| SYNCHROBELT | |
|---|---|
| CALCULATION REPORT | |
| Order : | Dware |
| Project : | Saw Bench |
| Subproject : | Spindle Drive |
| Project item : | Timing Belt Transmission |
| Wheel1 ID : | TBP-00001 |
| Wheel2 ID : | TBP-00002 |
| Calculated by : | André Dewispelaere |
| Organization : | Dware |
| Date : | 23-05-2015 |
| Input Load | Symbol | Unit | Pulley 1 | Pulley 2 |
|---|---|---|---|---|
| Power load on smaller wheel | P | kW | 20.000 | -- |
| Torque load on smaller wheel | T | N.m | 0.000 | -- |
| Rotational frequency | n | Hz | 16.6667 | 0.00000 |
| Rotational speed | N | rpm | 1000.000 | 0.0000 |
| Torque load on larger wheel | T | N.m | -- | 0.000 |
| Driver is | -- | -- | Pulley 1 | -- |
| Estimated belt efficiency | ηc | -- | 1.000 | 1.000 |
| Load calculations | Symbol | Unit | Pulley 1 | Pulley 2 |
| Power | P | kW | 20.000 | 20.000 |
| Rotational frequency | n | Hz | 16.66667 | 5.14706 |
| Rotational speed | N | rpm | 1000.0000 | 308.8235 |
| Torque | T | N.m | 190.986 | 618.431 |
| Transmission ratio | i | -- | 3.23809 | 3.23809 |
| Transmission design | Symbol | Unit | Value |
|---|---|---|---|
| Application factor | KA | -- | 1.35 |
| Target transmission ratio | itarg | -- | 3.250 |
| Number of teeth pulley 1 | z1 | -- | 21 |
| Number of teeth pulley 2 | z2 | -- | 68 |
| Transmission ratio | ic | -- | 3.23809 |
| Deviation from target ratio | Δi | % | -0.37 |
| Requested safety factor | SP | -- | 1.50 |
| Synchro belt designation | Synchroflex T | ||
| Synchro belt |
|---|
| Nr , Description , Type , p , h_t , h_b , c , b , F_p |
| -- , ----------- , ---- , mm , mm , mm , - , mm , N |
| 151, Synchroflex T , T20 , 20.000, 5.00, 8.00, 0.142, 50.0, 7750 |
| Design calculation | Symbol | Unit | Value |
|---|---|---|---|
| Modified tangential force | Ftc | N | 3857 |
| Permissible force | Fp | N | 7750 |
| Working safety factor | SP | -- | 2.01 |
| Belt velocity | vt | m/s | 7.00 |
| Maximum belt velocity | vtmax | m/s | 40.00 |
| Pitch | p | mm | 20.000 |
| Belt width | b | mm | 50.0 |
| Pitch circle diameter pulley 1 | dw1 | mm | 133.690 |
| Pitch circle diameter pulley 2 | dw2 | mm | 432.901 |
| Minimum center distance | amin | mm | 283.3 |
| Maximum center distance | amax | mm | 1133.2 |
| Preferential center distance | apref | mm | 380.0 |
| Required belt length | Lwc | mm | 1700.0 |
| Required number of belt teeth | zrc | -- | 85 |
| Choosen belt length | Symbol | Unit | Value |
| Belt length in catalogue | Lw | mm | 1700.000 |
| Number of belt teeth in catalogue | zr | -- | 85 |
| Center distance from belt length | aLw | mm | 375.0 |
| Tensioning displacement | stns | mm | 17.0 |
| Wrap angle pully 1 | β1 | °.dec | 133.0 |
| Number of teeth in mesh | zi | -- | 7 |
| Specific power load | Pspec | W/mm | 77.1 |