Various advancements in industrial machineries and equipments have taken place in the last decade or so. One of these is the sphere of laser cutting technology that has ushered a new phase of cutting finesse and precision. This is a process of utilizing laser beams to cut through various types of materials that would include glass, metallic sheets, jewelry pieces, fabrics and wood among several other things and items.
The process of using this technology ensures a better quality of the work which is flawless. It is a beam of heat that melts the material along the line of cut so that there is an exceptional finish of the desired effect.
The use of laser cutters was initially introduced for the heavy metal industries. With times and further advancements of the machines and the equipments it was made available for various other sectors as well. There is a new range of machinery and equipments that are furthermore useful even for small industrial setups and factories. Plenty of companies have begun to initiate in this sphere of work with the help of technological advancements and availability of suitable machinery.
The process of laser cutting is one that is controlled by the computer for its effects. The precision is commanded by the computer programs while the lasers are directed on the area of work over a material. The accurate point of the beam on its assigned area melts away along the lines of cut. Thus the work that is resulted out of this is a flawless and accurate one.
It makes cutting of metallic sheets or glasses to even precious stones and jewelry more accurate and time saving. It can be done with lesser force of manual human efforts but with the technical finesse to handle the computer.
Laser cutters use three different kinds of rays for various types of cutting jobs. These are the CO2, the Nd and the Nd YAG. The apparent look and nature may appear to be the same for all three but there are different areas of boring, cutting or engraving applications that each one is used for. Welding is one common area of work that can be done by all the three types of laser.
There are several companies that have begun to engage in the business of providing industrial support to companies with these applications. There are various small scale companies that have come up to offer cost-effective and affordable services.
Laser engraving is one of the biggest revolutions in the field of engraving. The significance of the laser method is that the machine used for engraving does not come in direct contact with the surface on which engraving is being done. Initially the laser machine was designed to engrave on materials like glass, plastic and wood. With the success of the initial machine the companies started to implement laser on several other areas like automation systems, laser marking system and hot stamping. There are a number of advantages of the laser engraving systems as compared to traditional methods of engraving.
- In this method of engraving, no toxic chemicals are used; as a result no harmful chemical residue remains after engraving. This is one major advantage of laser engraving over other methods where a lot of toxic chemicals are used and residue stay back.
- If used perfectly and correctly, the machine does not produce any dust. The machine works clean when used properly.
- The machine works soundless. The machine works with minimal sound as compared to older methods.
- Since the machine does not have any direct contact with the surface, hence it is quite easy to do engraving even on uneven surfaces. Initially the tips of the machine was changed each time before engraving depending on the surface, however, now all these jobs are software controlled and works with the click of a button.
- The initial price of the machine is little high but the machine requires very less or no service and no tip replacement.
- The operational cost is extremely low and the implementation of the new up-to-date technology definitely increases the productivity. It also reduces the operational cost of the small-scale industries. The machine is used extensively for work like hot stamping, pad printing, laser marking and even ultrasonic welding machines.
The only disadvantage of the laser engraving system is that its initial setup cost is a bit high. However, the cost becomes a minor issue when one compares it with the benefits the machine brings along. The Laser engraving systems are a blessing to the small-scale industries.
Laser Engraving is a process by which patterns and signs are engraved on an object without using ink or any other medium. There are special kinds of laser engraving machines which are made of novel metal alloys and laser sensitive polymers. There are main three parts of these kinds of machines. They are the laser, the controller and the surface on which the laser has to be emitted. Laser is a structure similar to that of a pen which emits a beam on the surface on which something has to be engraved. The controller controls the intensity and the speed of the beam.
There are once again three main types of laser engraving machines. They are machines with stationary work piece, with cylindrical work piece and lasers. The first type is also called the X-Y table named after the direction along which it moves. The second one carries a movable work piece with a stationary work piece. The laser follows a helical path. In the third category, both the laser and the work piece are movable. When the laser is allowed to pass over a surface or the area which has to be engraved, energy gets accumulated and the laser heats up. The surface material thus gets vaporized and a part of it is removed. This engraves the desired pattern on the surface. In this way many patterns can be engraved on the surface. The controller could also be programmed for the same purpose. The path which has to be followed is stored in the controller. The changes brought about in the speed and the intensity of the beam also determines the design which has to be engraved.
Using the laser engraving machines, not only wood and metals but also plastic, stone and glass can be engraved. The machines are of great use to the jewelers. Sub Surface Laser Engraving is use to engrave on solid transparent material. Some other types of engraving are flexographic plates and cylinders engraving, laser imaging etc.
A Look At Different Type of Laser Engraving Machines
For laser printing purpose, the laser engraving machines are perfect tool to carry out the task perfectly. Laser engraving equipment is widely used in US and UK. There are several reputed brands who manufacture the best quality laser cutting tools and engravers.
Laser engraving is mostly used in metal and electronics industries for marking & engraving on the hard substrate metal surfaces. With the help of radiation and laser technology, the entire process is carried out. The laser marking technology does not allow the surface to wear out even after being exposed to strong radiation heat and laser beam. This is the reason why laser marking process always enjoys a strong positive edge over the other techniques available. The positive working effect of this technology can be observed more prominently when the engraving is carried out on laser-sensitive surfaces like novel metal alloys and polymers.
There are different types of laser engravers available. However, each type comprises mainly of three major parts: surface, laser, and controller. The controller can be defined as a micro-computer device that controls & regulates the direction, intensity, and speed of the laser beam. The controller also controls the extent to which the beam can spread so that it can be able to concentrate on the particular pointed area of the surface. However, must keep it in mind that the surface should be appropriate to endure laser beams or else, it will slowly melt away when exposed to such heated laser beams. Although there are different type of laser machines available in the market, but the most common and popular one is the X-Y Table.
The X-Y table is a device where the surface is immovable or stationary. The laser beam travels through this surface while following a certain path in the matrix of X and Y. This movement helps in drawing vectors on surfaces that ultimately provides the necessary form to things or words that will be engraved. At times, the surface have the tendency to move to & fro in order to develop a vector while making necessary adjustment to catch the laser beams that comes from one stationary outlet. In the industries, the immovable surfaces are mostly used.
There are also those engraving machines that have a raster form in contrast to the above mentioned one. In most cases, these types of laser engravers are used for cylindrical surfaces. The laser beams travel in very helical patterns with continuous on/off pulses that develop a figure being required to get engraved in raster form.
There is also a third variety where both the laser beams as well surface is stationery & images get formed due to presence of GALVO mirrors that moves over laser beams to develop images on surfaces.