Title:
歯車研削用複層砥石
Document Type and Number:
Japanese Patent JP7298100
Kind Code:
B2
Abstract:
Provided is a double-layer grindstone for gear grinding with which a grinding speed or a grinding efficiency can be achieved without lowering an upper limit of the peripheral speed for grinding, i.e., the fracture peripheral speed.In a double-layer grindstone 12 for gear grinding provided with a rough processing portion 52 and a finish processing portion 54, only an end face of a first core 52a and an end face of a second core 54a are bonded to each other in a state in which a rough processing grindstone 52b and a finish processing grindstone 54b are not bonded to each other. Therefore, a fracture strength comparable to that in the case in which the rough processing portion 52 and the finish processing portion 54 are used individually can be obtained, grinding can be carried out with a comparable rotation speed, and the grinding efficiency can be improved. In addition, since the end face of the first core 52a and the end face of the second core 54a are bonded to each other, it is possible to accurately align the phases of screw threads which are formed respectively in an outer peripheral surface of the rough processing portion 52 and an outer peripheral surface of the finish processing portion 54. Consequently, the time required for dressing can be reduced and the grinding efficiency can thus be further improved.
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Inventors:
Takamasa Ishizawa
Yusuke Oura
Yuji Fujita
Mitsufumi Hashimoto
Yusuke Oura
Yuji Fujita
Mitsufumi Hashimoto
Application Number:
JP2019157444A
Publication Date:
June 27, 2023
Filing Date:
August 29, 2019
Export Citation:
Assignee:
Noritake Company Limited
Nippon Resin Co., Ltd.
Nippon Resin Co., Ltd.
International Classes:
B23F21/02; B24D3/14; B24D3/28; B24D5/14; B24D7/02; B24D7/04; B24D7/18
Domestic Patent References:
| JP60138615U | ||||
| JP50027636B1 | ||||
| JP2019119040A | ||||
| JP49098883U | ||||
| JP2012152882A | ||||
| JP2010105126A | ||||
| JP8276365A | ||||
| JP62074526A | ||||
| JP2015016522A |
Foreign References:
| WO2018049204A1 | ||||
| WO2007077675A1 |
Attorney, Agent or Firm:
Haruyuki Ikeda
Kojiro Ikeda
Kojiro Ikeda