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About CNC Machining and PRATIC Machining Center

Time: 2020-05-19 Source : PRATIC CNC

In a traditional sense, CNC machining refers to only a few of these automated processes: namely milling, drilling, tapping, turning, boring, grinding, routing, chamfering, etc.


Milling

It is an operation where the cutting tool rotates. When the milling tool comes into contact with the workpiece, it removes chips from it.

Milling operations include:

End milling

Chamfer milling

Face milling

It is a very universal fabrication method with great accuracy and tolerances. Milling is suitable for a variety of materials and is also very quick. The ability to manufacture a wide range of complex parts is a great advantage.

The disadvantages include a large amount of waste, need for a variety of tooling and high cost of equipment.

Drilling

While milling equipment can also produce holes, drills are meant for only that job.

The difference? While milling tools use cutting edges around the cutting head’s periphery, drills use the tip of the tool to produce a hole.

CNC drilling machines are commonly used to automate this job, provide better accuracy and a more cost-effective solution.

Tapping

Tapping is the process of cutting a thread inside a hole so that a cap screw or bolt can be threaded into the hole. Also, it is used to make thread on nuts.

Tapping is an easy, well known and highly efficient manufacturing process. This method offers productive and economical threading, especially for smaller threads, through reduced machine downtime, higher cutting speeds and longer tool life. Forming taps and cutting taps come in different designs. The material, coating and geometry of the tap are very important features to be considered for each tap style. A tap design for a specific area that works well for one material or application may not be effective for another material or application. Tapping covers the most common thread profiles and is suitable for all kinds of machine types with both rotating and non-rotating components.

Turning

While the two are often called just CNC machining, turning and milling have distinct differences. Turning, or lathing is pretty much the opposite of milling. This means that instead of the cutting tool, the workpiece is rotating.

CNC lathing is commonly used for producing shafts, for example. The tool is brought against the rotating workpiece to cut off bits of metal, known as chips or swarf.

Turning is usable on the outside of a cylinder or on the inside. The latter operation is called boring.

Boring

In machining, boring is the process of enlarging a hole that has already been drilled (or cast) by means of a single-point cutting tool (or of a boring head containing several such tools), such as in boring a gun barrel or an engine cylinder.

Like turning, boring uses a stationary, non-rotating cutting tool to remove material from a workpiece. What’s the difference between turning and boring exactly? With turning, a cutting tool removes material from the external surface of a workpiece. With boring, a cutting tool removes material from the internal surface of a workpiece. In other words, boring essentially involves drilling holes in a workpiece using a cutting tool that resembles a drill bit.

Grinding

CNC grinding machines use a rotating grinding wheel to remove material. The objective is to give a high precision finish to a metal part.

The achievable surface quality is very high. Therefore, it is used as a finishing operation rather than creating the final piece from raw materials.

Routing

CNC routers are seemingly similar to CNC milling machines. Here also the rotating piece is the cutting head. The main difference lies with the materials suitable for cutting.

Routers are a perfect fit for cutting softer materials (not metals) that do not require very high accuracy. The reason for that is its lesser output power.

At the same time, routers are quicker. Therefore, they are able to produce the parts in less time.

Chamfering

Chamfering is making a small cut, usually at a 45 degree angle, to remove a 90 degree edge. Chamfering is used in metalworking, woodworking, glass cutting...

Chamfering removes the burrs and sharp edges, and thus makes the handling safe. Chamfering can be done by a form tool having angle equal to chamfer which is generally kept at 45°.

The form tool used for taper turning may be also used for this purpose. Chamfering is an essential operation after thread cutting so that the nut may pass freely on the threaded work piece.

PRATIC CNC Machining Centers

PRATIC CNC Machining Centers can realize most of above functions of milling, drilling, tapping, routing and chamfering by being retrofitted with different tools. Therefore most of your machining needs can be satisfied well once you have one PRATIC CNC Machining Center.

Because of it is multi-functional and multipurpose, PRATIC CNC Machining Center is widely used in various industries such as auto parts making, aircraft parts making, rail transit facility making, home appliance making, military equipment making, mold & machinery parts making and so on...

PRAITC CNC Machining Center is the king machining center of cost performance !

Choose PRATIC, get best ROI ! Choose PRATIC, Be Successful in CNC Machining !

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