JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 48

FEATURE
milling

lnnovative new hybrid metal composite four-disc
milling cutter reduces machining times by 78%

Ing. Robin Poul, PhD.,
Head of Analytical Design
Compo Tech PLUS, spol. s r.o.
Ing. Pavel Kožmín, PhD.,
Head of R&D
HOFMEISTER s.r.o.

A

n added cost benefit for manufacturers
is that the cutting edge durability of the
new hybrid tool, which has 40 extra
cutting inserts, is almost five times greater.
Exceeding expectations
The new milling tool collaboration project
was initiated by HOFMEISTER s.r.o. after
receiving an inquiry for a four-disc milling tool
from a leading European chain manufacturer
looking to improve output rates and reduce
production costs. By using CompoTech's
carbon fibre technology in the design and
production, a new lightweight CF composite
and steel hybrid milling tool was successfully
developed with two additional cutting discs.
The new four-disc hybrid tool was well within
the specified Doosan Mecatec HM63H twin
pallet horizontal machining centre's 25kg
maximum weight limit; this was not achievable using four conventional metal disc cutters,
which individually weigh 7.93kg.
To further boost machining performance, the
novel hybrid tool design included additional
cutting inserts per disc. The hybrid milling
tool has a total of 64 cutting inserts on four
discs compared with only 24 on the standard
two-disc milling cutter. The net result was

48

CompoTech PLUS, spol. s r.o has developed a new hybrid
metal and carbon fibre (CF) composite milling cutting disk in
collaboration with HOFMEISTER - Innovation. With an initial
ambitious target of a 50% reduction in overall machining time,
the final design exceeded the goal. The hybrid four-disc tool
increased both the cutting speed and feed rate. The result is
a high productivity hybrid milling tool that can operate 78%
faster on the same milling centre than a standard steel twodisc cutter.

vastly superior machining performance,
reducing the machining time of a forged steel
chain link component from 45 to 10 seconds,
exceeding expectations (Figures 1 & 2).

Fig. 1: Individual metal and hybrid carbon milling
disc cutters manufactured by CompoTech and
HOFMEISTER. The new hybrid tool design uses
a lightweight epoxy composite with ultra-high
modulus carbon fibres (CF) for the inner section
of the individual milling discs; the CF section is
integrated with the steel hub and ring using a
combination of an interlocking shape design and
steel bolts.

Focus
Key production benefits of the new hybrid
four-disc milling tool include:
-	 Lower inertia moment, resulting
in lower energy consumption cost
savings
-	 -	Lower thermal-mechanical load on
milling machines
-	 -	Better anti-vibration damping
properties, increasing slot hole
machining accuracy
-	 -	Smoother machine operation,
enabling higher quality surface finish
-	 -	Significantly increased output rates
and productivity

Proven R&D partnership
HOFMEISTER is an established privately
owned engineering company based in
the Czech Republic, which specialises in
the development of complete machining

Fig. 2: New hybrid 4 disc milling cutter assembled. The entire four-disc hybrid milling cutter weighs only
16.25kg, well within the maximum 25kg tool weight limit of the BT50 L 150 mm master mandrel on the
Doosan Mecatec HM63H.

jec composites magazine / N°139 March - April 2021



JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021

Cover
Edito
“We are proud that the HP name has become increasingly popular on the track”
Contents
NEWS
In brief
Raw materials
Agenda
BUSINESS
Matrix - The future of thermoplastic resins
China - “The past three years witnessed very strong growth of the 3D printing market in Asia”
Startup - Setting off to conquer the great outdoors
Reinforcement - BCF: developing industrial production for reinforcement materials and composites
MANUFACTURING
Automation - ATL/AFP device using a parallel link mechanism
Robotization - Bringing Robot-controlled sealing of aircraft components to industrial maturity
Pipes - Redefining GRP and GRE pipe manufacturing
FEATURE - Composites in industry: Strong potential
4D Printing - Printing continuous fibrereinforced parts with industrialgrade AFP tape
Application - Energy-efficient hybrid drive system with a planetary gear
Trends - Composites in U.S. industrial equipment: perspectives on performance
Robotics - “Robotics skills meet high demand in post-Corona recovery”
Milling - lnnovative new hybrid metal composite four-disc milling cutter reduces machining times by 78%
SOLUTIONS
Medical - The world’s lightest wheelchair
Hunting rifle - RTM carbon fibre stock for a hunting rifle
Composites among us - Electric vehicles
Hand finishing - Surface roughness measurements after hand-finishing of uneven GFRP surfaces
TECHNOLOGY
Out of autoclave - Nextshaft Integral drive shaft
Pitch fibre - Development of a pitchbased carbon fibre, a solution for wide-ranging needs
Index
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JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Cover
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 2
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Edito
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - “We are proud that the HP name has become increasingly popular on the track”
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 5
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Contents
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 7
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - In brief
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 9
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Raw materials
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 11
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Agenda
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 13
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Matrix - The future of thermoplastic resins
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 15
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - China - “The past three years witnessed very strong growth of the 3D printing market in Asia”
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 17
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Startup - Setting off to conquer the great outdoors
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Reinforcement - BCF: developing industrial production for reinforcement materials and composites
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 20
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 21
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 22
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 23
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 24
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 25
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Automation - ATL/AFP device using a parallel link mechanism
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 27
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Robotization - Bringing Robot-controlled sealing of aircraft components to industrial maturity
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 29
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Pipes - Redefining GRP and GRE pipe manufacturing
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 31
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 32
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 33
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 4D Printing - Printing continuous fibrereinforced parts with industrialgrade AFP tape
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 35
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 36
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Application - Energy-efficient hybrid drive system with a planetary gear
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 38
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Trends - Composites in U.S. industrial equipment: perspectives on performance
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 40
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 41
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 42
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Robotics - “Robotics skills meet high demand in post-Corona recovery”
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 44
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 45
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 46
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 47
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Milling - lnnovative new hybrid metal composite four-disc milling cutter reduces machining times by 78%
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 49
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 50
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Medical - The world’s lightest wheelchair
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 52
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Hunting rifle - RTM carbon fibre stock for a hunting rifle
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Composites among us - Electric vehicles
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 55
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Hand finishing - Surface roughness measurements after hand-finishing of uneven GFRP surfaces
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 57
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 58
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Out of autoclave - Nextshaft Integral drive shaft
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 60
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 61
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Pitch fibre - Development of a pitchbased carbon fibre, a solution for wide-ranging needs
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 63
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 64
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 65
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - Advertisers
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 67
JEC COMPOSITES MAGAZINE - Issue #139 - March/April 2021 - 68
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