Technological and Simulative Analysis of Power Skiving

Klocke, Fritz; Brecher, Christian; Löpenhaus, Christoph; Ganser, Philipp; Staudt, J.; Krömer, Markus

doi:10.1016/j.procir.2016.05.052

Cited by 33 publications

(16 citation statements)

References 4 publications

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“…One example of this is the power skiving technology as an efficient method for producing internal high-precision gears, as investigated by Inui et al [ 19 ]. Klocke et al [ 20 ] presented an analysis of the influence of geometrical parameters for the power skiving method on the quality of the manufactured gear. In the process of this machining method, a very important role is played by the visualization of the resulting machining shape, whereby we can precisely analyze the changes in the shape of the gear during the machining process, as well as the volume of the workpiece material removed, as noted by McCloskey et al [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Study of Machining of Gears with Regular and Modified Outline Using CNC Machine Tools

Gołębski

Boral

2021

Materials

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Classic methods of machining cylindrical gears, such as hobbing or circumferential chiseling, require the use of expensive special machine tools and dedicated tools, which makes production unprofitable, especially in small and medium series. Today, special attention is paid to the technology of making gears using universal CNC (computer numerical control) machine tools with standard cheap tools. On the basis of the presented mathematical model, a software was developed to generate a code that controls a machine tool for machining cylindrical gears with straight and modified tooth line using the multipass method. Made of steel 16MnCr5, gear wheels with a straight tooth line and with a longitudinally modified convex-convex tooth line were machined on a five-axis CNC milling machine DMG MORI CMX50U, using solid carbide milling cutters (cylindrical and ball end) for processing. The manufactured gears were inspected on a ZEISS coordinate measuring machine, using the software Gear Pro Involute. The conformity of the outline, the tooth line, and the gear pitch were assessed. The side surfaces of the teeth after machining according to the planned strategy were also assessed; the tests were carried out using the optical microscope Alicona Infinite Focus G5 and the contact profilographometer Taylor Hobson, Talysurf 120. The presented method is able to provide a very good quality of machined gears in relation to competing methods. The great advantage of this method is the use of a tool that is not geometrically related to the shape of the machined gear profile, which allows the production of cylindrical gears with a tooth and profile line other than the standard.

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Section: Introductionmentioning

confidence: 99%

Study of Machining of Gears with Regular and Modified Outline Using CNC Machine Tools

Gołębski

Boral

2021

Materials

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“…This work is focused on one of the factors, the chips generated while forming gear teeth by power skiving [ 19 , 20 ], an increasingly popular tooth forming technique in the industry, capable of significantly improving machine cutting efficiency in comparison to the Fellows process, for example.…”

Section: Introductionmentioning

confidence: 99%

“…In skiving, it is the angle that generates the cutting speed, the vector of which depends on the vectors of tangential velocity of the workpiece and the tangential velocity of the cutting tool. The dependencies of skiving kinematics, the specifics of skiving, and the requirements of skiving are discussed further by the authors of [ 19 , 20 , 21 , 22 , 23 , 24 , 25 ], for example. A significant factor which must always be considered in any approach to skiving is the inclination angle Σ ( Figure 1 ), the optimum value of which is approximately 20°, for effective machining efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Given the potential for the effect to occur, as described in [ 19 , 20 ], for example, research was undertaken to determine the effect of binding a chip, generated during machining of power skiving method to tooth surfaces, seen as a specific foreign object, on the properties characteristic of the case hardening of gears made of Pyrowear ® 53 steel. The described case can be dangerous, especially for gears utilized in aircraft gearboxes, which must meet stringent reliability demands that translate directly into flight safety.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Chip Binding on the Parameters of the Case-Hardened Layer of Tooth Surfaces for AMS 6308 Steel Gears Processed by Thermochemical Treatment

Fularski¹,

Filip

2021

Materials

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The following article describes influence of pressure welded or bound chips to the gear tooth flank and/or the tooth root on a carburized case and surface layer hardness of Pyrowear 53 steel gears, machined by Power Skiving method. This paper is focused only on one factor, the chips generated while forming gear teeth by power skiving, which could result in local changes in the carburized case parameters as a negatively affecting point of mechanical performance of the carburized case. The chips, due to the specifics of the power skiving process and the kinematics of tooth forming, could be subject to the phenomena of pressure welding or binding of chips to the tooth. During the carburizing stage of the downstream manufacturing processes, the chips form a diffusion barrier, which ultimately could result in localized changes in the carburized case. This work was an attempt to answer the question of how and to what extent the chips affect the case hardening. Performed simulations of chips by a generating cupper “spots”, mentioned in the study, represent a new approach in connection with minimization of errors, which could appear during carbon case depth and case hardness analysis for typical chips, generated during the machining process—assurance that a complete chip was bound to the surface. Hardness correlation for zones, where the chip appears with areas free of chips, gives simple techniques for assessment. Performed tests increased the knowledge about the critical size of the chip—1.5 mm, which could affect the case hardening. Obtained experimental test results showed that the appearance of chip phenomena on the gear tooth might have a negative impact on a carburized case depth and hardened layer.

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“…Spath and Huhsam [5] presented one of the first models for the simulation of the skiving process for machining periodic structures. Klocke et al [6] presented an analysis of the power skiving process using technological and simulative approaches. Guo et al [7] studied the cutting mechanism for machining gears with power skiving.…”

Section: Introductionmentioning

confidence: 99%

Calculation of non-deformed chip and gear geometry in power skiving using a CAD-based simulation

Tapoglou

2018

Int J Adv Manuf Technol

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Power skiving is a new machining process that allows the manufacturing of external and internal gears while achieving high throughputs. Although the process was first described during the nineteenth century, it is not until lately that advances in machine tool technology allowed for the process to be implemented on an industrial scale. This paper presents a novel simulation model that enables the accurate prediction of the non-deformed chip geometry, the form and dimensions of the chips produced during the cutting process as well as the characteristics of the gear gap. The simulation model is embedded on a CAD environment in order to take advantage of their increased accuracy. Through the simulation code, the virtual simulation of the manufacturing process is realised. The simulation model was verified with the use of analytical equations regarding the form of the gear. Chip geometry and dimensions for internal and external gears machined with different conditions are also presented.

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Technological and Simulative Analysis of Power Skiving

Cited by 33 publications

References 4 publications

Study of Machining of Gears with Regular and Modified Outline Using CNC Machine Tools

Study of Machining of Gears with Regular and Modified Outline Using CNC Machine Tools

The Effect of Chip Binding on the Parameters of the Case-Hardened Layer of Tooth Surfaces for AMS 6308 Steel Gears Processed by Thermochemical Treatment

Calculation of non-deformed chip and gear geometry in power skiving using a CAD-based simulation

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