Process-informed machining objects for closed-loop process planning

Wosnik, Michael; Rüdele, H.; Klemm, Peter

doi:10.1080/09511920902741109

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…Kumar et al proposed an operational structure of STEP-NC compliant process control framework for discrete components and incorporated three types of process control in order to close the manufacturing loop [7]. Wosnik et al presented a STEP-NC compliant information model and process chain architecture to realize optimization of machining processes [8]. Kumar et al presented information models for machine tool process control by using STEP-NC standard to represent the information in manufacturing CAx chain [9].…”

Section: Related Work On Clms and Step-nc Controllermentioning

confidence: 99%

Architecture and implementation of closed-loop machining system based on open STEP-NC controller

Han

et al. 2015

Int J Adv Manuf Technol

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Effective approach of collecting, transmitting, and handling complete product manufacturing information during machining process is necessary for realizing high efficiency manufacturing. In this paper, the architecture and implementation of closed-loop machining system (CLMS) is discussed and the method of realizing machining process control is introduced. An integrated information flow is built based on object-oriented description method to transfer complete product manufacturing information in CLMS. The functional and informational model of CLMS is established by using integration definition method. Online and real-time machining process control is implemented on an open STEP-NC controller which is collecting and analyzing information of machining process condition and inspection results during machining process. The software kernel of CNC controller implemented on a computer platform integrates with machine tool, sensors, and probe for real-time data collecting and online inspection. Finally, test parts are machined and inspected to verify the proposed machining process control method and open STEP-NC controller.

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Section: Related Work On Clms and Step-nc Controllermentioning

confidence: 99%

Architecture and implementation of closed-loop machining system based on open STEP-NC controller

Han

et al. 2015

Int J Adv Manuf Technol

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“…They also proposed a STEP-NC data model for on-machine dimensional measurement and system structure for integrated process planning and feedback [13]. Wosnik et al presented a structured STEP-NC model for describing machining process data and built a process chain framework to optimize machining process [14]. Ridwan et al proposed an architecture for machining condition monitoring based on STEP-NC in order to optimize feed-rate of CNC machining [15].…”

Section: Introductionmentioning

confidence: 99%

The Architecture, Methodology and Implementation of STEP-NC Compliant Closed-Loop Robot Machining System

Guo

et al. 2022

IEEE Access

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Industrial robots are gradually being employed in machining processes, particularly the cutting process, owing to their flexibility, mobility, and economic efficiency. However, it is difficult to make the manufacturing process intelligent owing to the complexity of robot machining process information handling and programming. In this paper, the architecture of a STEP-NC compliant closed-loop robot machining system was designed, including its function model and information stream. A methodology based on STEP-NC was established to enable the analysis of high-level information directly and automatically generating robot program according to the actual machining conditions. The STEP-NC Application Activity Model (AAM) and Application Reference Model (ARM) of closed-loop robot machining system is built to integrate the machining process data, monitoring and inspection data, mechanical equipment data, machining status data and inspection result data within a unified data flow, making it possible to realize intelligent manufacturing and adaptively adjusting the robot machining process. The proposed closed-loop robot machining system was implemented based on an open STEP-NC interpreter that interprets the high level information in STEP-NC directly to reduce machining robot programming time. An industrial camera was integrated with the robot for rawpiece positioning, then the STEP-NC interpreter can generate robot path rapidly according to the parameters of manufacturing features and position of rawpiece. The STEP-NC interpreter can generate a robot control program or communicate with a software controller using an application program interface, so it can be integrated with both existing industrial robot controllers and future open robot controllers. Finally, case studies are conducted for the functional verification of the proposed STEP-NC compliant closed-loop robot machining system.

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“…Then the traceability interface for STEP-NC is defined and associated with other standards such as ISA-95 and MTConnect to support traceability activities in collaborative manufacturing scenario [12]. Wosnik et al presented a STEP-NC-compliant data model and process chain architecture for the optimization of machining process based on feedback process data [13]. Kumar et al established the information models and implementation mechanism for machine tool process control based on STEP-NC [14].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Real-Time Machining Process Control Based on Fuzzy Logic in a New STEP-NC Compatible System

Han

et al. 2016

Mathematical Problems in Engineering

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Implementing real-time machining process control at shop floor has great significance on raising the efficiency and quality of product manufacturing. A framework and implementation methods of real-time machining process control based on STEP-NC are presented in this paper. Data model compatible with ISO 14649 standard is built to transfer high-level real-time machining process control information between CAPP systems and CNC systems, in which EXPRESS language is used to define new STEP-NC entities. Methods for implementing real-time machining process control at shop floor are studied and realized on an open STEP-NC controller, which is developed using object-oriented, multithread, and shared memory technologies conjunctively. Cutting force at specific direction of machining feature in side mill is chosen to be controlled object, and a fuzzy control algorithm with self-adjusting factor is designed and embedded in the software CNC kernel of STEP-NC controller. Experiments are carried out to verify the proposed framework, STEP-NC data model, and implementation methods for real-time machining process control. The results of experiments prove that real-time machining process control tasks can be interpreted and executed correctly by the STEP-NC controller at shop floor, in which actual cutting force is kept around ideal value, whether axial cutting depth changes suddenly or continuously.

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Process-informed machining objects for closed-loop process planning

Cited by 6 publications

References 15 publications

Architecture and implementation of closed-loop machining system based on open STEP-NC controller

Architecture and implementation of closed-loop machining system based on open STEP-NC controller

The Architecture, Methodology and Implementation of STEP-NC Compliant Closed-Loop Robot Machining System

Implementation of Real-Time Machining Process Control Based on Fuzzy Logic in a New STEP-NC Compatible System

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