CN203297324U

CN203297324U - Pre-formed piece of engine connecting rod

Info

Publication number: CN203297324U
Application number: CN2013203237537U
Authority: CN
Inventors: 石勇; 刘振华; 朱光荣
Original assignee: SHANDONG LAIWU JINHUACHEN POWDER METALLURGY PRODUCTS CO Ltd
Current assignee: SHANDONG LAIWU JINHUACHEN POWDER METALLURGY PRODUCTS CO Ltd
Priority date: 2013-06-06
Filing date: 2013-06-06
Publication date: 2013-11-20
Anticipated expiration: 2023-06-06

Abstract

The utility model discloses a pre-formed piece of an engine connecting rod. A V-shaped groove body is arranged in the pre-formed piece of the engine connecting rod, and the groove is pressurized to form a surface of fracture, so that the pre-formed piece is convenient to machine with fewer machining links. When the pre-formed piece is re-machined, the machining procedures can be effectively reduced. Two surfaces after machining are easy to match, so that the purpose of saving, time, labor and resource is achieved.

Description

The engine link preformed member

Technical field

The utility model relates to a kind of engine link preformed member.

Background technique

It is reported that the auto output of China in 2010 is about 1,400 ten thousand, traditional common forging and stamping and the machining process processing of the general employing of the engine link of domestic automobile, for improving engine performance, some automobile production producer adopts the sinter soging connecting rod from external import, substitutes existing product.

Therefore, the engine link of domestic produced in conventional processes has been difficult to meet high quality in the industrial production such as current automobile, highi degree of accuracy, high efficiency, low consumption, requirement that cost is low.

In last century, Germany and the U.S. forge and to begin one's study iron powder, succeed in developing a kind of novel metal forming technique powder metal forging, are swaged into first the parts such as connecting rod, have now in connecting rod two ends are arranged, and tradesman generally a end that termination is larger is called stub end.

The powder metal forging technology be conventional powder metallurgical technique and precision forging organically combine and of growing up have much the market competitiveness less, without the cutting metal processing method; take metallic dust as raw material; through the preformation compacting; carry out heat-agglomerating and as main blank in shielding gas atmosphere; then forging molding and realizing without the burr precision die forging once on press machine, form and common forge piece equal densities, complex-shaped net-size forging.The advantage of existing powder metallurgy formation better performances, can bring into play again forging and this case and effectively change the characteristics of metal material tissue and performance effect, makes powder metallurgy and Forging Technology obtain new dashing forward on producing.

The engine link forged piece preformed piece of making at present, not being provided with " V " type breach in connnecting rod big end end inner circle, is to wait instrument to cut connnecting rod big end end use saw when making engine link, the face after reprocessing is cut, after this processing, face is too smooth, easily dislocation, when in use, two faces are not easy to coincide, this engine link forged piece preformed piece in processing again, time-consuming also effort, and moulding is bad.

Summary of the invention

The utility model is for above problem, a kind of engine link preformed member is provided, this engine link preformed member is provided with the V-shaped groove body in blank,, by the formation fracture surface of exerting pressure in groove, be convenient to processing, has processing link few,,, through again adding man-hour, can effectively reduce manufacturing procedure, process latter two face and easily coincide, the purpose that reach time saving and energy saving, economizes on resources.

For achieving the above object, the utility model adopts following technological means:

A kind of engine link preformed member, comprise con-rod only, body one end of connecting rod is round-meshed stub end, described circular hole inboard is provided with two cell bodies, the V-shaped structure of described cell body, two cell bodies are symmetrical about center of circular hole, and described each V-shaped groove is outwards most advanced and sophisticated, and the middle symmetrical line of V-shaped groove and radially overlapping of circular hole.

Further, the angle of described V-shaped groove body is 60 °.

Further, the width of described V-shaped groove opening is 2mm-3mm.

Further, described V-shaped groove top is provided with chamfering.

Further, the R of described chamfering is 0.15-0.5mm.

Further, the angle of described V-shaped groove body is 50 °-60 °.

Working principle of the present utility model and working procedure are as follows:

Adopt technique scheme, be the design of " V " type breach in the stub end inner circle, offer two v-notch in the inner symmetry of engine powder metallurgy connecting rod preform stub end, be used for follow-up fracture processing, connnecting rod big end end after decomposition, the fracture morphology uniformity, extraordinary polarization is arranged when assembling, need not any machining except set screw, can effectively reduce manufacturing procedure, save the process equipment investment, improve stock utilization, reach time saving and energy saving, economize on resources, the purpose that significantly reduces costs.

Description of drawings

In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, the accompanying drawing that the following describes is only some embodiments that put down in writing in the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing;

Fig. 1 is the utility model structural representation;

Fig. 2 is the local enlarged diagram of Fig. 1.

Embodiment

The following correlation technique content of not addressing all can adopt or use for reference prior art.

In order to make those skilled in the art person understand better technological scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technological scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skills are not making under the creative work prerequisite the every other embodiment who obtains, and all should belong to the scope of the application's protection.

As shown in Figure 1, a kind of engine link preformed member, comprise con-rod only 1, con-rod only 1 one ends are round-meshed stub end, described circular hole inboard is provided with two cell bodies 2, the V-shaped structure of described cell body 2, and two cell bodies are symmetrical about center of circular hole, described each V-shaped groove is outwards most advanced and sophisticated, and the middle symmetrical line of V-shaped groove and radially overlapping of circular hole.

For reaching the purpose of optimization, as shown in Figure 2, V-shaped groove body angle is 60 ° to the enlarged view of this V-shaped groove body; The width of V-shaped groove opening is 2mm-3mm; Described V-shaped groove top is provided with chamfering, and R is 0.15-0.5mm.

The utility model when being processed into engine powder metallurgy connecting rod finished product, directly adopts the Hydraulic Expansion bigger device to inject the stub end inner circle, and stub end is swollen disconnected from " V " type indentation, there, also can adopt external force to break from " V " type breach.

The above is only the application's preferred implementation, makes those skilled in the art can understand or realize the application.Multiple modification to these embodiments will be apparent to one skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the application's spirit or scope, realization in other embodiments.Therefore, the application will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. engine link preformed member, comprise con-rod only, body one end of connecting rod is round-meshed stub end, it is characterized in that: described circular hole inboard is provided with two cell bodies, the V-shaped structure of described cell body, two cell bodies are symmetrical about center of circular hole, and described each V-shaped groove is outwards most advanced and sophisticated, and the middle symmetrical line of V-shaped groove and radially overlapping of circular hole.

2. engine link preformed member according to claim 1, it is characterized in that: the angle of described V-shaped groove body is 60 °.

3. engine link preformed member according to claim 1, it is characterized in that: the width of described V-shaped groove opening is 2mm-3mm.

4. engine link preformed member according to claim 1, it is characterized in that: described V-shaped groove top is provided with chamfering.

5. engine link preformed member according to claim 4, it is characterized in that: the R of described chamfering is 0.15-0.5mm.

6. engine link preformed member according to claim 1, it is characterized in that: the angle of described V-shaped groove body is 50 °-60 °.