Hybrid cutting simulation via discrete vector model

We present an optimal cutter location (CL) data computation for face-milling of large marine propellers composed of CL point optimization and CL path optimization on a given tool path. The CL point optimization at a single cutter contact (CC) point is conducted by maximizing the effective radius of the face milling cutter, while the CL path optimization on a series of CC points is performed by conforming deviation of the tool-swept surface from the design surface between consecutive CL data to a given machining tolerance. The proposed algorithm was implemented and applied to the machining of a large marine propeller which proved effective from a quantitative point of view, and is used on the shop floor in a Korean ship building company.

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“…21 The overall TSS of a tool path is a union of total TSS i from CC i-1 to CC i . Figure 5 shows a sample TSS.…”

Section: Tool Swept Surfacementioning

confidence: 99%

Near net-shape five-axis face milling of marine propellers

Park

Lee²,

Jun

2009

Int. J. Precis. Eng. Manuf.

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“…For the workpiece model, a hybrid workpiece model which consists of the general discrete vector model and its simplified model is proposed to perform a cutting simulation (4) .…”

Section: Related Workmentioning

confidence: 99%

“…2, No. 4,2008 In STEP data structure, entity 'product_definition' is used to define the product and the 'product_definition' has the 'property_definition' which defines the property of the product such as shape and kinematics. The 'property_definition' is related to the entity 'representation' which specifies the corresponding representation of the 'property_ definintion' by the entity 'product_definition_representation.'…”

Section: Journal Of Advanced Mechanical Design Systems and Manufactmentioning

confidence: 99%

Development of a Digital Machining Information Model to Support a Real-Virtual Machining System

Matsuda

Tanaka

Onosato

et al. 2008

JAMDSM

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In a machining system using computer numerical control (CNC) machine tools, detailed models of machining information are necessary to simulate detailed machining and to control the complex motion of machine tools. However, existing machining information models lack the necessary information and are described in their own formats. Consequently, many models which include the same information exist. Moreover various simulations for a virtual machining system and adaptive control for a real machining system are inacculate. To solve these problems, a digital machining information (DMI) model to support a real-virtual machining system is proposed in this study.

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“…In this method, the workpiece was discretized into a set of evenly distributed discrete zdirection vectors (ZDV). The Z-map or dexel can be thought of as a special type of discrete vector model or a discrete vector [11][12][13][14][15][16][17]. Solid modeling yields more accurate information but requires significantly more computation time.…”

Section: Introductionmentioning

confidence: 99%

A hybrid analytical- and discrete-based methodology for determining cutter-workpiece engagement in five-axis milling

Kiswanto

Hendriko

Duc

2015

Int J Adv Manuf Technol

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This paper presents a new method to determine the cutter-workpiece engagement (CWE) for a toroidal cutter during free-form surface machining in five-axis milling. A hybrid method, which is a combination of a discrete model and an analytical approach, was developed. Although the workpiece surface was discretized by a number of normal vectors, there was no calculation to determine the intersection between the normal vector and the cutting tool. The normal vectors were used to define the workpiece surface mathematically; next, the engagement point was calculated using a combination of the workpiece surface equation, the parametric equation of the cutting tool, and the tool orientation data. Three model parts with different surface profiles were tested to verify the validity of the proposed method; the results indicated that the method was accurate. The method also eliminated the need for a large number of discrete vectors to define the workpiece surface. A comparison showed that the proposed method was computationally more efficient. The CWE model was subsequently applied to support the cutting force prediction model. A validation test demonstrated that in terms of trends and amplitudes, the predicted cutting forces exhibit good agreement with the cutting force generated experimentally.

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Hybrid cutting simulation via discrete vector model

Cited by 32 publications

References 13 publications

Near net-shape five-axis face milling of marine propellers

Near net-shape five-axis face milling of marine propellers

Development of a Digital Machining Information Model to Support a Real-Virtual Machining System

A hybrid analytical- and discrete-based methodology for determining cutter-workpiece engagement in five-axis milling

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