MUSASHI SEIMITSU INDUSTRY CO., LTD. Patent applications |
Patent application number | Title | Published |
20090293573 | Method of forging bevel gear - The present invention is a method of forging a bevel gear, comprising: a first forging step in which a first intermediate article is obtained by pressing a blank, such that there is formed a preliminary one-end recessed part that is axially recessed in an axis-center part on an axially one-end side and/or a preliminary other-end recessed part that is axially recessed in an axis-center part on an axially other-end side; a second forging step in which a second intermediate article is obtained by pressing the first intermediate article in a hermetically sealed cavity space defined by a first die and a second die that is positioned opposedly to the first die in the axial direction, such that there are formed: a body part including a tooth part on a radially circumference thereof and a one-end recessed part that is axially recessed in an axis-center part on the axially one-end side; and a projecting part projecting from a rear surface part of the body part on the axially other-end side; and a through-hole forming step in which a bevel gear having a through hole in an axis-center part is formed by removing the axis-center part extending from a bottom surface of the one-end recessed part to the projecting part of the second intermediate article. The tooth part provides a tooth-crest surface which is tapered from the axially other-end side to the axially one-end side, and upon completion of the second intermediate article in the second forging step, there remains an unfilled space between the projecting part of the second intermediate article and a wall surface of the dies defining the cavity space. | 12-03-2009 |
20090245960 | Method for removing chips on cutting machine and apparatus therefor - The present invention relates to a method for removing chips on a cutting machine. The method includes: a first step in which an air supplied from an air supply source is introduced to a first opening and is ejected from the first opening, so that an airflow having a predetermined chip blowing force is blown onto a first region among surfaces of respective parts of the cutting machine and respective parts of a work; and a second step in which a moving member having a communication path extending from an air inlet port to a second opening is moved to a position at which the air inlet port is communicated with the first opening, so that the air is ejected from the second opening and thus an airflow having a predetermined chip blowing force is blown onto a second region among the surfaces of the respective parts of the cutting machine and the respective parts of the work. | 10-01-2009 |
20090215573 | Differential gear - A differential case includes a first boss part into which a first drive shaft is inserted, and a second boss part into which a second drive shaft opposed to the first drive shaft is inserted. The differential case is composed of: a first case body extending from pinion-shaft assembling parts on which a pinion shaft is assembled, to a ring gear; a second case body having the first boss part; and a third case body having the third boss part. The first case body is integrally formed by forging. The second case body is integrally formed by forging. The third case body is integrally formed by forging. The first case body and the second case body are joined to each other by welding. The first case body and the third case body are joined to each other by welding. | 08-27-2009 |
20090165297 | Method of forming cam shaft - The present invention relates to a method of forming a cam shaft by assembling a preliminary shaft ( | 07-02-2009 |
20090088286 | DIFFERENTIAL GEAR - In a differential gear, a differential case includes: a first differential case on a side ranging from a pinion-shaft installation part on which a pinion shaft is installed, to a ring gear; and a second differential case on a side opposite to the side ranging from a pinion-shaft installation part on which the pinion shaft is installed, to the ring gear. The first differential case is integrally molded from only a low-carbon steel containing less than 0.45% of C, by forging or by forging and cutting. The second differential case is integrally molded from only a low-carbon steel containing less than 0.45% of C, by forging or by forging and cutting. The first differential case and the second differential case are bonded to each other by welding. | 04-02-2009 |