When to add verticality in front

Add at the same time. Opposite the axisPerpendicularity, that is, the surface is the datum, and the dimension is oneCylindersof the axis. Perpendicularity is the tolerance requirement of 90° in the direction tolerance to control the angle between the measured element and the datum element, which is divided into the verticality requirements of a given plane, a given direction, and any direction, which is represented by symbols.

According to the characteristics of the measured element and the datum element, the verticality evaluates the vertical state between straight lines, between planes, or between straight lines and planes.

One of the straight lines or planes is the evaluation datum, and the straight line can be the straight line part or the linear motion trajectory of the measured sample, and the plane can be the plane part of the measured sample or the plane formed by the motion trajectory.

Evaluation of verticality.

When the datum is a straight line and the evaluated is a straight line, perpendicularity is the distance between the two planes that contain the points on the line being measured that are perpendicular to and furthest from the datum line.

When the datum is a straight line and the evaluated plane is a plane, perpendicularity is the distance between the two planes that contain points on the plane being measured, which are perpendicular to the datum line and are farthest apart.

When the datum is a plane and the evaluated is a straight line, the perpendicularity is the distance between the two planes containing the points on the measured straight line that are perpendicular to the datum plane and the evaluation direction, and are furthest apart.

When the datum is a plane and the evaluated is a plane, perpendicularity is the distance between the two planes that are perpendicular to the datum plane and are the furthest away from each other that contain points on the plane being measured.

When the dimension indicates the axis of the cylinder based on the surface, the tolerance zone is preceded by a mark to indicate that the tolerance zone is perpendicular to the cylindrical surface with the diameter of the datum. As shown below:

Annotation method. <> definitions.

It should be wrong,,, concentric can be added, because a line and an axis can only be positive... The verticality plus a circle is not clear.

Mechanical drawing is light drawing without design! Mechanical drawing is the basis of mechanical design, because you need to design things inside.

Draw a picture! There are many things to consider when designing a thing, what mechanism to use, what material to choose, what kind of fit to choose, how much tolerance to give, processing method, etc., etc., all need to be given by the designer, and if there is no practical experience, the data given is often not very reasonable! Mechanical drawing is simple, what people need, you draw what, let how to mark how to mark it!

As long as you know how to use mapping software, you don't need to know too much about anything else!

It's late.

Mechanical drawing: Draw drawings according to the sketches drawn and national mechanical drawing standards.

Mechanical design: design the machine scheme, select the material standard parts, calculate the mechanical bearing capacity of the material mechanism, draw sketches or scheme drawings.

Mechanical drawing is just drawing, it is a tool for mechanical design.

First of all, you have to have professional knowledge in the machinery industry to engage in mechanical design and conceive the products with certain functions that customers want. Then draw your ideas according to the relevant drawing standards of the machinery industry.

Mechanical design is the processing design of the required material parts using mechanical principles and mechanical structures. It is necessary to select, calculate, and experiment many times, but mechanical drawing only draws drawings according to requirements, and does not need to check and calculate by yourself. But in mechanical design, you also need to have some knowledge of drawing.

The carriers are all mechanical, and the things of mechanical design must be expressed by mechanical drawing!

Mechanical drawing refers to manual mapping or computer software drawing by drawing tools; The mechanical design includes mechanism design, mechanical mechanics and other factors.

Mechanical drawing is ability, mechanical design is work.

No need to learn to draw geometry, CAD can be learned, in fact, it is very simple, just like drawing by hand, and easy, mechanical design is much more complicated, is a comprehensive discipline, involving many aspects of knowledge, it can be said that the chief designer of a large factory is basically every knowledge, mechanical drawing is just a foundation, CAD is absolutely proficient within a week, the problem is that if the design wants to mature, it will take a lifetime, so the older the machinery industry, the more popular, no accumulation of knowledge and experience is not good.

Design is to realize the requirements put forward by others, you can use oral expression or written documents to write your ideas, more commonly expressed in the way of mechanical drawings, so drawing is the expression of design.

Well, this one.。。 Your mechanical drawing is like drawing a part, a device, with a three-view method, and some mechanical regulations and standards.

But how did you get this part, this device? How is the size of a certain part of this part determined? Do you think it's good-looking, or do you have certain requirements or something? That's what mechanical design does.

Simple Understanding:

Once you've learned mechanical drawing, you're ready to design.

We learn drawing first, mechanical design later. I studied mechanical automation.

AutoCAD drawing, it's not difficult, your spatial imagination ability is OK, it's no problem.

Mechanical design: mechanical design includes mechanical drawing, first of all, mechanical design must consider manufacturing process, mechanical structure, material properties, theoretical mechanics, related professional hydraulics, pneumatics, jet flow, industrial automation control. The mechanical design covers a wide range.

Mechanical drawing is like a language of the machinery industry! And mechanical design is based on the mechanical language to play your imagination! to ease man's labor and serve humanity!

It is not difficult to learn drawing, it is easier to have a little spatial imagination.

It depends on the purpose of your study, yes.

Targeted learning. If you don't have a foundation, you have to start from the most basic, to learn to read drawings, some machinery-related work as long as you can read drawings can be done, such as general operators, some can't, if you want to engage in design technology-related work, but also for more in-depth learning, drawing, and related concepts. I graduated with a major in mechanical design, engaged in mechanical design, I have learned all the tutorials you mentioned, and now I use the "Mechanical Design Manual" the most.

Mechanical drawing is difficult to learn at first, but slowly understand, interested, it doesn't feel so difficult, you can understand the drawings after you can carry out drawing learning, commonly used two-dimensional drawing software CAD, three-dimensional soligworks, ug, proe, etc. can try to learn, the software is the same, basically two-dimensional and three-dimensional learning is the same OK, persevere! Hope it helps.

In fact, as long as there is one book, "Engineering Drawing", after reading it, you can understand the drawing.

Then do a set of engineering drawing assignments to ensure that you can draw simple drawings.

Look at (and practice) a UG to make sure you can draw on the computer.

You'd better find the parts and draw like this. Draw more, don't look up information.

For engineering students, it is a basic course. If you major in mechanical design, safety engineering, mechanical engineering, optical engineering, mechanical maintenance, automotive electronics and other engineering majors, you must learn basic mechanical drawing. For example, if you know mechanical drawing, you will quickly learn the simple software of CAD, and if you want to do interior design or mechanical design, architectural design, etc., you must use the most basic CAD software to make drawings, and you must learn to use software at least to understand the basis of drawings is to understand mechanical drawing.

It is important to have the opportunity to learn, one more knowledge, one more foundation, one more technology, and one more job opportunity. So the foundation is the most important.

Important, to engage in machinery must be able to produce drawings, mechanical drawing is the foundation, the language of the engineer, know that the language is not good, but also know how to use (drawing to know surface treatment, processing technology, material treatment, heat treatment, structural technology, etc.). We all learn Chinese, but can you write an essay on the Nobel Prize in Literature?

Importantly, it is the language of engineering, and through mechanical drawing, you can develop drawing recognition and drawing ability.

For machinery-related industries. Mechanical drawing is important.

All parts are expressed through drawings, which means that if you make a mistake or you can't understand the drawing, you won't be able to correctly understand the right to ideals.

parts in the can't communicate.

That is to say, if you want to communicate with people, watch the news, and enjoy poetry, but you can't write or know how to read, how can you communicate with people, watch the news, and appreciate poetry?

Important, if you can't even understand the drawings, you won't be able to mix it.

Industries that need cartography need basic knowledge, what is the foundation, you know !!

Mechanical drawing is the foundation of CAD, and CAD is the basic skill of engineers.

The main disciplines of mechanical design and manufacturing: mechanics and mechanical engineering. Main courses: Engineering Mechanics, Mechanical Drawing, Interior Mechanical Design.

Fundamental, Electrician & Electronic Skills.

technology, microcomputer principles and applications, mechanical engineering materials, manufacturing technology foundations. The main practical teaching links: including military training, metalworking, electrician, electronic practice, understanding practice, production practice, social practice, curriculum design, graduation project (**), etc., should generally be arranged for more than 40 weeks.

This major cultivates senior engineering and technical talents who have the basic knowledge and application ability of mechanical design and manufacturing, and can be engaged in design and manufacturing, scientific and technological development, applied research, operation management and operation and sales in the field of machinery manufacturing in the front line of industrial production.

I am a bachelor's degree in mechanical design.

Professional graduate, I.

The professional courses that du has studied are:

In terms of mechanics: theory on mechanics, material mechanics, fluid mechanics In addition, the important rights are: mechanical design, engineering materials, mechanical transmission control, electrical engineering, mechanical manufacturing technology, mechanical English, can only remember these, probably that's all, among which mechanics is difficult to learn, I think mechanics is the most difficult level. Hehe.

Theoretical Mechanics, Mechanics of Materials, Mechanical Design, Engineering Materials, Mechanical Transmission Control, Mechanical Manufacturing Technology, Mechanical English, CAD Technology, Mechanical Principles, Mechanical Drawing, Molds, Hydraulic Technology, Mechatronics. Remember this, you made the right choice to learn mechanics, at least you won't be unemployed.

The first few have missed an extremely important subject, that is, mechanical drawing, including hand-drawn paper and computer drawing. This is a must.

If you want to learn this course well, you must have a good understanding of mechanical principles and machining technology, and you must also have a certain grasp of GB, which is the basic requirement for employment after graduation.

In addition, it is also recommended to take courses such as cutting tools, metal cutting, single-chip microcomputer, pneumatic and hydraulic transmission, etc., which will be helpful for future design.

It is also necessary to understand the general knowledge of electrical knowledge and CNC programming knowledge, do not need to learn too fine, electrical knowledge to understand the characteristics and advantages and disadvantages of famous CNC systems such as Farak, Siemens 840D, Heidenhain, etc., CNC programming to master the basic operation of Farak G instructions and M instructions on the line, which is very helpful for future work.

I graduated in '07 and am now working on the design of CNC machining centers. My work experience tells me that other professional courses can be learned well in school, and the knowledge is not comprehensive, and I have to deepen my learning in practice after work.

Engineering Mechanics, Fundamentals of Mechanical Design, Electrical and Electronic Technology, Principles and Applications of Microcomputers, Materials for Mechanical Engineering, Fundamentals of Manufacturing Technology.

You're in several majors! You have said "CAD-aided graphic design", but it is only auxiliary drawing, tools, and basic professional knowledge.

CAD is the abbreviation of Computer Aided Design, and children in science and engineering have to learn this software, which belongs to the public basic course! But what you want to use in engineering construction drawings, mechanical drawings, home design drawings and other aspects of the corresponding major is: engineering construction drawings belong to the urban construction major (of course, different schools in this are divided into different disciplines and majors), mechanical drawing is a mechanical major (there are mechanical manufacturing, mechanical and electronic engineering, mechatronics and other majors), home decoration design should belong to a small branch of interior design. . .

Hope the above information is useful to you!

If you want to learn engineering construction drawings and home decoration design drawings, you can learn indoor or garden. Mechanical drawing is a little more difficult, to learn some majors in the mechanical department, such as automobiles and machine tools. Parts and the like.

According to what you mean it should be an interior design major.

Drawing is a skill that mechanical design engineers must master, that is to say, from mechanical draftsmen to mechanical design engineers in addition to excellence in drawing, but also to master other knowledge and skills, mechanical design engineer: mechanical major; Familiar with the general equipment and process flow of electronic product production; Familiar with PCB board design software and proficient in the use of AutoCAD and other mechanical design software; Familiar with PLC and other programming control technologies.

There is no doubt that your major is design, and because of this, you can apply for a mechanical design position in the unit without any worries, because you are studying design. You can talk about your ideas to the supervisor, and it is best to find a person at the level of chief engineer to recommend to you or give a briefing to the leader. If you are willing to study well and be appreciated by a certain technical cadre in the unit, this is crucial.