Index Punch Broaching & Timed Adapter Heads




Index punch broaching is typically used on CNC machining centers for applications:
  • Where the machine cannot generate enough thrust to form the entire shape desired.
  • With more stringent requirements on the straightness of the form than can be achieved with rotary broaching.
The process involves punching a partial form in a prepared hole and indexing the spindle the required number of times to produce the finished form.

All Indexing broaches are made to order from superior Forte material to suit your application. Email sales@sommatool.com for a quote.





ADAPTER HEADS ARE PERFECTLY CENTERED DUE TO 90° TIMING OF THE FLAT ON THE SHANK OF THE TOOLHOLDER TO THE I.D. NOTCHES ON THE FRONT OF THE TOOLHOLDER AND THE SAME TIMING OF THE PINS ON THE ADAPTER HEADS TO THE SCREWS HOLDING THE BROACH TOOL.

INDEX PUNCH BROACHING
ER16 SERIES SHANKS
(Collet nut not included)
SHANK  DIA OAL SHANK PART#
1/2" 4-1/2" SS050BTER16
5/8" 4-1/2" SS062BTER16
3/4" 4-1/2" SS075BTER16
1" 3" SS100BTER16
1" 4-1/2" SS100BTER16
16MM 4-1/2" SS16BTER16
20MM 71MM SS20BTER16
20MM 114MM SS20BTER16
22MM 118MM SS22BTER16
25MM 60MM SS25BTER16
25MM 95MM SS25BTER16


INDEX PUNCH BROACHING
SHANKS ER32 SERIES SHANKS
(Collet nut not included)
SHANK DIA OAL SHANK PART#
1" 4-1/2" SS100BTER32
1-1/4"  4-1/2" SS125BTER32
1-1/2" 6" SS150BTER32
2" 6" SS200BTER32
32MM 4-1/2" SS32BTER32


HEADS FOR INDEX PUNCH BROACHING
(COLLET NUT INCLUDED)
SERIES I.D. NUT O.D. PART#
ER16 8MM 25MM ER16BT8MM
ER16 1/2" 25MM ER16BT0500
ER32 8MM 50MM ER32BT8MM
ER32 1/2" 50MM ER32BT0500