Precision and speed with automatic tool change

The new tool-change system of Kugler GmbH supports measures to reduce
processing costs. The latest generation of micro-Kugler machines -
machining centers Microgantry Micro and Micro Master - is equipped
with this system in order to increase the profitability of the
machines. The tool cabinet holds up to 60 tools in six magazines.
"We reduce the set-up times, which sometimes make up half of the
non-productive time, and thus achieve a direct reduction in costs," is
how Alexander Katz, Technical Director engineering, the goal of the
automatic tool change system. The tool cabinet is space-saving built
into the machine and still easily accessible. A double gripper system
ensures the speed of the changer. The new tool has been made
available, while the other gripper picks up the used tool with tool
shanks of 3 or 4 mm in diameter and shaft lengths up to 70 mm and
stores.

The tools must be positioned at the change due to the minimum opening
column very precisely. Modern high-frequency air-bearing spindles have
given the extremely high speeds of up to 100,000 revolutions per
minute on the tool shank only a direct voltage, which makes the
exchange. Therefore, Kugler has developed the solution that ensures
accurate insertion into the chuck and thus ensures a safe tool
changing process.

The ultra-precision automatic alternating processing systems with many
different tools are required. The change "shall not allow any
mistakes, he must be as safe as possible and to still be fast in
processing," explains Katz. The current cabinet holds up to 60 tools
in six magazines. The fully enclosed design with two automatic doors
allow easy switching. The magazines are mechanically coded to prevent
incorrect insertion. The new tool is clamped and then measured
optically at rated speed. This approach ensures the highest accuracy
for applications such as in the manufacture of optical surfaces and
allows to fulfill the requirements for ultra-precision micro-machining
centers.