| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_80ea019a11b415b0198345099a2642fd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9c480b3c4d2d21798190a872d4e2e29d |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21J5-008
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21J13-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21K21-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16C2220-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23P15-003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21J5-025 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16C33-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16C19-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21K21-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21K1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21J13-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16C19-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21K1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21K21-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16C33-64 |
| filingDate |
2016-07-19^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_91f58210398017e6e07c0cb41b8b88df
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ee4178264fe6c357ac1aab8da63771c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1617b55b5769f74edf9913b9c12e974
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_803811f0f9d4cada039f767598c7c8e5 |
| publicationDate |
2018-01-25^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2018012109-A |
| titleOfInvention |
Method for manufacturing cylindrical ring member |
| abstract |
A manufacturing method capable of improving the shape accuracy of a chamfered portion formed on the peripheral edge of an axial end portion of a cylindrical portion is realized. SOLUTION: First and second preliminary R chamfered portions 36, 37 are formed on the inner peripheral edges of both axial end portions of a small diameter cylindrical portion 46 constituting a third intermediate material 23. Thereafter, the first regular R chamfering surface 55 provided on the die spin 27a and the second regular R chamfering surface 60 provided on the punch 28b at the radially inner ends of both end surfaces in the axial direction of the small diameter cylindrical portion 46. Are respectively pressed in the axial direction to form first and second regular R chamfered portions 61 and 62 at the inner peripheral edges of both ends in the axial direction of the small diameter cylindrical portion 46. The radial width dimensions (cross-sectional curvature radii R1, R2) of the first and second preliminary R chamfered portions 36, 37 are the radial widths of the first and second regular R chamfered surfaces 55, 60, respectively. It is set to be larger than the dimension (the radius of curvature r1, r2 of the cross-sectional shape). [Selection] Figure 4 |
| priorityDate |
2016-07-19^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |