generating gear grinding infeed in mm per stroke (pass) infeed in mm per stroke (pass) feed rate in...
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![Page 1: GENERATING GEAR GRINDING Infeed in mm per stroke (pass) Infeed in mm per stroke (pass) Feed rate in mm/Rev. Feed rate in mm/Rev. Shift Movement](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649dc95503460f94abf5d2/html5/thumbnails/1.jpg)
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GENERATING GEAR GRINDINGGENERATING GEAR GRINDING
Infeed in mmper stroke (pass)
Infeed in mmper stroke (pass)
Feed rate in mm/Rev.
Feed rate in mm/Rev.
Shift MovementShift Movement
![Page 2: GENERATING GEAR GRINDING Infeed in mm per stroke (pass) Infeed in mm per stroke (pass) Feed rate in mm/Rev. Feed rate in mm/Rev. Shift Movement](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649dc95503460f94abf5d2/html5/thumbnails/2.jpg)
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Grinding Perfect Gears: A Tough Puzzle? Grinding Perfect Gears: A Tough Puzzle?
DressingDressing Grinding WheelsGrinding Wheels
CoolantCoolantQualityetc.
Qualityetc.
MachineMachine
PerfectGears
PerfectGears
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Causes of Gear Errors: Profile Deviations Causes of Gear Errors: Profile Deviations
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Causes of Gear Errors: Lead ErrorCauses of Gear Errors: Lead Error
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Causes of Gear Errors: Burning & CrackingCauses of Gear Errors: Burning & Cracking
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Causes of Gear Errors: ConcentricityCauses of Gear Errors: Concentricity
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- good profile form
1 1 Profile Form Profile Form
![Page 8: GENERATING GEAR GRINDING Infeed in mm per stroke (pass) Infeed in mm per stroke (pass) Feed rate in mm/Rev. Feed rate in mm/Rev. Shift Movement](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649dc95503460f94abf5d2/html5/thumbnails/8.jpg)
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- diamond worn on one side- insufficent grinding allowance- insufficient amount of shifting- grit size of wheel too fine
one or two sidedone or two sided
2 2 Profile Form Profile Form
![Page 9: GENERATING GEAR GRINDING Infeed in mm per stroke (pass) Infeed in mm per stroke (pass) Feed rate in mm/Rev. Feed rate in mm/Rev. Shift Movement](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649dc95503460f94abf5d2/html5/thumbnails/9.jpg)
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- unbalanced grinding wheel- spindel, workpiece out-of round- wrong change gears 3 3 Profile Form Profile Form
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- wrong profile angle on grinding wheel- wrong value for differential change gears (AZA, NZA)
4 4 Profile Form Profile Form
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- wobble, faulty fixturing tooling- tailstock centres damaged/faulty- workpiece spindle bearings damaged 5 5 Profile Form Profile Form
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- unfavorable gear flank/ grinding wheel contact sequence- profile loss on wheel, shifting too small- grinding wheel too soft 6 6 Profile Form Profile Form
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- insufficient profiling of grinding wheel- tooth profile of grinding wheel too thick
7 7 Profile Form Profile Form
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- root relief of grinding wheel excessive
one or two sidedone or two sided
8 8 Profile Form Profile Form
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- correct alignment
9 9 AlignmentAlignment
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- insufficient overtravel
10 10 AlignmentAlignment
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- grinding wheel imbalance- feed per rev. excessive- grinding spindle ouf-of round- flange damaged
11 11 AlignmentAlignment
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- insufficient load angle compensation- error in spindle drive system
12 12 AlignmentAlignment
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- wobble, centres, fixturing faulty- tailstock centre inprecise- workpiece spindle out-of-round 13 13 AlignmentAlignment
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- work head inclination angle wrongly set- backlash in change gears incorrect
14 14 AlignmentAlignment
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- wrong value for differential gears- differential gear train out-of-round
15 15 AlignmentAlignment
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- crowning erratic on left flank due to excessive clearance between stylus and stylus bushing (non-CNC machines only) 16 16 AlignmentAlignment
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- multi-start grindng when number of teeth divided by number of starts equals even, whole number.