Tối ưu kích thước của một số chi tiết trên Robot kiểm tra mối hàn bằng công nghệ CAD-CAE

Cdng trinh Khoa hpc

T 6 I VXJ KIC H THird C CUA MOT SO CHI TIET

TREN ROBOT KIEM TRA MOI HAN

BANG CONG NGHE CAD - CAE

BUI VAN HlTNG

Khoa Cakhi

Tru&ng Dgi hgc Giao thong Vgn tdi

Tom tat: Bdi bdo ndy trinh bdy mdt phuang phdp de tdi iru hda kich thu&c ihiel ke cua

mpt sd chi Hit trin ROBOT kiem tra mot hdn tu dpng dua tren phuang phdp phdn luhitu hgn.

Tren ca sd cdc kich thudc thiet ke cua mpl so chi tiet da cd sdn vd tinh trgng ldm viec cua

ROBOT. Bdi bdo img dung md dun phdn tich ung sudl de ldi uu hoa kich ihu&c thiet ke dugc

tich hgp tren cdc phdn mem CAD - CAE hien nay. Kit qud nghien cuu dua ra phuang phdp

linh todn thiet ki mdi gidm thiiu ih&i gian tinh todn vd mang lgi hieu qud cUng nhu dp chinh

xdc cao.

Summary: The article depicts a method to optimize the design dimensions of some

elements of automatic welding inspection robot using the finite element method. Based on the

size of several elements available and the working state of the robot, the Stress Analysis

Module has been applied lo optimize the dimensions already integrated in CAD - CAM at

present The results proposes a new designing approach to reduce calculating time and

achieve higher efficiency and more accuracy as well

I. DA T VAN DE

Trong ITnh vuc thiit ki may hien nay van dang tdn tai cac phuong phap thiet ki khac

nhau, cac phuong phap da dugc nghien ciiu, iing dung va phat trien tir nhieu nam trudc. Cac

phuang phap thiit ke chi liit may nay nhin chung phai trai qua cac budc co bin nhu sau Irong

qua Irinh tinh loan thiet ke: lap so dd linh loan trong dd kit cau dugc don gian hda, cac luc l^p

trung hoac phan bd theo mdt quy luat nao dd; xac dinh luc tac dung len chi tiet may; chgn v|it

lieu thich hgp vdi dieu kien lam viec cua may - kha nang gia cdng va xet den tinh kinh te; tinh

loan kich thudc theo chi tieu ve kha nang lam viec. Tuy nhien qua tiiidi tinh toan n^y don

gian va ddi hdi sii dung kien thiic ca sd nen tang rit nhiiu song nd chi dimg lai d viec tinh

loan sa bd vdi sa do dugc dan gian hda, cac nhan td tai tigng va iing suat chua dugc danh gia

chinh xac. De thiet kS tdi uu dugc chi liit yeu cku qua trinh che tao va hieu chinh thiet ke

thdng qua danh gia kiem nghiem.

166 Tap chi KHOA HOC GIAO THONG VAN TAI So dac bift -11/2015