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Standard grinding cycles and multi-steps graphic

Inner through
Inner through
2 Step straight hole
2 Step straight hole
Inner through hole + outer end-face
Inner through hole + outer end-face
Inner blind hole + Inner end-face
Inner blind hole + Inner end-face
Inner taper
Inner taper
Inner blind hole + ID chamer
Inner blind hole + ID chamer
Inner radius groovin
Inner radius groovin
Inner through hole + Inner radius
Inner through hole + Inner radius
Multi-step grinding
Multi-step grinding
Profile grinding
Profile grinding
Form grinding
Form grinding

Machine Design Feature

iGrind Operation

High speed box type dressing.

With EGM high speed box type dressing function, it drastically reduces the wheel dressing time.

This function allows the operator to input the specifications of the dresser and the geometric data of the profile to create the optimal dressing path.


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Grinding Sample
Specification

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EGI-150 CNC
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EGM-350 CNC
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EGM-350L CNC
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EGM-450 CNC
General capacity Max. grinding ID mm 300 φ400 φ300 φ400
Max. grinding OD mm φ300 φ400 φ330 φ400
Swing over workhead mm φ500 φ500 φ340 420
Max. grinding depth mm 200 260 280 260
Max. weight of workpiece kg 50 50 300 (w/ steady rest) 50
Max. length of workpiece mm 200 300 750 300
Type of workhead Single feeding wheelhead Dual indenpendent wheelhead Dual indenpendent wheelhead Dual indenpendent wheelhead
Workhead 3-Jaw chuck Hydraculic - 8"/10"(opt.) Hydraculic - 8"/10"(opt.) Manual- 8"/10"(opt.) Hydraculic - 8"/10"(opt.)
Swiveling angle range deg +15°~ -5° +15°~-5° +15°~ -5° +15°~ -5°
Manual travel distance (toward Z axis) mm 250 250 550 250
Spindle speed rpm 0~1000 (Variable speed) 0~1000 (Variable speed) 0~1000 (Variable speed) 0~1000 (Variable speed)
Servo motor rated power kw 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M)
Spindlehead(Y axis) OD grinding wheel size mm N/A N/A N/A φ405x50xφ127
ID grinding wheel size mm N/A φ100 φ100 N/A
Max. spindle speed rpm N/A 10,000 (std.) 10,000 (std.) 1300 (std.)
Spindle motor/ max. torque Kw/Nm N/A 3.75Kw / 13Nm 3.75Kw / 13Nm 3.75Kw / 26Nm
Wheelhead(Z axis) OD grinding wheel size mm N/A φ100 φ100 N/A
ID grinding wheel size mm φ100 N/A N/A φ100
End-Surface grinding spindle (Opt.Z2) mm φ80(CBN) N/A N/A N/A
Max. spindle speed rpm 20,000 (std.) 20,000 (std.) 20,000 (std.) 20,000 (std.)
Spindle motor/ max. torque Kw/Nm 3.75Kw / 13Nm 3.75Kw / 13Nm 3.75Kw / 13Nm 3.75Kw / 13Nm
X axis Travel mm 400 420 420 450
Rapid feedrate m/min 8 8 8 8
Heidenhain linear scale resolution um 0.05 0.05 0.05 0.05
Min. increment mm 0.0001 0.0001 0.0001 0.0001
Servo motor rated power Kw 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M)
Y axis Travel mm N/A 350 350 350
Rapid feedrate m/min N/A 8 8 8
Min. increment mm N/A 0.0001 0.0001 0.0001
Servo motor rated power Kw N/A 1.8(F)/2.2(M) 1.8(F)/2.2 (M) 1.8(F)/2.2(M)
Z axis Travel mm 350 350 350 350
Max. rapid feedrate m/min 8 8 8 8
Min. increment mm 0.0001 0.0001 0.0001 0.0001
Servo motor rated power kw 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M)
Motor Hydraulic motor Kw 0.75 0.75 0.75 0.75
Coolant pump Kw 0.37+0.18 0.37+0.18 0.37+0.18 0.37+0.18
Machine Net weight kg 5000 5800 6800 6300
Gross weight kg 5500 6300 7300 6800
Packing size (L x W x H) mm 3350x2250x1950 3350x2250x1950 4000X2250X1950 3350x2250x1950
Standard accessories
Control system: Mitsubishi M80 or FANUC 0i-TF with 10.4” screen
Three-direction dresser stand x 1 set, diamond dresser x 3 pcs
Wheel spindle surface detecting & crash control system (current indicator)
Grease type grinding wheel spindle: (Select 2 pc from 8,000~50,000RPM)
Hydraulic 8" 3-jaw chuck (w/ solid roary cylinder)
MPG handwheel: EGI 2 Axes, EGM 3 Axes control
X Axis Heidenhain linear scale (resolution 0.05 um)
Electricity cabinet w/ heat exchanger
Standard coolant tank 140L
Automatic lubrication system
4-color indication signal light
Levelling bolts and blocks
Tools & tool box
Electrical wiring diagram
Operation manual & part lists
Full-enclosed splash guard
Workhead spindle A2-5
Electrical lubricator
LED working light
Optional accessories
Mitsubishi controller (M80) dressing program: Radius / Taper / Multiple step / form shape
Mitsubishi controller (M80) iGrind program
Coolant system with magnetic separator & paper filter
Coolant system with magnetic separator
Coolant system with paper filter
CE standard electrical cabinet
Electrical cabinet air conditioner
Grease type grinding wheel spindle
Oil mist type grinding wheel spindle
Workhead spindle A2-6 (65mm thru-hole)
Manual strong type 7" 3-jaw chuck
Oil & mist collecting system
Spindle oil mist lubrication system
ID auto. gauging device
Diamond roller dressing device
Dressing sensor system
Soft-Jaw turning assembly
B axis linear scale w/ digital readout
Safety door lock
The spindle head design places the center of gravity at the rear portion to help balancing the whole spindle mechanism to increase spindle accuracy and loading capacity.
Spindle driven by servo motor offers optimum speed and torque performance.
X axis lower slide design offers easy adjustment of the workhead for grinding parts with different lengths.
Complete one piece cartridge spindle can avoid the eccentricity of spindle housing and reduces the heat increase for spindle longevity.
Low-gravity base structure, with slant bed design for better coolant draining and grinding swarf removal.
C1 grade precision ball screw with large leading pitch is used to achieve high accuracy.
Machine incorporates roller type linear guide ways for X/Z/Y axes for high dynamic rigidity and better loading capacity. This drastically increases the grinding accuracy.
Low-gravity base structure and operation panel are designed to meet ergonomic requirement
Combinations of grinding operations for internal, external, end-face, groove, radius, internal & external step, and taper grinding can be executed in one chucking. Thus, it greatly increases grinding efficiency and also ensures better concentricity and accuracies of the ground parts.
EGM350 series CNC control systems are available for MITSUBISHI* or FANUC** control. It also can be operated with graphic conversational programming (Option) Therefore, it eliminates the need for G-code programing, and is easy to learn and use for grinding operation even for beginners.
(Mitsubishi M80 / Fanuc 0i-TF)