Tin Knocker TK 2248 User guide

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TIN KNOCKER

TK 2248 BOX & PAN BRAKE

INSTRUCTIONS & PARTS DIAGRAM

Shown with Optional Stand

TAAG MACHINERY CO.

(Master Distributor)

1257-B Activity Dr.

Vista, Ca 92081

Tel: [phone] Fax: [phone]

Website: www.tinknocker.com * Email: [e-mail]

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121106 mod1

TIN KNOCKER

SAFETY RULES

TK 2248 BOX & PAN BRAKE

1. Never use a machine or tool for anything other than its intended purpose. Use the

proper tool and equipment for the task.

2. Do not operate the machine in excess of its rated capacity.

3. Never use a pipe or bar on the clamp or bending apron handles for additional

leverage.

4. Keep clear of the counterweight and apron swing area, while operating the brake.

WARRANTY

All new machines are sold with a one-year limited warranty, on factory defective parts.
The warranty is limited to the original user. TAAG Machinery Co. at its option, will
repair, replace or refund the purchase price of any part, tool or machine that fails during
the warranty period. TAAG Machinery Co. will pay normal shipping charges for
replacement parts. After 90 days from date of purchase, all express or overnight delivery
charges are the responsibility of the customer. Purchaser must deliver to TAAG
Machinery Co., at the address below, any written claim, with proof of original purchase.
Replacement parts will be invoiced to purchaser and credit issued when the failed part is
delivered to TAAG Machinery Co. Removal, reinstallation or replacement parts shall be
at purchasers’ / user’s expense. Failure due to improper use of the machine voids the
warranty.

NOTE: 1. This machine has been tested and adjusted prior to shipment, but can and
often does require readjustment due to vibration and bouncing during transport.
Following the procedures described within can easily do readjustment. These are
procedures with which you, as a user, should be familiar, as you will use them repeatedly
over the life use of the machine. If you have difficulty in performing these procedures,
we are here to support you. Call us at: [phone].

2. Opening rolls (for Philipsburg Lock) are consumable items and not subject to
warranty.

TAAG MACHINERY CO.

(Master Distributor)

1257-B Activity Dr.

Vista, Ca 92081

Tel: [phone] Fax: [phone]

Website: www.tinknocker.com * Email: [e-mail]

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TK 2248 Box & Pan Brake,

RECEIVING THE MACHINE

Inspect before signing Bill of Lading. Upon receipt closely examine the machine for
damage during shipment. Any loss or damage should be noted in detail on the
delivery receipt and reported to your distributor immediately. Free replacement from
TK International is dependant upon the notation on the Bill of Lading or delivery slip.

INSTALLING THE MACHINE

Locate the Brake on a solid, level floor. The Brake must be securely bolted to the
floor. Be sure you have adequate room to swing both handles and Bending Leaf.

PRECAUTIONS

DO NOT use the Brake to bend rods, nails or wires. This will cause damage to the
edge of the top blade. DO NOT exceed the capacity of the Brake.

OPERATING THE TK 2248 Box & Pan Brake

Your brake is a general-purpose tool for bending and forming sheet metal. The brake
is operated in the following manner. Pushing the clamp handles toward the rear of the
brake opens the hold-down of the brake. Insert the material to be bent into the
opening between the hold-down and base assembly and clamp the material in place
by pulling the clamp handles forward. Raise the apron to bend the material to the
desired angle.

Allowing for metal thickness - The hold-down assembly must be adjusted to allow for
clearance when making bends, according to the thickness of the material being
formed. This adjustment is made by slightly releasing the clamping pressure on the
clamp handles and moving the forward edge of the fingers back, away from the edge
of the clamp block on the base. This movement is accomplished by loosening the
bracket lock bolts – one on each end of the base assembly – and turning the adjusting
bracket nuts to move the edge of the fingers toward or away from the edge of the
clamp block. For 16 to 20 gauge materials allow a clearance equal to twice the
thickness of the material being worked. For lighter gauges, allow a clearance equal to
one and one half times the thickness of the material. A larger bend radius can be
accomplished by increasing the clearance.

Clamping pressure – Clamping pressure should be adjusted according the thickness of
the material being worked. A common cause of bending and forming problems is
excessive clamping pressure. Clamping pressure should be adequate to hold the
material securely in place but not so great as to require undue effort in locking the
clamp handles. Clamping pressure is adjusted by turning the nuts on the threaded rod
portion of the yoke assembly below the clamp swivel. The lift of the hold-down
assembly is adjusted by turning the nut above the clamp swivel. When the clamping
pressure is properly adjusted, lock the nuts against the clamp swivel to prevent any
change in adjustment.

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Capacity – The capacity of the brake with the apron support angle attached is 22 gauge
mild steel or 28-gauge stainless steel. The minimum recommended flange in capacity
material with the apron support angle in place is one inch. The capacity of the brake is
reduced by four gauges when the apron support angle is removed; i.e. 26-gauge mild steel
or 30 gauges stainless. The capacity of the brake is reduced by seven gauges when the
apron insert is removed. By removing the apron support angle and apron insert, narrow
reverse bends are possible in lighter gauge materials.

Bending and repeat bends - Bending is accomplished by clamping the work piece under
the hold-down assembly so that the desired line of bend is held at the forward edge of the
fingers and by elevating the apron assembly until the desired degree of bend is obtained.
The maximum degree of bend is approximately 140 degrees. Due to the ”spring back” in
various materials some over bending may be required to get the desired bend angle. For
repeat bends, adjust the stop on the stop rod to limit the swing of the apron assembly. The
stop is secured in place with a setscrew.

Box and pan bending – The fingers can be removed and repositioned on the hold-down
assembly by moving the clamp handles fully to the rear and loosening the finger clamp
screws. Reposition the fingers to assemble the desired width and secure the fingers to the
hold-down by tightening the finger clamp screws. Be certain that the tops of the fingers
are flush and parallel with the milled edge on the hold-down and that the finger clamps
are parallel with the bottom edge of the hold-down. As a general rule, use the wider
fingers first and fill in with the narrower fingers. Small gaps between the fingers may be
left with no adverse effect to the work piece. The maximum depth of the box or pan,
which can be bent, is four inches.

Adjusting the Brake
Over bending – The hold-down assembly should be moved back on the end where the
over bending occurs by slightly unclamping the clamp handle, loosening the bracket lock
screw and turning the adjusting bracket screw. When the correction is made retighten the
bracket lock screw. When your brake was assembled at the factory it was adjusted for
proper operation. Due to handling and repositioning, the brake may require adjustment
and alignment. Read the adjustment and operating instructions completely before making
any adjustments. Operate the brake and bend some material first before attempting any
major adjustments.

Base alignment – The clamp block on the base of the brake should be straight. This is the
reference point for all of the other alignment operations in adjusting the brake. Raise or
lower the center of the brake by adjusting the center truss rods.
NOTE: Your brake has four truss rods, which facilitate adjustment of the brake’s three
primary weldments. The hold-down has two truss rods bracing the top and rear of the
weldment. Adjustments are accomplished through rotation of the nut located on the studs
mounted perpendicular to the weldments.

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Hold-down Alignment – The forward edge of the fingers on the hold-down assembly
should be even and parallel to the edge of the clamp block on the base. Release any
clamping pressure on the hold-down assembly by pushing the clamp handles slightly to
the rear. Loosen the bracket lock screws at each end of the hold-down assembly and turn
the adjustment bracket nuts to move the forward edge of the fingers to the forward edge
of the clamp block. Check to see that the forward edges of the fingers are flush with the
edge of the clamp block on the base along the entire length of the brake. The central
portion of the hold-down assembly can be adjusted forward/backward and up or down via
truss rod adjustment.

TK 2248 BOX & PAN BRAKE

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FINE NUMBERS FOR THE TK 2248 BOX AND PAN BRAKE

Fine No. Part No. Description No. REQ"D.

1 B&P2248001 BASE ASS’Y 1
2 B&P2248002 HOLDDOWN ASS’Y 1
3 B&P2248003 APRON ASS’Y 1
6 B&P2248006 SET SCREW HINGE BRKT. 2
7 B&P2248007 PIN HINGE 2

7A B&P2248007A

8 B&P2248008 R.H. CLAMP HANDLE ASS’Y 1

9 B&P2248009 L.H. CLAMP HANDLE ASS’Y 1
10 B&P2248010 R.H. YOKE ASS’Y 1
11 B&P2248011 L.H. YOKE ASS’Y 1
13

14
15
16
17
29

30 B&P2248019 SET SCREW, STOP 1
31 B&P2248020 STOP ROD 1

31A B&P2248021 KEY, ROD 1

32 B&P2248022 STOP, SWIVEL 1
33 B&P2248023 NUT, SWIVEL 2
39 B&P2248024 BUSHING PIN 2
40 B&P2248025 RETAINER RING 5
47 B&P2248026 4” FINGER 6
48 B&P2248027 3” FINGER 5
49 B&P2248028 2” FINGER 5
50 B&P2248029 4” FINGER CLAMP 6
51 B&P2248030 3” FINGER CLAMP 5
52 B&P2248031 2” FINGER CLAMP 16
53 B&P2248032 SCREW, CLAMP 1
54

55
72

73 B&P2248037 SCREW, ANGLE 1
74 B&P2248038 INSERT 8
75 B&P2248039 SCREW, INSERT 2
78 B&P2248040 HANDGRIP 2
79 B&P2248041 BUSHING, CAM 2

B&P2248013
B&P2248014
B&P2248015
B&P2248016
B&P2248017
B&P2248018

B&P2248033
B&P2248034

B&P2248036

Parts For 2248 Box & Pan

PIN HINGE RETAINER RING 2

SCREW BRKT ADJ

NUT, ADJ BRKT

SET SCREW, ADJ NUT

SCREW BRKT LOCK

WASHER, LOCK SCREW

STOP

HANDLE EXTENSION

SET SCREW, EXT
SUPPORT ANGLE

2
2
2
2
2
1

0
0

5

7

83 B&P2248042 BUSHING,YOKE 4
84 B&P2248043 NUT, YOKE ADJ. 2
85 B&P2248044 WASHER, CLAMP 2
86 B&P2248045 NUT, CLAMP 2
87 B&P2248046 SWIVEL, CLAMP 2
88 B&P2248050 STUD FOR HOLD DOWN ASSY. 1

89 B&P2248051 ALLEN WRENCH

90 B&P2248052 Pivot Stud for Nose Bar Adjust. Eccentric

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