Samvinna
LIST
FEGURÐ OG VELLÍÐAN
HANDVERK
MENNING OG SAGA
SKEMMTUN
UMHVERFI
MATUR OG DRYKKUR
ÖFUGVERKFRÆÐI
VÍSINDI
ÍÞRÓTTIR
TÆKNI
KLÆÐANLEG TÆKNI
Lathe Cutting Tool: Ground to the Clearance and Slope for Each Metal (Machinery's Handbook, 1924)
A lathe turning tool ground from tool steel bar. Three things decide how well it cuts: the shape of the edge seen from above, the clearance under the edge, and the slope of the top the chip slides over. The Handbook gives the angles for each kind of metal to be turned.
Variable: the metal to be turned. Clearance 8 to 10° for general work, 12 to 14° for brass. Soft steel: back slope 8°, side slope 14 to 20°. Very hard steel: 5° and 9°. Brass: flat on top.
Source: Machinery's Handbook (1924), pp. 887-889, Tool Grinding. Unknown: the steel and the bar size. Picture: the Handbook's figure.
Miðlungs
Unknown
Leiðbeiningar
1
1
Choose the edge shape
Choose the edge shape
Grind the edge, seen from above, to suit the job. A large-radius edge roughs and keeps its edge at higher speed; a smaller point is better on flexible work that would chatter. A parting tool must be widest at the cutting edge so it does not bind in its groove. Ours: square tool steel bar. Not given: the steel, the bar size.
Efni fyrir þetta skref:
Ferstrent verkfærastál1 tool blankNauðsynleg verkfæri:
Brýnsluhjól
Vatn2
2
Grind the clearance and the slope
Grind the clearance and the slope
Grind clearance under the edge: 8 to 10° for general turning, 12 to 14° for brass and soft metals; too much weakens the edge. Slope the top away from the working part of the edge. A roughing tool for medium or soft steel gets a back slope of 8° and a side slope of 14 to 20°; for very hard steel, 5° and 9°. A broad finishing tool slopes straight back. Thread tools and tools for brass or chilled iron are flat on top; very hard metals get almost no slope and little clearance. Roughing tools cut fastest with a lip angle near 61°, but cast iron cuts better at about 68°.
Nauðsynleg verkfæri:
Brýnsluhjól
Gráðubogi3
3
Grind without burning
Grind without burning
Press the tool only moderately against the wheel and draw it away often, especially when grinding a broad flat face, so the edge does not overheat and burn. Keep the wheel supplied with plenty of cooling water.
Nauðsynleg verkfæri:
BrýnsluhjólVatnEfni
1- 1 tool blankStaðgengill
Efni úr tengdum teikningum
Þessi teikning býr til
CC0 opinbert ríki
Þessi teikning er gefin út undir CC0. Þér er frjálst að afrita, breyta, dreifa og nota þetta verk í hvaða tilgangi sem er, án þess að biðja um leyfi.
Studdu smiðinn með því að kaupa vörur í gegnum teikningu hans þar sem hann fær þóknun smiða sem seljendur ákvarða, eða búðu til nýja endurskoðun á þessari teikningu og tengdu hana sem tengingu í þinni eigin teikningu til að deila tekjum.