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Prepare operation process sheet and sequence of operation by taking suitable example. Assume suitable cutting parameters.
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Example: Prepare operation process sheet and sequence of operation for the Ring nut shown in figure. Assume suitable cutting parameter and raw material ɸ50 × 10 mm blank of carbon steel.
Part Name: Ring Nut
Material: Carbon steel
Part no: mm, blank
Material Size: Φ 50×10
Opn no | Description of operation | Machine used | Tools /Fixtures used | Feed mm/rev | Cutting speed m/min | Depth of cut mm |
---|---|---|---|---|---|---|
01 | Clamp the blank in chuck and face one side | Centre lathe no… | H.S.S.,R.H. Turning tool | 0.0025 | 30 | - |
02 | Reverse the blankin the chuck and face other side (Made Width =7.5) | ------”------ | ------”------ | 0.025 | 30 | _ |
03 | Drill hole , Φ 27 by fitting drill in tail stock spindle | ------”------ | Drill Φ27 | Medium | 30 | _ |
04 | Internal threading m 30×1.5 | ------”------ | Boring bar | 6 | _ | |
05 | Turn Φ45 | ------”------ | Mandrel | 0.025 | 30 | 1.0 |
06 | Chamfer 0.5×45ᵒ | ------”------ | R.H.Tool | 0.025 | 30 | _ |
07 | Reverse the job and chamfer 3.5×30ᵒ | ------”------ | ------”------ | 0.025 | 30 | _ |
08 | Mill slot (4 no.) 5×2 Deep | Horizontal Milling machine No…… | Mandrel ,side Milling Cutter of 5 mm width | 07/ Tooth | 25 | 3 |
09 | Grinding one side | Cylindrical Grinding Machine No | Indexing head | _ | 100 | 0.05 |