500 Facing operation is started by pressing the retaining
pin. By doing so, the feed control collar is coupled
with the retaining ring, the rotation of which is arrested
by the stop rod. Each of the 12 pressed in push buttons
provide a feed of 0.02mm (0.008") per revolution.
The pre-set stop, upon reaching the stop pin, automatically
disengages the cross feed. Rapid return is effected
manually by the quick - setting screw with the aid of
T-Wretch. For cylindrical turning or boring, the work
diameter is set by means of quick setting screw in conjunction
with the graduated fine-setting screw. After setting,
the slide should be locked in position. Taper turning
and taper threading can be carried by engagir the cross
feed of the head in conjunction with the axial feed
of the machine spindle.
When threading on machines with lead screws, the threading
Tool is moved out by means of the fine setting screws
and retracted by reversing the machine.
260 Facing operation is started by pressing the feed
button. The self-actir cross feed is actuated by rotating
the head and stopping the retaining ring with the stc
rod. By means of an adjustable stop the cross slide
is set for any desired travel. Upon reaching this stop,
the cross slide is automatically disengaged. Whilst
the spindle continues rotating the button for return
movement is pressed causing the slide to return at ten
times the facing feed, to its starting position as fixed
by a second stop. Coarse or fine settings for cylindrical
turning and boring are performed by means of the graduated
collar. The slide maybe locked. Taper turning is effected
by combining the cross feed of the head with axial feed
of the machine.
162 This head is for boring, facing and recessing.
The tool slide has an automatic movement which is actuated
by holding the knurled ring either by hand or by a rod
which can be screwed into the ring. The head is designed
for right-hand operatic Facing slide movement is from
centre outwards. After completing the facing work, return
the slide is to be done manually with an Alien key.
The tool holder has two tool positions for use on different
work diameters. While boring, the slide or the tool
holder is to be locked by means of lock screw to make
it vibration-free. But this lock screw should positively
be released while facing.
These widely known ELMECA 202 & 203 Series Boring Heads
are readily adapted on many machines. An important feature
of these heads is the threaded back which can be fitted
with interchangeable Shanks. All Elmeea boring heads have
a clearly graduated lead screw of heat treated tool steel
with threads ground from solid. AFTER HARDENING.
Since, space is usually an important factor, the overall
length of These Boring Heads is held to minimum. This feature
has the further advantage of contributing to greater tool
rigidity which in turn assures a smoother, more accurately
bored hole. The generous bearing surface of these heads
makes possible heavy roughing cuts, and more accura finish
cuts.
Another important feature is the large adjustment range.
This often eliminates off set bars and special set ups.
Since the graduation are widely spaced and easy to read,
adjustments of 0.0005 and less are easily made. All parts
subject to wear are hardened to guarantee long life and
continued accuracy.
200 Provided withone fixed cam for feed rate and
one adjustable cam the same. Automatic end release and rapid
return by hand.
300 Provided with one fixed cam and two adjustable
cam for Feed rate with automatic end release and rapid return
by hand.
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