Page 30 - MetalForming September 2016

MAXIMUM PRODUCTION FLEXIBILITY.
MAXIMUM PRODUCTION FLEXIBILITY THANKS TO FREELY PROGRAMMABLE STROKE HEIGHTS AND MOVEMENT SEQUENCES. Clear increase in output in comparison to conventional mechanical presses. Higher return on investment. Ideal for high-strength steel forming. Better part quality and die life spans thanks to slide movement sequences which are optimally adapted.
Your contact
Booth C17078
message home at the upcoming Met- alForming magazine/Precision Metal- forming Association Servo Technology Experience, October 5-6, 2016, in Nashville, TN. The two-day event fea- tures these day-one presentations on press technology:
• Lewalski’s talk on justification and return-on-investment strategy;
• A discussion on energy manage- ment with Stamtec sales manager Lee Ellard and Siemens engineer Tim Barry; and
• A case-study presentation by Komatsu president Jim Landowski.
Attendees also will attend breakout sessions with press builders Schuler, Komatsu and Stamtec to dig deeper into how and where servo presses are impacting the performance of metal- formers—now and into the future.
Day two of the conference turns attention to servo-related pressroom technologies, including coil-feed sys- tems, transfer automation, software for simulating transfer-press processes, and in-die servo systems for part inspection and measurement. Speakers include James Barrett from Link Sys- tems; Paul Stirrett from Linear Transfer Automaton; and Mark Hansen from T-Sim Solutions.
ROI with Servo
While a stamper’s return on invest- ment (ROI) in a servo press certainly will vary based on factors including part volumes, workpiece material and
part complexity, justifying the price difference between a conventional mechanical press and a servo press often falls in the 1 to 2-yr. range, explains Lewalski.
“There’s definitely the potential to bring in additional revenue with a servo press,” he says, “because you can pro- duce more. And, you can stamp complex parts that likely yield more profitability than does production of simple part geometries. Stampers also need to con- sider capacity planning when conducting an ROI analysis—a servo press can often produce as much as two or even three conventional mechanical presses can, depending on the nature of the work. So, ROI discussions need to include the additional savings in overhead (opera- tors, training, maintenance, etc.). Another factor to consider is a reduction in die- maintenance activities, since the opti- mized speed of a servo press (reduced ram speed during forming, for example) minimizes detrimental effects on the tooling, such as heat and impact.”
All of this will come to light during Lewalski’s presentation at the Servo Technology Experience. He’ll also dis- cuss the reasons that companies are investing in servo presses, and will pro- vide part studies (see the accompany- ing table) that illustrate the productivity gains stampers can expect from servo presses as compared to conventional mechanical presses. He’ll then begin a discussion on how servo presses allow stampers to better coordinate press
28 MetalForming/September 2016
www.metalformingmagazine.com
Servo Technology
Servo Press Increases Throughput—
Time studies of actual production parts, formed in progressive dies
Formed Part
Flange
Gas-generator holder Holder
Cage
Gripper-rail drive unit ...and in transfer dies Center console
Insert cup
Tank filler neck
Side panel
Geared ring
Seat part
Press Force (kN)
2500
2500
2500
4000
8000
11,000 11,000 16,000 16,000 16,000 25,000
Draw Depth (mm)
30 60 40 50 65
190
130
145
80
45
130
Max. Strokes/Min.
Conventional
Servo
% Increase
87
60 100 67 100
42
88
29
53
40
50
30 56 25 40 30 60 30 50 20 40
12 17 8 15 14 18 19 29
15 21
16 24