Table of contents
1 Introduction 1
1.1 Development status of machinery industry 2
1.2 Status of machinery manufacturing industry in the national economy 2
1.3 Opportunities and challenges faced by China's machinery manufacturing industry 3
2 Selection of blanks 4
2.1 Types of blank materials 4
2.2 Considerations should be taken when determining blanks Factor 4
2.3 Several technological measures when determining the blank 4
2.4 Determination of the blank 5
3 Analysis of the right spindle box parts of the 4S9 right crankcase double-sided drilling special machine tool 6
3.1 The function and structure of the parts 6
3.2 The process analysis of the parts 6
4 Process regulations Design 8
4.1 Determine the manufacturing form of the blank 8
4.2 Selection
of datum plane 8 4.2.1 Concept and classification
of datum 8 4.2.2 Analysis of datum problem 8
4.3 Formulate process route 10
4.4 Design of machining allowance, process size and blank size Determination 13
4.5 Determination of cutting amount and processing time 15
5 Fixture Design 37
5.1 Overview of Fixture 37
5.2 Design of Special Fixture 40
Conclusion 46
Acknowledgments 47
References 48
3 4S9 Right Crankcase Double-sided Drill Special Machine Tool Analysis of Right Headstock Parts
3.1 Parts role and structure
This part is the right crankcase on the engine of Yamaha Motorcycle 07C. It is an important part of the engine. Inside the box cover are clutches, starting mechanisms, shift levers, magneto and other important components. Lubricating oil has the function of lubricating and sealing and plays an important role in the operation of the engine. See Figure 3.1.
For the specific structure of the parts, see the appendix "Parts Diagram of the Front and Back of the Right Crankcase"
Figure 3.1 Parts on the front and back of the right crankcase Figure 3.2 Process analysis of
parts
Requirements, there are roughness requirements, as well as the parallelism requirements between them, which are described as follows. There are certain position requirements between them. The first analysis is as follows:
