Repeated positioning high-precision grating ruler structure
By introducing magnetic adsorption and a ball origin design into the grating ruler structure, the problems of insufficient accuracy and resolution of traditional grating rulers are solved, achieving efficient and stable repeatable positioning, meeting the high-precision measurement requirements of high speed and accuracy, ensuring that the trolley moves smoothly on the grating glass, and realizing high-precision repeatable positioning.
Patent Information
- Application Number
- CN202520036032.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-08
AI Technical Summary
Traditional grating rulers have low precision and resolution efficiency, which cannot meet the requirements of precision machining and inspection, and their stability is also poor.
The device uses a profile assembly with components such as a limiting groove, dustproof strip, steel belt, grating glass, reading head, magnet, and ball. It utilizes the principle of magnetic adsorption to ensure that the trolley moves smoothly on the grating glass. Combined with the principle that the ball is the origin at any position, it achieves high-precision repeatable positioning.
By using magnetic adsorption and the design of the ball's origin, the trolley is ensured to move smoothly on the grating glass, avoiding precision errors, achieving high repeatability positioning accuracy, and meeting the precision detection requirements of high-speed movement.
Smart Images
Figure CN223649875U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grating ruler measurement technology, and in particular to a high-precision grating ruler structure with repeatable positioning. Background Technology
[0002] An optical grating ruler is a high-precision position measuring device based on optical principles. Through the cooperation of grating fringes and a reading head, it can achieve positioning measurements with nanometer-level or even higher precision.
[0003] Traditional mechanical or electrical measurement methods are inefficient in improving the accuracy and resolution of grating rulers and cannot meet the requirements of precision machining and inspection, resulting in poor stability and accuracy of grating rulers. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision grating ruler structure for repeated positioning.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision grating ruler structure with repeatable positioning, comprising a profile device, a limiting groove inside the profile device, a dustproof strip inside the profile device, a steel strip inside the profile device, a grating glass fixedly connected to the bottom of the profile device, a reading head movably connected inside the profile device, a body at the bottom of the reading head, a magnet on one side of the body, a ball movably connected to one side of the magnet, a trolley on one side of the ball, a bearing fixedly connected to one side of the trolley, a secondary ruler inside the trolley, and a limiting magnet inside the profile device.
[0006] As a further description of the above technical solution: two limiting magnets are installed on the left and right sides inside the profile device.
[0007] As a further description of the above technical solution: the profile device is equipped with a selectable zero-position magnet.
[0008] As a further description of the above technical solution: the dustproof strip is provided in two sets, and each set of the dustproof strip is distributed on both sides of the profile device.
[0009] As a further description of the above technical solution: the steel strip is provided in two groups, and the two groups of steel strips are distributed at a 90-degree angle.
[0010] As a further description of the above technical solution: the bearing is provided in five sets, two sets of the bearing are movable on the side of the grating glass, and three sets of the bearing are movable on the front of the grating glass.
[0011] As a further description of the above technical solution: the magnets are distributed on the bottom and sides of the trolley and placed at a 90-degree angle.
[0012] This utility model has the following beneficial effects:
[0013] 1. In this utility model, based on the principle of magnetic force, steel strips are provided on the plane and side of the profile device, and magnets are provided on the plane and side of the trolley. During the movement, the magnets of the trolley and the steel strips of the profile device exhibit magnetic attraction and the two surfaces do not rub against each other. During the movement, the trolley moves smoothly on the grating glass, preventing the influence of external forces from causing large precision errors.
[0014] 2. In this utility model, the origin is any position of the ball. A magnet is set on one side of the main body and a magnet is set on one side of the trolley. The ball is set between the two magnets. The principle that the origin is any position of the ball ensures high positioning accuracy during high-speed movement. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a high-precision grating ruler for repeatable positioning proposed in this utility model. Figure 1 ;
[0016] Figure 2 This is a schematic diagram of the structure of a high-precision grating ruler for repeatable positioning proposed in this utility model. Figure 2 ;
[0017] Figure 3 This is a schematic diagram of the structure of a high-precision grating ruler for repeatable positioning proposed in this utility model. Figure 3 .
[0018] Legend:
[0019] 1. Profile assembly; 2. Limiting groove; 3. Dustproof strip; 4. Steel strip; 5. Grating glass; 6. Reading head; 7. Body; 8. Magnet; 9. Ball; 10. Pulley; 11. Bearing; 12. Vernier scale; 13. Limiting magnet; 14. Optional zero-position magnet. 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. 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 protection scope of the present utility model.
[0021] Reference Figures 1-3This utility model provides an embodiment of a high-precision repeatable positioning grating ruler structure, comprising a profile device 1, a limit groove 2 inside the profile device 1, a dustproof strip 3 inside the profile device 1, a steel strip 4 inside the profile device 1, a grating glass 5 fixedly connected to the bottom of the profile device 1, a reading head 6 movably connected inside the profile device 1, a body 7 at the bottom of the reading head 6, a magnet 8 on one side of the body 7, a ball 9 movably connected to one side of the magnet 8, a trolley 10 on one side of the ball 9, a bearing 11 fixedly connected to one side of the trolley 10, a secondary ruler 12 inside the trolley 10, and a limit magnet inside the profile device 1. Iron 13, through the magnetic principle of magnet 8, steel strips 4 are set on the plane and side of the profile device 1, and magnets 8 are set on the plane and side of the trolley. During the movement, the magnets 8 of the trolley and the steel strips 4 of the profile device 1 are magnetically attracted and the two surfaces do not rub against each other. During the movement, it ensures that the trolley moves smoothly on the grating glass 5 and prevents the influence of external forces, which would lead to large accuracy errors. Any position through the ball 9 is the origin. Magnets 8 are set on one side of the body 7 and one side of the trolley. A ball 9 is set between the two magnets 8. The principle that any position through the ball 9 is the origin ensures high positioning accuracy during high-speed movement.
[0022] Inside the profile device 1, there are two limiting magnets 13 installed on the left and right sides. Inside the profile device 1, there is a selectable zero-position magnet 14. There are two sets of dustproof strips 3, each set of dustproof strips 3 is distributed on both sides of the profile device 1. There are two sets of steel strips 4, which are distributed at a 90-degree angle. There are five sets of bearings 11, two sets of bearings 11 are movable on the side of the grating glass 5, and three sets of bearings 11 are movable on the front of the grating glass 5. Magnets 8 are distributed on the bottom and side of the trolley 10 and are placed at a 90-degree angle.
[0023] Working principle: During use, steel strips 4 are respectively set on the plane and side of the profile device 1, while magnets 8 are set on the plane and side of the trolley 10. When the trolley 10 moves inside the profile device 1, the magnets 8 and steel strips 4 generate magnetic attraction, which allows the trolley 10 to move smoothly on the grating glass 5. This ensures that the trolley 10 is not affected by external forces during movement, thereby avoiding an increase in accuracy error. The reading head 6 determines the position of the trolley 10 by detecting the scale information on the grating glass 5. Due to the smooth movement of the trolley 10 and the magnetic attraction, the reading head 6 can accurately read the position information. In addition, the trolley 10 is connected to the body 7 by magnets 8 and ball 9. Utilizing the principle that "any position of the ball is the origin", it is ensured that the trolley 10 can maintain high repeatability positioning accuracy during high-speed movement. At the same time, a limit magnet 13 is set inside the profile device 1 to limit the movement range of the trolley 10. In addition, a selectable zero magnet 14 is also set inside the profile device 1 to set the initial position of the trolley 10.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high-precision grating ruler structure for repeatable positioning, comprising a profile device (1), characterized in that: The profile device (1) is provided with a limiting groove (2) inside, a dustproof strip (3) inside, a steel strip (4) inside, a grating glass (5) fixedly connected to the bottom of the profile device (1), a reading head (6) movably connected inside, a body (7) at the bottom of the reading head (6), a magnet (8) on one side of the body (7), a ball (9) movably connected to one side of the magnet (8), a trolley (10) on one side of the ball (9), a bearing (11) fixedly connected to one side of the trolley (10), a vernier scale (12) inside the trolley (10), and a limiting magnet (13) inside the profile device (1).
2. The repeatable positioning high-precision grating ruler structure according to claim 1, characterized in that: The profile device (1) has two limiting magnets (13) installed on the left and right sides inside.
3. The repeatable positioning high-precision grating ruler structure according to claim 2, characterized in that: The profile device (1) is equipped with a selectable zero-position magnet (14).
4. The repeatable positioning high-precision grating ruler structure according to claim 3, characterized in that: The dustproof strip (3) is provided in two sets, with each set of the dustproof strip (3) distributed on both sides of the profile device (1).
5. The repeatable positioning high-precision grating ruler structure according to claim 4, characterized in that: The steel strip (4) is provided in two groups, and the two groups of steel strips (4) are distributed at a 90-degree angle.
6. The repeatable positioning high-precision grating ruler structure according to claim 5, characterized in that: The bearing (11) is provided in five sets, with two sets of the bearing (11) moving on the side of the grating glass (5) and three sets of the bearing (11) moving on the front of the grating glass (5).
7. The repeatable positioning high-precision grating ruler structure according to claim 6, characterized in that: The magnets (8) are distributed on the bottom and sides of the trolley (10) and placed at a 90-degree angle.