Hydraulic Press versus Mechanical Press

1
Hydraulic Press versus Mechanical Press

• www.hydraulico.com

2

• Mechanical press
• Single-acting
• Single-acting with passive
• - air cushion in bed/ram
• - hydraulic cushion in bed
• Double-acting (inner and outer ram)
• - passive cushion, pneumatic or hydraulic

• Hydraulic press
• Single-acting
• Single-acting with passive cushion
• - In bed or ram
• Double-acting with inner ram
• Double-acting with active cushion
• (single acting press with active cushion)
• Triple-acting with inner ram and active bed
  cushion
• Triple-acting with passive ram cushion and
  active/passive bed cushion
• (single-acting press with active cushion in ram
  and bed)

3
ABILITY
DEEP DRAWING
PUNCHING PIERCING
FORMING
FLANGING
RESTRIKE
EMBOSSING
TRIMMING
BANKING
4
Hydraulic presses versus mechanical presses
ABILITY
MECHANICAL EXCENTRIC DRIVE PRESS
DEEP DRAWING
PUNCHING PIERCING
FORMING
FLANGING
RESTRIKE
EMBOSSING
TRIMMING
BANKING
5
Hydraulic presses versus mechanical presses
HYDRAULIC PRESS
ABILITY
MECHANICAL EXCENTRIC DRIVE PRESS
DEEP DRAWING
PUNCHING PIERCING
FORMING
FLANGING
RESTRIKE
EMBOSSING
TRIMMING
BANKING
6
HYDRAULIC PRESS
ABILITY
MECHANICAL 8-LINK DRIVE PRESS
MECHANICAL EXCENTRIC DRIVE PRESS
DEEP DRAWING
PUNCHING PIERCING
FORMING
FLANGING
RESTRIKE
EMBOSSING
TRIMMING
BANKING
7
Deep drawing
8
Blanking and trimming
9
Other characteristica

• Hydraulic press
• The programable forming speed and blankholder
  force are optimum
• Programable impact at die closing
• Flexibility to die hights
• Die change index 100
• Run in die index 100
• Fast and simple repair
• Best for low and medium batch quantities
• Cycle time 5 sechandling 2,7-4 sec
• ( 6.6- 8 PPM)
• Dynamic force control 1 PPM ( 3 cyl action)
• Leaks belongs to the past
• LOW Investment

• Mechanical press
• Link presses are more versatile than excentric
  driven presses.
• Excentric presses gives high impact speed at die
  closing ( bad draw condition. Bad for die,
  cushion, clutch and brake.
• Limitations to die hights ( max /-300 mm)
• Die change index 125 - 150
• Run in die index 150 - 300
• Best for high batch quantities
• Cycle time 3.5 sechandling 2.5 4 sec
• (8-12 PPM)
• Expensive and slow to repair
• Risk factor is high in case of break down
• HIGH Investment

10
TRENDS in automotive

• 40 years ago Hydraulic press lines (flexibility,
  low volume, complex part geometry)
• 20 years ago Mechanical presses (high volume,
  simple part geometry)
• Last 10 years Hydraulic and mechanical press
  lines (just in time or high volume)
• Future requirements
• Just In time gt smaller runs gt short change over
  time flexibility
• Low weight gt High strength steel sensible
  controllable forming speeds
• Synchronised load and unload

11
Thank you for watching this presentation

• Hydraulico as
• Raadhusgade 87 8300 Odder Denmark
• Tel. [phone] Fax [phone]
• E-mail info_at_hydraulico.com
• www.hydraulico.com