Patent · US Active

Estimation of deflection of a cutting edge

US11285543B2 · kind B2 · utility

2Cited by

10References

14Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Dan Ostling · Trondheim, NO
Tormod Jensen · Trondheim, NO
Mathias Tjomsland · Trondheim, NO
Oddvar Standal · Trondheim, NO
Ole Henrik Johansen · Trondheim, NO
Arnt Erik Reinsbakk · Trondheim, NO

Key dates

Filing date	Aug 24, 2017
Grant date	Mar 29, 2022
Priority date	—
Expiry date	Aug 26, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23Q2717/003
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A cutting tool, a turning machine including the cutting tool, and an associated method are provided. The cutting tool includes a tool, a cutting head, a strain gauge, and an accelerometer. The cutting head is located at the tool bar and has a cutting edge. The strain gauge measures strain at the tool bar. The accelerometer measures acceleration at the tool bar or the cutting head. Deflection of the cutting edge is estimated based on output from the strain gauge and the accelerometer. In some embodiments, the accelerometer is arranged close to the cutting edge, while the strain gauge is arranged where the tool bar is susceptible to the largest strain. In some embodiments, low frequency vibrations of the cutting edge are estimated based on measured strain, high frequency vibrations are estimated based on measured acceleration, and medium frequency vibrations are estimated based on output from both sensor types.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.