Page 137 - Aluminum_Machining_catalog_2023

USER GUIDE

ATTENTION: Cutting tools can break during use. b
To avoid injury always use safety precautions a
such as gloves, shields and eye protection.
Assembly Instructions (BN5-BN9) β¡
γ¡
First Assembly
• Clean the toolholder pocket (fig. 1).
• Clean the reamer head clamping cone. Lead Code /
• Insert the clamping screw into the holder and rotate Parameter Β° A [mm] G° B [mm]
it 2-3 turns in a clockwise direction (fig. 2). A
• Clamp the reaming head on the screw; note, BN8 45° 0.5 ־ ־
and BN9 can be assembled only in a specific B 25° 1.07 ־ ־
position relative to the screw (rotate the head C 45° 0.5 8° 0.75
until locating the correct position) (fig. 3). D 30° 0.5 4° 1.85
• Manually rotate the reaming head until E 45° 0.2 ־ ־
it sits firmly in the pocket. F 90° ־ ־ ־
• Tighten with the special key (fig. 4). G 75° 0.15 ־ ־
• Make sure there is no face gap between the X specially tailored (undesignated) INTERCHANGEABLE HIGH PRECISION REAMING HEADS
toolholder and the reaming head (fig. 5).
When choosing a reamer, it is important to select a lead geometry that
Indexing covers the reaming allowance
• Release the reaming head with the key, turning in a
counterclockwise direction until it rotates freely. Reaming Allowance
• Rotate another one turn by hand. Reaming allowance is the stock material which should
• Remove the reamer head from the tool; be removed by reaming. It is recommended to leave
the clamping screw should remain inside. different reaming allowances depending on the workpiece
• Clean the pocket of the toolholder (fig. 1). material and the pre-hole quality. Pre-hole should be
• Clean the cone on the new reamer head. smooth and straight, without deep scratches on it.
• Clamp the reaming head on the screw; Complementary Grades (on Request):
note, BN8 and BN9 can be assembled only in a ID5 (PCD) recommended for high speed reaming
specific position relative to the screw (rotate the of aluminum (special cases). RN01 (DLC coating)
head until locating the correct position) (fig. 3).
• Manually rotate the reaming head. In the beginning it recommended for reaming the following materials:
aluminum alloys (cast, wrought, etc.), brass,
should rotate without the screw and then (after 1/6 of bronze and other nonferrous materials.
a turn) it should engage with the screw. Rotate until it
sits firmly in the pocket. If the screw rotates together ØDR
with the reaming head from the beginning, remove the Reaming
reaming head and open the screw another one turn.
• Tighten with the special key (fig. 4).
• Make sure that there is no face gap between
the toolholder and the reaming head (fig. 5).
ØDP
1 2 3 Pre-hole
Hole Ø mm
9.5 - 11.5 - 13.5 16 -
Material < 9.5 11.5 13.5 - 16 32 >32
Aluminum 0.07- 0.10- 0.15- 0.20- 0.20- 0.20- mm/Ø
and Brass 0.10 0.15 0.25 0.30 0.40 0.50
Δ - Reaming allowance Δ = ∅DR - ∅DP
4 5

BN9: 21-23N*m
BN8: 17-20N*m
BN7: 13-15N*m
BN6: 8-10 N*m
BN5: 7-8 N*m

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