Steel casting surface robot cutting device meeting NDT flaw detection requirements

Abstract

The invention discloses a steel casting surface robot cutting device meeting NDT flaw detection requirements. The device comprises a robot arm and a constant-force cutting device, wherein the constant-force cutting device is arranged on the robot arm, the constant-force cutting device comprises a constant-force pressure regulating device, an inclination angle sensor, a pressure sensor and a milling device, the constant-force pressure regulating device is provided with an air cylinder, and the air cylinder is connected with an air pressure regulating device. The milling device is enabled to adjust a corresponding milling angle according to the shape of a steel casting, the inclination sensor detects an inclination angle of the milling device deviating from the vertical direction, the pressure sensor detects the positive pressure generated on the steel casting by the milling device, then adjusts the pressure of the air cylinder, so that the positive pressure of the milling device is adjusted and always perpendicular to a machining face, the positive pressure is always kept consistent, the shape of the steel casting is accurately milled, the damage to the shape of the steel casting isavoided, the cost is saved, noise and dust are effectively avoided, the dust is changed into recyclable steel chips, and the working environment is improved.

Description

technical field [0001] The invention relates to the field of cutting large steel castings, in particular to a robot cutting device for the surface of steel castings that meets the requirements of NDT flaw detection. Background technique [0002] Cast steel is a very important metal structure material, which has excellent mechanical properties, physical and chemical properties and good weldability. Due to the development of melting and casting technology and the emergence of many new steel types suitable for casting, steel castings have been widely used in industry. In order to meet the non-destructive testing requirements of large steel castings, carbon arc gouging is usually used to remove the expansion box, flash and glaze layer on the surface, and then the carburized layer formed by carbon arc gouging is removed by grinding to meet the requirements. Surface roughness and dimensional accuracy requirements, and finally meet the surface quality requirements of castings by s...

AI Technical Summary

Problems solved by technology

[0003] However, using the above method will generate large noise, dust and arc light during operation, which will pollute the environment, and there is no better way to reduce noise and dust. If the operator is not properly protected during the operation, occupational deafness and pneumoconiosis will occur. sick

Secondly, the requirements for operators are high. Improper operation will cause the lack of meat in the castings, or cause damage to the steel castings.

Carbon arc gouging forms a carburized layer on the surface of the casting, which is not completely removed in the later grinding, which affects the quality of the casting

Shot peening requires large-scale shot peening equipment and a dust removal system with high requirements, which is costly and requires more manpower, which increases labor costs

[0004] Therefore, the roughness and dimensional accuracy of large steel castings are not suitable for industrial mass production in the traditional way. It is very necessary to design a new cutting device to solve the above problems.

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