A length measuring instrument calibration device for easy tool fixing
By designing a fixing and adjustment mechanism, the problem of standard component shaking affecting accuracy during length measuring instrument calibration was solved, achieving stable fixing and height adjustment of the standard component, thus improving measurement accuracy and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN RADIO & TV MEASUREMENT & TESTING TECH CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-26
AI Technical Summary
The existing length measuring instruments require manual measurement of a standard part during calibration, which causes the standard part to shake and affects the calibration accuracy.
A length measuring instrument calibration device was designed, which includes a fixing mechanism and an adjustment mechanism. The drive motor drives the turntable to rotate, so that the connecting column moves in the spiral groove. The slider slides the clamping block close to the fixed standard part, and the height of the placement plate is adjusted by the bidirectional screw to ensure that the standard part is stable in the measurement position.
It effectively prevents standard parts from shaking, improves the accuracy and applicability of measurements, and ensures the stability and accuracy of the calibration process.
Smart Images
Figure CN224285880U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of length measuring instrument technology, specifically a length measuring instrument calibration device that facilitates tool fixing. Background Technology
[0002] A length measuring instrument is a measuring instrument that can use both direct comparison measurement method and differential comparison measurement method to accurately measure the workpiece to be tested. When using a length measuring instrument, it needs to be calibrated regularly to ensure the accuracy of the measurement. During calibration, the length measuring instrument is usually used to measure a standard part of known length, and after obtaining the error value, the length measuring instrument is adjusted.
[0003] Chinese Patent Publication No. CN112504065A discloses a length measuring instrument and its operating method, including a base, a measuring seat, a worktable, and a tail seat mounted on the base. A measuring component is slidably connected to the measuring seat, and fixed rods are provided at both ends of the measuring component. A base rod is provided between the two fixed rods, with one end of the base rod connected to a movable seat and the other end rotatably equipped with a wheel. A connecting line is wound around the wheel, with one end of the connecting line connected to one of the fixed rods and the other end equipped with a weight. An adjustment component for adjusting the position of the worktable is provided on the base. This application has the advantages of being easy to operate and adjust. However, when current length measuring instruments are calibrated using standards, they are usually measured manually by holding the standard, which is inconvenient for fixing the standard. During measurement and calibration, large errors are easily generated due to shaking, affecting the calibration accuracy. Therefore, we propose a length measuring instrument calibration device that facilitates fixing the tool. Utility Model Content
[0004] The purpose of this utility model is to provide a length measuring instrument calibration device that facilitates fixing the tool, in order to solve the problem mentioned in the background art that current length measuring instruments, when calibrated using standards, usually require manual hand-held measurement of the standard, which is inconvenient to fix the standard and is prone to large errors due to shaking during measurement and calibration, thus affecting the calibration accuracy.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a length measuring instrument calibration device for easy tool fixing, comprising a length measuring instrument body, a fixing mechanism, and an adjusting mechanism. The fixing mechanism is disposed on the top of the length measuring instrument body, and the adjusting mechanism is disposed on the top of the length measuring instrument body and connected to the bottom of the fixing mechanism. The fixing mechanism includes a sliding rod that slides through the four corners of the top of the length measuring instrument body. A placement plate is fixed to the top of the sliding rod. A groove is formed through the middle of the top of the placement plate. A connecting rod is fixed to the middle between the two sides of the groove. A slider is symmetrically slidable on the outer side wall of the connecting rod. A connecting column is fixed to the middle of the bottom of the slider. A clamping block is fixed to the top of the slider. A mounting frame is fixed to the bottom of the placement plate. A drive motor is fixed to the middle of the bottom inner side of the mounting frame. A turntable is fixed to the end of the output shaft of the drive motor. A spiral groove is formed on the top of the turntable.
[0006] As a further description of the above technical solution:
[0007] The slider is located inside the groove, and the two sides of the slider are in contact with the two sides of the groove.
[0008] As a further description of the above technical solution:
[0009] The spiral groove is provided in two parts, and the two spiral grooves are centrally symmetrical.
[0010] As a further description of the above technical solution:
[0011] The connecting post is located inside the spiral groove, and the input end of the drive motor is electrically connected to the output end of the external power supply.
[0012] As a further description of the above technical solution:
[0013] The adjustment mechanism includes fixed seats symmetrically fixed to the top of the length measuring instrument body, a bidirectional screw rod rotating through the opposite sides of the two fixed seats, handwheels fixed at both ends of the bidirectional screw rod, a limit rod fixed at the bottom between the opposite sides of the two fixed seats, a movable seat symmetrically screwed to the outer wall of the bidirectional screw rod by threads, a connecting rod rotating inside the movable seat, and a connecting seat symmetrically fixed to the bottom of the placement plate.
[0014] As a further description of the above technical solution:
[0015] The movable seat slides symmetrically on the outside of the limiting rod, and one end of the connecting rod rotates inside the connecting seat.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. This length measuring instrument calibration device, which facilitates tool fixing, starts the drive motor to rotate the turntable, causing the spiral groove to rotate. This causes the connecting column to move inside the spiral groove, gradually moving the connecting column towards the center of the turntable. This, in turn, causes the slider to slide on the outside of the connecting rod, bringing the two sliders and clamps closer together to fix the standard part. This avoids the need for manual support, prevents the standard part from shaking during measurement, prevents affecting measurement accuracy, and improves the practicality of the device.
[0018] 2. This length measuring instrument calibration device, which facilitates tool fixing, rotates a handwheel to drive a bidirectional screw to rotate. A limiting rod limits the movement of the movable seat. When the bidirectional screw rotates, the movable seats move away from each other outside the limiting rod, causing the connecting rod to deflect vertically and raise the connecting seat. This raises the placement plate, positioning the standard part at the measuring position of the length measuring instrument body. This allows for easy adjustment according to the shape of the object, ensuring that the object is always positioned at the measuring point of the length measuring instrument body, thus improving the applicability of the device. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of a length measuring instrument calibration device that facilitates tool fixing, as proposed in this utility model.
[0020] Figure 2 This is a schematic diagram of the fixing mechanism of a length measuring instrument calibration device that facilitates tool fixing, as proposed in this utility model.
[0021] Figure 3 A schematic diagram of the spiral groove structure of a length measuring instrument calibration device for easy tool fixing proposed in this utility model;
[0022] Figure 4 This is a schematic diagram of the adjustment mechanism of a length measuring instrument calibration device that facilitates tool fixing, as proposed in this utility model.
[0023] In the diagram: 100, length measuring instrument body; 200, fixing mechanism; 210, sliding rod; 220, placement plate; 230, sliding groove; 240, connecting rod; 250, slider; 251, connecting column; 260, clamping block; 270, mounting bracket; 280, drive motor; 290, turntable; 291, spiral groove; 300, adjusting mechanism; 310, fixed base; 320, bidirectional screw; 321, handwheel; 330, limit rod; 340, moving base; 350, connecting rod; 360, connecting base. Detailed Implementation
[0024] 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.
[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] This utility model provides a length measuring instrument calibration device that facilitates tool fixing. It secures standard parts, eliminating the need for manual support, preventing the standard parts from shaking during measurement, thus preventing any impact on measurement accuracy and improving the device's practicality. Please refer to [link to relevant documentation]. Figure 1-4 It includes a length measuring instrument body 100, a fixing mechanism 200, and an adjusting mechanism 300;
[0028] Please refer to it again. Figure 1 The length measuring instrument body 100 is used to install the fixing mechanism 200 and the adjustment mechanism 300;
[0029] Please refer to it again. Figure 1 The fixing mechanism 200 is located on the top of the length measuring instrument body 100, and the adjusting mechanism 300 is located on the top of the length measuring instrument body 100 and connected to the bottom of the fixing mechanism 200.
[0030] Please refer to it again. Figure 2 The fixing mechanism 200 includes a slide rod 210 that slides through the four corners of the top of the length measuring instrument body 100. A placement plate 220 is fixed to the top of the slide rod 210, and a groove 230 is opened through the middle of the top of the placement plate 220.
[0031] Please refer to it again. Figure 2 A connecting rod 240 is fixed in the middle between the two sides of the slide groove 230, and a slider 250 slides symmetrically on the outer side wall of the connecting rod 240.
[0032] Please refer to it again. Figure 2 A connecting post 251 is fixed at the bottom center of the slider 250, a clamping block 260 is fixed at the top of the slider 250, a mounting bracket 270 is fixed at the bottom of the placement plate 220, a drive motor 280 is fixed at the bottom center of the inner side of the mounting bracket 270, a turntable 290 is fixed at the end of the output shaft of the drive motor 280, and a spiral groove 291 is opened on the top of the turntable 290.
[0033] In summary, by starting the drive motor 280, the turntable 290 is rotated, causing the spiral groove 291 to rotate. This causes the connecting column 251 to move inside the spiral groove 291, gradually moving the connecting column 251 towards the center of the turntable 290. This causes the slider 250 to slide outside the connecting rod 240, allowing the two sliders 250 to move the clamping block 260 closer together, thus fixing the standard part. This avoids the need for manual support, prevents the standard part from shaking during measurement, prevents affecting measurement accuracy, and improves the practicality of the device.
[0034] Please refer to it again. Figure 2 The slider 250 is located inside the groove 230, and the two sides of the slider 250 are in contact with the two sides of the groove 230.
[0035] Please refer to it again. Figure 3 There are two spiral grooves 291, and the two spiral grooves 291 are centrally symmetrical.
[0036] Please refer to it again. Figure 3 The connecting post 251 is located inside the spiral groove 291, and the input end of the drive motor 280 is electrically connected to the output end of the external power supply.
[0037] Please refer to it again. Figure 4The adjustment mechanism 300 includes fixed seats 310 symmetrically fixed to the top of the length measuring instrument body 100. A bidirectional screw 320 is rotatably driven between the opposite sides of the two fixed seats 310. Handwheels 321 are fixed at both ends of the bidirectional screw 320. A limit rod 330 is fixed at the bottom between the opposite sides of the two fixed seats 310. A movable seat 340 is symmetrically screwed to the outer wall of the bidirectional screw 320 by threads. A connecting rod 350 is rotatably driven inside the movable seat 340. A connecting seat 360 is symmetrically fixed to the bottom of the placement plate 220.
[0038] Please refer to it again. Figure 4 The movable seat 340 slides symmetrically on the outside of the limiting rod 330, and one end of the connecting rod 350 rotates inside the connecting seat 360.
[0039] In summary, by rotating the handwheel 321, the bidirectional screw 320 is driven to rotate, and the limiting rod 330 limits the moving seat 340. When the bidirectional screw 320 rotates, the moving seat 340 moves away from each other outside the limiting rod 330, thereby causing the connecting rod 350 to deflect in the vertical direction, raising the connecting seat 360, and thus raising the placement plate 220. This places the standard part at the measuring position of the length measuring instrument body 100, making it easy to adjust according to the shape of the object, ensuring that the object is always at the measuring position of the length measuring instrument body 100, and improving the applicability of the device.
[0040] Specifically: The measuring structure components of the length measuring instrument body 100 have been described in the comparative document and will not be repeated here.
[0041] In practical use, when calibrating, those skilled in the art place the standard part on the placement plate 220, start the drive motor 280 to rotate the turntable 290, causing the spiral groove 291 to rotate. This causes the connecting post 251 to move inside the spiral groove 291, gradually moving the connecting post 251 towards the center of the turntable 290. This causes the slider 250 to slide outside the connecting rod 240, bringing the two sliders 250 and the clamping block 260 closer together to fix the standard part. Then, turn the handwheel 321. The bidirectional screw 320 is driven to rotate, and the moving seat 340 is limited by the limiting rod 330. When the bidirectional screw 320 rotates, the moving seat 340 moves away from each other outside the limiting rod 330, thereby causing the connecting rod 350 to deflect in the vertical direction, raising the connecting seat 360, and thus raising the placement plate 220, so that the standard part is located at the measuring position of the length measuring instrument body 100. The length measuring instrument body 100 is used to measure the standard part, and after obtaining the error value, the length measuring instrument body 100 is calibrated according to the error value.
[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A length measuring instrument calibration device for easy tool fixing, characterized in that: The device includes a length measuring instrument body (100), a fixing mechanism (200), and an adjusting mechanism (300). The fixing mechanism (200) is located on the top of the length measuring instrument body (100), and the adjusting mechanism (300) is located on the top of the length measuring instrument body (100) and connected to the bottom of the fixing mechanism (200). The fixing mechanism (200) includes slide rods (210) that slide through the four corners of the top of the length measuring instrument body (100). A placement plate (220) is fixed to the top of the slide rods (210), and a groove (230) is formed through the center of the top of the placement plate (220). A connecting rod (240) is fixed in the middle between the two sides of the slide (230). A slider (250) slides symmetrically on the outer side wall of the connecting rod (240). A connecting column (251) is fixed in the middle bottom of the slider (250). A clamping block (260) is fixed in the top of the slider (250). A mounting bracket (270) is fixed in the bottom of the placement plate (220). A drive motor (280) is fixed in the middle bottom inner side of the mounting bracket (270). A turntable (290) is fixed in the end of the output shaft of the drive motor (280). A spiral groove (291) is opened in the top of the turntable (290).
2. The length measuring instrument calibration device for easy tool fixing according to claim 1, characterized in that: The slider (250) is located inside the groove (230), and the two sides of the slider (250) are in contact with the two sides of the groove (230).
3. The length measuring instrument calibration device for easy tool fixing according to claim 1, characterized in that: Two spiral grooves (291) are provided, and the two spiral grooves (291) are centrally symmetrical.
4. The length measuring instrument calibration device for easy tool fixing according to claim 1, characterized in that: The connecting post (251) is located inside the spiral groove (291), and the input end of the drive motor (280) is electrically connected to the output end of the external power supply.
5. The length measuring instrument calibration device for easy tool fixing according to claim 1, characterized in that: The adjustment mechanism (300) includes a fixed base (310) symmetrically fixed to the top of the length measuring instrument body (100), a bidirectional screw (320) rotatably passing through the opposite sides of the two fixed bases (310), a handwheel (321) fixed at both ends of the bidirectional screw (320), a limit rod (330) fixed at the bottom between the opposite sides of the two fixed bases (310), a movable seat (340) symmetrically screwed to the outer wall of the bidirectional screw (320) by threads, a connecting rod (350) rotatably rotating inside the movable seat (340), and a connecting seat (360) symmetrically fixed to the bottom of the placement plate (220).
6. The length measuring instrument calibration device for easy tool fixing according to claim 5, characterized in that: The movable seat (340) slides symmetrically on the outside of the limiting rod (330), and one end of the connecting rod (350) rotates inside the connecting seat (360).