JPH0396322U

JPH0396322U -

Info

Publication number: JPH0396322U
Application number: JP387690U
Authority: JP
Priority date: 1990-01-22
Filing date: 1990-01-22
Publication date: 1991-10-02

Description

[Brief explanation of drawings]

第１図及び第２図は本考案の１実施例を説明す
るための模式断面図であり、第３図は本考案のコ
ネクチングロツドの熱間コイニング部位を示す平
面図であり、第４図は従来の焼結鍜造コネクチン
グロツドの熱間コイニング型構造を示す模式断面
図であり、第５図は冷間コイニングされたコネク
チングロツドの冷間コイニング部を示す平面図で
ある。１ａ……上パンチプレート、１ｂ……下パンチ
プレート、２ａ……大端部上パンチ、２ｂ……大
端部下パンチ、３ａ……コラム部上パンチ、３ｂ
……コラム部下パンチ、４ａ……小端部上パンチ
、４ｂ……小端部下パンチ、５……スプリング、
１０……孔（冷却用）、２０……大端部、３０…
…コラム部、４０……小端部、５０……コネクチ
ングロツド。 1 and 2 are schematic cross-sectional views for explaining one embodiment of the present invention, FIG. 3 is a plan view showing the hot coining portion of the connecting rod of the present invention, and FIG. 5 is a schematic sectional view showing a hot coining type structure of a conventional sintered connecting rod, and FIG. 5 is a plan view showing a cold coining portion of a connecting rod that has been cold coined. 1a... Upper punch plate, 1b... Lower punch plate, 2a... Large end upper punch, 2b... Large end lower punch, 3a... Column part upper punch, 3b
...Column lower punch, 4a... Small end upper punch, 4b... Small end lower punch, 5... Spring,
10... Hole (for cooling), 20... Big end, 30...
...Column part, 40...Small end part, 50...Connecting rod.

Claims

[Scope of utility model registration request]

Upper and lower large end punches for hot coining the large end of the sintered connecting rod onto the upper and lower punch plates; Upper and lower column punches for coining the column of the connecting rod; The upper and lower punches of the small end portion for coining are independently arranged, and the upper and lower punches of the column portion are movable in a direction perpendicular to the long axis of the upper and lower punch plates, and the upper and lower punches of the column portion A hot coining type structure of a sintered connecting rod characterized by having a cooling hole filled with a cooling medium.