Analysis of geometric errors associated with five-axis machining centre in improving the quality of cam profile

Jha, Bharat; Kumar, Anjani

doi:10.1016/s0890-6955(02)00268-7

Cited by 59 publications

(33 citation statements)

References 9 publications

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“…Furthermore, the various methods for modeling the geometric errors from different perspectives have experienced a gradual development [7]. To describe the error of the cutter location and the tool orientation between the two kinematic chains, the error model is normally established using homogeneous transformation sciENcE aNd tEchNology matrices (HTM) [10,18,20], denavit-hartenberg (D-H) method [16], modified denavit-hartenberg (MD-H) method [19], or multi-body system (MBS) theory [31,32]. Among these different approaches, MBS theory, first proposed by Houston, has evolved into the best method for the modeling of geometric errors of machine tools because it provides for a simple and convenient method to describe the topological structure of an MBS [21].…”

Section: Volumetric Error Modelmentioning

confidence: 99%

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A method to analyze the machining accuracy reliability sensitivity of machine tools based on Fast Markov Chain simulation

Cheng¹,

Sun²,

Zhao³

et al. 2016

EiN

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Section: Volumetric Error Modelmentioning

confidence: 99%

“…As shown in Eqs. (10) to (16), only 3 M , 5 M , 6 M and 7 M are related to the machining accuracy reliability of the machine center in Z-direction. As shown in Table 9, the failure probabilities of 3 M and 6 M are greater than the failure probabilities of 5 M and 7 M .…”

mentioning

confidence: 99%

A method to analyze the machining accuracy reliability sensitivity of machine tools based on Fast Markov Chain simulation

Cheng¹,

Sun²,

Zhao³

et al. 2016

EiN

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show abstract

“…• Error due to the placement of locators [5][6][7][8] • Geometric/form defects of the workpiece [9][10][11][12] • Errors due to deformation of locators [13][14][15][16][17][18] • Kinematic defects/ machine tool errors [19][20][21][22][23][24][25][26] • Misc. errors due to tool wear, heat, NC codes, etc… Fig.…”

Section: Positioning Errorsmentioning

confidence: 99%

A Kinematic Approach for 6-DOF Part Positioning

Butt

Antoine²,

Martin

2013

Lecture Notes in Production Engineering

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Abstract. This article proposes a fixturing system consists of a cuboid baseplate located through a 3-2-1 configuration of locators. The locators are mounted on machine table/pallet and posses one axial DOF. The workpiece is mounted on the baseplate and all the elements are assumed to be rigid with zero friction. The positioning error of the workpiece is calculated and the compensation is performed by the axial movement of the locators. The proposed analytical model is verified by the simulation performed in the CAD model.

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“…Jha and Kumar [9] used a generalized volumetric error model of a five-axis machine based on D-H transformation matrix for geometric error compensation, which improved the quality of the CAM profile creation experiment. Lei and Hsu [10] reported another test ball measurement device that helps directly measure the overall position errors of a five-axis machine tool.…”

Section: Introductionmentioning

confidence: 99%

Volumetric Error Compensation in Five-Axis CNC Machining Center Through Kinematics Modeling of Geometric Error

Pashaki

Pouya²

2016

Adv. Sci. Technol. Res. J.

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Accuracy of a five-axis CNC machine tool is affected by a vast number of error sources. This paper investigates volumetric error modeling and its compensation to the basis for creation of new tool path for improvement of work pieces accuracy. The volumetric error model of a five-axis machine tool with the configuration RTTTR (tilting head B-axis and rotary table in work piece side A΄) was set up taking into consideration rigid body kinematics and homogeneous transformation matrix, in which 37 error components are included. Volumetric error comprises 37 error components that can separately reduce geometrical and dimensional accuracy of work pieces. The machining accuracy of work piece is guaranteed due to the position of the cutting tool center point (TCP) relative to the work piece. The cutting tool is deviated from its ideal position relative to the work piece and machining error is experienced. For compensation process detection of the present tool path and analysis of the RTTTR fiveaxis CNC machine tools geometrical error, translating current position of component to compensated positions using the Kinematics error model, converting newly created component to new tool paths using the compensation algorithms and finally editing old G-codes using G-code generator algorithm have been employed.

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Analysis of geometric errors associated with five-axis machining centre in improving the quality of cam profile

Cited by 59 publications

References 9 publications

A method to analyze the machining accuracy reliability sensitivity of machine tools based on Fast Markov Chain simulation

A method to analyze the machining accuracy reliability sensitivity of machine tools based on Fast Markov Chain simulation

A Kinematic Approach for 6-DOF Part Positioning

Volumetric Error Compensation in Five-Axis CNC Machining Center Through Kinematics Modeling of Geometric Error

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