In the application of EDM machine tools (electrical discharge machining), there are many industries that require high precision EDM micromachining to achieve micron-level tolerances. Considering this practical application, the establishment of a CNC micro machining center provided solutions and engineering services that met these strict standards. Many high precision micromachining centers are equipped with advanced spindle temperature control functions, unique EDM advancements, and rigid mechanical structures. They are capable of high-speed machining and have excellent accuracy repeatability.
Let’s look into the CNC micro machining center, the history of wire cut EDM machines began in the late 1960s. The purpose is to make tools and dies from hardened steel. The earliest CNC machine tool was the conversion of punched-tap vertical milling machine. In the late 1960s, the Soviet Union manufactured the first commercial CNC machine, which was a wire-cut EDM machine. During this period, the processing of aviation, military and national defense, and automobiles was moving in a positive direction.
For the most generally accepted point of view, the term CNC micro machining refers to the process of using tools with a diameter of less than 0.015 inches, and the tolerances also meet certain standards. This type of machinery is called CNC micro machining center. In order to achieve certain precision micromachining, the use of small diameter tools requires a specific spindle speed, and the machine should be very precise.
In the industrial field of metal processing, there are many ways to achieve high precision micromachining. There are two main methods, the first is EDM or CNC micro machining center, and the other is the more traditional metal-to-metal cutting process. Either way, the customer's demand for workpiece results is basically the same, so manufacturers must deal with different kinds of processing issues to keep up with processing standards and actual conditions.
Furthermore, machining is actually a broader concept in the metalworking industry, which actually includes cutting, drilling, knurling, deformation, sanding, turning, milling and other processes. In addition to the above two technologies and methods, there are other machinery suppliers that provide other micro machining methods, such as subcontracted micro drilling based on laser micro hole drilling. Now, laser technology is very mature and has been used in various industrial applications.
In a CNC micro machining center, the laser is a device. It is a device that emits light according to the electromagnetic radiation of stimulated radiation through an optical amplification process. The term "laser" is derived from the acronym for light amplification caused by the emission of stimulated radiation. The first laser was built in the famous Hughes Research Laboratory in the 1960s. The laser is based on the theoretical work of Charles Hard Townes and Arthur Leonard Schawlow. Basically, the difference between a laser and other light sources is that the light emitted by the laser is coherent, and the spatial coherence allows the laser to focus on a narrow position, which can be used for laser cutting and lithography printing.
In short, laser coherence is different from other light sources. Spatial coherence is usually expressed in the following way: the output is a narrow beam, limited by diffraction, and the laser beam can be focused on a very small point, thus providing a very high irradiance. Or their divergence is very small, so they can concentrate their power over a long distance.
However, time coherence implies a single frequency polarized wave whose phase is related at a relatively large distance along the beam. The light beam generated by a heat or other incoherent light source has an instantaneous amplitude and phase, which varies randomly with respect to time and position, so the coherence length is short.
After the invention of laser technology, the structure of metal processing has changed. The metal cutting can be completed faster in a short time, without other tool wear problems and other traditional tool problems. Since the invention of this technology, the way people use energy has changed. Therefore, in order to keep up with this innovative technology, the corresponding management has also been improved.
At the same time, EDM technology is another invention that appeared in the 20th century. In the metal processing industry, electrical discharge machining (EDM) is also known as spark machining, spark eroding, burning, die sinking, wire burning or wire erosion. CNC micro machining center uses sparks that usually generate sparks to obtain the target shape, so it is also called spark machining in Chinese. During processing, excess material is removed from the workpiece through a series of rapidly circulating currents. In these components, one electrode is called a tool electrode, and the other electrode is called a workpiece electrode. The machining process is determined by tools and workpieces that will not actually touch. Today, there are many types of CNC micro machining center. In this section, we will discuss a type widely used in the manufacture of household appliances, filters, 3c electrical consumables, and other smaller-sized workpieces.
With the development of scientific progress, it has been observed that many artifacts are not getting smaller compared to the past. This trend makes the metal working process more difficult if the desired goal is to be achieved. Therefore, the CNC micro machining center is an effective solution, which can help industrial manufacturers achieve the expected precision and accuracy.
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