| How to Calculate for - |
Metric Count Yarn
Worsted Count Yarn Cotton Count Yarn Cabling BCF Operative Loading |
|
| MEtrIC Count | R.P.M x 2 x 60 x efficiency Turns per metre x resultant count metric x 1000 |
= kilo per spindle per hr. |
| Example 1: Weaving Yarn |
Nm 48.8/2 (resultant Nm 24.4) t.p.m.: 790 Spindle Speed: 9,000 r.p.m. Efficiency: 95% 9000 x 2 x 60 x 0.95 790 x 24.4 x 1000 |
= 0.053 kilo per spindle per hour |
| Example 2: Carpet Yarn |
Nm 5/2 (resultant Nm 2.5) t.p.m.: 118 Spindle Speed: 5,000 r.p.m. Efficiency: 90% 5000 x 2 x 60 x 0.9 118 x 2.5 x 1000 |
= 1.83 kilo per spindle per hour |
| Take-Up-Speed | R.P.M x 2 Turns Per Metre |
= metres per minute |
| WORSTED Count |
R.P.M x 2 x 60 x efficiency
Turns per inch x 36 (inch/yard) x 560yds/lb x resultant count x 2.2 (lbs/kilo) |
= kilo per spindle per hr. |
| Example 3: |
Count 36/2 (resultant 18) t.p.i.: 12 Spindle Speed: 8,000 r.p.m. Efficiency: 90% 8000 x 2 x 60 x 0.9 12 x 36 x 560 x 18 x 2.2 |
= 0.09 kilo per spindle per hour |
| COTTON Count | As for WORSTED but840 instead of 560 | |
| CABLING BCF: | Say 2 x 1260 decitex 5500 rpm 160t/m |
|
| 1. 5500 x 60 min 160 x t/m |
= 2062.5 metres per hr. |
|
| 2. 2 x 1260 = resultant 2520 decitex | = 0.252 grms/mtr. | |
| 3. 1 Spindle in 168 hours @ 100% efficiency metre/hr x grms/metre x hrs 1000 |
||
| 2062.5 x 0.252 x 168 1000 |
= 87.3 kilo |
|
| VTS-05 OPERATIVE LOADING |
Purely twisting, no other work - element times are HM = 1/100 minute | |
| Package weight: 5 kilo (5000 grammes) Breakage rate: .15 breaks per kilo |
||
| Change Feed Package | 1000 x 50 5000 |
= 10 |
| Change Output Package | 1000 x 20 5000 |
= 4 |
| Repair | .15 x 50 |
= 7.5 |
| Patrol | = 7 28.5 |
|
| + 20% Personal | = 5.8 34.3 |
|
| Total HM/kilo | = 34.3 |
|
| 6000 34.3 |
= 174.9 kilo per operative per hour |