JPS6011566B2 - Rolling head with obliquely supported roll holders - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rolling head having a roll holder supported obliquely with respect to the axis of a rolled material and on which a circular sushi roll and a roll are mounted in a cantilevered manner. is connected in a relatively non-rotatable manner with a drive bevel gear surrounding it, is disposed axially movably within the drive bevel gear of the parenthesis and is loadable by an axial adjustment member, The roll holding machine part is supported in radial bearings.

The rear end of the roll holder is of the type surrounded by a thrust bearing supported by the directional adjustment member. An oblique rolling mill (German Patent Application No. 1 602 153) with a rolling head of this type driven via a planetary gear transmission can roll solid or hollow circular cross-section rolled material. Without the risk of twisting the material, it can be rolled in one step at a relatively low cost and with a significant reduction in area.

This is because the disk, which is driven to rotate about its own axial image, is caused to revolve around the rolled material in such a way that it sends the rolled material in all directions of its axis but does not rotate the rolled material. It is. However, it is difficult to adjust the rolling heads and rolls (work rolls) of the plurality of rolling heads in the rutting direction.

Not only must all roll holders be adjusted far and uniformly by the desired amount of adjustment, but also the roll holders must be adjusted over a distance significantly greater than the normal amount of adjustment for changing rolls. This is because it is also necessary to move it. According to a known proposal to solve these problems, the roll holder is constructed as a sliding bush with a circular ring guided axially therein and a clamping bolt connected to the roll. , this sliding bushing is movable in a hollow shaft for adjustment movements or roll assembly/disassembly movements, the hollow shaft itself being
It is supported immovably in all directions in the rolling head casing, and holds the drive bevel gear in an immovable manner (
German Patent Application No. 2009867 and German Patent Application No. 274877). Although this known design solves the above-mentioned problems due to the significant difference between the adjustment distance and the travel distance, the cost is that the rolling head is expensive and
Moreover, it is extremely prone to failure. This is due to the fact that a large rolling force and an impact that inevitably arises due to this rolling force and have a component that is partially oblique to the axis of rotation are transmitted to the hollow shaft through the sliding bushing. This is because the stresses which are transmitted to the rolling head casing via its bearings and which act on the hollow shaft in this case have an adverse effect on the meshing of the drive bevel gear which is fixed to the hollow shaft.
The aim of the invention is to make the above-mentioned difference between the adjustment distance and the travel distance possible and to eliminate the disadvantages of the known proposals.

In order to achieve this object, the invention provides an arrangement in which the thrust bearing of the roll holder is constructed as a radial bearing, and the immovable outer ring of the thrust bearing is a coaxial bearing movable in the rolling head casing. It was supported by an adjustment member.

In this case, the radial thrust bearing consists of a circular thrust bearing, a roller thrust bearing, and a radial bearing that are arranged one behind the other in the axial direction, and the radial bearing is inserted in the outer ring of the circular circular thrust bearing in the same D shape. You can do it like this. Advantageously, the cross section of the outer ring of this circular roller thrust bearing is rectangular.

Furthermore, when using a roll holder that has a large-diameter cylindrical section on the roll side and a 4-diameter cylindrical section on the thrust bearing side, the radial bearing and thrust bearing attached to these cylindrical sections a cylindrical section connected to the cylindrical section for the thrust bearing and provided with a spline section for the connection of the drive squirrel gear, and a circular section that subsequently extends into the cylindrical section for the radial bearing. The circular section is surrounded by a circular additional section of the drive bevel gear, and the bearing that supports the drive bevel gear within the casing is located on the thrust bearing side of the drive bevel gear. and La of the additional portion of the drive bevel gear. It is preferable that the large diameter end portion of the dial bearing is located at the large diameter end portion of the dial bearing side. Both bearings supporting the drive bevel gear are placed as close as possible to the radial bearing and thrust bearing of the roll holder, and the diameter of the roll holder between the radial bearing and the conical roll is approximately equal to the maximum diameter of the roll. .
According to the structure of the present invention, all the force transmitted from the conical roll to the roll holder is transferred between the radial bearing provided at the conical roll holding end of the roll holder and the radial bearing provided at the rear end of the roll holder. It is supported directly by the thrust bearing in the center and is transmitted to the rolling head casing.

In this case, the roll holder can be adjusted in the axial direction directly by an axially movable adjusting member located behind the thrust bearing, without using a padded bushing or a flange attachment. , this adjustment distance can cover the travel distance required when changing the roll. The driving bevel gear is
It is virtually unaffected by forces acting on the roll holder. This is because the drive bevel gear is mounted in the housing separately from the roll carrier. In the following, the configuration of the present invention will be specifically explained with reference to embodiments shown in the drawings.

The roll holder is constructed as a hollow shaft 1 in the form of a pestle, and the cylindrical section la of the largest diameter on the conical roll 2 side
A radial bearing 3 is attached to the radial bearing 3.

The roll 2, which has a diameter approximately equal to the diameter of this cylindrical section la, is removably connected to the roll holder 1 by means of a fixing device 4 and is arranged in a cantilevered manner. Cylindrical section la
A circle sushi is followed by a section lb, which is further connected to a cylindrical section lc. A drive bevel gear 5 is arranged around this cylindrical section lc by means of a spline section 6 so that it cannot rotate relative to it. The spline portion 6 allows the roll holder (hollow shaft 1) to move in the vertical direction relative to the drive squirrel gear 5. The round section lb of the roll holder is surrounded by a round-shaped extension 5a of the drive bevel gear 5, which is round at its large diameter end 5c and is connected to the rolling head by means of roller bearings 7. is supported by the casing 8. Another round and roller bearing 9 supports the drive bevel gear 5 in the casing 8. The driving bevel gear 5 is
Umbrella pinion 1 also provided within casing 8
0, and the pinion 11 of the umbrella pinion 10 is in mesh with the intermediate gear 12 of the planetary gear drive (not shown).
is installed. The thrust bearings mounted on the stepped cylindrical sections ld and le of the roll holder 1 have circular and roller thrust bearings, which
The ring is composed of rollers 13, an inner ring 14, and an outer ring 15, and the inner ring 14 has a raceway surface 14a with an inclined head.
The outer ring 15 has a raceway surface perpendicular to the axis of rotation of the hollow shaft 1 and has a rectangular cross section.

A radial bearing 16 is inserted into the outer ring 15 to grip the end of the roll holder. The outer ring 15 is supported by a support ring 17 which has an external thread 17a that is screwed into the casing 8 of the rolling head and which has a gear transmission acting on the teeth on the inner circumference of the support ring 17. This causes the support ring 17 to rotate, thereby moving the roll holder in the direction of the ball. BRIEF DESCRIPTION OF THE DRAWINGS The drawing is a cross-sectional view of one embodiment of the invention.

1...Hollow shaft, la...Cylindrical section, l
b...Yen sushi, classification, lc~le...
Cylindrical classification, 2... Circular sushi, roll, 3...
Radial bearing, 4...Fixing device, 5...
・Drive bevel gear, 5a...Additional part, 5c...
...Large diameter end, 6...Spline part, 7...
...Roller bearing, 8...Casing, 9...Roller bearing, 10...
Car pinion, 11...shaft, 12...
Intermediate gear, 13... Circular sushi, roller, 14...
...Inner ring, 14a... Raceway surface, 15...
Outer ring, 16... Radial bearing, 17...
- Support ring, 17a...external thread.

Claims (1)

[Scope of Claims] 1. A rolling head having a roll holding body supported obliquely with respect to the axis of the rolled material and having a conical roll bonded in a cantilevered manner, the roll holding body having a drive unit surrounding it. The conical roll-holding end of the roll holder is mounted in a radial bearing, the conical roll-holding end of the roll holder bearing in a radial bearing. and the rear end of the roll holder is surrounded by a thrust bearing supported by the axial adjustment member, and the thrust bearing of the roll holder is configured as a radial thrust bearing. The stationary outer ring 1 of the thrust bearing
5 is a rolling head with an obliquely mounted roll holder, characterized in that it is supported by a coaxial adjustment member which is axially movable in the casing 8 of the rolling head. 2. A rolling head according to claim 1, wherein the radial thrust bearing comprises a tapered roller thrust bearing and a radial bearing 16 arranged one behind the other in the axial direction. 3. The second claim in which the radial bearing 16 is inserted concentrically into the outer ring 15 of the tapered roller thrust bearing.
Rolling head as described in section. 4. The rolling head according to claim 3, wherein the outer ring 15 of the tapered roller thrust bearing has a rectangular cross section. 5. The rolling head according to any one of claims 1 to 4, wherein the diameter of the roll holder between the radial bearing 3 and the conical roll 2 is approximately equal to the maximum diameter of the conical roll 2.