Page 230 - Parlec Catalog
P. 230
Small Diameter Boring System
228 Operating Instructions
USING THE VERNIER SCALE ASSEMBLY
Find the line in the vernier scale that 1. Screw boring nose onto boring bar shank.
exactly lines up with a reverence line. Boring Nose
2. Loosen the clamp screws.
Diametral increases in .001” are made 3. Insert boring bar shank and reduction bushings (if
by adjusting the dial clockwise one full applicable) with the slots 90˚ to clamp screws. Note: Do
reference line. not use boring bars with flats.
Diametral increases in .0001” are made 4. Rotate the boring bar shank to align the insert tip to the Boring Bar
by adjusting the dial clockwise until alignment mark atop the boring head body. The bar should Shank
the appropriate line on the vernier be slightly above the alignment mark for best timing.
scale lines up with the next fixed scale Note: Adjusting the position of the insert tip adjusts the “timing”
reference line. of the bar which optimizes the surface finish and performance.
5. Adjust the boring bar to the minimum desired length.
Vernier Scale Fixed Scale
(.0001”) (.001”)
6. Tighten the clamp screws, Max 20 ft/lbs. (1.13 Nm)
Tool Tip Slightly Above
Alignment Mark
Clamp Screws
Slide Lock Screw
Adjustment Dial
This Example Shows .001” Adjustment
Adjustment Dial
ADJUSTMENT
1. Loosen the slide lock screw. Adjustment Dial
2. Adjust tool position by turning and reading the dial.
Before adjustment After adjustment The dial is graduated in increments of .001” per
graduation on the diameter. Fine adjustments of
This Example Shows .0005” Adjustment
.0001” can be made utilizing the vernier scale.
3. Tighten the slide lock screw, Max 10 ft/ lbs. (1.13 Nm)
MAINTENANCE
The Parlec precision boring head is constructed of alloy steel, stainless steel and a
precision composite material. The internal components are self lubricating. To insure
Before adjustment After adjustment long service life, light spindle or machine oil may be applied to external moving parts.
No further maintenance is required.
TORQUE SPECIFICATIONS
Metric Vernier also available. See page 233.
SLIDE LOCK SCREW 10 ft/ lbs. (1.13 Nm)
CLAMP SCREW 20 ft/ lbs. (2.23 Nm)
| www.parlec.com | 1-800-866-5872
