microfactory precision engineering (Nhà máy siêu nhỏ Gia công siêu chính xác)

Features of Microfactory: • Decreased driving energies • Decreased inertial forces • Flexibility in manufacturing • Fine positioning accuracy and smooth movement • Precision manufacturing • Eco and User friendly

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A Seminar on

Microfactory and Micro Machine

Tools

Presented by Todkar Mahesh S.

M.Tech-I Manufacturing Engineering

Under the Guidance of

Mr V Vasu

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Microfactory and Micro Machine Tools

Introduction:

• What is Micro?

• Why Micro Machine Tools and Microfactory?

• Microfactory:

Downsized or Miniature manufacturing systems

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Microfactory:

• Proposed by,

MEL, Japan, in 1990

• Composed of,

Machining area &

assembly area

• Area required,

500mm X 700mm

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Features of Microfactory:

• Decreased driving energies

• Decreased inertial forces

• Flexibility in manufacturing

• Fine positioning accuracy and smooth movement

• Precision manufacturing

• Eco and User friendly

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Micro-lathe:

• 1st Micro-lathe developed

in 1996 by MEL, Japan

• Specifications,

l= 32 mm, w= 25 mm

h= 30.5 mm, W= 100 gms

P= 1.5 W, N=10000 rpm

• Accuracy, 1.5-2.5 μm

• Min dia achieved, 60 μm

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Micro-milling machine:

• Specifications,

l= 170 mm, w= 170 mm

h= 102 mm

P= 36 W, N=15600 rpm

• End mill of 4 mm shank dia And

end mill cutter dia is 100 μm

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End mill cutter:

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Micro-press machine:

• Specifications,

l= 111 mm, w= 66 mm

h= 170 mm, P= 100 W,

AC servo motor

Press load, N=3 kN

• 60 strokes per min

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Micro transfer arm:

• Specifications,

h= 200 mm

3 DC servo motors,

for rotation & expansion

of arm and 3rd for

end-effector

• Work within circle of

200 mm with accuracy of 20 μm

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Two-fingered Micro hand:

• Specifications,

OD= 48 mm, h= 65 mm

Two 50 mm long fingers

• Resolution of finger

is <= 1 μm

• Can work in rang of

100 X 100 X 30 μm

• Max controllable size,

200 μm

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Revised Micro Machine Tools:

1 Revised Micro-lathe with NC:

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Revised Micro Machine Tools:

1 Revised Micro-milling machine with NC:

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Research and Development:

• Japanese Mechanical Engineering Laboratory (MEL, Japan);

• Desk-Top Factory study group in Okaya (Okaya, Japan);

• Micro Machine Center (MMC, Japan);

• University of Tokyo (Japan);

• Danish Micro-Factory project consortium;

• Fraunhofer-Institute for Production Automation (IPA, Germany);

• Tampere University of Technology (Finland); etc

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Currently used Micro Machine Tools:

• Micro-lathe

• Micro metal forming Machine

• Micro imprinting device

• Desk-top EDM machine, in AGIE Switzerland,

• Micro ECM machine

• Desk-top multi-process machine

• 5-axis micro milling machine

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Advantages:

• Improving space utilization factor,

• Reducing the price and energy consumption,

• Facility investment,

• Light weight of facilities

• High accuracy machining,

• Eco and User friendly,

• Reduction in Size of mechanical parts

• Improved production rate,

• Precision of machinery

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Disadvantages:

• Difficult to manufacture the micro machine tool parts and components,

• Requirement of special working environments,

• Huge cost involved

• Requirement of number of miniature CCD cameras

to monitor the operation in process,

• Problems associated during handling of micro parts

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Conclusion:

• Saves Space, Power and Material

• Trend of miniaturizing the manufacturing machines

• Trend of miniaturizing the manufacturing machines and systems

• Stimulus to the design of entirely new production systems in the future

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References:

Journal Names:

• Development of desktop machining Microfactory

• Microfactory and Micro Machine Tools

• Micro-forming and miniature manufacturing systems—

development needs and perspectives

• Micro Engineering

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Thank you

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