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众所周知,焊接式硬质合金刀具在使用时存在裂纹、崩刃和硬度下降的缺点,在YT 类硬质合金的公制螺纹车刀中更严重。在大量生产中。有时因连续发生裂纹与崩刃,而使刀具供不应求,影响均衡生产。1984年我们用第二汽车制造厂自行研制的可转位正前角螺纹车刀,取代传统的焊接式硬质合金螺纹车刀车削套管叉螺纹。刀具结构如图所示,其几何参数:γ=12°,α=α=8°,
As we all know, welding carbide cutting tools in use there are cracks, chipping and hardness of the shortcomings of the YT cemented carbide metric thread turning tools more serious. In mass production. Sometimes due to continuous cracks and chipping, leaving the tool in short supply, affecting the balanced production. In 1984, we used the second car manufacturer’s self-aligning positive rake angle thread turning tool to replace the traditional welded carbide thread turning tool for turning the casing thread. The structure of the tool is shown in the figure with the following geometric parameters: γ = 12 °, α = α = 8 °,