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How do people in society teach themselves mechanical major?
The courses of mechanical specialty system include the following courses. Self-study can start from various specialized courses:

1. mechanical drawing and CAD: basic course of technology. Mainly teach projection drawing and mechanical drawing, so that students can master the basic principles and methods of correct orthographic method and be familiar with the national standards of mechanical drawing. To cultivate students' graphic ability, drawing reading ability and imagination ability of spatial shape, students are required to skillfully draw working drawings and assembly drawings of mechanical parts with certain complexity, and correctly mark dimensions, tolerances and surface roughness according to given requirements. Proficient in computer drawing, master the application of computer-aided drawing software.

2. Engineering mechanics: mainly teaching statics, kinematics, dynamics and material mechanics. In statics and kinematics, students can understand the basic laws of mechanical motion of objects and learn to use these laws and methods to analyze and solve mechanical problems in engineering practice; In the part of material mechanics, students can master the knowledge of strength, stiffness and stability of components, calculate the strength and stiffness of components skillfully, and have strong hands-on ability.

3. Fundamentals of mechanical design: Mainly teach the motion and dynamics analysis of commonly used mechanisms and the design of commonly used mechanical parts. This course enables students to master common mechanisms and have the ability to analyze mechanical motion and dynamic performance; Master the knowledge of general mechanical parts, have the ability to analyze, select and design mechanical parts and mechanical transmission devices, and have the ability to consult and use relevant information.

4. Metal technology: mainly teaching the source of metal materials, mechanical properties, heat treatment of crystalline structural steel, common engineering materials, casting, forging and welding. Make students understand the characteristics and application of various forming methods of mechanical parts blank; Master the properties of common engineering materials and metal heat treatment methods; Ability to select materials, blanks and analyze the manufacturability of blank structure.

5. Tolerance fit and measurement technology: Tolerance part mainly teaches tolerance fit, form and position tolerance, combination of surface roughness and taper, thread combination, key connection, cylindrical gear tolerance and linear dimension chain of smooth cylinder. Through the comprehensive training of big homework, let students master the concept of tolerance and cooperation; Understand the provisions of tolerance standards; Correctly explain and mark the tolerance standards commonly used on drawings; According to the principle of tolerance selection, reasonable tolerance fit can be selected and determined by analogy.

6. The measurement technology part mainly teaches the knowledge of measurement technology, the detection of smooth workpieces and the design of smooth gauges, and the measurement of threads, keys and cylindrical gears. Make students understand the types, application scope and detection methods of commonly used measuring instruments, and design limit gauges and position gauges. Through experimental teaching, students have the ability to correctly select and use commonly used measuring instruments on site and comprehensively test mechanical parts.

7. Hydraulic and pneumatic technology: mainly teach the relevant knowledge of hydraulic transmission, hydraulic components, basic hydraulic circuits and typical hydraulic systems, so that students can be familiar with the working principle and selection methods of commonly used hydraulic components; Be able to refer to the manual to read the hydraulic transmission system diagram of the equipment; Through comprehensive experiments, master the analysis and elimination methods of common faults, and have certain debugging and design ability of equipment hydraulic system.

8. Electrical control technology: mainly teach troubleshooting methods for common low-voltage electrical appliances and relays of common metal cutting machines; The working principle of programmable controller and the method of forming control circuit with programmable controller. Enable students to skillfully read the schematic diagram of programmable control circuit of common machine tools. It has a certain ability to analyze its common faults, and can use programmable controllers to form more complex control circuits.

9. Metal cutting principles and cutting tools: mainly teach geometric angles and cutting elements, cutting tool materials, cutting deformation, cutting force, cutting heat and temperature, tool wear and durability, and reasonable selection of tool geometric parameters. , so that students have the ability to reasonably select various tools, determine the geometric characteristics of tools, select cutting parameters and design standard tools according to technological requirements.

10. Machining equipment: mainly teach the basic knowledge of machine tool structure performance, transmission, use and machine tool design, so that students can master the basic knowledge of machine tools. Train students to correctly select, reasonably use, maintain, install, debug and accept common machine tools, and have the preliminary ability to modify machine tool parts and design special machine tools.

1 1. Mechanical manufacturing technology: mainly teaching process planning and design, typical parts processing technology and comprehensive analysis of quality, productivity and economy, etc. Enable students to master the theoretical knowledge of machining technology, understand the conventional technology and applicable advanced technology of typical parts processing, and have the ability to compile and implement process regulations, analyze and solve process problems.

12. fixture design of machine tools: mainly teaching the positioning mechanism, clamping mechanism and special fixture design of workpieces. Make students master the positioning and clamping principle and error analysis method of workpiece, be familiar with the structural characteristics of typical machine tool fixtures, and have the ability to design general complex machine tool fixtures.