Section 12 / 18
Troubleshooting
Symptom, likely causes in order, how to check, how to fix. Written short enough to read on a phone at the machine.
- Live
- 4
- Pages planned
- 44
- Subsections
- 6
- Release phase
- Phase 1 first three months
Live pages
- 12 Tool problemsTap breakageWhy taps break, in the order to check at the machine: the hole bottom, chips, the hole size, alignment and holding, the cycle, depth, wear, coolant and material; how deep to drill a blind hole; the other tapping faults with their causes and remedies; and when a forming tap or a thread mill is the better tool.
- 12 Tool problemsBuilt-up edge (BUE)Work material that welds to the cutting edge, grows, breaks off and leaves fragments on the part: what it is, which materials and conditions bring it on, what it does to finish, size and tool, and the remedies tool makers give, with the points where they disagree.
- 12 Chip controlLong, tangling chipsWhy a chip comes off long and wraps around the tool and the part, and what to change at the machine in the order of Sandvik Coromant’s list, with the other makers alongside: feed, depth of cut against the nose radius, chip breaker, coolant, entering angle, speed. With coolant pressure bands, drilling and grooving, the opposite fault of chips broken too hard, and the controls that break the chip by oscillating the feed axis.
- 12 Machine and process problemsChatter: how to recognise it and how to stop itWhy a cut starts to chatter (the regenerative mechanism and the phase between two waves), how to tell chatter from forced vibration by its sound and its frequency, what a stability lobe diagram shows and how a tap test feeds it, the remedies makers give for turning, boring and milling in the order to try them, where they disagree, and the spindle-speed functions of Haas, Okuma and DMG MORI controls.
Section map
The subsections of this section and the number of pages planned in each. Pages go live in section order, all on the same template.
- 12.1Surface problems0/9
- 12.2Dimensional problems0/9
- 12.3Tool problems2/9
- 12.4Chip control1/5
- 12.5Machine and process problems1/8
- 12.6Diagnostic tools0/4
In production 4 of 44 planned pages are live. The figure on each subsection is pages live / pages planned.