Accurate measurement sliding ruler device for furniture plate

Abstract

This utility model provides a sliding ruler device for precise measurement of furniture boards, belonging to the field of furniture board measurement technology. The device includes a ruler body, a sliding measurement component, and a scale display component. The ruler body has a long, thin strip structure. A guide groove is formed along the length of the top surface of the ruler body. The cross-section of the guide groove is an inverted trapezoidal structure. The sliding measurement component includes a slider body and a measuring arm. A raised guide rail matching the guide groove is provided at the bottom of the slider body. The cross-section of the raised guide rail is a regular trapezoidal structure and slides in cooperation with the guide groove. The measuring arm is fixedly connected to the side of the slider body. The measuring arm has an L-shaped plate structure. The vertical section of the measuring arm is vertically fixedly connected to the slider body, and the horizontal section of the measuring arm extends vertically to the side of the ruler body. The scale display component is located on the top surface of the ruler body and on one side of the guide groove.

Description

Technical Field

[0001] This utility model belongs to the field of furniture board measurement technology, specifically, it relates to a sliding scale device for precise measurement of furniture boards. Background Technology

[0002] In the furniture manufacturing industry, accurate measurement of boards is a crucial step in ensuring product quality. Traditional measurement methods mainly rely on manual reading using ordinary rulers or measuring tapes. However, these tools are prone to bending and deformation when measuring larger boards, and the reading accuracy is greatly affected by the operator's perspective and experience. As the precision requirements of furniture manufacturing continue to increase, scale devices with sliding measuring components have emerged in the market. These devices use a slider moving on the scale in conjunction with a measuring arm to locate and read the dimensions of the board edge. However, existing sliding scale devices generally suffer from loose fit between the sliding measuring component and the scale body. Improper control of the lateral and longitudinal clearances of the slider in the guide structure leads to wobbling during measurement. Insufficient connection strength between the measuring arm and the slider makes the measuring arm prone to deflection when a measuring force is applied. These problems directly affect the stability of the measurement reference surface, thus reducing measurement accuracy. Although some products attempt to fix the slider position by adding complex locking mechanisms, this brings new problems of cumbersome operation and increased costs. Therefore, the industry urgently needs a board measuring device that is simple in structure, has stable sliding, accurate measurement, and reasonable cost to meet the actual needs of furniture manufacturing. Utility Model Content

[0003] In view of this, the present invention provides a sliding ruler device for precise measurement of furniture boards, which can solve the technical problems of existing furniture board measuring tools, such as unstable cooperation between the sliding measuring component and the ruler body, resulting in low measurement accuracy and easy deviation or shaking of the measuring arm, thus making it impossible to obtain accurate measurement results.

[0004] This utility model is implemented as follows:

[0005] This utility model provides a sliding ruler device for precise measurement of furniture boards, including a ruler body, a sliding measuring component, and a scale display component. The ruler body has a long, thin strip structure, and a guide groove is formed along its length on the top surface of the ruler body. The cross-section of the guide groove is an inverted trapezoidal structure. The sliding measuring component includes a slider body and a measuring arm. The bottom of the slider body is provided with a raised guide rail that matches the guide groove. The cross-section of the raised guide rail is a regular trapezoidal structure and slides in cooperation with the guide groove. The measuring arm is fixedly connected to the side of the slider body. The measuring arm has an L-shaped plate structure. The vertical section of the measuring arm is vertically fixedly connected to the slider body, and the horizontal section of the measuring arm extends vertically to the side of the ruler body. The scale display component is located on the top surface of the ruler body and on one side of the guide groove. The scale display component includes scale lines and numerical markings. An indicator mark is provided on the slider body, and the indicator mark is aligned with the scale lines for reading the measurement value.

[0006] The technical advantages of the sliding ruler device for precise measurement of furniture boards provided by this utility model are as follows: By setting a guide groove with an inverted trapezoidal cross-section at the top of the ruler body and setting a matching trapezoidal protruding guide rail at the bottom of the slider body, a stable sliding fit relationship is formed between the sliding measuring component and the ruler body. This ensures that the sliding measuring component moves in a straight line without deviation or shaking during the measurement process. At the same time, the L-shaped plate-like measuring arm is fixedly connected to the slider body through a vertical section and extends to the side of the ruler body through a horizontal section, forming a precise measurement reference surface. Combined with the aligned reading method of the scale display component and the indicator mark, the precise measurement of the furniture board size is realized. The overall structure is simple and reasonable and easy to operate.

[0007] Based on the above technical solution, the sliding scale device for precise measurement of furniture boards of this utility model can be further improved as follows:

[0008] The depth of the guide groove is greater than the height of the raised guide rail, and the raised guide rail has a vertical clearance within the guide groove.

[0009] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design that the depth of the guide groove is greater than the height of the raised guide rail allows the raised guide rail to have a certain vertical movement gap in the guide groove. This gap design ensures smooth sliding while preventing jamming caused by manufacturing errors or wear during use. It also ensures that the slider body has good smooth movement when sliding along the guide groove, avoiding movement difficulties caused by excessively tight fit or decreased measurement accuracy caused by excessively loose fit, thus improving the service life and measurement stability of the device.

[0010] Furthermore, the bottom surface of the ruler body is flat, and both end faces of the ruler body are provided with limiting bosses, the height of which is less than the thickness of the ruler body.

[0011] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the flat surface at the bottom of the scale body provides a stable support benchmark for measurement, enabling the device to be placed stably on the surface of the plate being measured. The limiting bosses on the two end faces, whose height is less than the thickness of the scale body, play a minor supporting role when the scale body is placed. At the same time, the setting of the limiting bosses also provides a physical boundary limit for the movement range of the sliding measurement component, preventing the slider body from detaching from the scale body when moving rapidly, thus enhancing the safety and reliability of the device.

[0012] Furthermore, the front end face of the slider body has an arc-shaped protrusion structure, and the rear end face of the slider body has a flat surface structure.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the arc-shaped protrusion structure on the front end face of the slider body reduces the contact stress between the slider body and the end of the guide groove when the slider body moves in the guide groove, avoiding wear or damage caused by collision with sharp edges. The flat surface structure on the rear end face facilitates the user's finger push operation. The combination design of arc and flat surface not only ensures the smoothness of sliding but also improves the comfort of operation. At the same time, the arc-shaped front end face plays a guiding role during sliding, making it easier for the slider body to enter the guide groove and maintain the correct sliding posture.

[0014] Furthermore, the free end edge of the horizontal section of the measuring arm has an acute chamfered structure, and the inclination angle of the acute chamfered structure is 30° to 45°.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The free end edge of the horizontal section of the measuring arm is provided with an acute chamfer structure and the tilt angle is controlled within the range of 30° to 45°. This acute angle design allows the measuring end of the measuring arm to accurately fit the edge position of the measured board. The reasonable selection of the tilt angle not only ensures that the measuring end has sufficient strength and is not easily deformed, but also ensures that it can be accurately located at the edge of the board during measurement without causing measurement errors due to the excessive bluntness of the measuring end. This improves the accuracy of judging the edge position of the board and the reliability of the measurement results.

[0016] Furthermore, the top surface of the slider body is provided with an anti-slip texture, which is a horizontally arranged wavy raised structure.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The horizontally arranged corrugated raised anti-slip texture on the top surface of the slider body increases the friction coefficient between the user's fingers and the contact surface of the slider body, making it less likely for the user's fingers to slip when pushing the slider body to adjust the measurement position. Especially when the hands are sweaty or oily, it can still maintain good operability. The corrugated raised structure also provides clear tactile feedback to the fingers, making it easier for the user to accurately grasp the movement status of the slider body, thus improving the accuracy of device operation and user experience.

[0018] Furthermore, the extension length of the raised guide rail along the length direction of the slider body is greater than twice the width of the slider body.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the extension length of the raised guide rail along the length direction of the slider body is designed to be more than twice the width of the slider body. This longer guide rail structure increases the contact length between the slider body and the guide groove, enabling the sliding measuring component to obtain a larger support area and a more stable guiding effect on the scale body. This effectively prevents the slider body from tilting or twisting during movement, ensuring that the measuring arm always maintains the correct posture perpendicular to the scale body, thereby ensuring the accuracy of the measurement reference surface and improving the accuracy and reliability of the overall measurement system.

[0020] Furthermore, a reinforcing rib is provided at the connection between the measuring arm and the slider body. The reinforcing rib has a triangular plate structure and its hypotenuse is fixedly connected to the outer surface of the vertical section of the measuring arm.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: a triangular plate-shaped reinforcing rib is set at the connection between the measuring arm and the slider body. The structure in which the hypotenuse is fixedly connected to the outer surface of the vertical section of the measuring arm forms a stable triangular support system, which significantly enhances the structural strength and rigidity of the connection between the measuring arm and the slider body. It effectively resists the deformation caused by the measuring arm being subjected to lateral or torsional forces during the measurement process, ensures that the measuring arm can still maintain a stable vertical state when subjected to the pressure of the plate edge, prevents measurement errors caused by insufficient strength of the connection part, and extends the service life of the device.

[0022] Furthermore, the main body of the scale is made of aluminum alloy, while the slider body and the measuring arm are both made of engineering plastic.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the main body of the scale is made of aluminum alloy, which has the characteristics of being lightweight, high-strength, and corrosion-resistant, ensuring that the main body of the scale is not easily deformed during long-term use and that the scale markings remain clear and stable. The slider body and measuring arm are made of engineering plastic, which reduces the overall manufacturing cost and weight of the device. The self-lubricating properties of engineering plastic make the slider body have low frictional resistance when sliding in the guide groove and are not easy to wear the surface of the scale body. The reasonable combination of the two materials achieves an optimal balance between device performance and cost.

[0024] Furthermore, the indicator mark is a red line embedded in the top surface of the slider body. The width of the red line is less than the minimum spacing between the scale marks. The scale marks are evenly distributed along the length of the scale body and the spacing is 1mm.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the embedded red marking design of the indicator marks makes the marks flush with the surface of the slider body and will not be worn or detached due to protrusion; the setting that the width of the red markings is smaller than the minimum spacing of the scale markings ensures that the reading can be accurately aligned with a single scale line without causing visual interference; the scale markings are evenly distributed along the length of the scale body at 1mm intervals, providing a fine reading reference for measurement; the contrast between the red and scale marking colors enhances visual recognition, enabling users to quickly and accurately read measurement values ​​under various lighting conditions, thus improving measurement efficiency and accuracy.

[0026] Compared with existing technologies, the beneficial effects of the sliding scale device for precise measurement of furniture boards provided by this utility model are as follows: This utility model establishes a stable and reliable sliding guide mechanism by opening a guide groove with an inverted trapezoidal cross-section at the top of the scale body and setting a positive trapezoidal raised guide rail at the bottom of the slider body that precisely matches it. This completely solves the problem of offset and shaking of the sliding measurement component during movement. Combined with the vertical fixed connection method of the L-shaped measuring arm and the horizontal extension structure, a precise measurement reference surface system is formed. At the same time, through optimizing the shape of the front and rear end faces of the slider body, adding anti-slip texture, extending the length of the raised guide rail, and setting triangular reinforcing ribs at the connection parts, etc., the smoothness of sliding, the comfort of operation, the structural stability, and the reliability of measurement of the device are comprehensively improved. The precise alignment design of the indicator mark and the scale display component makes the reading more intuitive and accurate. The combination of aluminum alloy and engineering plastic materials achieves the optimal balance between performance and cost. Compared with existing technologies, this utility model significantly improves the convenience of use and durability while ensuring measurement accuracy. It provides an effective technical solution for precise measurement of board dimensions in the furniture manufacturing industry that is simple in structure, reliable in performance, and reasonable in cost. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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.

[0028] Figure 1 A schematic diagram of a sliding scale device for precise measurement of furniture boards;

[0029] Figure 2 A top view of a sliding scale device for precise measurement of furniture boards;

[0030] Figure 3 A cross-sectional view of a sliding scale device for precise measurement of furniture boards;

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Scale body; 11. Guide groove; 2. Sliding measuring component; 21. Slider body; 211. Raised guide rail; 22. Measuring arm. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0034] like Figures 1-3 The diagram shows a first embodiment of a sliding ruler device for precise measurement of furniture boards provided by this utility model. In this embodiment, it includes a ruler body 1, a sliding measuring component 2, and a scale display component. The ruler body has a long and thin strip structure. A guide groove 11 is formed on the top surface of the ruler body along the length direction. The cross-section of the guide groove is an inverted trapezoidal structure. The sliding measuring component includes a slider body 21 and a measuring arm 22. A raised guide rail 211 matching the guide groove is provided at the bottom of the slider body. The cross-section of the raised guide rail is a regular trapezoidal structure and slides in cooperation with the guide groove. The measuring arm is fixedly connected to the side of the slider body. The measuring arm has an L-shaped plate structure. The vertical section of the measuring arm is fixedly connected to the slider body vertically. The horizontal section of the measuring arm extends vertically to the side of the ruler body. The scale display component is set on the top surface of the ruler body and located on one side of the guide groove. The scale display component includes scale lines and numerical markings. An indicator mark is provided on the slider body. The indicator mark is aligned with the scale lines for reading the measurement value.

[0035] In the above technical solution, the depth of the guide groove is greater than the height of the raised guide rail, and the raised guide rail has a vertical movement gap within the guide groove.

[0036] Furthermore, in the above technical solution, the bottom surface of the ruler body is a flat surface, and both end faces of the ruler body are provided with limiting bosses, the height of which is less than the thickness of the ruler body.

[0037] Furthermore, in the above technical solution, the front end face of the slider body has an arc-shaped protrusion structure, and the rear end face of the slider body has a flat surface structure.

[0038] Furthermore, in the above technical solution, the free end edge of the horizontal section of the measuring arm has an acute chamfered structure, and the inclination angle of the acute chamfered structure is 30° to 45°.

[0039] Furthermore, in the above technical solution, the top surface of the slider body is provided with anti-slip texture, which is a horizontally arranged corrugated raised structure.

[0040] Furthermore, in the above technical solution, the extension length of the raised guide rail along the length direction of the slider body is greater than twice the width of the slider body.

[0041] Furthermore, in the above technical solution, a reinforcing rib is provided at the connection between the measuring arm and the slider body. The reinforcing rib has a triangular plate structure and its hypotenuse is fixedly connected to the outer surface of the vertical section of the measuring arm.

[0042] Furthermore, in the above technical solution, the main body of the scale is made of aluminum alloy, while the slider body and measuring arm are both made of engineering plastic.

[0043] Furthermore, in the above technical solution, the indicator mark is a red line embedded in the top surface of the slider body. The width of the red line is less than the minimum spacing between the scale lines. The scale lines are evenly distributed along the length of the scale body and the spacing is 1mm.

[0044] The following is a specific embodiment 1 of this utility model. In this embodiment, the scale body is made of 6063 aluminum alloy through extrusion molding. The overall length of the scale body is 500mm, the width is 35mm, and the thickness is 8mm. A guide groove is provided at the center of the top surface of the scale body along the length direction. The cross-section of the guide groove is an inverted trapezoidal structure with an upper opening width of 12mm, a lower base width of 8mm, and a depth of 5mm. The angle between the inclined surfaces on both sides of the guide groove and the vertical direction is 15°. The bottom surface of the scale body is precision milled to form a flatness error of less than 0.1mm. Each of the two end faces of the scale body is provided with a limiter with a height of 1mm and a width of 3mm. The slider body is made of polyoxymethylene engineering plastic using injection molding. The slider body is 40mm long, 28mm wide, and 15mm high. A raised guide rail is located at the bottom of the slider body, which mates with a guide groove. This raised guide rail has a trapezoidal cross-section with a bottom width of 11.8mm, a top width of 7.8mm, and a height of 4.5mm. The angle between the inclined surfaces on both sides of the raised guide rail and the vertical direction is 15°, the same as the angle of the inclined surface of the guide groove. The raised guide rail extends 32mm along the length of the slider body. The front face of the slider body is designed as an 8mm radius arc protrusion, while the rear face is flat. The top surface of the slider body has 12 horizontally arranged corrugated anti-corrosion strips. The sliding texture has a height of 0.8mm and a width of 1.5mm for each wave, with a spacing of 2mm between adjacent waves. The measuring arm is made of the same polyoxymethylene engineering plastic material as the slider body. The measuring arm has an L-shaped plate structure with a vertical section height of 45mm and a thickness of 3mm, and a horizontal section length of 60mm and a thickness of 3mm. The vertical section of the measuring arm is fixedly connected to the left side of the slider body using ultrasonic welding. The free end edge of the horizontal section of the measuring arm is machined into an acute chamfer with an inclination angle of 38°. An isosceles right-angled triangular reinforcing rib is provided at the connection between the vertical section of the measuring arm and the slider body. The two right-angled sides of this reinforcing rib are both 10mm long and 2.5mm thick, reinforcing... The beveled edge of the rib plate is fixed to the outer surface of the vertical section of the measuring arm with adhesive. The scale display component is directly engraved on the right side of the guide groove on the top surface of the scale body using laser engraving technology. The scale marks are thin black lines with a width of 0.2 mm, evenly distributed at 1 mm intervals along the length of the scale. Every 10 mm, a thicker mark with a width of 0.4 mm is set and marked with the value. A red indicator line with a width of 0.15 mm is embedded in the top of the slider body. This red mark line is made by laser engraving and then filling with red paint, and is flush with the surface of the slider. The scale device in this embodiment weighs about 180g, which is convenient for hand operation. The measurement accuracy reaches ±0.5 mm, which meets the conventional measurement needs of furniture boards.

[0045] The following is another specific embodiment 2 of this utility model. This embodiment 2 is based on embodiment 1, and the length of the main body of the ruler is increased to 800mm to meet the measurement needs of larger size boards. At the same time, a rubber anti-slip pad is added to each end of the bottom surface of the ruler body. The rubber anti-slip pad is made of nitrile rubber material with a diameter of 15mm and a thickness of 2mm. The anti-slip pad is fixed at a position 20mm away from the end face of the ruler body by adhesive. This design makes the ruler body more stable when placed on a smooth board surface and prevents the ruler from sliding during the measurement process. In addition, the marking interval of the scale line is adjusted from 10mm / time to 5mm / time, and bold numbers are marked at every 50mm position, making the reading clearer and more convenient in a longer measurement range. The measurement range of this embodiment is expanded to 780mm, which is suitable for the size measurement of large furniture boards or whole artificial boards.

[0046] The following is another specific embodiment 3 of this utility model. This embodiment 3 is based on embodiment 1, and a fine-adjusting screw device is added to the right side of the slider body for fine adjustment of the tightness of the slider in the guide groove. The fine-adjusting screw is an M3 stainless steel screw. The right side of the slider body has a threaded hole with a depth of 8mm. The end of the fine-adjusting screw is a hemispherical structure. When the screw is screwed inward, the hemispherical end will press against the right inclined surface of the guide groove. By adjusting the screw's screw depth, the user can fine-tune the fit clearance between the slider and the guide groove according to the actual use. When ultra-high precision measurement is required, the screw can be tightened appropriately to eliminate all gaps and obtain the most stable measurement state. When rapid sliding positioning is required, the screw can be slightly loosened to reduce sliding resistance. This design provides flexible adaptability for measurement scenarios with different precision requirements. This embodiment further improves the applicability and adjustability of the measurement accuracy of the device while maintaining the advantages of the original structure.

[0047] Specifically, the principle of this utility model is as follows: By opening a guide groove with an inverted trapezoidal cross-section at the top of the scale body and setting a raised guide rail with a regular trapezoidal cross-section at the bottom of the slider body, the self-locking effect between the slider and the scale is achieved by utilizing the trapezoidal structure's narrower top and wider bottom. When the slider is placed in the guide groove, the inclined surface of the raised guide rail and the inclined surface of the guide groove form a surface contact. The slider's own weight and the vertical pressure during measurement cause the raised guide rail to fit tightly into the guide groove. This trapezoidal fit structure ensures smooth sliding while effectively limiting the lateral movement of the slider. The design that the depth of the guide groove is greater than the height of the raised guide rail provides an appropriate vertical clearance so that the slider will not get stuck due to excessive tightness. The design that the extension length of the raised guide rail is more than twice the width of the slider increases the guiding contact length and forms a stable... With fixed multi-point support, the L-shaped measuring arm establishes a rigid vertical reference by being fixedly connected to the side of the slider via a vertical section. The horizontal section extends to the side of the scale, forming a measuring surface parallel to the scale body. The triangular reinforcing ribs transfer and distribute the lateral force and bending moment borne by the measuring arm to the slider body, enhancing the deformation resistance of the connection. The arc design at the front end of the slider reduces the resistance when entering the guide groove and plays a guiding role. The anti-slip texture on the top increases friction and ensures the accuracy of operation. The sharp chamfer at the free end of the measuring arm allows the measuring surface to be accurately positioned at the edge of the plate. These structural designs work together to form a stable, accurate, and easy-to-operate measuring system, fundamentally solving the technical problem of low measurement accuracy caused by the instability of the sliding measuring component.

[0048] The specific operation or use method of this utility model is as follows: Before use, place the scale body flat on the workbench and check whether the guide groove is clean and free of debris. Align the raised guide rail of the sliding measuring component with the opening of the guide groove on the top of the scale body. Gently press down on the slider body to make the raised guide rail fully embedded in the guide groove. Press the anti-slip textured area on the top of the slider body with your finger and push the slider along the direction of the guide groove to make it slide to the starting position of the scale body. Place the furniture board to be measured flat on the workbench, ensuring that the edges of the board are flat. Place the scale body close to the edge of the board and make the flat bottom surface of the scale body in close contact with the surface of the board. To ensure proper alignment, hold the scale body steady with one hand, and with the other hand, push the slider body to bring the horizontal section of the measuring arm closer to the other edge of the material. Stop pushing the slider when the sharp chamfered edge of the horizontal section of the measuring arm just touches the edge of the material. At this point, observe the position of the red indicator mark on the scale display component at the top of the slider body. Read the scale value corresponding to the center line of the indicator mark, which is the measured dimension of the material. After measurement, push the slider body back to the starting position and remove the scale device. During use, avoid dust or debris entering the guide groove and wipe it clean with a dry cloth regularly to maintain smooth sliding.

Claims

1. A sliding scale device for precise measurement of furniture boards, comprising a scale body, a sliding measurement component, and a scale display component, characterized in that, The scale body is a long and thin strip. A guide groove is formed along the length of the top surface of the scale body. The cross-section of the guide groove is an inverted trapezoid. The sliding measuring assembly includes a slider body and a measuring arm. A raised guide rail, matching the guide groove, is provided at the bottom of the slider body. The cross-section of the raised guide rail is a regular trapezoid and slides in conjunction with the guide groove. The measuring arm is fixedly connected to the side of the slider body. The measuring arm has an L-shaped plate structure. The vertical section of the measuring arm is fixedly connected vertically to the slider body, and the horizontal section of the measuring arm extends vertically to the side of the scale body. The scale display assembly is located on the top surface of the scale body and on one side of the guide groove. The scale display assembly includes scale lines and numerical markings. An indicator mark is provided on the slider body, and the indicator mark is aligned with the scale lines for reading the measurement value.

2. The sliding scale device for precise measurement of furniture boards according to claim 1, characterized in that, The depth of the guide groove is greater than the height of the raised guide rail, and the raised guide rail has a vertical clearance within the guide groove.

3. The sliding scale device for precise measurement of furniture boards according to claim 2, characterized in that, The bottom surface of the ruler body is flat, and both end faces of the ruler body are provided with limiting bosses. The height of the limiting bosses is less than the thickness of the ruler body.

4. The sliding scale device for precise measurement of furniture boards according to claim 3, characterized in that, The front end face of the slider body has an arc-shaped protrusion structure, and the rear end face of the slider body has a flat surface structure.

5. The sliding scale device for precise measurement of furniture boards according to claim 4, characterized in that, The free end edge of the horizontal section of the measuring arm has an acute chamfered structure, and the inclination angle of the acute chamfered structure is 30° to 45°.

6. The sliding scale device for precise measurement of furniture boards according to claim 5, characterized in that, The top surface of the slider body is provided with an anti-slip texture, which is a horizontally arranged wavy raised structure.

7. A sliding scale device for precise measurement of furniture boards according to claim 6, characterized in that, The protruding guide rail extends for a length greater than twice the width of the slider body.

8. A sliding scale device for precise measurement of furniture boards according to claim 7, characterized in that, A reinforcing rib is provided at the connection between the measuring arm and the slider body. The reinforcing rib has a triangular plate structure and its hypotenuse is fixedly connected to the outer surface of the vertical section of the measuring arm.

9. A sliding scale device for precise measurement of furniture boards according to claim 8, characterized in that, The main body of the scale is made of aluminum alloy, while the slider body and the measuring arm are both made of engineering plastic.

10. A sliding scale device for precise measurement of furniture boards according to claim 9, characterized in that, The indicator mark is a red line embedded in the top surface of the slider body. The width of the red line is less than the minimum spacing between the scale marks. The scale marks are evenly distributed along the length of the scale body and the spacing is 1mm.

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