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Membership Services Seminar

Press Maintenance and Fundamentals of Press Capacity

Holiday Inn Minneapolis Metrodome
1500 Washington Ave. South
Minneapolis, MN 55454
Phone: 612-333-4646
Tuesday, September 18, 2012, 8:00 AM CDT
Tuesday, September 18, 2012, 4:45 PM CDT
For more information, contact (PMA Technical Programming Manager)
View PMA Calendar

Press Maintenance and Fundamentals of Press Capacity Seminar

Tuesday, September 18, 2012

Minneapolis, MN

What is the press designed to do?

Reduce your maintenance.

Is the problem with the tool or the press?
Use the right tool for the job.

You will learn:

Metal Stamping Press Maintenance & Troubleshooting

  • How to quickly make adjustments to the die space to isolate the press problems from the tool
  • How to maximize uptime, even with less than perfect machinery
  • The Theory of the Box
  • Safe metal stamping press operations
  • The full understanding of the design and use of metal stamping presses
  • Efficient and practical preventive maintenance inspection procedures
  • Comparison between hydraulic and mechanical presses and their use
  • Different types of parts that can be produced
  • The importance of proper level and alignment of the press bed and/or frame
  • Terminology overview
  • Troubleshooting

Understanding press capacity

Forward tonnage:

  • Define forward tonnage
  • Show how the mechanical press develops forward tonnage
  • Explain concentrated load and its effect on tooling that can be run
    • Show how to calculate this
    • Review various methods to mitigate the issue
  • Explain off center loading and its effect on tooling that can be run
    • Review symptoms that reveal this capacity is being exceeded
    • Show how to calculate this
    • Review various methods to mitigate the issue

Reverse tonnage

  • Define reverse tonnage
  • Review types of stamping processes that develop reverse tonnage
  • Review symptoms that reveal reverse tonnage capacity is being exceeded
  • Review methods to reduce reverse load generation
    • Tooling methods
    • Shock dampening strategies
    • Press selection
    • Servo Press technology


  • Explain the torque curve and its impact on tooling that can be run
    • Why is there a torque curve?
    • Review symptoms that reveal this capacity is being exceeded
    • Review impact of stagger on torque curve


  • Define energy
  • Show how energy is stored on mechanical and servo presses
  • Review mechanical press designs and the impact on energy capacity
  • Review applications and calculate energy requirements
  • Review symptoms that reveal energy capacity is being exceeded
  • Review the impact of Servo press technology on traditional energy considerations

 Ram velocity

  • Review calculation, demonstrate effect of stroke length on speed in crank motion presses
    • Review tooling processes and the effect of velocity on various processes
    • Review impact of servo technology on the traditional limitations

 Servo press technology

  • Review traditional balancing of tonnage, velocity, energy, torque, stroke length, automation and SPM output
  • Examine impact of the servo press’s capabilities on the traditional balancing act

Who should attend:

Press Operators

Die Setters

Maintenance Personnel

Production Managers

Manufacturing Engineers

Tool Makers

Tool Designers 


Jeff Fredline of Columbia Machine Works is a well known conference speaker. He has written and presented many times for the Society of Manufacturing Engineers and serves as an active member of the Precision Metalforming Association. For the past 10 years he has trained on a private basis for many industry leaders such as General Motors, Chrysler, Whirlpool, General Electric, BAE Systems and numerous smaller companies. Mr. Fredline has a bachelor’s degree in business and has earned journeyman status in the machine repair industry.


Todd Wenzel, President, TCR Inc., has more than 20 years of experience in the metalforming industry. He is the president of TCR Inc., a provider of turnkey metalforming systems and integrated production solutions. Todd’s in-depth field experience and application skills have allowed him to consistently contribute to increasing customers’ growth and success. Todd’s knowledge of punch-press operation and safety and his special understanding of OSHA and ANSI standards have established him as a leading trainer for the industry. Todd also has been a guest author for MetalForming magazine since 2004.



Tuesday, September 18, 2012

8:00 a.m. Presentation

12:00 p.m. Lunch provided

12:45 p.m. Presentation

4:45 p.m. Adjourn


Seminar Location and Hotel Accommodations


Holiday Inn Minneapolis Metrodome
1500 Washington Ave
. South

Minneapolis, MN 55454

877-531-2703 Group code is SES


Please call the hotel directly to make your room reservation and reference the group code SES for Precision Metalforming Association (PMA) to receive our special group rate of $129 (plus tax). Reserve your room by September 3, 2012. Reservations made after this date are subject to availability. Privately owned and managed secure parking is available adjacent to the hotel for $14 per night.

Registration Information

Members: $320 first person   $220 each additional person/s

Nonmembers: $420 first prson $320 each additional person/s