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最近我们加工了一批3/4英寸(外径26.75mm)U形钢管弯头,半径特别小(R=40mm),加工比较困难,经反复试验,制成了如附图所示的简易烘弯装置。图中底座8的下部,焊有35×35mm的斜方铁,供插入铁砧方孔用。固定铁7与滚轮5和底座8焊成一体。滚动轮3,通过活动轴2与推把一相连,当推把绕着固定滚轮轴头φ28旋转时,活动滚轮3则绕活动轴作同步旋转。这样,就可加工出光滑平整的∪形管。其基本
Recently, we processed a batch of 3/4 inch (outside diameter 26.75mm) U-shaped steel pipe elbows with a very small radius (R=40mm), which is difficult to process. After repeated trials, we made a simple bake as shown in the figure. Bending device. The lower part of the base 8 in the figure is welded with 35x35 mm orthorhombic iron for insertion into the square hole of the anvil. The fixed iron 7 is integrally welded with the roller 5 and the base 8 . The scroll wheel 3 is connected to the push handle through the movable shaft 2. When the push handle rotates around the fixed roller shaft head φ 28, the movable roller 3 rotates synchronously around the movable shaft. In this way, a smooth, flat bowl can be machined. Its basic