ASME B5.52-2003

(Revision of ANSI B5.52M-1980)

Power Presses: General Purpose, Single-Point Gap Type

AN A MERICAN NA TIONAL S T AND ARD

ASME B5.52-2003

(Revision of ANSI B5.52M-1980)

Power Presses: General Purpose, Single-Point Gap Type

AN AMERICAN NA TIONAL S T AND ARD

Three Park Avenue • New York, NY 10016

Date of Issuance: December 15, 2004

This Standard will be revised when the Society approves the issuance of a new edition. There will be no addenda or written interpretations of the requirements of this Standard issued to this edition.

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Copyright © 2004 by

THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

All rights reserved Printed in U.S.A.

CONTENTS

Figures

1. Examples of Press Types 2

2. Squareness 12

3. Linear Frame Deflection 13

4. Angular Frame Deflection 13

5. Press Data Plate: Mechanical Press 14

6. Press Data Plate: Hydraulic Press 14

7. Counterbalance Data Plate 14

8. Die Cushion Data Plate 15

9. Press Designation System 15

10. Press Capability Graph (Metric) 16

11. Press Capability Graph (U.S. Customary) 17

Tables

1. Standard Capacity Ratings 3

2. Standard Rating Points 3

3. Usable Flywheel Energy 3

4. Stroke and Shutheight Related Dimensions 4

5. Bed Area Related Dimensions 5

6. Bolster Related Dimensions 6

7. Bolster Mounting Slot Dimensions 7

8. Bolster Mounting Bolts: Bench Presses 8

9. Bolster Mounting Bolts 9

10. Slide Related Dimensions: Bench Presses 20 kN (2 tons) Through 160 kN

    (18 tons) 10

11. Slide Related Dimensions: Presses 160 kN (18 tons) Through 2 500 kN

    (280 tons) 11

12. Pressure Pin 11

13. Pressure Pinhole Patterns 12

14. Parallelism 12

    Mandatory Appendices

    1. Metric/U.S. Customary Conversion 19

    2. Mechanical Power Press Capacity 20

    3. Usable Flywheel Energy 22

FOREWORD

Recognizing the need for a standard for mechanical power presses, The American Society of Mechanical Engineers’ Committee on Machine Tools and Components (B5) reestablished Technical Committee 30 in December 1973 to develop an American National Standard addressing the interchangeability of bolsters, press tooling, and mounting provisions between general purpose presses of comparable bed size, capacity, and type.

The B5-TC30 membership consists of a balance between manufacturers, users, accessory suppli- ers, and others associated with power presses. The committee’s work was based on the JIC (Joint Industry Conference) Press Room Standards, once the most widely used document, to develop a standard for mechanical power presses, and on basic data submitted by U.S. manufacturers of power presses.

On December 22, 1980, the American National Standards Institute approved ANSI B5.52M- 1980, Mechanical Power Presses General Purpose Single Point, Gap Type (Metric). This standard was reaffirmed in 1994.

On April 19, 2000, the committee completed drafting of ASME B5.61-2003, Power Presses: General Purpose, Single Action, Straight Side Type, and prepared to submit it for approval to the American National Standards Institute. The expanded scope and revised format of this document led to the committee decision to revise ANSI B5.52M-1980 to bring it into conformance with the new format. The decision was made to include hydraulic and pneumatic power presses in the revised standard for general purpose, single-point gap type presses. ASME B5.52-2003 was approved by ANSI on July 7, 2003.

ASME B5 STANDARDS COMMITTEE

Machine Tools — Components, Elements, Performance, and Equipment

(The following is the roster of the Committee at the time of approval of this Standard.)

OFFICERS

C. T. Wax, Chair

J. R. Bird, Secretary

B5 COMMITTEE PERSONNEL

J. R. Bird, Secretary, The American Society of Mechanical Engineers

A. M. Bratkovich, The Association for Manufacturing Technology

C. J. Gregorovich, C. J. Gregorovich & Associates

J. Homsey, Boeing

D. King, Parlec

D. L. Lewis

C. D. Lovett, National Institute of Standards and Technology

G. R. Rawlinson, Rawlinson & Associates

W. S. Roorda, Alcona Associates

H. Soons, National Institute of Standards and Technology

R. C. Spooner, Powerhold, Inc.

C. T. Wax, Scully-Jones Corp.

TECHNICAL COMMITTEE 30 — POWER PRESSES

K. J. Koroncey, Chair, General Motors Corp.

T. Werding, Secretary, Schuler Hydroforming Inc.

R. Boge, Smedberg Machine Corp.

A. M. Bratkovich, The Association for Manufacturing Technology

G. Clouse, Oak Products, Inc.

D. L. Cota, Benchmaster Inc.

C. J. Gregorovich, C. J. Gregorovich & Associates

W. S. Roorda, Alcona Associates

A. Sambel, Schuler Inc.

E. D. Steinke, The Minster Machine Co.

L. A. Wood, Whirlpool Corp.

CORRESPONDENCE WITH THE B5 COMMITTEE

General. ASME Standards are developed and maintained with the intent to represent the consensus of concerned interests. As such, users of this Standard may interact with the Committee by proposing revisions and attending Committee meetings. Correspondence should be addressed to:

Secretary, B5 Standards Committee

The American Society of Mechanical Engineers Three Park Avenue

New York, NY 10016-5990

Proposing Revisions. Revisions are made periodically to the Standard to incorporate changes that appear necessary or desirable, as demonstrated by the experience gained from the application of the Standard. Approved revisions will be published periodically.

The Committee welcomes proposals for revisions to this Standard. Such proposals should be as specific as possible, citing the paragraph number(s), the proposed wording, and a detailed description of the reasons for the proposal, including any pertinent documentation. Attending Committee Meetings. The B5 Standards Committee regularly holds meetings, which are open to the public. Persons wishing to attend any meeting should contact the

Secretary of the B5 Standards Committee.

ASME B5.52-2003

POWER PRESSES: GENERAL PURPOSE, SINGLE-POINT GAP TYPE

1. SCOPE, PURPOSE, AND APPLICATION

   
   

   1. Scope

      This Standard applies to hydraulic and mechanical power presses having a one-piece frame that guides the slide and supports the bolster, adjustable bed, or horn. The frame is configured to provide unrestricted access to the front and sides of the die space. By means of dies or tooling attached to the slide and bolster or horn, these machines are used to shear, punch, form, or assemble metal or other materials.

      This Standard includes only the following types of presses:

      1. bench

      2. open back inclinable (OBI)

      3. open back stationary (OBS)

      4. adjustable bed/horn

         See Fig. 1 for examples of press types.

         
         

   2. Purpose

      The purpose of this Standard is to define and describe gap frame power presses, and their interface, to permit interchangeability of bolsters, dies, and tooling compo- nents between presses of comparable type, size, and capacity.

      
      

   3. Application

      Any power press described as an American National Standard power press shall comply with the applicable requirements of this Standard.

      
      

2. DEFINITIONS AND TERMINOLOGY

   Terms used in this Standard are defined in ASME B5.49.

   
   

3. METRIC/U.S. CUSTOMARY RATIONALIZATION

   
   

   1. Metrication

      All units of dimension and capacity stated herein are in accordance with ASME B5.51M. Approximate U.S. customary units shown in parentheses are for reference only. Wherever used in this Standard, the unit tons denotes U.S. tons.

   2. Metric/U.S. Customary Conversion

      Appendix I provides conversion multipliers applica- ble to this Standard.

      
      

4. PRESS CHARACTERISTICS

   1. Rated Capacity

      See Table 1.

      
      

   2. Rating Points (Mechanical Power Presses)

See Table 2.

1. Drive Design. Drive design shall be based on providing the torque that produces the rated press capacity at the rating point.

2. Press Capacity. Press capacity at points other than the rating point are shown

1. in Table II-1 for presses rated at 1.6 mm (1⁄16 in.)

2. in Table II-2 for presses rated at 3.2 mm (1⁄8 in.)

3. in Table II-3 for presses rated at 6.3 mm (1⁄4 in.)

1. Energy Capacity (Mechanical Power Press)

   1. Function of the Flywheel. The energy required for performing press operations is stored in the flywheel. During the working portion of the press cycle, the fly- wheel slows down as it supplies the required energy to the drive train.

   2. Function of the Drive Motor. The drive motor restores flywheel energy during the nonworking portion of the press cycle, which may include the interval between press cycles for presses operating in single stroke modes.

   3. Drive Motor Selection. The selection of the drive motor is dependent upon the energy requirements. Fac- tors determining the energy requirements are the

1. rated capacity

2. press speed (strokes per minute)

3. press stroke

Based on the optimum slide velocity for the material being worked, a longer stroke press will be required to operate at a slower speed than a shorter stroke press. The longer the stroke, the deeper the draw that can be made, and the greater the energy required to sustain

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