Active tailstock for precise alignment of precision forged crankshafts during grinding

Show simple item record

dc.identifier.uri Denkena, Berend Gümmer, Olaf 2016-12-22T11:22:36Z 2016-12-22T11:22:36Z 2013
dc.identifier.citation Denkena, B.; Gümmer, O.: Active tailstock for precise alignment of precision forged crankshafts during grinding. In: Procedia CIRP 12 (2013), S. 121-126. DOI:
dc.description.abstract Within the Collaborative Research Centre 489 at the Leibniz Universitaet Hannover a new and innovative process chain for the manufacture of crankshafts is being investigated. By burr-free and near-net-shaped precision forging the process chain can be significantly shortened. However, this new production process requires a precise workpiece alignment before the grinding process due to the characteristics of the new process chain. In this paper a new machine-integrated positioning system consisting of an optical measurement system (sensor) and an active tailstock (actuator) is presented. For the detection of positioning errors, the geometric elements of the crankshaft are measured by the machine integrated optical measurement system. An algorithm evaluates the geometry data and calculates an adjustment vector. This vector contains the correction of the eccentric and tilt error. The degree of freedom (DOF) of the pendulum stroke of the grinding machine will be used to correct the eccentric error. The tilt error of the crankshaft is corrected by a new active tailstock. This tailstock produces a counter-tilt during the grinding process. For this purpose, a dynamic drive of the tailstock center in two DOF as a function of the angular position has been realized by two new developed piezo-hydraulic linear drives (stroke 4 mm). The dynamics and positioning accuracy of the active tailstock were verified. Up to 10 Hz a positioning accuracy in the range of ±1.5 μm can be achieved by using an iterative learning control. Furthermore, active alignment tests during grinding were performed. eng
dc.language.iso eng
dc.publisher Amsterdam : Elsevier
dc.relation.ispartof 8th CIRP International Conference on Intelligent Computation in Manufacturing Engineering, ICME 2012, 18-20 July 2012, Ischia, Italy
dc.relation.ispartofseries Procedia CIRP 12 (2013)
dc.rights CC BY-NC-ND 3.0
dc.subject Adaptive control eng
dc.subject Grinding eng
dc.subject Machine eng
dc.subject Adaptive Control eng
dc.subject Collaborative research eng
dc.subject Degree of freedom (dof) eng
dc.subject Iterative learning control eng
dc.subject Optical measurement systems eng
dc.subject Positioning accuracy eng
dc.subject Positioning system eng
dc.subject Workpiece alignment eng
dc.subject Alignment eng
dc.subject Chains eng
dc.subject Digital storage eng
dc.subject Grinding (machining) eng
dc.subject Hydraulic machinery eng
dc.subject Industrial engineering eng
dc.subject Machining eng
dc.subject Navigation systems eng
dc.subject Optical data processing eng
dc.subject Optical variables measurement eng
dc.subject Crankshafts eng
dc.subject.ddc 600 | Technik ger
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Active tailstock for precise alignment of precision forged crankshafts during grinding
dc.type article
dc.type conferenceObject
dc.type Text
dc.relation.issn 22128271
dc.bibliographicCitation.volume 12
dc.bibliographicCitation.firstPage 121
dc.bibliographicCitation.lastPage 126
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

Files in this item

This item appears in the following Collection(s):

Show simple item record


Search the repository


My Account

Usage Statistics