Method for forming a gear
OwnerChih-Hao LIN, Tseng-Jen Cheng +1inventors
InventorsChih-Hao LIN, Tseng-Jen Cheng, Yu-Ting Lin
Life of this patent
Estimating the term…
Abstract
A method for forming a gear, including the following steps: first obtaining a billet, then carrying out a backward extrusion process of the billet to form a forged billet with a blind hole by using a mold, and the forged billet has an appropriate axial length and an appropriate radial length. Then, a precise piercing process is carried out to remove the solid billet portion remained in the blind hole of the forged billet to form a through hole. Then, trimming of the through hole is carried out to form a high-precision inner hole, and positioning is carried out based on the high-precision inner hole to implement a pressing process of an outer tooth shape of the forged billet to form the gear.
Claims12
A method for forming a gear, the method comprising following steps of:
- carrying out a backward extrusion process of a billet to form a forged billet with a blind hole by using a mold, wherein the forged billet is formed with an appropriate axial length and an appropriate radial length;
- carrying out a precise piercing process of the forged billet to remove a solid billet portion remained in the blind hole of the forged billet so as to form a through hole;
- and
- carrying out a positioning process of the forged billet based on the through hole, so as to implement a pressing process of an outer tooth shape of the forged billet, thereby forming the gear.
Dependencies are inferred from the claim text.