CN201916011U

CN201916011U - Valve blank with fin at head

Info

Publication number: CN201916011U
Application number: CN2010206508734U
Authority: CN
Inventors: 江文广; 陈文�; 梁升; 张世文; 夏彩霞
Original assignee: Hunan Tianyan Machinery Co Ltd
Current assignee: Hunan Tianyan Machinery Co Ltd
Priority date: 2010-12-10
Filing date: 2010-12-10
Publication date: 2011-08-03
Anticipated expiration: 2020-12-10

Abstract

The utility model discloses a valve blank with a fin at the head, comprising a valve blank rod (1) and a valve blank head (2) which is connected with the valve blank rod to be as a whole, wherein the edge of the valve blank head (2) is provided with a circle of fin (22) axially extending, and the extension height of the fin (22) is 1-3mm. The valve blank with the fin at the head is convenient for subsequent processing, and can improve the working reliability and the service life of a valve.

Description

Head has the valve blank of overlap

Technical field

The utility model relates to a kind of engine valve blank, and particularly a kind of head has the valve blank of overlap.

Background technique

At present, when making engine valve blank, tend to head at valve blank and form radially overlap 21(as shown in Figure 1), its reason is because adopt by the Mold Making of structure as shown in Figure 2.There is the problem of the following aspects in this valve blank: 1, the radially overlap of the head of valve blank is unfavorable for coiling bar and proofreaies and correct together, and proofread and correct efficient, precision is low; Because the calibration equipment of valve blank normally when proofreading and correct engine valve stem by proofreading and correct the head cylindrical arriving the purpose of proofreading and correct the valve head, and radially the overlap valve blank because the existence meeting effect correction precision of head cylindrical overlap; 2, the radially overlap of the head of valve blank is unfavorable for the manual or automatic loading/unloading of following process operation, because during valve roughing, manually material loading generally is that hand is grabbed valve head cylindrical and carried out clamping again, and radially the overlap blank is owing to have overlap to hinder hand easily on the head cylindrical; It is short that 3, but the radially overlap of the head of valve blank makes valve blank neck centrum tensile elongation when forging and pressing.

Summary of the invention

The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and the valve blank that provides a kind of head that overlap is arranged, and it is convenient to processing, and can make valve more firm, improves valve functional reliability and working life.

The technical solution of the utility model is: a kind of head has the valve blank of overlap, and it comprises valve blank bar and the valve blank head that is connected as a single entity with the valve blank bar, and the edge of valve blank head is provided with the axially extended overlap of a circle.

The further technological scheme of the utility model is: the extended height H of described overlap is one to three millimeter.

The utility model compared with prior art has following characteristics:

1, axially overlap helps coiling bar and proofreaies and correct together, calibration result ideal simultaneously, the precision height, for follow-up machining particularly automatic control line machining a good blank support can be provided;

2, axially overlap has solved the requirement of the manual or automatic material delivery machine of following process operation to blank, because axially overlap is convenient to handgrip, can not hinder hand.

Below in conjunction with the drawings and specific embodiments detailed structure of the present utility model is further described.

Description of drawings

Fig. 1 has the structural representation of the valve blank of overlap for existing head;

Fig. 2 has the making schematic representation of the valve blank of overlap for existing head;

Fig. 3 is that Fig. 2 is along the enlarged diagram in the A line scope;

Fig. 4 is a structural representation of the present utility model;

Fig. 5 is a making schematic representation of the present utility model;

Fig. 6 is that Fig. 5 is along the enlarged diagram in the B line scope.

Embodiment

Embodiment 1

Shown in Fig. 4-6: a kind of head has the valve blank of overlap, it comprises valve blank bar 1 and the valve blank head 2 that is connected as a single entity with the valve blank bar, the edge of valve blank head 2 is provided with the axially extended overlap 22 of a circle, and the extended height H of overlap 22 is one to three millimeter.

This valve blank can come out by Mold Making as shown in Figure 5.

The utility model is not limited to above-mentioned concrete structure, so long as the valve blank that is provided with the axially extended overlap 22 of circle at the edge of valve blank head 2 drops within the protection domain of the present utility model.

Claims

1. a head has the valve blank of overlap, it comprise valve blank bar (1) and with the valve blank head (2) that the valve blank bar is connected as a single entity, it is characterized in that: the edge of valve blank head (2) is provided with a circle axially extended overlap (22).

2. head according to claim 1 has the valve blank of overlap, it is characterized in that: the extended height of described overlap (22) is one to three millimeter.