Zhejiang Vocational Skills Examination Outline for College Admissions: Mechanical Theoretical Knowledge

The Zhejiang Provincial Education Examination Authority has organized and formulated the following programs for machinery, computers, secretarial work, chemical industry (environmental protection), pharmacy, construction, cooking, tourism services, clothing, accounting, electronics and electrical engineering, commerce, foreign trade, medical nursing, and agronomy. The "Zhejiang Vocational Skills Examination Outline for College Admissions" and other 15 major categories serve as the basic basis for the propositions and performance evaluation of the Vocational Skills Examination for College Admissions in Zhejiang Province. The following is the mechanical category (theoretical knowledge) of the syllabus for the Vocational Skills Examination for College Admissions in Zhejiang Province.

1. Exam syllabus description

(1) Exam format: written test

(2) Exam time: 60 minutes

(3 ) Score distribution:

1. Mechanical drawing recognition 60 points;

2. Mechanical basics 60 points;

3. Parts measurement and quality control technology 30 points point.

(4) Exam question types

Multiple choice questions, judgment questions, short answer questions and analytical calculation questions.

(5) Exam ability requirements

Understand, understand, master and apply

(6) Reference materials

1. Zhejiang Province The new curriculum reform textbook "Mechanical Drawings" (Second Edition) for Mechanical CNC Major in Secondary Vocational Schools (Higher Education Press).

2. Zhejiang Province Secondary Vocational School Mechanical CNC Major’s new curriculum reform textbook "Fundamentals of CNC Machining Machinery" (Second Edition) (Higher Education Press).

3. The new curriculum reform textbook "Parts Measurement and Quality Control Technology" (Second Edition) for the Mechanical CNC Major in Zhejiang Vocational Secondary Schools (Higher Education Press).

Remarks: The relevant drawing standards in the examination syllabus refer to the following requirements

(1) Surface roughness GB/T 131-2006

(2) Benchmark GB/T 1182-2008

2. Exam content and scope

Mechanical drawing reading

(1) Basic knowledge and skills of drawing

1 . Master the basic provisions of the national standard "Mechanical Drawing" regarding drawings, proportions, fonts, drawing lines, and dimensioning.

2. Understand the analysis methods and drawing steps of simple plane graphics.

(2) Basics of projection

1. Understand the types and characteristics of projection methods, understand the orthographic projection method of points, lines, and planes, master the projection rules of three views, and master basic geometry Three views and dimensions.

2. Understand the concepts and properties of intersection lines and intersecting lines, and master the drawing methods of intersection lines and intersecting lines of simple shapes.

3. Understand the drawing methods of isometric drawings and oblique diaxial drawings, and be able to draw isometric drawings of simple shapes.

4. Understand the basic requirements, dimensional standards and types of dimensioning of combinations, master the projection drawing and reading methods of combinations, be able to mark the dimensions of simple combinations, and be able to draw views and lines .

(3) Basic representation of patterns

1. Master the basic representation of patterns.

2. Master the drawing and annotation of sectional views and cross-sectional views.

3. Understand other representations of patterns.

(4) Special representations of commonly used parts and standard parts

1. Understand the relevant regulations of commonly used parts and standard parts.

2. Understand the drawing regulations and markings of threads, keys, and gears.

(5) Parts drawings and assembly drawings

1. Master the reading methods of part drawings and the reading of surface roughness, dimensional tolerances and fits, geometric tolerances and other technical requirements method.

2. Able to read part drawings of medium complexity.

3. Understand how to read assembly drawings.

Mechanical Basics

(1) Commonly used metal materials

1. Understand the mechanical properties and indicators of carbon steel.

2. Master the classification, grades, properties and selection of carbon steel and alloy steel.

3. Understand the classification, grades, properties and selection of cast iron.

4. Understand the classification, properties and applications of non-ferrous metals.

5. Master the classification, properties and applications of cemented carbide.

(2) Common heat treatments

1. Understand the common heat treatment methods of steel.

2. Understand the application of common heat treatment processes for steel.

(3) Mechanical transmission devices and parts

1. Understand the function, classification and structure of shafts.

2. Understand the types and applications of bearings, key connections, threaded connections, and couplings.

3. Understand the types and application characteristics of belt drive, chain drive, gear drive, worm drive, and screw drive.

4. Be able to calculate the basic parameters of spur gears.

5. Understand the classification of gear trains and master the calculation of the transmission ratio of fixed-axis gear trains.

6. Understand the types and applications of plane hinge four-bar mechanisms; understand the applications of cam mechanisms.

(4) Hydraulic and pneumatic transmission devices

1. Understand the working principles of hydraulic and pneumatic transmission.

2. Understand the functions and related symbols of hydraulic and pneumatic transmission components.

Part Measurement and Quality Control Technology

1. Understand the meaning of interchangeability, be able to calculate the limit dimensions, deviations and tolerances of parts, and judge the fit properties.

2. Master the types and meanings of geometric tolerances.

3. Understand the types of commonly used measuring tools and master the measurement methods of linear dimensions of parts.

4. Master the common measurement methods of triangular threads.

5. Understand the common measurement methods of trapezoidal threads.

6. Understand the basic methods of quality control, understand the application of value control charts, and master the calculation of process capability index.