Flatness checking device and method of using the same

Abstract

The invention discloses a flatness tester and the using method for the tester. The tester is provided with a seat tube, at sides of which lugs are provided, on the lugs, adjusting bolts are provided through internal threads; in the seat tube, a shaft rod is provided, which is fixed in the seat tube by a bearing; the upper end of the shaft rod is provided with a balance arm that extends toward two sides; the balance arm is vertical to the shaft rod; the bottom of the shaft rod is a flat guideway with high flatness; the guide way is vertical to the shaft rod; on the guideway, a measuring instrument that can slide on the guideway is mounted. By the adjusting bolts, the central line of the shaft rod can be adjusted to coincide with a reference line, so that the guideway is parallel with an ideal plane; moving the measuring instrument to different locations on the guideway and rotating the shaft rod can measure the difference from points on the circumferences of different radiuses to the guideway, hence calculate the flatness of the measured plane. The invention has few components, simple structure, and low cost. By measuring flatness through measuring the distance difference from points on the plane to the guideway, so long that the flatness of the guideway is high, the accuracy of the measuring instrument is high, the accuracy of the flatness measurement will be very high.

Description

technical field [0001] The present invention relates to a device for detecting the flatness of a plane, and a method for detecting the flatness of a plane using such a device. technical background [0002] In the construction of large-scale equipment such as ships, some large-scale equipment needs to be installed on the platform of large-scale seating frames with high flatness requirements. The bottoms of these large-scale seating frames are usually welded to the hull structure or the bottom of the seat, which can be welded to the platform. For plane processing, the platform can also be plane processed before welding. After welding, to carry out plane processing, large-scale machining equipment needs to be transported to the construction site for processing, which can ensure the flatness of the large-scale seating platform, but it is time-consuming and laborious to transport large-scale processing equipment to the construction site. However, after flat processing the seat f...

AI Technical Summary

Problems solved by technology

Bubble level, mainly through visual inspection, its measurement accuracy is not high, and it cannot be used in the case of high accuracy requirements

Using a standard plate to measure the flatness of a large stand platform requires a large standard plate. The area of ​​the plate should be closer to the area of ​​the platform, and it should not be too small. Once it is too small, the overall flatness of the platform cannot be measured. To make a large standard platform, the production process is cumbersome and expensive; at the same time, the large standard platform is easily deformed, and it needs to be used and stored with great care

Although the laser measuring instrument has high precision, its equipment is expensive, the operation is complicated, the requirements for the operator are high, and it is time-consuming to measure a large-sized plane

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