Page 47 - Carmex - Tiny Tools 2020
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Tiny Tools
HK Broaching Tools for Hexagon Keys
The HK broaching system have been developed to machine internal keyways inside blind or
through holes, using CNC machines.
Working Demo
To use with Carmex standard SIM Bar Holders
The holder can be located directly in the turret
or the machine spindle
Holder with rear clamping screw for full support
during operation
Available in BMK Grade only.
Cutting Data
Material Tensile Strength (N/mm2) Feed rate (mm/min) In-feed per stroke (mm)
400-650 7000-9000 0.06-0.09
700-850 5000-6500 0.04-0.07
900-1000 4000-5500 0.03-0.05
1100-1200 3000-4500 0.02-0.04
The cutting data above is an initial recommendation and depends on the machine condition, workpiece
profile and the application clamping
A relief groove is highly recommended, if not possible a gradual volume decrease should be
made at the end of the broaching groove
The HK tool must be position outside of the hole/groove before each stroke
After setup and first stroke, we recommend to observe the tool and the application to make
sure no collision occurred
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