Y
dd2=
查标准带轮直径表确定dd2
a1=0.7(dd1+dd2),a2=2(dd1+dd2)
输入初估中心距a0,计算Ld0
A
减小直径
B
B
查标准长度确定Ld,同时
查取KL,计算实际中心距a
A
计算小带轮包角
查表确定包角系数
计算Po,
Z<10?
计算Fo,Q,B(取整)
输出结果
计算下一型号带?
结束
计算下一种带轮直径?
Y
Y
Y
N
N
N
图1V带设计程序框图
三、程序框图
四、V带设计程序
#include
#include
#include
#definePAI3.14
intTYPE_TO_NUM(chartype);
floatSelect_Ki(floati);
floatSelect_KA(floatH,intGZJ,intYDJ);
floatSelect_KL(floatLd,intTYPE);
floatSelect_M(intTYPE);
floatSelect_dd1(intTYPE);
floatSelect_dd2(intdd1,floati);
floatCompute_P0(floatV,intTYPE,floatdd1);
floatCompute_DIFP0(intTYPE,floatKi,intn1);
floatCompute_VMAX(intTYPE);
floatCompute_KALF(floatALF1);
floatCompute_B(intTYPE,intz);
float*Compute_LAK(floatdd1,floatdd2,intTYPE);
main()
{
floatP,H,i,n1,KA,Ki,dd1,dd2,V,P0,DIFP0,Pd,VMAX,*LAK,m,Ld,KALF,a,KL,z,F0,ALF1,Q,B;
intYDJ,GZJ,TYPE,ANS;
chartype,ans;
START:
printf("欢迎使用普通V带传动设计电算软件\n");
printf("机械设计电算\n文奇1120810610\n
V带传动设计程序\n");
printf("\n");
printf("请输入各项原始参数\n");
printf("1.传递功率P(单位KW):
");
printf("\n");
scanf("%f",&P);
IF5:
if(P>10)
{
printf("警告:
传递功率过大,请重新输入\n");
printf("1.传递功率P(单位KW):
");
printf("\n");
scanf("%f",&P);
gotoIF5;
}
printf("\n");
printf("2.小带轮转速n1(单位r/min):
");
printf("\n");
scanf("%f",&n1);
IF4:
if(n1>10000)
{
printf("警告:
输入转速达到高速带传动,请降低转速并重新输入\n");
printf("2.小带轮转速n1(单位r/min):
");
printf("\n");
scanf("%f",&n1);
gotoIF4;
}
printf("\n");
printf("3.传动比i:
");
printf("\n");
scanf("%f",&i);
IF6:
if(i>4)
{
printf("警告:
输入传动比过高,请重新输入\n");
printf("3.传动比i:
");
printf("\n");
scanf("%f",&i);
gotoIF6;
}
printf("\n");
printf("4.原动机类型(I
(1)或II
(2)):
\n说明:
I类-普通鼠笼式电机、同步电机、直流电机(并激),n>600r/min燃机\nII类-交流电动机、直流电动机、单缸发动机、n<600r/min燃机\n");
scanf("%d",&YDJ);
IF1:
if(YDJ!
=2&&YDJ!
=1)
{
printf("输入错误!
请重新输入!
\n");
printf("4.原动机类型(I
(1)或II
(2)):
\n说明:
I类-普通鼠笼式电机、同步电机、直流电机(并激),n>600r/min燃机\nII类-交流电动机、直流电动机、单缸发动机、n<600r/min燃机\n");
scanf("%d",&YDJ);
gotoIF1;
}
printf("\n");
printf("5.载荷类型:
\n0:
载荷平稳\n1:
载荷变动较小\n2:
载荷变动较大\n3:
载荷变动很大\n");
scanf("%d",&GZJ);
IF2:
if(GZJ!
=0&&GZJ!
=1&&GZJ!
=2&&GZJ!
=3)
{
printf("输入错误!
请重新输入!
\n");
printf("5.载荷类型:
\n0:
载荷平稳\n1:
载荷变动较小\n2:
载荷变动较大\n3:
载荷变动很大\n");
scanf("%d",&GZJ);
gotoIF2;
}
printf("\n");
printf("6.每天的工作时间:
\n0:
<10h(一班制)\n1:
10h~16h(两班制)\n2:
>16h(三班制)\n");
scanf("%f",&H);
IF3:
if(H!
=0&&H!
=1&&H!
=2)
{
printf("输入错误!
请重新输入!
\n");
printf("6.每天的工作时间:
\n0:
<10h(一班制)\n1:
10h~16h(两班制)\n2:
>16h(三班制)\n");
scanf("%f",&H);
gotoIF3;
}
printf("\n");
DX:
printf("7.请选择V带带型(Z、A、B、C、D、E):
\n");
scanf("%c",&type);
TYPE=TYPE_TO_NUM(type);
KA=Select_KA(H,GZJ,YDJ);
Pd=KA*P;
VMAX=Compute_VMAX(TYPE);
DD1:
dd1=Select_dd1(TYPE);
V=PAI*dd1*n1/60000;
while(V>VMAX)
{
printf("\n");
printf("警告:
所选小轮基准直径过小!
请重新选择!
\n");
dd1=Select_dd1(TYPE);
V=PAI*dd1*n1/60000;
}
dd2=Select_dd2(dd1,i);
P0=Compute_P0(V,TYPE,dd1);
Ki=Select_Ki(i);
DIFP0=Compute_DIFP0(TYPE,Ki,n1);
LAK=Compute_LAK(dd1,dd2,TYPE);
Ld=LAK[0];
a=LAK[1];
KL=LAK[2];
ALF1=180-57.3*(dd2-dd1)/a;
KALF=Compute_KALF(ALF1);
z=ceil(Pd/(KALF*KL*(P0+DIFP0)));
if(z>=10)
gotoDX;
m=Select_M(TYPE);
F0=500*Pd*(2.5-KALF)/(z*V*KALF)+m*V*V;
Q=2*z*F0*sin(ALF1*PAI/360);
B=Compute_B(TYPE,z);
printf("\n");
printf("计算结果\n");
printf("\n");
printf("小轮直径:
%fmm\n\n大轮直径:
%fmm\n\n中心距:
%fmm\n\n带长:
%fmm\n\n带宽:
%fmm\n\n带的根数:
%f\n\n初拉力:
%fN\n\n轴压力:
%fN\n\n",dd1,dd2,a,Ld,B,z,F0,Q);
printf("\n");
X:
printf("请选择:
\nY:
计算下一组带轮\nS:
重新开始\nN:
结束\n");
scanf("%c",&ans);
ANS=TYPE_TO_NUM(ans);
if(ANS==6)
gotoDD1;
elseif(ANS==7)
gotoSTART;
elseif(ANS==8)
printf("程序结束");
else
{
printf("输入错误,请重新输入");
gotoX;
}
}
/*工作情况系数选择*/
floatSelect_KA(floatH,intGZJ,intYDJ)
{
/*表5.7工作情况系数KA*/
floatka1[4][3]={{1.0,1.1,1.2},{1.1,1.2,1.3},{1.2,1.3,1.4},{1.3,1.4,1.5}};
floatka2[4][3]={{1.1,1.2,1.3},{1.2,1.3,1.4},{1.4,1.5,1.6},{1.5,1.6,1.8}};
floatKA;
if(YDJ==1)
{
if(H==0)
KA=ka1[GZJ][0];
elseif(H==2)
KA=ka1[GZJ][2];
else
KA=ka1[GZJ][1];
}
if(YDJ==2)
{
if(H==0)
KA=ka2[GZJ][0];
elseif(H==2)
KA=ka2[GZJ][2];
else
KA=ka2[GZJ][1];
}
returnKA;
}
/*传动比系数*/
floatSelect_Ki(floati)
{
floatm;
/*表5.6传动比系数Ki*/
floatKi[10]={1.0000,1.0136,1.0276,1.0419,1.0567,1.0719,1.0875,1.1036,1.1202,1.1373};
floatI[10]={1.00,1.02,1.05,1.09,1.13,1.19,1.25,1.35,1.52,2.00};
intj=9;
for(j=9;j>=0;j--)
{
m=i-I[j];
if(m>=0)
break;
}
returnKi[j];
}
/*确定选择带型*/
intTYPE_TO_NUM(chartype)
{
intx;
if(type<91)
{
type+=32;
}
switch(type)
{
case'z':
x=0;
break;
case'a':
x=1;
break;
case'b':
x=2;
break;
case'c':
x=3;
break;
case'd':
x=4;
break;
case'e':
x=5;
break;
case'y':
x=6;
break;
case's':
x=7;
break;
case'n':
x=8;
break;
}
returnx;
}
/*计算额定功率*/
floatCompute_P0(floatV,intTYPE,floatdd1)
{
floatP0;
floatK1[6]={0.246,0.449,0.794,1.48,3.15,4.57};
floatK2[6]={7.44,19.02,50.6,143.2,507.3,951.5};
floatK3[6]={0.441e-4,0.765e-4,1.31e-4,2.34e-4,4.77e-4,7.06e-4};
P0=(K1[TYPE]*pow(V,-0.09)-K2[TYPE]/dd1-K3[TYPE]*V*V)*V;
returnP0;
}
/*表5.5弯曲影响系数Kb*/
floatCompute_DIFP0(intTYPE,floatKi,intn1)
{
floatKb,DIFP0;
floatKB[6]={0.2925e-3,0.7725e-3,1.9875e-3,5.625e-3,19.95e-3,37.35e-3};
Kb=KB[TYPE];
DIFP0=Kb*n1*(1-1/Ki);
returnDIFP0;
}
/*小带轮基准直径*/
floatSelect_dd1(intTYPE)
{
inti;
floatdd1;
floatDD1[6][4]={{50.0,63.0,71.0,80.0},{75.0,90.0,100.0,125.0},{125.0,140.0,160.0,180.0},
{200.0,250.0,315.0,400.0},{355.0,400.0,450.0,500.0},{500.0,560.0,630.0,710.0}};
printf("\n");
printf("所选型号小带轮系列直径有(mm):
\n");
for(i=0;i<4;i++)
{
printf("%f",DD1[TYPE][i]);
}
printf("\n8.请选择输入小带轮基准直径dd1:
");
scanf("%f",&dd1);
IF12:
if(dd1!
=DD1[TYPE][0]&&dd1!
=DD1[TYPE][1]&&dd1!
=DD1[TYPE][2]&&dd1!
=DD1[TYPE][3])
{
printf("警告:
未输入有效数据,请重新输入");
printf("\n8.请选择输入小带轮基准直径dd1:
");
scanf("%f",&dd1);
gotoIF12;
}
returndd1;
}
/*大带轮基准直径*/
floatSelect_dd2(intdd1,floati)
{
floatDD2[]={50,56,63,71,80,90,100,112,125,140,150,160,180,200,224,
250,280,315,355,400,425,450,500,560,600,630,710,800};
floatdd2,temp,t;
intj=0;
temp=i*dd1;
for(j=0;j<28;j++)
{
t=temp-DD2[j];
if(t<=0)
break;
}
if((DD2[j]-temp)<(temp-DD2[j-1]))
dd2=DD2[j];
else
dd2=DD2[j-1];
returndd2;
}
/*估计中心距*/
float*Compute_LAK(floatdd1,floatdd2,intTYPE)
{
intj=0;
floata1,a2,a0,Ld0,temp,KALF,Ld,a,KL;
floatLAK[3];
floatkl[23][6]={{400,0.87},{450,0.89},{500,0.91},
{560,0.94},{630,0.96,0.81},{710,0.99,0.83},{800,1.00,0.85,0.82},{900,1.03,0.87,0.84,0.83},{1000,1.06,0.89,0.86,0.86,0.83},
{1120,1.08,0.91,0.88,0.88,0.86},{1250,1.10,0.93,0.90,0.91,0.89},{1400,1.14,0.96,0.92,0.93,0.91},{1600,1.16,0.99,0.95,0.95,0.93},
{1800,1.18,1.01,0.98,0.97,0.96},{2000,0,1.03,1.00,0.99,0.98},{2240,0,1.06,1.03,1.02,1.00},{2500,0,1.09,1.05,1.04,1.03},
{2800,0,1.11,1.07,1.07,1.06},{3150,0,1.13,1.09,1.09,1.08},{3550,0,1.17,1.13,1.12,1.11},{4000,0,1.19,1.15,1.15,1.14},{4500,0,0,1.18,1.18,1.17},{5000,0,0,0,1.21,1.20}};
a1=0.7*(dd1+dd2);
a2=2*(dd1+dd2);
printf("\n");
printf("9.请选择输入初估中心距a0(围为%.2fmm~%.2fmm):
",a1,a2);
scanf("%f",&a0);
IF11:
if(a0a2)
{
printf("输入中心距超出围,请重新输入\n");
printf("9.请选择输入初估中心距a0(围为%.2fmm~%.2fmm):
",a1,a2);
scanf("%f",&a0);
gotoIF11;
}
Ld0=2*a0+(dd1+dd2)*PAI/2+(dd2-dd1)*(dd2-dd1)/a0/4;
for(j=0;j<23;j++)
{
temp=Ld0-kl[j][0];
if(temp<=0)
break;
}
if((Ld0-kl[j-1][0])>(kl[j][0]-Ld0))
{Ld=kl[j][0];
KL=kl[j][TYPE+1];
}
else
{Ld=kl[j-1][0];
KL=kl[j-1][TYPE+1];
}
a=a0+(Ld-Ld0)/2;
LAK[0]=Ld;
LAK[1]=a;
LAK[2]=KL;
returnLAK;
}
/*最大带速*/
floatCompute_VMAX(intTYPE)
{
floatVMAX;
switch(TYPE)
{
case0:
case1:
case2:
case3:
VMAX=25;
break;
case4:
case5:
VMAX=30;
break;
}
returnVMAX;
}
floatSelect_M(intTYPE)
{