Numerical control precision lifting platform based on inclined slider mechanism
By combining the inclined slider mechanism with the drive mechanism, the CNC machine tool lifting table achieves efficient and precise micro-adjustment, solving the problem that traditional lifting tables cannot meet the precision positioning requirements of micro-hole machining of aerospace screws, thus improving machining efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 贵州航天职业技术学院
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-24
AI Technical Summary
The existing CNC machine tool lifting platform is difficult to achieve automated, efficient, and high-precision micron-level fine adjustment, which cannot meet the precision positioning requirements of micro-hole machining of high-temperature alloy screws in the aerospace field, and the traditional lifting mechanism lacks micron-level ultra-precision adjustment capability.
A CNC precision lifting table based on a slant slider mechanism is adopted. By combining the slant slider with a linear guide rail, the slant slider is driven by a drive mechanism to achieve rapid, one-button height compensation adjustment of the worktable. Combined with a ball screw and a motor, precise vertical positioning is achieved, reducing the conversion ratio from horizontal linear motion to vertical linear motion.
The high-precision repeatability of the lifting platform is less than 0.02mm, which improves the single-piece processing efficiency by more than 64%, ensures product consistency and accuracy, and reduces manufacturing costs.
Smart Images
Figure CN224543785U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of CNC machine tools and precision machinery technology, specifically to a CNC precision lifting platform based on a slanted slider mechanism. Background Technology
[0002] In the aerospace field, fasteners such as screws made of difficult-to-machine materials such as high-temperature alloys and titanium alloys have extremely stringent requirements for anti-loosening performance. One of the key manufacturing processes is drilling 4 to 6 micro-holes on the side of the screw to achieve anti-loosening locking. This process (including drilling, chamfering, tapping, etc.) must be completed using a dedicated drilling and tapping center. Among these, the accuracy of the drilling center height is a core indicator that determines product quality. Military-grade requirements stipulate that the deviation between the drilling center axis and the geometric axis of the stud must be controlled within ±0.02mm (2 microns).
[0003] However, existing technologies have significant limitations: early equipment used manual thread adjustment of the lifting platform height, which heavily relied on the operator's experience. The adjustment process was cumbersome and time-consuming, making it difficult to guarantee the height consistency of batch products. The traditional process accuracy was only 0.05mm~0.1mm, which could not reliably meet the micron-level precision requirements. In addition, although common lifting mechanisms on the market (such as lifting frames of household appliances, chain-driven screw lifting mechanisms, etc.) can achieve electric lifting, their design goal is macroscopic displacement, lacking the ability to adjust at the micron level, which also makes it difficult to meet the high-precision positioning requirements. At the same time, since different batches of screw raw materials will have slight overall dimensional deviations (usually within 1 mm) after stamping, each time the processing batch is changed, the lifting platform needs to be quickly and accurately fine-tuned to compensate for the deviation. Traditional methods are difficult to cope with this high-frequency precision adjustment requirement.
[0004] In addressing the ultra-precision machining needs of micro-hole fasteners in the aerospace field, there is an urgent need to develop a lifting platform solution that can achieve automated, efficient, and high-precision (micrometer-level) fine-tuning to effectively solve the core positioning problem in precision drilling. Summary of the Invention
[0005] To better enable CNC precision machining, this utility model provides a CNC precision lifting platform based on a slanted slider mechanism.
[0006] This utility model provides a CNC precision lifting platform based on a slanted slider mechanism, comprising: Base; The worktable is movably connected to the base via a vertical guide mechanism; The first linear slide rail is fixedly mounted on the base; A slanted slider having an inclined top surface and a horizontal bottom surface, wherein the bottom surface of the slanted slider is slidably connected to a first linear guide rail; A second linear guide rail is fixedly mounted on the worktable, wherein the second linear guide rail has the same inclination angle as the top surface of the inclined slider, and the second linear guide rail is slidably connected to the top surface of the inclined slider; and A drive mechanism for driving the inclined slider to slide along the first linear guide rail.
[0007] In this invention, the inclined slider is driven by a drive mechanism to move, thereby raising and lowering the inclined slider and automatically completing the lifting process. This replaces the cumbersome and inefficient manual operation and enables rapid, one-click height compensation adjustment for different batches of workpieces, greatly improving production efficiency and product consistency, and increasing single-piece processing efficiency by more than 64%. By using the inclined slider mechanism to reduce the conversion ratio of horizontal linear motion displacement to vertical linear motion displacement, the lifting platform can easily achieve a repeatability positioning accuracy of less than 0.02mm. Attached Figure Description
[0008] Figure 1 This is a three-dimensional structural diagram of a CNC precision lifting platform based on a slanted slider mechanism in one embodiment of the present invention.
[0009] Figure 2 This is a front view of a CNC precision lifting platform based on a slanted slider mechanism in one embodiment of the present invention.
[0010] Figure 3 This is a side view of a CNC precision lifting platform based on a slanted slider mechanism in one embodiment of the present invention.
[0011] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure along line BB.
[0012] Figure 5 This is a three-dimensional structural diagram of the inclined slider in one embodiment of the present invention.
[0013] Figure 6 This is a cross-sectional structural diagram of the inclined slider in one embodiment of the present invention.
[0014] Figure 7 This is a side view of the inclined slider in another embodiment of the present invention.
[0015] Figure 8 This is a schematic diagram of the structure for adjusting the tilt angle of the top surface using a slanted slider in another embodiment of the present invention.
[0016] In the attached drawings, reference numerals indicate the following: 1 represents the base, 101 represents the mounting part, 102 represents the support part, 2 represents the worktable, 201 represents the mounting part, 202 represents the mounting hole, 3 represents the guide mechanism, 301 represents the guide sleeve mounting seat, 302 represents the guide sleeve, 303 represents the guide post, 304 represents the guide post mounting seat, 4 represents the first linear slide rail, 5 represents the inclined slide block, 501 represents the ball screw mounting hole, 502 represents the rotating shaft, 503 represents the upper half of the inclined slide block, 504 represents the lower half of the inclined slide block, 505 represents the arc plate, 506 represents the first locking hole, 507 represents the second locking hole, 508 represents the locking pin, 6 represents the second linear slide rail, 7 represents the drive mechanism, 701 represents the motor, 702 represents the coupling, 703 represents the ball screw, and 704 represents the nut seat. Detailed Implementation
[0017] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] To improve the machining accuracy of CNC machine tools, this utility model provides a CNC precision lifting table based on a slanted slider mechanism, such as... Figures 1-4 As shown, it includes: Base 1; The worktable 2 is movably connected to the base 1 via a vertical guide mechanism 3; The first linear slide rail 4 is fixedly mounted on the base 1; An inclined slider 5 has an inclined top surface and a horizontal bottom surface, wherein the bottom surface of the inclined slider 5 is slidably connected to the first linear slide rail 4; A second linear slide rail 6 is fixedly mounted on the worktable 2, wherein the second linear slide rail 6 has the same inclination angle as the top surface of the inclined slider 5, and the second linear slide rail 6 is slidably connected to the top surface of the inclined slider 5; and Drive mechanism 7 for driving the inclined slider 5 to slide along the first linear guide rail 4.
[0019] Because the inclined slider 5 has an inclined top surface and a horizontal bottom surface, and the bottom surface of the inclined slider 5 is slidably connected to the first linear slide rail 4, and the top surface of the inclined slider 5 is slidably connected to the second linear slide rail 6, when the drive mechanism 7 drives the inclined slider 5 to slide along the first linear slide rail 4, the top surface of the inclined slider 5 forces the worktable 2 to move along the direction of the guide mechanism 3 through the second linear slide rail 6. Heightening sliders (without changing the inclination angle of the top surface of the inclined slider 5 or the horizontality of the bottom surface of the inclined slider 5) can be set between the top surface of the inclined slider 5 and the second linear slide rail 6, and between the bottom surface of the inclined slider 5 and the first linear slide rail 4, to facilitate matching with standard linear slide rails or to compensate for height differences. The two linear slide rails cooperate with the inclined slider 5 to ensure dynamic stability. There is a trigonometric function relationship between the horizontal linear displacement of the inclined slider 5 (denoted as x) and the vertical linear displacement of the worktable 2 (y), i.e., y = x * tan(θ), where θ represents the inclination angle of the top surface of the inclined slider 5. Thus, the x and y ratios can be adjusted by changing the tilt angle of the top surface of the inclined slider 5, thereby controlling the precision of the vertical linear displacement of the worktable 2.
[0020] In one embodiment, the top surface of the inclined slider 5 has a fixed tilt angle. Specifically, as shown... Figure 5 and Figure 6 As shown, the tilt angle of the top surface of the inclined slider 5 is less than or equal to 30°. Preferably, the tilt angle of the top surface of the inclined slider 5 is 10°-20°. Most preferably, the tilt angle of the top surface of the inclined slider 5 is 15°.
[0021] When θ=15°, since tan(15°)≈0.2679, the vertical linear displacement of the worktable 2 is reduced to 0.2679 times the horizontal linear displacement of the inclined slider 5, which can greatly improve the lifting accuracy of the worktable 2.
[0022] In one embodiment, the top surface of the inclined slider 5 has an adjustable tilt angle. Specifically, as shown... Figure 7 and Figure 8 As shown, the inclined slider 5 includes an upper part 503 and a lower part 504. The upper part 503 of the inclined slider 5 has an inclined top surface, and the lower part 504 of the inclined slider 5 has a horizontal bottom surface. One end of the upper part 503 of the inclined slider 5 is connected to one end of the lower part 504 of the inclined slider 5 through a rotating shaft 502, and the other end of the upper part 503 of the inclined slider 5 is connected to the other end of the lower part 504 of the inclined slider 5 through an angle adjustment component.
[0023] The angle adjustment component allows the upper half 503 of the inclined slider 5 to rotate relative to the lower half 504 of the inclined slider 5, thereby adjusting the tilt angle of the top surface of the inclined slider 5.
[0024] In one embodiment, the angle adjustment assembly includes an arc plate 505 and a locking pin 508. The arc plate 505 is fixedly disposed on the upper half 503 of the inclined slider 5 with the pivot 502 as the center. The arc plate 505 is provided with one or more first locking holes 506. The lower half 504 of the inclined slider 5 is provided with one or more second locking holes 507 corresponding to the first locking holes 506. The locking pin 508 can be inserted into the first locking holes 506 and the second locking holes 507.
[0025] The tilt angle of the top surface of the inclined slider 5 can be adjusted by controlling the rotation of the upper half 503 of the inclined slider 5 relative to the lower half 504 of the inclined slider 5 and inserting the locking pin 508 into the locking hole. In order to stably cooperate with the top surface of the inclined slider 5 with the adjustable tilt angle, the worktable 2 can also be divided into an upper half and a lower half, and a corresponding tilt angle adjustment component can be set. The tilt angle adjustment component has the same principle and similar structure (opposite direction), so that the tilt angle of the second linear slide rail 6 can be adjusted. This will not be described in detail here.
[0026] In one embodiment, the guide mechanism 3 includes a guide sleeve mounting base 301, a guide sleeve 302, a guide post 303, and a guide post mounting base 304. The guide sleeve 302 is mounted on the base 1 via the guide sleeve mounting base 301, and the guide post 303 is mounted on the worktable 2 via the guide post mounting base 304. The guide post 303 is inserted into the guide sleeve 302.
[0027] Understandably, there can be multiple guide mechanisms 3 to ensure smooth lifting and lowering of the worktable 2. For example, there may be four guide mechanisms 3, distributed on the outside of the inclined slider 5. High-rigidity guide pillars and sleeves ensure smooth lifting and lowering without wobbling, guaranteeing dynamic stability during processing.
[0028] In one embodiment, the drive mechanism 7 includes a motor 701, a coupling 702, a ball screw 703, and a nut seat 704. One end of the ball screw 703 is connected to the output shaft of the motor 701 through the coupling 702. The nut seat 704 is sleeved on the ball screw 703 and is fixedly connected to the inclined slider 5.
[0029] When motor 701 rotates, it drives ball screw 703 to rotate via coupling 702. The rotation of ball screw 703 causes nut seat 704 to move along the axial direction of ball screw 703, thereby driving the slant slider 5 to move along the first linear guide rail 4. Motor 701 can be a servo motor or a stepper motor, such as a stepper motor with a step angle of 1.8°. Ball screw 703 can be a standard ball screw with a 4mm pitch. Taking a stepper motor with a step angle of 1.8° driving a ball screw with a 4mm pitch as an example, the horizontal movement accuracy controlled by a single pulse is 4mm / 200 = 0.02mm; after conversion by the slant slider (θ=15°), the theoretical minimum vertical control accuracy is 0.02mm * tan(15°) ≈ 0.005358mm, which is much higher than the ±0.02mm requirement for military products. The ingenious combination of standard components such as motors, ball screws, and linear guides with inclined sliders avoids reliance on expensive special components such as ultra-high precision and small pitch components, thus significantly reducing manufacturing costs.
[0030] In one embodiment, the inclined slider 5 includes a ball screw mounting hole 501 for mounting a ball screw 703. A nut seat 704 is fixedly disposed within the ball screw mounting hole 501, and the ball screw 703 passes through the ball screw mounting hole 501 and engages with the nut seat 704.
[0031] In one embodiment, the base 1 includes a mounting portion 101 and a support portion 102. The mounting portion 101 of the base 1 can be used to mount the base 1 onto a CNC machine tool. The support portion 102 of the base 1 can be used to support components such as the guide mechanism 3 and the first linear guide rail 4.
[0032] In one embodiment, the worktable 2 includes a mounting portion 201 and mounting holes 202. The mounting portion 201 of the worktable 2 can be used to mount components such as the second linear guide rail 6 and the guide mechanism 3, and can support molds, workpieces, etc. on its top. The mounting holes 202 of the worktable 2 can be used to mount molds, workpieces, fixtures, robots, etc.
[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A CNC precision lifting platform based on a slanted slider mechanism, characterized in that, include: Base; The worktable is movably connected to the base via a vertical guide mechanism; The first linear slide rail is fixedly mounted on the base; A slanted slider having an inclined top surface and a horizontal bottom surface, wherein the bottom surface of the slanted slider is slidably connected to a first linear guide rail; A second linear guide rail is fixedly mounted on the worktable, wherein the second linear guide rail has the same inclination angle as the top surface of the inclined slider, and the second linear guide rail is slidably connected to the top surface of the inclined slider; and A drive mechanism for driving the inclined slider to slide along the first linear guide rail; The inclined slider has an adjustable tilt angle on its top surface and includes an upper part and a lower part. The upper part of the inclined slider has an inclined top surface, and the lower part of the inclined slider has a horizontal bottom surface. One end of the upper part of the inclined slider is connected to one end of the lower part of the inclined slider through a pivot, and the other end of the upper part of the inclined slider is connected to the other end of the lower part of the inclined slider through an angle adjustment component.
2. The CNC precision lifting platform based on the inclined slider mechanism according to claim 1, characterized in that, The angle adjustment assembly includes an arc plate and a locking pin. The arc plate is fixedly mounted on the upper half of the inclined slider with the pivot as the center. The arc plate is provided with one or more first locking holes. The lower half of the inclined slider is provided with one or more second locking holes corresponding to the first locking holes. The locking pin can be inserted into the first locking holes and the second locking holes.
3. The CNC precision lifting platform based on the inclined slider mechanism according to any one of claims 1-2, characterized in that, The guiding mechanism includes a guide sleeve mounting base, a guide sleeve, a guide post, and a guide post mounting base. The guide sleeve is mounted on the base via the guide sleeve mounting base, and the guide post is mounted on the worktable via the guide post mounting base. The guide post is inserted into the guide sleeve.
4. The CNC precision lifting platform based on the inclined slider mechanism according to claim 3, characterized in that, The drive mechanism includes a motor, a coupling, a ball screw, and a nut seat. One end of the ball screw is connected to the output shaft of the motor through the coupling. The nut seat is fitted onto the ball screw and is fixedly connected to the inclined slider.
5. The CNC precision lifting platform based on the inclined slider mechanism according to claim 4, characterized in that, The inclined slider includes a ball screw mounting hole for mounting a ball screw.
6. The CNC precision lifting platform based on the inclined slider mechanism according to claim 5, characterized in that, The base includes a mounting section and a support section.
7. The CNC precision lifting platform based on the inclined slider mechanism according to claim 6, characterized in that, The workbench includes a mounting section and mounting holes.