A high-precision circular hole self-centering multi-function marking ruler

Abstract

The invention discloses a multifunctional scribing ruler capable of achieving high-precision circular hole self-centering. The multifunctional scribing ruler comprises locating assemblies, a centeringassembly and a scribing assembly, wherein the scribing assembly is mounted on a central rotating shaft of the centering assembly; the locating assemblies are symmetrically mounted on the centering assembly; an included angle among the locating assemblies is 120 degrees; the locating assembly comprises an upper bottom plate I, a lower bottom plate I, the central rotating shaft, an upper bottom plate II and a lower bottom plate II; the upper bottom plate I, the lower bottom plate I, the upper bottom plate II and the lower bottom plate II are parallelly arranged at the lower part of the centralrotating shaft in a sleeving manner and rotate along with the central rotating shaft; the upper bottom plate II and the lower bottom plate II are positioned between the upper bottom plate I and the lower bottom plate I; the locating assemblies comprise supporting tables, supporting rods and guide shafts; one ends of the supporting rods are fixedly connected with the supporting tables; the other ends of the supporting rods penetrate through the guide shafts and are hinged between the upper bottom plate II and the lower bottom plate II; and the guide shafts are mounted between the upper bottom plate I and the lower bottom plate I. The multifunctional scribing ruler is reasonable in structure and simple in operation, and has the advantage that division and scribing precision is high.

Description

technical field [0001] The invention belongs to the technical field of marking measuring tools, in particular to a high-precision circular hole self-centering multifunctional marking ruler. Background technique [0002] During the machining process, parts often need to be positioned at the center of the machined inner hole, and the circumferential line is drawn on the end face and equally divided. At present, the measuring tools used in the machining industry to position the center of holes with different diameters to draw circumferential lines and equally divide them have problems such as low marking accuracy, inconvenient operation, unreasonable structure, small expansion range of support rods, poor machining processability, and high price. Expensive and other issues, there is no ideal marking measuring tool to meet the needs of machining. Contents of the invention [0003] The invention provides a high-precision circular hole self-centering multi-function marking ruler...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a high-precision circular hole self-centering multi-function marking ruler, which allows the user to quickly locate the hole center of the part hole and accurately perform the marking operation, and solves the technical problems of the existing marking tools such as low precision

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