JPS6329638U

JPS6329638U -

Info

Publication number: JPS6329638U
Application number: JP12317186U
Authority: JP
Priority date: 1986-08-11
Filing date: 1986-08-11
Publication date: 1988-02-26

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例のスプライン成形
金型で左側が成形前、右側が成形時の状態を示す
縦断面図、第２図は、第１図のマンドレルの一部
切欠き正面図、第３図はスプラインが成形された
成形品の縦断面図、第４図は、素材の形状を示す
縦断面図、第５図は従来の成形金型で成形してい
る状態を示す縦断面図、第６図は、第５図で示し
た成形金型でスプライン部が成形された成形品の
縦断面図、第７図は、歯形に導入角が付けられて
いる従来のマンドレルで押出し成形している状態
を示した縦断面図である。なお、第５図ないし第
７図は、左右対称であるため左側のみを図示して
いる。４……素材、７……ダイ、１０……パンチ、１
１……マンドレル、１１ａ……歯形、１２……突
起。 Figure 1 is a vertical cross-sectional view of a spline molding die according to an embodiment of the present invention, with the left side showing the state before molding and the right side showing the state during molding. Figure 2 is a partially cutaway front view of the mandrel shown in Figure 1. Figure 3 is a vertical cross-sectional view of a molded product with spline molding, Figure 4 is a vertical cross-sectional view showing the shape of the material, and Figure 5 is a vertical cross-sectional view showing the state of molding with a conventional molding die. 6 is a longitudinal cross-sectional view of a molded product with a spline part molded using the molding die shown in FIG. FIG. 3 is a vertical cross-sectional view showing a molding state. Note that FIGS. 5 to 7 show only the left side because they are symmetrical. 4...Material, 7...Die, 10...Punch, 1
1...Mandrel, 11a...Tooth shape, 12...Protrusion.

Claims

[Claims for Utility Model Registration] A material comprising a die, a punch that slides on the die, and a mandrel disposed within the die and having a tooth profile on the outer periphery of the tip, and that the punch cuts a material having holes in the axial direction. A spline molding die for forming a spline part on the inner circumferential surface of a hole in the material by pressing against the tooth profile of the mandrel, the spline forming die having a diameter smaller than the hole diameter in the material and extending in the axial direction of the mandrel on the tip end surface of the mandrel. A spline molding die characterized by the formation of protruding protrusions.