Rough boring with rough boring heads SW
Rough boring methods
1. RSS Rotationally symmetrical rough boring The symmetrical cutter arrangement is the most used adjustment for twin cutter heads. Especially suitable for small to medium stock removal (up to 10% of the final bore diameter) with high feed rates. 2. DVS Double offset rough boring Diameter and height offset cutters allow the removal of twice the stock (20% of the final bore diameter), with half the feed rate and excellent chip control. 3. VPS Full profile rough boring Heavily offset cutter arrangement in dia- meter for largest stock removal (up to 40 % of the final diameter), with surprisingly low power requirement. Due to the use of inserts type WC, the boring head functions like an adjustable insert drill for rough boring.
Examples (Insert holders type CC, SC, SD and WC)
RSS/BAL.
Ød
ØD
Boring head
SW / 32 SW / 41 SW / 68
38 45 90
42 50
100
0.2 / 0.4
Examples (Insert holders type CC)
DVS/STEP
Ø d
Ø D1
Ø D2
Boring head
SW 25 SW 53 SW 100 SW 100
28 60
31.5 35 67.5 75
110
125
140
Examples (Insert holders type CC)
Ød
ØD1
ØD2
Boring head
SW / 41 SW / 53 SW / 68
38 45 67
52 63 90
62 75
RSS
110
Adjustment instructions for rough boring heads SW
Rotationally symmetrical rough boring Both cutting edges are adjusted to the same length and to the same diameter. Mount the long insert holder “L” on the short support “B2” of the tool body and the short insert holder to the long support “B1”. The reference line marking on both insert holders is aligned to the RSS mar- kings on the tool body.
L1
S (Short)
B1
X/2
RSS
B2
X/2 L (Long)
Double offset rough boring The cutting edges are displaced in length and diameter. The difference in length is achieved by mounting the insert holders in a 180° twisted position. The reference line marking on both insert holders is aligned to the DVS markings on the tool body. Adjust the cutting edge on insert holder “L” to half the stock allowance. (Pre-cutter)
L2
B1
X/2
L (Long)
X
DVS
B2
S (Short)
X/2
X
7
Powered by FlippingBook