If you are new to machining, you know that there are different tools that you need for even one project. But aside from that, each tool will also have different types that are designed for specific applications and workpieces.
This is especially true when it comes to end mills. End mills are essential cutting tools used in milling machines to remove material from a workpiece. They come in various types, and they need to be used to create specific machining objectives and material applications.
So whether you are a professional machinist or a hobbyist, you need to understand the different types of end mills available that can help you choose the right tool for your machining needs. Here are some of the common types of end mills for sale and their specific uses.
Different Types of End Mills
Square End Mills
These end mills are the most common type of end mills and are widely used for general milling applications. They have a square cutting edge and are ideal for creating flat-bottomed slots, pockets, and other 90-degree corners. Square end mills come in various sizes and can be used for both roughing and finishing operations.
Ball Nose End Mills
Ball nose end mills have a rounded tip and are used for creating contoured surfaces, curved profiles, and 3D shapes. The rounded tip allows for smooth and gradual cuts, reducing the risk of chipping or splintering. Machinists use ball nose end mills commonly in mold-making, specifically in the aerospace and automotive industries.
Corner Radius End Mills
These end mills have a rounded corner on the cutting edge, making them suitable for machining rounded or fileted corners. They are often used in applications where a sharp corner is not required, such as machining molds, dies, and rounded profiles. Corner radius end mills provide increased strength and durability compared to square end mills.
Roughing End Mills
Roughing end mills are designed for removing large amounts of material quickly. They have multiple flutes and a coarse pitch, allowing for aggressive cutting and efficient chip evacuation. They are commonly used in roughing operations, where the focus is on material removal rather than achieving a smooth surface finish.
Finishing End Mills
Used for achieving a high-quality surface finish on the workpiece, finishing end mills have a higher number of flutes and a finer pitch, allowing for smoother cuts and improved surface finish. These end mills are commonly used in precision machining, where achieving tight tolerances and smooth surfaces is crucial.
High Performance End Mills
High-performance end mills are designed for demanding applications that require high cutting speeds, feed rates, and tool life. They are made from materials such as carbide or cobalt, and often feature specialized coatings for improved performance. High-performance end mills are commonly used in aerospace, medical, and automotive industries.
Tapered End Mills
These end mills have a tapered cutting edge and are used for creating tapered holes, chamfers, and angled surfaces. They are often used in applications where a gradual change in shape or angle is required, such as machining dovetail joints or creating angled features.
Which End Mill Should You Use?
Given the variety of choices, which end mill to choose depends largely on the workpiece goal, the cutting speed, feed rate, and the material that needs to be worked on. Different materials need different types of end mills, as they can have different levels of hardness and malleability.
For materials such as aluminum, wood, or plastic, you have to consider the flute count and diameter of the end mill, as well as the coating. For harder materials, you might have to consider a harder and more durable end mill made from carbide.
When purchasing end mills for sale, consider these factors too, along with the desired surface finish and the specific application requirements. Additionally, choosing reputable suppliers or manufacturers ensures the quality and reliability of the end mills.
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