


Counterbore Tools from HEULE to reduce process time and improve efficiency
Cylinder head / Back Spot Facing Tool
Cycle time – the decisive factor
HEULE has been reducing cycle times in the automotive industry successfully for over 30 years now. Today, car manufacturers ask for simple and process capable tool system. Terms like "time saving activities", "labor costs saving“ and "CIP continuous improvement process“ are common practice in the automotive industry.
Customer application
The manufacture of countersinks, in particular screw head countersinks, are carried out mostly by back machining and are very time consuming. Either the workpiece is machined on the front surface which entails a turning of the workpiece. After the turning, it is evident that readjusting is inevitable and the time needed has tripled – or the machining is done backward. Most commonly a screw-on-type countersink or counterbore tool is used. The issue here is that – having to machine serveral hundreds of bores – all bores have to be approached individually because the countersink cap has to be fixed first every single time. Needless to mention that this takes a lot of time.
The high amount of time invested in each bore and the lacking process capability have led to rethinking this process.
Through-hole |
Ø12.6 mm |
Back Spot Facing backward |
Ø22.0 mm |
Material |
Aluminium Cast |
Proposed solution by HEULE Werkzeug AG
The solution from HEULE reduces the processing time and improves the process capability. The workpiece is not to be moved in any case in order to keep the tolerance simply and safely.
Cutting data
Working speed |
2000 rpm |
Cutting speed |
140 m/min |
Working feed |
0.05 mm/rev. |
Customer satisfaction
The customer is very satisfied by the result and the achieved time savings. The high spindle speed reduces the fluttering of the blade due to the interrupted cut considerably.