1.17 Review of Miniature Gear Manufacturing

Jain, Neelesh Kumar; Chaubey, Sujeet Kumar

doi:10.1016/b978-0-12-803581-8.09159-1

Cited by 17 publications

(19 citation statements)

References 22 publications

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“…One trend in today's industry is the miniaturization of technical systems with electronic and mechanical functions. This includes miniaturized drive systems which are used in large numbers; for example, in the automotive industry, mechanical engineering, aerospace technology, medical technology, the watch industry and in robotics [1]. Due to high production volumes, the use of productive manufacturing processes is of great economic importance.…”

Section: Introductionmentioning

confidence: 99%

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Forming of Components with Microgearings from Coil Material—Numerical Modeling of the Process Chain and Experimental Validation

2021

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Compared to alternative production methods, cold forming offers technological, economic and ecological potential for the mass production of microgears. Within the current boundaries of the technology, the cold forming of modules m < 0.2 mm is not possible due to size effects, high tool stresses and handling problems. The investigations of this contribution present a novel process chain for the multi-step forming of microgears with a module of m = 0.1 mm. For this purpose, a numerical model of the first two steps of the process chain is set up and confirmed based on experimental forming tests. The results have proven the feasibility of the process chain by a complete forming of the gear teeth.

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Section: Introductionmentioning

confidence: 99%

“…Moreover, long process times reduce the application in mass production [4]. With cutting, the obtainable gear width is restricted, and for hobbing processes producible geometries are limited and no internal gears or conical gears can be produced [1].…”

Section: Introductionmentioning

confidence: 99%

Forming of Components with Microgearings from Coil Material—Numerical Modeling of the Process Chain and Experimental Validation

2021

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“…It is a key element in motion and/or power transmission devices irrespective of their sizes. Small size gears, generally known as miniature gears are extensively used in appliances, scientific instruments, equipment, and speed reducers [1,2]. Plastics, brass, stainless steel, and bronze are most common materials for small gear manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Fabrication of SS316 Gear by Wire-EDM

Gupta

2021

MATEC Web Conf.

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Manufacturing of miniature gears with good accuracy and quality, and at low cost is a challenging task for traditional manufacturing processes. Wire-cut electric discharge machining (WEDM) has the capacity to machine any conductive material to fabricate typical shaped products like gears with high level of accuracy and quality. In present research, stainless steel (SS) alloy 316 is used to fabricate miniature gears by WEDM. The experimental array is designed according to Response Surface Methodology (RSM) based central composite face centered (CCFC). Four input parameters namely servo feed (SF), duty factor (DF), servo voltage (SV) and wire feed (WF) with three levels each are used for experimental array to investigate the process performance in terms of cutting rate (CR), and product i.e. gear quality in terms of mean roughness depth (Rz) and dimensional deviation (DD). After WEDM parameter optimization, confirmation experiments are performed at the parametric setting by considering equal importance to all response variables. A very close agreement between the experimental and predicted values have been observed.

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“…unable to deal with variety of materials), and necessitates the assistance of secondary finishing operations to attain high-quality requirements. [3][4][5] This compels to explore and develop a sustainable alternate for cost-efficient manufacturing of quality gears.…”

Section: Introduction and Background Workmentioning

confidence: 99%

Investigations on surface roughness and tribology of miniature brass gears manufactured by abrasive water jet machining

Phokane

Gupta

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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Surface roughness parameters are important indicators for determining the operating performance, tribology behavior, wear and tear characteristics, and service life of engineered parts including gears. This article presents the investigation on surface roughness, and tribology and wear aspects of miniature brass gears manufactured by abrasive water jet machining. Experiments have been conducted based on Taguchi's robust design technique with L9 orthogonal array to machine external spur-type miniature gears of brass having 8.4 mm pitch diameter, 12 teeth, and 5 mm thickness. The effect of three important process parameters namely water jet pressure, abrasive mass flow rate, and stand-off distance on mean roughness depth of miniature gears are analyzed. Surface roughness is found to decrease with the increase in the water jet pressure and abrasive mass flow rate, and increases with the increase in the stand-off distance. Particle swarm optimization technique has been used for parametric optimization to minimize the surface roughness of miniature gears. Confirmation experiment conducted at optimized abrasive water jet machining parameters resulted in superfine surface finish with mean roughness depth value of 4.1 µm superior than the finish obtained by other advanced processes for brass gears. The investigated values of bearing area characteristics, skewness, kurtosis, and friction coefficient confirm the tribological fitness of the miniature brass gear machined at optimum abrasive water jet machining parameters.

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1.17 Review of Miniature Gear Manufacturing

Cited by 17 publications

References 22 publications

Forming of Components with Microgearings from Coil Material—Numerical Modeling of the Process Chain and Experimental Validation

Forming of Components with Microgearings from Coil Material—Numerical Modeling of the Process Chain and Experimental Validation

Investigation on Fabrication of SS316 Gear by Wire-EDM

Investigations on surface roughness and tribology of miniature brass gears manufactured by abrasive water jet machining

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