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The operators of the present-day CNC cutting machine demonstrate many of the same skills as those possessed by various traditional craftsmen. The operators of the CNC cutting machine include the men and women who design and make cabinets, woodwork, signs, and a whole range of metal, solid surface and plastic objects. The manufacturers who employ these operators know how important it is to have a good quality CNC cutting machine.

A good quality CNC cutting machine has a cutting table that covers the area bounded by a length of four feet and a width of eight feet. A quality table can handle satisfactorily a standard 4 x 8 plate of metal, wood, plastic, glass, or stone. A table that lacks a sufficient length or width will make it necessary for the operator to repeatedly reposition the plate. Operators of the CNC cutting machine refer to such repositioning as indexing.
A good basic CNC cutting machine does both plasma and oxyfuel cutting. Refinements on a basic cutting machine might provide it with the ability to perform other functions, functions such as:

-spotting holes for drilling
-drilling aluminum
-cutting a shape in the sides or end of tubing
-routing wooden shapes.

Other modifications on a CNC cutting machine might be directed at installation of the equipment for laser or water jet cutting.
The selection of a CNC cutting machine will be primarily determined by the nature of cutting that will be performed by the machine operator. For some operations, it will be necessary to do only straight cutting. For other operations, the cutting machine must perform bevel cutting. Bevel cutting allows the operator to trim, reduce, shave, and pare the material in the plate.

Both types of cutting will subject the CNC cutting machine to a fair amount of wear and tear. The manufacturer therefore needs to purchase a machine with adequate customer support. Such support should include the availability of spare parts. An absence of spare parts could require that the electronics of the CNC cutting machine undergo a retrofitting.

A need for retrofitting would deprive the operator of important production time. The need for retrofitting would diminish the quantity of goods that could be sold to the consumer. The need for retrofitting leads to a decrease in the amount of time that the operator will be spending at the CNC cutting machine. That is why the availability of spare parts for a malfunctioning CNC cutting machine remains one of the two chief concerns of the manufacturer. A second prime concern is the size of the cutting table.
The operator of a CNC cutting machine that needs to spend a large percent of time indexing will not have much time to spend on the actual cutting. Hence, the manufacturer will have much less product. Fewer products from the manufacturing facility translate into fewer products on the shelf. Consequently, the need for operators to spend time indexing can prove a detriment to the company’s bottom line. A good sales volume reflects the well-planned purchase of a CNC cutting machine.

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Ever since the industrial revolution started, the demand to create precise instruments and products is an important factor in large scale manufacturing. Belts, screws, Drills and all movable parts needed to create other products in the assembly line must all be exact and compatible, thus extra care must be taken in order to ensure that all moving parts match perfectly. Computer Numerical Controlled programming has become an extremely important part of this process.

Computer Numerical Controlled Machines are useless without any programming. CNC?s rely on pure hard codes in order to execute commands that the Machine Operator wants to do, therefore not only is it needed to learn the mechanics of the whole Computer Numerical Controlled Machine but it is also at the utmost importance that the Machine operator knows how to communicate with the machine, and that is by using G-codes.

Preparatory code/ functions or much commonly called as G-codes are functions in the Computer Numerical Control programming language. The G-codes job is to manage the position of the tool as well as control the step by step commands during the actual work. Basically the G-codes are the most important part of the Computer Numerical Control Programming algorithm.

There are other codes involved in the programming of CNC?s such as M-codes that manages the machine, T-codes for managing the tools, and F-codes for the tool feed and tool speed controls. All of these codes are created in a Computer Aided Manufacturing (CAM) software.

G codes as well as the others use the RS-274D as the recommended standard for the Computer Numerical Controlled Machines. This standard was developed by the Electronic Industry association during the 1960?s. These standards provide a basis for the creation of Computer Numerical Controlled Programs.

First designs of these standards came from punched paper tapes as the medium standard for data interchange, but now ASCII character bit patterns are the standard for the representation.

G-Codes

Lets discuss the g-codes further, as what I have said earlier G- codes constitute only a part of the Computer Numerical Control Program, in the whole programming algorithm, they are denoted by the letter G, Basically it is a code telling the machine what kinds of actions to perform in a step by step basis, examples of these actions would be rapid move, controlled feed moves that would bore holes, a work piece cut routed to a specific dimension, change a pallet, and set a tool information such as offset.

After creating each part of the codes, the algorithm is compiled in the Computer Aided Manufacturing (CAM) software. The CAM software basically use translators called post processors to output the code optimized for a certain machine type. Often times, post-processors are often used to allow users to enable further customization.

G-codes can also be used to create outputs for Computer Aided Design systems used to design printed circuit boards (PCB). Any software must be customized for each type of machine tool that it will be used to program. Some G-codes are written by hand for volume production jobs.

Some Computer Numerical Controlled machines use conversational programming. Conversational programming is an easier way to program CNC machines because it is more ?user friendly? because it uses a wizard like program that hides the G-codes into plain view. Some Popular examples of this kind of CNC machines are the Southwestern Industries? Proto TRAK, Mazak?s Mazatrol, and Mori Seiki?s CAPS conversational software.

Conclusion

With these kinds of further sophistication in programming Computer Numerical Controlled Machines, it is expected in the future that programming would be much easier for its machine operators.

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Originally posted 2009-12-18 21:23:45. Republished by Blog Post Promoter

I am building a case for my pc and wanted some Dimensions on width highth etc. okay i have my basic Dimensions but what makes me coserned is the expansion slots. how do i measure that. i havent bought my motherboard yet im just building a multipurpose case. i want my case to be made out of plexiglass and i have a cnc router and my plan is to make big case but i dont know stuff like ?the back how do i know where my video card sits and sound output or power suply. like i said i want to make a multipurpose case. Any help lol

Originally posted 2009-11-06 15:07:18. Republished by Blog Post Promoter

Computer numerical controlled machines are very common when it comes to precision machining. The term is often abbreviated to CNC and means that the machine is controlled by a computer. Precision machining is the act of creating detailed tools that are required to make parts for machines and technology. CNC machines are used to precision machine sophisticated tools that create complicated parts for modern day technology. CNCs are found in many different places these days including performing work as lathes, milling machines, laser cutters, abrasive jet cutters, punch presses, press brakes, and other industrial tools.

In the past precision machines were built on a bespoke basis to suit the exact requirements of the tool builder customer. However today because the machine can perform many different operations they are built for stock or for later sale. A CNC machine costs approximately £50,000 for a vertical centre and £5million for a flexible machine system for engine blocks.    

Precision Machining and Quality Control

Precision machining is all about accuracy, the tools they are making needs to be perfect in shape, size, and dimensions down to the millionth of a cm. The quality control within a machining centre is built in from design through to delivery and set up. Not only is the precision machine highly quality controlled but the training and instruction to the operator is in-depth and controlled as well.

The misuse of a precision machine can lead to an unintentional collision of work with the tool which leads to a crash, machine crashes can result in tool damage or machine failure. All CNCs are shipped and delivered with special handling from the manufacturer and are set up by qualified and fully trained technicians. The original correction factors are recorded for later reference and complete programming, operation, and maintenance manuals are provided. CNCs have changed the precision machining industry dramatically and the future of CNC machines is exploding.

Manufacturers, which produce various steel products, require punching of sheet metal to meet design requirements. Technology has entered the scene of this once manually operated process. This not only increases the speed of production but it gives a new meaning to the term “accuracy” in the positioning of the specific operations. This has been accomplished with the introduction of CNC or computer numerically controlled machining centers.

Punching of sheet metals is a steel fabrication process utilizing ‘tools and dies’. A punch press is the machine which performs the work of shaping and cutting. A turret houses a set of various tools on the machine, depending on the type of punching required.

The punch press, a type of fabricating machine, presses sheet metal against a die with extreme pressure and at very rapid speed of positioning. Sheet metal, now pushed into the die, assumes the shape and design of the specific dye. Cut away, is any excess metal from the newly shaped piece of sheet metal.

Punch presses use hydraulic, pneumatic, or electrical power in their operation. This power exerts immense pressure to press the shape into and perform the cutting of the metal. A piece of sheet metal receives its new form from the taking away of material. Less sheet metal makes a new form. The excess taken away becomes scrap metal for other uses.

A CNC operated punch press typically performs this manipulation process. CNC stands for computer numerical controlled. In the case of a punch press, it utilizes a computer in its operations. The computer directs the action of this press, which contains the tools and their respective dies.

This machine receives different punching instructions from a program written and installed in the computer for a particular application. This enables the machine to go through a complete machining cycle, using various tools and automatically positioning the sheet metal over the appropriate die, at very rapid speeds and with little operator intervention. The accuracy of this process is measured in thousandths of an inch.

A manually operated punch press, for simple punching, with one tool and die set, are still in use today. Large operations with multiple dies and unique specifications rely on the CNC application.

The die portion of a punch press is of very fine tolerances. These are tolerances of thousands of an inch. Pressing sheet metal into a die with a punch means the die does the actual cutting of the metal. The punch, attached to a ram, is a removable piece, as is the die portion.

The die set for sheet metal punching consists of a male punch and a female die. When brought together, with the application of intense pressure, the result is a sheet metal piece as per the specified design.

Punch presses using CNC technology have meant greater volumes of sheet metal production. This process spells efficiency for a company, which means greater profits. This edge is necessary in the competitive steel fabrication companies worldwide find themselves.

Today, there are turret punch presses, CNC types, which perform faster because of technological advances. They can operate unattended and have sheet metal sorting capabilities. New technology constantly raises the mark for performance. Wise steel fabrication companies invest in these applications if it means streamlining of their operations for maximum profit.

Today’s CNC controlled machines can even alert workers who are off-site if something goes wrong in a sheet metal punching process. This allows for unattended “lights out” production capabilities for manufacturers. Telecommunications technology embedded in these computer systems links to users’ phone devices. In essence, CNC technology provides a constant watch over machining of steel.

The use of robotic applications in steel fabrication, including punching, receives continued research and application. Advanced, state-of-the-art CNC technology is the solid future of most fabrication industries.

CNC stands for Computer numerical control. Just about every business that operates a manufacturing machine will usually have a cnc programming service operating it. The basic function of a cnc programming service has a cnc machine running it. The cnc machine is an automatic, precise, and consistent motion control mechanism. In the past, most automated machines needed someone to stand by the machine to make sure it was lined up properly and made sure that it repeated a certain function that is required from the machine. For a better explanation, I’m going to use the example the website I researched for this information used to make things a bit more clear. A drill press is used to machine holes, this is a repetitive motion, however, a person must stand over the machine to line up the drill with the holes and make sure the drill stays lined up. A person is required to do something every step of the way. However, a person can only do so much, and as production grows so will the amount of “holes” so to speak, and the operator will eventually find it hard to keep up. In order to create more production, a cnc programming service and set up can be added. The cnc machine can do everything that an operator would be required to do. Once the machine is setup and running, it can take the place of the operators, the cnc machine is so easy to run, the operators tend to get bored during lengthy productions.

The cnc machine or course can do much more complicated operations that require much higher skill levels. A cnc programming service can improve automation so much that most of the time operator intervention can be reduced or all together eliminated to do other things. The second benefit is that cnc programming services and technology is consistent and accurate and once the program is verified, the machine will run efficiently and consistent, no matter how many work pieces need to be produced. A third benefit offered by most forms of CNC machine tools is flexibility. Since these machines are run from programs, running a different work piece is almost as easy as loading a different program. Once a program has been verified and executed for one production run, it can be easily recalled the next time the work piece is to be run. This leads to yet another benefit, a fast change over. Since these machines are very easy to setup and run, and since programs can be easily loaded, they allow very short setup time. Rather than applying completely mechanical devices to cause motion as is required on most conventional machine tools, CNC machines allow motion control in a revolutionary manner. All forms of CNC equipment have two or more directions of motion, called axes. These axes can be precisely and automatically positioned along their lengths of travel. If you need more information about cnc programming services there is a lot of information about it online.

NEED INFORMATION SITE ON HOW TO WORK WITH COMPTER NUMBER CONTROLL MACHINE ALSO KNOW HAS CNC HELP ME

How I can build my own CNC machine and operate it by computer?

Originally posted 2009-10-03 17:17:39. Republished by Blog Post Promoter

what does a Computer Numerical Control (CNC) Programmers and Operators do?

CNC Routing (Computer Numerical Control) is where a computer-controlled, routing mill is used for intricate or large volume production runs where a high standard of replicated product is required. CNC routing may be used for metal milling but it is more commonly used for woodworking and cabinetry manufacture though other materials such as plastics and nonferrous metals can be worked on also.

A CNC router is able to deliver an extremely standard of accuracy and provide excellent detail. As it is largely a computer-controlled process, the milling is carried out at high speed and the whole production line is capable of producing repetitive cuts providing a very high standard of product finish.

CNC routing is recommended for customers who are looking for high-volume production jobs where there is a lot of repetition and identical unit production, or single-unit customers who need a very high degree of detail which may not be available cost-effectively where a human operator is required to make the cuts. As the CNC router is programmed with the cuts and milling scheme, customers are also able to use the program for a production run, quickly change the program to perform a different production run and then use the previous program again and again for future production runs. This helps to keep the different production runs extremely similar in terms of reproduced design (practically identical if near-matches to the raw material being milled is adhered to) and this also helps keep production costs down even further.

Typical CNC routing jobs include engraving, customized cabinetry cuts, large production jobs with repetitive cuts, creating through holes and blind drilling and of course, routing. CNC routing produces signs which are a much better alternative to sand-blasted signage and especially if you do not want any textured surface exposed to the elements and which will attract dirt and grime. CNC routed signage is widely used for historical markers, golf courses, building names, internal room and area signage, markers for residential and commercial development and typically employs channel cuts (known as “hog-out” in the trade) to produce one-piece, high quality product.

Less well-known uses include making military shields and emblems; monuments and historical markers; boat and marine environment signage as well as dedication signage. While the materials used in the construction of these more esoteric products may not be wood, they do provide a good mental view of how CNC routing can help a client to use non-wood materials where either use or environment precludes wood from being used.

Ordering a CNC routed product is simple and easy – the design files are created either by you or your designer and provided to the milling partner who will conduct the work. They take the design as a computer file which is known as a “vector file” – this saves information in a format which the machine understands and can interpret to reproduce the design using the raw materials. The CNC router then cuts the “blank” which is the exact shape of the finished product and it is passed through a priming and sanding process and will have the backing material which will be the color of the finished product detail. An adhesive coating is applied which coats the entire blank and needs to be left to “cure” or set. Finally, the CNC router makes the cuts and milling procedures to remove the coated material to expose the underlying material which will form the finished design once the protective film is removed.