Sketching parts is hand-drawn, and drawing tools and instruments are not allowed. Drawing a sketch of a part is a part drawing with complete content and clear expression, which is drawn by hand according to visual method. You can't think that the sketch of a part is sloppy, so it is sloppy and not serious. The requirements and arrangements for sketching parts are as follows:

Drawing assembly drawing stage?

Draw the assembly drawing according to the sketch of the part, and use the A2 drawing with the scale of 1: 1.

(1) Measure and calculate the main dimensions of the assembly. Such as the dimension of the center distance between two gears, the positioning dimension from the transmission shaft to the bottom, the installation dimension, the overall dimension, etc. ?

(2) Draw the reference position line of each view and draw the manuscript. Sketch lines should be light and clear for easy reading and modification. ?

(3) Check whether it is correct, and make the sketch lines bold and deepened. ?

(4) Draw section lines (the section lines of two adjacent parts are in opposite directions, and the section lines of the same part in each view are in the same direction), and mark the assembly drawing size. ?

(5) Pay attention to technical requirements. The technical requirements in the assembly drawing shall be consistent with those in the part drawing. ?

(6) Write the part serial number, list and fill in the title bar. ?

(7) Comprehensive evaluation, review and signature.

Drawing part working drawing stage?

According to the sketch of the part, draw the working drawing of the part. The requirements for drawing working drawings of parts are as follows:

(1) The working drawing of parts shall be drawn with drawing tools and instruments, with regular figures and lines, which meet the requirements of national standards. ?

(2) The name, drawing format, proportion and material requirements of the part working drawing are the same as those of the part sketch.

Review, bind and write a summary report?

(1) After the drawing mapping is completed, it will be carefully reviewed again and again, and the students in the same group will review each other's signatures and make sure that they are correct before binding. ?

(2) Binding sequence: cover (refer to the following format), assembly drawing, part sketch and part working drawing.

(3) Write a summary report?

It is required to draw a schematic diagram of gear oil pump assembly and explain its working principle and function. This paper introduces the choice of view expression method of assembly drawing and its reasons. Explain the selection methods and reasons of surface roughness, tolerance and fit in technical requirements, main specifications, performance dimensions, overall dimensions and installation dimensions. , and summarize and report the experience and gains in the process of gear oil pump mapping in written form. ?