Table 7 Failure frequency of subsystems in heavy-duty horizontal lathe
From: Weakness Ranking Method for Subsystems of Heavy-Duty Machine Tools Based on FMECA Information
Name | Code | Frequence | Frequency |
|---|---|---|---|
Basic component | BC | 0 | 0 |
Headstock | BB | 17 | 0.030 |
Feed system | FS | 47 | 0.083 |
Tool holder | TU | 20 | 0.035 |
CNC system | NC | 28 | 0.050 |
Electrical system | ES | 60 | 0.106 |
Chip removal system | CC | 33 | 0.058 |
Hydraulic system | HS | 143 | 0.253 |
Center rest | CF | 48 | 0.085 |
Spider device | CD | 13 | 0.023 |
Tailstock | TS | 14 | 0.025 |
Grinding device | GD | 7 | 0.012 |
Drilling device | DD | 2 | 0.004 |
Protective device | PD | 41 | 0.073 |
Cooling system | CS | 62 | 0.110 |