Method of Manufactring Ring-Shaped Member
a manufacturing method and ring-shaped technology, applied in the direction of metal-working devices, etc., can solve the problems of increasing achieve the effect of reducing the cost improving the yield rate or the percentage of the weight of the ring-shaped member with respect to the weight of the raw material, and thinning the radial inner region
Inactive Publication Date: 2009-06-25
KANEMITSU KK
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0020]According to the present invention, the yield rate or the percentage of the weight of the ring-shaped member with respect to the weight of the raw material is improved by removing the material such that the percentage of the skeleton and the slug with respect to the ring-shaped member is suppressed low, and the cost of the ring-shaped member can be reduced. Furthermore, “extension” of the radial inner region at the curved parts of the longitudinal annular blank is suppressed as much as possible, thinning the radial inner region can be avoided, and stress concentration of the radial inner region is alleviated, whereby cracks are not generated at the curved parts of the longitudinal annular blank, and the yield rate or the percentage of the ring-shaped member with respect to the longitudinal annular blank can be advantageously improved.
Problems solved by technology
However, in the conventional manufacturing method, the yield rate or the percentage of the weight of the ring-shaped member 1 with respect to the weight of the raw material 2 is bad, and tends to increase the cost of the ring-shaped member 1.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0043]A preferred embodiment of the method of manufacturing the ring-shaped member according to the present invention will now be described based on the drawings.
[0044]As shown in FIG. 1, a plurality of longitudinal annular blanks 3 is punched out in series at a predetermined spacing 1 in the feeding direction by the pressing device while feeding the raw material 2 of a predetermined plate thickness in the longitudinal direction of the raw material 2 as shown by an arrow X. The raw material 2 used may be that formed in to a plate shaped body by rolling the metal rod material such as copper, aluminum, iron, stainless steel and the like, or that formed as a plate shaped body from the beginning. The longitudinal annular blank 3 may be obtained by performing press work such as cutting and punching, casting and the like on the metal rod material instead of being obtained by punching out the raw material 2 of plate shaped body.
[0045]The longitudinal annular blank 3 includes linear parts 3...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Weight | aaaaa | aaaaa |
Login to View More
Abstract
The yield rate or the percentage of the weight of the ring-shaped member with respect to the weight of the raw material and the yield rate or the percentage of the ring-shaped member with respect to the blank are improved to achieve the cost reduction. A half-finished article 18 having large curved parts 3D obtained by widening the curved parts 3d so as to have a curvature radius larger than the initial curvature radius, and bulge-out parts 3E curved to a circular arc shape at a curvature radius larger than the curvature radius of the curved parts 3d at the linear parts 3b, 3c is molded, and thereafter, the half-finished article 18 is molded into an annular shape to obtain the ring-shaped member 1.
Description
TECHNICAL FIELD[0001]The present invention relates to a method of manufacturing a ring-shaped member.BACKGROUND ART[0002]A ring-shaped member 1 as shown in FIG. 12 has been conventionally manufactured through a method of punching out a plurality of annular ring-shaped members 1 by one column or a plurality of columns by a pressing device from a raw material 2 having a predetermined plate thickness as shown in FIGS. 13(a) and 13(b).[0003]However, in the conventional manufacturing method, the yield rate or the percentage of the weight of the ring-shaped member 1 with respect to the weight of the raw material 2 is bad, and tends to increase the cost of the ring-shaped member 1.[0004]This is because the material is removed at high percentage of skeleton S1 and slug S2 with respect to the ring-shaped member 1. The “Skeleton” is a frame shaped scrap that remains after punching out a plurality of ring-shaped members 1, and the “slug” is a plurality of scraps punched out and removed with a ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B21D28/00
CPCB21D53/16B21D28/06
Inventor KANEMITSU, TOSHIAKIKANEMITSU, SHUJIODA, MISAOOHNISHI, MASATAKAFUJII, NAOKIODA, KAZUYUKI
Owner KANEMITSU KK