Feed unit
US10449647B2 · kind B2 · utility
1Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2015 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Feb 14, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q11/0032
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A feed unit for drilling and/or tapping comprising a housing, a quill in the housing movable between retracted and extended positions, the quill rotationally supporting a spindle for carrying a rotary tool, a screw for moving the quill between said positions, a ball spline shaft in the housing coaxial with the spindle, a ball spline nut having recirculating steel balls rolling in raceways on the ball spline shaft, the spindle radially supporting the ball spline shaft within the quill with zero clearance through the ball spline nut, rotation of the ball spline shaft being imparted to the spindle through the ball spline nut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.