Can the bearings used in the design of mechanical equipment be used as part drawings?
(4459.7 GB/T 1998) for the following provisions: (1) the basic regulations and general characteristics of drawing, drawing, drawing in the various provisions of symbols, rectangular wire frames and contour lines are drawn with thick lines. When drawing a rolling bearing, the size of the rectangular frame and the outline of the outer frame should be consistent with the shape dimension of the rolling bearing (found in the manual) and the same proportion as the drawing. In the cutaway view, when drawing the rolling bearings by the universal drawing and the characteristic drawing, the section symbols (section lines) are not drawn. When drawing with the prescribed drawing method, the rolling body of the bearing does not draw a section line, and each ring can be painted in the same line section with the same direction and spacing, as shown in Figure a. Such as bearings with other parts or accessories (such as eccentric sleeve, tight sets, retaining rings, etc.), the profile line should be in line with the ring profile in different directions or different intervals, as shown in Figure B. Omission is not allowed in drawing without misunderstanding.
Roller bearings do not have to draw part drawings. In assembly drawings, rolling bearings can be drawn in three different ways. These three methods are universal, descriptive and descriptive. The first two kinds are simplified drawing methods. In the same drawing, only one of these two simplified drawing methods is adopted. For the three kinds of law, the national standard "mechanical drawing representation of rolling bearings."
(2) general drawing in section view, when there is no need to exactly express the contour of rolling bearing, load characteristics, structure characteristics, can be rectangular wire frame and cross shaped sign is located in the central line frame upright said cross symbol should not contact with the rectangular frame line, as shown in figure a. The general drawing is drawn in the same way on both sides of the shaft, as shown in Figure B. (3) characteristic drawing and prescribed drawing. The characteristic drawings and rules for rolling bearings are listed.
