Open Access
Table 1
Results for process performance comparison of PECH with PECF in finishing of straight bevel gears.
| Response | Gear condition | by PECH | by PECF |
|---|---|---|---|
| Volumetric MRR (mm3/s) | 0.18 | 0.105 | |
| Avg. value of Ra (μm) | Unfinished | 2.13 | 1.80 |
| Finished | 1.28 | 1.60 | |
| Avg. PDRa (%) | 40.0 | 11.1 | |
| Avg. value of Rmax (μm) | Unfinished | 12.7 | 15.1 |
| Finished | 9.70 | 9.60 | |
| Avg. PDRmax (%) | 23.5 | 36.4 | |
| Avg. value of Rz (μm) | Unfinished | 11.1 | 12.0 |
| Finished | 7.05 | 9.60 | |
| Avg. PDRz (%) | 37.0 | 20.0 | |
| Single pitch error ‘fp’ (μm) | Unfinished | 20.8 | 23.1 |
| Finished | 19.4 | 24.8 | |
| Avg. PDFp (%) | 6.7 | -7.3 | |
| Adjacent pitch error ‘fu’ (μm) | Unfinished | 19.3 | 23.4 |
| Finished | 17.0 | 25.2 | |
| Avg. PDFu (%) | 11.9 | -7.7 | |
| Cumulative pitch error ‘Fp’ (μm) | Unfinished | 57.8 | 77.7 |
| Finished | 56.7 | 85.6 | |
| Avg. PDFp (%) | 2.0 | -10.2 | |
| Runout ‘Fr’ (μm) | Unfinished | 35.9 | 34.3 |
| Finished | 33.3 | 41.7 | |
| Avg. PDFr (%) | 7.2 | -21.6 | |
| Vicker's micro-hardness value (HV) | Unfinished | 631 | 630 |
| Finished | 723 | 631 | |
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