Built-in fine adjustment sliding table movement mechanism

Abstract

The utility model belongs to the technical field of transmission part machining, and particularly relates to a built-in fine adjustment sliding table movement mechanism which comprises a sliding table, a linear guide rail is arranged in the sliding table, a base is assembled in the linear guide rail in a sliding mode, a moving groove is formed in the inner wall of the sliding table, and two positioning plates are symmetrically assembled in the moving groove. Push rods are installed on the electric telescopic rods and fixedly connected with the positioning plates, moving blocks are assembled in the moving grooves, limiting blocks are installed on the moving blocks, the base drives the limiting blocks to move synchronously, the limiting blocks drive the moving blocks to move synchronously, and after fine adjustment of the base is completed, the two push rods drive the two positioning plates to move horizontally and relatively. The two positioning plates clamp the moving block, locking positioning of the limiting block is achieved, accordingly, locking positioning of the base is achieved, the lead screw does not need to be locked through the structure, deformation or breakage of the lead screw caused by too large locking force is avoided, and the protection performance of the lead screw is improved.

Description

Technical Field

[0001] This utility model relates to the field of transmission component processing technology, specifically a built-in fine-tuning slide motion mechanism. Background Technology

[0002] The transmission components include gears, lead screws, and bearings. The transmission components have extremely high requirements for assembly and machining precision. The built-in micro-adjustment slide can achieve sub-micron level displacement adjustment to ensure that the component fit tolerances meet the design requirements. For example, when cutting gears, the built-in micro-adjustment slide motion mechanism is required to make precise displacement adjustment of the cutting blade position.

[0003] A Chinese patent with authorization announcement number CN 103692226 B discloses a built-in micro-adjustment slide table motion mechanism, including: a slide table fixed base, a micro-motion slide table body, a motion mechanism loading main platform, and a drive mechanism main component. The micro-motion slide table body is mounted on the slide table fixed base, the motion mechanism loading main platform is mounted on the micro-motion slide table body, and the drive mechanism main component is mounted on the motion mechanism loading main platform. A micro-adjustment device is provided inside the slide table fixed base, enabling the micro-motion slide table body to perform micro-adjustment movements on the slide table fixed base. Through the above solution, the built-in micro-adjustment slide table motion mechanism of this invention can position repetitive moving bodies requiring precise alignment and micro-adjustment, making positioning more flexible and convenient. It is particularly suitable for applications such as high-speed cutting spindles and pneumatic spindles, effectively reducing noise and structural wear caused by impacts during movement, and greatly improving the accuracy of repetitive positioning; thus filling a gap in the prior art in this structural aspect.

[0004] In order to ensure the stability of the base, the lead screw of the existing built-in fine-tuning slide motion mechanism usually needs to be locked during operation. However, if the locking force is too large, it may cause the lead screw to deform or break, resulting in poor protection of the lead screw. Therefore, a built-in fine-tuning slide motion mechanism is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology, this utility model proposes a built-in fine-tuning slide motion mechanism.

[0006] The technical solution adopted by this utility model to solve its technical problem is a built-in micro-adjustment slide motion mechanism, including a slide, a linear guide rail is provided inside the slide, a lead screw is rotatably installed on the inner wall of the linear guide rail, a base is slidably assembled inside the linear guide rail, a threaded hole is opened in the base, the base is sleeved on the lead screw, and the base cooperates with the lead screw through the threaded hole. A moving groove is opened on the inner wall of the slide, and two positioning plates are symmetrically assembled in the moving groove. The positioning plates are provided with first locking patterns. Two assembly grooves are symmetrically opened inside the slide, and an electric telescopic rod is fixedly installed on the inner wall of the assembly groove. A push rod is installed on the electric telescopic rod and the push rod is fixedly connected to the positioning plate. A moving block is assembled in the moving groove, and a second locking pattern is symmetrically opened on the side wall of the moving block. A limit block is installed on the moving block and the limit block is fixedly connected to the base. The slide table has an internal mounting groove with a fixed base mounted on its inner wall. A micro-stepping motor is mounted on the fixed base, and the output shaft of the micro-stepping motor is fixedly connected to a lead screw. A displacement sensor is fixedly mounted on the inner wall of the mounting groove, and a transmitter and receiver are mounted on the displacement sensor. A square hole is formed between the mounting groove and the linear guide rail, corresponding to the positions of the transmitter and receiver on the displacement sensor. The base drives the limiting block to move synchronously, and the limiting block drives the moving block to move synchronously. After the base is finely adjusted, two push rods drive two positioning plates to move horizontally relative to each other. The two positioning plates clamp the moving block, realizing the locking and positioning of the limiting block, thereby realizing the locking and positioning of the base. This structure does not require locking the lead screw, avoiding excessive locking force that could deform or break the lead screw, and improving the protection of the lead screw.

[0007] Preferably, the inner wall of the linear guide rail has multiple circular holes, and ball bearings are fitted into the circular holes. The circumferential surface of the ball bearings is tangent to the side wall of the base. A control box is installed on the side wall of the slide table. The control box is connected to a micro-stepping motor, a displacement sensor, and an electric telescopic rod through an internal circuit. By installing ball bearings on the inner wall of the linear guide rail, when the base moves horizontally, there is rolling friction between the base and the ball bearings, which reduces frictional resistance and noise generation, and helps to improve the protection of the base.

[0008] The advantages of this utility model are:

[0009] 1. This utility model uses a base to drive a limiting block to move synchronously, and the limiting block to drive a moving block to move synchronously. After the base is finely adjusted, two push rods drive two positioning plates to move horizontally relative to each other. The two positioning plates clamp the moving block, thereby locking and positioning the limiting block, and thus locking and positioning the base. This structure does not require locking the lead screw, avoiding excessive locking force that could cause the lead screw to deform or break, and is beneficial to improving the protection of the lead screw.

[0010] 2. By installing ball bearings on the inner wall of the linear guide rail, the base moves horizontally and the ball bearings experience rolling friction, which reduces frictional resistance and noise generation, thus improving the protection of the base. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a first-person perspective 3D structural diagram;

[0013] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the slide table;

[0014] Figure 3 A three-dimensional structural diagram of the electric telescopic pole;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure at the limiting block.

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the micro-stepper motor.

[0017] In the diagram: 1. Slide table; 2. Linear guide rail; 3. Lead screw; 4. Mounting slot; 5. Fixed base; 6. Micro stepper motor; 7. Base; 8. Moving slot; 9. Positioning plate; 10. First locking groove; 11. Assembly slot; 12. Electric telescopic rod; 13. Push rod; 14. Moving block; 15. Second locking groove; 16. Limit block; 17. Displacement sensor; 18. Square hole; 19. Ball bearing; 20. Control box. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-5As shown, a built-in fine-tuning slide mechanism includes a slide 1, a linear guide rail 2 inside the slide 1, a lead screw 3 rotatably mounted on the inner wall of the linear guide rail 2, a base 7 slidably mounted inside the linear guide rail 2, a threaded hole in the base 7, and the base 7 is sleeved on the lead screw 3. The base 7 engages with the lead screw 3 through the threaded hole. A moving groove 8 is formed on the inner wall of the slide 1, and two positioning plates 9 are symmetrically mounted in the moving groove 8. The positioning plates 9 have a first locking pattern 10. The slide 1 has symmetrical openings inside. Two assembly slots 11 are provided. An electric telescopic rod 12 is fixedly installed on the inner wall of the assembly slot 11. A push rod 13 is installed on the electric telescopic rod 12 and is fixedly connected to the positioning plate 9. A moving block 14 is assembled in the moving slot 8. A second locking groove 15 is symmetrically opened on the side wall of the moving block 14. A limit block 16 is installed on the moving block 14 and is fixedly connected to the base 7. An installation slot 4 is opened inside the slide table 1. A fixed seat 5 is installed on the inner wall of the installation slot 4 and is mounted on the fixed seat 5. A micro-stepping motor 6 has its output shaft fixedly connected to a lead screw 3. A displacement sensor 17 is fixedly installed on the inner wall of the mounting groove 4. A transmitter and a receiver are installed on the displacement sensor 17. A square hole 18 is opened between the mounting groove 4 and the linear guide rail 2. The square hole 18 corresponds to the position of the transmitter and receiver on the displacement sensor 17. During operation, the existing built-in micro-adjustment slide motion mechanism usually needs to lock the lead screw 3 to ensure the stability of the base 7. However, if the locking force is too large, it may cause the lead screw 3 to deform or break, resulting in poor protection of the lead screw 3. Before the base 7 is finely adjusted, the control box 20 controls the operation of two electric telescopic rods 12. The two push rods 13 on them move horizontally in opposite directions. The two push rods 13 drive the two positioning plates 9 to move horizontally in opposite directions. The two positioning plates 9 release the moving block 14, thereby releasing the limit block 16 and thus releasing the base 7.

[0020] Next, the position of the base 7 is finely adjusted. The micro-stepping motor 6 is controlled by the control box 20. The micro-stepping motor 6 drives the lead screw 3 to rotate, and the lead screw 3 drives the base 7 to move horizontally. During this process, the displacement sensor 17, model HG-C1100, emits a laser beam to the base 7 through the transmitter on the displacement sensor 17. After the laser beam encounters the base 7, it is reflected and received by the receiver. The displacement sensor 17 converts the optical signal into an electrical signal and sends it to the control box 20. The control box 20 obtains the position of the base 7, thereby controlling the operation of the micro-stepping motor 6, realizing precise fine-tuning of the position of the base 7.

[0021] During this process, the base 7 drives the limiting block 16 to move synchronously, and the limiting block 16 drives the moving block 14 to move synchronously. After the base 7 is finely adjusted, the control box 20 controls the two electric telescopic rods 12 to operate again. The two push rods 13 on them move horizontally relative to each other. The two push rods 13 drive the two positioning plates 9 to move horizontally relative to each other. The two positioning plates 9 clamp the moving block 14. The first locking pattern 10 on the two positioning plates 9 and the second locking pattern 15 on the moving block 14 engage, realizing the locking and positioning of the limiting block 16, thereby realizing the locking and positioning of the base 7. This structure does not require locking the lead screw 3, avoiding excessive locking force that could cause the lead screw 3 to deform or break, which is beneficial to improving the protection of the lead screw 3.

[0022] Please see Figure 2 As shown, the linear guide 2 has multiple circular holes on its inner wall, and ball bearings 19 are installed in the holes. The circumferential surface of the ball bearings 19 is tangent to the side wall of the base 7. A control box 20 is installed on the side wall of the slide table 1. The control box 20 is connected to the micro-stepping motor 6, the displacement sensor 17, and the electric telescopic rod 12 through an internal circuit. During operation, the existing built-in micro-adjustment slide table motion mechanism is prone to noise when the base 7 moves, and it is also prone to wear after long-term use, resulting in poor protection for the base 7. By installing ball bearings 19 on the inner wall of the linear guide 2, when the base 7 moves horizontally, there is rolling friction between the base 7 and the ball bearings 19, which reduces frictional resistance and noise generation, thus improving the protection of the base 7.

[0023] Working principle: In the operation of existing built-in fine-tuning slide motion mechanisms, in order to ensure the stability of the base 7, the lead screw 3 usually needs to be locked. However, if the locking force is too large, it may cause the lead screw 3 to deform or break, resulting in poor protection of the lead screw 3. Before the base 7 is finely adjusted, the control box 20 controls the operation of two electric telescopic rods 12, and the two push rods 13 on them move horizontally in opposite directions. The two push rods 13 drive the two positioning plates 9 to move horizontally in opposite directions. The two positioning plates 9 release the moving block 14, thereby releasing the limit block 16. This allows for the release and placement of base 7. Then, the position of base 7 is fine-tuned. Control box 20 controls the operation of micro-stepping motor 6, which drives lead screw 3 to rotate. Lead screw 3 then moves base 7 horizontally. During this process, displacement sensor 17 (model HG-C1100) emits a laser beam towards base 7 via its transmitter. The laser beam is reflected upon encountering base 7 and received by receiver. Displacement sensor 17 converts the optical signal into an electrical signal and sends it to control box 20. Control box 20 then obtains the position of base 7 and controls the operation of micro-stepping motor 6. This allows for precise fine-tuning of the base 7's position. During this process, the base 7 moves the limiting block 16 synchronously, and the limiting block 16 moves the moving block 14 synchronously. After the base 7 is fine-tuned, the control box 20 controls the two electric telescopic rods 12 to operate again, causing the two push rods 13 on them to move horizontally relative to each other. The two push rods 13 move the two positioning plates 9 horizontally relative to each other, and the two positioning plates 9 clamp the moving block 14. The first locking pattern 10 on the two positioning plates 9 and the second locking pattern 15 on the moving block 14 engage, achieving locking and positioning of the limiting block 16, thereby locking the base 7. The positioning mechanism eliminates the need to lock the lead screw 3, preventing excessive locking force from deforming or breaking it and improving its protection. Existing built-in fine-tuning slide mechanisms often produce noise during base 7 operation and wear after prolonged use, resulting in poor protection. By installing balls 19 on the inner wall of the linear guide 2, rolling friction occurs between the base 7 and balls 19 during horizontal movement, reducing frictional resistance and noise generation, thus improving the protection of the base 7.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A built-in fine-tuning slide motion mechanism, characterized in that: The system includes a slide table (1), a linear guide rail (2) inside the slide table (1), a lead screw (3) rotatably mounted on the inner wall of the linear guide rail (2), a base (7) slidably mounted inside the linear guide rail (2), a threaded hole in the base (7), the base (7) being sleeved on the lead screw (3), the base (7) engaging with the lead screw (3) through the threaded hole, a moving groove (8) on the inner wall of the slide table (1), two positioning plates (9) symmetrically mounted inside the moving groove (8), and a first retaining groove (9) on the positioning plate (9). 10) The slide (1) has two symmetrically arranged assembly slots (11). An electric telescopic rod (12) is fixedly installed on the inner wall of the assembly slot (11). A push rod (13) is installed on the electric telescopic rod (12). The push rod (13) is fixedly connected to the positioning plate (9). A moving block (14) is assembled in the moving slot (8). A second locking pattern (15) is symmetrically opened on the side wall of the moving block (14). A limit block (16) is installed on the moving block (14). The limit block (16) is fixedly connected to the base (7).

2. The built-in fine-tuning slide motion mechanism according to claim 1, characterized in that: The slide (1) has an installation groove (4) inside, and a fixing seat (5) is installed on the inner wall of the installation groove (4).

3. The built-in fine-tuning slide motion mechanism according to claim 2, characterized in that: A micro stepper motor (6) is installed on the fixed base (5), and the output shaft of the micro stepper motor (6) is fixedly connected to the lead screw (3).

4. The built-in fine-tuning slide motion mechanism according to claim 2, characterized in that: A displacement sensor (17) is fixedly installed on the inner wall of the mounting groove (4). A transmitter and a receiver are installed on the displacement sensor (17). A square hole (18) is opened between the mounting groove (4) and the linear guide rail (2). The square hole (18) corresponds to the position of the transmitter and receiver on the displacement sensor (17).

5. The built-in fine-tuning slide motion mechanism according to claim 2, characterized in that: The linear guide (2) has multiple circular holes on its inner wall, and ball bearings (19) are fitted inside the circular holes. The circumferential surface of the ball bearings (19) is tangent to the side wall of the base (7).

6. The built-in fine-tuning slide motion mechanism according to claim 1, characterized in that: A control box (20) is installed on the side wall of the slide (1). The control box (20) is connected to the micro stepper motor (6), displacement sensor (17) and electric telescopic rod (12) through internal circuit.

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