Q:is it the first overall drawing, or first out parts drawings, and then assembly?

Take out the part drawings first and then assemble them into a whole picture

Q:What are the main functions of CAE software commonly used in the design of mechanical products or parts?

Finite element analysis, structural motion analysis, interference checking, dimensional chain analysis.

Q:In the design of large machinery, it is to design the parts first, the assembly drawings as well

The design stage to do assembly structure. According to the structure design of parts and related calculation. The choice of materials and structures suitable. The original painting is the first climbing board assembly, and then split the parts of the map.

Q:Who knows what the design criteria for machine parts are, and how they are designed?

5. life standards, in order to ensure that the machine in a certain life span of normal work, in the design of mechanical parts, it is necessary to request the life of mechanical parts. It should be explained that parts can be replaced during the life of the machine, that is, the life of some mechanical parts is shorter than the life of the machine. The life of mechanical parts is mainly affected by fatigue, wear and corrosion of materials. In order to avoid failure caused by parts fatigue, such as fatigue fracture, fatigue strength should be calculated according to the fatigue limit corresponding to the life of mechanical parts. That is to say, according to the requirements of life and the specific speed of parts, according to formula (3-6), the fatigue limit is calculated when the stress cycle number is N. Then the strength condition is calculated and the fatigue strength is calculated. When the fatigue strength is satisfied, the stress cycle times of the mechanical parts can be guaranteed before the damage. Wear is usually unavoidable. Under certain conditions, corrosion is inevitable, such as structural members of bridges, corrosion of buried steel pipelines, etc.. In the design, mainly to ensure the mechanical parts in life, not excessive wear and corrosion. The mechanism of wear is still fully mastered, and there are many factors affecting wear. Generally, the wear resistance of friction pairs is improved according to the tribological design principle. The main measures are as follows: reasonable selection of friction pairs, reasonable choice of lubricant and additives, and control of the working conditions of friction pairs, such as pressure, sliding speed and temperature rise. So far, there is no practical and effective method for calculating corrosion life

Q:What are the basic requirements for the design of mechanical parts?

In order to improve the strength of mechanical parts, the following measures can be adopted in principle at design time:Adopt a material of high strength;Make the part have enough sectional size;The sectional shape of a part is properly designed to increase the moment of inertia of the cross section;The mechanical properties of the material were improved by heat treatment and chemical heat treatment;Improve the manufacturing accuracy of moving parts to reduce the dynamic load at work;Reasonable allocation of parts of the machine in order to reduce the impact on the parts of the load.

Q:Does the SolidWorks mechanical design engineer paint parts individually or draw parts in an assembly?

There are two ways, corresponding to "bottom up" and "top down" two design methods.

Q:What are the main principles of mechanical principles and mechanical parts design?

7. part surface quality requirements and corrosion protection requirements;8. cost factors;......There are many other factors.

Q:Good mechanical design or good mechanical manufacturing?

The range of mechanical design and manufacturing involves relatively wide, including both mechanical manufacturing and automation;

Q:Mechanical design, hardness of the workpiece, how to determine, for example, in the drawings, technical requirements of the hardness value how to get?

If you are engaged in a kind of graduation design, go to the library and borrow some of the heavy tools for your design manual, mechanical, can get the corresponding information in the manual, manual information can be used as the basis,

Q:How to write the machining process design of machine parts?

According to each process that the part needs to be processed, the processing technique is determined. The so-called processing technology, that is: the processing of each process, the processing required to what extent?. If the text is not clear, you can draw the technical drawings to illustrate.