Operation Manual
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page 4
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, during milling operation, movement
of worktable in longitudinal or cross directions or rotation of the worktable is also 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.
Two separately vertical motors realize machine transmission. A special pump supplies
coolant water.
Two operating levers in the front of spindle box could make changes for the spindle speed
in 12 steps.
Changing either lever position could drive
a triple gear and a quadruple gear
moving along with axis direction results the speed change. One of levers 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 and an oil distributor (located on the top 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.
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Instruction Manual for GHD-50 (D178)
23/12/2014
