Automatic tool change is a factor that contributes to better productivity and convenience for the operator. For Accurate machines this is achieved by keeping the system's accuracy, which is not the case for most of our competitors. You can read why in the article Myths And Truths in the PCB Prototyping (point 2).
We offer 8 models of machines with automatic tool change. They differ from each other mainly in terms of spindle speed and motor, number of tool holders, positioning system and working area. Below you can find detailed specification with comparison between the systems and pictures.

Specifications:

Model: A426 A436 A427 A437 A626 A636 A627 A637
Working area (XxYxZ) 304x229x33 mm,
12x9x1.3 inch304x229x33 mm,
12x9x1.3 inch
406x279x33 mm,
16x11x1.3 inch406x279x33 mm,
16x11x1.3 inch
Machine design Heavy duty aluminum and stainless steel platform
Machine table 16 mm, 0.625 inch stress relieved high stability aluminum alloy
Tool holders 12 16
X/Y/Z positioning system Calibrated screws Servo feedback Calibrated screws Servo feedback Calibrated screws Servo feedback Calibrated screws Servo feedback
Absolute Accuracy (X,Y) 7.5  μm at 254 mm (10 inch) ** 5  μm at 254 mm (10 inch) ** 7.5  μm at 254 mm (10 inch) ** 5  μm at 254 mm (10 inch) ** 7.5  μm at 254 mm (10 inch) ** 5  μm at 254 mm (10 inch) ** 7.5  μm at 254 mm (10 inch) ** 5  μm at 254 mm (10 inch) **
Internal Resolution (X,Y,Z) 0.1 μm, 0.0000039 inch (0.0039 mil) *
Positioning Repeatability (X,Y,Z) 1.5 μm, 0.000059 inch  (0.059 mil) 1 μm, 0.000039 inch  (0.039 mil) 1.5 μm, 0.000059 inch  (0.059 mil) 1 μm, 0.000039 inch  (0.039 mil) 1.5 μm, 0.000059 inch  (0.059 mil) 1 μm, 0.000039 inch  (0.039 mil) 1.5 μm, 0.000059 inch  (0.059 mil) 1 μm, 0.000039 inch  (0.039 mil)
Tool penetration control Constant Automatic Surface Tracking - CAST™, surface tracking relative to tool tip, fully programmable fully automatic. Uses a linear gauge with 1 μm, 0.039 mil resolution.
Tool Calibration Precise Linear Gauge on the Z axis (0.04 mil, 1 micron resolution)
Spindle speed [rpm] 5,000 to 60,000 programmable 5,000 to 100,000 programmable 5,000 to 60,000 programmable 5,000 to 100,000  programmable
Spindle motor 3-phase induction motor; 60K/170W 3-phase induction motor; 100K/300W 3-phase induction motor; 60K/170W 3-phase induction motor; 100K/300W
Spindle drive PhACdrive (sensorless, vector control, DSP based)
Tool collet 3.175 mm, 0.125 inch
Spindle run out 5 μm, 0.0002 inch max
Collet control Pneumatic direct, 6-8 Bars (85-115 PSI)
Tool Change Automatic
Minimum drill diameter 0.2 mm (8 mil)
Minimum track size 0.1 mm (4 mil)
Minimum gap size 0.1 mm (4 mil)
Drilling speed Up to 180 drill cycles per minute (varies with the distance between holes)
Homing system Gold plated precision needle contacts
Max Travel speed (X,Y,Z)  Up to 102 mm/s, 4.0 inch/s
X/Y/Z positioning system 2 phase bipolar stepper motors, precision lead screws with ActiveCAM™ anti-backlash SuperNuts™
Interface to PC USB 2.0
Spindle and vacuum start-stop Program controlled, manual override available
Feed rate and Spindle speed Program controlled, manual override available
Dimensions (WxDxH) 508x432x305 mm,
20x17x12 inch
610x483x330 mm,
24x19x13 inch
Weight 33 Kg, 72 Lbs 41 Kg, 90 Lbs
Power Supply 100~240VAC, 50/60 Hz 355W
(35W stand by)
100~240VAC, 50/60 Hz 415W
(35W stand by)
100~240VAC, 50/60 Hz 355W
(35W stand by)
100~240VAC, 50/60 Hz 415W
(35W stand by)
Machine control system PhCNC360 CNC motion controller (up to 3000 command/sec)
Machine control programs Industry standard G & M codes ASCII, PHJ job files
Control and Edit software PhCNC, Windows based (Windows XP / Vista / 7 / 8) x86 & x64
Imports Gerber RS-274X files; Excellon Drill and Definition files; AutoCAD DXF 2D files; CAM350 files; PhCNC printer driver.
Camera Fiducial / inspection video camera / microscope (USB 2.0) included.
Warranty 1 year included in the price of the machine. It is an option to buy second and third year of warranty.
* The high internal resolution is used to achieve better screw calibration; temperature compansation for the screw and material; low noise and smooth movement
** To achieve the max accuracy, machine must be warm up for at least 30 min


Pictures:


A426

A626

A427

A637