Head To dissipate heat in the 3 HP motor driven head, a pair of high output fans is installed. This allows the machine to work demanding jobs for extended periods without damaging the motor, belts and bearings. A unique SHARP feature.
The motor shaft and Vari Drive pulleys are dynamically balanced, then hard-chromed this allow a vibration free milling even at high speed
Since the Vari-speed drive system is operated by sliding the Vari Drive pulley up and down the motor shaft. The motor shaft is therefore chrome-plated, and has an oil channel that is fed by a grease fitting on the lower end for self-lubricating purpose. This ensures the sliding motion is trouble free at all times. A unique SHARP feature.
The motor shaft that drives the pulley and the spindle is subject to a lot of lateral stress. A roller bearing is installed for the lower support of the motor shaft. A unique SHARP feature.
Beside swiveling 90 degree side to side, the head can also swivel up and down by virtue of a knuckle joint design. The new design developed by Sharp uses 6 bolts, 3 each side, that fitted into a circular T-slot milled at the inside of the over arm and secured by nuts from the outside. It secured the head tightly and offered high accuracy in milling operations.
A matched pair of super-precision ABEC-7 angular contact bearings supports the spindle. The quill is CNC-ground to a mirror finish, and then chromed to fit the housing. Together, they insure spindle run out of no more than 0.00002 TIR- the best in the industry.
Column, Table and Knee Certified MEEHANITE castings are used for superior rigidity and better dampening of vibrations
Table and saddle backlash is controlled by a double-nut design that keeps the feed screw in contact with a pair of bronze nut at all times. A unique SHARP feature. The end of the table and saddle are mounted with thrust bearings that pre-load the feed screw, eliminating endplay for precisely controlled lateral movement.
The end of the table and saddle are mounted with thrust bearings that pre-load the feed screw, eliminating endplay for precisely controlled lateral movement.
Instead of hand scraping the top of the knee ways for oil retention, the matching underside of the saddle is hand-scraped. This extra step avoids having chips and dirt embedded in the knee ways and damages the sliding area.
Digital Variable Speed Head (DVS) available:
Why DVS head? High reliability with fewer moving parts than regular vari speed head
Low voltage control
Large Digital rpm display
Fully enclosed display unit
Dependable Inverter Drive System
Machine can run on single phase or 3 phase electricity
Safety device prevents machine from self starting after power failure or after emergency stop being pushed
LMV TABLE Working surface T-slot number, size 3, 5/8" CAPACITY Table travel; x-axis 30" Saddle travel; y-axis 12" Ram travel 12" Quill travel (Z-axis) 5" Knee travel 16" Spindle to column (min-max) 6 3/4" - 18-1/2" Spindle to nose table 2 1/8 - 18" SPINDLE Motor 3 HP Wiring voltage 220/440v, 3 phase, 60 Hz Taper R-8 Speed (vari-speed) 60-4,500 RPM Quill feed (IPR) 0.0015, 0.003, 0.006" Head swivel 360 Head tilt; right-to-left (each way) 45 Head tilt up-and-down (each way) 45 DIMENSIONS AND WEIGHT Floor area (w x d) 7 x 6.5' Net weight 2,400 Lbs.
STANDARD ACCESSORIES: Hard-chromed ways One-shot lube system Front and rear rubber way covers Tool kit
OPTIONAL ACCESSORIES: Digital Variable Speed (DVS) head Power feeds for table, saddle and knee R-8 collet set Milling vise Clamping kit Coolant system with chip pan Right angle milling attachment Riser block (4, 7) Digital Readout systems Power drawbar Auto lube system Halogen work light