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ID:44291962
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页数:5页
时间:2019-10-20
《插床机构的力分析》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、插床主运动机构的力分析1题目:插床主运动机构的力分析如图所示为插床得主运动机构沿逆时针方向转90度以后的机构简。已知各机构的质量7723=22kg,m4=2.5kg>®"lkg,切削阻力/<=1500N;个干的长=0-04944m,=032361lo2o3=0J6m;滑块5的冲程H二0.31569m;各构件的质心的位置◎=013m,^=0.05m,仏=—訂2,b=0.08m,c=0.172m;各构件转动惯量人3=°・°35如匚人4=0.22x10%•叭曲柄1的等角速度0=12.5664"d/$。
2、计算当®=12。时各运动副中的约朿反力和应加于构件1上的平衡力矩以及弘到C点距离%0插床机构简图2数学模型(1)机构力分析构件1厂61)’_呂2)‘=°&6Ix-&2x=°构件2f^l2x―^23X=。&2.y_尺23>=°构件3tan&3=一心“/^23y加3*g+R心+R(g=R还3、3+加3*lO3S3*Gs3)*d3构件4尺3牡+加4*=粘Rg和BC*sin(&4-龙)+/?以*】BC*sin(&4一龙)-R34y叫C*COS(&4-巧-R45y*lBC*COS(&4_龙)=2*丿》*冇构件5R45y+他5=°<尺45.丫+加5*g=PC*日65+PC*C=/W5*&*〃3程序设计%1•输入已知数据clear;m3=22;m4=2.5;m5=41;Pc=1500;102A=0.04944;103B=0.32361;1BC=O.24271;10203=0.16;H=0.4、31569;IO3S3=0.13;a=0.05;lBS3=lBC/2;b=0.08;c=0.172;hd=pi/180;thetal=12*hd;Js3=0.035;Js4=0.00022;g=10;theta3=atan((lO2O3+lO2A*sin(thetal))/(lO2A*cos(thetal)));omega3=(lO2A*lO2A+lO2A*lO2O3*sin(thetal))/(lO2A*lO2A+lO2O3*lO2O3+2*102A*1O2O3*sin(theta1));al5、pha3=(-2*lO2A*lO2A*lO2O3*lO2O3*cos(thetal))/((lO2A*lO2A+lO2O3*lO2O3+2*lO2A*lO2O3*sin(thetal))*(lO2A*lO2A4-lO2O3*lO2O3+2*lO2A*lO2O3*sin(thetal)));z=sqrt(lBC*lBC-H*H+2*H*lO3B*sin(theta3)-(lO3B*sin(theta3))*(lO3B*sin(theta3)));theta4=asin((H-lO3B*sin(th6、eta3))/lBC)+pi;omega4=(-lO3B*cos(theta3)*alpha3)/z;alpha4=((2*lO3B*sin(theta3)*z+lO3B*cos(theta3)*(2*H*lO3B*cos(theta3)-lO3B*lO3B*sin(2*theta3)))*omega3*omega3)/(2*z*z*z)-(lO3B*cos(theta3)*alpha3)/z;ac=-(lBC*cos(theta4-pi)*omega4*omega4+lBC*sin(theta7、4-pi)*alpha4)-(lO3B*cos(theta3)*omega3*omega3+lO3B*sin(theta3)*alpha3);alpha=asin(a/103S3);R45x=Pc-m5*g;R34x=R45x-m4*g;R34y=(R34x*lBC*sin(theta4)+R45x*lBC*sin(theta4)+2*Js3*alpha4)/(2*lBC*cos(theta4));R45y=R34y;R65=-R45y;H65=(m5*g-Pc*c)/R65;R23x=((Js8、3+m3*lO3S3*lO2O3)*alpha3+R34y*lO3B*cos(theta3)・m3*g*lO3S3*sin(theta3+alpha)-R34x*lO3B*sin(theta3))/(lO2O34-lO2A*sin(thetal)+lO2A*tan(theta3)*cos(theta3));R23y=-R23x*tan(theta3);R12x=R23x;R12y=R23y;R61x=R23x;R61y=R23y;R63x=R34x・m3*g・R23x;R63y=R34y-R23
3、3+加3*lO3S3*Gs3)*d3构件4尺3牡+加4*=粘Rg和BC*sin(&4-龙)+/?以*】BC*sin(&4一龙)-R34y叫C*COS(&4-巧-R45y*lBC*COS(&4_龙)=2*丿》*冇构件5R45y+他5=°<尺45.丫+加5*g=PC*日65+PC*C=/W5*&*〃3程序设计%1•输入已知数据clear;m3=22;m4=2.5;m5=41;Pc=1500;102A=0.04944;103B=0.32361;1BC=O.24271;10203=0.16;H=0.
4、31569;IO3S3=0.13;a=0.05;lBS3=lBC/2;b=0.08;c=0.172;hd=pi/180;thetal=12*hd;Js3=0.035;Js4=0.00022;g=10;theta3=atan((lO2O3+lO2A*sin(thetal))/(lO2A*cos(thetal)));omega3=(lO2A*lO2A+lO2A*lO2O3*sin(thetal))/(lO2A*lO2A+lO2O3*lO2O3+2*102A*1O2O3*sin(theta1));al
5、pha3=(-2*lO2A*lO2A*lO2O3*lO2O3*cos(thetal))/((lO2A*lO2A+lO2O3*lO2O3+2*lO2A*lO2O3*sin(thetal))*(lO2A*lO2A4-lO2O3*lO2O3+2*lO2A*lO2O3*sin(thetal)));z=sqrt(lBC*lBC-H*H+2*H*lO3B*sin(theta3)-(lO3B*sin(theta3))*(lO3B*sin(theta3)));theta4=asin((H-lO3B*sin(th
6、eta3))/lBC)+pi;omega4=(-lO3B*cos(theta3)*alpha3)/z;alpha4=((2*lO3B*sin(theta3)*z+lO3B*cos(theta3)*(2*H*lO3B*cos(theta3)-lO3B*lO3B*sin(2*theta3)))*omega3*omega3)/(2*z*z*z)-(lO3B*cos(theta3)*alpha3)/z;ac=-(lBC*cos(theta4-pi)*omega4*omega4+lBC*sin(theta
7、4-pi)*alpha4)-(lO3B*cos(theta3)*omega3*omega3+lO3B*sin(theta3)*alpha3);alpha=asin(a/103S3);R45x=Pc-m5*g;R34x=R45x-m4*g;R34y=(R34x*lBC*sin(theta4)+R45x*lBC*sin(theta4)+2*Js3*alpha4)/(2*lBC*cos(theta4));R45y=R34y;R65=-R45y;H65=(m5*g-Pc*c)/R65;R23x=((Js
8、3+m3*lO3S3*lO2O3)*alpha3+R34y*lO3B*cos(theta3)・m3*g*lO3S3*sin(theta3+alpha)-R34x*lO3B*sin(theta3))/(lO2O34-lO2A*sin(thetal)+lO2A*tan(theta3)*cos(theta3));R23y=-R23x*tan(theta3);R12x=R23x;R12y=R23y;R61x=R23x;R61y=R23y;R63x=R34x・m3*g・R23x;R63y=R34y-R23
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