Brief Description Of The Driving System And Its Structure - Promac JDT-5030 Operation Manual

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2.2 For the machine appearance and its main technical data, see diagram 1.

3. Brief description of the driving system and its structure:

The machine consists of spindle box, column, machine base, worktable and its bracket,
electric cabinet, coolant device and machine accessories, total seven component parts.
Spindle revolution is main motion of the machine. During drilling and milling processing,
spindle movement along with its axis is a feed motion. Worktable up and down movement
and worktable turn round itself is an auxiliary motion. To those big or higher work piece that
could be clamped on the worktable of the base. The worktable and its bracket should turn
round the column to a proper area far away from the machining area.
Double-speed vertical motors realize machine transmission. A special pump supplies coolant
water.
Operating lever in the front of spindle box could make changes for the spindle speed in 12
steps. Run the lever position could drive a triple gear and a quadruple gear moving along
with axis direction results the speed change. The lever has an idle position that is for the
spindle rotation by manual for loading and unloading of tool cutters as well as for the
adjustment of work piece only. Adjustment of the feed rate could be realized by shifting a
set of gears controlled by changing a lever position in the right corner of spindle box. It also
has an idle position for disengaging power feed transmission of the spindle for the micro
adjustment of the spindle by manual.
Up and down movement of the worktable and its bracket is completed by a vertical speed
reduction motor. Of cause, little adjustment for the height of the worktable could also be
made by manual.
Two kinds of lubrication, auto or manual, of the machine are available. Auto lubrication
system consists of a filter ( located inside of a tank under spindle box), a lubrication oil
pump (located on the middle of spindle box), a visual window and an oil nozzle etc.
Please refer to the diagram 2 for the transmission system of the machine.
For the gear, worm and worm shaft, rack and pinion etc, please see table 1.
For the details of roller bears to be used on the machine, please refer to the diagram 3 and for
a list of roller bears, please refer to the table 2.
Operation Manual
Total
26
page
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