液压与气压传动（英汉双语）第2版教学课件作者陈淑梅第8章Chapter_8课件.pptVIP

your suggestions  are welcome! The End Fig. 8-2 The outline and hydraulic system of SZ-250A type injection moulding Fig. 8-4 Hydraulic system for JS01industry manipulator * Chapter 8 Examples of Hydraulic Systems * Hydraulic and pneumatic pressure transmission Chapter 8 Examples of Hydraulic Systems Chapter list 8.1 Hydraulic System of Power-slipway of Combined Machines Tools 8.2 Hydraulic System of Plastic Injection Moulding Machine 8.3 Hydraulic System of YA32-200 Type Four-column Universal Press Machine 8.4 Hydraulic System of Manipulators Find out the working principle for a given set of machine or apparatus and understand the performance of the desired function for speeds and pressures and directions during the machine working periods; Read the preliminary sketch of the hydraulic system ,classified into several basic hydraulic circuit units by actuators; Analyze respectively the principles of several basic circuits and find out the relationship between basic circuits to tidy up the lines; 4. Safety of operation; 5. Efficiency of operation; 6. Sum up and comprehend the features of the hydraulic system based on the functions of several basic hydraulic circuits mentioned above. Take steps: 8.1 Hydraulic System of Power-slipway for combined Machine Tools 8.1.1 Introduction 8.1.2 The principle of hydraulic system for YT4543 type power-slipway 8.2.3 Characteristics 8.1.1 Introduction 8.1.2 The principle of hydraulic system for YT4543 type power-slipway The principle chart and operation cycle table of hydraulic system for YT4543 type power-slipway are shown in Fig.8-1 and Tab.8-1, respectively. This system can accomplish a semi-automation cycle, i.e., quick feed→ working feed → end block dwell →quick retract →stop Fig.8-1 YT4543 type power-slipway hydraulic system 1- Hydraulic pump 2, 7,12-Check valve 3- Directional control valve by hydraulic actuated 4- Pilot solenoid valve 5- Against pressure valve