High-precision detection instrument and method for measuring perpendicularity of large mechanical element

Abstract

The invention discloses a high-precision detection instrument for measuring the perpendicularity of a large mechanical element. The high-precision detection instrument consists of three parts including a displacement sensor device, an information communicating and processing module and an instrument stand; the instrument stand is formed by a base and a support, wherein the support is installed on the base; the displacement sensor device consists of high-precision displacement sensors and the information communicating and processing module; two or a plurality of high-precision displacement sensors are arranged in parallel up and down; and the high-precision displacement sensors are sleeved on the support through sliding seats and are adjustably connected with the support. The method for measuring comprises: step 1, calibrating the perpendicularity of the detection instrument; and step 2, detecting. The instrument has the advantages of simplicity in structure, convenience in operation and use, high automation and digitization degrees, high measurement precision, low instrument manufacturing cost and low measurement cost. The instrument is durable, has a long service life and is low in maintenance cost.

Description

technical field [0001] The invention relates to a detector and a method, in particular to a high-precision detector and a measuring method for measuring the verticality of large-sized mechanical parts. Background technique [0002] For a long time, the verticality detection on some mechanical parts with large size (>2000mm), heavy weight (>1000Kg) and high precision (<0.01mm) has been a difficult problem in the manufacturing process of mechanical equipment. [0003] There are currently three perpendicularity measurement methods such as "three-coordinate measuring machine method", CCD measurement method and dial indicator method. There are practical problems that are difficult to solve for the high-precision measurement of the perpendicularity of large-scale mechanical parts. Among them, the "large-scale three-coordinate measuring machine" can theoretically measure the verticality of large-sized parts, but due to the influence of its measuring head joint arm clearanc...

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Problems solved by technology

[0003] There are currently three perpendicularity measurement methods such as "three-coordinate measuring machine method", CCD measurement method and dial indicator method. There are practical problems that are difficult to solve for the high-precision measurement of perpendicularity of large-scale mechanical parts.

Among them, the "large-scale three-coordinate measuring machine" can theoretically measure the verticality of large-sized parts, but due to the influence of its measuring head joint arm clearance and repeat positioning accuracy, its measurement accuracy is difficult to meet the accuracy requirements of less than 0.02 mm, and , large-scale mechanical parts have large size and heavy weight, and cranes and other lifting equipment are required for mobile adjustment. The use environment of the three-coordinate measuring machine and the space of the instrument itself are often limited; the dial indicator method is a traditional measurement method, and the monitor it uses There are deficiencies in accuracy and digitization; CCD measurement method is a non-contact measurement method, without the above-mentioned shortcomings of three-coordinate measuring machine and dial indicator method, but the operation of CCD measurement method is complicated, the instrument price is high, and the measurement cost is high

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