Anti-deviation displacement measuring and controlling instrument calibration reference device

Abstract

The application discloses a kind of anti-deviation displacement measurement and control instrument calibration reference device, belong to the field of measurement and control instrument calibration, the reference device includes pedestal, displacement platform, instrument mounting frame, displacement measurement and control instrument body and two anti-deviation mechanisms;The upper surface of pedestal is equipped with first-level reference installation plane, displacement platform is connected on the first-level reference installation plane by anti-deviation mechanism;Instrument mounting frame is connected on the upper surface of slider of displacement platform by anti-deviation mechanism;Anti-deviation mechanism includes at least two positioning pins and multiple screws.By the anti-deviation mechanism of "positioning pin and screw", pedestal, displacement platform and instrument mounting frame can be rigidly connected as a whole, effectively resist the influence of vibration and stress, fundamentally prevent micron-level relative displacement between components, eliminate the translational and rotational degrees of freedom between displacement platform and pedestal, instrument mounting frame and displacement platform, and ensure the long-term stability of calibration reference.

Description

Technical Field

[0001] This application relates to the field of calibration technology for measurement and control instruments, specifically a calibration reference device for displacement measurement and control instruments that prevents offset. Background Technology

[0002] Displacement measurement and control instruments play a crucial role in quality inspection and control in fields such as machinery manufacturing, aerospace, and precision machining. To ensure the accuracy of their measurement data, they need to be calibrated regularly using calibration reference devices.

[0003] Existing calibration devices typically consist of a precision displacement platform (such as a lead screw slide) and a bracket for mounting the sensor to be calibrated. However, in actual use, the connection rigidity between the base and the platform, and between the platform and the instrument to be calibrated, is insufficient. Under repeated operation or external vibration, small relative displacements or deformations can easily occur, causing changes in the calibration reference and introducing errors.

[0004] Therefore, this application provides a calibration reference device for displacement measurement and control instruments that prevents deviation, in order to solve the above problems. Utility Model Content

[0005] This application provides a calibration reference device for displacement measurement and control instruments that prevents offset, aiming to solve the problems mentioned in the background art, such as insufficient rigidity in the connection between the base of the existing calibration device and the precision displacement platform, and between the precision displacement platform and the support of the sensor to be calibrated. Long-term repeated operation can easily lead to loosening of the connection parts, and small relative displacement or elastic deformation due to external vibration, which in turn can cause calibration reference offset, introduce systematic errors, or even cause calibration results to fail.

[0006] To achieve the above objectives, this application provides the following technical solution: a displacement measurement and control instrument calibration reference device with anti-offset mechanism, comprising a base, a displacement platform, an instrument mounting frame, a displacement measurement and control instrument body, and two anti-offset mechanisms; the upper surface of the base is provided with a first-level reference mounting plane, and the displacement platform is connected to the first-level reference mounting plane through the anti-offset mechanisms; the instrument mounting frame is connected to the upper surface of the slider of the displacement platform through the anti-offset mechanisms; the anti-offset mechanism includes at least two positioning pins fixedly disposed on the first-level reference mounting plane and the top of the displacement platform, and multiple screws for mounting the displacement platform on the base or for mounting the instrument mounting frame on the displacement platform; the bottom of both the displacement platform and the instrument mounting frame is provided with pin holes for matching the positioning pins. At least two positioning pins in the anti-offset mechanism are respectively fixed on the first-level reference mounting plane and the top of the displacement platform, and the pin holes at the bottom of the displacement platform and the instrument mounting frame match the positioning pins to achieve precise positioning; multiple screws mount the displacement platform on the base and the instrument mounting frame on the displacement platform, and through the positioning action of the positioning pins and the tightening action of the screws, the components form a rigid connection whole.

[0007] Preferably, to facilitate the insertion of the positioning pin into the pin hole, the positioning pin is a tapered pin. This significantly reduces the difficulty of inserting the positioning pin into the pin hole at the bottom of the displacement platform and the instrument mounting bracket, improves installation efficiency, and ensures positioning accuracy, laying the foundation for subsequent rigid connection.

[0008] Preferably, for ease of installation: both the displacement platform and the instrument mounting bracket have through holes for screws to pass through, and both the first-level reference mounting plane and the upper surface of the displacement platform slider have screw holes for fitting the screws. This provides mounting channels and connection points for the screws, simplifying the installation operations of the displacement platform and base, and the instrument mounting bracket and displacement platform, thus improving assembly convenience and connection reliability.

[0009] Preferably, the instrument mounting bracket is an L-shaped rigid support, with a second-level reference mounting plane on its vertical surface for mounting the displacement measurement and control instrument body to be calibrated. The displacement measurement and control instrument body is mounted on the second-level reference mounting plane by bolts, and the second-level reference mounting plane has an array of standard screw holes for fitting the bolts. This provides a stable mounting carrier for the displacement measurement and control instrument body, and the second-level reference mounting plane ensures the accuracy of instrument installation.

[0010] Preferably, the displacement platform is a high-precision ball screw slide. It provides high-precision, controllable micro-displacement output for the calibration process, ensuring the accuracy of the displacement reference and providing a reliable foundation for the precise calibration of the displacement measurement and control instrument itself.

[0011] Preferably, the base is made of cast iron. It possesses high rigidity and stability, providing a solid support foundation for the entire calibration reference device, reducing the impact of external factors on the overall stability of the device, and ensuring calibration accuracy.

[0012] Preferably, to ensure the base is level, a leveling mechanism is also included to adjust the level of the base. This mechanism includes fixed plates fixedly connected to both sides and the front of the base, and a screw threaded through and inserted into the fixed plates. A handle is fixedly connected to the upper end of the screw, and a universal level is fixedly connected to the base. Through this leveling mechanism, the level of the base can be conveniently and accurately adjusted, ensuring the base is in a level position and preventing calibration reference shift due to base tilt, thus further guaranteeing calibration accuracy.

[0013] This application uses a "locating pin and screw" anti-offset mechanism to rigidly connect the base, displacement platform and instrument mounting bracket into a whole, effectively resisting the effects of vibration and stress, fundamentally preventing micron-level relative displacement between components, eliminating translational and rotational degrees of freedom between the displacement platform and the base, and between the instrument mounting bracket and the displacement platform, and ensuring the long-term stability of the calibration benchmark.

[0014] This application uses a leveling mechanism to conveniently and accurately adjust the level of the base, ensuring that the base is in a horizontal position and preventing the calibration reference from shifting due to base tilt, thus further guaranteeing calibration accuracy. Attached Figure Description

[0015] Figure 1 A schematic diagram of a calibration reference device for a displacement measurement and control instrument that prevents offset. Figure 2 Exploded view of the structure connecting the base and the displacement platform; Figure 3 An exploded view of the structure connecting the instrument mounting bracket and the slider of the displacement platform.

[0016] In the picture: 1. Base; 2. Displacement platform; 3. Instrument mounting frame; 4. Displacement measurement and control instrument body; 5. Anti-deviation mechanism; 51. Positioning pin; 52. Screw; 6. Horizontal adjustment mechanism; 61. Fixing plate; 62. Screw; 63. Plum blossom handle; 64. Universal level. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] Example 1 This embodiment provides a calibration reference device for displacement measurement and control instruments to prevent offset, such as... Figure 1-3 As shown, the reference device includes a base 1, a displacement platform 2, an instrument mounting bracket 3, a displacement measurement and control instrument body 4, and two anti-offset mechanisms 5. The upper surface of the base 1 has a first-level reference mounting plane, and the displacement platform 2 is connected to this first-level reference mounting plane via the anti-offset mechanisms 5. The instrument mounting bracket 3 is connected to the upper surface of the slider of the displacement platform 2 via the anti-offset mechanisms 5. The anti-offset mechanism 5 includes at least two positioning pins 51 fixedly disposed on the first-level reference mounting plane and the top of the displacement platform 2, and multiple screws 52 for mounting the displacement platform 2 on the base 1 or for mounting the instrument mounting bracket 3 on the displacement platform 2. The bottom of both the displacement platform 2 and the instrument mounting bracket 3 has pin holes for mating with the positioning pins 51. Through the anti-offset mechanism 5 consisting of positioning pins 51 and screws 52, the base 1, displacement platform 2, and instrument mounting bracket 3 are rigidly connected as a whole, effectively resisting vibration and stress effects, fundamentally preventing micron-level relative displacement between components, eliminating translational and rotational degrees of freedom between the displacement platform 2 and the base 1, and between the instrument mounting bracket 3 and the displacement platform 2, ensuring the long-term stability of the calibration reference. At least two positioning pins 51 in the anti-deviation mechanism 5 are fixed to the first-level reference mounting plane and the top of the displacement platform 2 respectively. The pin holes at the bottom of the displacement platform 2 and the instrument mounting frame 3 are matched with the positioning pins 51 to achieve precise positioning. Multiple screws 52 install the displacement platform 2 on the base 1 and the instrument mounting frame 3 on the displacement platform 2. Through the positioning action of the positioning pins 51 and the fastening action of the screws 52, the components form a rigid connection whole.

[0019] To facilitate the insertion of the positioning pin 51 into the pin hole: the positioning pin 51 is a tapered pin. This significantly reduces the difficulty of inserting the positioning pin 51 into the bottom pin hole of the displacement platform 2 and the instrument mounting bracket 3, improving installation efficiency while ensuring positioning accuracy, laying the foundation for subsequent rigid connection. The positioning pin 51 adopts a tapered pin structure, and its outer surface is tapered. When inserted into the pin hole, the tapered structure guides the positioning pin 51 to gradually align with the pin hole, allowing for smooth insertion without precise alignment, reducing adjustment time during installation.

[0020] For ease of installation: both the displacement platform 2 and the instrument mounting bracket 3 have through holes for screws 52 to pass through, and both the first-level reference mounting plane and the upper surface of the slider of the displacement platform 2 have threaded holes for fitting the screws 52. This provides installation channels and connection points for the screws 52, simplifying the installation of the displacement platform 2 with the base 1 and the instrument mounting bracket 3 with the displacement platform 2, improving assembly convenience and connection reliability. The through holes on the displacement platform 2 and the instrument mounting bracket 3 allow screws 52 to pass through, and the threaded holes on the first-level reference mounting plane and the upper surface of the slider of the displacement platform 2 are adapted to fit the screws 52. During installation, the screws 52 are passed through the through holes and screwed into the corresponding threaded holes to complete the fixed connection between the components.

[0021] The instrument mounting bracket 3 is an L-shaped rigid support. Its vertical surface has a second-level reference mounting plane for mounting the displacement measurement and control instrument body 4 to be calibrated. The displacement measurement and control instrument body 4 is mounted on the second-level reference mounting plane with bolts. The second-level reference mounting plane has an array of standard screw holes for fitting the bolts. This provides a stable mounting platform for the displacement measurement and control instrument body 4, and the second-level reference mounting plane ensures the accuracy of the instrument installation. The instrument mounting bracket 3 is an L-shaped rigid support, and its vertical surface has a second-level reference mounting plane as the mounting reference for the displacement measurement and control instrument body 4. The displacement measurement and control instrument body 4 is connected to the array of standard screw holes on the second-level reference mounting plane with bolts, achieving a stable and precise installation.

[0022] The displacement platform 2 is a high-precision ball screw slide. It provides high-precision, controllable micro-displacement output for the calibration process, ensuring the accuracy of the displacement reference and providing a reliable foundation for the precise calibration of the displacement measurement and control instrument body 4. The displacement platform 2 adopts a high-precision ball screw slide structure, which converts rotational motion into linear motion of the slider through the precision transmission of the ball screw, realizing precise control and output of micro-displacement and providing a stable displacement reference for calibration.

[0023] The base 1 is made of cast iron. It possesses high rigidity and stability, providing a stable support foundation for the entire calibration reference device, reducing the impact of external factors on the overall stability of the device, and ensuring calibration accuracy. Cast iron has good rigidity, resistance to deformation, and stability, effectively bearing the weight of components such as the displacement platform 2 and the instrument mounting bracket 3, suppressing its own deformation, and providing a stable support platform for the entire device.

[0024] Example 2 Unlike Embodiment 1, to ensure the base 1 is level, a leveling mechanism 6 is also included to adjust the level of the base 1. The leveling mechanism 6 includes fixed plates 61 fixedly connected to both sides and the front of the base 1, and a screw 62 threaded through and inserted into the fixed plates 61. A handle 63 is fixedly connected to the upper end of the screw 62, and a universal level 64 is fixedly connected to the base 1. Through the leveling mechanism 6, the level of the base 1 can be conveniently and accurately adjusted to ensure it is in a level position, preventing calibration reference deviation due to base 1 tilting and further ensuring calibration accuracy. The fixed plates 61 of the leveling mechanism 6 are fixed to both sides and the front of the base 1, and the screw 62 is threaded through and inserted into the fixed plates 61. Rotating the handle 63 moves the screw 62 up and down. By adjusting the height of the screw 62 at different positions, the level of the base 1 is adjusted, while simultaneously observing the universal level 64 on the base 1 until the universal level 64 indicates that the base 1 is in a level position.

[0025] It should be noted that many of the standard parts used in this application are available on the market, while non-standard parts can be specially customized. The connection method used in this application is also a very common method in the mechanical field, and will not be described in detail here.

[0026] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A calibration reference device for a displacement measurement and control instrument that prevents offset, characterized in that: It includes a base (1), a displacement platform (2), an instrument mounting frame (3), a displacement measurement and control instrument body (4), and two anti-deviation mechanisms (5); The upper surface of the base (1) is provided with a first-level reference mounting plane, and the displacement platform (2) is connected to the first-level reference mounting plane through an anti-offset mechanism (5); The instrument mounting bracket (3) is connected to the upper surface of the slider of the displacement platform (2) through the anti-offset mechanism (5); The anti-deviation mechanism (5) includes at least two positioning pins (51) fixedly disposed on the first-level reference mounting plane and the top of the displacement platform (2), and a plurality of screws (52) for mounting the displacement platform (2) on the base (1) or for mounting the instrument mounting bracket (3) on the displacement platform (2). The bottom of the displacement platform (2) and the instrument mounting bracket (3) are provided with pin holes for matching the positioning pins (51).

2. The displacement measurement and control instrument calibration reference device for preventing offset as described in claim 1, characterized in that: The positioning pin (51) is a tapered pin.

3. The displacement measurement and control instrument calibration reference device for preventing offset as described in claim 1, characterized in that: Both the displacement platform (2) and the instrument mounting bracket (3) are provided with through holes for screws (52) to pass through, and both the first-level reference mounting plane and the upper surface of the slider of the displacement platform (2) are provided with screw holes for matching the screws (52).

4. The displacement measurement and control instrument calibration reference device for preventing offset as described in claim 1, characterized in that: The instrument mounting bracket (3) is an L-shaped rigid support. A second-level reference mounting plane is provided on its vertical surface for mounting the displacement measurement and control instrument body (4) to be calibrated. The displacement measurement and control instrument body (4) is mounted on the second-level reference mounting plane by bolts. A standard screw hole array for matching the bolts is provided on the second-level reference mounting plane.

5. The calibration reference device for the displacement measurement and control instrument with anti-deviation capability according to claim 1, characterized in that: The displacement platform (2) is a high-precision ball screw slide.

6. The calibration reference device for the displacement measurement and control instrument with anti-deviation capability according to claim 1, characterized in that: The base (1) is made of cast iron.

7. The displacement measurement and control instrument calibration reference device for preventing offset as described in any one of claims 1-5, characterized in that: It also includes a leveling mechanism (6) for adjusting the level of the base (1). The leveling mechanism (6) includes a fixed plate (61) fixedly connected to both sides and the front side of the base (1) and a screw (62) threaded through and inserted into the fixed plate (61). A plum blossom handle (63) is fixedly connected to the upper end of the screw (62), and a universal level (64) is fixedly connected to the base (1).

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