Reduce tooling setup time— install the holder once and alternate Lathe Tools Names And Uses 7d between applications by switching out the bit. DCMT- A counterbore having multiple cutting edges is commonly used. A facing tool removes metal tols its side cutting edges. A parting off tool lathe tools names and uses 01 normally forged and used as bits for cemented carbide tipped tools. The amount of projection of the cutting edge of the tool from the centre of the bar determines the finished hole diameter of the work.

It can enlarge the hole quickly and process it in the proper size to fit other components correctly. Chamfer is a transitional edge between two faces of an object, also defined as a form of the bevel.

The chamfering tool is used to create a bevel or furrow on the part. A chamfer can be used to smooth sharp or hazardous edges on a workpiece. Knurling tools are used to produce knurled lathe parts, through creating or pressing a pattern onto a round section, used as a grip for a handle, also usually created on fasteners like nuts.

A knurling tool is designed with a specific pattern. A parting tool refers to a narrow-bladed tool used in turning or planing or for cutting a piece in two, or defined as a tool used for cutting off pieces from the main body of stock being machined, it is manufactured in many forms. Thread cutting tools are used to cut a thread on the lathe part. In external thread cutting, the piece can be held in a chuck or mounted between two centers, in internal thread cutting, the part is held in a chuck, the tool moves across the part linearly, taking chips off the workpiece with each pass.

Forming tools are made flat or circular in shape when used in the lathe. Simple forming tools have cutting edges ground to the shape of the groove, undercut, or thread to be cut. Integral type: the head and rod of the cutter are made of the same material, which is generally high-speed steel.

The rigidity of the cutting tool is good, which is suitable for small turning tools and non-ferrous metal turning tools. Welding type: it is connected through the welding process, the cutter head and rod are made from different materials, the carbide insert is inlaid on the rod. If you want to make the screw with threads, you can also do that with external threading tools. Lastly — we have parting tools. Parting tools are also very important, and do much more than their name implies. These tools can part, groove, and cut off workpieces while offering a consistent, smooth finish.

You might also hear about left hand, right hand and neutral hand tooling. That describes how the cutting tool faces the workpiece and what direction your lathe is spinning he work piece. Normally our lathe will be spinning clockwise. This is also always included in the lathe tooling designation, which you can find engraved into the side of your tool.

The cutting angle is so ground that it can withstand maximum cutting pressure. Turning tool is used to remove the very small amount of metal. A tool angle is so ground that it can produce a very smooth and accurate surface.

Straight turning tools are also used as a chamfering tool when the cutting edges are set at an angle of the chamfer. Where a large number of chamfer works are to be performed a special chamfering Lathe Tools Names And Uses Of tool with its side cutting edge angle ground to the angle of the chamfer is used. A square shoulder is turned by a knife-edge turning tool or facing tool. A bevelled shoulder may be turned by a straight turning tool having a side cutting edge angle and zero nose radius.

A filleted shoulder is turned by a straight turning tool with a nose radius corresponding to the fillet radius of the work.

Metric, B. Its cutting edges sharpened to the shape and size of the thread to be cut. The shape of the tool is determined by the included angle at the nose of the tool which should correspond to the angle of the thread.

W threads. The size or cross-section of the cutting edges of the tool depends upon the pitch of the thread. Below figure illustrates an H. So for machining different screw threads having different pitches separates tools are used to produce accurate threads. The nose of the tool is pointed, flat or rounded according to the shape of the root of the thread. The side clearance of the tool for cutting square thread is of prime importance in order to prevent the tool from interfering or rubbing against the vertical flank of the thread.

The cutting edge of the tool is exactly similar to an external thread cutting tool but the front clearance angle is sufficiently increased as in a boring tool. The tool is a forged type orbit type and held on a boring bar. The point of the tool must be set square with the work. A facing tool removes metal by its side cutting edges. So no top rake in necessary in a facing tool. The figure shows H. The length of the tool is , ,, and mm and the nose radius varies from 0. Grooving tool is similar to a parting-off tool illustrated in the figure.

An ordinary lathe turning tool may sever the purpose where a copying attachment is used to reproduce the form of a template.

Flat forming tools are made of two types:. These tools have their cutting edges ground to the shape of the groove, undercut, or thread to be cut. Flat dovetail forming tools have a wider cutting edge corresponding to the shape desired. Dovetail end of the tool is fitted in a special tool holder. These tools are preferred in production work as a very long cutting surface can be used resulting in longer tool life.

The centre of the tool is set slightly above the centre line of the work to provide an effective front clearance angle on the tool. The tool will rub against the work if the centres are of the same height. Regrinding is done by grinding the flat only.

A boring tool is similar to a left-hand external turning tool so far its cutting edge is concerned. The tool may be a bit type inserted in a boring bar or holder, or forged type having a tool shank. The figure shows an H. A boring bar is made of mild steel with slots or holes cut into it to accommodate the tool bit which is locked by an Allen screw.

The amount of projection of the cutting edge of the tool from the centre of the bar determines the finished hole diameter of the work.

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