Guide rail thermal stress relief device

Abstract

This invention discloses a guide rail thermal stress relief device, including a movable guide rail panel (1), on which a movable guide rail is mounted. The movable guide rail is mounted on a fixed guide rail. One set of movable guide rails is fixedly connected to the movable guide rail panel, and another set has a transition plate (6) between the movable guide rails and the movable guide rail panel (1). One side of the transition plate (6) is in contact with the panel (1), and the other side of the transition plate is fixedly connected to the movable guide rail. There is a force-applying cavity between the movable guide rail panel (1) and the transition plate (6), and a force-applying device is located inside the force-applying cavity. This invention achieves the elimination of thermal stress between the guide rails by setting a transition plate on one set of movable guide rails and setting a pressure plate at the position of the movable guide rail on that side, utilizing the force-applying cavity and the force-applying device inside the force-applying cavity, thus enabling the guide rails to be used normally and ensuring the accuracy of the guide rails during use.

Description

Technical Field

[0001] This invention relates to the field of guide rail technology, and more specifically to a guide rail thermal stress relief device. Background Technology

[0002] Linear motion guides, commonly found in mechanical structures, consist of at least two sets of contacting guide rail pairs and a base, comprising two plates. The base has fixed guide rails, and the plate has moving guide rails. There is a certain distance between the two sets of guide rails. When there is a temperature difference between the plate and the base, especially when the plate and base are made of materials with different coefficients of thermal expansion, the distance between the two sets of rails will differ, leading to abnormal rail contact and affecting normal operation. A common solution is to use flat-V guide rails, where one set of V-shaped guide rails serves as the positioning guide rail, while the other set of flat guide rails can freely extend and retract. Thermal deformation between the plate and the base will not affect the contact of the guide rail pairs. However, this problem persists when using double V-shaped guide rails, rolling guide rail assemblies, and hydrostatic guide rails. Summary of the Invention

[0003] The technical problem to be solved by the present invention is a guide rail thermal stress relief device. By setting a transition plate on one of the sets of moving guide rails and setting a pressure plate on the moving guide rail position on that side, and using a force application cavity and a force application device in the force application cavity, the thermal stress between the guide rails can be eliminated, which can effectively solve the problems existing in the prior art.

[0004] The present invention is achieved through the following technical solution: a guide rail thermal stress relief device, including a moving guide rail panel, a moving guide rail for mounting below the moving guide rail panel, the moving guide rail being mounted on a fixed guide rail, at least one set of a transition plate between the moving guide rail and the moving guide rail panel, one side of the transition plate being in contact with the panel, the other side of the transition plate being fixedly connected to the moving guide rail, a force application cavity between the moving guide rail panel and the transition plate, and a force application device inside the force application cavity;

[0005] The force application device has a force application state and a non-force application state. When force is applied, the moving guide rail panel and the transition plate are pressed together, and the guide rail can work normally.

[0006] When thermal stress needs to be relieved, the force-applying device is released, and an external force is applied. The thermal stress causes the α angle between the moving guide rail panel and the transition plate to automatically return to zero. After returning to zero, the thermal stress is relieved, and the force-applying device applies force to press the moving guide rail panel and the transition plate together, so that the guide rail can work normally.

[0007] As a preferred technical solution, there is a pressure plate with a groove for the moving guide rail to pass through. Several fixing rods connect the pressure plate to the moving guide rail panel and maintain a certain distance, which makes the convex edge of the pressure plate and the transition plate form a force application cavity.

[0008] Alternatively, the pressure plate can be an L-shaped pressure plate, which is fixedly installed on the moving guide rail panel. The L-shaped pressure plate and the convex edge of the transition plate form a force application cavity.

[0009] As a preferred technical solution, the force-applying device is an expansion tube, a hydraulic cylinder, or a pneumatic cylinder.

[0010] As a preferred technical solution, when the force-applying device is a hydraulic cylinder or a pneumatic cylinder, the piston body of the hydraulic cylinder or pneumatic cylinder is fixed on the pressure plate or L-shaped plate, and the piston rod contacts the top transition plate. When force is applied, the transition plate and the moving guide rail panel are pressed together.

[0011] As a preferred technical solution, gravity acts as an external force when the guide rail panel is placed horizontally.

[0012] As a preferred technical solution, when the guide rail panel is placed perpendicular to the horizontal plane, the external force is magnetic attraction.

[0013] As a preferred technical solution, when only one set of moving guide rails and moving guide rail panels are pressed together by the force application device, the other set of moving guide rails is fixed on the guide rail panel.

[0014] The beneficial effects of the present invention are as follows: The present invention provides a transition plate on at least one set of moving guide rails and a pressure plate on that side, thereby forming a force application cavity in the middle. By installing a force application device in the force application cavity, when it is necessary to eliminate thermal stress, the force application device is released. Due to the action of external force, the α angle between the moving guide rail panel and the transition plate automatically returns to zero due to thermal stress. After returning to zero, the thermal stress is eliminated, and the force application device applies force to press the moving guide rail panel and the transition plate together, so that the guide rail can work normally. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of the present invention when a straight-line pressure plate is used. Figure 1 ;

[0017] Figure 2 This is a structural diagram of the present invention when a straight-line pressure plate is used. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of the present invention when using an L-shaped pressure plate. Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the structure of the present invention when using an L-shaped pressure plate. Figure 2 ;

[0020] Figure 5 This is a simplified diagram illustrating the working principle of the present invention;

[0021] Figure 6 This is a simplified diagram of the operation of the double V-rail of the present invention;

[0022] Figure 7 This is a simplified diagram of the operation of the double rolling guide rail of the present invention;

[0023] Figure 8 This is a simplified diagram of the working principle of the double V-shaped ball bearing guide of the present invention;

[0024] Figure 9 This is a simplified diagram of the hydrostatic guide rail of the present invention.

[0025] Figure 10 This is a schematic diagram of the structure of the present invention when using the magnetic force application device;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Moving guide rail mounting plate; 2. First moving guide rail; 3. Second moving guide rail; 4. Pressure plate; 5. Hydraulic cylinder; 6. Transition plate; 7. Piston; 8. Expansion tube; 9. Fixing rod; 41. L-shaped pressure plate; 100. Fixed guide rail; 101. Magnet; 102. Magnetic strip. Detailed Implementation

[0028] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0029] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0030] like Figure 1 As shown, a guide rail thermal stress relief device of the present invention includes a movable guide rail panel, a movable guide rail for mounting below the movable guide rail panel, the movable guide rail being mounted on a fixed guide rail 100, a set of movable guide rails being fixedly connected to the movable guide rail panel, and another set having a transition plate 6 between the movable guide rails and the movable guide rail panel, one side of the transition plate 6 being in contact with the panel, and the other side of the transition plate 6 being fixedly connected to the movable guide rail, and a force-applying cavity being provided between the movable guide rail panel and the transition plate 6, with a force-applying device inside the force-applying cavity;

[0031] The force application device includes a force application device and a non-force application device. When force is applied, the moving guide rail panel and the transition plate 6 are pressed together, and the guide rail can work normally.

[0032] When thermal stress needs to be relieved, the force-applying device is released. Due to gravity, the α angle between the moving guide rail panel and the transition plate 6, caused by thermal stress, automatically returns to zero. After returning to zero, the thermal stress is eliminated. The force-applying device then applies force to press the moving guide rail panel and the transition plate 6 together, allowing the guide rail to operate normally. Figure 5 As shown, in layman's terms, when in normal use, the force-applying device is in a compressed state, while when thermal stress is generated, the force-applying device is released. The principle utilized is to use gravity reset to eliminate the α angle between the moving guide rail panel and the transition plate 6. After elimination, the force-applying device continues to apply force, thereby ensuring the normal use of the guide rail.

[0033] In this embodiment, multiple fixing rods 9 are provided in the force application cavity. The fixing rods 9 connect the moving guide rail panel and the pressure plate 4. The pressure plate 4 and the convex edge of the transition plate 6 form the force application cavity. The pressure plate 4 and the moving guide rail panel are fixedly connected by the fixing rods 9, thereby forming a force application cavity in the middle. Therefore, a force application device can be set in the force application cavity to apply pressure to the transition plate 6 and the pressure plate 4, so that the guide rail can work normally.

[0034] like Figure 1 and Figure 2 As shown, in this embodiment, the pressure plate 4 is a straight-line pressure plate 4, and the pressure plate 4 is provided with a groove for passing through the moving guide rail. Alternatively, the pressure plate 4 can be of other shapes. As long as it can be installed on the moving guide rail and has a structure that forms a force application cavity with the transition plate 6 in the area, it can be applied in this embodiment.

[0035] like Figure 3 and Figure 4 As shown, in another embodiment, the pressure plate 4 here is an L-shaped pressure plate 41. The L-shaped pressure plate 41 is fixedly installed on the moving guide rail panel. The L-shaped pressure plate 41 and the convex edge of the transition plate 6 form a force application cavity. Unlike the straight pressure plate 4, the L-shaped pressure plate 41 can be used here to install the pressure plate 4 at the bottom position of the moving guide rail panel. Therefore, the pressure plate 4 does not need to be installed on the moving guide rail. Alternatively, the force application cavity can be formed between the pressure plate 4 and the transition plate 6, and a force application device can be installed in the force application cavity. By using the working method described above, the elimination of thermal stress can be achieved.

[0036] In this embodiment, as Figures 1-4 As shown, the force-applying device is an expansion tube 8, a hydraulic cylinder 5, or a pneumatic cylinder. The expansion tube 8 can be made of a pipe with an elastic material. When force is required, some medium, such as water, oil, or air, can be injected into it to cause the expansion tube 8 to expand. After the expansion tube 8 expands, it can press the moving guide rail panel and the transition plate 6 together, so that the guide rail can be used normally. When it is necessary to eliminate thermal stress, the internal medium can be discharged to reset the guide rail panel and the transition plate 6, so that the α angle between the guide rail panel and the transition plate 6 automatically returns to zero. After returning to zero, the thermal stress is eliminated.

[0037] like Figure 2 and Figure 3 As shown, when the force-applying device is a hydraulic cylinder 5 or a pneumatic cylinder, the piston rod 7 of the hydraulic cylinder 5 or the pneumatic cylinder contacts the top transition plate 6. The force-applying device can be any structure that can actively control tensioning or relaxation. In this embodiment, hydraulic cylinder 5, pneumatic cylinder, or expansion tube 8 are listed, but it should not be limited to using only such force-applying devices.

[0038] In this embodiment, the fixing rod 9 is a screw for locking, but the fixing rod 9 can also be a threaded rod or the like.

[0039] This invention involves installing a transition plate 6 on one set of moving guide rails and a pressure plate 4 on that side, thus forming a force-applying cavity in the middle. A force-applying device is installed within this cavity. When thermal stress needs to be relieved, the force-applying device is released. Due to the external force, the thermal stress causes the angle α between the moving guide rail panel and the transition plate 6 to automatically return to zero. After returning to zero, the thermal stress is eliminated, and the force-applying device applies force to press the moving guide rail panel and the transition plate 6 together, allowing the guide rail to function normally. When the guide rail is placed horizontally, gravity is the external force; when the guide rail is installed vertically... Figure 10 As shown, a magnetic attraction method is used to apply force. A magnet 101 is set at the bottom of the guide rail panel, and a magnetic strip 102 is set on the fixed guide rail at the position corresponding to the magnet. The two generate a magnetic attraction force, which can also achieve the purpose of the above-mentioned external force. The structure of the magnet can be replaced by an electromagnet.

[0040] The above embodiments illustrate a double V-rail structure. In other embodiments, such as... Figures 6-9 As shown, the guide rail can also be a double rolling guide rail, a double V-shaped ball bearing guide rail, or a hydrostatic guide rail. Any guide rail structure can use the structure described above in this invention to eliminate the thermal stress generated during operation.

[0041] When only one set of moving guide rails is fixedly connected to the moving guide rail panel, the other set of moving guide rails is fixed to the guide rail panel through a transition plate. The force-applying structure listed in this embodiment is one set, but it can actually be designed as two sets as needed. That is, both moving guide rails are provided with transition plates, pressure plates and force-applying devices, which are also within the scope of protection of this invention.

[0042] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A guide rail thermal stress relief device, characterized in that: Includes a moving guide rail panel (1), under which a moving guide rail is installed, the moving guide rail is mounted on a fixed guide rail, and at least one transition plate (6) is provided between the moving guide rail and the moving guide rail panel (1). One side of the transition plate (6) is in contact with the moving guide rail panel (1), and the other side of the transition plate is fixedly connected to the moving guide rail. A pressure plate is provided under the moving guide rail panel, and there is a force application cavity between the moving guide rail panel (1) and the pressure plate, and there is a force application device in the force application cavity. The force application device has a force application state and a non-force application state. When force is applied, the moving guide rail panel (1) and the transition plate (6) are pressed together, and the guide rail can work normally. When thermal stress needs to be eliminated, the force application device is released, and an external force is applied. The thermal stress causes the α angle between the moving guide rail panel (1) and the transition plate (6) to automatically return to zero. After returning to zero, the thermal stress is eliminated. The force application device applies force to press the moving guide rail panel (1) and the transition plate (6) together, so that the guide rail can work normally.

2. The guide rail thermal stress relief device according to claim 1, characterized in that: The pressure plate (4) has a groove for the moving guide rail to pass through. Several fixing rods (9) connect the pressure plate (4) to the moving guide rail panel (1) and maintain a certain distance. This distance makes the convex edge of the pressure plate (4) and the transition plate (6) form a force application cavity.

3. The guide rail thermal stress relief device according to claim 1, characterized in that: The pressure plate is an L-shaped pressure plate (41). The L-shaped pressure plate (41) is fixedly installed on the moving guide rail panel (1). The horizontal edge of the L-shaped pressure plate and the convex edge of the transition plate (6) form a force application cavity, and the vertical edge determines the height of the force application cavity.

4. The guide rail thermal stress relief device according to claim 1, characterized in that: The force-applying device is an expansion tube (8), a hydraulic cylinder (5), or a pneumatic cylinder.

5. The guide rail thermal stress relief device according to claim 4, characterized in that: When the force-applying device is a hydraulic cylinder (5) or a pneumatic cylinder, the cylinder body of the hydraulic cylinder (5) or the pneumatic cylinder is fixed on the pressure plate (4) or the L-shaped pressure plate (41), and the piston rod contacts the top transition plate (6). When force is applied, the transition plate (6) and the moving guide rail panel (1) are pressed together.

6. The guide rail thermal stress relief device according to claim 1, characterized in that: When the guide rail panel is placed horizontally, gravity acts as the external force.

7. The guide rail thermal stress relief device according to claim 1, characterized in that: When the guide rail panel is placed perpendicular to the horizontal plane, the external force is magnetic attraction.

8. The guide rail thermal stress relief device according to claim 1, characterized in that: When only one set of moving guide rails and moving guide rail panel is pressed by the force application device, the other set of moving guide rails is fixed on the guide rail panel.

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