JP2585351Y2 - Rolling roll - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling roll capable of easily and quickly mounting a rolling ring on a shaft and improving safety in use.

[0002]

2. Description of the Related Art FIGS. 6 to 8 show a conventional rolling roll. In these figures, reference numeral 2 denotes a shaft, on the outer periphery of which a rolling ring 4 is mounted with both sides being pressed by spacers 6 and 8, respectively. The rolling ring 4 is made of a cemented carbide or the like, and its outer peripheral portion 4a has a predetermined cross-sectional shape according to the rolling process. It is tapered or straight increasing. The spacer 6 has a substantially ring shape, at least one end 6a of which is flat, and the other end 6b abuts the end 4b of the rolling ring 4 without any gap. A key groove 6c is formed at the center of the spacer 6, and the key groove 6c is fitted to the key 10 fitted on the outer peripheral portion of the shaft 2, so that the spacer 6 rotates around the axis of the shaft 2. Has been blocked. The spacer 8 has substantially the same shape and mechanism as the spacer 6.

At one end of the rolling ring 4, a leaf spring (corresponding to urging means) 16 is provided between the flange portion 14 formed on the shaft 2 and the spacer 6, and at the other end of the rolling ring 4. Is provided with a hydraulic nut (corresponding to a pressing means) 18 outside the spacer 8. The hydraulic nut 18 is screwed into a screw portion 2a formed on the outer peripheral portion of the shaft 2, and is fixed to the shaft 2 by reducing the inner diameter portion by a hydraulic mechanism (not shown) provided therein. Have been. A ring-shaped piston ring 20 is provided on an inner peripheral portion on one end side of the hydraulic nut 18 so as to be able to advance and retreat in the axial direction, and a hydraulic mechanism 22 provided inside the hydraulic nut 18 is provided.
Accordingly, the piston ring 20 can be pressed toward the rolling ring 4. O-rings 24 and 26 for sealing are provided on the inner and outer peripheral portions of the piston ring 20.

In the above-mentioned conventional rolling roll,
When the rolling ring 4 is fixed to the shaft 2, first, each member is arranged in the state shown in FIG. In the state of FIG. 6, the hydraulic mechanism 22 does not apply pressure to the piston ring 20, and the distance between the end 8b of the spacer 8 and the one end 18a of the hydraulic nut 18 (hereinafter referred to as "gap distance")
That. ) Is L1.

Next, the hydraulic mechanism 22 is driven to apply pressure to the piston ring 20, and the spacer 8 is pushed out by the piston ring 20 toward the rolling ring 4. As a result, the rolling ring 4 and the spacers 6 and 8 move toward the flange portion 14 against the urging force of the leaf spring 14, and the gap distance becomes L2 (however,
L2> L1) (FIG. 7). Next, in this state, the fixing member 32 including the two split rings 28 and 30 shown in FIG. 9 is attached and fixed to the outer peripheral portion of the piston ring 20. Bolt holes 28a, 30a penetrating in the radial direction are formed in the split rings 28, 30, respectively. The tips of the bolts inserted into the bolt holes 28a, 30a are formed on the outer peripheral portion of the piston ring 20. The split rings 28 and 30 are fixed to the outer peripheral portion of the piston ring 20 by screwing into the screw holes.

Thereafter, when the pressure state of the hydraulic mechanism 22 is released, the fixing member 32 is nipped between the end 8b of the spacer 8 and one end 18a of the hydraulic nut 18 by the urging force of the leaf spring 16, At the same time, the rolling ring 4 and the spacers 6 and 8 are also pressed between the leaf spring 16 and the hydraulic nut 18. As a result, the rolling ring 4 is pressed from both sides by the spacers 6 and 8, and is completely fixed on the shaft 2 (FIG. 8). The thickness t1 of the split rings 28, 30 is set to be larger than the gap distance L1 and smaller than the gap distance L2.

[0007] A pair of the above-mentioned rolling rolls are provided in parallel,
The material is rolled into a predetermined cross-sectional shape by the cooperation of the pair of rolling rolls.

[0008]

In the above-mentioned conventional rolling roll, the bolts for fixing the split rings 28 and 30 and the piston ring 20 are cut by bending of the roll at the time of rolling. The split rings 28 and 30 sometimes jumped out. In addition, since it takes time to mount the split ring, there is a demand for further shortening the split ring, and further, it has been desired to further reduce the processing cost of the split ring. In order to solve such a problem, a method of increasing the number of bolts provided on each split ring or integrating two split rings with bolts has been tried.
Neither could be a satisfactory solution, and new methods were sought.

The present invention has been made in view of the above-mentioned circumstances, and provides a rolling roll capable of easily and quickly mounting a rolling ring on a shaft and improving safety during use. The purpose is to:

[0010]

Means for Solving the Problems The invention according to claim 1 is:
A rolling ring is mounted on the outer periphery of the shaft with both sides thereof being sandwiched by spacers, and at a predetermined position near one end of the rolling ring on the shaft, the rolling ring is directed toward the other end. An urging means for urging is provided, and is fixed on the shaft at a predetermined position near the other end of the rolling ring on the shaft and can press a part of the inner peripheral side toward the one end. A pressing means is provided, between the rolling ring and the pressing means, in a rolling roll in which a fixing member is mounted along the circumferential direction of the shaft, the fixing member, one end or both ends, The spacer or the pressing means, which is formed of an integral ring-shaped member having an uneven portion formed in the circumferential direction and abuts the uneven portion of the fixing ring, has an uneven portion that fits into the uneven portion. And it is characterized in that it is.

According to a second aspect of the present invention, a rolling ring is mounted on an outer peripheral portion of a shaft with both sides thereof being sandwiched by spacers, and is provided at a predetermined position near one end of the rolling ring on the shaft. An urging means for urging the rolling ring toward the other end is provided, and is fixed on the shaft at a predetermined position near the other end of the rolling ring on the shaft, and is provided on the inner peripheral side. Pressing means capable of pressing a part toward the one end side is provided, between the rolling ring and the pressing means, a rolling roll in which a fixing member is attached along the circumferential direction of the shaft,
The fixing member has an integrated first ring-shaped member having an uneven portion formed in a circumferential direction on one end side, and an uneven portion fitted to the uneven portion of the first ring-shaped member is formed on one end side. It is characterized by comprising an integral second ring-shaped member.

[0012]

In the rolling roll according to the above configuration, before the rolling ring is fixed to the shaft, the concavo-convex portions facing each other are fitted together, and the rolling ring is pressed by the pressing means toward the urging means. At this time, the fitted state between the concave and convex portions is released by rotation, so that the convex portions face each other. Thereafter, by releasing the pressing of the rolling ring, the fixing of the rolling ring to the shaft is completed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a rolling roll according to an embodiment of the present invention. In the following description, the same reference numerals are given to the same components as those of the above-described conventional rolling roll, and the description thereof will be omitted.

The rolling roll according to the present embodiment includes a spacer 8
And a fixing member 34 provided between the hydraulic nut 18 and
The shape of the portion of the hydraulic nut 18 that comes into contact with the fixing member 34 is characterized.

As shown in FIG. 2, the fixing member 34 is a ring-shaped integral member, and has, at one end thereof, an uneven portion 40 in which a plurality of convex portions 36 and concave portions 38 are alternately arranged along the circumferential direction. Are formed. Also, the inner diameter r1 of the fixing member 34
Is equal to the outer diameter of the piston ring 20 and the outer diameter r
2 is smaller than the outer diameter of the spacer 8. On the other hand, a portion of the hydraulic nut 18 that abuts on the fixing member 34 has an uneven portion 42 that fits into the uneven portion 40 of the fixing member 34 without a gap.
Are formed.

When the rolling ring 4 is fixed to the shaft 2 in the rolling roll having the above structure, each member is arranged in the state shown in FIG. 1 in the same manner as in the conventional rolling roll. At this time, the concave / convex portion 40 of the fixing member 34 and the concave / convex portion 42 of the hydraulic nut 18 are fitted without any gap (the state shown in FIG. 3). In the state shown in FIG. 1, the hydraulic mechanism 22 does not apply pressure to the piston ring 20.

Next, the hydraulic mechanism 22 is driven to apply pressure to the piston ring 20, and the piston ring 20 pushes the spacer 8 toward the rolling ring 4 to maximize the gap distance. Subsequently, in this state, the fixing member 34 is rotated around the axis, and the convex portion 36 of the concave / convex portion 40 and the concave / convex portion 42
Are brought into contact with each other (FIG. 4).

Thereafter, when the pressure state of the hydraulic mechanism 22 is released, the fixing member 34 is sandwiched between the spacer 8 and the hydraulic nut 18 by the urging force of the leaf spring 16, and at the same time, the rolling ring 4 Pressed by spacers 6 and 8 from both sides,
It is completely fixed on the shaft 2.

Therefore, according to the rolling roll according to the present embodiment, every time the rolling ring 4 is fixed or released, the fixing member is not required to be attached and removed with the bolt member as in the conventional case, and the rolling ring is not required. The attachment / detachment work can be greatly speeded up. Moreover, the fixing member 34 is made of a ring-shaped integral member, so that the fixing member 34 does not come off from the shaft 2 during rolling, so that the safety of work can be improved. As described above, it is not necessary to machine the bolt holes and the like, so that the machining cost required for manufacturing the fixing member can be reduced, and the economy can be improved.

The present invention is not limited to the above-described embodiment. For example, an uneven portion may be formed on both sides of the fixing member 34, and an uneven portion may be formed on the other end 8b of the spacer 8. Good.

Further, a configuration as shown in FIG. 5 may be employed without forming an uneven portion on the spacer 8 and the hydraulic nut 18. The figure shows a structure in which a first ring member 44 having the same shape as the fixing member 34 shown in FIG. 1 and a second ring member 46 having the same shape as the fixing member 34 constitute one fixing member 48. The uneven portions are arranged between the spacer 8 and the hydraulic nut 18 so as to face each other. With such a configuration, the same operation and effect as the above embodiment can be obtained.

[0022]

As described above, according to the rolling roll according to the present invention, it is possible to easily fix and release the rolling ring only by rotating the fixing member or a part of the fixing member. Work can be accelerated. Further, the fixing member is formed of a ring-shaped integral member, so that the fixing member does not come off from the shaft during rolling, thereby improving work safety. There is no need to process holes or the like, so that the processing cost required for manufacturing the fixing member can be reduced, and the economic efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a rolling roll according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a fixing member in FIG.

FIG. 3 is a partial arrow view from the direction A in FIG. 1;

FIG. 4 is a partial arrow view from a direction A in FIG. 1;

FIG. 5 is a side sectional view showing a rolling roll according to another embodiment of the present invention.

FIG. 6 is a side sectional view showing a conventional rolling roll.

FIG. 7 is a side sectional view showing a conventional rolling roll (a state before a fixing member is mounted).

FIG. 8 shows a conventional rolling roll (with a fixing member mounted).
FIG.

FIG. 9 is a front view showing a conventional fixing member.

[Explanation of symbols]

 2 shaft 4 rolling ring 6,8 spacer 16 urging means 18 pressing means 34,48 fixing member 44 first ring-shaped member 46 second ring-shaped member

────────────────────────────────────────────────── ─── of the front page continued (72) inventor of Mitsuhiro Takatsuki Gifu Prefecture Anpachi District Kobe-cho Oaza Yokoi shaped Nakaniida 1528 address Mitsubishi Materials Corporation Gifu in the Works (58) investigated the field (Int.Cl. ^6, DB name) B21B 27/00-27/05, 31/08 F16C 13/00-15/00

Claims (2)

(57) [Scope of request for utility model registration] 1. A rolling ring is mounted on an outer peripheral portion of a shaft so that both sides thereof are sandwiched by spacers, and the rolling ring is placed at a predetermined position on the shaft near one end of the rolling ring. An urging means for urging toward the end is provided, and is fixed on the shaft at a predetermined position near the other end of the rolling ring on the shaft, and a part of the inner peripheral side is fixed to the one end. A pressing means that can be pressed toward is provided, and between the rolling ring and the pressing means, in a rolling roll in which a fixing member is attached along a circumferential direction of the shaft, the fixing member has one end side. Alternatively, the spacer or the pressing means, which is formed of an integral ring-shaped member having uneven portions formed along the circumferential direction on both end sides and fits into the uneven portion of the fixing ring, fits into the uneven portion. Rolling roll characterized in that the uneven portion is formed. 2. A rolling ring is mounted on an outer peripheral portion of a shaft in such a manner that both sides of the rolling ring are sandwiched by spacers, and the rolling ring is placed at a predetermined position on the shaft near one end of the rolling ring. An urging means for urging toward the end is provided, and is fixed on the shaft at a predetermined position near the other end of the rolling ring on the shaft, and a part of the inner peripheral side is fixed to the one end. A pressing means that can be pressed toward is provided, and between the rolling ring and the pressing means, in a rolling roll in which a fixing member is attached along a circumferential direction of the shaft, the fixing member has one end side. An integrated first ring-shaped member having an uneven portion formed along a circumferential direction of the first ring-shaped member, and an integrated second ring-shaped member formed with an uneven portion fitted on the uneven portion of the first ring-shaped member on one end side Consisting of Rolling roll characterized.