Linear guide rail bidirectional straightening device

Abstract

The utility model relates to the technical field of mechanical guide rail verification, and discloses a linear guide rail two-way straightening device which comprises a bottom plate, a guide rail groove is formed in the center of the bottom plate, connecting tables are symmetrically arranged on the bottom plate in the front-back direction with the guide rail groove as the center line, and clamping jaws are arranged on the left side and the right side of each connecting table through connecting holes. The linear guide rail two-way straightening device comprises a bottom plate, a guide rail groove is formed in the bottom plate, clamping claws are arranged on the left side and the right side of the bottom plate, a straightening push block is arranged between the clamping claws on the left side and the right side through connecting holes, one side of the bottom plate extends outwards towards the guide rail groove, a sliding groove is formed in the sliding plate, and a sliding assembly is arranged on the sliding groove. In the correcting process, due to the fact that the left end and the right end of the bent part of the guide rail are fixed through the clamping claws, the influence on the normal part of the guide rail is low during correcting, and meanwhile due to the fact that the clamping claws and the correcting push blocks are symmetrically arranged, bidirectional correcting of the guide rail can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical guide rail calibration, in particular to a bidirectional straightening device for a linear guide rail. Background Art

[0002] Linear guides can be divided into three types: roller linear guides, cylindrical linear guides, and ball linear guides. They are used to support and guide moving parts to perform reciprocating linear motion in a given direction. As an important functional component and key joint in the machine tool, the accuracy of the rolling linear guide pair directly affects the machining accuracy and performance of the machine tool. The most important parameters are: the running parallelism of the upper reference surface of the slider and the bottom reference surface of the guide in the rolling linear guide pair; the running parallelism of the slider side reference surface and the guide side reference surface. Linear products such as linear guides may bend or twist during the forming process due to incomplete release of residual stress. In addition, linear guides may also be deformed during transportation, installation, and use. Linear guides are precision parts with high requirements for shape accuracy, so correction becomes an indispensable process and is an important process in the production of linear guides.

[0003] When straightening the existing linear guide rails, they are usually fixed on a workbench under a hydraulic cylinder and pressed straight by the hydraulic cylinder. When other parts of the linear guide rail surface need to be pressed straight, the staff needs to untie the linear guide rail and put the linear guide rail back under the hydraulic cylinder for pressing straight, which is troublesome to operate. The straightening of the guide rail can only be straightened in one direction. If the guide rail has an S-shaped bend, the fixed guide rail needs to be reinstalled for secondary straightening, which may cause bending of other parts. At the same time, before the guide rail is straightened, it is often necessary to repeatedly straighten and position the guide rail, which is prone to errors. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides a bidirectional straightening device for a linear guide rail, which has bidirectional straightening and precise correction functions and does not require installation and positioning of the guide rail. It solves the problem that the straightening device can only straighten in a single direction at a time and requires installation and positioning before straightening.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of having a bidirectional straightening function without the need to install and position the guide rail, the utility model provides the following technical solutions: a linear guide bidirectional straightening device, comprising a base plate, a guide rail groove is arranged in the center of the base plate, and a connecting platform is symmetrically arranged on the base plate with the guide rail groove as the center line, and clamping claws are arranged on the left and right sides of the connecting platform through connecting holes, and a correction push block is arranged in the middle of the clamping claws on the left and right sides through the connecting hole, a laser ranging head connected to a display light is arranged in the center of the correction push block, the clamping claw and the correction push block are connected to the driver through a screw rod, a sliding plate extends outward from one side of the base plate in the direction of the guide rail groove, a sliding groove is arranged on the sliding plate, a sliding assembly is arranged on the sliding groove, and the guide rail to be measured is fixed by the sliding assembly.

[0008] Preferably, the contact surfaces of the clamping claw and the correction push block with the guide rail to be measured are all finely machined.

[0009] Preferably, the sliding assembly comprises a sliding block mutually engaged with the sliding groove, the sliding block is connected to a connecting block, and the connecting block is connected to a fixing claw via a connecting plate.

[0010] Preferably, a clamping step is provided on the fixing claw.

[0011] Preferably, auxiliary rollers are provided on the left and right sides of the guide rail groove, and the guide rail to be tested is supported by the auxiliary rollers.

[0012] Preferably, the number of the auxiliary rollers is at least four.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a bidirectional straightening device for a linear guide rail, which has the following beneficial effects:

[0015] 1. This linear guide bidirectional straightening device, through the setting of the correction push block and the clamping claw, enables the device to accurately correct the local bending of the guide rail. During correction, the guide rail to be tested is fixed by the holding claw, and then the bent part of the guide rail is pushed by the correction push block. During the correction process, since the left and right ends of the bent part of the guide rail are fixed by the clamping claws, it can ensure that the impact on the normal part of the guide rail during correction is minimized. At the same time, since the clamping claws and the correction push block are symmetrically arranged, bidirectional correction of the guide rail can be achieved, and one-step correction can be achieved without flipping the guide rail, saving time and effort.

[0016] 2. This linear guide bidirectional straightening device, through the setting of the sliding component, enables the device to clamp and position the guide rail to be measured once, and the subsequent correction process does not need to be re-clamped, which greatly shortens the correction process of the guide rail and improves the correction efficiency. With the setting of the auxiliary roller, the guide rail can move forward smoothly through the sliding component. During the movement, the laser rangefinder on the correction push block is used to accurately measure the straightness of the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the correction process of a bidirectional straightening device for a linear guide in the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of a linear guide bidirectional straightening device in the utility model;

[0019] Figure 3 A top view of the correction process of a linear guide bidirectional straightening device in the utility model;

[0020] Figure 4 The utility model is a side view of the correction process of a linear guide bidirectional straightening device.

[0021] In the figure: 1-base plate, 2-connecting platform, 3-clamping claw, 4-correction push block, 5-display light, 6-laser distance measuring head, 7-driver, 8-screw rod, 9-sliding assembly, 10-guide rail to be measured, 11-auxiliary roller, 101-guide rail groove, 102-sliding plate, 103-slide groove, 901-sliding block, 902-connecting block, 903-connecting plate, 904-fixing claw. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4A linear guide bidirectional straightening device comprises a base plate 1, a guide groove 101 is arranged at the center of the base plate 1, a connecting platform 2 is symmetrically arranged on the base plate 1 with the guide groove 101 as the center line, clamping claws 3 are arranged on the left and right sides of the connecting platform 2 through connecting holes, and a correction push block 4 is arranged in the middle of the clamping claws on the left and right sides through the connecting hole, a laser rangefinder 6 is arranged in the center of the correction push block 4 and is connected to a display light 5, the clamping claw 3 and the correction push block 4 are connected to a driver 7 through a screw rod 8, a sliding plate 102 is extended outwardly from one side of the base plate 1 in the direction of the guide groove 101, a sliding groove 103 is arranged on the sliding plate 102, a sliding component 9 is arranged on the sliding groove 103, and the guide rail 10 to be measured is fixed by the sliding component 9.

[0024] First, assemble the base plate 1, guide groove 101, connecting platform 2, clamping claw 3, correction push block 4, laser rangefinder 6, lead screw 8, driver 7 and sliding plate 102 according to the design drawing. Ensure that all components are installed in the correct position and connected firmly. Select the linear guide that needs to be straightened and ensure that its surface is clean and free of debris. Place the guide rail 10 to be measured in the guide groove 101 on the base plate 1. Ensure that the guide rail is centered with the guide groove 101, that is, the center line of the guide rail coincides with the center line of the guide groove 101. Fix the guide rail 10 to be measured by the fixing claw 904 on the sliding assembly 9. Ensure that the guide rail is stable and motionless in the guide groove 101. Control the movement of the clamping claw 3 and the correction push block 4 by the driver 7. Ensure that the connection between the driver 7 and the lead screw 8 is normal and the movement is smooth. Push the sliding assembly 9 to make the guide rail 10 to be measured move in the guide groove 101. When the guide rail passes through the correction push block 4, the laser rangefinder 6 will emit a laser and shine on the side of the guide rail. Observe the display lights 5 on both sides. If the display lights 5 are on, it means that the straightness of the guide rail at this position does not meet the standard. According to the indication of the display light 5, the control driver 7 drives the correction push block 4 to push the curved part of the guide rail. Gradually adjust the straightness of the guide rail until the display lights 5 on both sides are off, indicating that the guide rail at this position has been straightened. Continue to push the sliding assembly 9 so that other parts of the guide rail 10 to be tested also pass through the correction push block 4, and perform corresponding straightening operations. When all parts of the guide rail 10 to be tested have been straightened, and the display lights 5 on both sides are off at all positions, it means that the straightness of the entire guide rail has met the requirements and the straightening operation is completed.

[0025] The linear guide straightening device uses a laser rangefinder 6 and a display light 5 for precise measurement and indication, which can quickly and accurately find the bending position of the guide rail and perform targeted straightening operations, greatly improving the straightening efficiency. The laser rangefinder 6 can accurately measure the distance from the laser to the side of the guide rail, thereby accurately judging the straightness of the guide rail. At the same time, the intuitive indication of the display light 5 makes the operation easier and reduces errors. The device is suitable for straightening operations of linear guides of different specifications and sizes. By adjusting the position and spacing of the clamping claw 3 and the correction push block 4, it can meet the straightening requirements of different guide rails. The stable design of the bottom plate 1, the connecting platform 2 and the sliding plate 102 ensures the overall stability of the device. At the same time, the reliable connection between the driver 7 and the screw rod 8 ensures that the movement of the clamping claw 3 and the correction push block 4 is smooth and reliable. The operation of the device is simple and intuitive, and the straightening work of the guide rail can be completed by simply following the steps. At the same time, the intuitive indication of the display light 5 makes the operation easier and easier to understand.

[0026] The contact surfaces of the clamping claw 3 and the correction push block 4 with the guide rail 10 to be measured are all finely machined.

[0027] The contact surface after fine machining is smoother, and the friction coefficient between the guide rail 10 to be measured is reduced, thereby reducing the friction resistance that may occur during the straightening process. This not only helps to ensure the smooth progress of the straightening operation, but also reduces the wear and maintenance costs of the equipment. Fine machining ensures a close fit between the clamping claw 3 and the correction push block 4 and the guide rail 10 to be measured. This close fit ensures that the position and posture of the guide rail can be accurately controlled and adjusted during the straightening process, thereby improving the accuracy and effect of the straightening. Due to the reduced friction and improved accuracy, the straightening operation can be carried out more efficiently. This not only shortens the straightening cycle, but also improves production efficiency, saving time and cost for the enterprise.

[0028] The sliding assembly 9 includes a sliding block 901 that is mutually engaged with the sliding groove 103. The sliding block 901 is connected to a connecting block 902. The connecting block 902 is connected to a fixing claw 904 via a connecting plate 903. The fixing claw 904 is provided with an engaging step.

[0029] The mutual clamping design of the slider 901 and the slide groove 103 ensures the smooth movement of the sliding assembly 9 on the slide groove 103. This design reduces the shaking and deviation during the movement, thereby ensuring the stable movement of the guide rail 10 to be tested in the guide groove 101. The connecting block 902 serves as a transition component between the slider 901 and the connecting plate 903, making the connection of the entire sliding assembly 9 more flexible. This design allows the connecting block 902 to be adjusted or replaced when necessary to adapt to the guide rails 10 to be tested of different specifications and sizes. The fixed claw 904 is fixed to the guide rail 10 to be tested by the clamping step. This design is simple and easy to implement, and can quickly and effectively fix the guide rail. At the same time, the design of the clamping step also allows the fixed claw 904 to adapt to guide rails of different thicknesses, thereby improving the versatility and flexibility of the device. Due to the stability and flexibility of the sliding assembly 9, the operator can accurately control the position and movement trajectory of the guide rail 10 to be tested in the guide groove 101. This makes the straightening operation more precise and can accurately identify and correct the curved part of the guide rail.

[0030] Auxiliary rollers 11 are arranged on the left and right sides of the guide rail groove 101, and the guide rail 10 to be tested is supported by the auxiliary rollers 11. The number of the rollers is at least four.

[0031] The presence of the auxiliary roller 11 provides a stable support for the guide rail 10 to be measured. Due to the rolling characteristics of the rollers, they can reduce the direct contact between the guide rail and the guide groove 101, thereby reducing friction and wear. This design makes the guide rail 10 to be measured smoother during movement and reduces the resistance caused by friction. Supporting the guide rail 10 to be measured by the auxiliary roller 11 can reduce the deformation of the guide rail when it is subjected to pressure or gravity. This is very important for maintaining the straightness and accuracy of the guide rail, especially when performing straightening operations. The auxiliary roller 11 shares part of the load, making the guide rail more stable when subjected to force. Due to the stable support of the auxiliary roller 11, the guide rail 10 to be measured can maintain a more stable posture during movement. This helps to ensure that the laser rangefinder 6 can accurately measure the straightness of the guide rail and enables the correction push block 4 to accurately apply thrust. Therefore, this design detail helps to improve the accuracy and effect of the straightening operation. By setting at least four rollers, this design can adapt to guide rails 10 to be measured of different specifications and sizes. Guide rails of different lengths can be accommodated by adjusting the position and spacing of the rollers, increasing the versatility and flexibility of the device.

[0032] Working principle: Place the guide rail 10 to be measured in the guide rail groove 101, support it through the auxiliary roller 11, fix the guide rail through the fixed claw 904 on the sliding assembly 9, ensure that the center line of the guide rail coincides with the center line of the guide rail groove 101, push the sliding assembly 9 to move slowly, and drive the guide rail 10 to be measured to move in the guide rail groove 101. When the guide rail passes through the correction push block 4, the laser rangefinder 6 located on the correction push block 4 emits a laser to illuminate the side of the guide rail 10 to be measured. If both sides are If the distances measured by the laser ranging head 6 are the same, the straightness of the guide rail 10 to be measured meets the standard. If they are different, the display light 5 connected to the laser ranging head 6 lights up, and the clamping claw 3 is controlled to fix the section of the guide rail 10 to be measured. The display light 5 on which side is lit will drive the correction push block 4 on the side of the lit display light 5 to push the curved part of the guide rail until the display lights 5 on both sides are off. The detection and straightening of the guide rail 10 to be measured is completed, and the sliding assembly 9 continues to be pushed to detect and straighten other parts of the guide rail 10 to be measured.

[0033] 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.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A linear guide bidirectional straightening device, comprising a base plate (1), a guide groove (101) being arranged at the center of the base plate (1), and a connecting platform (2) being arranged symmetrically front and rearwardly on the base plate (1) with the guide groove (101) as the center line, characterized in that: The connecting platform (2) is provided with clamping claws (3) on the left and right sides through connecting holes, and a correction push block (4) is provided in the middle of the clamping claws on the left and right sides through connecting holes, and a laser distance measuring head (6) connected to a display light (5) is provided at the center of the correction push block (4). The clamping claws (3) and the correction push block (4) are both connected to a driver (7) through a screw rod (8), and a sliding plate (102) extends outwardly in the direction of the guide groove (101) on one side of the bottom plate (1), and a sliding groove (103) is provided on the sliding plate (102), and a sliding assembly (9) is provided on the sliding groove (103), and the guide rail (10) to be measured is fixed by the sliding assembly (9).

2. A linear guide bidirectional straightening device according to claim 1, characterized in that: The contact surfaces of the clamping claw (3) and the correction push block (4) with the guide rail (10) to be measured are all finely machined.

3. A linear guide bidirectional straightening device according to claim 1, characterized in that: The sliding assembly (9) comprises a sliding block (901) mutually engaged with the sliding groove (103); the sliding block (901) is connected to a connecting block (902); and the connecting block (902) is connected to a fixing claw (904) via a connecting plate (903).

4. A linear guide bidirectional straightening device according to claim 3, characterized in that: The fixing claw (904) is provided with a clamping step.

5. A linear guide bidirectional straightening device according to claim 1, characterized in that: Auxiliary rollers (11) are arranged on the left and right sides of the guide rail groove (101), and the guide rail (10) to be tested is supported by the auxiliary rollers (11).

6. A linear guide bidirectional straightening device according to claim 5, characterized in that: The number of the auxiliary rollers (11) is at least four.

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