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Designed specifically for the jewelry industry, the Mira-X7 incorporates a complete solution for complex milling needs into one compact tool. It’s an entire machining system designed to fit on a desktop. Using NS CNC’s system of simultaneously rotating the workpiece and moving the milling bit, the Mira-X7 achieves both impressive efficiency and highly detailed, beautiful models.
Accessing those tight corners exactly as designed, this system can manifest a CAD drawing into a tangible piece of art, automatically. From start to finish, the system guides the workpiece through an intricate dance, culminating in a perfect wax model. Once the Mira-X7 has completed a model, it’s ready to cast. The surface finish is flawless, while even the most complex cuts are made with ease. The Mira-X7 is the ultimate tool for any jeweler who truly wants to see their art come to life.
(*) Under certain conditions
NSK Nakanishi spindles are installed on all NS CNC mills. They are a world leader in precision machine tools and are the only choice for serious machinists. The spindle has a long service life and is very reliable. The standard milling machine receives a 60,000 RPM spindle. The spindle has motor speed feedback, digital display controlling, and monitoring. The spindle housing is made from precision ground, hardened, stainless steel.
The maximum motor speed of 60,000 RPM is realized by using a high-performance brushless motor and ceramic bearings. An air-cooled motor uses a small volume of air (1.0 CFM) to minimize heat buildup and allow continuous operation. Air pressure required is 130 PSI.
Mira-X7 is equipped with a rack-style Automatic Tool Changer (ATC). The tools are stored in a magazine with 13 tools. The tool magazine mounts inside the machine, outside the work area. It extends forward at the time of a tool change and then retracts back, to be clear of the work area. The ATC changes the tool very quickly, reducing the non-productive time. It is also used to change worn out or broken tools. It allows the machine to work with a large number of tools without an operator. Although the ATC increases the reliability, speed, and accuracy, it creates more challenges compared to a manual tool change.
Included with the tool change unit is a tool length sensor. This is used to measure the length or offset of each tool in the magazine. The data is then stored in the control software. This sensor consists of a high precision microswitch with a carbide post mounted above. The sealed assembly is mounted at one end of the tool change unit beneath the cover. The switch is sensitive enough to measure the smallest end mill or drill without breakage. The tool offset management software allows the operator to measure as it needs to or automatically in a program. A program can even be set up such that during the production run, if it measures the tool and has determined it is broken, it will automatically change the tool with a surrogate tool and re-machine from the beginning of that tool path.
A tool holder is an interface between a machine spindle and a precision cutting tool. The V-flange is the part of the tool holder that the automatic tool changer locks onto when moving the tool from the tool changer to the spindle and back again. The flange is visually identified as the “V” groove found on the outermost diameter of the tool holder. Cutouts in the flange help orientate the holder in the spindle.
The collet tool holder can be replaced by using an Air Clamping System. The clamping can be done fully automatically by pressing a button on the screen of NS Motion Control or from the NC program.
The spindle collet set has a standard diameter of 1/8? (3.175 mm). If you need another collet sizes, we can provide you a collet of any size from 1.0 mm to 6.5 mm in increments of 0.1 mm.
Control of the machine is carried out by the NS Motion program within the built-in computer. This program is designed specifically for the MIRA Mill machine family and is both reliable and easy to use. When you turn on the machine, it is automatically loaded, and no additional settings are required.
The machine not only moves the carriages and rotary tables but also controls the spindle, the coolant machine and various sensors. Its optional wireless communication settings allow the user to connect to the internet, enabling the use of support software such as Skype and Team Viewer in case troubleshooting is required.
Keeping the cutter and working piece wet during operation greatly improves the surface quality of models. The coolant prevents the milling bit from overheating and prevents the dust produced from milling from spreading to your shop and any nearby equipment. The system automatically and continuously filters and circulates the coolant. Used coolant is collected from the collection tray beneath your work-piece and is recycled by draining back into the coolant reservoir. The coolant fluid contains a 5% – 15% emulsion of water-soluble oils.