JPH06269888A - Method for shaping long size special shaped cross-sectional bar stock - Google Patents

Abstract

PURPOSE:To accurately finish a lateral dimension by simply cutting both side peripheries of a long size deformed cross-sectional bar stock shaped with rolling rolls without damaging on the article together with continually shaping. CONSTITUTION:In a time of shaping a long size deformed cross-sectional bar stock 1 with rolling rolls 2a, 2b, removing parts 12 deviated to a plate surface direction of one side of a bar stock are formed on both sides of the bar stock at the same time, and successively the removing parts 12 are cut away from the plate surface with a pair of prepared cutting rolls by pressurizing the bar stock 1 to the other plate surface direction. Therefore, the shaping and the cutting of the both side peripheral parts can be continually executed, the workability is improved, an article without generating a center deviation can be produced without using a slitter and a beautiful article without a fault can be produced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for shaping an elongated profiled strip having a thick portion and a thin portion and accurately locating these portions.

[0002]

2. Description of the Related Art Conventionally, for example, a thick portion a as shown in FIG.
A long profiled strip material c having a thin portion b and a thin portion b is shaped by die rolling into substantially the same shape, and then a rolling roll e having a ditch d as shown in FIG. 2 and a flat rolling roll. It is passed through a pair of rolls with f to perform shaping, the rolled strip is once wound, and the rolled strip c is pulled out again, and both side edges are cut in order to accurately finish the width of the strip c. Slitting process is applied to finish the long and irregular profile strip with accurate dimensions. The strip c shaped in this way is cut and sliced and used for electronic components, electrical components such as contacts, or precision machinery components.

[0003]

Recently, this kind of strip c has been used.
For example, in FIG. 1, in the dimensions A and B of the thin portion b with respect to the thick portion a,
High precision is required so that | AB | is 0.1 to 0.05 mm or less, and in order to satisfy these requirements,
A guide for positioning the thick portion a is provided in front of the cutter in the slitter process, and this guide is always manually operated,
Although the work is processed so that the strip material does not shift during cutting, that is, the center shift does not occur, it is troublesome to always perform such a guide operation, and this guide makes it difficult for the rising part side surface of the thick part a and the thin part to be formed. There was a defect that scratches occurred.
Further, the strip c shaped by the rolling rolls e and f is not directly guided to the slitter to cut the both side edges, but the strip c rolled and shaped is once wound and conveyed to the slitter. Since it was pulled out again, slid, and wound again, the workability was poor, and the tip of the material c to connect the rolling roll to the winder and the tip of the material c from the slitter to the winder were Since it cannot be processed, it becomes a defective product, and the processing yield is also poor.

The present invention solves the above-mentioned drawbacks, and cuts out both side edges of a long profiled strip material shaped by a rolling roll in a straight line without damaging the product, and corrects the width dimension accurately. The purpose of the present invention is to provide a method capable of finishing.

[0005]

According to the present invention, there is provided a method for shaping a metal strip having a thick section and a thin section between a pair of rolling rolls by passing the metal strip with a long cross-section. When shaping the strip material having a long cross-section with the rolling roll, at the same time, a removing portion is formed on both sides of the strip material, the removal portion being displaced in the plate surface direction of the strip material, and then a pair of cuts prepared. The above-mentioned object is achieved by pressing the removed portion toward the other plate surface of the strip by a roll to separate it from the plate surface. By forming a ridge portion on one peripheral surface of the pair of cutting rolls that conforms to the ridges and valleys formed on the plate surface of the long profiled strip material, the removal portion can be formed by fitting these ridge portions. The long material can be positioned at the time of cutting off.

[0006]

When the prepared long-section strip material passes between a pair of rolling rolls, the surface shape of the strip material is shaped. The concave line and the convex line are formed in advance so as to form the removed portion which is deviated to one side. The strip with the removed portion shaped is then passed through a cutting roll, and at this time, the removed portion that has shifted out in one plate surface direction and is ejected is pressed by the cutting roll in the other plate surface direction, The pressure causes the root portion of the removed portion to break and separate.

[0007]

Embodiments of the present invention will be described with reference to the drawings.
In FIG. 3, reference numeral 1 denotes a long strip-shaped strip material formed of pure copper, copper alloy, permalloy or the like on a profile section having thick and thin portions with a die rolling device (not shown). The long profiled strip material 1 has a surface shape of a pair of rolling rolls 2.
It is shaped by passing between a and 2b. As shown in FIG. 4, one rolling roll 2a has a groove 4 formed therein, and the other rolling roll 2b has a groove 5 formed in a portion corresponding to the central portion of the groove 4. In addition, the ridges 6 and 6 having the same shape and the same width are formed on both sides of the ridge 5, and the ridges 6 and 6 are formed on both outer sides of the ridges 6 and 6 at positions deviating from positions facing the ridge 4. The recesses 7, 7 for forming the removed portion deeper than 5 are formed. In the example shown in the figure, a step 9 is formed in a portion continuing from each of the ridges 6 to the bottom surface of the recess 7, 7, and the height h from the ridge 6 to the step 9 is made equal to the depth i of the ridge 4. I tried to be. Moreover, when these rolling rolls 2a and 2b are set, from the surface of the groove 4 of the rolling roll 2a,
The distance j to the central groove 5 of the rolling roll 2b and the distance k from the surface of the rolling roll 2a to the surface of the recess 7 for forming the removed portion of the rolling roll 2b are made equal.

When the strip 1 passes the rolling rolls 2a, 2b, as shown in FIG. 4, the plate surfaces of the thick part 10 and the thin part 11 and the plate surface on the opposite side are shaped, and At the same time, the recessed portion 4 and the recessed portion 7 form a removing portion 12 protruding along the both side edges of the strip 1 toward one plate surface of the strip 1.

After the shaping by the rolling rolls 2a, 2b is completed, the strip 1 passes through the pair of cutting rolls 13a, 13b as shown in FIG. The long material 1 is cut by the shearing force given by the cutting rolls 13a and 13b and separated from both sides of the long material 1. One of the cutting rolls 13a has a groove 1
5 and the ridges 16 and 16 are provided so that the thin portion 11 and the thick portion 12 of the strip 1 can be pressed so as not to move.

When shaping a deformed cross-section strip 1 having a thick portion having a width of 24 mm and a thickness of 2.2 mm in the central portion and a thin portion having a width of 30 mm and a thickness of 1 mm on both sides thereof, rolling rolls 2a and 2b are Form a recess 7 on both sides that is 0.7 mm deeper than the recess 5.
The distance l between the rolling rolls 2a and 2b was set to 1.05 mm. When the strip 1 is passed between the rolling rolls 2a and 2b, the removing portion 12 protruding toward one plate surface of the strip 1
A profiled strip with a contour is shaped, which is followed by a space 1
After passing between the cutting rolls 13a and 13b set to mm, the removing portion 12 was pushed by the cutting roll in the direction opposite to the plate surface and separated at the position of the constricted root portion 14. The difference in width between the thin-walled portions on both sides of the shaped cross-section strip material 1 that had been shaped was ± 0.03 mm, which was highly accurate. No scratch was found on the surface of the modified cross-section strip material.

It should be noted that as the modified cross-section strip, various cross-sectional shapes can be shaped, for example, those having thick portions on both sides as shown in FIG. 6 can be shaped. In this case, both side edges are the same as described above. By forming the removed portion of, the product having no center deviation between the thick portion and the thin portion can be obtained.

[0012]

As described above, according to the present invention, when a strip material having a long irregular cross section is passed between a pair of rolling rolls to shape the strip material, at the same time, one of the strip materials is formed on both sides of the strip material. Since the removing portion that is displaced in the plate surface direction is formed and then the removing portion is pressed by the pair of cutting rolls toward the other plate surface of the strip to separate it from the plate surface, shaping and both side edge portions are performed. Can be continuously cut, the workability is improved, a product without center deviation can be manufactured without using a slitter, and a clean product without scratches can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a modified cross-section strip material.

FIG. 2 is an explanatory view of a conventional method for manufacturing a modified cross-section strip material.

FIG. 3 is a side view of an embodiment of the present invention.

4 is a sectional view taken along line AA of FIG.

5 is a sectional view taken along line BB of FIG.

FIG. 6 is a sectional view of another profiled strip material shaped according to the present invention.

[Explanation of symbols]

 1 Elongated profiled strip material 2a, 2b Rolling roll 12 Removal section 13a, 13b Cutting roll

Claims (2)

[Claims] 1. A method for shaping a metal strip having a thick and thin portion between a pair of rolling rolls to shape the strip, wherein the strip is rolled by the rolling roll. When shaping a strip material having a modified cross-section, at the same time, a stripping portion is formed on both sides of the strip material, the stripping portion being displaced in the direction of one plate surface of the strip material. A method for shaping a long profiled strip material, which comprises pressing the material in the direction of the other plate surface to separate it from the plate surface. 2. A peripheral surface of one of the pair of cutting rolls,
Forming a ridge that conforms to the ridges and valleys formed on the plate surface of the long profiled strip, and positioning the strip when separating the removed portion by matching these ridges. The method for shaping a long profiled cross-section strip according to claim 1.