Face milling cutter: It is used to process plane on vertical milling machine, face milling machine or gantry milling machine. There are cutter teeth on the end face and circumference, as well as coarse and fine teeth. Its structure has three types: integral type, insert type and indexable type.

Saw blade milling cutter: used to process deep grooves and cut off workpieces, with more teeth on the circumference. In order to reduce the friction during milling, there are 15’~1° secondary deflection angles on both sides of the cutter teeth. In addition, there are keyway milling cutters, dovetail milling cutters, T-slot milling cutters and various forming milling cutters.

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End milling cutter: used for processing grooves and step surfaces, etc. The cutter teeth are on the circumference and end surface, and cannot be fed along the axial direction when working. When the end mill has end teeth passing through the center, it can feed axially.

Cylindrical milling cutter: used for processing planes on horizontal milling machines. The cutter teeth are distributed on the circumference of the milling cutter. According to the tooth shape, they are divided into straight teeth and spiral teeth. According to the number of teeth, there are two types: coarse teeth and fine teeth. The helical coarse-tooth milling cutter has few teeth, high tooth strength and large chip space, suitable for rough machining; fine-tooth milling cutter is suitable for finishing.

DeepTri-Drill is a successful line of indexable insert gun drills that provides productivity and application security for drilling deep holes, while ensuring easy tool management by eliminating the need for regrinding. The drill line now offers a new FH3135-grade guide pad that was developed specifically to enhance thermal crack resistance when machining with water emulsifiable oils.

Nowadays, the technology of CNC milling machine is constantly developing and its functions are more perfect. Therefore, everyone has higher requirements for milling cutters on milling machines. There are many commonly used types of milling cutters according to their purposes.

To meet this challenge, Tungaloy has expanded its DeepTri-Drill guide pad options to include the FH3135 grade. Guide pad rupture is primarily induced by an increase in density of thermally-induced microcracks generated on the substrate due to poor lubricity and thermal capacity when machined with soluble oils. The dedicated carbide substrate of the FH3135 guide pad provides enhanced resistance to fracture and thermal crack, significantly reducing the risk of guide pad breakages. In addition, the new guide pad features a double-chamfer geometry on the corners of both ends assisting a smooth entry into the guide bushing or pilot hole, inherent when machining on dedicated gundrilling machines. This reduces vibrant impact on the guide pads and the risk of rupture.

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Drilling process using a self-guiding tool to produce deep, precise holes. High-pressure coolant is fed to the cutting area, usually through the gundrill’s shank.

Finishing method by means of compressing or cold-working the workpiece surface with carbide rollers called burnishing rolls or burnishers.

Replaceable tool that clamps into a tool body, drill, mill or other cutter body designed to accommodate inserts. Most inserts are made of cemented carbide. Often they are coated with a hard material. Other insert materials are ceramic, cermet, polycrystalline cubic boron nitride and polycrystalline diamond. The insert is used until dull, then indexed, or turned, to expose a fresh cutting edge. When the entire insert is dull, it is usually discarded. Some inserts can be resharpened.

The tribological conditions during gun drilling between the guide pad surfaces and the wall of the hole being drilled are far more severe than those during other applications. To ease this harsh condition and maximize guide pad life, it is crucial to use cutting fluids with high lubricity in order to prevent dry rubbing and seizure at the burnishing contact areas. For these reasons, straight cutting oils have long been preferred among manufacturers in gundrilling operations for its high lubricity. However, in today’s environmental conscious machining, the call for eco-friendly water emulsifiable oils, more commonly known as soluble oils, are increasing over conventional petroleum-based coolants. These soluble oils have lower lubricity than straight oils and can adversely affect the guide pad quality during gundrilling.

Three-sided edge milling cutter: used for processing various grooves and stepped surfaces, with teeth on both sides and circumference.

Milling cutter is a kind of rotary cutter mainly used for machining planes, steps, grooves, forming surfaces and cutting off workpieces on milling machines. When working, each cutter tooth intermittently cuts off the margin of the workpiece. There are several common types of milling cutters, such as cylindrical milling cutters, face milling cutters, end mills, face milling cutters, angle milling cutters, saw blade milling cutters, and T-shaped milling cutters:

Angle milling cutter: used for milling grooves at a certain angle, there are two kinds of single-angle and double-angle cutters.

Cylindrical sleeve, typically made from high-grade tool steel, inserted into a jig fixture to guide cutting tools. There are three main types: renewable, used in liners that in turn are installed in the jig; press-fit, installed directly in the jig for short production runs; and liner (or master), installed permanently in a jig to receive renewable bushing.