Three-coordinate line drawing device

Abstract

The invention relates to a three-coordinate line drawing device, which comprises a base plate, an upright post, a line drawing cantilever, a main slide plate, a main line drawing head, a sub slide plate and a sub line drawing head, wherein the upright post is vertically arranged on the base plate, the line drawing cantilever is rotatablely connected with the upright post and can upwards and downwards slide along the upright post, the main slide plate is glidingly arranged on the line drawing cantilever, the main line drawing head is glidingly arranged on the main slide plate, the sub slide plate is glidingly arranged on the main line drawing head, the sub line drawing head is glidingly arranged on the sub slide plate, in addition, the main slide plate is vertical to the upright post, thesub slide plate, the upright post and the main slide plate are respectively vertical, and scales are carved on the upright post, the line drawing cantilever, the main slide plate and the sub slide plate. The three-coordinate line drawing device is applicable to the line drawing work procedure of parts such as steam cylinders, insulation plates, rotating separation plates, bearing seats, spray nozzle groups, steering guide blade rings, steam sealing components, high-pressure spray nozzles and the like in steam turbine industry, the operation is simple, the error is small, the precision is high, the accuracy of the line drawing work procedure and the work efficiency are favorably improved, and the abandoned phenomenon caused by allowance insufficiency discovered during the mechanical processing of parts because the line drawing is inaccurate is avoided.

Description

technical field [0001] The invention relates to a three-coordinate marking device. Background technique [0002] Cylinders, baffles, rotating baffles, bearing housings, nozzle groups, steering vane rings, steam seal components, high-pressure nozzles, etc. are important parts of steam turbines, gas turbines, and industrial steam turbines. They usually have to be marked during machining. The purpose of the marking process is usually: ① check whether the size of the blank is qualified, check whether the size of the parts is qualified after welding; ② mark the processing line and other parts according to the product drawings and process documents Processing baseline; ③Reasonable distribution of processing allowance. [0003] The above-mentioned part sets have one thing in common, that is, from the diameter of the circle, the parts are divided into upper and lower halves or four parts: upper left, lower left, upper right, and lower right. ", "Middle parting plane" is an importa...

AI Technical Summary

Problems solved by technology

[0008] However, since each scribing tool works independently of each other, there is an error in the use of the scribing tool. This error is related to the technical level of the scribing worker and the scribing process method used. The size is not easy to quantitatively judge, and directly affects the scribing. The accuracy and work efficiency of the process, when the error is large, it will cause difficulties in the subsequent machining process, and the product parts need to be repaired and reused, and even due to inaccurate scribing, the parts are found to have insufficient margin during machining and are scrapped

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