And how are you supposed to say that the parts are discontinued by the machine shop? Well, this is all for computer numerical control (CNC). However, to understand CNC, it is necessary to know what numerical control (NC) is.
history
As mass production became a trend, NC machines were introduced after the first World War II. These machines were given a set of punch card instructions. However, these machines are wired and their parameters are difficult to change.
These NC machines still required a great deal of human intervention. To illustrate this point, try looking at the drill press. In order to manufacture a product, many actions need to be taken. The process is actually very complicated and you have to do something at almost every step of the production process. This has created the potential for errors to occur as the potential for fatigue increases with increasing volumes.
CNC came into the picture when the computer was introduced. Transfer media for floppy disks, cables, and other software replaced with punch cards. This makes managing and editing data easier.
Production and manufacturing have been revolutionized by the increased automation of CNC machines. These machines enabled a degree of added control of the quality and consistency of the manufactured parts without additional strain on the operator. Add the frequency and business hours of this reduction error. Furthermore, this automation has allowed more freedom in the way parts are held in the manufacturing process.
With the advent of computer-aided manufacturing (CAM), programming CNC machines are also easy. These programs are actually bothersome under the operation of the programming process. However, to be an effective programmer on a CNC machine, you need to know what the machine you are working on is doing. That's why mechanics are often the best people for work.
The ease offered by the machine is heavily hinged on the quality of the machine. Low cost CNC machines have many features that often have to be manually activated. However, expensive machines are almost completely automated. It takes time for the operator to read or unload. Once the cycle is started, the operator must just sit down and look for any malfunction. Operator pressure is so low that some complain of boredom in the middle of the cycle.
It's tough.
Different CNC machines
CNC has different applications depending on the machine that operates it. The budding operator who can do it is the operation CNC of the machine that you want to know.
Milling
Milling machines are common CNC machines. These devices are used to mold metals and other solid materials. It is basically a rotating cutter and a table. Milling machines are capable of complex toolpaths because the cutters are not limited to lateral movement, but allow "and" movement. This movement is precisely controlled by the movement of the table and the cutter in relation to each other. The cutting fluid is then oiled and cooled at the cut and pumped to remove the swarth generated by the cut.
lathe
A lathe is a machine that performs different operations such as sanding, cutting, scoring, deformation, or even training. These machines work by turning various solid objects and then using tools that are symmetrical about the axis of rotation. The lathe machine is equipped with a single tool in which the workpiece works against the tool. The tool then works to generate supply next to or to the workpiece.
The lathe can be used for different operations.
Machining center
These are more complex CNC machines that combine milling and rotation. As mentioned earlier, turning is the focus of this section.
Turning is a process used in conjunction with the rotation of the material turning central lathe. Next, move the cutting tool along the two axes of motion to produce accurate dimensions.
It is a very precise part for milling with combined rotation. In terms of that, these devices are used. However, due to the complexity of these machines, the operator must be a specialist to be able to operate with maximum efficiency.
Electric discharge machine
An electrical discharge machine (EDM) creates a metal cavity by emitting an electrical spark. This process requires electrodes, coolants, power sources and tanks. This cycle is accomplished by connecting the workpiece to one side of the power supply and putting it into the tank. An electrode (made with the required cavity shape) is connected to the other side of the power supply.
The tank is then filled with a coolant and the electrodes are lowered to the jump of work and sparks between the electrodes. Since the coolant is a dielectric material (resisting current), it requires a smaller difference in spacing so that the spark can jump. This means that the dielectric properties were overcome when the spark appeared. The spark then displaces the material thereby creating a cavity in the shape of an electrode.
CNC system
CNC systems are complex machines that transfer and store data about the mechanism of operation of the machine. The motion program includes point-to-point control, straight cut control and contouring control.
Point-to-point control refers to the control of the tool from one point to another in the coordinate plane. This control method is commonly used in drilling and boring operations.
Straight cut control is the way the tool moves on all axes of the machine. The tool also has the ability to move at a 45 degree angle.
Contour control is a means of creating toolpaths. Move the tool by interpolating the points or coordinates that make up the path the tool follows.
The programming language used by CNC is called G code. These codes actually place the parts and do the work. You have to enter the correct parameters such as 斧, reference point, machine accessories and whatnot able to work the machine properly. Every machine has different variables, so you need to be aware of the differences.
Apart from G code, you can use logic commands and parametric programming to make the process more efficient. This programming language shortens to incremental with long-term programs. The loop also repeats the coding of the need to remove the program.
These features make parametric programming more efficient than CAM. It is possible to direct and efficient group cash-flow coordination. You can also extend the capabilities of the machine you are running.
And that makes CNC.
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