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拉削涡轮叶片和压气机叶片榫头的组合拉刀,其安装孔和调整螺孔,孔距大(最大700),要求严(允许误差±0.1～±0.2)。孔距的保证,在拉刀制造中是个难点。以前,孔距都在淬火前直接按兰图尺寸作出,而忽略考虑拉刀在热处理过程中的伸长变形。结果,拉刀在使用时常常安装困难,甚至无法安装,需返工扩孔或在刀座上另想办法,造成很大浪费。为了
Broaching the combined blade of the turbine blade and the compressor blade tenon, its mounting hole and adjusting screw hole, large hole spacing (maximum 700), strict requirements (allowable error ± 0.1 ~ ± 0.2). Pitch to ensure that the broach manufacturing is a difficult point. In the past, the pitch of the holes was made directly on the size of the blue figure before quenching, while neglecting to consider the elongation deformation of the broach during heat treatment. As a result, the broach is often difficult to install and can not even be installed, requiring reworking or reworking on the knife holder, resulting in significant waste. in order to