Chap. 2 Description Of Machine Features; Machine Features - Acer Supra 818PD Operation Manual

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CHAP. 2 DESCRIPTION OF MACHINE FEATURES

2.1 MACHINE FEATURES:

1.
High Precision Cartridge Type Spindle:
The spindle runs in 4 precision angular contact ball bearings in combination with roller
bearings. Before assembling, all bearings are preloaded and measured. The spindle is
driven by a V3 graded motor, making the machine ideal for heavy-duty and precision
grinding.
2.
Wear-resistant Slideways:
The slideways between the saddle and base are designed with double "V＂ slideways,
and one "V＂ and one "flat＂ slideways between the table and saddle. Both slideways
are coated with Turcite-B, and precision scraped to ensure smooth movement and high
accuracy.
3.
Rigid Casting Parts:
All structural parts of the machine are manufactured from high quality cast iron, tempered
for stress relief. This combined with rib reinforcement in the casting parts to upgrade
structural rigidity.
4.
Oversized Column And Base:
The oversized column and base feature increased stability and rigidity. The column interior
is reinforced by honeycomb ribs, providing heavy grinding resistance capability.
5.
Automatic Lubrication System:
The lubrication system employs a pump providing circulated forced lubrication to all screws
and slideways, which achieves an outstanding lubrication effect.
6.
Cross And Vertical Feed Ball Screws:
The saddle forward / backward movement (Cross feed) is driven by an AC motor in
combination with ball screw transmission, providing rapid traverse forward and backward
and automatic feed functions.
2-1
818~2040 PD