JPH10286645A - Drawing roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drawing roller for thickening work without causing a roller crack by resolving the problem such as metal flow phenoment that the conventional drawing roller for thickening the outer periphery of a disk base stock is bisected left and right at the vertex part of a groove bottom to form a V-groove part, then at the time of working, the vertex part of the bottom is expanded to allow the base stock to flow into the expanded portion. SOLUTION: This drawing roller 1 having a groove part 4 for thickening the outer periphery of the disk base stock by compression is constituted of an intermediate body 3 forming the bottom of the groove part 4 and a pair of left and right main bodies 2a, 2b interposed with the intermediate body 3 between on both sides of the intermediate body 3. On respective main bodies 2a, 2b left and right inclined surfaces 6a, 6b stretching a shallow groove part 5 are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thickening squeezing roller used for pressurizing the outer periphery of a disk material to increase the thickness.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a squeezing roller for thickening when the outer periphery of a disk material is pressed to increase the thickness.
The squeezing roller 20 is formed at the top of the arc-shaped bottom portion 23 so as to form a V-shaped groove portion 22 having an appropriate angle α.
The divided right and left main bodies 21a and 21b are fixed by fixing means (not shown) such as bolts. 24a, 24
b indicates the slope of the V-shaped groove, and the angle α varies depending on the thickness of the material to be thickened. Reference numeral 25 denotes an insertion hole into which a bearing is inserted.

The thickness of a disk material is increased by a well-known spinning machine M shown in FIG. In the figure, a thin disk-shaped material A formed by an appropriate means such as a press machine is pinched and fixed by a mandrel M1 of a rotating spindle D of a spinning machine M and a mandrel M2 of the other tailstock T. C denotes a reciprocating tool table. A turret table G is mounted on the tool table C, and a squeezing roller 20 for thickening is mounted thereon. When a plurality of thickening processes are required according to the thickness of the material to be thickened and the volume to be thickened, the squeezing roller 20 for thickening is used in accordance with the number of processes.
0 is attached. FIG. 6 shows the case of two steps. P1 denotes a traverse pulse motor of the reciprocating tool table C, and P2 denotes a forward pulse motor of the turret table G. Although a backup roller is provided so as to sandwich the material opposite to the reciprocating tool table C, it is out of the gist of the present invention, and the description is omitted.

In the above configuration, as shown in FIG.
Is rotated, the thickening processing squeezing roller 20 is provided on the outer periphery of the material, and the edge of the material A is pressed so that the end of the raw material A is moved as shown in FIG. And the outer periphery is trapped in a trapezoidal section.
To increase the thickness of the intermediate material B. Next, if necessary, the turret table G is rotated and the same thickening is performed using a thickening processing squeezing roller having a different angle of the slope 22 to form a desired shape.

[0005]

However, in this case, when the thickness of the material A to be processed becomes thin (for example, 3 mm).
The angle α formed by the slopes 24a, 24b of the groove portion 22 of the thickening aperture roller 20 is an acute angle, and the thickness increasing aperture roller 20 is divided into two such as the main bodies 21a, 21b. If not, roller cracking may occur. In addition, in the case of dividing into two parts as shown in FIG. 3, it is possible to prevent the roller from cracking. However, when the load is increased in the thickening processing as shown in FIG. Power is created,
There is a problem that a metal flow phenomenon occurs in which the top portion of the bottom portion 23 expands and the material A flows into the expanded portion 26, and the quality of the formed intermediate material B cannot be ensured.

SUMMARY OF THE INVENTION In view of the foregoing, in the present invention, in the process of increasing the thickness of a thin-walled disc material, there is no occurrence of roller cracks in the left and right drawing rollers, and therefore, the material does not flow into the top of the groove bottom of the drawing roller. An object of the present invention is to provide a drawing roller for meat processing.

[0007]

According to a first aspect of the present invention, there is provided a squeezing roller having a groove for increasing the outer circumference of a disk material by compression, comprising: an intermediate member for forming a bottom of the groove; It comprises a pair of left and right main bodies provided on both sides of the intermediate body, and each main body has left and right inclined surfaces connected to the shallow groove portion.

According to the present invention having the above structure, even when the load is increased in the thickening process, the material does not flow into the top of the bottom of the groove of the drawing roller for the thickening process even if the side portion slides in the axial direction. Absent.

In a second aspect of the present invention, one main body having one inclined surface connected to the groove portion and an intermediate body forming the bottom portion are integrally formed, and the other main body has an inclined surface. Features.

In the present invention having the above structure, one main body forming one side surface of the groove and the intermediate body forming the bottom of the groove are integrally formed, so that the squeezing roller can have a two-part structure.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of the present invention. A disk-shaped intermediate body 3 having a shallow groove portion 5 forming a groove bottom, and a pair of right and left main bodies 2a having a U-shaped cross section forming a slope 6a, 6b of a V-shaped groove portion 4 connected to the shallow groove portion 5; 2b is fixed by fixing means (not shown) such as bolts. 6
The angle β formed by a and 6b differs depending on the thickness of the material to be subjected to the thickness increasing processing. Reference numeral 7 denotes an insertion hole into which a bearing is inserted. The squeezing roller 1 may have a trapezoidal groove portion 4 having a groove bottom passing line without providing the shallow groove portion 5 on the outer periphery of the intermediate body 3.

In the above configuration, the processing of increasing the thickness of the disk material A is performed by a method similar to the conventional method (see FIGS. 4 and 5).

When the load increases during the thickening process, an outward force is applied to the left and right main bodies 2a and 2b, but the shallow groove 5 forming the bottom of the groove is formed on the outer peripheral surface of the intermediate body 3. It is a shallow groove configured in the
The slopes 6a, 6b only move in the direction of the dotted line shown in FIG. 1B (however, the position of the dotted line is exaggerated).

FIG. 2 shows a second embodiment. The squeezing roller 10 according to the present invention includes a main body 11 in which the one main body 2b and the intermediate body 3 in the squeezing roller 1 according to the first invention are integrated.
b and the other main body 2 of the squeeze roller 1 of the first invention.
A main body 11a having the same shape as a is fixed by fixing means (not shown) such as a bolt. The slope 14b and the bottom 13 have an integral structure, and the slope 14a forms the V-shaped groove 12. Reference numeral 15 denotes an insertion hole into which a bearing is inserted.

In the above configuration, when the load increases during the process of increasing the thickness of the disk material A, only the slope 14a moves outward.

[0016]

As described above, according to the present invention, when forming a V-shaped groove for increasing the outer circumference of a disc material by compression, an intermediate having a shallow groove forming the bottom of the groove, It is composed of a pair of left and right main bodies disposed on both sides of the main body.Since each main body has left and right inclined surfaces connected to the shallow groove portion, even if the load increases during the thickening process, Since the material does not expand right and left at the apex portion of the V-shaped groove portion, the material of the material does not flow into the bottom of the groove portion of the expanded roller as in the conventional case, and the quality of the intermediate material after processing is maintained at a high quality. I can do it. Further, in the second invention, one main body having one inclined surface connected to the groove portion and an intermediate body forming the bottom portion are integrally formed, and the main body having the other inclined surface is constituted, and the structure is constituted. Since the roller is divided into two parts (two pieces), it has an effect that the roller can be manufactured at a low cost with a simple structure.

[Brief description of the drawings]

FIGS. 1A and 1B are cross-sectional views of a drawing roller for thickening according to a first invention, wherein FIG. 1A is an overall cross-sectional view and FIG.

FIG. 2 is a cross-sectional view of a thickening process drawing roller according to a second invention.

FIG. 3 is a sectional view of a conventional drawing roller for thickening.

FIG. 4 is a schematic explanatory view of a spinning machine that performs a thickening process.

FIG. 5 shows a first step of a forming method of a thickening process;
FIG. 2A is an explanatory view of the processing procedure, and FIG. 2B is an enlarged explanatory view of a formed portion by the processing.

FIG. 6 is a partially enlarged cross-sectional view of a formed portion in a conventional thickening process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Squeeze roller 2a Main body 2b Main body 3 Intermediate body 4 Groove part 5 Shallow groove part 6a Slope 6b Slope

Claims (2)

[Claims] 1. A squeezing roller having a groove for increasing the outer circumference of a disk material by compression, and an intermediate body forming a bottom of the groove, and a pair of left and right main bodies disposed on both sides of the intermediate body. Wherein each main body has left and right inclined surfaces connected to the shallow groove portion. 2. A main body having one slope having one slope connected to a groove, and an intermediate body forming a bottom integrally formed with one body having the other slope. The described squeezing roller.