JPH0882502A - Shape detection roller - Google Patents

Abstract

PURPOSE: To provide a shape detection roller which eliminates possible surface defect on the surface of a rolled plate material attributed to the use of the shape detection roller. CONSTITUTION: In this shape detection roller, a plurality of discs each containing a pressure sensor are arranged successively concentric on an outer circumference part and a gap 11 is formed between outer circumferential upper parts 9 and 9 of adjacent discs to prevent the outer circumferential upper parts 9 and 9 from interfering with each other. An angle part of each outer circumferential upper part 9 is chamfered. The radius of curvature of the chamfered part 12 is 5μm or more while the total W of the lengths of the gap 11 on the outer circumferential surface of the roller and the chamfered parts 12 of the adjacent outer circumferential upper parts 9 is 500μm or less.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shape detecting roller for detecting the extension of each part in the width direction of a rolled plate material.

[0002]

2. Description of the Related Art Rolling plates that run are rotatably supported in the width direction thereof, and rollers (shape detection rollers) for detecting the pressing force of each part of the rolling plate in the width direction are provided. There is a method of measuring the tension and thus the elongation and detecting the shape of the rolled plate in the width direction.

The shape detecting roller is disclosed in, for example, Japanese Patent Laid-Open No. 1-
No. 207601, and FIG. 4 and FIG.
As shown in FIG. 2, a plurality of discs 2 each having a pressure sensor 1 built-in on the outer periphery are sandwiched between a pair of left and right fixed plates 3 and are concentrically provided continuously by a tie rod 4 in the axial direction. An end member 6 having 5 is attached concentrically. The disk 2 has a pressure sensor 1 mounted between a lower outer peripheral portion 8 and an upper outer peripheral portion 9 thereof.
Are in contact with the outer peripheral lower portion 8 of the adjacent disk 2 to regulate the mounting interval, and a gap 11 having a width of several tens of μm is formed between the outer peripheral upper portions 9 to prevent mutual interference of the outer peripheral upper portions. The seal ring 10 is mounted in the gap 11. Since the outer peripheral surface (upper peripheral upper surface) of the shape detection roller comes into contact with the rolled plate material, wear resistance is required,
Hard chrome plating and high hardness lining materials such as tungsten carbide may be sprayed to improve the surface hardness.

[0004]

In the shape detecting roller, a plurality of disks each having a built-in pressure sensor are continuously arranged in the axial direction, assembled into one roller, and finished by grinding. By the grinding process, a sharp edge is formed at the upper corner of the outer periphery facing the gap between the disks. For this reason, when the shape detection roller is used during rolling, a sharp edge is transferred to the rolled plate material or scratches due to the sharp edge are generated, which may deteriorate the surface quality of the rolled plate material.

The present invention has been made in view of the above problems, and an object of the present invention is to prevent the occurrence of surface defects on the rolled sheet material due to the use of the shape detecting roller.

[0006]

In the shape detecting roller of the present invention, a plurality of discs each having a pressure sensor built in at the outer periphery thereof are concentrically connected to each other, and the outer peripheral upper portions are arranged between the outer peripheral upper portions of adjacent discs. In a shape detection roller having a gap formed to prevent interference, the corner portion of the outer peripheral upper portion is chamfered, the radius of curvature in the chamfered portion is 5 μm or more, and the gap between the disc and the outer peripheral upper surface of an adjacent disc. The total width W of the chamfered portions (referred to as a processed width) is 500 μm or less.

[0007]

When chamfering is applied to the upper corner of the outer circumference, a slight change in the shape and roughness occurs on the upper surface of the outer circumference (outer peripheral surface of the roller) and the surface not subjected to the above processing. If the width is large, uneven gloss and oil stains appear on the surface of the board. If the processing width exceeds 500 μm, these become noticeable, resulting in product defects. Also, in the chamfer,
If the minimum radius of curvature is less than 5 μm, the effect of removing sharp edges at corners is small, and it is difficult to obtain a sufficient effect.

[0008]

The basic structure of the shape detecting roller according to the present invention is the same as that of the conventional one, but the shape of the corner portion of the outer peripheral upper portion of the disk is different. Of course, plating or a high hardness lining sprayed layer may be formed on the outer peripheral surface of the disk. The disc material is SCM material (for example, SCM-440).
Low alloy steels and SKD materials for machine structures (for example, SKD
Alloy tool steels such as 11) are used.

FIG. 1 is an enlarged view of adjacent portions of the disks according to the embodiment, and chamfered portions 12 having a radius of 30 to 50 μm are formed at the corners of the outer peripheral upper portions 9 and 9 facing the gap 11 between the disks. . The gap 11 is usually set to several tens of μm, but when this value is S, the processing width W is (S + 60 to
100) μm. FIG. 2 shows another example of the chamfered portion 12. An inclined surface 13 having a minute angle is formed from the upper surface of the outer peripheral upper part, and subsequently, a rounded portion 14 having a minute radius of 5 μm or more is formed. Further, a slanted surface 15 is formed toward the outer peripheral upper side surface. The processing width W in this case is the distance between the starting points of the inclined surfaces 13, 13 on the upper surface of the outer peripheral upper portion of the adjacent disks.

In the shape detecting roller according to the present invention, a disk processed into a predetermined shape is subjected to quenching and tempering heat treatment to have high hardness, and if necessary, hard plating is performed.
Attach pressure sensors, assemble a plurality of them concentrically in the axial direction, and finish grinding the outer peripheral surface. When plating is not applied, after the disk is assembled, rough grinding may be performed, and then a high hardness lining material may be sprayed thereon, and finish grinding processing may be applied.
Then, the roller is rotated, and a grindstone having a predetermined shape is pressed against the corners of the outer peripheral upper portions 9 facing the gap 11 of the disc to perform chamfering. Alternatively, chamfering may be performed by applying a paste containing abrasive particles to the corners.

FIG. 3 is a surface roughness diagram (up to 50 times in the horizontal direction and 1000 in the vertical direction) of the outer peripheral upper part in the vicinity of the disc gap before (A) and after (B) chamfering by the handler hand.
When using the shape detection roller before and after processing in the figure for rolling, sharp edges were transferred and scratches were generated before processing, but there were no defects after processing. It was

[0012]

As described above, according to the shape detecting roller of the present invention, the corner portion of the disk outer peripheral upper part facing the gap between the disks is chamfered, and the radius of curvature at the chamfered portion is 5 mm.
Since the total width W of the gap and the adjacent chamfered portion on the outer periphery is 500 μm or less, the sharp edge of the corner before chamfering causes the transfer of the edge to the rolled sheet material and the occurrence of scratches. In addition, good surface quality can be obtained without causing surface defects such as uneven gloss and oil stains.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of an essential part of an outer peripheral upper portion in the vicinity of a disc gap according to an example.

FIG. 2 is an enlarged cross-sectional view of a main part of an outer peripheral upper portion in the vicinity of a gap of a disk according to another embodiment.

FIG. 3 is a surface roughness diagram of an outer peripheral upper portion in the vicinity of a gap of a disk before (A) and after (B) chamfering by a handler hand.

FIG. 4 is a cross-sectional view of an essential part of a portion of a shape detection roller adjacent to a disk.

FIG. 5 is an enlarged cross-sectional view of a main part of the shape detection roller.

[Explanation of symbols]

 1 pressure sensor 2 disk 9 disk outer peripheral upper part 11 gap 12 chamfered part W processing width

Continuation of front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location G01B 21/20 G (72) Inventor Hideaki Yamashita 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Steel Co., Ltd. Chiba Corporation Inside the Steel Works (72) Inventor Yasuo Izumi 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Inside Kawasaki Steel Co., Ltd. (72) Inventor Shin Takada 1 Kawasaki-cho, Chuo-ku, Chiba Prefecture Kawasaki Steel Co., Ltd. Chiba Inside the steel mill (72) Hiroyuki Takahashi 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Inside Kawasaki Steel Co., Ltd. Chiba Steel (72) Inventor Masayoshi Okamoto, Niihama 2-chome, Arai-cho, Takasago, Hyogo Prefecture Kobe, Ltd. Steel Works Takasago Works (72) Inventor Nakaju Hirosyu 2-3-1 Niihama, Arai-cho, Takasago, Hyogo Prefecture Kobe Steel Works Takasago Works

Claims (1)

[Claims] 1. A plurality of discs each having a pressure sensor built in at the outer periphery thereof are concentrically connected to each other to prevent interference between the outer periphery upper parts (9) (9) between adjacent discs. In the shape detection roller in which the gap (11) for forming is formed, the corner portion of the outer peripheral upper portion (9) is chamfered, and the chamfered portion (1
A shape detecting roller having a radius of curvature of 5 μm or more in 2) and a total width W of the gap (12) of the disc and the chamfered portion (12) on the upper surface of the outer peripheral upper part of the adjacent disc is 500 μm or less.