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Mechanical Design An Important Part Of Mechanical Engineering
Sep 14, 2017

Mechanical design According to the requirements of the use of the mechanical working principle, structure, movement, force and energy transmission methods, the various parts of the material and shape size, lubrication methods, etc., to analyze and calculate and translate it into a specific description as Manufacturing basis of the work process. Mechanical design is an important part of mechanical engineering, mechanical production is the first step, is to determine the mechanical properties of the most important factor. The goal of mechanical design is to design the best machinery under a variety of defined conditions (such as materials, processing capacity, theoretical knowledge and calculation means) to optimize the design. Optimized design requires a comprehensive consideration of many requirements, generally having the best performance, minimum manufacturing cost, minimum size and weight, maximum reliability in use, minimum consumption and minimal environmental pollution. These requirements are often contradictory, and the relative importance between them varies depending on the type and purpose of the machine. The designer's task is to weigh the severity of the situation, take into account the design of the machinery has the best comprehensive technical and economic effects. In the past, the design of the optimization depends mainly on the designer's knowledge, experience and vision. With the basic theory of mechanical engineering and value engineering, system analysis and other new disciplines of the development, manufacture and use of technical and economic data accumulation.

Design classification

Mechanical design can be divided into new design, inheritance design and variant design 3 categories.

1, the new design

The use of mature science and technology or experiment proved to be feasible new technology, the design of the past did not have a new type of machinery.

2, inheritance design

According to the use of experience and technology development of existing machinery design updates to improve its performance, reduce its manufacturing costs or reduce its use costs.

3, variant design

In order to adapt to the new needs of the existing machinery for part of the changes or additions and deletions and development of different from the standard type of product.

Main process

1, according to the user orders, market needs and new scientific research to develop design tasks.

2, the initial design. Including the working principle and basic structure of the machinery, the design of the motion, the design of the structure and the drawing of the preliminary general plans and the preliminary examination.

3, technical design. Including modifying the design (according to the preliminary opinion), drawing all the parts and the new master map and the second review.

4, work map design. Including the final modification (according to the opinion of the second instance), drawing all the work plans (such as parts drawing, assembly drawings and assembly drawings, etc.), the development of all technical documents (such as parts table, wearing parts list, instructions, etc.).

5, stereotypes design. Used for mass or mass production of machinery. For some design tasks are relatively simple (such as simple mechanical new design, general mechanical inheritance design or variant design, etc.) mechanical design can save the initial design process.