Modern Produktionsteknik del1 - Chalmers tekniska högskola

Sammanfattning av Modern Produktionsteknik del 1
Sidan 3 av 36
Av: Andreas Nilsson
Joakim Nilsson
5.7.3.1 Valsfräsning.............................................................................................................................................. 26
5.7.3.2 Planfräsning.............................................................................................................................................. 26
5.7.4 Fräsverktygstyper.......................................................................................................................... 26
5.7.4.1 Fräsar tillverkade av snabbstål.................................................................................................................. 26
5.7.4.2 Fräsar tillverkade av hårdmetall................................................................................................................ 27
5.7.5 Vändskärsgeometri vid fräsverktyg ............................................................................................... 27
5.7.6 Fastställande av skärdata vid fräsning ......................................................................................... 27
5.7.7 Beräkning av medelspåntjocklek vid fräsning............................................................................... 28
Beräkning av effektbehov vid fräsning ........................................................................................................ 28
5.7.9 Vibrationer vid fräsning................................................................................................................ 28
5.7.10 Teknik för användning av fräsning................................................................................................ 29
5.7.11 Fräsmaskiner................................................................................................................................. 29
5.8 HYVLING ................................................................................................................................................. 29
5.9 BORRNING, UPPRYMNING OCH BROTSCHERING........................................................................................ 29
5.9.1 Beräkning av skärkrafter, vridmoment och effektbehov vid borrning........................................... 29
5.10 SLIPNING ............................................................................................................................................ 30
5.10.1 Slipskivan ...................................................................................................................................... 30
5.10.1.1 Slipmedel............................................................................................................................................. 30
5.10.1.2 Kornstorlek.......................................................................................................................................... 30
5.10.1.3 Hårdhetsgraden.................................................................................................................................... 30
5.10.1.4 Strukturen............................................................................................................................................ 30
5.10.1.5 Bindemedel.......................................................................................................................................... 31
5.10.2 Ingreppsförhållande vid slipning .................................................................................................. 31
5.13 SKÄRVÄTSKOR ................................................................................................................................... 31
5.13.1 Kylning och smörjning .................................................................................................................. 31
5.13.2 Definitioner på olika typer av skärvätska ..................................................................................... 31
5.13.2.1 Grov- och finemulsion......................................................................................................................... 31
5.13.2.2 Vattenlösning ...................................................................................................................................... 31
5.13.3 Smörjmedlets kemiska sammansättning ........................................................................................ 32
5.13.3.1 Mineralolja .......................................................................................................................................... 32
5.13.3.2 Antioxidationsmedel ........................................................................................................................... 32
5.13.3.3 Bakteriecider ....................................................................................................................................... 32
5.13.3.4 EP-additiv............................................................................................................................................ 32
5.13.3.5 Korrosionsinhibitorer .......................................................................................................................... 32
5.13.3.6 Emulgatorer – tensider ........................................................................................................................ 32
5.13.4 Olika skäroperationers krav på skärvätskan................................................................................. 32
5.13.4.1 Svarvning ............................................................................................................................................ 33
5.13.4.2 Fräsning............................................................................................................................................... 33
5.13.4.3 Borrning .............................................................................................................................................. 33
5.13.4.4 Slipning ............................................................................................................................................... 33
5.13.5 Skärvätskans inverkan på maskin och arbetsstycken .................................................................... 33
6 ÖVRIGA BEARBETNINGSMETODER................................................................................................ 34
6.2 METODER FÖR BEARBETNING AV SVÅRA GEOMETRIER ELLER MATERIAL................................................ 34
6.2.1 Vätskestråleskärning ..................................................................................................................... 34
6.2.3 Laserbearbetning .......................................................................................................................... 34
6.2.3.1 Laserljusets egenskaper ............................................................................................................................ 34
6.2.3.2 Principen för laser..................................................................................................................................... 34
6.2.3.3 Laserstrålen............................................................................................................................................... 34
6.2.3.4 Bearbetningsoperationer ........................................................................................................................... 34
6.2.6 Gnistbearbetning........................................................................................................................... 35
6.2.6.1 Definitioner............................................................................................................................................... 35
6.2.6.2 Principen för gnistbehandling................................................................................................................... 35
6.2.6.3 Urladdningsförloppet................................................................................................................................ 35
6.2.6.4 Reglerorgan .............................................................................................................................................. 35
6.2.6.5 Generatorer............................................................................................................................................... 35
6.2.6.6 Elektrodmaterial ....................................................................................................................................... 35
6.2.6.7 Spolvätska................................................................................................................................................. 36
6.2.6.8 Användningsområde................................................................................................................................. 36
6.2.6.9 Toleranser................................................................................................................................................. 36
6.2.6.10 Ytjämnhet............................................................................................................................................ 36
6.2.6.11 Datorstyrda bearbetningsoperationer................................................................................................... 36
6.2.6 Trådgnistring................................................................................................................................. 36