Paragon CNC centerless grinding machines

Paragon Centerless Grínding Machínes
CNC Seríes
H Seríes
B Seríes
Economícal Seríes
CE

CENTERLESS GRINDING MACHINE
CNC SERIES
Advanced Desígn Concept
CNC Centerless Gríndíng Machínes
Every PARAGON centerless grinding machine is designed and manufactured based on the following management concepts: Application of the newest technology and innovation , Endless improvement and progress and
Customer satisfaction with accuracy and quality .
The CNC series centerless grinding machines can be used for infeed grinding and thrufeed grinding to ensure accuracy and high productivity in workpieces with diameters between 1 mm and 50 mm.
Applícable lndustries:
Aerospace parts
Medical applications
Precision bearings
High precision machine parts
Hydraulic Pneumatic systems
Electrical / Electronic equipments
Automotive motorcycle parts,etc...
Cutting tools

FANUC Controller
PARAGON CNC series centerless grinding machines have the latest technology in
digital control systems each with a monochrome screen.
To give you the most complete and latest advancements in CNC technology,
PARAGON provides a unique, convenient operating interface to reduce set-up time
and increase efficiency.
Automatically memorizes the grínding wheel position in case of power failure.
Modern CNC control systems are extremely reliable and optimally tuned to the drive
elements for high accuracy profile grinding.
 Emergency stop button.
 Colorful graphic display and Manual Pulse
Generator (MPG) hand wheel for easy adjustment.
Counter input of offset value and dressing compensation.

Unparalleled Quality Assurance and Control
The systematic development, production and assembly are carried out in a process oriented manner and in strict compliance with ls0 9001 directives.
PARAGON's O.C. staff conducts rigorous quality control throughout the entire manufacturing process before shipment.
Our quality control process includes: a) Strict lncoming Materials lnspection; b) Geometric Accuracy lnspection; c)
Unloaded Spindle Test and d) Grinding Test.
Quaiity Assurance
Over and Over Again, PARAGON's Dedication to Quality Wíns Customer's satisfaction and Loyalty.
In order to produce the highest quality & value-added products, PARAGON has invested a great amount in purchasing up-to-date and sophisticated automatic manufacturing equipment and measuring devices, including a CNC Horizontal Machining Center, Roundness Measuring instrument, Roughness Measuring lnstrument, Coordinate Measuring Machine, etc., and a nearly 13,200 square meter air conditioned plant, all of which is to provide a controlled environment and to improve the quality assurance.

Flexíble and Hígh Productívíty
Centerless Gríndíng Machíne Confíguratíon Table
Model Gríndíng Wheel Spindle Bearíng Regulatíng Wheel Spíndle Bearíng
CNC (Hydrostatic)
CNC Seríes
Hydrostatíc bearíng
Hydrodynamic bearíng
NN roller bearing
NN roller bearìng
H Series Hydrostatic bearing NN roller bearíng
B Series Hydrodynamíc bearíng NN roller bearing
Economical Seríes Hydrodynamíc bearíng Hydrodynamíc bearing
Note: In the NN roller bearing series, the regulating wheel has a precision servo motor which provides infinite variable speed change from 0-300 rpm. The servo motor is driven directly by worm and gear.

Both grinding wheel and regulatng wheel spindles
are made of high quality alloy steel (SNCM-439) and treated through: normalized, tempered,
carburized hardening and then sub-zero treatment (below zero degrees celcius). Its hardness is more than HRC 62°. Then follows the precision grinding process: rough grinding, semi-finish grinding, finish grinding and lapping. The lapping process assures
superior surface finish and greatly enhances spindle life and stability guaranteeing deformation free performance throughout its durable senıice life.

Unique Design
Hydrostatic bearings of the grinding spindle are surrounded
by high pressure oil film, eliminating metal-to-metal contact, overheating, oil
leakage since no oil seals are utilized, providing less power consumption, high rigídity and high vibration damping performance.

Fine hand scraped hydrodynamic bearings made of steel and phosphor bronze alloy with
oil lubrication, firmly maintains grìnding spindle high precision
rotation and rigidity to stand heavy duty grinding in a minimum gap.

No Flange, No Ddeflection
The innovative advanced regulating wheel spindle does not require a flange and utilizes precision angular contact bearings and NN roller bearings with double supports that firmly
maintain spindle super precision rotation and rigidity.

Fine hand scraped hydrodynamic bearings made of steel and phosphor bronze alloy with
oil lubrication, firmly maintain grinding spindle high precision rotation and rigidity to stand heavy duty grinding in a minimum gap.

The machine base is manufactured from high quality Meehanite cast iron, low center of gravity, featuring rigidity over
10$ N/m and natural frequency over 150 Hz and analyzed by advanced Finite Element Method
(FEM). Along with vibration stress release, these outstanding
structural features assure high strength, maximum damping
capability and longer service life.
The C1 class ballscrews feature hydrostatic lubrication, low friction coefficiency, and pretensioned for increased rigidity and high positioning accuracy, providing minimum feeding accuracy in 1 μ m.
(For CNC Centerless Grindíng Machine)

Regulatíng Wheel Dressíng
Unít
The angle of the regulating wheel dressing unit can be swiveled according to workpìece requirements in order to enhance accuracy.

Upper Slíde
The upper slide can be rapidly and accurately swiveled up to ± 5 degrees for efficient grinding.
The machine base is manufactured from high quality
Meehanite cast iron, low center of gravity, featuring rigidity over 10$ N/m and natural frequency over 150 Hz and analyzed by advanced Finite Element Method
(FEM). Along with vibration stress release, these outstanding
structural features assure high strength, maximum damping
capability and longer service life.
The C1 class ballscrews feature hydrostatic lubrication, low friction
coefficiency, and pretensioned for increased rigidity and high
positioning accuracy, providing minimum feeding accuracy in 1 μ m.
(For CNC Centerless Grindíng Machine)
Guídeways
• Machine Base has extra wide V guideways with great span in between and high frequency hardened surfaces, exhibiting outstanding stability during
grinding operation.
• In combination with fine hand scraped slideways, the axis movement guarantees hígh
accuracy and maximum durability

Pressure Swítch (Standard)
Safety feature integrated with grinding wheel spindle
lubrication system so that the spindle motor won't
rotate until pressure is reached. This prevents the
spindle from dry running and getting damaged.
Dresser for Regulating Wheel and
Gríndíng Whee1 (Standard)
The dressing unit is hydraulic traversed, with adjustable speed. Dressing slides are made of
special alloy cast iron and hand scraped.
Regulatíng Wheel Servo Motor
(B and H Seríes)
Provides infinite variable speed change. The senıomotor is driven directly by worm and gear, this can reduce vibration during grinding and consequently achieve the best results.
Rotary-type Wheel Dressíng Devíce
(Optíonal)
Driven by a servo motor, the desser offers precision profile dressing and high torque output, service time at least 50 times more than a blade-type
dresser.
Automatíc Loadíng & Unloading
Attachment (Optional)
Fully automatic grinding operation that saves labor while enormously upgrading production efficiency

lnfeed centerless grinding is similar to plunge grinding.
The workpiece is placed on the blade, and the regulating wheel moves into a programmed feed to begin the grind. The workpiece does not move axially in this type of centerless grinding.

H Seríes
Economícal Seríes / B Seríes
RC-18 / RC-186 RC-1812 / RC-1812B RC-20 / RC-20B
CNC Seríes
1 AX1S
Regulating wheel upper slìde or lower
slide auto lnfeed
4 AXES
X: Grinding wheel auto dressing (vertical)
Z: Grinding wheel auto dressing (horizontal)
A: Regulating wheel upper slide auto infeed
Y: Regulating wheellower slide auto infeed
Г~ J~
z
~
vı
YІ
%v
2 AXES
X: Grinding wheel auto dressing (vertical)
Y: Regulating wheel lower slide auto
infeed
7
5 AXES
X: Grinding wheel auto dressing (vertical)
Z: Grinding wheel auto dressing (horizontal)
Xı: Regulating wheel auto dressing (vertical)
A: Regulating wheel upper slide auto infeed
Y: Regulating wheellower slide auto infeed
7 AXES
(ALL SLIDES CONTROLLED BY CNC)
X: Grinding wheel auto. dressing (vertical)
Z: Grinding wheel auto. dressing (horizontal)
X,: Regulating wheel auto. dressing (vertical)
Y,:Regulating wheel auto. dressing
(longitudinal)
A: Regulating wheel upper slide auto infeed
Y: Regulating wheel lower slide auto infeed
S: Grinding wheel spindle speed control

3 AXES
X: Grinding wheel auto dressing (vertical)
Z: Grinding wheel auto dressing (horizontal)
Y: Regulating wheellower slide auto infeed

STANDARD ACCESSORIES:
Gríndíng Wheel + Flange

Thrufeed Work Rest + CarbIde B1ade Coolant system (60L)
Regulating Wheel + Flange
Díamond Tool for Truíng

Hydraulíc Coolíng Fan τooІs + Kits Wheel Flange Extractor
nfeed Work Rest lset + Carbíde Blade
Hydraulic system (60L)
Work Lamp
Automatíc Loadíng & Unloading
Attachment for lnfeed Grínding
Manual Work Feeder for lnfeed Gríndíng Hydraulíc Work Ejector for lnfeed
Gríndíng

Jíg Crane wíth Hook for Grinding Wheel 
Gríndíng Wheel Face Dressíng Unít

 Economícal series
■ RC-12
■ RC-16
■ RC-18
■ RC-20
■ RC-1812
• CNC seríes (B or B+H)
 RC-12CNC
 RC-18CNC
 RC-20CNC
 RC-1812CNC
• B series
 RC-12B
 RC-16B
 RC-18B
 RC-20B
 RC-1812B
• H seríes
 RC-12H
 RC-18H
 RC-20H