Method for processing gear and cutter for processing gear
AssigneeAisin Seiki Kabushiki Kaisha
InventorsYoshitomo Nakahara, Nobuaki Kurita
Life of this patent
Estimating the term…
Abstract
A method for processing a gear includes a first cutting process starting the cutting of a work by moving a cutter in a first cutting direction while maintaining a cutting depth of the work at a setting value and reducing the cutting depth of the work before a first cutter portion reaches an end portion of a cutting area in the first cutting direction and a second cutting process synchronously rotating the work and the cutter in a reverse direction of rotational directions of the work and the cutter in the first cutting process, maintaining the cutting depth of the work at the setting value, and cutting the end portion of the cutting area by moving the cutter in a second cutting direction.
Claims12
A method for processing a gear, comprising processes of:
- arranging a work rotatably supported about a work axis and a cutter rotatably supported about a cutter axis such that the work axis and the cutter axis are offset from one another;
- synchronously rotating the work and the cutter at a predetermined ratio of an angular velocity;
- operating a first cutting process setting the cutter axis at a first posture wherein a tooth trace direction of a gear-shaped first cutter portion arranged at a first end of the cutter is along a tooth trace direction of the work, setting a first cutting direction wherein the first cutter portion is arranged at a downstream in a moving direction of the cutter in a direction along the work axis, starting the cutting of the work by moving the cutter in the first cutting direction while maintaining a cutting depth of the work, the cutting depth attained by using the first cutter portion, at a setting value, and reducing the cutting depth of the work before the first cutter portion reaches an end portion of a cutting area in the first cutting direction in the process of the cutting of the work;
- and
- operating a second cutting process synchronously rotating the work and the cutter in a reverse direction of rotational directions of the work and the cutter in the first cutting process after the first cutting process, setting the cutter axis at a second posture wherein the tooth trace direction of a gear-shaped second cutter portion arranged at a second end of the cutter is along the tooth trace direction of the work, maintaining the cutting depth of the work, the cutting depth attained by using the second cutter portion, at the setting value, and cutting the end portion of the cutting area by moving the cutter in a second cutting direction, a reverse direction of the first cutting direction.
A method for processing a gear, comprising processes of:
- arranging a work rotatably supported about a work axis and a cutter rotatably supported about a cutter axis such that the work axis and the cutter axis are offset from one another;
- synchronously rotating the work and the cutter at a predetermined ratio of an angular velocity;
- operating a first cutting process setting the cutter axis at a first posture wherein a tooth trace direction of a gear-shaped first cutter portion arranged at a first end of the cutter is along a tooth trace direction of the work, setting a first cutting direction wherein the first cutter portion is arranged at a downstream in a moving direction of the cutter in a direction along the work axis, starting the cutting of the work by moving the cutter in the first cutting direction while maintaining a cutting depth of the work, the cutting depth attained by using the first cutter portion, at a setting value, and maintaining the cutting of the work until the first cutter portion reaches an end portion of a cutting area in the first cutting direction;
- and
- operating a second cutting process synchronously rotating the work and the cutter in a reverse direction of rotational directions of the work and the cutter in the first cutting process after the first cutting process, setting the cutter axis at a second posture wherein the tooth trace direction of a gear-shaped second cutter portion arranged at a second end of the cutter is along the tooth trace direction of the work, increasing the setting value of the cutting depth of the work, the cutting depth attained by using the second cutter portion, by a setting amount, and cutting the end portion of the cutting area by moving the cutter in a second cutting direction, a reverse direction of the first cutting direction, by a predetermined length.
Dependencies are inferred from the claim text.