Safety and Operation for TC/DC
Self Reversing Tapping Attachments
ISO 9001 CERTIFIED: 802 CLEARWATER LOOP, POST FALLS, ID 83854
PHONE: (800) 854
-
6019 OR (208) 773
-
2951, FAX: (208) 773
-
3021, E
-
MAIL: [email protected], WEB: www.tapmatic.com
Material
Low
Carbon
Steel
High-
Carbon
Steel
Tool
Steel
Hard
SS 303,
304,
316
SS 410,
430,
17
-
4
Hard
SS 17
-
4
Anneal.
Titan.
Alloys
Ni
Alloys
Alum
Alloys
Alum
Die
cast
Magn.
Brass,
Bronze
Copper
Cast
Iron
M/min
(ft/min)
10
-
20
(33
-
66)
8
-
12
(26
-
39)
4
-
6
(13
-
20)
6
-
12
(20
-
39)
3
-
5
(10
-
16)
6
-
12
(20
-
39)
4
-
8
(13
-
26)
3
-
5
(10
-
16)
15
-
25
(49
-
82)
10
-
15
(33
-
49)
15
-
25
(49
-
82)
15
-
25
(49
-
82)
8
-
12
(26
-
39)
10
-
20
(33
-
66)
Tapping Speeds:
The following speed recommendations are for reference only. Please consult tap manufacturer for your specific tap.
Do not
exceed the maximum speed for tapping attachment
shown on the housing.
Tap Diameter in mm
RPM = (M/min) x 318.5
RPM = (ft/min) x 3.82
Tap Diameter inch
4
The torque control helps prevent tap breakage, especially
when tapping blind holes. Tightening the cap down to the
higher number settings on the reference scale increases
torque. To set the torque, use a new tap and begin with a
low number (low torque) setting. Try to tap the hole.
When the clutch slips, there will be no sound from the fiber disc clutch. Stop the
machine and tighten the cap further. Repeat this process until you can drive a
sharp tap to depth. Give the cap a half turn more and lock it using the set screw in
the side of the cap. This system saves the tap from breaking if you accidentally go too deep in a blind hole. It also warns you
when your tap is becoming dull so that you can replace it before it breaks. Make note of the reference number to save time
when the same job comes up again.
Self
-
Feed:
Every tapping attachment has a self
-
feed. What is self
-
feed?
Self feed is the additional depth that the tap will go
into the hole after you feed to the stop on your machine. See the next page for the self
-
feed distances for the TCDC models.
Setting the stop on your machine for tapping
: Please note that the tap will continue
to go deeper into the hole by the self
-
feed distance. The total tapping depth will be
based on the depth you set with your machine stop
plus
the self
-
feed of the tapping
attachment. For example if you would like a tapping depth of 10mm and the tapping
attachment
’
s self
-
feed is equal to 3 to 4mm, start by setting the machine stop to
allow the tap to enter the hole just 6mm. After tapping your first hole, check the
depth and make any necessary adjustments to the machine stop.
Always set the
machine stop to avoid tapping too deep and hitting the bottom of the hole. The
torque control is intended to only be a safety back up in case you accidentally go
too deep.
Tapping Holes:
When tapping, it is not necessary to apply any pressure as you feed
in. The tap will follow it
’
s own pitch in and out of the hole. Just follow along with the tap, keeping up with it as it enters
the hole. After you reach the machine stop, lift up on the feed handle to retract the tap. The tapping attachment will
automatically reverse the taps rotation when you retract. Please note that the speed increases by 1.75 to 1 in reverse,
so you will need to feed out of the hole almost twice as fast as you did feeding in. Be sure to keep up with the tap as it
exits the hole. If you are feeding too slowly going in or out, the tap will stop and start and you will hear a clicking
sound. This clicking sound is not the clutch slipping. If this occurs you need to feed faster to keep up with the tap.
Please note that if the clutch slips because the torque is not set high enough there will not be a sound coming from the
clutch.
Setting the pre
-
selective torque control:
Clutch
adjust-
ment cap