METHOD AND APPARATUS FOR CALIBRATING CRANKSHAFT TO BE PROCESSED

WIPO Patent Application WO/2023/087206

A1

A method for calibrating a crankshaft (10) to be processed is disclosed. The method comprises: causing a positioner (40) to rotate to at least three different angles, wherein the positioner (40) is configured to support the crankshaft (10) and drive the crankshaft (10) to rotate; causing, for each of the at least three different angles, a probe (20) arranged on a robot (30) to touch a plurality of points on a first cylindrical crankpin (101) of the crankshaft (10) respectively to obtain coordinates of the plurality of points in a robot coordinate system; fitting, for each of the at least three different angles, the coordinates of the plurality of points on the first cylindrical crankpin (101) respectively to obtain a respective pose of the first cylindrical crankpin (101) relative to the robot coordinate system; and determining a pose of a rotating axis of the crankshaft (10) relative to the robot coordinate system based on the respective pose of the first cylindrical crankpin (101). The pose of the rotating axis of the crankshaft (10) can be calibrated quickly and accurately. An apparatus for calibrating a crankshaft (10) to be processed is also disclosed.

XIA DIANFEI (CN)
CHANG KUN (CN)
WANG JIACHENG (CN)

PCT/CN2021/131452

May 25, 2023

November 18, 2021

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ABB SCHWEIZ AG (CH)
XIA DIANFEI (CN)
CHANG KUN (CN)
WANG JIACHENG (CN)

B24B5/42; B24B1/00; B24B49/00

CN103909473A	2014-07-09
CN102198634A	2011-09-28
CN104070453A	2014-10-01
CN106312711A	2017-01-11
CN112706016A	2021-04-27
CN206780075U	2017-12-22
US5943893A	1999-08-31
JPH10337660A	1998-12-22

KING & WOOD MALLESONS (CN)

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