools, optical instruments, etc.), the machining precision or measurement precision of the equipment can be improved;

[0028] The rolling element 6 is a cylindrical roller. When the cross-arranged rollers work, they can automatically decompose the forces from different directions, such as vertical pressure, horizontal tension or oblique composite force. The multi-directional load-carrying capacity enables the linear guide rail to remain stable in a complex stress environment and better adapt to the stress changes in various actual working conditions;

[0029] The rolling body 6 rolls in the annular rolling groove, and the friction mode between the sliding block 2 and the guide rail body 1 is changed from sliding friction to rolling friction. The rolling friction coefficient is much smaller than the sliding friction coefficient, which makes the driving force required when the sliding block 2 moves on the guide rail body 1 smaller, reduces the energy loss, and the inner circulation structure can make each part of the rolling body 6 participate in the bearing and rolling process. Since the rolling body 6 is in circulation, the rolling body 6 in each area has the opportunity to contact the guide rail and bear the load during the movement, which avoids the situation of local excessive wear of the roller.

[0030] Working principle: when the device is used, the guide rail body 1 is placed on the workbench to keep it horizontal and stable. Then, the sliding block 2 is fitted and installed on the two sides of the sliding groove 11 of the guide rail body 1 through the rolling groove 21 on the inner wall of the sliding block 2, the moving pipe 4 is installed into the installation groove 22 of the sliding block 2, and the moving pipe 4 is installed firmly and tightly combined with the inner wall of the installation groove 22. Then, the stop block 3 with the transition block 5 is installed at one end of the moving pipe 4, the transition block 5 is inserted into the connecting groove 32 of the stop block 3, and the connection is ensured to be tight, the rolling body 6 is crossed and placed into the straight groove, the moving groove 41 of the moving pipe 4 and the U-shaped groove at one end of the moving pipe 4, and after the rolling body 6 is placed, the other side stop block 3 with the rolling body 6 and the transition block 5 is installed on the sliding block 2. During the installation process, it is ensured that the U-shaped groove one 31 of the stop block 3 and the U-shaped groove two 51 of the transition block 5 accurately correspond, and are well adapted to the position of the rolling body 6, so as to realize that the moving groove 41, the U-shaped pipe groove and the straight groove are combined to form an annular rolling groove, and the rolling body 6 can realize inner circulation in the annular rolling groove.

[0031] The above shows and describes the basic principle and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above-mentioned exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although the present application is described in the form of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. Linear guide with inner circulating crossed rollers, comprising a guide body (1), characterized by the fact that: The both sides of the guide rail body (1) are provided with sliding grooves (11), the guide rail body (1) is slidably and adaptively installed with a sliding block (2), the inner wall of the sliding block (2) is provided with rolling grooves (21) on both sides, the rolling grooves (21) correspond to the sliding grooves (11), the sliding block (2) is provided with an installation groove (22), the installation groove (22) is adaptively installed with a moving pipe (4), the inside of the moving pipe (4) is provided with a moving groove (41), the both ends of the moving pipe (4) are connected with mutually symmetrical stop blocks (3), the inside of the stop block (3) is provided with an installation connecting groove (32), the connecting groove (32) is installed with a transition block (5), the inner wall of the stop block (3) is provided with a U-shaped groove one (31), the outer surface of the transition block (5) is provided with a U-shaped groove two (51), one end of the U-shaped groove two (51) is connected with the moving groove (41), the other end of the U-shaped groove two (51) is connected with the inner wall rolling groove (21) of the sliding block (2), the U-shaped groove one (31) corresponds to the U-shaped groove two (51).

2. The linear guide rail with inner circulation cross-rollers according to claim 1, characterized in that: The sliding grooves (11) and the rolling grooves (21) are straight grooves with triangular cross sections, the sliding grooves (11) and the rolling grooves (21) are combined into straight grooves with rhombus cross sections.

3. The linear guide rail with inner circulation cross-rollers according to claim 2, characterized in that: The U-shaped groove one (31) and the U-shaped groove two (51) are both triangular in cross section, the U-shaped groove one (31) and the U-shaped groove two (51) are combined into U-shaped pipe grooves with rhombus cross sections.

4. The linear guide rail with inner circulating cross-rollers according to claim 3, wherein: The moving groove (41) is rhombus in cross section, the both ends of the moving groove (41) are connected with the straight grooves through the U-shaped pipe grooves, forming a ring-shaped roller groove.

5. The linear guide rail with inner circulating cross-rollers according to claim 4, wherein: The ring-shaped roller groove formed by the combination of the moving groove (41), the U-shaped pipe groove and the straight groove is internally provided with rolling bodies (6).

Images