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The case of Dressing Hob Cutter

2021-03-18
  1. Hob cutter
Work piece Hob cutter
Material High speed steel with titanium aluminum nitride coating
Hardness HRC64-68
Allowance 0.2-0.3mm
Roughness Ra≤0.2μm
Accuracy The straightness of single tooth top to tooth root is 0.005mm, the straightness of the whole hob is 0.01mm from left to right, and the teeth in the circular direction are equally divided into 0.1mm
Other Grinding surface grain consistent, no burn vibration marks

 

02 Grinding wheel parameters

Grinding wheel Grinding wheel for dressing Hob cutter
Specification 4C9 150Dx15Tx3.5Wx50H
Bond Vitrified bond CBN wheels

grinding

03 Machine Parameters

Machine LUREN-LHS-3040
Spindle speed Spindle speed
Grinding allowance 0.2-0.3mm
Dressing WA oil stone 220#
Dressing frequency 1-2 piece/times
Feed speed 600-1000mm/min
Dressing time 25-30 min

 

04 Grinding result

Item MORE Top brands in Japan Note
Specification 4C9

150Dx15Tx3.5Wx50H

Vitrified bond wheels

4C9 150Dx15Tx3.5Wx50H

Resin bond wheels

Linear speed 54m/s 54m/s same
Processing time 25min 25min same
Dressing time Manual Manual same
Dressing frequency 1-2 piece/dressing 1 piece/dressing
Dressing amount Manual Manual same
Roughness Ra≤0.2 0.08-0.1μm 0.1-0.12μm MORE with

better roughness

straightness 0.005mm 0.005mm same
Life 100 hob cutter 70 hob cutter MORE with longer life

Grinding result

Through the above cases, we can see that the service life of our grinding wheel increased by 43% compared with the foreign competing grinding wheels under the same processing quality; Production efficiency increased by 5%. the combined cost was reduced by 35%. Our grinding wheels have higher quality and longer service life, which can bring better comprehensive processing cost to customers.