Каталог Winstar монолитный инструмент 2020 - страница 352

Technical Data Troubleshooting in Drilling 昌⏙␯⽴䛿⿇┮⡯╙⶜䳥 Trouble / ㉔㹐 Occurrences / ┮⡯ Countermeasures / ⶜䳥 1.Check for suitable guide-bush Ҷℎ䚷懸▗Ὶ昌⫦ Becoming thread scratch in the hole 2.Reduce relief angle ヱ㎟奉亚⎽䝤 Ҷ㾪ⶠ朢栨孡〵 3.Check for proper point angle & length of lips Ҷ㰱㥴昌榼ⶥ䱾孡〵╙⋸戙朆〵㞾▵⶜䯀 1.Reduce relief angle Ҷ㾪ⶠ朢栨孡〵 2.Grind web thinning Ҷ匈㤎⏙圓 3.Shortening length of drill Ҷ侽䥼昌榼朆〵虇⨭␯⏪ㆶ Deformation of hole Generation of chattering & vibration䚱䚮槺⑤ҷ㒾⑤ 4.Check for proper drillҶ㰱㥴昌榼孡〵䦣䩷㞾▵㳲䩉 昌ⳣ㎟㯱⢢ 5.Check for chuck & collet & socket Ҷ㰱㥴⫍⌆厖昌榼㔴宇㉔ヱ 6.Pre-centering Ҷ榟⋗昌⬌ᾼㅒⳣ 7.Inspect rigidity of the drill machine Ҷ㕟汧⽴⃫㯮㨿䠓⏪ㆶ 1.Increase feed Ҷ␯⪶㵞懀懁仵捞 2.Check for proper helix angle Poor chip evacuation Ҷ戇㙖㳲䩉奉㝚孡 ⎖ⷠ㔡⎉ᾜ㞢 3.Check for proper chip space Ҷ␯⪶㮌⵻㵣 4.Using step feed Ҷ㔰䚷朢㳖ゞ懁仵 1.Check for suitable guide-bush Ҷℎ䚷懸▗Ὶ昌⫦ Drill won't enter work 2.Reduce feed ⏪⎖⋴㟑ᾜ叾 Ҷ㾪ⶠ⎖⋴㟑Ὶ㵞懀懁仵捞 3.Pre-centering 'HÀHFWLRQRIKROH Ҷ榟⋗昌⬌ᾼㅒⳣ 昌ⳣ≍㜫 Insufficient rigidity of drill Shortening length of drill 昌榼⏪ㆶᾜ叾 侽䥼昌榼朆〵虇⨭␯⏪ㆶ Unsuitable angle Regrinding 昌榼孡〵ᾜ⶜ ⌜䦣䩷 1.Reduce cutting speed Ҷ柜⃝⎖⏙憮〵 ([FHVVLYHZHDU 2.Check lip relief of cutting edge Cutting speed too high⎖⏙憮〵⪹ㅺ Ҷ␯⪶朢栨孡,QFUHDVHFRRODQWÀRZ ⪥孡䩷㖜 Ҷ⋔⎕K仵⎖⏙㽁 4.Check for proper material Ҷ㕟汧昌榼Ὶ㣟幹