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Archive for the ‘CNC’ Category

When To Shove People Out To Make Way For CNC

Posted Friday, December 25th, 2009
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The normal businessmans mind is always geared towards profit, profit, profit. No matter how much the company spends, at the end of the day, the revenues should exceed the expenses (including tax). Although innovation is a major requirement to a business’ growth, many small-time businesses just lie back in comfort. They think that as long as they’re earning and they have a steady market, its all right.
This holds true for businessmen who are contented with being small-time (though it’s hard to find one). However, for businesses that are aggressive towards getting ahead, acquiring a CNC machine seems to top their list of priorities.
CNC stands for Computer Numerical Control. A CNC machine is a computer “director” which is composed of machine tools that read a specific set of instructions (in G-code) and is able to direct certain manufacturing tasks repetitively. The top industries that use the CNC (more…)

What It Takes to be a CNC Operator

Posted Friday, December 25th, 2009
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Being a CNC operator may seem a little too easy but take a look at the requirements from companies and you’ll think twice about the difficulty level of being a CNC operator.
Being a CNC operator takes a lot more than just being able to handle long hours of staring at the monitor or creating an input stack for the programs. What it means is that you have to have outstanding programming capabilities and at least basic machining knowledge.
Job Requirements
A CNC operator has to be knowledgeable about blueprint reading. This is because, basic design concepts and construction is hinged heavily on blueprints. Furthermore, the components that are being manufactured by companies that have CNC machines are based on blueprints of a whole structure. Therefore, if you do not know how to read blueprints, you won’t know what to program the machine to do.
Another thing that (more…)

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Are you good with computers and looking for a job? Well then, consider being a CNC machine operator. Its usually easy, full-time and the name isnt intimidating, right?
If you think that being a Computer Numerical Control (CNC) machine operator may be a bit out of your reach, think again. You dont have to be a math wizard or a programming genius to get that position. But dont jump in just yet! There are a few things that you have to know (and consider! ) before applying for the job.
The first thing that you have to understand is the abbreviation CNC. According to an online encyclopedia, CNC stands for Computer Numerical Control, and refers specifically to a computer controller that reads G-code instructions and drives a machine tool, a powered mechanical device typically used to fabricate components by the selective removal of material. CNC does numerically directed interpolation (more…)

Understanding CNC

Posted Friday, December 25th, 2009
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Have you ever asked yourself how machines in a factory know exactly when to stop making the parts theyre supposed to make? Well, this is all because of Computer Numerical Control (CNC). But to understand CNC, you have to know what Numerical Control (NC) is.
HISTORY
NC machines were first introduced after the 2nd world war as mass production became the trend. These machines were given a set of instructions in punched cards. However, these machines were hard-wired and their parameters were difficult to change.
These NC machines still required a great deal of human intervention. To illustrate this point, try to take a look at a drill press. A lot of actions have to be taken in order to manufacture a product. The process is actually so complicated that a person has to do something almost every step of the production process. This created an avenue for (more…)

The Different CNC Machines

Posted Friday, December 25th, 2009
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CNC has different applications depending on the machines that operate on it. So if you’re a budding operator, you should know the most common machines that can operate on CNC.
Milling
Milling machines are common CNC machines. These devices are used in the shaping of metal and other solid materials. It is basically a rotating cutter and a table. Milling machines are capable of complex toolpaths as the cutter is not limited to a sideways movement but allows for an in and out motion. This movement is precisely controlled by moving the table and the cutter relative to each other. Cutting fluid is then pumped in to lubricate and cool the cut and to remove any swarth that is generated by the cut.
Lathes
Lathes are machines that perform different operations such as sanding, cutting, knurling, deformation, or even drilling. These machines work by spinning various solid (more…)

The CNC Family

Posted Friday, December 25th, 2009
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You might have not heard of the CNC before, or what it does, or how it makes lofty manufacturing operations a lot easier. However, CNC machining is dubbed as one of the most important factors of most production processes. The common tasks CNCs machines usually perform are drilling holes, tool changing, cooling and lubrication of separate factory machines at the same time.
Lets start with a brief introduction. CNC stands for Computer Numerical Control and it has been around since the early 1970s. Before it was christened CNC, it was called NC, for Numerical Control. When computers were introduced during 1070s, the name changed. It has stroked almost all manufacturing forms in almost all stages of production. CNC machines either substitute some existing manufacturing processes or combine work with them.
A CNC program is just any other set of instructions. Its written like a sentence and the order (more…)

Pros and Cons in Sheet Metal Manipulation with CNC

Posted Friday, December 25th, 2009
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The advancement of technology allowed sheet metal designs to be more complicated. However, this level of complication has surpassed human capabilities (as far as mass production is concerned). The required accuracy for the intricacy of the designs can only be provided by Computer Numerical Controlled (CNC) machines.
The Punch press
An example of a CNC machine that is used in sheet metal manipulation is the punch press. This device uses hydraulic, pneumatic, or electrical power to exert immense pressure to shape the metal and cut it according to the designs. Being computer aided, this machine is capable of rapid positioning and therefore, fast production. Manual punch presses compromise speed for accuracy therefore lessening efficiency.
The punch press works by receiving instructions from a program in a computer. This allows the operator to sit back and relax once the cycle (rapid positioning, punching, and switching of tools) has been (more…)

Programming CNC Machines With G-Codes

Posted Friday, December 25th, 2009
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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. CNCs 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 (more…)

Programming 101: CNC

Posted Friday, December 25th, 2009
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After World War II, people realized that they have to manufacture goods at a faster rate and at a lower cost. Hence, mass production trending came to be. Those events led to the development of the Numerical Control (NC) machines which in turn led to the Computer Numerical Control (CNC).
HOW TO PROGRAM A CNC MACHINE
CNC programming uses a code similar in structure to BASIC. So, if you know how to construct a simple counting program, chances are, you already know what a G-Code looks like. However, there a few other things you have to consider before you start encoding instructions.
The first thing that you have to do is to assign values for each of the variables. These variables include the programmable motion directions (axes), and the reference point for the axes. The values that you assign to these variables dictate the movement of the machine (more…)

Practical Applications of CNC

Posted Friday, December 25th, 2009
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Manufacturing anything that requires exact measurements requires cutting edge precision and nimbleness from the worker. Most of the time manufacturing these kinds of products requires weeks or months to finish therefore slowing down productivity as well as consistency of the manufacturers.
Computer Numerical Control or more commonly called as CNCs are the new trend in machine shop manufacturing and practice. Any manufacturing environment owns one or is basically acquainted to this kind of device because of its capability to increase productivity as well as consistency on the products being produced.
Benchmarked from Numerical Control (NC) during the late 50s, Computer Numerical Control incorporate the functionality of a Programmable Logic Controller (PLC), meaning you could program it to execute different functions depending on the type of manufacturing that the industry needs.
Given this kind of quality what does the Computer Numerical Control do in the practical application concept? CNC (more…)