1. A method of manufacturing a member having a toothed portion, comprising:
a first step of cutting a work piece in predetermined dimensions, and then deburring the work piece, and
a second step, in succession with the first step, of pressing an axial end face of a portion to be toothed of the work piece with a predetermined load by a punch and a tooth forming guide fitted on the punch, and simultaneously drawing the work piece so as to form the toothed portion, the punch and the tooth forming guide being controlled, independently of each other, with hydraulic pressure.
2. A method as set forth in claim 1, wherein the member is a substantially cylindrical clutch housing, and the toothed portion is formed at an inner periphery or an outer periphery of the clutch housing.
3. A method as set forth in claim 1, wherein the member is a substantially cylindrical clutch hub, and the toothed portion is formed at an inner periphery or an outer periphery of the clutch hub.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A bread maker having a main body, an oven accommodated in the main body, a baking tray provided inside the oven, and a door rotatably connected to the main body to open and close the oven, the bread maker comprising:
a plurality of heaters on an inside of the door, to heat the oven;
a sealing part on the inside of the door to prevent leakage of heat from the oven, wherein the sealing part encircles the plurality of heaters; and
a rib extending from the baking tray to contact the sealing part such that the sealing part does not protrude into the oven to contact a center of a bottom of the baking tray.
2. The bread maker according to claim 1, wherein the rib is formed on a bottom edge of the baking tray.
3. The bread maker according to claim 1, further comprising a protuberant part formed on a bottom of the oven adjacent to a rear edge of the baking tray opposite the sealing part to minimize an impact of an external force.
4. A baking tray for a bread maker having a main body, an oven within the main body, a door rotatably connected to the main body to open and close the oven, a plurality of heaters on an inside of the door, to heat the oven, and a sealing part on the inside of the door, the baking tray comprising a rib extending from a bottom of the baking tray along a side of the baking tray adjacent to the door, the sealing part encircling the plurality of heaters and contacting the rib when the door is closed such that the sealing part does not protrude into the oven to contact a center of the bottom of the baking tray, to prevent leakage of heat from the oven.
5. A door for a bread maker having a main body, an oven within the main body, a baking tray, and a rib extending from a bottom of the baking tray along a side of the baking tray adjacent to the door, the door comprising a plurality of heaters on an inside of the door, to heat the oven, a sealing part on the inside of the door which encircles the plurality of heaters and contacts the rib when the door is closed to prevent leakage of heat from the oven, without the sealing part protruding into the oven to contact a center of the baking tray.