What Are the Different Cartographer Jobs?

Use drawing instruments to draw drawings according to the original drawing; draw regular drawings and other technical drawings according to sketches and technical descriptions; drawing systems to draw drawings; manage drawing files.

Cartographer

Persons who use drawing instruments and equipment to draw front drawings (original drawings), base drawings and other technical drawings according to the design plan, sketches and technical instructions of the project or product.

Occupational level: This occupation is divided into four levels

The contents of the draftsman's examination include basic requirements and job requirements. The content of the examinations is increased by grade, that is, the intermediate level contains the primary content, and the advanced level contains the primary and intermediate content.

basic requirements:

I. Professional Ethics (No test)

Second, the basic knowledge

1. Basic knowledge of cartography

(1) Including map width, scale, font, line, and dimension

(2) Use and maintenance of common instruments for drawing such as triangular plates and compasses

Projection method

The concept and application of center projection, parallel projection, oblique projection, orthographic projection

3. Basic knowledge of computer graphics (on-computer exam)

4. Basic knowledge of professional patterns

5. Knowledge of relevant laws and regulations (not tested)

The above contents are all tested at all levels, but the proportions are different. They appear in multiple choice and judgment questions.

Work requirements:

I. Elementary

1. Basic knowledge

2. Draw Ink

Use of drawing tools, drawing procedures, steps, drawing modification methods (selection, judgment)

3. Knowledge of three views

Familiar with the knowledge of the three views

4. Knowledge of mechanical expression methods

Methods for drawing views, sections, and cross-sections (gives a perspective view of the assembly, draws a multi-faceted projection view, or makes a full section and a half section)

5. Knowledge of dimensioning

The dimensioning of planar two-dimensional graphics or three views is mainly the dimensions of the plan. It is required to master the national standard of dimensioning, the direction and position of numbers, the method of labeling elements such as circles, arcs, balls, etc., the method of labeling repeated elements, the composition of dimensioning (four parts of dimensions) (correction)

6. Basic knowledge of threads

Thread drawing (including inner, outer, convolution drawing), annotation, concept and annotation of structural elements

7. Basic knowledge of parts drawings: shaft and disk parts drawings.

Requirement of complexity: (1) Shaft parts: the number of views is not less than 2, the number of structural shaft segments is not less than 3, and there are key grooves, chamfers and undercuts. (2) Disk parts: a combination of no less than two views and no less than two coaxial basic bodies, with through holes, bosses, grooves, chamfers, and undercuts. The number of sizes is not less than 15. It is required to be able to read and draw a certain view, and to become a basis for finding the size of a direction. Technical requirements: No less than 4 roughness, no less than 3 levels, to be able to explain the meaning and judge the level of the level; the number of tolerances is not less than 2, to be able to explain the meaning. (Read the part drawing, draw a view, fill in the blanks)

8. The basics of drawing isometric drawings

The basic characteristics of isometric drawings, the angle between the axes, the coefficient of axial deformation, and the issues that should be paid attention to when drawing isometric drawings (selection, judgment)

9. Knowledge of picture file management

Method for copying drawings, requirements for folding drawings, method for binding drawings (selection, judgment)

Intermediate

1. Basic knowledge

2. Knowledge of transforming the projection surface at one time

Axisless projection of points, lines, and surfaces, capable of drawing oblique and oblique views

3. Knowledge of Intersecting and Intersecting Lines

Intersection line: The cylinder is cut by the parallel plane of the projection surface. Intersecting lines: the intersection of cylinders, cones, and spheres with orthogonal axes. When the cylinder, cone, and sphere intersect, the axis passes through the center of the sphere. The number of basic shapes (including the inner surface) is less than 3.

4. Knowledge of the three views of the assembly and the expression method of the parts

Reading and drawing ability. Candidates can draw specified full-section and half-section views according to the known views of the assembly. The complexity of the shape is intermediate, and it must have an internal structure with more than two intersections and intersects.

5. Prescriptive drawing for threaded connections

How to draw bolts, studs, screws, and fasteners (Examination form: supplement missing lines in the complete joint picture, or give the correct picture of the wrong picture)

6. Knowledge of dimensioning of part drawings (including: labeling of chamfers, undercuts, fillets, and uniform holes)

The degree of complexity is the same as that of the primary parts drawing (the number of dimensions is 10 ~ 15)

7. Knowledge of parts drawings: brackets and cabinets

Complexity: (1) Brackets: The number of basic views is not less than 3. The structure includes the bottom plate support structure, working parts, and with threaded holes, bosses, grooves, and cast fillets. (2) Boxes: the number of views is not less than three, and the main structure must have boxes, bottom plates, connection holes, positioning holes, bosses, grooves, and threaded holes. Medium difficulty. Note: The number of dimensions should be no less than 20, and the main datum in three directions should be found. The surface roughness symbol is not less than 5 (including the rest), and the level is not less than 4. It is required to be able to explain the meaning and be able to be marked. The number of tolerances shall be no less than 3, and the meaning shall be explained and marked.

8. Plot Isometric Isometric

Able to draw isometric drawings based on the three views of the plane solid (without curved surface) (excluding general location planes)

9. Describe the basic knowledge of positive second test and oblique second test

Angles between axes in two-square test and two-square test, deformation coefficient (selection, judgment)

10. Graphic file management (selection, judgment)

Third, advanced

1. Basic knowledge

2. Knowledge of intersection lines

Intersection: Cut off the intersection of a cylinder and a cone with a plane (vertical) at a special location, and cut the intersection of a sphere with a plane parallel to the projection plane. Intersection: The intersecting line of cylinder, cone, and sphere orthogonally intersects the sphere and passes through the center of the sphere.

3. Knowledge of the three views of the assembly and the expression method of the parts (difficulty, examination questions are the same as intermediate)

4. Knowledge of standard parts and common parts (gear)

Except for the thread, the basic concepts of gears, parameters, calculations, and prescribed drawing methods are presented. Multiple choice questions appear.

5. Knowledge of part drawing sketches

Knowledge of surveying and mapping, methods of visually measuring the size of parts, and freehand drawing skills. Use of measurement tools and the application of sketches. (Multiple choice)

6. Knowledge of assembly drawings

Reading method, the assembly has about 5 parts. Disassemble the part drawing according to the assembly drawing. (1) Draw a view of a part for a complex shape. Make a part drawing of a part for a simple shape. (2) Understand the assembly drawing. , Determine the disassembly sequence (fill in the blank question) (3) the meaning of limit, fit, tolerance (fill in the blank) (4) the type of size.

7. Knowledge of axonometric drawings

Draw a solid with a circle or arc in one direction. Axonometric section drawing, drawing method of axonometric drawing after sectioning, drawing method of section line (selection)

8. Knowledge of drawing file management

Definition of mechanical products and components, definition of drawings, definition, classification and numbering of parts drawings and assembly drawings (selection)

Computer drawing content:

I. Elementary: Can draw simple two-dimensional diagram and dimension (can output view)

1. Initial environment settings: picture frame, title bar and basic parameters, font, size, layer settings.

2. Draw simple flat graphics, including sectional views of profiles. Simple wired graphics and arc-connected graphics can reflect the ability of computer graphics, and some graphics must be dimensioned.

3. Draw three views, reflecting the ability to draw a projection map and dimensioning.

Second, intermediate: can draw simple two-dimensional professional map

1. The initial environment setting is the same as the primary

2. Slightly complex 2D drawing (arc connection) and dimensioning, medium complexity.

3. Draw three views, copy the existing two views, and supplement the third projection.

4. Part drawing: The number of views is required to be no less than two, and the size is about 20, and the complete part drawing and various annotations are required to be drawn. Technical requirements (no picture frame, title bar)

Third, advanced: can draw assembly drawings based on parts drawings, can draw parts drawings based on assembly drawings

1. Basic requirements are the same as elementary

2. The drawing of complex two-dimensional graphics is difficult

3. The number of parts is less than 5 and the expression of each part does not exceed 3 views. Draw a part drawing

4. Assemble an assembly drawing based on the given part drawing