Topic
Gear shaping
About: Gear shaping is a research topic. Over the lifetime, 598 publications have been published within this topic receiving 1880 citations.
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Patent•
04 Feb 2015
TL;DR: In this article, the authors proposed a bearing-and-pull-rigidity-based axial locking structure for gear shaping on a thin-wall outer gear ring, where the workpiece is axially supported by the shaft sleeve and axially locked by the gasket moving down with the pull rod.
Abstract: The invention discloses a fixture for gear shaping on a thin-wall outer gear ring The fixture jointly consists of a pull rod, a gasket, a shaft seat, a shaft sleeve and a substrate, wherein the end face facing upwards of the substrate is provided with a concave spigot for installing the shaft seat in a positioning manner; the pull rod penetrates the inner bore of the substrate, and an annular groove is formed in the outer wall of the upper exposed rod end; the gasket is assembled in the groove to form a linkage structure; the shaft seat of the fixture disclosed by the invention is a multi-section shaft component, two sections of shaft segments located above and below a convex circular bead are coaxial, and the external diameter of the previous section of shaft segment is in clearance fit with the inner bore of a workpiece to form a positioning structure; the shaft sleeve directly covers the shaft sleeve, the shaft sleeve is located between the opposite end faces of the substrate and the workpiece, the workpiece is axially supported by the shaft sleeve, and the workpiece is axially locked by the gasket moving down along with the pull rod According to the fixture disclosed by the invention, aiming at the problems that the rigidity of the thin-wall gear ring is insufficient and the deformation of the thin wall can be easily caused by the gear shaping, the radial positioning and axial locking structure is adopted, so that the thin wall of the workpiece is neither subjected to the action of the radial force nor subjected to the action of the axial force, and therefore the goals that machining deformation is reduced and the machining accuracy is improved are achieved
3 citations
TL;DR: In this paper, a third-order profile correction to the cone grinding wheel is proposed to increase the accuracy of the work gear profile geometry of a helical gear shaping cutter, and the profile errors corresponding to the varied resharpening depth are shown in the topography with information of true involute form diameter and semitopping depth.
Abstract: Although the Isoform® lengthwise-reciprocating grinding process is considered as one of the most accurate methods for generating the tooth profile geometry of a helical gear shaping cutter, the tooth profile accuracy produced by the Isoform® with a straight cone grinding wheel is not accurate enough for high precision requirement. That is why the shaper cutter is used as a rough cutting tool for most cases. A third-order profile correction to the cone grinding wheel is proposed to increase the accuracy of the work gear profile. A novel topography is developed to schematically show the work gear tooth profile accuracy cut by a resharpened shaping cutter. The profile errors corresponding to the varied resharpening depth are shown in the topography with information of true involute form diameter and semitopping depth. The usable resharpening depth of the shaping cutter can be determined by this topography. The numerical result indicates that third-order correction reduces the profile error of the major cutter enveloping gear to submicro and extends the resharpening depth.
3 citations
Patent•
17 Aug 2011
TL;DR: In this paper, a composite gear shaping cutting/shaving cutter is described, which has the advantages of high efficiency, large strength and long service life, and it is characterized by a stepped composite cutting face or side composite face and a stepped rear composite cutting faces arranged on the cutting face in a protruding manner, as well as a stepped edge or a slitting edge.
Abstract: The invention provides a composite gear shaping cutter/ composite gear shaving cutter, which has the advantages of high efficiency, large strength and long service life. The composite gear shaping cutter/ composite gear shaving cutter comprises a cutter handle or a positioning hole and a cutter head, wherein the cutter head is integrally provided with a plurality of cutter blades or cutter bodies; and each cutter blade or cutter body is provided with a cutting face. The composite gear shaping cutter/ composite gear shaving cutter is characterized in that (1) a stepped composite cutting face or side composite cutting face and a stepped rear composite cutting face are arranged on the cutting face in a protruding manner so as to form a stepped composite cutting edge or rear composite cutting edge, as well as a stepped edge or a slitting edge with at least one step; (2) the cutting edge or side cutting edge is provided with at least one notched edge the opening of the notched edge extends towards the cutting face, the side cutting face or the rear cutting face to form at least one groove; and (3) at least one notched edge is arranged on the cutting edge, the side cutting edge, the rear cutting edge, the composite cutting edge, the side composite cutting edge or the rear composite cutting edge, and the opening of the notched edge extends towards the cutting face, the side cutting face or the rear cutting face to form at least one groove.
3 citations
Patent•
08 Jan 1974
TL;DR: In this article, the stroke drive is first disengaged from its driving connection to the spindle, after which the retracting drive is drivingly engaged with the spindles to retract the same.
Abstract: A gear shaping apparatus in which a spindle with the cutting wheel thereon is movable axially from its normal operating range to a retracted position to facillitate insertion and removal of the work piece. A retracting drive is provided separate from the stroke drive which reciprocates the spindle axially for normal cutting. For retraction of the spindle, the stroke drive is first disengaged from its driving connection to the spindle, after which the retracting drive is drivingly engaged with the spindle to retract the same. The retracting drive may be a fluid operated piston and cylinder unit operably connected to the spindle or a separate motor attached to a shaft which is permanently drivingly engaged with the spindle.
3 citations
Patent•
18 Aug 2017
TL;DR: In this article, a helical gear internal gear shaping machine with an adjusting device is described, in which a rotating shaft is mounted on a working table and driven by a motor located below the working table to rotate.
Abstract: The invention discloses a helical gear internal gear shaping machine with an adjusting device. The helical gear internal gear shaping machine comprises a working table. A gear shaping mechanism is arranged above the working table. A mounting hole is formed in the position, below the gear shaping mechanism, of the working table. A fixing device for clamping a to-be-machined gear is mounted in the mounting hole. One side of the fixing device is rotationally connected with the working table, and the other side of the fixing device is located above a spiral supporting table and supported by spiral inclination faces of the spiral supporting table. The spiral supporting table comprises a rotating shaft and the spiral inclination faces arranged around the rotating shaft. The rotating shaft is mounted on the working table and driven by a motor located below the working table to rotate. According to the helical gear internal gear shaping machine with the adjusting device, the whole fixing device for fixing the to-be-machined gear can incline by a certain angle, the fixing device is driven by the spiral supporting table to rotate, rotating and inclining of the fixing device of the to-be-machined gear are achieved through the spiral inclination faces arranged around the rotating shaft, and adjusting is convenient and smooth.
3 citations