Page 41 - MetalForming June 2016

3D METAL PRINTING
magazine connects engineers, manufacturing executives and plant floor leaders with suppliers of 3D metal printing equipment and services, for prototyping and production applications in aerospace, automotive, medical and other industries.
Readers can stay on the forefront of this rapidly expanding industry through:
• New technology write-ups
• Application articles
• Tutorial “how-to” features
Metals are the fastest growing segment of 3D printing, expected to nearly double in size by 2018. It’s time to align with the only publication specifically dedicated to the industry—3D METAL PRINTING magazine.
To receive your complimentary subscription and learn about advertising opportunities, please visit www.3DMPmag.com.
published by PMA Services Inc. 6363 Oak Tree Blvd. Independence, OH 44131 216/901-8800 | Fax: 216/901-9669 www.3DMPmag.com
pad, or adding lock beads.
Wrinkles in the flange area or near
the die radius indicate the presence of in-plane compressive forces that are synonymous with deep drawing. The required blankholder pressure may be as high as 40 percent of the punch force, depending upon materi- al type and thickness. Other options: Reduce the size of the die entry radius, add draw beads or reduce punch-to- die clearance.
Problems Due to Unbalanced Loads
Forming sequences in a progressive die occur much higher in the press stroke than they do during punching and cutting. When the working forces in a progressive die are not distributed evenly, the press slide (ram) can tip and move laterally in the direction of the greatest force. If this movement
occurs with the punches engaged with other die components, excessive wear or damage can occur.
Unbalanced loads may be detectable during the die-strip analysis. Look for punched holes and opposing trim edges where the cutting clearance appears to be too tight on one side of the cut and too loose on the other side. If cutting clearance appears on-cen- ter when the die is out of the press and inspected in the toolroom, chances are good that the die is tipping due to unbalanced loading.
To help ensure part quality, work to maintain an even distribution of the work load across the press slide. This practice also will improve die life and reduce press maintenance. Evaluate the progressive-die strip and the timing of the die stations to better manage die-tipping moments caused by unbal- anced loads. MF
Tooling by Design
Celebrate Female Achievers in Metalforming
We are looking for women in leadership positions or on the shop floor, those who represent dedication to their company and the industry, and demonstrate excellence in meeting their workplace responsibilities. And we need your help.
MetalForming magazine is seeking nominations for its new Women of Excellence in Metalforming section, to run in the November issue. The section will feature and honor those selected as a means to recognize and promote the importance of women in the metalforming and fabricating industries.
Nominees should be employed by a manufacturer of metal parts and components or a supplier to the industry. Nominations can be submitted by visiting MetalFormingmagazine.com/excellence.
Nomination deadline is June 30.
Please nominate only one person from your company.
www.metalformingmagazine.com
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