The tool in the photo on the right is a milling tool. Milling tools can be divided into two types ; one is face milling which machines the workpiece surface and the other is endmilling which performs slotting shoulder milling etc.. Machining modes that use facemills and endmills are called milling operations, and its main characteristic is that the tools rotate. The machine used for milling is called a milling machine.

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For use with a lathe boring holder, milling machine, jig bore, CNC lathe, etc., the Aloris adjustable-insert boring bars are available in 4 popular sizes ranging from 1/2"  to 1" shank diameters. They are offered as single units or in a set, saving up to 7%. All boring bars are products from high quality heat treated steel.

Next, the pressed compacts are placed in a sintering furnace and heated at a temperature of about 1400°C,resulting in cemented carbide.

Carbide formed into different configurations are the most popular, and they are called indexable inserts. Indexable inserts are used for various shapes of holders and selected according to shape of the workpiece and cutting mode.

Also, hardness of cemented carbide is at a level between diamond and sapphire and weight is about twice as iron. Then, how do we cut this hard cemented carbide?

External holder and internal boring bar produce round shaped workpieces. Machining processes that use holders or boring bars is called turning, and its main characteristic is that workpieces rotate.

First, mix tungsten carbide with cobalt to make powder which can be classified as raw materials. The granulated mixture is poured into a die cavity and pressed. It gives a moderate strength like that of chalk.

Today cemented carbide tools have become a primary means for increasing metal cutting productivity, while research constantly develops new products for more accurate and faster machining to reduce manufacturing costs.

An adjustable "throw away insert", boring bar designed specifically for through boring, facing or boring to a square shoulder or any lead angle. Fast, accurate positioning of the replaceable insert is accomplished by the simple adjustment of the positioning socket set screw and the locking flat head socket cap screw while the bar is mounted on the machine.

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As mentioned above, cutting mode is composed of three main styles ; turning, milling, and drilling. By choosing an appropriate cutting tool according to the cutting mode, hard metals can be machined efficiently.

First, let's look at some examples of cutting tools that are in our daily life. Knives and graters in the kitchen, scissors and pencil sharpeners on the desk, and a saw and plane in the storeroom are all cutting tools.

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There are many ways to machine metals, but the most commonly used method is cutting. Here we are going to learn about cutting tools and cutting processes. What do we mean by saying cutting tools?

These cutting tools share a common property which is that they all change shapes of things by cutting and producing chips.

The figure on the right shows the condition of a cutting edge during machining. The cutting edge cuts the workpiece and chips are produced. The temperature at the top of the cutting edge becomes as high as 800°C because of impact and friction.

The photo on the right is a tool that produces circular holes in workpieces and is called a drill. Indexable insert type drills and brazed drills produce relatively large holes and solid drills produce smaller holes. The main characteristic of drilling is that it can be used for both milling and turning machines.

As you know by now, cutting tools are tools that cut things to acquire a desired shape. Cutting tools in our daily life cut fruits, vegetables, and wood, but the cutting tools produced by Mitsubishi Materials cut harder materials such as steel.