Working on the machine tool
Machining
Working on the machine tool
15doc030910
5-8
5
5.5
Machining
Before we start machining we should respect the following rules:
1. Check the condition and tighten of knives
Notice:
In the event that the knives and tools are blunt the machining quality is deteriorated and
resistance to the feed increases (motors overload)
2. Check the function of the anti kick-back fingers - they should be sharp and fall loosely under
their weight
3. Connect the moulder to sawdust extractor
4. Set (according to Fig. 10)
a)
adjust the required cutting width ‘’B’’ by use of screws 10 and 11 (Fig. 3) distributing the
machining allowances on samples x
3
and x
4
symmetrically, if possible, among
individuals tools.
Notice
:
The guide bars 4I, 4II and 4 III must be absolutely parallel the rear guide bar 7 (the rear guide
bars left 7 & 8 must be set to allow the free outfeed travel of the wood after planing)
b)
adjust height of tools, in particular the profile cutters – by use of screws 12 (Fig. 3)
(preliminary adjustment can be made by applying distance bushes)
c)
set the side pressure rollers 5 and 6 with a little pressure (if an element moves away form
the guides 4 I and 4 II when being machined, increase the pressure).
d)
Set the thincknesser’s table at the desired dimension ‘’h’’ – to begin with buttons 31, 32
(Fig 4.), then precisely by using hand wheel 21 (Fig 3).To eliminate possible errors
caused by play in worm- screw gears the dimension should always be set from down
upwards.
e)
set the allowance ‘’X
1
’’ by use of edging machine table (after the table has been set one
has to lock it by use of wheel 18 (Fig 3)).
Notice:
One should pay, particular, attention not to violate the admissible allowances that have been
assumed in the construction; for the edging machine 5 mm, and 6 mm for the thicknesser (in
case the thickness of an starting element is greater than [h + 5 + 6] mm one has to plan it
preliminarily because of its thickness).
In order to protect the moulder from being damaged when violating the maximum allowance for
machining on the thicknesser (X
2
) the machine has been equipped with an electro-mechanical
device witch disconnects the feed of the material on the table.
