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Producing with a Trumpf Producing with a Trumpf Punch PressPunch Press
Mike MillerMike Miller
Emech 210Emech 210
4-10-024-10-02
Specifications of a Trumpf Model Specifications of a Trumpf Model TRUMATIC 500 ROTATION Punch PressTRUMATIC 500 ROTATION Punch Press
220 kN Punching force (49,500 lb)220 kN Punching force (49,500 lb)
Handles up to 8mm thick sheets (5/16 in)Handles up to 8mm thick sheets (5/16 in)
Linear tool magazine that holds 18 toolsLinear tool magazine that holds 18 tools
121.5 x 65 in working range121.5 x 65 in working range
60 in/sec X-axis travel speed, 40 in/sec Y-axis 60 in/sec X-axis travel speed, 40 in/sec Y-axis travel speedtravel speed
900 hits per minute high speed punching900 hits per minute high speed punching
Sorted removal of finished partsSorted removal of finished parts
Light barrier safety fenceLight barrier safety fenceInfo from Info from www.trumpf.comwww.trumpf.com
Pictures of a Trumpf Punch PressPictures of a Trumpf Punch Press
Pictures of a Trumpf Punch PressPictures of a Trumpf Punch Press
How it WorksHow it Works
The hydraulic head rapidly forces the inserted punch The hydraulic head rapidly forces the inserted punch through the piece.through the piece.
The die of just over the size of the punch prevents the The die of just over the size of the punch prevents the metal from moving or bending.metal from moving or bending.
Strength of Materials ReasoningStrength of Materials Reasoning
Applied shear force over area exceeds the Applied shear force over area exceeds the materials Ultimate shear strength.materials Ultimate shear strength.
Ex. 1 in. Circular PunchEx. 1 in. Circular Punchττ = V / A where V = shear force and = V / A where V = shear force and
A = thickness A = thickness times circumferencetimes circumference
ττ = 49.5 kip / ( 5/16 * 2 = 49.5 kip / ( 5/16 * 2ππ(0.5)) in(0.5)) in22
ττ = 50.4 ksi = 50.4 ksi
Strength of Materials ReasoningStrength of Materials Reasoning
The ultimate shear strength for 2014-T6 The ultimate shear strength for 2014-T6 Aluminum is 42 ksi while it is only 27 ksi for Aluminum is 42 ksi while it is only 27 ksi for 6061–T6 Aluminum6061–T6 Aluminum
The applied shear stress has obviously The applied shear stress has obviously exceeded the ultimate shear strength, causing exceeded the ultimate shear strength, causing the piece to breakthe piece to break
Smaller punches apply larger stresses because Smaller punches apply larger stresses because of the decreased area, this allows for slightly of the decreased area, this allows for slightly thicker plates to be used if necessarythicker plates to be used if necessary
Punches over 1 in. are angled on the bottom, Punches over 1 in. are angled on the bottom, also reducing the area the force is acting overalso reducing the area the force is acting over
Punching PossibilitiesPunching PossibilitiesFactory Example Piece
Punching PossibilitiesPunching Possibilities
Refrigerated Truck Parts
Fancy Range Hoods
Various Airplane Parts
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