Drafting System
AssemblyThe heart of the machine: a three-over-three or four-over-four roller arrangement that grips the doubled slivers and pulls them out to a fraction of their fed thickness, with pressure-loaded top rollers and a high main draft in the front zone. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Drafting System
8 top-level lines as of r49826| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Bottom Drafting Roller | draw-frame-bottom-roller | 4× | 4 | · | part |
| 2 | Top Pressure Roller | draw-frame-top-roller | 4× | 4 | · | part |
| 3 | Top Roller Pressure Arm | draw-frame-pressure-arm | 1× | 1 | · | part |
| 4 | Draft Change Gearbox 4 parts | draw-frame-draft-gearbox | 1× | 1 | 0 | assembly |
| 5 | Top Roller Clearer | draw-frame-clearer-roller | 2× | 2 | · | part |
| 6 | Helical Gear Pair | gear-pair | 3× | 3 | · | part |
| 7 | Servo Motor 4 parts | servo-motor | 2× | 2 | 0 | assembly |
| 8 | Ball Bearing | ball-bearing | 8× | 8 | · | part |