Carbide V HSS surface finish in low carbon steel. скачать в хорошем качестве

Carbide V HSS surface finish in low carbon steel.

For a smooth finish with an HSS tool, the radius of the cutting tip should be a minimum of 1.5 times the feed rate per revolution, with a larger radius generally yielding a smoother surface. However, a radius that is too large can increase tool pressure and may not be suitable for all applications. It is also critical to adjust the speeds and feeds to match the tool's capabilities, ensuring a sharp tool and correct angles are used.  Tool and cut parameters Radius: A common starting point is a radius that is at least 1.5 times the feed rate per revolution. For example, if the feed is 0.002 inches per revolution, the minimum radius should be 0.003 inches. Some sources suggest doubling this for a more reliable result. Nose radius: A larger nose radius can help smear the surface for a better finish, but can also increase tool pressure, potentially leading to chatter. Tool sharpness: A sharp tool is essential for a good finish. Grinding the tool to a sharp point and then adding the necessary radius is recommended. Cut depth: Shallow cuts can sometimes leave a shinier finish than deeper cuts, but this can vary by material and tool. Feed rate: A slower feed rate with a higher spindle speed will result in a finer surface finish. How to achieve a smooth finish. Experiment with higher spindle speeds and slower feed rates for your final finishing. pass. Use a shallow cut: Make the final cut shallow enough for the radius to work effectively without plowing or tearing the material.Match the tool to the job: A slightly larger nose radius is better for finishing, while sharp-nosed tools are better for roughing or getting into corners.Use a "vertical shear" or round nose tool: These types of tools can produce a better finish than sharp-nosed tools. Practice with key stock: Practice grinding and shaping your tools on key stock before using your HSS tool bits, as it is cheaper and easier to learn with.