CN106624593A - Rolling head - Google Patents

Abstract

The invention relates to a rolling head. The rolling head comprises a guide wheel, a rolling needle bearing, a mandrel, rolling wheels, an end cover and a shell, wherein plane bearings are further installed on the mandrel; and the plane bearings are located at the two sides of the guide wheel and fixed through the shell or the end cover. The rolling head disclosed by the invention is simple and reasonable in structure, low in cost and long in service life. Excessive wear among the guide wheel, the shell and the end cover due to the action of different axial rolling component forces on the two rolling wheels is avoided. Thus the problem of declining of the surface quality of a rolled crankshaft caused by that the iron chips generated due to excessive wear between the rolling wheels and the shell fall into a rolling groove along a gap can be avoided.

Description

A kind of milled head

Technical field

The present invention relates to roll unit, specifically a kind of milled head.

Background technology

It is known that Crankshaft Machining process will use milled head.At present milled head is typically made up of guide wheel, needle bearing, mandrel, roller, end cap and housing.Because the rolling power suffered by two rollers has pressure differential, the component on mandrel direction is caused to balance.Guide wheel is subject to the effect of axial force to produce axial movement, is rubbed with housing, end cap.Iron filings can be produced after excessive wear, iron filings can be dropped on rolling surface by the gap of milled head, the iron filings that these drop directly can cause finished surface defect occur in the presence of rolling power, waste product finally occur.

The content of the invention

The technical problem to be solved is to overcome the deficiencies in the prior art, there is provided a kind of rational in infrastructure, is simple to manufacture, easy to operate, long service life, rolls the high milled head of quality.

The present invention solves the technical scheme of above-mentioned technical problem employing：A kind of milled head, it includes guide wheel, needle bearing, mandrel, roller, end cap and housing, it is characterised in that：Plane bearing is also equipped with the mandrel, the plane bearing is located at guide wheel both sides, is fixed by housing or end cap.

Plane bearing is installed on mandrel of the present invention, it is to avoid because two rollers bear rolling axial thrust load effect of different sizes, cause the excessive wear between guide wheel and housing, end cap.Against existing technologies, present configuration advantages of simple, with low cost, long service life.The iron filings produced due to the excessive wear between roller and housing can be avoided to drop in rolling groove along gap, cause the problem of the crankshaft surface Quality Down after rolling.

Description of the drawings

Below in conjunction with the accompanying drawings the invention will be further described.

Fig. 1 is the structural representation of the present invention.

Fig. 2 is the use state schematic diagram of the present invention.

Label in figure is：1. housing, 2. guide wheel, 3. needle bearing, 4. mandrel, 5. plane bearing, 6. end cap, 7. roller, 8. bent axle.

Specific embodiment

From figure 1 it appears that a kind of milled head, it includes guide wheel 2, needle bearing 3, mandrel 4, roller 7, end cap 6 and housing 1, and mandrel 4 is engaged with housing 2, is sealed by end cap 6.The annexation of above-mentioned composition structure and each part is identical with prior art, repeats no more.

It is characteristic of the invention that：Plane bearing 5 is also equipped with the mandrel 4, the plane bearing 5 is arranged between guide wheel 2, end cap 6 and housing 1.Specifically plane bearing 5 is located at the both sides of guide wheel 2, and left side is fixed between guide wheel 2 and housing 1, and right side is being fixed between guide wheel 2 and end cap 6.So increased plane axis between housing 1, end cap 6 and guide wheel 2,5, as the transition between guide wheel and housing, end cap.

When the present invention is used, when roller 7 contacts participation rolling with the rolling groove of bent axle 8, as shown in Figure 2.Guide wheel 2 is affected to produce left and right displacement by axial thrust load in the presence of rolling power.Due to the effect of plane bearing 5, it is to avoid guide wheel 2 directly contacts with housing 1, end cap 6 and to cause abrasion.And then the iron filings produced due to excessive wear can be avoided to drop in rolling groove along gap, the problem for causing the surface quality after rolling to decline.Therefore the milled head had not only had higher service life but also had been avoided that the problem of the rolling Quality Down brought because of the excessive wear between roller and housing.The risk that waste product is caused because of the generation of the iron filings that wear and tear is avoided from root.

Present configuration advantages of simple, with low cost, long service life.The iron filings produced due to the excessive wear between roller and housing can be avoided to drop in rolling groove along gap, cause the problem of the crankshaft surface Quality Down after rolling.

Claims (1)

1. a kind of milled head, it includes guide wheel, needle bearing, mandrel, roller, end cap and housing, it is characterised in that：Plane bearing is also equipped with the mandrel, the plane bearing is located at guide wheel both sides, is fixed by housing or end cap.