3 The inner and outer rings of the selected bearing 3.1 edge can be seen from Figure 1. The inner and outer ring edges of the bearing have an arc r, and as a convex and concave die, there must be a sharp edge. Therefore, it is necessary to The arc r of one side of the cutting edge is ground away, and it is only necessary to grind the thickness of the surface on the surface grinder. Previous page next page LED underwater lights add
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3.2 Grinding the die parameters C
As shown in Fig. 2, in order to make the punched or blanked workpieces fall smoothly, the lower end of the die hole must be ground larger. If the outer ring of the bearing is used as a concave mold, the parameter c=1~l.5mm can be ground, as shown in Fig. 2a; if the bearing shell is used as a concave mold, the angle parameter α=3°～5° should be ground, see Fig. 2b . 3.3 Grinding the assembly chamfer As shown in Fig. 2, the inner ring of the bearing as the punch is ground on the outer side, and the inner arc r is also worn away. In order to make the inner and outer sleeves of the bearing as a punch mold riveted together with the mold shank, a chamfer 3×45 must be ground on the inner side thereof, as shown at A in Fig. 2a, and the bearing inner casing and the mold base as the female mold are used. Riveted together. If the inner sleeve of the bearing is used as a female mold, the inner sleeve of the bearing can also be fixed by a set screw, as shown in Fig. 2b.
3.4 Working Dimensions of the Die The gap between the convex and the concave molds is determined according to the thickness of the punched steel sheet, etc., and the working size of the punching or blanking projections and the female mold is calculated according to the gap. The working dimensions of the convex and concave molds are ground in the selected bearing and the outer casing.
Application of inner and outer rings of waste rolling bearings in blanking die (2)