7. Item Specification
Grinding method CNC oscillation grinding
Work support method 2-Shoes+ 1 Magnet Chuck
Machining surface Through hole, blind hole, stepped hole, taper hole, end face
Dressing method Diamond rotary
Grindable workpiece I.D. φ10-120mm
Grindable workpiece width 10～40mm
Chuckable workpiece O.D φ20～130mm
Height of workpiece center 1113mm
Workpiece spindle speed 220～1500r/min
Work spindle box swivel angel ±25°
Table travel(X axis) 120mm
Table speed(X axis) 0.4～333,330 φμm/s
Table travel(Z axis) 400mm
Table speed(Z axis) 0.2～333,330μm/s
Net weight 6.5T
Floor space(L×W×H) 3410×2730×2410
Roundness ≤2μm
Roughness ≤Ra0.2μm
Dimensional precision ≤2μm
Cylindricity ≤2μm
Technical specification
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8. HMN-110 Internal Grinding Machine (centerless type) -Application-Application
This machine tool could be applied to airconditioner compressors, bearings, gears, autoparts, hydraulic
parts and other fields, where materials hard to process.
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9. Competitor And famous customer
Brand Technical specification Service Price
Hermos internal grinding machine Grinding effieciency highRough
and fine grinding
togetherDefective rate within
1/10000Good product consistency
CPK≥1.33
Short deliver time.Quikly
service Providing machine
tool+CBN grinding
wheel+grinding
technology,etc
1/3a
Toyo internal grinding machine
Grinding effieciency highRough
and fine grinding
togetherDefective rate within
1/10000Good product consistency
CPK≥1.33
Long deliver time a
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10. Customer requirement
Workpiece Piston of air condition compressor
Material NiCrMo cast iron
Hardness HRC45-50
Roundness(μm) 2
Cylindricity (μm) 2
Straightness (μm) 1.5
Cpk ≥1.33(±3μm)
Cycle time(s) 30
Purpose Reach high level as Toyo grinder
Dressing time(pc) 50pcs workpices by once dressing
Customer Air condition compressor enterprise
Stock removal(mm) Φ0.27
Waviness(μm) 1.3
Roughness(mm) Rz1.6
Succesul Case1. Internal Grinding (centerless type) for piston of air condition compressor
Equipment
Hermos CNC internal grinding machine (centerless type)HMN-110
Hermos ZK-CBN grinding wheel
Hermos diamond dressing roller
Hermos self-adptive control grinding technology
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11. Succesul Case1. Internal Grinding (centerless type) for piston of air condition compressor result
After grinding---Result
Toyo internal grinding machine (centerless
type )
Hermos internal grinding machine
(centerless type )
Roundness(μm) 0.82μm 0.74μm
Cylindricity (μm) 0.7μm 0.6μm
Straightness (μm) 0.87μm 0.64μm
Waviness(μm) 0.8μm 0.7μm
Roughness(mm) Rz1.2 Rz1.2
Cpk Cpk1.69 Cpk2.3
Cycle time(s) 28s 27.45s
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12. Succesul Case 2. Internal Grinding (centerless type) for bearing
Customer requirement
Workpiece Taper roller bearing outter ring
Material GCr15
Hardness HRC60-64
Cooling way Water
Cycle time(s) 10
Purpose Reduce cycle time as requirement
Customer Japanese bearing manufacturer
Stock removal(mm) Φ0.3
Technical solution and equipment
Machine tool
Grinding wheel
Dresser
Grinding technology
General internal grinding machine
Ordinary SiC grinding wheels
Ordinary dresser
Fixed speed grinding
Hermos CNC internal grinding machine
(centerless type)HMN-110
Hermos ZK-CBN grinding wheel
Hermos diamond dressing roller
Hermos self-adptive control grinding
Item Original grinding way of customer Hermos solution for grinding
Dressing cycle 1pcs workpices by once dressing 100pcs workpices by once dressing
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13. Succesul Case2. Internal Grinding (centerless type) for bearing result
Result after grinding
Cycle time(s) 18
CBN grinding wheel service time (s) 850 pc
Customer grinding After Hermos grinding
9
75000 pcs
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14. Succesul Case 3. Internal Grinding (centerless type) for Sealing Ring of Turbo Charger
Customer requirement
Workpiece Sealing ring of turbo charger
Material 3Gr13
Hardness HRC50~56
Cooling way Water
Purpose Improve processing efficiency
Customer A turbo charger manufacturer
Stock removal(mm) Φ0.15mm
Technical solution and equipment
Machine tool
Grinding wheel
General internal grinding machine
General grinding wheels
Hermos CNC internal grinding machine
(centerless type)HMN-110
Hermos ZK-CBN grinding wheel
Item Original grinding way of customer Hermos solution for grinding
Dressing cycle 1pcs workpices by once dressing 100pcs workpices by once dressing
www.hermosgrinder. com z13889163187@sina.com
15. Succesul Case 3. Internal Grinding (centerless type) for Sealing Ring of Turbo Charger
Result after grinding
Cycle time(s) 9
Roundness(mm) 0.005
Customer grinding After Hermos grinding
2
0.002
Cylindricity(mm) 0.006 0.002
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