Method for obtaining a complete threading profile by milling and milling tool
AssigneeDc Swiss S.A.
InventorBeat Kaufmann
Life of this patent
Estimating the term…
Abstract
A method for milling a threading of a screw or tapped hole. The threading has a cross section in the shape of a triangle with a truncated crest. The method includes milling a first flank (V1) of at least one spire of the thread by a first comb (A) of a milling tool (F). The teeth of the first comb (A) are spaced in relation to one another by a first pitch (P1). Then milling a second flank (V2) of at least one other spire of the thread by a second comb (B) of the milling tool (F), wherein the teeth of the second comb (B) are spaced in relation to one another by a second pitch (P2) equal to the first pitch (P1) and offset from the teeth of the first comb (A) by a phase displacement (DP). Then milling a truncated portion (V3) of the crest by a third comb (C) of the milling tool (F).
Claims6
Milling tool for milling a threading and/or tapping, wherein said threading and/or tapping has a cross section in the shape of a triangle with a truncated crest, the milling tool comprising:
- a first comb having a first series of teeth for milling a first flank of at least one spire of said threading and/or tapping, wherein the teeth of said first comb are spaced in relation to one another by a first pitch,
- a second comb having a second series of teeth for milling a second flank of said at least one spire of said threading and/or tapping, wherein the teeth of the second comb are spaced in relation to one another by a second pitch equal to the first pitch and offset by a phase displacement from said teeth of the first comb, and
- a third comb comprising at least one cutting edge for only truncating a crest of a top of the at least one spire of said threading and/or tapping.
Dependencies are inferred from the claim text.