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Processing precision property online measurement device and method for super-heavy lathe

A technology of lathe processing and measuring device, which is applied to metal processing mechanical parts, metal processing equipment, measuring/indicating equipment, etc., can solve the problems of inability to obtain valid data and inapplicable to online measurement of workpieces processed by super-heavy machine tools.

Active Publication Date: 2011-04-06
SUZHOU DEKA TESTING TECH CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

The existing optical measurement methods and equipment are not suitable for on-line measurement of workpieces processed by super-heavy machine tools due to the inability to obtain effective data at the high-speed line cutting speed of the machine tool

Method used

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  • Processing precision property online measurement device and method for super-heavy lathe
  • Processing precision property online measurement device and method for super-heavy lathe
  • Processing precision property online measurement device and method for super-heavy lathe

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Embodiment Construction

[0021] see figure 1 , the on-machine measuring device of the processing accuracy characteristics of the ultra-heavy-duty lathe based on the optical sensing method involved in the present invention passes the laser beam emitted by the semiconductor laser through the converging lens, and then passes through the collimating lens group to obtain the laser beam in the measurement range, that is, before the converging lens. Within the range of 100-500mm on the surface, each length is within the range of 25mm from the waist of the laser beam, and the diameter of the laser beam is less than 40um. The laser beam is reflected by the surface of the workpiece, and the interference light wave components are removed by the filter, and the image is formed by the imaging lens. The frequency range of the light wave transmitted by the filter is consistent with the light wave frequency range of the semiconductor laser used. The laser spot is received by a high-speed linear image sensor. A set ...

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Abstract

The invention discloses a processing precision property online measurement device and a processing precision property online measurement method for a super-heavy lathe. Laser spot images are acquired by using a high-speed linear array image sensor, clear spot images are acquired from a group of acquired spot image sequence by using image recovery technology, sub-pixel central points of the spot images are identified by using correlation of pixel gray between the image sequences, and position information on the surface of a rotary workpiece can be effectively acquired by trigonometric imaging path calculation so that the technical defect that the conventional optical measurement method and the conventional optical measurement device cannot effectively acquire the position information on the surface of the rotary workpiece is overcome. Based on the acquired position information on the surface of the rotary workpiece, the developed measurement device is arranged on the heavy lathe; and after finishing a debugging calibration process, the measurement device can realize online on-site measurement of the processing dimension of the rotary workpiece on the heavy lathe, and meanwhile, themeasurement system also has the function of positioning the processed workpiece.

Description

technical field [0001] The invention belongs to the technical field of performance detection of super-heavy lathes, and relates to a method for on-line detection of surface topography of rotating objects using light as a sensing means, in particular to a method and system for on-machine measurement and evaluation of super-heavy lathe machining accuracy. Background technique [0002] In the processing of super-large workpieces such as aerospace, large-scale mining machinery, large-scale hydropower units, and nuclear power plant equipment, super-heavy-duty machine tools are one of the main processing equipment. Although domestic ultra-heavy machine tools are in the development stage, there have been reports of export of molded products. During the development and use of super-heavy machine tools, the measurement of the machining dimensions of super-large workpieces is a quality control problem. This is because during the processing of large workpieces, the workpiece is in a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/24
Inventor 张维光赵宏姜涛
Owner SUZHOU DEKA TESTING TECH CO LTD
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