Lifting device based on wedge-shaped motion
Through the combination of wedge-shaped moving structure and cross ball guide rails, the problem of motor driving heating affecting system accuracy is solved, the motor torque and power are reduced, the system accuracy and dynamic performance are improved, and it is suitable for miniaturized lifting devices.
Patent Information
- Application Number
- CN202422378119.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The existing vertical motion structures have thermal deformation caused by motor driving heating on high-precision motion platforms that affect system accuracy and performance, and the configuration of high-power motors increases the structural volume, making it difficult to miniaturize.
Using a lifting device based on wedge motion, the cross ball guide rail and grating scale reading head is used to convert horizontal force into vertical force through the wedge body, reducing the torque and power requirements of the motor, and combining the cross roller guide rail to improve the system rigidity.
Under the same load situation, the motor torque and power requirements are reduced, the heating is reduced, the system accuracy and dynamic performance are improved, and the structure is miniaturized.
Smart Images
Figure CN223134023U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of lifting devices, in particular to a lifting device based on wedge movement. Background Art
[0002] Currently, on some motion platforms with high requirements for speed and precision performance, thermal deformation caused by motor drive heating is an important reason affecting the overall system precision and motion performance.
[0003] The existing vertical motion structure conventionally uses a ball screw drive method. Overall, in vertical motion, it is necessary to overcome the influence of the self-weight of components such as the workbench and products. Therefore, motors usually need to be configured with relatively large power, or a speed reducer is added to increase the driving torque and reduce the operating speed. On the one hand, a larger motor power will increase the influence of motor heating on the precision of the motion system. On the other hand, a larger power will also increase the overall volume of the drive structure, making it difficult to miniaturize the overall structure. Summary of the Utility Model
[0004] The main purpose of the utility model is to provide a lifting device based on wedge movement, which can effectively solve the technical problem that in the background art, the traditional lifting device needs to overcome the influence of the self-weight of components such as the workbench and products in vertical motion. Therefore, motors usually need to be configured with relatively large power, or a speed reducer is added to increase the driving torque and reduce the operating speed.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] A lifting device based on wedge movement includes a base assembly, a lifting assembly, and a wedge assembly. The base assembly includes a base body. On both sides of the upper part of the base body, two vertical plates are symmetrically and fixedly installed. On the opposite surfaces of the two vertical plates, vertical cross-roller guides are slidably connected. On the upper part of the base body, horizontal cross-roller guides are slidably connected near the four corners. At the front position of the upper part of the base body, a linear motor mover is fixedly installed, and at the rear position of the upper part of the base body, a first grating scale reading head is fixedly installed. On one side of one of the vertical plates, a second grating scale reading head is fixedly installed.
[0007] As a further solution of the utility model, the lifting assembly includes a lifting workbench. On both sides of the lifting workbench, side plates are fixedly installed. On one side of one of the side plates, a first grating scale is fixedly installed. At the four corner positions of the bottom of the lifting workbench, slope cross-roller guides are slidably installed.
[0008] As a further solution of the present utility model, the wedge-shaped component includes a wedge body. A linear motor stator is fixedly installed at the front position of the bottom of the wedge body. A limiting block is fixedly installed at the position on one side of the linear motor stator at the bottom of the wedge body. A second grating scale is fixedly installed at the rear position of the bottom of the wedge body.
[0009] As a further solution of the present utility model, the two side plates are respectively connected to the two vertical plane crossed roller guides by bolts, and the first grating scale is adapted to the reading head of the second grating scale.
[0010] As a further solution of the present utility model, four wedge blocks are integrally connected to both sides of the wedge body. The bottoms of the four wedge blocks are respectively fixedly connected to the four horizontal plane crossed roller guides, and the tops of the four wedge blocks are respectively fixedly connected to the four slope crossed roller guides.
[0011] As a further solution of the present utility model, the reading head of the first grating scale is adapted to the second grating scale.
[0012] The beneficial effects of the present utility model are as follows:
[0013] Compared with the conventional vertical motion structure, for the same load, the requirements for the torque and power of the motor are reduced to a certain extent. By reducing the heat generated by the motor power, the overall accuracy of the system is indirectly improved.
[0014] On the other hand, the wedge mechanism of this technology adopts crossed roller guides. Compared with the traditional vertical guiding structure using linear guides or linear bearings, the rigidity of the system is improved, and the dynamic performance of the structure is better. Description of the Drawings
[0015] Figure 1 It is a schematic diagram of the overall structure of a lifting device based on wedge motion of the present utility model;
[0016] Figure 2 It is an exploded view of a lifting device based on wedge motion of the present utility model;
[0017] Figure 3 It is a bottom structure diagram of the lifting component of a lifting device based on wedge motion of the present utility model;
[0018] Figure 4 It is a bottom structure diagram of the wedge-shaped component of a lifting device based on wedge motion of the present utility model.
[0019] In the figure: 1. Base component; 2. Lifting component; 3. Wedge component; 4. Vertical plate; 5. Crossed roller guide for vertical plane; 6. Crossed roller guide for horizontal plane; 7. Linear motor mover; 8. First grating scale reading head; 9. Second grating scale reading head; 10. Side plate; 11. First grating scale; 12. Crossed roller guide for inclined plane; 13. Linear motor stator; 14. Limit block; 15. Second grating scale. Detailed implementation mode
[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with the detailed implementation mode.
[0021] As Figures 1-4 shown, a lifting device based on wedge movement includes a base component 1, a lifting component 2 and a wedge component 3. The base component 1 includes a base body. Two vertical plates 4 are symmetrically and fixedly installed on both sides of the upper part of the base body. Crossed roller guides 5 for the vertical plane are slidably connected to the opposite surfaces of the two vertical plates 4. Crossed roller guides 6 for the horizontal plane are slidably connected to the positions near the four corners of the upper part of the base body. A linear motor mover 7 is fixedly installed at the front position of the upper part of the base body, and a first grating scale reading head 8 is fixedly installed at the rear position of the upper part of the base body. A second grating scale reading head 9 is fixedly installed on one side of one of the vertical plates 4.
[0022] In this embodiment, the lifting component 2 includes a lifting workbench. Side plates 10 are fixedly installed on both sides of the lifting workbench. A first grating scale 11 is fixedly installed on one side of one of the side plates 10. Crossed roller guides 12 for the inclined plane are slidably installed at the four corner positions of the bottom of the lifting workbench;
[0023] The lifting workbench is used to cooperate with the wedge component 3 to realize the lifting function.
[0024] In this embodiment, the wedge component 3 includes a wedge body. A linear motor stator 13 is fixedly installed at the front position of the bottom of the wedge body. A limit block 14 is fixedly installed at a position on one side of the linear motor stator 13 at the bottom of the wedge body. A second grating scale 15 is fixedly installed at the rear position of the bottom of the wedge body;
[0025] The wedge body is located between the base component 1 and the lifting component 2, and is used to convert the horizontal force into a vertical force to provide the lifting component 2 to rise or fall.
[0026] In this embodiment, the two side plates 10 are respectively connected to the two crossed roller guides 5 for the vertical plane by bolts, and the first grating scale 11 is adapted to the second grating scale reading head 9;
[0027] After the two side plates 10 are connected to the two vertical crossed roller guides 5, they can move in the vertical direction through the two vertical crossed roller guides 5. The first grating scale 11 cooperates with the second grating scale reading head 9, which can be used to measure the movement of the lifting assembly 2 in the vertical direction.
[0028] In this embodiment, four wedge blocks are integrally connected to both sides of the wedge body. The bottoms of the four wedge blocks are respectively fixedly connected to the four horizontal crossed roller guides 6, and the tops of the four wedge blocks are respectively fixedly connected to the four slope crossed roller guides 12.
[0029] The cooperation of the four wedge blocks with the horizontal crossed roller guides 6 realizes horizontal sliding, and the cooperation with the slope crossed roller guides 12 realizes the vertical movement of the lifting assembly 2.
[0030] In this embodiment, the first grating scale reading head 8 is adapted to the second grating scale 15.
[0031] The first grating scale reading head 8 cooperates with the second grating scale 15 to measure the horizontal displacement of the wedge-shaped assembly.
[0032] It should be noted that the present utility model is a lifting device based on wedge-shaped movement. When in use, when the linear motor drives the wedge-shaped assembly 3 to perform a horizontal linear movement, the slope on the upper side of the wedge body will also move synchronously. The movement of this slope relative to the lifting assembly 2 can decompose the movement orthogonally, and decompose the movement displacement into a combination of vertical and horizontal displacements. Taking the base group 1 as the movement reference system, since the lifting assembly 2 and the base assembly 1 are constrained by the vertical crossed roller guides 5, it can only perform vertical displacement, and the horizontal displacement generated by the movement of the slope is completed by the wedge-shaped assembly 3.
[0033] Compared with the lifting structure directly driven by the motor, when the motor makes the same displacement, the displacement of the lifting platform of this invention is much smaller than that of the directly driven platform. Since this structure will reduce the movement displacement in the vertical direction relative to the original output displacement of the motor, relative to the step distance output by the motor, the movement platform can further provide a smaller displacement accuracy.
[0034] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.
Claims
1. A lifting device based on wedge-shaped movement, comprising a base assembly (1), a lifting assembly (2) and a wedge-shaped assembly (3), characterized in that: The base assembly (1) includes a base body. On both sides of the upper part of the base body, two vertical plates (4) are symmetrically and fixedly installed. On the opposite surfaces of the two vertical plates (4), vertical cross-roller guides (5) are slidably connected. At the positions near the four corners of the upper part of the base body, horizontal cross-roller guides (6) are slidably connected. At the front position of the upper part of the base body, a linear motor mover (7) is fixedly installed, and at the rear position of the upper part of the base body, a first grating scale reading head (8) is fixedly installed. On one side of one of the vertical plates (4), a second grating scale reading head (9) is fixedly installed.
2. The lifting device based on wedge motion according to claim 1, wherein: The lifting assembly (2) includes a lifting workbench. On both sides of the lifting workbench, side plates (10) are fixedly installed. On one side of one of the side plates (10), a first grating scale (11) is fixedly installed. At the four corner positions of the bottom of the lifting workbench, slope cross-roller guides (12) are slidably installed.
3. The lifting device based on wedge motion according to claim 2, characterized in that: The wedge-shaped assembly (3) includes a wedge body. At the front position of the bottom of the wedge body, a linear motor stator (13) is fixedly installed. At the position on one side of the linear motor stator (13) at the bottom of the wedge body, a limit block (14) is fixedly installed. At the rear position of the bottom of the wedge body, a second grating scale (15) is fixedly installed.
4. The lifting device based on wedge motion according to claim 2, wherein: The two side plates (10) are respectively bolted to the two vertical cross-roller guides (5). The first grating scale (11) is adapted to the second grating scale reading head (9).
5. The lifting device based on wedge movement according to claim 3, wherein: Four wedge blocks are integrally connected to both sides of the wedge body. The bottoms of the four wedge blocks are respectively fixedly connected to the four horizontal cross-roller guides (6), and the tops of the four wedge blocks are respectively fixedly connected to the four slope cross-roller guides (12).
6. The lifting device based on wedge movement according to claim 3, characterized in that: The first grating scale reading head (8) is adapted to the second grating scale (15).