KR960003863A

KR960003863A - Vehicle sintered tappet and its manufacturing method

Info

Publication number: KR960003863A
Application number: KR1019940017182A
Authority: KR
Inventors: 고정; 윤용구; 오창선
Original assignee: 석진철; 대우중공업 주식회사
Priority date: 1994-07-16
Filing date: 1994-07-16
Publication date: 1996-02-23

Abstract

본 발명은 가솔린엔진 또는 디젤엔진에 사용되어 캠 축의 회전운동을 밸브의 왕복운동으로 변환시켜 밸브개폐시기를 결정하는 역할을 하는 소결 태핏과 그 제조방법에 관한 것이다.The present invention relates to a sintered tappet used in a gasoline engine or a diesel engine to convert the rotational motion of the cam shaft into a reciprocating motion of the valve to determine the valve opening and closing time and a manufacturing method thereof.

종래에는 팁부의 접합면과 보디부의 접합면이 양쪽 모두 홈이 없는 평탄면으로 가공되어 있는 소결공정중에 발생한 가스에 의하여 팁부의 일부분이 부풀어 오르거나 보디와 팁의 접합이 불량하게 되는 결과를 초래하는 경우가 많았다. 이에 본 발명을 소결공정중 접합면에서 발생되는 가스를 가스방출용 홈에 의해 외부로 방출되게 하여 부풀옴현상이 제거되고 양호한 접합을 이룰 수 있게 되어 내구성과 성능이 우수한 소결 태핏을 얻을 수 있게 한 것이다.Conventionally, a portion of the tip portion swells due to the gas generated during the sintering process in which both the joining surface of the tip portion and the joining surface of the body portion are processed into flat surfaces without grooves, or the joining of the body and the tip becomes poor. There were many cases. Accordingly, the present invention allows the gas generated at the joint surface during the sintering process to be discharged to the outside by the gas discharge groove to remove the swelling phenomenon and achieve a good bonding, thereby obtaining a sintered tappet having excellent durability and performance. will be.

Description

Vehicle sintered tappet and its manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래의 소결 태핏의 구조를 도시한 것이고,1 shows the structure of a conventional sintered tappet,

제2도는 본 발명의 제1실시예를 도시한 것이며,2 shows a first embodiment of the present invention,

제3도 내지 제4도는 각각 본 발명의 다른 실시예를 도시한 것이다.3 to 4 respectively show another embodiment of the present invention.

Claims

A sintered tappet in which a body portion and a tip portion are joined, wherein at least one gas discharge groove is formed in at least one joining surface of the body portion and the tip portion so as to communicate with the outside.

In a method of manufacturing by separately sintering and joining a body portion and a tip portion, a concave groove is formed in at least one of the joining surfaces of the body portion and the tip portion, and the body portion and the tip portion are assembled and sintered to be produced during sintering. Method for producing a sintered tappet for a vehicle, characterized in that the gas can be released to the outside of the tappet.

The method of manufacturing a sintered tappet for a vehicle according to claim 2, wherein the concave groove is at least one linear or curved groove extending across the joining surface to the circumferential surface of the joining surface.

The method of manufacturing a sintered tappet for a vehicle according to claim 2, wherein the concave groove is formed in a spiral shape starting from the inside of the joining surface and extending to the circumferential surface.

※ Note: The disclosure is based on the initial application.