CN205290274U - Mified head - Google Patents

Abstract

The utility model relates to a mified head, it includes guide pulley, bearing, dabber, gyro wheel, end cover and casing, flat housing is still installed to the spindle, flat housing is located the guide pulley both sides, and is fixed through casing or end cover. The utility model has the advantages of simple and reasonable structure, low cost, long service life. Avoid bearing the roll extrusion axial component effect of variation in size because of two gyro wheels, caused the excessive wear between guide pulley and casing, end cover. And then can avoid because during excessive wear between gyro wheel and casing and the iron fillings that produce drop the roll extrusion groove along the gap, cause the problem that the bent axle surface quality after the roll extrusion descends.

Description

A kind of milled head

Technical field

This utility model relates to roll unit, specifically a kind of milled head.

Background technology

It is known that Crankshaft Machining process to use milled head. Current milled head is generally made up of guide wheel, needle bearing, mandrel, roller, end cap and housing. Rolling power suffered by two rollers has pressure differential, causes the component along mandrel direction to balance. Guide wheel is subject to the effect of axial force to be produced to move axially, and rubs with housing, end cap. Producing iron filings after excessive wear, iron filings can drop on rolling surface by the gap of milled head, and the iron filings that these drop directly can cause that defect occurs in finished surface under the effect of rolling power, waste product finally occurs.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, it is provided that a kind of rational in infrastructure, manufactures simple, easy to operate, long service life, the milled head that rolling quality is high.

The technical scheme in the invention for solving the above technical problem is: a kind of milled head, it includes guide wheel, needle bearing, mandrel, roller, end cap and housing, mandrel matches with housing, pass through end cap seal, it is characterized in that: described mandrel is also equipped with two plane bearings, described plane bearing is positioned at guide wheel both sides, and left side is fixed between guide wheel and housing, and right side is being fixed between guide wheel and end cap.

This utility model mandrel is provided with plane bearing, it is to avoid because two rollers bear the rolling axial thrust load effect varied in size, cause the excessive wear between guide wheel and housing, end cap. Against existing technologies, this utility model is simple and reasonable, 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, the problem causing the crankshaft surface Quality Down after rolling.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model will be further described.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is use view of the present utility model.

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.

Detailed description of the invention

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 matches with housing 1, is sealed by end cap 6.The annexation of above-mentioned composition structure and each parts is identical with prior art, repeats no more.

Feature of the present utility model is: being also equipped with plane bearing 5 on described mandrel 4, described plane bearing 5 is arranged between guide wheel 2, end cap 6 and housing 1. Specifically plane bearing 5 is positioned at guide wheel 2 both sides, 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 between housing 1, end cap 6 and guide wheel 2, add plane bearing 5, as the transition between guide wheel and housing, end cap.

When this utility model uses, when the rolling groove of roller 7 with bent axle 8 contacts participation rolling, as shown in Figure 2. Effect lower tumbler 2 in rolling power is subject to the impact of axial thrust load and produces left and right displacement. Effect due to plane bearing 5, it is to avoid guide wheel 2 directly contacts cause abrasion with housing 1, end cap 6. And then the iron filings produced due to excessive wear can be avoided to drop in rolling groove along gap, cause the problem that the surface quality after rolling declines. Therefore this milled head not only has higher service life but also be avoided that the problem rolling Quality Down because the excessive wear between roller and housing brings. The risk causing waste product because of the generation of the iron filings that wear and tear is avoided root.

This utility model is simple and reasonable, 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, the problem causing the crankshaft surface Quality Down after rolling.

Claims (1)

1. a milled head, it includes guide wheel, needle bearing, mandrel, roller, end cap and housing, mandrel matches with housing, pass through end cap seal, it is characterized in that: described mandrel is also equipped with two plane bearings, described plane bearing is positioned at guide wheel both sides, and left side is fixed between guide wheel and housing, and right side is being fixed between guide wheel and end cap.