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Self-positioning high-precision aperture measuring device

A measuring device and self-positioning technology, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of poor precision, complex structure, low efficiency, etc., and achieve the effect of fast measurement and correctness

Active Publication Date: 2020-01-07
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned patents have improved the detection device, the structure is complex, and there are problems of low efficiency and poor precision in measuring large diameter holes (100mm-300mm) of metal parts

Method used

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  • Self-positioning high-precision aperture measuring device
  • Self-positioning high-precision aperture measuring device
  • Self-positioning high-precision aperture measuring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A self-positioning high-precision aperture measurement device includes a bracket 1, a coarse adjustment knob 2, an adjustable support arm 4, a measuring rod 5, and a self-positioning structure 6. There are two adjustable support arms 4 and two measuring rods 5, and there are two Both ends of 1 are respectively provided with an adjustable support arm 4 and a measuring rod 5, each adjustable support arm 4 is provided with a self-positioning structure 6, and a thick knob is provided on the shell of the support 1. The bracket 1 is provided with a chute; the coarse adjustment knob 2 is located in the center of the bracket 1, and below the coarse adjustment knob 2 is a high-precision straight / helical gear 8, which can be unlocked and locked by pulling it up and pressing it down.

[0027] An electronic module can also be installed on the shell of the bracket 1, which can realize μ-level high-precision distance measurement, and can display the measured value and power percentage...

Embodiment 2

[0030] Such as figure 1 As shown, a self-positioning high-precision aperture measuring device includes a bracket 1, a coarse adjustment knob 2, an adjustable support arm 4, a measuring rod 5, and a self-positioning structure 6. The device utilizes damping rods in the horizontal and vertical directions and The coordinated movement of the universal ball reaches the state of force balance, ensuring that the measured length direction is located in the diameter direction of the radial tangent circle. The linear grating scale is used to achieve fast and accurate measurement of the aperture. This device needs to be used in conjunction with an outer micrometer.

[0031] Coarse adjustment knob 2 includes: coarse adjustment knob 2, high-precision straight / helical gear 8;

[0032] The adjustable support arm 4 includes: the adjustable support arm 4, the straight / helical rack 7 of the support arm;

[0033] The self-positioning structure 6 includes: a horizontal damping rod 10, a horizonta...

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Abstract

The application, which belongs to the field of machine manufacturing, especially relates to a self-positioning high-precision aperture measuring device that is capable of realizing a force balance state by utilizing coordinated movement of a telescopic damping rod and a universal ball in horizontal and vertical directions. The measuring device comprises a bracket, a coarse adjustment knob, adjustable support arms, measuring rods and self-positioning structures. Two adjustable support arms and two measuring rods are arranged; one adjustable support arm and one measuring rod are arranged at eachof two ends of the bracket; and one self-positioning structure is arranged outside each adjustable support arm. The coarse adjustment knob is arranged on a bracket housing. Since damping rods are distributed symmetrically in the horizontal direction and the vertical direction and universal wheels are arranged at the ends of the damping rods, rapid self-positioning is realized based on the force balance principle; and the straight line formed by the measuring rods of the device coincides with one diameter of a radial tangent circle of a measured hole, so that the correctness of a measurement result is guaranteed.

Description

technical field [0001] The application belongs to the field of mechanical manufacturing, and in particular relates to a self-positioning high-precision aperture measuring device that automatically achieves a force balance state by utilizing the coordinated movement of a retractable damping rod and a universal ball in the horizontal and vertical directions. Background technique [0002] Hole features widely exist on CNC machined metal parts, especially on aircraft metal structural parts. Usually, the general small straight holes (diameter less than 100mm) with precision lower than H9 usually use vernier calipers to measure the hole diameter, and H7-H9 high-precision small straight holes Holes (diameter less than 100mm) are mostly measured by inner micrometers, special plug gauges, and measuring machines, and for holes within the diameter range of 100mm-300mm, manual measurement is usually carried out with a dial gauge with a lever. When adjusting the position of the lever, it ...

Claims

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Application Information

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IPC IPC(8): G01B11/12
CPCG01B11/12
Inventor 周佳唐林高锦焜杨京京郭根根
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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