A gear and rack driven precision displacement stage

Abstract

This utility model discloses a gear and rack driven precision displacement stage, belonging to the technical field of displacement equipment. It includes a slide rail and a slide table. The slide table is slidably connected to the slide rail, and a rack is fixedly connected to the slide rail. A gear is rotatably connected inside the slide table, and the gear meshes with the rack. One end of the gear is fixedly connected to a rotating rod, which extends movably through to one side of the slide table. Threaded rods are threaded to both symmetrical ends of the slide table. Elastic clamping blocks are fixedly connected to the ends of the two threaded rods that are close to each other, and both elastic clamping blocks are located inside the slide table corresponding to the gear. In this utility model, after the slide table is adjusted, rotating the two threaded rods allows the two elastic clamping blocks to elastically clamp the gear, restricting its rotation without damaging it, thus stabilizing the slide table in the desired position. Moreover, because the gear surface is provided with meshing teeth, the two elastic clamping blocks maintain a high degree of fixation when clamping the gear.

Description

Technical Field

[0001] This utility model relates to the field of displacement equipment technology, and more specifically, to a gear and rack driven precision displacement stage. Background Technology

[0002] The gear and rack precision displacement stage is a high-precision positioning device that integrates gear and rack transmission and dovetail groove guide structure. Its core advantage lies in the balance between rapid feeding capability and lightweight design. The feeding mechanism adopts gear and rack meshing, which can achieve longer stroke and faster adjustment speed compared with traditional screw transmission.

[0003] Currently, gear and rack precision displacement stages mainly consist of a slide rail, a slide table, a dovetail rack, and meshing gears. The rack is located on the slide rail, and the gear is located inside the slide table. Through the meshing of the rack and gear, rotating the gear can drive the slide table to move on the slide rail, thereby achieving precise positioning and adjustment. Most existing gear and rack driven precision displacement stages require the use of positioning screws to tighten the slide rail from one side after adjusting the position via the gear and rack, so as to stabilize the slide table on the slide rail and prevent it from moving after being adjusted to the desired position. However, simply using screws to tighten the slide rail to fix the slide table not only results in poor fixing effect, but the screws can also easily damage the slide rail. Therefore, this utility model proposes a gear and rack driven precision displacement stage. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a gear and rack driven precision displacement stage. This aims to solve the problem that in the prior art, after adjusting the position using gears and racks, a positioning screw is still needed to tighten the slide rail from one side to stabilize the slide rail and prevent movement after the slide rail has been adjusted to the desired position. However, simply using screws to tighten the slide rail to fix the slide rail not only results in poor fixation but also easily damages the slide rail.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A gear and rack driven precision displacement stage includes a slide rail and a slide table. The slide table is slidably connected to the slide rail, and a rack is fixedly connected to the slide rail. A gear is rotatably connected inside the slide table and meshes with the rack. A rotating rod is fixedly connected to one end of the gear and extends movably through to one side of the slide table. Threaded rods are threaded to both symmetrical ends of the slide table. Elastic clamping blocks are fixedly connected to the adjacent ends of the two threaded rods, and both elastic clamping blocks are located inside the slide table and correspond to the gear. Rotary sleeves are rotatably connected to the circumferential surfaces of the two threaded rods. Two elastic pressing blocks are slidably connected inside the slide table, and both elastic pressing blocks correspond to the rack. A connecting rod assembly is movably hinged between the two elastic pressing blocks and the two rotating sleeves via hinge shafts.

[0009] As a preferred embodiment of this utility model, the slide rail seat is provided with a positioning groove, and the rack is located in the positioning groove.

[0010] As a preferred embodiment of this utility model, a scale mark is provided on one side of the slide rail base, and a positioning mark is provided on one side of the slide table, with the positioning mark corresponding to the scale mark.

[0011] As a preferred embodiment of this utility model, an adjustment knob is fixedly connected to the end of the rotating rod away from the gear, and the adjustment knob is located on one side of the slide table.

[0012] As a preferred embodiment of this utility model, each of the two threaded rods has a locking knob fixedly connected to one end of the two threaded rods that are far apart, and the two locking knobs are located on the symmetrical sides of the slide table.

[0013] As a preferred embodiment of this utility model, the circumferential surfaces of the adjustment knob and the two locking knobs are all engraved with anti-slip textures.

[0014] As a preferred embodiment of this utility model, the circumferential surfaces of the two threaded rods are provided with rotating grooves, and the inner circumferential walls of the two rotating sleeves are fixedly connected with circular protrusions, and the two circular protrusions are respectively rotatably connected in the two rotating grooves.

[0015] As a preferred embodiment of this utility model, the inner wall of the slide table is provided with two sliding grooves, and each of the two elastic clamping blocks is fixedly connected with a sliding protrusion, and the two sliding protrusions are respectively slidably connected in the two sliding grooves.

[0016] As a preferred embodiment of this utility model, the slide rail base is provided with two sets of mounting holes, and each set of mounting holes is provided with multiple holes distributed at equal intervals.

[0017] As a preferred embodiment of this utility model, the top of the slide table is provided with multiple connection holes.

[0018] 3. Beneficial effects

[0019] Compared with existing technologies, the advantages of this utility model are:

[0020] (1) In this scheme, when adjusting the displacement of the slide table, the rotating rod is used to make the gear rotate. The gear meshes with the rack to make the slide table slide on the slide rail seat, thereby realizing the precise adjustment of the slide table. After the slide table is adjusted, by rotating the two threaded rods, the two elastic clamping blocks can be elastically clamped on the gear, limiting its rotation without damaging the gear, so that the slide table can be stabilized in the required position. Moreover, since the gear surface is provided with meshing teeth, the two elastic clamping blocks can maintain a high fixing effect when clamping the gear.

[0021] (2) In this scheme, when the two elastic clamping blocks clamp the gear to fix the slide, the two threaded rods drive the two rotating sleeves to move the two connecting rod assemblies down. The two elastic clamping blocks are elastically pressed onto the rack. By contacting the dovetail groove on the rack, the friction is increased, which can further improve the stability of the slide after it moves. Compared with the screw to fix the slide, the stability is better. Attached Figure Description

[0022] Figure 1 This is the front view of the present invention;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a structural diagram of the slide table in this utility model;

[0025] Figure 4 In this utility model Figure 3 Exploded view.

[0026] Explanation of the labels in the diagram:

[0027] 1. Slide rail seat; 2. Rack; 3. Slide table; 4. Gear; 41. Rotating rod; 5. Threaded rod; 6. Elastic clamping block; 7. Rotating sleeve; 8. Elastic pressing block; 9. Connecting rod assembly; 10. Positioning groove; 11. Scale mark; 12. Positioning mark; 13. Adjusting knob; 14. Locking knob; 15. Rotating groove; 16. Circular protrusion; 17. Slide groove; 18. Sliding protrusion; 19. Mounting hole; 20. Connecting hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example:

[0032] Please see Figure 1-4 A gear and rack driven precision displacement stage includes a slide rail 1 and a slide table 3. The slide table 3 is slidably connected to the slide rail 1. A rack 2 is fixedly connected to the slide rail 1. A gear 4 is rotatably connected inside the slide table 3 and meshes with the rack 2. A rotating rod 41 is fixedly connected to one end of the gear 4 and extends movably through to one side of the slide table 3. Threaded rods 5 are threadedly connected to both symmetrical ends of the slide table 3. Elastic clamping blocks 6 are fixedly connected to the near ends of the two threaded rods 5 and are located inside the slide table 3 corresponding to the gear 4. Rotary sleeves 7 are rotatably connected to the circumferential surfaces of the two threaded rods 5. Two elastic pressing blocks 8 are slidably connected inside the slide table 3 and are corresponding to the rack 2. A connecting rod assembly 9 is movably hinged between the two elastic pressing blocks 8 and the two rotating sleeves 7 via hinge shafts.

[0033] In this embodiment, the slide table 3 is slidably mounted on the slide rail seat 1, so that the gear 4 meshes with the rack 2. When the slide table 3 needs to be adjusted in displacement, the gear 4 is rotated by rotating the rotating rod 41. The gear 4 meshes with the rack 2, causing the slide table 3 to slide on the slide rail seat 1, thereby achieving precise adjustment of the slide table 3 on the slide rail seat 1. After adjustment, the two threaded rods 5 are rotated to bring the two elastic clamping blocks 6 closer to the gear 4. The two elastic clamping blocks 6 elastically clamp the gear 4, increasing the friction of the gear 4 rotation, so that the slide table 3 remains stable on the slide rail seat 1. At the same time, during the rotation of the two threaded rods 5, the two rotating sleeves 7 are driven to move closer to each other. The two rotating sleeves 7, through the two connecting rod assemblies 9, cause the two elastic pressing blocks 8 to slide downward in the slide table 3 and contact the rack 2, further increasing the resistance between the slide table 3 and the slide rail seat 1, so that the slide table 3 remains stable on the slide rail seat 1 after adjustment.

[0034] Specifically, the slide rail seat 1 has a positioning groove 10, and the rack 2 is located in the positioning groove 10.

[0035] In this embodiment, the positioning groove 10 is used to position the rack 2 so that the rack 2 can be accurately installed on the slide rail seat 1.

[0036] Specifically, a scale mark 11 is provided on one side of the slide rail seat 1, and a positioning mark 12 is provided on one side of the slide table 3, with the positioning mark 12 corresponding to the scale mark 11.

[0037] In this embodiment, when the slide table 3 is adjusted for displacement, the positioning mark 12 corresponds to the adjustment knob 13, which makes it convenient for the staff to determine the moving position of the slide table 3.

[0038] Specifically, an adjustment knob 13 is fixedly connected to the end of the rotating rod 41 away from the gear 4, and the adjustment knob 13 is located on one side of the slide table 3.

[0039] In this embodiment, the gear 4 is rotated by adjusting the knob 13 to rotate the rotating rod 41, and adjusting the knob 13 makes it easier to rotate the locking knob 14.

[0040] Specifically, each of the two threaded rods 5 has a locking knob 14 fixedly connected to one end of the two threaded rods 5 that are far apart, and the two locking knobs 14 are located on the symmetrical sides of the slide table 3.

[0041] In this embodiment, two locking knobs 14 can drive the two threaded rods 5 to rotate, and the two locking knobs 14 make the rotation of the two threaded rods 5 more convenient.

[0042] Specifically, the circumferential surfaces of the adjustment knob 13 and the two locking knobs 14 are engraved with anti-slip textures.

[0043] In this embodiment, the anti-slip texture increases the friction on the surfaces of the adjustment knob 13 and the two locking knobs 14, making it easier for workers to hold and rotate the adjustment knob 13 and the two locking knobs 14.

[0044] Specifically, the two threaded rods 5 are provided with rotating grooves 15 on their circumferential surfaces, and the two rotating sleeves 7 are fixedly connected with circular protrusions 16 on their circumferential inner walls, and the two circular protrusions 16 are respectively rotatably connected in the two rotating grooves 15.

[0045] In this embodiment, the two rotating sleeves 7 are rotatably connected to the two threaded rods 5 through two rotating grooves 15 and two circular protrusions 16, so that when the two threaded rods 5 rotate, they will not drive the two rotating sleeves 7 to rotate, but can only push the two rotating sleeves 7 to move and press down the two elastic pressing blocks 8.

[0046] Specifically, the inner wall of the slide table 3 has two slide grooves 17, and each of the two elastic clamping blocks 8 is fixedly connected with a sliding protrusion 18, and the two sliding protrusions 18 are slidably connected to the two slide grooves 17 respectively.

[0047] In this embodiment, the sliding connection between the two sliding protrusions 18 and the two sliding grooves 17 makes the movement of the two elastic clamping blocks 8 within the slide table 3 more stable.

[0048] Specifically, the slide rail base 1 has two sets of mounting holes 19, and each set of mounting holes 19 is provided with multiple holes distributed at equal intervals.

[0049] In this embodiment, the two sets of equidistant mounting holes 19 enable the slide rail seat 1 to be installed under uniform force, ensuring the stability of the slide rail seat 1 after installation.

[0050] Specifically, the top of the slide 3 has multiple connection holes 20.

[0051] In this embodiment, multiple connection holes 20 are used to install the required equipment on the slide table 3, so that the slide table 3 can drive the required equipment to perform precise position adjustment.

[0052] Working principle: When adjusting the displacement of the slide table 3, rotating the rotating rod 41 causes the gear 4 to rotate. The gear 4 meshes with the rack 2, causing the slide table 3 to slide on the slide rail 1, completing the precise adjustment of the slide table 3 on the slide rail 1. After the slide table 3 is adjusted, rotating the two threaded rods 5 causes the two elastic clamping blocks 6 to move closer to the gear 4. The two elastic clamping blocks 6 elastically clamp the gear 4, increasing the frictional force of the gear 4's rotation and restricting it, thereby keeping the slide table 3 stable on the slide rail 1. At the same time, during the rotation of the two threaded rods 5, they rotate within the two rotating sleeves 7 respectively, pushing the two rotating sleeves 7 closer together. The two rotating sleeves 7, through the two connecting rod assemblies 9, cause the two elastic clamping blocks 6 to move closer together. The clamping block 8 slides downward within the slide table 3, and the two elastic clamping blocks 8 press down to contact the rack 2, further increasing the resistance between the slide table 3 and the slide rail seat 1, so that the slide table 3 remains stable on the slide rail seat 1 after adjustment. When the slide table 3 needs to move again, by rotating the two threaded rods 5 in the opposite direction, the two threaded rods 5 pull the two elastic clamping blocks 6 and the two rotating sleeves 7 away from each other. The two elastic clamping blocks 6 release their clamping on the gear 4, and the two rotating sleeves 7 pull the two elastic clamping blocks 8 upward through the two connecting rod assemblies 9, so that the two elastic clamping blocks 8 are reset away from the rack 2, thereby releasing the fixation on the slide table 3. By rotating the rotating rod 41 to drive the gear 4, the precise displacement adjustment of the slide table 3 can be achieved again.

[0053] 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 its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A precision displacement stage of rack and pinion drive type, comprising a slide rail seat (1) and a slide table (3), characterized in that: The slide table (3) is slidably connected to the slide rail seat (1). A rack (2) is fixedly connected to the slide rail seat (1). A gear (4) is rotatably connected inside the slide table (3), and the gear (4) meshes with the rack (2). A rotating rod (41) is fixedly connected to one end of the gear (4), and the rotating rod (41) moves through to one side of the slide table (3). Threaded rods (5) are threaded to both symmetrical ends of the slide table (3). The two threaded rods (5) are close to each other. One end is fixedly connected to an elastic clamping block (6), and the two elastic clamping blocks (6) are located in the slide (3) and correspond to the gear (4). The circumferential surfaces of the two threaded rods (5) are rotatably connected to a rotating sleeve (7). The slide (3) is slidably connected to two elastic pressing blocks (8), and the two elastic pressing blocks (8) correspond to the rack (2). The two elastic pressing blocks (8) are respectively hinged to the two rotating sleeves (7) through a hinge shaft and a connecting rod assembly (9).

2. The precision displacement stage of claim 1, wherein: The slide rail seat (1) is provided with a positioning groove (10), and the rack (2) is located in the positioning groove (10).

3. The precision displacement stage of claim 2, wherein: The slide rail base (1) has a scale mark (11) on one side and the slide table (3) has a positioning mark (12) on one side, and the positioning mark (12) corresponds to the scale mark (11).

4. The precision displacement stage of claim 3, wherein: The end of the rotating rod (41) away from the gear (4) is fixedly connected to an adjustment knob (13), and the adjustment knob (13) is located on one side of the slide (3).

5. The precision displacement stage of claim 4, wherein: The two threaded rods (5) are fixedly connected to a locking knob (14) at their far ends, and the two locking knobs (14) are located on the symmetrical sides of the slide (3).

6. The precision displacement stage of claim 5, wherein: The circumferential surfaces of the adjustment knob (13) and the two locking knobs (14) are engraved with anti-slip textures.

7. The precision displacement stage of claim 6, wherein: The two threaded rods (5) are provided with rotating grooves (15) on their circumferential surfaces, and the two rotating sleeves (7) are fixedly connected with circular protrusions (16) on their circumferential inner walls, and the two circular protrusions (16) are respectively rotatably connected in the two rotating grooves (15).

8. The precision displacement stage of claim 7, wherein: The inner wall of the slide (3) has two slide grooves (17), and each of the two elastic pressing blocks (8) is fixedly connected with a sliding protrusion (18), and the two sliding protrusions (18) are slidably connected in the two slide grooves (17).

9. The precision displacement stage of claim 8, wherein: The slide rail base (1) has two sets of mounting holes (19), and each set of mounting holes (19) is provided with multiple holes that are evenly distributed.

10. The precision displacement stage of claim 9, wherein: The top of the slide (3) has multiple connection holes (20).

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