JPS6182931U

JPS6182931U -

Info

Publication number: JPS6182931U
Application number: JP16793184U
Authority: JP
Priority date: 1984-11-07
Filing date: 1984-11-07
Publication date: 1986-06-02

Description

[Brief explanation of drawings]

第１図は本考案の一実施例２０を示す図であつ
て、その縦断面図イと、イのＣ_１−Ｃ_２線断面図
ロとを示す図、第２図は従来の粉末成形金型１０
の縦断面図、第３図は第２図の金型１０により成
形した圧粉成形体１７を焼結した焼結部品１７−
１のバランシング調整状態を示す縦断面図イと、
イの矢印Ｂ方向からみた平面図ロとを示す図であ
る。２０…本考案の実施例、１１…ダイス、１１ａ
…円形状の貫通穴（断面形状が回転体焼結部品の
外周形状と同じに形成される）、１１ｂ…貫通穴
、１１ａの内面、１２…上パンチ、１２ａ…上パ
ンチ１２の下面、１３…下パンチ、１３ａ…下パ
ンチ１３の上面、１４…コア（心棒）、１５…粉
末成形室、２１…本考案に係わるバランス調整ピ
ン、２２…本考案に係わる圧粉成形体、Ｈ…調整
ピン２１の突出量。 FIG. 1 is a diagram showing an embodiment 20 of the present invention, showing a longitudinal cross-sectional view A and a cross-sectional view B taken along the line _C1 - _C2 of A, and FIG. Type 10
FIG. 3 is a vertical cross-sectional view of the sintered part 17-, which is obtained by sintering the powder compact 17 formed by the mold 10 of FIG.
A vertical cross-sectional view A showing the balancing adjustment state of No. 1;
It is a figure which shows the top view B seen from the arrow B direction of A. 20...Example of the present invention, 11...Dice, 11a
...Circular through hole (formed with the same cross-sectional shape as the outer peripheral shape of the rotor sintered part), 11b...Through hole, inner surface of 11a, 12...Upper punch, 12a...Lower surface of upper punch 12, 13... Lower punch, 13a...Top surface of lower punch 13, 14...Core (mandrel), 15...Powder molding chamber, 21...Balance adjustment pin according to the present invention, 22...Powder compact according to the present invention, H...Adjustment pin 21 protrusion amount.

Claims

[Scope of utility model registration request]

A die having a through-hole for forming with a circular cross-section formed vertically, an upper punch that can be slidably fitted into the through-hole from above, and a lower punch that can be slidably fitted into the through-hole from below. In the powder molding mold, the powder forming mold is provided with a powder forming chamber formed by an inner surface of the through hole, a lower surface of the upper punch, and an upper surface of the lower punch, the At least three balance adjustment pins that protrude into the powder molding chamber and whose protrusion amount can be adjusted are provided, and the punch is placed inside a polygon formed by connecting the centers of the pins along the circumferential direction. A powder molding mold for a sintered part, characterized in that each of the pins is arranged so that the center of the pin is located at the center of the mold.