812 試料内径の拡張押出しによる歯車成形(GS1-(2) 通常セッション,オーガナイズドセッション)

概要

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The shaping of the spur gear by expanding the inner diameter was studied. That is the workpiece is set its inner diameter to the front part of the stepped mandrel, which is placed the expansion of its inner diameter, by passing through the rear part of the mandrel. The specification of the gear is as follows: module m=1.0mm, number of teeth z=26, pressure angle α=20°, whole depth h=2.25mm, addendum modification x=0.25. Criterion for the shaping of complete teeth is discussed in terms of reduction in area and expanding of the inner diameter of workpiece. It is shown that the reduction in area for shaping the complete teethed gears 8%. The required pressure of punch annd stepped mandrel for shaping is far below the strength of the punch and mandrel materials.
2009-08-25