1. Analysis of parts The bearing seat is a part of the sliding bearing (component). The bearing seat and the bearing cover are used together to support the shaft. The bearing seat needs to be processed on various machine tools such as planer, drilling machine, boring machine or lathe, and the clamping position changes greatly. At this time, it can be considered to be placed according to the working position. Because the main view of the assembly drawing is generally restored according to the machine or part of the tomb, such as the assembly drawing of the sliding bearing. Therefore, the main view of the part is drawn according to the working position, which can be directly compared with the assembly drawing. Therefore, when the assembly drawing is drawn from the sketch of the part, or the drawing of the part is disassembled according to the assembly drawing, it is very convenient to see the drawing and draw the drawing. Therefore, when the main view of the part conforms to the working position, it is easy to compare with the assembly drawing, and it is convenient to draw and view the drawing. Parts such as supports and boxes are generally placed according to their working positions.

2. Select the main view Select the A-direction main view that can reflect the shape and characteristics of the bearing housing in the three-dimensional view, and make its placement position consistent with the assembly drawing.

3. Select other views and determine the expression scheme. In addition to drawing the front view, the bearing housing should also draw a top view to express the bearing The width of the seat, the position and shape of the left and right bosses, and the number and position of the mounting holes and connecting holes. In order to express the internal structure of these holes, the front view can be drawn in half section. This leaves only the shape of the pit at the bottom unclear. At this time, the partial view can be used to supplement the expression (expression scheme 1), or the stepped section method can be used to draw the left side view of the half section (expression scheme 2). Among these two expression schemes, although expression scheme 1 is simple to draw, generally for more complex parts, the basic views should not be too few, and the use of a half-section left view can also help to express the shape features of the bearing seat more clear. In contrast, it is better to use the expression scheme 2.