Novel vernier caliper capable of scribing

Abstract

The utility model discloses a novel vernier caliper capable of scribing, and relates to the technical field of vernier calipers. The novel vernier caliper capable of scribing comprises a main scale, the lineation assembly comprises an outer measuring claw, a lineation block is arranged at the lower end of the outer measuring claw, a limiting block is fixedly connected to the upper end of the lineation block, a limiting plate is slidably connected to the surface of the limiting block, the limiting block and the lineation block are arranged at the lower end of the outer measuring claw, the limiting block is fixed through the limiting plate, and therefore the lineation block can be detached and replaced conveniently; the scribing block is easy to disassemble and replace, so that the vernier caliper is more convenient to maintain, the scribing block can be replaced in time when being worn or damaged, the overall service life of the vernier caliper is prolonged, the accuracy of measurement and scribing can be ensured by replacing a new scribing block, errors caused by wear of the scribing block are avoided, and the service life of the vernier caliper is prolonged. According to different measuring and scribing requirements, the scribing blocks made of different materials can be replaced, and the applicability of the vernier caliper is improved.

Description

Technical Field

[0001] This utility model relates to the field of vernier caliper technology, and in particular to a novel vernier caliper that can be scribed. Background Technology

[0002] A vernier caliper is a measuring instrument used to measure length, inner and outer diameters, and depth. It consists of two parts: a main scale and a sliding vernier scale attached to the main scale. The main scale is generally measured in millimeters, while the vernier scale has 10, 20, or 50 divisions. Depending on the number of divisions, vernier calipers can be classified as 10-division vernier calipers, 20-division vernier calipers, 50-division vernier calipers, etc.

[0003] A vernier caliper has two sets of movable measuring jaws on its main scale and vernier scale: an inner measuring jaw and an outer measuring jaw. The inner measuring jaw is usually used to measure the inner diameter, while the outer measuring jaw is usually used to measure the length and outer diameter. Chinese utility model patent, authorized announcement number "CN209431985U", discloses a vernier caliper including a fixed main scale and a vernier slide scale sleeved on and slidably connected to the fixed main scale. The head of the fixed main scale and the vernier slide scale are respectively provided with inner measuring jaws at one end of the head of the fixed main scale. The inner measuring jaws on the fixed main scale and the vernier slide scale are arranged opposite each other, and the surface of the opposing inner measuring jaws is the measuring surface. The inner measuring jaw includes a fixed seat detachably connected to the fixed main scale or the vernier slide scale. A slide rod is provided on the side of the fixed seat away from the fixed main scale. The axis of the slide rod is perpendicular to the axis of the fixed main scale. A detection jaw is provided on the slide rod that slides along the length direction of the slide rod.

[0004] The above-mentioned technical solution has the effect of adjustable length of internal measuring jaws, which can measure the inner diameter of deeper parts of the tube. However, the above-mentioned technical solution still has certain defects. In practice, vernier calipers are often used not only for measurement, but also for scribing. Although vernier calipers have a certain degree of accuracy, direct use for scribing may not meet the high precision requirements, especially for machining or measurement applications that require very high precision. The measuring jaws of vernier calipers are relatively sharp, and direct use for scribing may increase the risk of damaging the calipers or the surface of the workpiece, reducing the accuracy and service life of the vernier calipers. Therefore, this utility model proposes a new solution. Utility Model Content

[0005] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a new type of scribing vernier caliper. This solves the problem that although vernier calipers have a certain degree of accuracy, they may not meet high precision requirements when used directly for scribing, especially in machining or measurement applications that require very high precision. The measuring jaws of vernier calipers are relatively sharp, and using them directly for scribing may increase the risk of damaging the caliper or the surface of the workpiece, thereby reducing the accuracy and service life of the vernier caliper.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel scribing vernier caliper, comprising a main scale;

[0007] A scribing assembly is mounted on the main scale. The scribing assembly includes an outer measuring jaw, which is fixedly connected to the lower end of the main scale. A scribing block is provided at the lower end of the outer measuring jaw, and a limit block is fixedly connected to the upper end of the scribing block. A first sliding groove is provided on the surface of the outer measuring jaw, and a second sliding groove is provided on the left and right sides of the limit block, respectively.

[0008] The surface of the limiting block is slidably connected to the limiting plate, the limiting plate is slidably connected to the second sliding groove, the bottom of the scribing block is sharp, and the limiting block is a combination of a cylinder and a square prism.

[0009] The limiting plate is U-shaped.

[0010] Preferably, a vernier scale is slidably sleeved on the surface of the main scale, an LCD screen is fixedly installed at the front end of the vernier scale, and there are two scribing components, which are symmetrically arranged at the lower ends of the main scale and the vernier scale respectively;

[0011] The inner sides of the two scribing blocks and the corresponding outer measuring jaws are flush.

[0012] Preferably, an inner measuring jaw is fixedly connected to the upper end of the main scale, and an inner measuring jaw is also fixedly connected to the upper end of the vernier scale.

[0013] Both internal measuring jaws are sharp.

[0014] Preferably, the vernier caliper has an internal threaded connection with a fastening nut.

[0015] Preferably, a main grid is fixedly installed on the surface of the main scale, and a secondary grid is fixedly installed on the side of the vernier scale near the main grid;

[0016] The main scale has graduations on its surface.

[0017] Preferably, the LCD screen has a large screen on the front side, and a voltage comparator and a processor are installed inside the LCD screen;

[0018] Several buttons are located on the front side of the LCD screen.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This new type of scribing vernier caliper features a limit block and a scribing block at the lower end of the outer measuring jaws, with the limit block secured by a limit plate. This facilitates the disassembly and replacement of the scribing block, making maintenance of the vernier caliper more convenient. Replacement of the limit block and scribing block can be completed without complex operations. When the scribing block is worn or damaged, it can be replaced promptly, extending the overall service life of the vernier caliper. Replacing with a new scribing block ensures the accuracy of measurement and scribing, avoiding errors caused by scribing block wear. Different materials can be used for scribing blocks according to different measurement and scribing needs, improving the applicability of the vernier caliper. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of a novel scribing vernier caliper according to the present invention;

[0023] Figure 2 This is a schematic diagram of the rear side of the vernier scale of this utility model;

[0024] Figure 3 This is a schematic diagram of the main grid of this utility model;

[0025] Figure 4 This is a schematic diagram of the external measuring claw of this utility model;

[0026] Figure 5 This is a schematic diagram of the scribing block of this utility model;

[0027] Figure 6 This is a schematic diagram of the second slide groove of this utility model;

[0028] Figure 7 This utility model Figure 1 Enlarged diagram of point A in the middle.

[0029] Reference numerals: 1. Main scale; 2. Vernier scale; 3. LCD screen; 4. External measuring jaw; 5. Internal measuring jaw; 6. Fastening nut; 7. Main grid; 8. Secondary grid; 9. First slide groove; 10. Limiting block; 11. Scribing block; 12. Limiting plate; 13. Second slide groove. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Please see Figure 1-7 This utility model provides a technical solution: a novel vernier caliper with scribing capability, including a main scale 1 and a scribing assembly. The scribing assembly is disposed on the main scale 1 and includes an outer measuring jaw 4, which is fixedly connected to the lower end of the main scale 1. A scribing block 11 is disposed at the lower end of the outer measuring jaw 4, and a limiting block 10 is fixedly connected to the upper end of the scribing block 11. A first sliding groove 9 is formed on the surface of the outer measuring jaw 4, and second sliding grooves 13 are formed on the left and right sides of the limiting block 10, respectively. A limiting plate 12 is slidably connected to the surface of the limiting block 10, and the limiting plate 12 is slidably connected to the second sliding groove 13. The bottom of the scribing block 11 is sharp, the limiting block 10 is a combination of a cylinder and a quadrangular prism, and the limiting plate 12 is U-shaped.

[0035] A vernier scale 2 is slidably fitted onto the surface of the main scale 1. An LCD screen 3 is fixedly installed at the front end of the vernier scale 2. There are two scribing components, which are symmetrically arranged at the lower ends of the main scale 1 and the vernier scale 2. The inner sides of the two scribing blocks 11 and the corresponding outer measuring jaws 4 are flush.

[0036] The upper end of the main scale 1 is fixedly connected with an inner measuring jaw 5, and the upper end of the vernier scale 2 is also fixedly connected with an inner measuring jaw 5. Both inner measuring jaws 5 are sharp, and the internal thread of the vernier scale 2 is connected with a fastening nut 6.

[0037] The main scale 1 has a main grid 7 fixedly installed on its surface, and the vernier scale 2 has a secondary grid 8 fixedly installed on the side near the main grid 7. The main scale 1 has graduations on its surface.

[0038] The front of LCD screen 3 has a large screen, and inside LCD screen 3 are installed a voltage comparator and a processor. Multiple buttons are also located on the front of LCD screen 3.

[0039] The voltage comparator model is: TLC354;

[0040] The processor model is: CPU89C52;

[0041] The capacitive grating sensor model is ZCS1100.

[0042] When using this device, the workpiece is measured by the inner side of the two outer measuring jaws 4. The vernier scale 2 and LCD screen 3 slide on the surface of the main scale 1. The LCD screen 3 is activated, and the two outer measuring jaws 4 are brought into contact to zero the LCD screen 3. Then, the distance between the two outer measuring jaws 4 is adjusted to be greater than the measured size. The fastening nut 6 is pushed to make the outer measuring jaws 4 fit tightly against the measuring surface. The fastening nut 6 is rotated to make the fastening nut 6 contact the main scale 1, which facilitates the fixing between the main scale 1 and the vernier scale 2 and the fixing of the position of the vernier scale 2. Then, the data on the LCD screen 3 is read.

[0043] Adjust the distance between the two inner measuring jaws 5 on the main scale 1 to be smaller than the size to be measured, push the vernier scale 2 so that the inner measuring jaws extend into the object to be measured and are in close contact with the measuring surface, rotate the fastening nut 6 so that the fastening nut 6 contacts the main scale 1, so as to fix the main scale 1 and the vernier scale 2, and fix the position of the vernier scale 2. Then read the data on the LCD screen 3.

[0044] The main grid 7 and the secondary grid 8 together form a capacitive grating displacement sensor. Utilizing the capacitive grating effect, the mechanical displacement of the vernier scale 2 is converted into the phase change of an electrical signal, which is then sent to the measurement circuit for data processing. The capacitive grating sensor is controlled by the external measuring jaw 4 of the precision voltage comparator TLC35. The CPU89C52 provides the required excitation signal and receives its sensing signal. The phase difference between the excitation signal and the sensing signal is measured by the phase detection circuit. After a series of changes, the length of movement can be obtained and the data is displayed on the LCD screen 3.

[0045] Since the main scale 1 will be used for auxiliary scribing during use, first prepare the limiting block 10 and scribing block 11. Pass the limiting block 10 through the first groove 9 on the surface of the outer measuring jaw 4, and insert the limiting plate 12 into the second groove 13 on the surface of the limiting block 10 to fix the limiting block 10 and scribing block 11. This facilitates fixing the limiting block 10 and scribing block 11 to the lower end of the outer measuring jaw 4, ensuring that the limiting block 10 and scribing block 11 are stably installed at the lower end of the outer measuring jaw 4. Move the vernier scale 2 to move the outer measuring jaw 4 and scribing block... 11. When the caliper approaches the predetermined size, observe the reading on the LCD screen 3. When the predetermined size is reached, rotate the fastening nut 6 above the vernier scale 2 to fix the vernier scale 2 and the main scale 1. When scribing is required, press the vernier caliper with appropriate force to ensure that the scribing blocks 11 on both sides are in contact with the workpiece and that the scribing blocks 11 on both sides are aligned with the workpiece to be scribed. Slide the main scale 1 evenly along the direction perpendicular to the main scale 1 so that the scribing blocks 11 scribing along the workpiece. At the same time, pay attention to maintaining a smooth slide and avoid jumping and shaking to ensure accurate scribing.

[0046] Repeat the above steps to use the vernier caliper for accurate line marking.

[0047] By using the scribing block 11, the scribing operation is avoided by using the external measuring jaw 4, thus preventing wear on the external measuring jaw 4 and extending the service life of the vernier caliper. Since the lower end of the scribing block 11 will wear when scribing, the limiting plate 12 limits the limiting block 10, and the first sliding groove 9 limits the limiting block 10, which facilitates the fixation of the limiting block 10 and the scribing block 11. Through the sliding connection between the first sliding groove 9 and the limiting block 10, the limiting plate 12 and the limiting block 10 are slidably connected, which facilitates the replacement of the limiting block 10 and the scribing block 11 after they have worn to a certain extent.

[0048] The easy disassembly and replacement of the scribing block 11 makes the maintenance of the vernier caliper more convenient. The limit block 10 and scribing block 11 can be replaced without complicated operations. When the scribing block 11 is worn or damaged, it can be replaced in time, thereby extending the overall service life of the vernier caliper. Replacing with a new scribing block can ensure the accuracy of measurement and scribing, and avoid errors caused by wear of the scribing block 11. According to different measurement and scribing needs, scribing blocks 11 of different materials can be replaced to improve the applicability of the vernier caliper.

[0049] Furthermore, by fixing multiple LED backlights to the back of the vernier caliper 2, and using a high-definition LCD screen 3, the screen is larger and has a wider viewing angle compared to similar products. The addition of backlighting facilitates outdoor use at night, enhancing the practicality and convenience of the vernier caliper.

[0050] Furthermore, by setting a limiting block 10 and a scribing block 11 at the lower end of the outer measuring jaw 4, and using a limiting plate 12 to fix the limiting block 10, it is easy to disassemble and replace the scribing block 11. This makes the maintenance of the vernier caliper more convenient, and the replacement of the limiting block 10 and the scribing block 11 can be completed without complicated operations. When the scribing block 11 is worn or damaged, it can be replaced in time, thereby extending the overall service life of the vernier caliper. Replacing with a new scribing block can ensure the accuracy of measurement and scribing, and avoid errors caused by wear of the scribing block 11. According to different measurement and scribing requirements, scribing blocks 11 of different materials can be replaced, improving the applicability of the vernier caliper.

[0051] Working principle: When using this device, the workpiece is measured by the inner sides of the two outer measuring jaws 4. The vernier scale 2 and LCD screen 3 slide on the surface of the main scale 1. The LCD screen 3 is activated, and the two outer measuring jaws 4 are brought into contact to zero the LCD screen 3. Then, the distance between the two outer measuring jaws 4 is adjusted to be greater than the measured dimension. The fastening nut 6 is pushed to make the outer measuring jaws 4 fit tightly against the measuring surface. The fastening nut 6 is rotated to make the fastening nut 6 contact the main scale 1, which facilitates the fixing between the main scale 1 and the vernier scale 2 and the fixing of the position of the vernier scale 2. Then, the data on the LCD screen 3 is read.

[0052] Adjust the distance between the two inner measuring jaws 5 on the main scale 1 to be smaller than the size to be measured, push the vernier scale 2 so that the inner measuring jaws extend into the object to be measured and are in close contact with the measuring surface, rotate the fastening nut 6 so that the fastening nut 6 contacts the main scale 1, so as to fix the main scale 1 and the vernier scale 2, and fix the position of the vernier scale 2. Then read the data on the LCD screen 3.

[0053] The main grid 7 and the secondary grid 8 together form a capacitive grating displacement sensor. Utilizing the capacitive grating effect, the mechanical displacement of the vernier scale 2 is converted into the phase change of an electrical signal, which is then sent to the measurement circuit for data processing. The capacitive grating sensor is controlled by the external measuring jaw 4 of the precision voltage comparator TLC35. The CPU89C52 provides the required excitation signal and receives its sensing signal. The phase difference between the excitation signal and the sensing signal is measured by the phase detection circuit. After a series of changes, the length of movement can be obtained and the data is displayed on the LCD screen 3.

[0054] Since the main scale 1 will be used for auxiliary scribing during use, first prepare the limiting block 10 and scribing block 11. Pass the limiting block 10 through the first groove 9 on the surface of the outer measuring jaw 4, and insert the limiting plate 12 into the second groove 13 on the surface of the limiting block 10 to fix the limiting block 10 and scribing block 11. This facilitates fixing the limiting block 10 and scribing block 11 to the lower end of the outer measuring jaw 4, ensuring that the limiting block 10 and scribing block 11 are stably installed at the lower end of the outer measuring jaw 4. Move the vernier scale 2 to move the outer measuring jaw 4 and scribing block... 11. When the caliper approaches the predetermined size, observe the reading on the LCD screen 3. When the predetermined size is reached, rotate the fastening nut 6 above the vernier scale 2 to fix the vernier scale 2 and the main scale 1. When scribing is required, press the vernier caliper with appropriate force to ensure that the scribing blocks 11 on both sides are in contact with the workpiece and that the scribing blocks 11 on both sides are aligned with the workpiece to be scribed. Slide the main scale 1 evenly along the direction perpendicular to the main scale 1 so that the scribing blocks 11 scribing along the workpiece. At the same time, pay attention to maintaining a smooth slide and avoid jumping and shaking to ensure accurate scribing.

[0055] Repeat the above steps to use the vernier caliper for accurate line marking.

[0056] By using the scribing block 11, the scribing operation is avoided by using the external measuring jaw 4, thus preventing wear on the external measuring jaw 4 and extending the service life of the vernier caliper. Since the lower end of the scribing block 11 will wear when scribing, the limiting plate 12 limits the limiting block 10, and the first sliding groove 9 limits the limiting block 10, which facilitates the fixation of the limiting block 10 and the scribing block 11. Through the sliding connection between the first sliding groove 9 and the limiting block 10, the limiting plate 12 and the limiting block 10 are slidably connected, which facilitates the replacement of the limiting block 10 and the scribing block 11 after they have worn to a certain extent.

[0057] The easy disassembly and replacement of the scribing block 11 makes the maintenance of the vernier caliper more convenient. The limit block 10 and scribing block 11 can be replaced without complicated operations. When the scribing block 11 is worn or damaged, it can be replaced in time, thereby extending the overall service life of the vernier caliper. Replacing with a new scribing block can ensure the accuracy of measurement and scribing, and avoid errors caused by wear of the scribing block 11. According to different measurement and scribing needs, scribing blocks 11 of different materials can be replaced to improve the applicability of the vernier caliper.

[0058] Furthermore, by fixing multiple LED backlights to the back of the vernier caliper 2, and using a high-definition LCD screen 3, the screen is larger and has a wider viewing angle compared to similar products. The addition of backlighting facilitates outdoor use at night, enhancing the practicality and convenience of the vernier caliper.

[0059] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A novel scribing vernier caliper, characterized in that: Including the main scale (1); The scribing assembly is set on the main scale (1). The scribing assembly includes an outer measuring jaw (4). The outer measuring jaw (4) is fixedly connected to the lower end of the main scale (1). A scribing block (11) is set at the lower end of the outer measuring jaw (4). A limit block (10) is fixedly connected to the upper end of the scribing block (11). A first sliding groove (9) is opened on the surface of the outer measuring jaw (4). A second sliding groove (13) is opened on the left and right sides of the limit block (10). The surface of the limiting block (10) is slidably connected to the limiting plate (12), the limiting plate (12) is slidably connected to the second sliding groove (13), the bottom of the scribing block (11) is sharp, and the limiting block (10) is a combination of cylinder and quadrangular prism. The limiting plate (12) is U-shaped.

2. The novel scribing vernier caliper according to claim 1, characterized in that: The surface of the main scale (1) is slidably fitted with a vernier scale (2), and an LCD screen (3) is fixedly installed at the front end of the vernier scale (2). There are two scribing components, which are symmetrically arranged at the lower ends of the main scale (1) and the vernier scale (2). The inner sides of the two scribing blocks (11) and the corresponding outer measuring jaws (4) are flush.

3. The novel scribing vernier caliper according to claim 1, characterized in that: The upper end of the main scale (1) is fixedly connected to an inner measuring jaw (5), and the upper end of the vernier scale (2) is also fixedly connected to an inner measuring jaw (5). Both internal measuring claws (5) are sharp.

4. A novel scribing vernier caliper according to claim 2, characterized in that: The vernier scale (2) is internally threaded with a fastening nut (6).

5. A novel scribing vernier caliper according to claim 1, characterized in that: The main scale (1) is fixedly mounted with a main grid (7), and the vernier scale (2) is fixedly mounted with a secondary grid (8) on the side near the main grid (7). The surface of the main scale (1) is marked with graduations.

6. A novel scribing vernier caliper according to claim 2, characterized in that: The LCD screen (3) has a large screen on the front side, and a voltage comparator and a processor are installed inside the LCD screen (3); Multiple buttons are provided on the front side of the LCD screen (3).

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