Ultra-precise, ultra-productive

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.

Mira X7 Specifications

Machine Resolution

0.30

Microns

Spindle Speed

60000

RPM

Dimensions

Machine Overview

 

  • Model : Mira – X (7-th Generation)
  • Machine Type : 5-Axis Desktop simultaneous CNC Mill
  • Frame and Stages Material : Hot Rolled Steel and Aircraft Aluminum Alloy
  • Linear Axis : X Y Z
  • Rotary Axis : A B
  • Machine Codes : Universal G & M Codes
  • Material Stock : Wax, Plastic, Wood, Ceramic, Metal

Accuracy

 

  • Position : 0.00001″ (0.0003 mm)
  • Repeatability : 0.0002″ (0.005 mm)
  • Rotary A Resolution : 0.10 Arc-Sec
  • Rotary B Resolution : 0.10 Arc-Sec
  • Spindle Accuracy : 0.00004″ (0.001 mm)

Mechanical Data

 

  • Linear Motion : High precision LM Guide
  • Max Feed Rate : 118 inch/min (3000 mm/min)
  • Max Rotary B Speed : 300 Deg/Sec
  • Max Rotary A Speed : 300 Deg/Sec
  • A Turnable Diameter : 6″ (150 mm)
  • B Turnable Diameter : 4″ (100 mm)
  • Ball Screws : 10 mm / 2.5 mm
  • Backlash : Zero backlash

Spindle

 

  • Brand : NSK Nakanishi
  • Model : E3000
  • Speed : 60,000 RPM
  • Power : 350 Watt
  • Tools Changing : Automatic Tool Changer
  • Collet, Standard : 1/8″ (3.175 mm)
  • Collet, Additional : From 1/64″ (1.00 mm) to 1/4″ (6.35 mm)

Tool Height Sensor

 

  • Type : Flat, Contact

Automatic Tool Changer

 

  • Type : Pneumatic
  • Magazine Capacity: 13 Tools
  • Tool Holder: NSK Collet Holder

Power

 

  • Requirements : Single Phase 110/220 V
  • Capacity : 8.0 A (100 – 120 V)
  • Consumption : App. 1000 Watt

Working Distance

 

  • X Axis : 4.0 inches (102 mm)
  • Y Axis : 9.3 inches (238 mm)
  • Z Axis : 5.5 inches (140 mm)
  • Rotary A : 360 Deg Continuous
  • Rotary B : 360 Deg Continuous

Motion Control System

 

  • Computer System : Linux
  • Computer : Built-In
  • Control Program : NS – Motion
  • Motors : AC Servo
  • Power, XYZA Motors : 200 Watts
  • Power, B Motor : 50 Watts
  • Max Speed : 5000 RPM
  • Encoders : Magnetic, 16 bit Absolute
  • Drivers : Servo, Pulse/Analog, Absolute encoder position feedback

Machine Size and Weight

 

  • Width : 26 inches (660 mm)
  • Depth : 34 inches (860 mm)
  • Height : 45 inches (1120 mm)
  • Weight : 310 Pounds (140 Kg)

Packaging Size and Weight

 

  • Width : 34 inches (836 mm)
  • Depth : 36 inches (914 mm)
  • Height : 48 inches (1220 mm)
  • Weight : 450 Pounds (200 Kg)

Air System

 

  • Air filter: Built-in air line kit
  • Required air pressure: 0.15 – 0.25 MPa (21.7-36.2 psi) (1.5-2.5 bar)
  • Spindle speed with air: up to 60,000 RPM

Lubrication System

 

  • System : Manual Lubrication System (MLS)
  • Storage/Volume : 500 ml Oil
  • Oil : Mobil SHC Synthetic Gear Oil
  • Delivery rate per Pulse/Stroke : 0.15 ccm
  • Operating pressure : Max. 70bar (1000psi)

Coolant System

 

  • Type : Liquid Cooled
  • Filtration : Self filtrated
  • Circulation : Constantly Circulating
  • Coolant Type : “NS-Cool” concentrate
  • Coolant Capacity : 6 Gallons (23 Liters)

What’s in the Box

 

  • MIRA–X7 machine assembly, calibrated and aligned
  • Coolant reservoir, pump and hoses
  • Milling Bits
  • Work piece  Holders
  • Coolant
  • Accessories and Tools
  • User’s Guide

 

  • NS Motion  Control Program
  • 5-Axis CAM Software
  • Buit-in Computer
  • Monitor with mounting arm
  • Cables, Mouth and Keyboard
  • USB WI-FI Adapter
  • USB Flash Drives

Why MIRA – X7?

The Mira-X7 is not just a machine, it is a complete system that can simply and quickly make a model of jewelry from the most popular 3D-file formats. The ability to operate in 5 different axes enables the user to create complex models not found in previous machines. It is designed for jewelers who do not have special education in CNC machines and for those who do not have the time to calibrate and configure complicated settings in the machine.

NS Motion

5 – Axis Control Program made by NS CNC specifically to run Mira – X milling machines. It's part of NS - motion servo system.

Dual Rotary

The machine is equipped with a unique Dual Rotary Table, which allows the work-piece to rotate in two different axes while also remaining completely stable.

NS – Holders

The unique wax work-piece holders allow the A rotary axis to get even closer to the spindle head, allowing for more access to your model.

Advanced Milling Technology

All 5-axis machines series for Mira-X are equipped with advanced milling technology. It is based on the latest system of simultaneous “Smart angular movements control” of rotary tables. This significantly reduces the time of milling and allows the machine to work more effectively.

Ultra Precision Spindle

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. Spindle has a motor speed feedback, digital display controlling and monitoring. The spindle housing is made from precision ground, hardened, stainless steel.

The maximum motor speed 60,000 RPM is realized by using high performance brushless motor and ceramic bearings. Air-cooled motor uses a small volume of air (1.0 CFM) to minimize heat buildup and allow continuous operation. Air pressure required is 36-44 PSI.

Automatic Tool Changer

Mira-X7 is equipped with rack-style Automatic Tool Changer (ATC). The tools are stored on a magazine with 13 tools. The tool magazine mounts inside the machine outside the work area It extends forward at the time of tool change and then leaves back. 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 manual tool change.

Tool Length Sensor

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 and the data is stored in the control software. This sensor consists of a high precision micro switch 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.

How It Works

Tool Holders

A toolholder is the interface between a machine spindle and a precision cutting tool. The v-flange is the part of the toolholder 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 outer most diameter of the toolholder. Cutouts in the flange help orientate the holder in the spindle.

The collet tool holder can be replaced by using 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.

Self-Centering Vises

NS – compact self-centering vise features a one-piece, rigid base that can achieve gripping huge forces and high repeat accuracy. A variety of jaws, which can hold from 0 to 100 mm work piece, increase flexibility and customization.

Both jaws on this precision vise move in equal and opposite directions so parts of varying size remain centered as long as the vise remains centered to the machine spindle.

nsmotion3

NS Motion Control

 

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. It is loaded automatically when you turn on the machine and requires no additional settings. As well as moving the carriages and rotary tables, the system controls the spindle, coolant system and various sensors. Its optional wireless communication settings allows the user to connect to the internet, enabling use of support software such as Skype and Team Viewer in case troubleshooting is required.

Coolant System

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.

Completely enclosed working area allows you to collect all chips and dust when working with precious metals