Method of manufacturing an elbow, cutting tool, and elbow
AssigneeNoda Kanagata Co., Ltd.
InventorNobuo HORIGUCHI
Life of this patent
Estimating the term…
Abstract
Provided is a method of manufacturing an elbow, including: a first cutting step of cutting a material by relatively moving a cutting section of a cutting tool, which is formed of at least apart of a substantially spherical shape, along an inner side surface of the elbow to be finished in a direction from a first end surface to a second end surface of the material; and a second cutting step of cutting the material by relatively moving the cutting section along the inner side surface of the elbow to be finished in a direction from the second end surface to the first end surface of the material.
Claims27
A cutting tool, comprising:
- a cutting section formed of at least a part of a substantially spherical shape, the cutting section comprising a plurality of cutting edges;
- and
- a shaft section extending from the cutting section.
A method of manufacturing an elbow, comprising:
- a first cutting step of cutting a material by relatively moving a cutting section of a cutting tool, which is formed of at least a part of a substantially spherical shape, along an inner side surface of the elbow to be finished in a direction from a first end surface to a second end surface of the blank;
- and
- a second cutting step of cutting the material by relatively moving the cutting section along the inner side surface of the elbow to be finished in a direction from the second end surface to the first end surface of the material.
An elbow, comprising:
- an inner side surface having an axial center bending inward at a predetermined curvature, the inner side surface having a circular shape in cross section;
- and
- an outer side surface formed along the inner side surface, the outer side surface having a diameter larger than a diameter of the inner side surface,
- wherein the inner side surface has the same flatness in a surface on an inner side of the curvature, and in a surface on an outer side of the curvature.
A method of manufacturing an elbow, comprising:
- a step of forming a starting hole at a substantially center portion of an inner side surface of the elbow to be finished;
- a first cutting step of cutting a material by relatively moving a side cutter in a direction along the inner side surface of the elbow to be finished, and in a direction from a first end surface to a second end surface of the material;
- and
- a second cutting step of cutting the material by relatively moving the side cutter in the direction along the inner side surface of the elbow to be finished, and in a direction from the second end surface to the first end surface of the material.
Dependencies are inferred from the claim text.