2 kinds of gear punching dies: general and precision punching dies related instructions

Two kinds of gear punching molds: general and precision punching molds are described below respectively for reference.

1. Ordinary punching die

The figure below is the structure diagram of a common punching die.gearPart modulus m=0.165mm, tooth number z=32, tooth thickness s=0.26mm, material thickness t=0.18mm, material grade HPb63-3.

此模具在4t冲床上使用。工件装在凸模4的定位销6上，以中心孔定位冲齿形。冲齿凹模19固定在凹模座9上，用定位销14和螺钉8固定在上模座7上。凸模4固定在下模座1上，用销子和螺钉固定。上下模相对运动靠导柱2导向。传力杆15，通过打料杄12由横梁打出工件。冲齿废料经凸模下落胀裂而散落。

2. Precision punching die

There are two types of commonly used ring gear press plate fine blanking dies, one is the fixed convex-concave mode fine blanking die, and the other is the movable convex-concave mode fine blanking die.The picture below shows the punching die with active convex-concave mode.

The main components of this lumpy fine-blanking die are mounted on the die base, and the position of the upper die to the lower die is determined by the guide post guide device.The die 13 is tightly pressed in the die seat ring.The die seat 9 is fixed in the upper die seat by the conical surface, screws, and pins. The pushers 10 and 12 are installed in the die 13, and the back pressure is supplied by the machine tool, and is transmitted to the pusher through the pressure pad 3 through the force transmission rod 6. Pieces device 12.The binder ring 15 is pressed into the binder ring seat 17 with its outer cone.The blank holder is positioned with a conical surface, and is fixed in the lower die seat with screws and pins.There is no ring gear on the blank holder, and it is made into a flat shape.The position of the male and female mold 16 is fixed by the edge holder, and the ring gear pressing force is provided by the machine tool and transmitted through the lower part of the mold base.The same pressure acts on the pusher via the force transmission rod 24, the bridge plate 21 and the ejector rod 18.