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A Guide to CNC Turning 

A Guide to CNC Turning 

CNC turning is an engineering process of creating an intricate shape by holding bars of solid in a throw and turning them while the cutting tool removes material until the ideal shape is accomplished. The form is accomplished by removing material. This process is also called subtraction machining.

The entirety of the work can be finished from one side whether the CNC turning center has just a single turret. Yet, some turning habitats have a central spindle and sub-spindle for quicker activity. The principle spindle partly machines the workpiece with this setup after which moved to the sub-spindle to finish the activity on the other side of the part. The speed of the CNC turning process makes it a perfect procedure for creating many pieces in a short period of time.

Benefits of CNC turning

 

CNC Machining is fast

In the 1970s, CNC machining started for mass production. As software applications and machines have improved,  it has become a rapid and reliable method to make complex shapes in rigid plastics and metal.

This speed has increased for both processing time and set-up. Initially, a three-dimensional part can be interpreted into a G-code cutting program using modern CAM/CAD design software, and then conveyed to a multi-axis mill surprisingly fast.

A good lathe or mill can whip through aluminums or steel after programmed with amazing speed, transforming a raw blank of metal into a completed part in minutes.

CNC Machining Requires no Fixed Tooling

Pressure die casting, or plastic injection molding, is the manufacturing process that uses rigid dies made of semi-hardened or hardened steel alloys. Often creating these tools can be very time consuming due to their level of complexity. Vacuum casting utilizes silicone molds which generally require a few days to create. This is worth doing for certain tasks, particularly while reproducing unpretentious surfaces duplicated from a master design. Yet, that can be a restricting factor on time-dependent jobs, where CNC machining makes a smoother and compliment surface for built parts.

CNC Machining is Accurate

In the advanced machine shop, there is no conventional method able to accomplish levels of precision and accuracy than with computer-controlled cutting instruments. This degree of accuracy regularly delivers tolerances of 50 microns or +0.05mm. This is more than accurately sufficient for most business applications. Furthermore, this is effectively accomplished repeatedly.

CNC Machining is Easy to Modify

CNC machining allows adjustments to be made by altering a few lines of the G-code program. This enables the machinist to promptly evaluate the outcomes, permitting the opportunity to test a few unique cycles, and for prototyping. Making refined alterations “on the fly” and tweaking a program can enormously decrease total item improvement lead times without including additional expenses.

CNC Machining Works with Many Materials

CNC machines are incredibly versatile with regard to what they are cutting.  As long as the material is inflexible enough not to soften or deform under the pressure of cutting, it can be used. This can help in item improvement, or when similar models with somewhat different cosmetic or mechanical properties are required. The same structure can be made in steel,  aluminum,  or inflexible plastic with just slight alterations made to the speed and feed of the device doing the cutting.

Applications of CNC turning:

CNC turning lathes are utilized to conduct operations such as the following:

·       Grooving

·       Knurling

·       Parting

·       Boring

·       Drilling

·       Facing

Select suitable machining conditions

The solid material to be processed, cutting conditions, and cutting apparatuses are all essential to the high-productivity metal cutting preparation, which includes instrument life, machining time, and quality of CNC machining parts. A practical CNC machine procedure must have the correct cutting conditions, cutting depth, cutting velocity, and feed amount. The tip temperature will increase with the cutting rate going up and potentially cause chemical, mechanical, and warm wear. An excess of feed speed will also cause a rise in temperature.

On the other hand, the service life of the CNC machine is directly related to processing heat, noise, machined parts dimensions, and other factors in the actual CNC machine operations. Select suitable settings depending on the cutting state, hardness, cutting depth, materials, feed amount, and the actual situation. For instance, a rigid blade or coolant can be utilized for CNC turning stainless steel parts.

The safety rules about CNC machining

The risk for injury to operator or machine exists when working with any sort of machinery.  Here are some basic safety precautions to consider when working with a CNC machine.

·       Before the machine stops running, don’t take away the driven shield.

·       Don’t implement irregular CNC lathe tasks.

·       Don’t experience the CNC machine procedure during an explosive situation.

·       Think of to remove the chunk keys while it does not work.

·       If you do not know the process fully don’t operate the machine.

·        Keep your hand away from tools and turning parts during the functioning condition.


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by Brian Perry // Brian Perry is a contributor to Businessing Magazine.

Opinions expressed by contributors are their own.