QC/T 1-2017General requirements for automotive product drawings (English PDF)

5.2 Assembly drawing

5.2.1 Each assembly shall generally draw a separate assembly drawing.

5.2.2 The assembly drawing shall clearly express the followings.

a) relationship between parts, structure and assembly that make up the assembly;

b) main assembly dimensions and tolerances;

c) dimensions, limit deviations, surface structures, etc. that need to be machined during assembly;

d) technical requirements for the assembly.

5.2.3 The parts and sub-assemblies that make up the assembly are generally marked with a leader line in the drawing. Fill in the item numbers in the parts list. Or directly mark the part number on the guide line in the drawing. If there is embedded software, the software number is filled in the parts list. However, the number of the sub-assembly and its subordinate parts shall not appear on the assembly pattern at the same time.

5.2.4 If an assembly consists of a complex part and another part that is simple in structure and size, it allows the shape of the simple part to be drawn on the complex part pattern with fine double-dotted lines. The assembly drawing composed of these parts are no longer drawn, but the structure, contour, dimensions, technical requirements and assembly relationship with the simple parts shall be clearly expressed. The information of the complicated parts is filled in the title bar, and the information of the assembly is filled in the extended title bar.

5.2.5 The assembly of the left and right, front and rear, and up and down symmetrical assemblies is the same as the requirements of 5.1.3.

5.2.6 When the parts of the assembly are combined and connected by changing the shape or bonding, the deformation or bonding position in the view shall be marked with the lead line (such as flange, pipe expansion, shop equal) or in the technical requirements.

5.2.7 The electrical diagram assembly diagram generally includes the mark symbol status table, connector model, pin definition, performance parameter table, and schematic. Graphical symbolic description is allowed.

5.6

5.6.3 The product or part that the structure is basically the same, only the individual elements (such as the number of holes, the number of slots, the position of the holes or slots) are different, when drawing the table drawing, shall separately draw the partial graphics of the differences. And in the table column that indicates the graphic, mark the corresponding mark codes to the partial graphics.

5.6.4 The view of the table drawing shall select a more appropriate specification in the table. Draw in scale or sketch.

5.7 Alternative drawing

5.7.1 Parts that can clearly express the composition with the text or the text and partial view can use alternative drawing.

5.7.2 When it is necessary to reassemble the assembly of different group numbers or group numbers specified in QC/T 265 into a large assembly, an alternative drawing is allowed. The drawing number is compiled according to the group number of the larger component or the assembly within the group number.

5.8 Schematic

5.8.1 The connection between input and output shall be marked and it shall clearly indicate the functions of the product and the working procedures.

5.8.2 Graphic symbols (codes) shall comply with relevant standards and regulations.

5.8.3 The movable part of the component shall be drawn in the normal position.

5.8.4 A description of the function of each link shall be noted, and the complex product can be divided into schematics.

5.9 Wiring drawing

5.9.1 The drawing of the wiring drawing shall comply with relevant standards and regulations.

5.9.2 The circuit number and azimuth number of each component connected to each other in the system shall be indicated. If necessary, note the wiring line specification and color.

5.9.3 Automotive product can use several sub-wiring drawings to form a total wiring drawing. If necessary, indicate the location and requirements.