Improving the quality of cast metal of pipeline valves by modification of nanodispersed refractory particles

Eremin, E. N.; Minnekhanov, G. N.; Minnekhanov, R. G.

doi:10.1063/1.5051933

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…e pouring riser which is inevitable in the cast process should be cut out as "excess" for subsequent machining. At present, the pouring riser is cut with a hand-held abrasive cutting machine basically which has high labor intensity and low efciency [5][6][7]. Large amounts of metal dust and smoke from cutting process oat in the air and cause environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Automatic Cutting System Design of Robot Hand Based on Stereo Vision

Mei¹,

Zou³

2022

Scientific Programming

View full text Add to dashboard Cite

At present, the pouring riser of valve castings is mainly removed by manual cutting, polluting the environment and causing harm to the human body with a low efficiency. Therefore, an automatic cutting pouring riser method using the stereo vision system and manipulator is proposed. The relative position of the valve casting and the end of the manipulator is obtained through the position transformation of the valve casting coordinate system, the manipulator end of the coordinate system, and the camera coordinate system. The spatial motion trajectory of the manipulator is planned, implementing automatic pouring riser cutting of the same valve casting with the same pose. The experimental results show that the position deviation and the angle deviation of the repetitive positioning accuracy and the random positioning accuracy of the visual system are within ±1 mm and ±1°; in the pouring riser cutting test, the maximum deviation between the actual cutting trajectory and the theoretical cutting trajectory is 3 mm. In summary, the method shows a good reliability and could meet the requirements of cutting accuracy.

show abstract

Section: Introductionmentioning

confidence: 99%