A Multiple-Tool Approach to Rough Machining of Sculptured Surfaces

Lin, Alan C.; Gian, R.

doi:10.1007/s001700050081

Cited by 24 publications

(17 citation statements)

References 6 publications

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“…Lin and Gian selected the largest tools to optimize overall machining time [14]. Krimpenis and Vosniakos approached this goal with genetic algorithm (GA) to discover optimal sequences after 3000 evaluations [15].…”

Section: Tool Selectionmentioning

confidence: 99%

A geometry search approach in case-based tool reuse for mould manufacturing

Zhou

Liu

et al. 2015

Int J Adv Manuf Technol

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Similar freeform surfaces are widely adopted in product family or different generations. Manufacturing of these surfaces with efficiency is essential to competitiveness of the company. Conventionally, milling tools were chosen mainly by experience; therefore, reuse of existing experience is essential to advanced manufacturing. This paper proposed a novel geometry search approach to recommend tool selection for review and reuse based on previous cases. First, a hierarchical representation is extracted from freeform meshes. Then, qualitative and quantitative properties were defined to support matching and comparison in the level of detail. Geometry search algorithm is then adapted with boundary condition to find best sequence of tools, where existing cases were stored in layered slices along with their tool information, and new case of cavity is explored in a sequence to progressively find the best match of each layer. Finally, retrieved tools were adapted to review and assist for process planners. A prototype system and a case study are provided to demonstrate the proposed method.

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Section: Tool Selectionmentioning

confidence: 99%

A geometry search approach in case-based tool reuse for mould manufacturing

Zhou

Liu

et al. 2015

Int J Adv Manuf Technol

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“…Lin and Gian [18] discussed the concept of multicutters. This involves examining cutter data and the characteristics of each slice to determine the applicable cutter for each slice.…”

Section: Slicing and Generating The Multi-nozzle Pathmentioning

confidence: 99%

Multi-nozzle spraying path generation directly from scanned data for rapid prototyping

Liang¹,

Lin

2004

The International Journal of Advanced Manufacturing Technology

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This study aims to build a triangular-mesh model directly from scanned 3D data points, which then generate the stereolithography (STL) file, thus avoiding the troublesome task of producing a CAD model. Accuracy of the triangular-mesh model is achieved because the pitch between data points is generally very small. In addition, the paper proposes a multi-nozzle path algorithm to increase both spraying efficiency and part accuracy. The processing procedure includes: (1) Establishing the triangular-mesh model from scanned data points, which are retrieved by means of contact-or non-contact type measuring machines as well as developing the algorithm to add the radius of the probe automatically.(2) Equally slicing the triangular-mesh solid model and plan spraying paths. (3) Determining the amount and diameter of nozzles appropriate for each slice to generate multi-nozzle spraying paths.

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“…In generating CC points for the NC tool path, step length and path interval are the primary concerns in meeting the requirement of path interpolation [10,11,12]. These factors are discussed below.…”

Section: Generating the Nc Tool Pathmentioning

confidence: 99%

“…The CC points needed for NC machining are determined following the iso-parametric method [10,11,12] once the equations for step length and path interval have been determined. Figure 9 illustrates the basic procedure.…”

Section: Generating the Nc Tool Pathmentioning

confidence: 99%

“…(1) Determine checking points The iso-parametric method is applied to convert the cavity surface to be machined into discrete data points [10,11,12]. The following two types of error that affect the distribution of the points are taken into account-one is produced in the area of contact between the tool's tip and the surface for machining, and the other in the area of contact between the tool's spindle and the to-be-machined surface, as illustrated in Fig.…”

Section: Correction Of Tool Orientationmentioning

confidence: 99%

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Planning of tool orientation for five-axis cavity machining

Gian

Lin

2003

Int J Adv Manuf Technol

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This study examines the feasibility of using open regions and vector fields to determine the appropriate tool orientation in five-axis NC machining of cavity regions with undercut areas. The first step involves slicing the to-be-machined surface into thin layers and then comparing those layers to find the position of the undercut; that is, the position of open region. Twostaged checking is proposed to determine the tool orientation that prevents collision. The two stages are initial tool orientation and collision inspection. An initial tool orientation is obtained by assessing the angle of the vectors determined by data points of contours of the open region and cutter contact (CC) points. If a collision is found in the initial orientation, then the tool orientation must be revised until no obstacles are generated from the collision.

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A Multiple-Tool Approach to Rough Machining of Sculptured Surfaces

Cited by 24 publications

References 6 publications

A geometry search approach in case-based tool reuse for mould manufacturing

A geometry search approach in case-based tool reuse for mould manufacturing

Multi-nozzle spraying path generation directly from scanned data for rapid prototyping

Planning of tool orientation for five-axis cavity machining

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