Customized First Punch Die,Punch Die Forging Die for Bolt,First Punch Die for Screw,First Punch Die Chongqing Henghui Precision Mold Co., Ltd , https://www.citool.com High-precision, high-hardness, large-area planar machining parts have always been a key component in the heavy-duty industry. The key to solving this problem is the need for large surface grinders or rail grinders. In the past, we often used abrasive belt grinding after Milling or planing to solve the roughness problem of large-plane machining. This method is inefficient and cannot achieve high precision. With the emergence of new ceramic tools, the emergence and application of cubic boron nitride tools