Guide pair integrated with displacement detection function

Abstract

The utility model provides a guide rail pair of integrated displacement detection function, including track and the slide block of slidable setting on the track along front -back direction, the upper surface fixed setting of track has the magnetic scale along its length direction extension, the front end fixed setting of slide block has fixed block, the bottom surface of fixed block is parallel to the upper surface of track and is fixed with hall induction magnetic head, hall induction magnetic head is towards the magnetic scale and with the magnetic scale mutual magnetic induction, hall induction magnetic head passes through the cable and the controller electricity of outside connection. The utility model discloses compact structure, convenient to install and integrated measurement function.

Description

Technical Field

[0001] This utility model relates to the field of guide rail technology, and more specifically, to a guide rail pair with integrated displacement detection function. Background Technology

[0002] In the field of mechanical transmission and precision control, linear guide pairs, as basic motion components, are usually composed of sliders and guide rails. Linear motion and load transmission are achieved through the cooperation of the guide rail raceway and the rolling elements inside the slider. With the increasing requirements for motion accuracy in industrial automation, mechanical systems often need to monitor and control the movement distance of the slider in real time. Therefore, existing technologies often adopt a solution that combines guide pairs with external measurement systems.

[0003] However, this non-integrated design has significant limitations in practical applications: the separate layout of the measurement system and the guide rail results in a loose overall structure and excessive space occupation. Especially in small machine tools or equipment with compact layouts, it is difficult to find a suitable installation location for the additional measurement module. This not only increases the complexity of equipment assembly, but may also force the abandonment of measurement functions due to space constraints. As a result, the guide rail cannot meet the usage requirements in scenarios that require precise stroke control. In addition, the separate structure also makes the system reliability susceptible to external connecting components, increases maintenance costs, and ultimately affects the product's competitiveness and user satisfaction in the precision machining equipment market. Utility Model Content

[0004] The purpose of this invention is to overcome the defects in the prior art and provide a guide rail pair that is compact in structure, easy to install, and integrates measurement functions.

[0005] To solve the above problems, this utility model provides a guide rail pair with integrated displacement detection function, including a rail and a slider that is slidably disposed on the rail in the front-back direction. A magnetic scale extending along the length direction is fixedly disposed on the upper surface of the rail. A fixing block is fixedly disposed at the front end of the slider. The bottom surface of the fixing block is parallel to the upper surface of the rail and a Hall sensor head is fixed thereon. The Hall sensor head faces the magnetic scale and magnetically induction with the magnetic scale. The Hall sensor head is electrically connected to an external controller through a cable.

[0006] Compared with the prior art, the advantages of this utility model are as follows: By directly fixing the magnetic scale to the upper surface of the track and setting a fixing block arranged in front of and behind the slider at the end of the slider, the Hall sensor head is integrated into the bottom of the fixing block in a manner parallel to the upper surface of the track. This achieves an integrated design of displacement detection module and guide rail pair. This structure significantly reduces the installation space of traditional split measurement systems, and is especially suitable for small machine tools or space-constrained equipment, avoiding the problem of not being able to install the measurement module due to insufficient space. At the same time, the built-in layout of the magnetic scale and Hall sensor head reduces external connecting parts, which simplifies the installation process and reduces the risk of measurement errors caused by external vibration or loose connections. In addition, the rigid connection design of the fixing block and the slider further improves the stability of the sensor head. Combined with the wiring method of directly connecting the external controller to the cable, it effectively reduces signal transmission interference and ensures displacement detection accuracy and system reliability. The overall solution significantly improves the integration and applicability of the guide rail pair while ensuring functional integrity, meeting the diverse needs of high-precision stroke control scenarios.

[0007] Specifically, the bottom of the fixing block has a mounting cavity with an opening at the lower end, and the Hall sensor head is fixed inside the mounting cavity. In this structure, the design of the mounting cavity encloses the Hall sensor head inside the fixing block, which not only avoids direct damage to the head from external collisions or dust contamination, but also ensures a constant distance between the head and the magnetic scale through a fixed connection, reducing measurement errors caused by vibration or displacement. At the same time, the open structure facilitates precise alignment of the head and the magnetic scale and subsequent maintenance.

[0008] As an improvement, a pair of guide limiting parts are provided on both sides of the bottom of the fixed block, distributed along the front-back direction of the track on both sides. This technical solution, by setting a pair of guide limiting parts distributed along the track direction and covering both sides of the track on both sides of the bottom of the fixed block, provides effective lateral positioning constraints for the sliding of the fixed block on the track, significantly improving the guidance and stability of the sliding and suppressing lateral shaking. On the other hand, the guide limiting parts and the side of the track together form a maze-like non-contact protective structure, which can effectively prevent external debris, oil stains and other foreign objects from entering the critical sensing areas of the magnetic scale and Hall sensor head, reducing the risk of signal interference and component wear caused by contamination. At the same time, its non-contact design avoids additional frictional resistance, ensuring the long-term accuracy, reliability and motion efficiency of displacement detection.

[0009] As an improvement, the front end of the fixing block has an adjustment hole that connects to the mounting cavity. In this structure, the adjustment hole connects the mounting cavity to the outside. Before the circuit board is assembled, the chip program is initially checked through this hole to ensure that the Hall sensor head and control circuit are functioning normally at the beginning. After the circuit board is assembled, the secondary inspection can be completed through the adjustment hole without disassembly, ensuring the functional integrity before leaving the factory. In addition, during after-sales maintenance, fault diagnosis and parameter adjustment can be performed directly through the adjustment hole, avoiding component damage or structural loosening caused by disassembly, significantly improving product inspection efficiency and after-sales maintenance convenience.

[0010] As an improvement, the lower surface of the slider is recessed upwards to form a guide groove. The cross-section of the guide groove matches the upper contour of the track, allowing the slider to be fitted onto the track through the guide groove. The two sides of the track are recessed inwards to form a pair of limiting mounting grooves extending along their length. The two side walls of the guide grooves bulge towards the center to form a pair of limiting mounting parts corresponding to the limiting mounting grooves. The limiting mounting parts are embedded in the limiting mounting grooves and contact the sliding surface of the limiting mounting grooves, forming a sliding fit limiting structure. In this structure, the matching design of the guide groove and the track contour ensures the straightness of the slider's movement along the track, while the embedded sliding fit between the limiting mounting parts and the limiting mounting grooves further restricts the slider's horizontal offset, preventing slider wobbling or jamming due to lateral loads, improving motion stability and load-bearing capacity, while reducing wear on the sliding surface.

[0011] As an improvement, the upper surface of the track is provided with a trapezoidal groove extending along its length. The trapezoidal groove includes a first groove and a second groove arranged from bottom to top. The width of the second groove is greater than that of the first groove. The magnetic scale is embedded in the first groove, and a protective steel strip is embedded in the second groove. In this structure, the narrow groove of the first groove ensures that the magnetic scale is tightly embedded in the track surface, preventing it from shifting due to vibration or impact. The wider opening of the second groove accommodates the protective steel strip, which covers the surface of the magnetic scale, preventing contaminants such as cutting fluid and metal shavings from directly contacting the magnetic scale and extending its service life. At the same time, the stepped design of the trapezoidal groove facilitates the installation and replacement of the protective steel strip. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a perspective view of the present utility model;

[0014] Figure 3 This is a front view of the present invention;

[0015] Figure 4 This is a rear view of the present invention;

[0016] Figure 5 This is an exploded view of the fixing block in this utility model;

[0017] Figure 6 This is an exploded view of the track in this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Track; 11. Limiting mounting groove; 2. Slider; 21. Guide groove; 211. Limiting mounting part; 3. Magnetic scale; 4. Fixing block; 41. Mounting cavity; 42. Guide limiting part; 43. Debugging hole; 5. Hall effect magnetic head; 6. Trapezoidal groove; 61. First groove; 62. Second groove; 7. Protective steel strip. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, a guide rail pair with integrated displacement detection function includes a rail 1 and a slider 2 slidably disposed on the rail 1 in the front-back direction. A magnetic scale 3 extending along its length direction is fixedly disposed on the upper surface of the rail 1. A fixing block 4 is fixedly disposed at the front end of the slider 2. The bottom surface of the fixing block 4 is parallel to the upper surface of the rail 1 and a Hall sensor head 5 is fixed thereon. The Hall sensor head 5 faces the magnetic scale 3 and magnetically senses each other with the magnetic scale 3. The Hall sensor head 5 is electrically connected to an external controller through a cable.

[0022] This embodiment directly fixes the magnetic scale 3 to the upper surface of the track 1, and sets a fixing block 4 arranged in front of and behind the slider 2 at the end of the slider 2. The Hall sensor head 5 is integrated into the bottom of the fixing block 4 in a manner parallel to the upper surface of the track 1, realizing the integrated design of the displacement detection module and the guide rail pair. This structure greatly reduces the installation space of the traditional split measurement system, and is especially suitable for small machine tools or space-constrained equipment. It avoids the problem of not being able to install the measurement module due to insufficient space. At the same time, the built-in layout of the magnetic scale 3 and the Hall sensor head 5 reduces the number of external connecting parts, which simplifies the installation process and reduces the risk of measurement errors caused by external vibration or loose connections. In addition, the rigid connection design of the fixing block 4 and the slider 2 further improves the stability of the sensing head. Combined with the wiring method of directly connecting the cable to the controller, it effectively reduces signal transmission interference and ensures displacement detection accuracy and system reliability. The overall solution significantly improves the integration and applicability of the guide rail pair while ensuring functional integrity, and meets the diverse needs of high-precision stroke control scenarios.

[0023] like Figure 3 and Figure 5As shown, the bottom of the fixing block 4 has a mounting cavity 41 with an opening at the lower end, and the Hall sensor head 5 is fixed inside the mounting cavity 41. In this structure, the design of the mounting cavity 41 encloses the Hall sensor head 5 inside the fixing block 4, which not only avoids direct damage to the head from external collisions or dust contamination, but also ensures that the distance between the head and the magnetic scale 3 is constant through a fixed connection, reducing measurement errors caused by vibration or displacement. At the same time, the open structure facilitates the precise alignment of the head and the magnetic scale 3 and subsequent maintenance.

[0024] like Figure 3 and Figure 5 As shown, a pair of guide limiting parts 42 are provided on both sides of the bottom of the fixed block 4. The pair of guide limiting parts 42 are distributed on both sides of the track 1 along the front-back direction. This technical solution provides an effective lateral positioning constraint for the sliding of the fixed block 4 on the track 1 by setting a pair of guide limiting parts 42 distributed along the direction of the track 1 and covering both sides of the track 1 on both sides of the bottom of the fixed block 4. This significantly improves the guidance and stability of the sliding and suppresses lateral shaking. On the other hand, the guide limiting parts 42 and the side of the track 1 together form a non-contact protective structure similar to a "maze". This can effectively prevent external debris, oil stains and other foreign objects from entering the key sensing areas of the magnetic scale 3 and the Hall sensing head 5, reducing the risk of signal interference and component wear caused by contamination. At the same time, its non-contact design avoids additional frictional resistance and ensures the long-term accuracy, reliability and motion efficiency of displacement detection.

[0025] like Figure 5 As shown, the front end of the fixing block 4 has an adjustment hole 43 that connects to the mounting cavity 41. In this structure, the adjustment hole 43 is designed to connect the mounting cavity 41 to the outside. Before the circuit board is assembled, the chip program is initially checked through this hole to ensure that the Hall sensor head 5 and the control circuit are functioning normally initially. After the circuit board is assembled, the secondary inspection can be completed through the adjustment hole 43 without disassembly, ensuring the functional integrity before leaving the factory. In addition, during after-sales maintenance, fault diagnosis and parameter adjustment can be performed directly through the adjustment hole 43, avoiding component damage or structural loosening caused by disassembly, significantly improving product inspection efficiency and after-sales maintenance convenience.

[0026] like Figure 2 and Figure 4As shown, the lower surface of slider 2 is recessed upward to form a guide groove 21. The cross-section of the guide groove 21 matches the upper contour of the track 1, allowing slider 2 to be fitted onto track 1 through the guide groove 21. The two sides of track 1 are recessed inward to form a pair of limiting mounting grooves 11 extending along their length. The two side walls of the guide groove 21 protrude towards the center to form a pair of limiting mounting parts 211 corresponding to the limiting mounting grooves 11. The limiting mounting parts 211 are embedded in the limiting mounting grooves 11 and contact the sliding surface of the limiting mounting grooves 11, forming a sliding fit limiting structure. In this structure, the matching design of the guide groove 21 and the contour of track 1 ensures the straightness of slider 2's movement along track 1, while the embedded sliding fit of the limiting mounting parts 211 and the limiting mounting grooves 11 further restricts the horizontal offset of slider 2, preventing slider 2 from shaking or jamming due to lateral loads, improving motion stability and load-bearing capacity, while reducing wear on the sliding surface.

[0027] like Figure 6 As shown, the upper surface of the track 1 is provided with a trapezoidal groove 6 extending along its length. The trapezoidal groove 6 includes a first groove 61 and a second groove 62 arranged from bottom to top. The width of the second groove 62 is greater than the width of the first groove 61. The magnetic scale 3 is embedded in the first groove 61, and a protective steel strip 7 is embedded in the second groove 62. To enhance the connection strength, the magnetic scale 3 is usually fixed to the first groove 61 by adhesive, and the protective steel strip 7 is fixed to the second groove 62 by adhesive. In this structure, the narrow groove structure of the first groove 61 ensures that the magnetic scale 3 is tightly embedded in the surface of the track 1, preventing it from shifting due to vibration or impact. The second groove 62 accommodates the protective steel strip 7 through a wider opening. The steel strip covers the surface of the magnetic scale 3, preventing contaminants such as cutting fluid and metal shavings from directly contacting the magnetic scale 3, thus extending its service life. At the same time, the stepped design of the trapezoidal groove 6 facilitates the installation and replacement of the protective steel strip 7.

[0028] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A guide rail pair with integrated displacement detection function, comprising a rail (1) and a slider (2) slidably disposed on the rail (1) in the front-rear direction, characterized in that: A magnetic grating ruler (3) extending along its length is fixedly installed on the upper surface of the track (1). A fixing block (4) is fixedly installed at the front end of the slider (2). The bottom surface of the fixing block (4) is parallel to the upper surface of the track (1) and a Hall sensor head (5) is fixed thereon. The Hall sensor head (5) faces the magnetic grating ruler (3) and magnetically senses each other with the magnetic grating ruler (3). The Hall sensor head (5) is electrically connected to an external controller through a cable.

2. The guide rail pair with integrated displacement detection function according to claim 1, characterized in that: The bottom of the fixing block (4) is provided with a mounting cavity (41) with an opening at the lower end, and the Hall sensing magnetic head (5) is fixed in the mounting cavity (41).

3. The guide rail pair with integrated displacement detection function according to claim 2, characterized in that: The bottom sides of the fixed block (4) are provided with a pair of guide limiting parts (42), and the pair of guide limiting parts (42) are distributed on both sides of the track (1) along the front and back direction of the track (1).

4. The guide rail pair with integrated displacement detection function according to claim 2, characterized in that: The front end of the fixing block (4) is provided with an adjustment hole (43) that connects to the mounting cavity (41).

5. The guide rail pair with integrated displacement detection function according to claim 1, characterized in that: The lower surface of the slider (2) is recessed upward to form a guide groove (21). The cross-section of the guide groove (21) matches the upper contour of the track (1), so that the slider (2) is fitted onto the track (1) through the guide groove (21). The two sides of the track (1) are recessed inward to form a pair of limiting mounting grooves (11) extending along their length direction. The two sides of the guide groove (21) protrude towards the center to form a pair of limiting mounting parts (211) corresponding to the limiting mounting groove (11). The limiting mounting parts (211) are embedded in the limiting mounting groove (11) and contact the sliding surface of the limiting mounting groove (11) to form a sliding fit limiting structure.

6. The guide rail pair with integrated displacement detection function according to claim 1, characterized in that: The upper surface of the track (1) is provided with a trapezoidal groove (6) extending along its length direction. The trapezoidal groove (6) includes a first groove (61) and a second groove (62) arranged from bottom to top. The width of the second groove (62) is greater than the width of the first groove (61). The magnetic grating ruler (3) is embedded in the first groove (61), and a protective steel strip (7) is embedded in the second groove (62).

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