Hybrid Additive Manufacturing application and advanced

Hybrid Additive
Manufacturing
Somnath Chattopadhyaya
Associate Professor,
Department of Mechanical Engineering,
Indian Institute of Technology (Indian School of Mines),
Dhanbad, Jharkahand,
Email: somuismu@gmail.com

Definition
Hybrid Additive Manufacturing till date is
known as the object-oriented combination
of laser cladding and CNC operation
within a single machine environment.
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Slides of Hybrid Additive Manufacturing - Somnath Chattopadhyaya

Definition
•Hybrid additive manufacturing has
been attracting a lot of attention over
the past half a decade or so but it is
still in its infancy with lot of
technological hiccups that have to be
adroitly addressed.
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Definition
•It refers to a new class of machine tool that
brings the additive metal deposition nozzle
capability of the latest three dimensional printing
together with the axis control and metal-cutting
capabilities of modern machining centers.
•This combination means that metal deposition
can be performed along various axes.
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Definition
•The 3D printed material can be machined to
precise tolerances at any stage in the process,
even going back and forth between metal
deposition and metal cutting as often as
required.
•This adroit combination of additive and
subtractive manufacturing is the basis of the
term: hybrid-additive manufacturing.
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Hybrid-additive manufacturing will fundamentally change the
perception of manufacturing components
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Importance
•Give food to the people who are hungry and
give hunger to the people who have food.
– Publo Neruda (1904 – 1973)
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Importance
•This powder deposition process allows one to place
material in the desired composition exactly where one
wishes to have it (and nowhere else).
•One can manufacture things which are impossible to
make in any other way, including:
•Internal voids, webs, honeycombs and lattice structures
•Internally-embedded components
•Parts with custom nonhomogeneous (graded) materials
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9
* Veiled Rebecca of Salar
Jung Museum, Hyderabad
* It stands at a height of
167.0 cm with the statue
and its round pedestal
carved from a single block
of marble without any
joints.

Veiled Rebecca
•This life-sized sculpture of Rebecca
represents innocence and purity as
Giovanni Benzoni skilfully creates the
appearance of a transparent veil, an
outstanding artistic creation.
10

Intricate works of Dilwara templeThis temple carved entirely out of white marble was built
in 1031 A.D. by Vimal Shah, a minister of Bhima I, the Chaulukya King of Gujarat
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Slides of Hybrid Additive Manufacturing - Somnath Chattopadh
yaya
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Tiger Sharpening his claws

Living Root Bridges of Meghalaya
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Slides of Hybrid Additive Manufacturing - Somnath Chattopadh
yaya
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Chemonasty of Plants

Importance Hybrid Additive Manufacturing
•As a result, material composition and
placement become design variables, and
engineering part performance can be
dramatically improved.
•It might not be too ambitious to say that
this technology will be the important
catalyst for the next industrial revolution.
15

•The relevant software provides support
for new hybrid-manufacturing
technologies in which additive
manufacturing (3D printing or metal
deposition) is incorporated with
subtractive (cutting) methods in a
conventional machine-tool environment.
16

•These manufacturing techniques will reform the
way one thinks about manufacturing parts.
• By building complex and complicated
geometries, including internal cavities, and then
machining them for close and challenging
tolerances as they are manufactured, new classes
of machine parts can be manufactured, or many
setups may be compacted into one.
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•On the face of it, the dueling production techniques of
additive and subtractive seem like they would be
difficult to combine together, and, in some aspects,
they are.
•But if both additive and subtractive have been
synchronized appropriately, they can offer powerful
novel capabilities to manufacturing industries willing
to comprehend these new manufacturing processes.
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Potential of Hybrid Additive Manufacturing
•• Enable new designs
•• Machine internal areas during build
•• Repair parts easily
•• Tightly control tolerance during build
•• Produce finished parts on one machine
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Automatic and semiautomatic decomposition of parts into features for additive/subtractive operations
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The additive manufacturing toolbar
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In-process workpiece and verification works for both additive and subtractive modes
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Surfaces or features can be additively applied to a part that is otherwise
machined
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On this impeller, blade tips of a different material from the rest of the blade have been added using the additive head.
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After the material has been added in this way, the machine tool can swap in
a milling cutter to machine these new tips flush with the rest of the blade
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Some machine tool actually uses two of the
Hybrid heads, one for quickly growing rough
forms and one for growing fine ones
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The Hybrid Additive subtractive machining center additively creating a
part feature
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Hybrid part manufactured by the combination of Deep drawing and LBM
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The additive head allows additive to be used only where needed in the
part-making cycle
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3D printing with a metal deposition nozzle
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Categorisation of Addtive manufacturing process with conventional
methods
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Summary
•Science-enabled technology
development for 5-axis Hybrid
Additive Machining Center
• Robotic free-form deposition system
•Commercialization of technologies
with existing Industry linkages
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References
•[1] NX 11: Neue Entwicklungstechnologie für ein
neues Innovationszeitalter, www.siemens.com/plm
•[2] Slides of Ramesh Singh Machine Tools Lab,
Department of Mechanical Engineering, Indian
Institute of Technology Bombay
•[3] Marion Marklein et. al.,Friedrich-Alexander-
Universität Erlangen-Nürnberg, Egerlandstr. 13,
91058 Erlangen, Germany
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Hybrid Additive Manufacturing application and advanced

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