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Outline camera, superlarge-diameter rotary workpiece noncontact diameter measuring instrument and noncontact rotary workpieece measuring method

A camera and profile technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of large measurement errors, measurement speed reduction, etc., and achieve high precision, good effect, and accurate measurement.

Pending Publication Date: 2018-10-26
ZHENGZHOU MERCURY ELECTRONICS TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The laser displacement sensor method uses two relative sensors to measure the distance on the surface of the workpiece respectively. When the axis of the sensor does not coincide with the diameter line of the workpiece, a large measurement error will occur. To reduce this error, the sensor needs to perform precise mechanical tracking movement. , the measurement speed is greatly reduced

Method used

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  • Outline camera, superlarge-diameter rotary workpiece noncontact diameter measuring instrument and noncontact rotary workpieece measuring method
  • Outline camera, superlarge-diameter rotary workpiece noncontact diameter measuring instrument and noncontact rotary workpieece measuring method
  • Outline camera, superlarge-diameter rotary workpiece noncontact diameter measuring instrument and noncontact rotary workpieece measuring method

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Embodiment 1

[0049] A profile camera, see Figure 1 to Figure 11 , the profile camera includes a parallel light source generator 10 installed in the housing, a profile camera mounted on the housing and a control processor for photoelectric signal conversion, the profile camera includes an imaging lens group 13 installed on the housing 14, an image Sensor 15, the input end of the control processor is connected to the image sensor 15, and its output end is connected to the image processor and the display to realize data processing and display of the surface profile of the workpiece to be measured; Intersect to form high-brightness arcs, so that the arcs pass through the imaging lens group and focus on the rectangular photosensitive surface of the image sensor to form a real image. The rectangular photosensitive surface of the image sensor is provided with a center line as a measurement reference line. circuit connection.

[0050] The optical axis of the imaging lens group is the A line, the...

Embodiment 2

[0075] Embodiment 2: The principle of this embodiment is the same as that of Embodiment 1. The specific difference is that the contour camera and its measurement method can be applied to the field of side measurement of lathe parts. The parallel light source is projected onto the cylindrical surface of the workpiece, and the contour camera measures the workpiece Whether the outer diameter of the workpiece is qualified.

Embodiment 3

[0076] Embodiment 3: The principle of this embodiment is the same as that of Embodiment 1, except that the specific difference lies in that the workpiece to be measured does not move while the measuring frame moves during measurement.

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Abstract

The invention relates to the field of high-precision noncontact measurement, in particular to an outline camera mounted on a sensor, a superlarge-diameter rotary workpiece noncontact diameter measuring instrument and a noncontact rotary workpieece measuring method and aims to solve problems of low measurement precision, slowness in measurement and poor stability of measurement equipment in an existing noncontact measurement technique. The outline camera comprises a parallel light source generator, an outline camera body and a control processor, the parallel light source generator is mounted ina shell, the outline camera body is mounted on the shell, and the control processor is used for photoelectric signal conversion. An outline camera output end is connected with an image processor anda display to realize tested workpiece surface outline data processing and displaying. Planar beams emitted by the parallel light source generator are intersected with the workpiece cylindrical surfaceto form high-brightness arc lines. Measurement results are accurate, inclination and position errors of workpieces in a measurement area can be eliminated, and accuracy and quickness in external diameter measurement of large-diameter workpieces are achieved.

Description

technical field [0001] The invention relates to the field of high-precision non-contact workpiece measurement, in particular to a profile camera, a matching non-contact caliper measuring instrument for a super-large-diameter rotary workpiece, and a non-contact rotary measurement method. Background technique [0002] Non-contact measurement refers to accurate measurement without contact with the measured object, and its measurement accuracy can reach the order of μm. The non-contact caliper uses the CCD to collect the outline image of the measured object formed by the imaging lens group, and then cooperates with the mobile platform, uses the principle of image analysis, and processes the image signal through the computer to measure the precise geometric dimensions of the scientific research and production parts, and The analysis of CPK value can be carried out. In the field of industrial manufacturing, it involves non-contact diameter measurement of many large-scale rotating...

Claims

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Application Information

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IPC IPC(8): G01B11/10
CPCG01B11/105
Inventor 蔡仲志张恒张明阳杨红霞闫秋云
Owner ZHENGZHOU MERCURY ELECTRONICS TECH
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