机电课程设计液压压块机系统.docx
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机电课程设计液压压块机系统
课程设计说明书
设计题目:
铜铝屑液压压块机系统
学院、系:
机械设计及其自动化学院
专业班级:
机械电子工程08—2班
学生姓名:
指导教师:
成绩:
年月日
目录
目录················································1
一;根据控制要求,总结机器动作顺序··················2
1.1控制要求······················································2
1.2机器动作顺序··················································2
二、绘制液压传动原理图,模拟机器动作················2
2.1分析系统,绘制液压传动原理图··································2
2.2机器动作仿真··················································2
三:
继电器控制仿真··································5
3.1机器动作顺序表················································5
3.2中间继电器控制线路设计········································5
3.3电磁阀输出控制线路设计········································6
3.4继电器控制仿真················································7
四PLC系统I/O配置·······························10
4.1PLC选型···················································11
4.2绘制接线图····················································11
五梯形图设计······················12
5.1设计内部继电器逻辑梯形图·····································12
5.2设计电磁阀输出控制梯形图·····································13
5.3梯形图仿真调试···············································14
一;根据控制要求,总结机器动作顺序
1.1控制要求
1.2机器动作顺序
按下启动按钮之后,辅助缸C2压下→主缸C1推出→C1退回→C2上升→C1快进→C1后退到位,液压泵卸荷
二、绘制液压传动原理图,模拟机器动作
2.1分析系统,绘制液压传动原理图
2.2机器动作仿真
1.未启动时
2.1YA作用时
3.2YA作用时
43YA作用时
54YA作用时
65YA作用时
三:
继电器控制仿真
3.1机器动作顺序表
通过机器动作仿真,能够明确机器各动作时相关输入信号(按钮,位置开关,压力继电器)的状态和电磁阀通断电情况,因而可以绘出机器动作顺序表。
该表中,+号表示电磁铁通电,-号表示电磁铁断电,中间继电器一列用于继电器控制线路设计,发信元件指的是与退出某一工况有关的元件。
表3-1机器动作顺序表
1YA
2YA
3YA
4YA
5YA
发信元件
继电器
C2压下
—
—
+
—
+
SQ4
K1
C1快进
+
—
—
—
+
SQ2
K2
C1快退
—
+
—
—
+
SQ1
K3
C2上升
—
—
—
+
+
SQ3
K4
C1快进
+
—
—
—
+
SQ2
K5
C1快退
—
+
—
—
+
SQ1
K6
卸荷
—
—
—
—
—
SB1
K7
3.2中间继电器控制线路设计
3.3电磁阀输出控制线路设计
对于每一输出支路,可以依据通电的情况(表中的+号)进行设计,这时应把所有通电的中间继电器的常开触点并联起来
1YA=K2.K5;
2YA=K3.K6;
3YA=K1;
4YA=K4;
5YA=K0.
;
K0=SB2(K1﹢K0);
3.4继电器控制仿真
开始时
C2压下
C1前进
C1后退
C2上升
C1前进
C1后退
卸荷
四PLC系统I/O配置
4.1PLC选型
根据液压传动原理图和继电器控制线路图,确定出系统所包含的输入元件和输出元件。
输入元件:
SB1,SB2,SQ1,SQ2,SQ3,SQ4;
输出元件:
1YA,2YA,3YA,4YA,5YA。
PLC的I/O端口分配
输入分配
输出分配
元件编号
输入点编号
元件编号
输入点编号
SQ1C1原位开关
X0
1YAV1右边电磁铁
Y0
SQ3C2原位开关
X1
2YAV1左边电磁铁
Y1
SQ2C1终点开关
X2
3YAV2右边电磁铁
Y2
SQ4C2终点开关
X3
4YAV2左边电磁铁
Y3
SQ1启动按钮
X8
5YAV3右边电磁铁
Y4
SQ2停止按钮
X9
4.2绘制接线图
参考HaiwellPLC硬件手册中主机和开关量扩展模块的接线端子配置图、开关量输入输出接线图,用绘图软件绘制PLC主机接线图、开关量扩展模块接线图。
PLC主机接线图
开关量扩展模块接线图
五梯形图设计
5.1设计内部继电器逻辑梯形图
5.2设计电磁阀输出控制梯形图
5.3梯形图仿真调试
梯形图仿真过程表
1
启动
/SB2,
5YA
2
C2压下
/SB2SB1
M1
3YA5YA
3
C1快进
/SB2
M2
1YA5YA
4
C1快退
/SB2
M3
2YA5YA
5
C2上升
/SB2
M4
4YA5YA
6
C1快进
/SB2
M5
1YA5YA
7
C1快退
/SB2
M6
2YA5YA
7
卸荷
/SB2
M7
5YA