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Shaped square box
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Shaped square boxes are commonly called non-standard square boxes, not the standard ones. Mainly used for various inspection work, such as the reference plane for precision measurement, the inspection and measurement of various machine tools, the dimensional accuracy of the parts, the deviation of the position, and the precise scribing. The square box is the machine tool, machinery manufacturing, and electronic production. More than 20 products indispensable in the industry. The demand for shaped square boxes is generally required to measure and detect the length of the workpiece.
The special-shaped square box is made according to JB/T3411.56-99 standard. The hardness of the material is HT200. It is suitable for measuring and marking the fixed angle of the workpiece. It is widely used for testing parallelism and perpendicularity of parts and supporting workpieces when marking. It is generally a square or rectangular parallelepiped with the same side length. Various specifications and contour boxes and rectangular tubes can be made according to user requirements.
Shaped square box is mainly used for inspection and scribing of parallelism and verticality of parts. The inspection square box is a cavity cube of a specific six working faces made of cast iron, and one of the working faces has a V-shaped groove. Check the environmental conditions of the square box test: normal temperature, normal humidity.
The working faces of the shaped square box shall be free from rust, scratches, cracks, dents and other defects affecting the metering performance. The non-working surface should be sand-painted and chamfered. There should be signs on the inner wall of the square box, and marked with the size, grade number and manufacturer name.
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