Alignment tolerance measuring device of obliquely intersected cross joint structure

Abstract

The invention provides an alignment tolerance measuring device of an obliquely intersected cross joint structure. The alignment tolerance measuring device comprises an L-shaped substrate, wherein thesubstrate comprises a vertical section and a horizontal section. The vertical section is provided with an angle ruler and a first positioning ruler, the angle ruler and the first positioning ruler canbe moved and positioned and share the same rotation center, and a first positioning base point and the rotation center are located on the same horizontal line. The vertical section is provided with the first positioning base point, and the first positioning ruler is provided with a first scale pointer. The horizontal section is provided with a vertical second positioning ruler, a horizontal rulerand a third positioning ruler, and when the zero of the second positioning ruler is aligned to a second positioning base point, the upper end of the second positioning ruler and the rotation center are located on the same horizontal line. A vertical second scale pointer is arranged on a third positioning ruler, and a third positioning base point is arranged on the horizontal section. When the zero of the ruler, the second scale pointer and the third positioning base point are aligned, the right end of the ruler and the rotation center are located on the same plumb line. The alignment tolerance measuring device is simple in structure, high in measuring efficiency and good in universality.

Description

technical field [0001] The invention relates to a measuring tool, in particular to an alignment tolerance measuring device of an obliquely intersecting cross joint structure. Background technique [0002] In the side structure of the bottom of the ship, there are three plates obliquely intersecting the cross joint structure of the bottom longitudinal girder, the inner bottom plate, and the inclined top plate of the hopper tank. Structural forms; among them, the oblique intersecting cross joint structure aligned with the center line is the most common, refer to figure 1 , the horizontal plate 100 is arranged horizontally, the inclined plate 101 is obliquely fixed on the horizontal plate 100 , and the vertical plate 102 is vertically fixed on the horizontal plate 100 . Due to the difficulty of precision control in the manufacturing process, it is difficult to ensure that the centerlines are completely aligned, such as figure 2 As shown, its alignment tolerance a is one of t...

AI Technical Summary

Problems solved by technology

[0006] However, since the slant plate is inclined and there are solder fillets after manufacture, it is difficult to measure the value of the upper surface. In most cases, it is still necessary to use an auxiliary clamp

In addition, since the reference positioning line is marked on both sides of the horizontal plate, it is difficult to ensure that the upper and lower marking lines are completely aligned during the marking process, and the alignment of the upper and lower marking positioning lines will also affect the final measurement result, and the The method is cumbersome and the measurement efficiency is not high

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