ABF MFG Group Inc

CNC Machining

CNC Machines: Full form of CNC Machines is Computer numerical control machines, where the machines are being given commands to the driving components like motors and that motion are transmitted to lathe and milling beds, heads, and tail stock for producing desired movements mechanically.

The motive of the CNC machines is to produce parts in mass quantity, get higher precision work. Safer operation. While it is running, the labor will not require to pay attention to it once it is set-up. Basically, it can save the labor cost unlike manual machines, where it can only be run while the machinist is present.

The main CNC machines were created during the 1940s and 1950s and depended on a typical media transmission information stockpiling innovation known as “punched tape” or “punctured paper tape.” Punched tape innovation is long old as the information medium immediately progressed to simple and afterward computerized PC preparing during the 1950s and 1960s. As new advances and improved computerized preparing power get presented, CNC machines keep on improving their proficiency.

There are various types of CNC Machines, CNC Milling, CNC Turning center, CNC Routers, CNC EDM, CNC Punching and CNC boring Machines.

The basic concept of all the machines is same, it works on the G-code programming, made by various CAM software such as Master cam, Gibs cam, fusion 360, solid cam, feature cam, NX cam, power mill. Rhino cam, solid edge.

CNC Milling: Milling machines has Vertical milling machines and horizontal milling machines. They come in different sizes, shapes, 3 axis, 4 axis, 5 axis and 6 axis. They also come with pallets systems which is productive for mass production and multiple set-ups at the same time. There are also different controls based on the make of the CNC Machines such as Fanuc control, Mazak control, Haas control, Mitsubishi control and many more. But the basic working principle and programming will be same for all.

CNC Turning: CNC turning has a lot of different varieties such as screw turning machines, multi spindle and multi turret lathes. They also come in different lengths and lot of different attachments. Such as three jaw chuck, four jaw chuck, different collets for different shapes of bars. CNC lathes or CNC turning centers comes in 2 axis, 3 axis, 4 axis configurations.

CNC router: CNC routers are made usually for flat sheets or plate work of Aluminum. These machines are only for light materials and their beds are usually large in sizes. They can be used to machine the long extrusions of frames or long aluminum plates for aerospace parts. On routers, 2d machining is being done all the time.

What we serve:

Our facility has CNC Milling Machines, CNC router, CNC Wire EDM, CNC turning centers of different capacity. We also have the turning centers with bar feeders and screw machines too.

Our capacity to turn the bars is 24.0” of the Bar diameter and about 30.0” long. In lathe department, whereas our milling capacity of the plant is 80.0” long x 20.0” in height x 25.0” wide.

machining extrusionHere is the picture of the lathe on which we can turn up to 24.0” round bar and up to 60.0” long in size. this Lathe has a two turret with live tooling on it, which makes it unique and flexible for complex parts (side operation such as tapping, grooving, milling Hex, threading etc. this type are mostly suitable for mass production of the screw products.

machining extrusionThe above image shows the 6-axis turning center, where the head moves in three direction, plus the spindle itself rotates in both directions up to 90 degree. The tail stock and head stock spindle rotate in both clockwise and counterclockwise direction and turret moves along z axis and x axis also. This type of machines helps to reduce the set-up for holes at angle as well as easier to do 3D machining. This machine reduces set-up and load unload time to do complex jobs.

machining extrusionThe above image shows the CNC vertical Milling machine (VMC), with the bed capacity of 80.0” long x 30.0” wide and 22.0” tall machining capacity which is pretty good for long and wide parts. We can even do multiple programs because we can mount multiple fixtures at the same time and can use different work offset for each set-up.

Advantages and disadvantages of CNC’s:

Advantages:

Requires less skilled machinist, and more semi-skilled worker or no skilled worker for production once it is set-up which reduces labor cost.

Do not need to pay attention for entire period of machining.

Can achieve higher accuracy, because it has better driving members than manual machines which means, the timing and axes movement lead screw has higher accuracy which lead to achieve higher accuracy.

They are good for repetitive work, or job.

Sometimes, it can be keep running for whole shift of 8 hours it still depends on type of job and the automation is being used for it.

Disadvantages:

It has higher capital investment.

Higher maintenance cost

Require hiring a skilled supervisor who has knowledge about specific CNC Machine in some cases, such as Mitsubishi control.

Need to buy a licensed CAM software and a CNC programmer to program the new parts or change the existed part design.

At last, all these will drive the creation cost lower and make CNC machining a reasonable cycle for RM. Future work will underline coding and programming that works inside the computer aided design framework to make a programmed framework and accomplish the objective of fast assembling.

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