Thiết kế máy cắt biên dạng ống tự động điều khiển CNC

NGHIEN cufu - TRAO DOI

J DESIGN OF AUTOMATIC PIPE PROFILE CUTTING MACHINE

BY CNC CONTROL

THIET KE MAY CAT BifiN DANG 6N G T U DON G DIEU KHIEN CNC

Msc. Phan Huy Le, AssocProf.PhD. Bui Van Hanh

Department of Welding Engineering and Metal's Technology- School of Mechanical Engineering

Hanoi University of Science and Technology

ABSTRACT

The manufacture of auto-lifred oilrig and the oil pipeline system in the petroleum refinery

are important projects, occupying a large volume in Vietnam's industry. In such works, the process of

making structural system from steel tube is mostly works. The tube cutting especially at the intersection

of multiple tubes, is required to have accurate edges. It is important to have precision gap welding

in progress of assembly welding after that. Manual cutting has the disadvantages such as low

productivity, wide, inexactly gap welding, wasting welding metal, leading to increase stress, strain

in the intersections of the tubes. The solution automatically CNC controlled cutting causes the

increasing performance, beautiful cutting edge, steady gap welding. This report introduces the result

of research, design automotive cutting system. It includes four sections; design calculation mechanical

system, building equation of machine's orbital, design controller and control algorithms.

Keywords: CNC, Automatic pipe profile cutting, oilpipe, nut.

TOM TAT

Viec che tao chdn gidn khoan ddu khi vd cdc he thdng dudng ong ddn ddu, khi cda cdc nhd

mdy Igc ddu dang la cdc cong trinh quan trgng, chiem khdi lugng ldn trong cong nghiep Viet Nam.

Trong cdc cong trinh do, viec che tao ket cdu he dng ddn td phoi thep dng chiem chu yeu. Viec cat

cdc ong dd yeu cdu diit do chinh xdc cao nhdm ddm bdo khe hd hdp ly cho qud trinh hdn lap ghep

he thong ong ve sau, ddc biet Id tai cdc nut giao nhau cda nhieu dng. PhUdng phdp cat thu cdng cd

nhuac diem la cho ndng sudt thdp vd ddc biet Id khe hd hdn ldn ldm tang lUdng kim loai dip din

den ldm tdng dng sudt vd bien dang tcii nut giao nhau cua cdc ong. Gidi phdp cat tU dgng dieu khien

CNC cho ndng sudt cao vd mep cat dep, khe hd hdn dong deu. Bieu dd cho phep nhdn dudc mdi hdn

cd chdt lUdng cao, it cong venh, hien dang Bdi bdo gidi thieu cdc ket qud nghien cdu tinh todn thiet

kl mdy cat hien dang ong tU dgng dieu khien CNC ldm viec tqi hiin trudng Ndi dung bao gom cdc

phdn; Tinh todn thiet kehe thong ddn dgng vd truyen dgng xdy diing phudng trinh quy diio cat cho

mdy, thiet kehe thong dieu khien vd xdy dung thudt todn dieu khien.

Tii khoa: CNC, cat dng tU dgng ong ddn ddu, nut.

TAP CHf CO KHf VI£ T NAM, Sd 8 nSm 2014

www.cokhivietnam.vn