Marking device and method used for steel tube elbow

Abstract

The invention discloses a marking device and method used for a steel tube elbow. The marking device comprises two positioning base assemblies and a marking ruler, wherein each positioning base assembly comprises a base cushion block, a limiting plate, a T-shaped block and a fastening bolt, the base cushion block is equipped with a V-shaped slot for placing a steel tube and a T-shaped slot in the perpendicular direction, the limiting plate is connected with the T-shaped block and is mounted in the T-shaped slot, and can move up and down along the T-shaped slot; the marking ruler comprises a fastening screw cap, a left ruler and a right ruler, the left end of the right ruler is connected with the right end of the left ruler, the fastening screw cap is used for fixing an angle position formedby the left ruler and the right ruler, and length scales for measuring a marking distance are arranged on the ruler edge of the marking ruler; during marking operation, the steel tube elbow is horizontally placed in the V-shaped slots of the two base cushion blocks, so that the limiting plates move along the T-shaped slots until the limiting plates are in contact with the steel tube elbow and arefixed; and the marking ruler is adjacent to the limiting plates, the fastening screw cap is screwed up, scales on the marking ruler are read, and blanking dimensions are marked. The marking device has the advantages of being simple in structure, convenient to use, high in reliability, wide in range of application and the like.

Description

technical field [0001] The invention relates to the manufacture of marine low-speed diesel engines, in particular to a marking device and method for steel pipe bending, and belongs to the technical field of diesel engine manufacture. Background technique [0002] In the production of marine low-speed diesel engine pipe fittings, many pipes in various piping systems need to be bent, such as lubricating oil system piping, cooling water system piping, fuel system piping, air system piping, etc. In the process of bending various steel pipes, because the pipe bending machine needs to clamp the pipe with the clamping die, and the clamping die has a limit on the shortest length, so when the length of some steel pipes is shorter than the clamping die length, before bending The blank needs to have a length allowance. After the steel pipe is bent, the excess length is cut and removed according to the design size. [0003] The current method for scribing and blanking steel pipe bends ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of cumbersome scribing and cutting operations, low precision and low work efficiency in the existing steel pipe bending process, the present invention provides a scribing device and method for steel pipe bending, which can achieve The effect of improving the reliability of scribing, improving the accuracy of scribing, reducing the difficulty of operation and improving work efficiency

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