Automatic precision feeding mechanism
By using proper master pitch gears (change gears A and
B pair), the tap is correctly fed at the rate of one pitch
of its thread, while making one full revolution, same system
as lathe. This is a unique feature of the brother Hi-Tap,
which has these advantages:
accurate threads can be tapped with rapid succession
and precision. No excessive thrust force is exerted
by feeding the spindle sleeve in and out, and
thus the thread is never fractured or overcut.
High quality threads can be tapped in such elastic or
fragile materials and light alloys, as accurately as
to tap in hard substances such as cast irons.
is no extra pressure (downward & upward) exerted
on the parts. No parts clamp is needed except
for preventing parts from rotating, thereby speeding
up the tapping process. So, more simple and convenient
jig can be used.
Repeat cycle and single cycle. No skill required
By a mere turn of the selecting knob, brother Hi-Tap
will operate on a repeat or single cycle. A foot switch
is also available, freeing the operator's hands. Since
the brother Hi-Tap is fully automated, enabling operators
to have hands free to load and unload the parts, the machine
requires little skill to produce high-quality parts.
Precise and simple control of the stroke length
The length of the tapping stroke can easily be adjusted
for high accuracy. Because of simple and accurate
automatic reversal mechanism, any length of tapping stroke
can be adjusted to the high accuracy. This is especially
important in blind-hole tapping application.
High speed repeat cycle
In repeat cycle, the machines can endure in high
speed operation, such as 40 cycles per minute in model BT0,
50 cycles in model BT1 and 20 cycles in model BT2, because
of using a specially designed motor produced by Brother
Industries, Ltd., the highest quality magnetic switches,
and limit switches.
Double friction clutch eliminated tap breakage
Excessive load on the tap due to wear or undersized
drilled hole, triggers release of the spindle rotational
friction clutch. In case the tap is fed into the wrong
point or meets some obstacles, the feed friction clutch
is designed to idle.
6. High productivity with multi-spindle head fitting
and special machine using
These machines can be attached multi-spindle head and
maken specially designed machine by using horizontal one.
So, work efficiency can be more increased.