Cutter of a boring head, hub for the cutter and method of manufacturing such a hub
US5507355A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1994 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Jul 22, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49995
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention refers to a cutter (10;10') of a boring head, said cutter (10;10') being rotatably mounted, via a shaft (11;11') of the cutter, in a saddle secured to the boring head, a roller bearing means being located between the shaft (11;11') and a hub (18;18'), means (23;23'a,23'b) for axially locking the roller bearing means relative to the shaft (11;11') and sealing arrangements between the hub (18;18') and the locking means (23;23'a,23'b), said roller bearing means including at least one inner race (12;12'a,12'b) that is mounted on the shaft (11;11') and a set of tapered rollers (15;15'a,15'b) mounted in an outer circumferential recess (13;13'a,13'b) of the inner race (12;12'a,12'b), said hub (18;18') being rotatable relative to the shaft (11;11') via said roller bearing means, said rotatable hub (18;18') carrying rock working means (20;20'). The invention also refers to a hub (18;18') per se and a method of manufacturing a hub (18;18'). There is always a need to improve the bearing capacity of cutters of the above-mentioned type. An improved bearing capacity means that higher feeding forces can be applied upon the boring head, said higher feeding force will give an …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.