Linear guide rail positioning device for high-precision mechanical equipment

Abstract

The utility model relates to the technical field of linear guide rails, and discloses a high-precision mechanical equipment linear guide rail positioning device which comprises a U-shaped bottom plate, a working table is fixedly connected to the top of the U-shaped bottom plate, two rectangular holes are formed in the two sides of the working table respectively, and a moving block is connected into each rectangular hole in a sliding mode. A guide rod is fixedly connected between the two ends of each rectangular hole, each guide rod slidably penetrates through the moving blocks close to each other, a round hole matched with the guide rod is formed in each moving block, the tops of the two moving blocks on the same side are fixedly connected with the same extrusion plate, and the bottoms of the two moving blocks on the same side are fixedly connected with the same T-shaped plate; the ends, close to each other, of the bottoms of the two T-shaped plates are fixedly connected with sliding rods. According to the utility model, the sliding plate can be quickly and reliably locked at any position in the whole travel range of the guide rail, the positioning error is controlled within an extremely small range, the flexible positioning requirement under complex working conditions is effectively met, and the processing adaptability of equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of linear guide technology, and in particular to a high-precision linear guide positioning device for mechanical equipment. Background Technology

[0002] In modern manufacturing, high-precision mechanical equipment is widely used in aerospace, semiconductor manufacturing, and precision instrument processing, placing extremely high demands on the processing and assembly accuracy of parts. Linear guides, as core components for achieving high-precision linear motion, directly affect the overall performance and product quality of the equipment through their positioning accuracy. A search revealed Chinese patent CN221033630U, which discloses a linear guide positioning device, relating to the field of linear guide technology. It includes a guide rail and a slider; a slider is slidably mounted on the guide rail, and a connecting post is mounted on the side of the guide rail away from the slider. The connecting post connects to a strip-shaped electromagnet parallel to the guide rail, and the electromagnet is equipped with serrated racks located on both sides of the guide rail. Positioning components are mounted on both sides of the slider, each including a toothed plate that meshes with the racks. The toothed plate and the slider are slidably connected in a direction perpendicular to the racks; the toothed plate is made of a magnetic material. This device uses an electromagnet for driving and positioning, resulting in a firm and stable fixation that is not prone to slippage and avoids damage to the slide rail. Furthermore, this device requires no manual operation and eliminates the need for connecting wires or pipes to the slider that could affect the sliding effect, ensuring the normal use of the linear guide rail.

[0003] The linear guide positioning device in the aforementioned patent has the following shortcomings: the device uses an electromagnet to make the rack and the toothed plate contact each other. Under the action of the rack and the toothed plate, the slider cannot move, thus achieving positioning. However, since the toothed plate can only be stable and not slip when it is engaged with the teeth of the rack, even a slight deviation will cause the positioning to be unstable. This makes it impossible to achieve a precise positioning of the slider of the linear guide, reducing its practicality. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision linear guide positioning device for mechanical equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-precision linear guide positioning device for mechanical equipment includes a U-shaped base plate. A worktable is fixedly connected to the top of the U-shaped base plate. Two rectangular holes are opened on both sides of the worktable. A movable block is slidably connected in each rectangular hole. A guide rod is fixedly connected between the two ends of each rectangular hole. Each guide rod slides through adjacent movable blocks. Each movable block has a circular hole adapted to the guide rod. The top of the two movable blocks on the same side is fixedly connected to the same extrusion plate. The bottom of the two movable blocks on the same side is fixedly connected to the same T-shaped plate. Sliding rods are fixedly connected to the bottom of the two T-shaped plates at their adjacent ends. Two mounting plates are fixedly connected to the middle of the bottom of the worktable. A sliding rod is fixedly connected between the two ends of the two mounting plates. The same T-shaped screw block is slidably fitted on the circumferential surface of the two sliding rods. Circular holes adapted to the sliding rods are opened on both sides of the T-shaped screw block. Oblique holes are opened on both sides of the bottom of the T-shaped screw block. Each sliding rod is slidably connected in adjacent oblique holes.

[0007] Preferably, the two mounting plates are rotatably connected by the same second lead screw, and the thread of the second lead screw passes through a T-shaped screw block. A lead screw nut adapted to the second lead screw is fixedly sleeved in the middle of the T-shaped screw block, and a worm gear is fixedly connected to one end of the second lead screw through the mounting plate.

[0008] Preferably, two connecting plates are fixedly connected to the bottom of the worktable near the worm wheel. The bottom of the two connecting plates is rotatably connected to the same worm, and the worm meshes with the worm wheel. The cooperation between the worm and the worm wheel utilizes self-locking to ensure that the second lead screw is always in a stable state and will not wobble when it is not rotating.

[0009] Preferably, a second servo motor is fixedly connected to the outer side of one of the connecting plates, and a worm gear is fixedly connected to the output end of the second servo motor through the connecting plate.

[0010] Preferably, both ends of the top of the worktable are fixedly connected to fixed plates, a shaft frame is fixedly connected to one end of the top of the worktable, and the same first lead screw is rotatably connected between the shaft frame and the fixed plate at the other end. A first servo motor is fixedly connected to the outside of the fixed plate near the shaft frame, and the output end of the first servo motor passes through the fixed plate and is fixedly connected to one end of the first lead screw through a coupling. Guide rails are fixedly connected to both sides of the top of the worktable.

[0011] Preferably, a sliding plate is screwed onto the first lead screw, and a lead screw nut adapted to the first lead screw is fixedly connected to the bottom of the sliding plate.

[0012] Preferably, sliders are fixedly connected to both sides of the bottom of the sliding plate, and the sliders are adapted to the guide rail. L-shaped plates are fixedly connected to both sides of the sliding plate, and the L-shaped plates are adapted to the extrusion plate. The extrusion plate and the L-shaped plate extrude each other, so that the sliding plate will not shake after it stops.

[0013] The beneficial effects of this utility model are as follows:

[0014] By employing technologies such as L-shaped plates, extrusion plates, T-shaped plates, oblique holes, T-shaped screw blocks, a second lead screw, a worm gear, and a second servo motor, when the sliding plate needs to be positioned, the second servo motor drives the second lead screw to rotate, causing the T-shaped screw block to move. This, in turn, causes the two extrusion plates to move away from each other and extrude the L-shaped plate, allowing the sliding plate to be positioned and locked at any position without slipping. This effectively solves the problem of inaccurate positioning mentioned in the background technology, and enables the sliding plate to be quickly and reliably locked at any position within the entire stroke range of the guide rail. The positioning error is controlled within a very small range, effectively meeting the flexible positioning requirements under complex working conditions and improving the processing adaptability of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a high-precision linear guide positioning device for mechanical equipment proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the structure at the top of the worktable of a high-precision linear guide rail positioning device for mechanical equipment proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the structure at the bottom of the worktable of a high-precision linear guide rail positioning device for mechanical equipment proposed in this utility model.

[0018] Figure 4 This utility model proposes a high-precision linear guide positioning device for mechanical equipment. Figure 3 An enlarged structural diagram of point A.

[0019] In the diagram: 1. U-shaped base plate; 2. Worktable; 201. Guide rail; 202. Fixing plate; 203. First servo motor; 204. First lead screw; 205. Shaft bracket; 206. Sliding plate; 207. L-shaped plate; 208. Rectangular hole; 209. Guide rod; 3. Extrusion plate; 301. Moving block; 302. T-shaped plate; 303. Sliding rod; 4. T-shaped screw block; 401. Angled hole; 5. Mounting plate; 501. Sliding rod; 502. Second lead screw; 503. Worm gear; 6. Connecting plate; 601. Second servo motor; 602. Worm gear. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-4 A high-precision linear guide positioning device for mechanical equipment includes a U-shaped base plate 1. A worktable 2 is fixedly connected to the top of the U-shaped base plate 1. Two rectangular holes 208 are opened on both sides of the worktable 2. A moving block 301 is slidably connected in each rectangular hole 208. A guide rod 209 is fixedly connected between the two ends of each rectangular hole 208. Each guide rod 209 slides through the adjacent moving block 301. Each moving block 301 has a circular hole adapted to the guide rod 209. The top of the two moving blocks 301 on the same side is fixedly connected to the same extrusion plate 3, and the bottom of the two moving blocks 301 on the same side is fixedly connected to the same T-shaped plate 302. Sliding rods 303 are fixedly connected to the bottom of the T-shaped plates 302 at their close ends. Two mounting plates 5 are fixedly connected to the middle of the bottom of the workbench 2. The same sliding rod 501 is fixedly connected between the two ends of the two mounting plates 5. The same T-shaped screw block 4 is slidably fitted on the circumferential surface of the two sliding rods 501. The T-shaped screw block 4 has round holes on both sides that are adapted to the sliding rods 501. The bottom of the T-shaped screw block 4 has oblique holes 401 on both sides. Each sliding rod 303 is slidably connected in the oblique holes 401 that are close to each other. By moving the T-shaped screw block 4, the two extrusion plates 3 move away from or closer to each other under the cooperation of the oblique holes 401 and the sliding rods 303.

[0022] In this utility model, the same second lead screw 502 is rotatably connected between the two mounting plates 5, and the second lead screw 502 is threaded through the T-shaped screw block 4. The T-shaped screw block 4 is fixedly fitted with a lead screw nut that matches the second lead screw 502 in the middle, and one end of the second lead screw 502 is fixedly connected to a worm gear 503 through the mounting plate 5.

[0023] In this utility model, two connecting plates 6 are fixedly connected to the bottom of the workbench 2 near the worm wheel 503. The bottom of the two connecting plates 6 is rotatably connected to the same worm 602, and the worm 602 meshes with the worm wheel 503.

[0024] In this utility model, a second servo motor 601 is fixedly connected to the outer side of one of the connecting plates 6, and a worm gear 602 is fixedly connected to the output end of the second servo motor 601 through the connecting plate 6. By rotating the second servo motor 601 in both directions, the T-shaped screw block 4 can be moved. The worm wheel 503 and the worm gear 602 cooperate to achieve self-locking, so that the second lead screw 502 will not shake after stopping, thus improving the stability of the sliding plate 206.

[0025] In this utility model, both ends of the top of the workbench 2 are fixedly connected to a fixing plate 202. A shaft bracket 205 is fixedly connected to one end of the top of the workbench 2, and the shaft bracket 205 and the fixing plate 202 at the other end are rotatably connected to the same first lead screw 204. A first servo motor 203 is fixedly connected to the outside of the fixing plate 202 near the shaft bracket 205, and the output end of the first servo motor 203 passes through the fixing plate 202 and is fixedly connected to one end of the first lead screw 204 through a coupling. Guide rails 201 are fixedly connected to both sides of the top of the workbench 2.

[0026] In this invention, a sliding plate 206 is screwed onto the first lead screw 204, and a lead screw nut that matches the first lead screw 204 is fixedly connected to the bottom of the sliding plate 206.

[0027] In this utility model, sliders are fixedly connected to both sides of the bottom of the sliding plate 206, and the sliders are adapted to the guide rail 201. L-shaped plates 207 are fixedly connected to both sides of the sliding plate 206, and the L-shaped plates 207 are adapted to the extrusion plate 3. By extruding the L-shaped plates 207 by the extrusion plate 3, the sliding plate 206 is limited, so that the sliding plate 206 will not slide when working.

[0028] Working principle: When in use, both the first servo motor 203 and the second servo motor 601 are electrically connected to the controller. By controlling the first servo motor 203, the first lead screw 204 moves the sliding plate 206 to the required position, and then the first servo motor 203 stops. However, when precise positioning of the sliding plate 206 is required, after the sliding plate 206 has moved to the required position, the second servo motor 601 is started, causing the second servo motor 601 to drive the worm gear 50 through the worm 602. 3. Rotation causes the second lead screw 502 to move along with the T-shaped screw block 4. With the cooperation of the inclined hole 401 and the sliding rod 303, the two T-shaped plates 302, along with the pressing plate 3 and the moving block 301, move away from each other. This causes the pressing plates 3 on both sides to press against the inner sides of the L-shaped plates 207 at both ends of the sliding plate 206. The surfaces of the pressing plates 3 and the L-shaped plates 207 that come into contact with each other are provided with anti-slip textures. When the pressing plates 3 and the inner sides of the L-shaped plates 207 are in close contact, the sliding plate 206 can be locked and will not slide. Compared with the limiting of the rack and pinion, the accuracy is higher.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-precision linear guide positioning device for a mechanical device, comprising a U-shaped base plate (1), characterized in that, A workbench (2) is fixedly connected to the top of the U-shaped base plate (1). Two rectangular holes (208) are opened on both sides of the workbench (2). A moving block (301) is slidably connected in each rectangular hole (208). A guide rod (209) is fixedly connected between the two ends of each rectangular hole (208). Each guide rod (209) slides through the adjacent moving block (301). Each moving block (301) has a round hole that matches the guide rod (209). The top of the two moving blocks (301) on the same side is fixedly connected to the same extrusion plate (3). The bottom of the two moving blocks (301) on the same side is fixedly connected to the same extrusion plate (3). A T-shaped plate (302) is provided. Two sliding rods (303) are fixedly connected to the bottom of the two T-shaped plates (302) at their close ends. Two mounting plates (5) are fixedly connected to the bottom middle of the workbench (2). The same sliding rod (501) is fixedly connected between the two ends of the two mounting plates (5). The same T-shaped screw block (4) is slidably fitted on the circumferential surface of the two sliding rods (501). The T-shaped screw block (4) has round holes on both sides that are adapted to the sliding rods (501). The bottom of the T-shaped screw block (4) has oblique holes (401) on both sides. Each sliding rod (303) is slidably connected in the oblique holes (401) that are close to each other.

2. The high-precision linear guide positioning device for a machine tool according to claim 1, wherein The two mounting plates (5) are rotatably connected by the same second lead screw (502), and the second lead screw (502) is threaded through the T-type screw block (4). The T-type screw block (4) is fixedly fitted with a lead screw nut that is compatible with the second lead screw (502) in the middle. One end of the second lead screw (502) is fixedly connected to a worm gear (503) through the mounting plate (5).

3. The high-precision linear guide positioning device for mechanical equipment according to claim 1, characterized in that, Two connecting plates (6) are fixedly connected to the bottom of the workbench (2) near the worm wheel (503). The bottom of the two connecting plates (6) is rotatably connected to the same worm (602), and the worm (602) meshes with the worm wheel (503).

4. The linear guide positioning device for high-precision machine tools according to claim 3, characterized in that, One of the connecting plates (6) is fixedly connected to a second servo motor (601) on its outer side, and the output end of the second servo motor (601) is fixedly connected to a worm gear (602) through the connecting plate (6).

5. The high-precision linear guide positioning device for mechanical equipment according to claim 1, characterized in that, The workbench (2) has fixed plates (202) fixedly connected to both ends of the top. A shaft frame (205) is fixedly connected to one end of the top of the workbench (2), and the shaft frame (205) and the fixed plate (202) at the other end are rotatably connected by the same first lead screw (204). A first servo motor (203) is fixedly connected to the outside of the fixed plate (202) near the shaft frame (205), and the output end of the first servo motor (203) passes through the fixed plate (202) and is fixedly connected to one end of the first lead screw (204) through a coupling. Guide rails (201) are fixedly connected to both sides of the top of the workbench (2).

6. The high-precision linear guide positioning device for mechanical equipment according to claim 5, characterized in that, A sliding plate (206) is screwed onto the first lead screw (204), and a lead screw nut that is compatible with the first lead screw (204) is fixedly connected to the bottom of the sliding plate (206).

7. The high-precision linear guide positioning device for mechanical equipment according to claim 6, characterized in that, The sliding plate (206) has sliders fixedly connected to both sides of its bottom, and the sliders are adapted to the guide rail (201). The sliding plate (206) has L-shaped plates (207) fixedly connected to both sides, and the L-shaped plates (207) are adapted to the extrusion plate (3).

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