JPS5853456Y2 - Drive assembly roll - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a rolling roll or other roll that has a roll body and a roll drive part at an axial end, and the roll drive part is manufactured separately from the roll body and is attached afterwards. The present invention relates to an improved assembly structure that eliminates eccentricity accidents between the roll drive unit and the roll body and makes it extremely easy to drill a hole in the center for processing.

As is well known, in rolling rolls, etc., at one end in the axial direction,
An assembly structure is adopted in which the roll body and the separately manufactured roll drive part are attached afterward by shrink fitting, key fitting, etc. After the roll drive part is integrated into the roll body side,
When finishing the roll body by cutting or other machining, it is necessary to provide a center hole for the center hole on the roll drive side, and at the other end of the roll body in the axial direction, on the roll non-drive side. By providing one hole in the center corresponding to each other, the rolls can be properly held on the six presses and processed.

In this case, on the non-drive side of the roll body, since the center hole is directly drilled in the end of the roll body, there is little risk that the center hole will be eccentric to the roll body, neck, etc., and its accuracy is good.

On the other hand, in the assembled roll drive section, a center hole is drilled in the drive section before assembly. ．． Since this is added to the roll body by shrink fitting or other mechanical coupling means, the eccentricity between the center hole and the center of the roll body tends to become large, and both centers are easily attached to each other. This causes problems such as mismatched holes.

Alternatively, after attaching the roll drive part to the roll body, drilling a hole in the center of the drive part is possible because of the bifurcated shape of the roll drive part. Therefore, there is a problem of poor accuracy.

In any case, the method of providing a center hole for machining in the roll drive part is to avoid the risk of eccentricity, whether before or after assembly.
It can be said that improvement is required in terms of the difficulty of drilling work and poor accuracy.

The present invention is applicable to various rolls of the drive unit assembly type in which the roll drive unit is assembled to the roll body, and the center hole can be obtained very easily and accurately, and there is no problem in assembling the roll drive unit. It is characterized by the fact that the main body and a separately manufactured roll drive section are integrated with the axial end of the roll main body by means of a coupling means. A center hole is provided in advance, and a through hole is provided in the roll drive unit so that the center hole can be used externally.

The present invention will be described in detail with reference to the embodiments shown below. FIG. 1 shows a structure in which a hole is drilled in the center of the rolls assembled in a conventional roll drive unit, and is shown in FIG. A roll main body is formed by the roll neck parts 2, 2 that are formed, and the roll neck shrink fit shaft parts 6, 6 that are formed in a protruding manner at each end of the roll neck parts 2, 2. The roll main body and the l
! The two-pronged roll driving section 3 manufactured by the manufacturing method 3 is assembled into one body by shrink-fitting with the shrink-fitting portion 5 or by mechanical coupling means such as key coupling.

At this time, after assembling the roll drive unit 3, when finishing the roll body by cutting or other machining, the roll body, including the roll drive unit 3, is supported at both ends on a center support, etc., as shown in the figure. It is necessary to provide one center hole 4, 4 in the drive part 3 on the roll drive part 3 side, and in the end face of the shrink-fit shaft part 6 integral with the roll neck part 6 on the non-drive side.

As mentioned earlier, on the non-drive side, there is no eccentricity in the pan body 1 or the neck 2g, where the center hole 4 is drilled in the shrink-fit shaft 6, which is coaxial with the roll body, and the accuracy is good. can be obtained.

On the other hand, in the roll drive unit 3, since the center hole 4 is formed in advance at the appropriate position of the drive unit 3 before assembly to the main body, eccentricity problems with the roll main body side are likely to occur, and furthermore, the drive unit 3 Drilling the center hole 4 at the position shown in the □ drive unit 3 after assembling the drive unit 3 is difficult, and the accuracy tends to decrease, so there remain problems that need to be improved.

In order to solve these problems, the present invention proposes an assembly structure and a center hole drilling structure as shown in the embodiment shown in Fig. 2. In the example,
As shown in the figure, a small protrusion 9 is formed on the end surface of the roll neck shrink fit shaft part 6 at the tip of the roll neck part 2, and a small protrusion 9 is formed concentrically with the roll center, and a center hole is formed at the center position of the small protrusion 9. 4 is drilled correctly in advance, and the roll drive part 3 is assembled to this shrink fit shaft part 6 via the shrink fit part 5 by shrink fit in the same way as in the past, and this roll drive part 3 has a small protrusion 975 drilled at the center position 4.
A through hole 8 with an inner diameter that can be loosely inserted and approximately the same length as the small protrusion 9 is pre-drilled, so a center hole is inserted into the through hole 8 at the same time as shrink fitting. A small protrusion 9 having a number 4 is located therein.

According to this, the holding of the tail to the center hole 4 is performed by the through hole 8.
This can be done easily from the end, and in combination with the center hole 4 shown in Fig. 1 on the non-drive side, both center holes 4゜4 are formed in advance on both ends of the roll body itself, so there is no eccentricity or mismatch. Therefore, it is possible to easily obtain center holes 4, 4 that are always accurately aligned, and the drawbacks of the conventional method are eliminated.

In the embodiment shown in FIG. 3, the roll drive section 3 is integrally assembled with the shrink-fit shaft section 6 by a key connection structure using a key 7, and the through hole 8 in the roll drive section 3 is assembled integrally with the shrink-fit shaft section 6. As shown in the figure, the stepped through hole 8 has a large and small inner diameter, and the small protrusion 9 forming the center hole 4 is freely inserted into the large diameter hole, and the center of the small protrusion 9 is inserted by the small diameter hole end. Hole 4
In the embodiment shown in FIG.
are integrally connected by the key 7 and the shrink fit structure by the shrink fit part 5, and the length of the small protrusion 9 is adjusted such that the center hole 4 at the tip thereof protrudes forward from the through hole 8. In addition, in the embodiment shown in FIG. 5, the support part 9 in the shrink-fit shaft part 6 of FIGS. This figure shows one in which a center hole 4 is drilled and exposed at the rear end of a through hole 8, and it goes without saying that other modified embodiments of the present invention are possible.

According to the roll of the present invention, compared to the conventional technology illustrated in FIG. 1, it is possible to exhibit superior features in the following points.

That is, in the present invention, the center hole 4 is not provided in the roll drive section 3, but the center hole 4 is provided in advance at the drive side end of the roll body, and the through hole 8 is inserted through the center hole 4 into the drive section 3. By adopting a structure that can be used for tail stocking or other purposes from the outside, the processing of the center hole 4 is extremely easy and can be done with great precision. By making it much larger, even if the through hole 8 and the center hole 4 are eccentric or misaligned, there will be no problem in correctly centering and centering the roll body, and the drive unit 3 can be The center hole 4 can be easily used from the side, and the processing cost can also be reduced.There is no difficulty in assembling the roll drive section 3, and there is no need to make any changes, and the shrink-fit shaft section 6 can be easily used. It can be mounted accurately on the side as before, and the difficulty of drilling a hole in the center of the conventional roll drive unit can be solved.

It should be noted that it is possible to apply the roll drive unit assembly structure of the present invention to both ends of the roll body.

[Brief Description of the Drawings] Fig. 1 is an illustrative sectional view of a conventional roll drive unit assembly and center hole drilling structure, and Figs. 2 to 5 are side sectional views of each main part of the embodiment of the present invention. It is. 1...Roll body, 2...Roll neck, 3...Roll drive unit, 4...Center hole, 5...・Shrink fit part, 6...Roll neck shrink fit shaft part, 7...Key, 8...
...Penetration JL 9...Small protrusion.

Claims (1)

[Scope of utility model registration request] ・In one in which the main body and the roll drive unit manufactured by Man-8 are integrated at the axial end of the main body by a coupling means,
A drive unit assembly roll, characterized in that a center hole is provided in advance at an axial end of the roll body, and a through hole is provided in the roll drive unit to position the center hole so that it can be used from the outside.