Gear shaping

About: Gear shaping is a research topic. Over the lifetime, 598 publications have been published within this topic receiving 1880 citations.

Gear-box planetary gear shaping die

Abstract: The invention relates to a forming die of a gearbox planet gear, belongs to the processing dies of car automatic gearbox planet gears, solves the problems in prior forging die, including big forging force, rigorous requirement for blanks, and short service life of the die, and satisfies the forming requirement of a car automatic gearbox planet gear. The forming die comprises an upper die and a lower die arranged symmetrically and vertically; the end faces of both an upper punch and a lower punch are bosses; a diffluent trough is formed on the boss of the lower punch; the shoulders of both the upper punch and the lower punch extend into a tooth-shaped cavity die by 1-2mm in the final extrusion state; a rotary ejection mechanism can also be arranged; the lower punch can rotate when being ejected; and a helical cylindrical gear with a bigger helix angle can be forged. The forming die has the advantages of simple structure, easy manufacture and installation, small forming force and low requirement for blanking precision. Furthermore, the forming die can realize single punch extrusion according to different die carriers and equipment, double punch extrusion in opposite directions, as well as the extrusion of the helical cylindrical gear with big helix angle.

Method for machining inner gear ring

Abstract: The invention relates to a method for machining an inner gear ring, and belongs to the technical field of machining. The method for machining the inner gear ring solves the problems that in the prior art, the production process of an inner gear ring machining technology is long, the rigidity of an inner gear ring after normalization cannot satisfy the requirement, and the condition of nitriding is high in temperature. The inner gear ring comprises a body 1, a locating hole 2, a mounting hole 3 and a lubricating hole 4. The method for machining the inner gear ring comprises the following steps of forging forming, rough machining, tempering, fine machining, two-step gear shaping, nitriding and turning machining. Machining processes of the inner ring are simple, the inner gear ring which is manufactured is high in rigidity, the rigidity can reach 650-759 HV, an effective rigid layer is deep, the depth can reach 0.40mm, precision is high and anti-abrasion performance is good.

Inner gear machining method and special gear shaping clamp

Abstract: The invention provides an inner gear machining method and a special gear shaping clamp. The processing method comprises the following steps: firstly carrying out rough machining on wheel teeth by virtue of the common shaping machine, adopting an indexing mechanism and a shaping tool with a trapezoidal cutting edge to machine gear grooves in a one-by-one manner, obtaining a trapezoidal middle tooth profile which is very close to the final tooth profile of an inner gear, and remaining a small amount of fine-machined allowance; and then adopting the shaping tool with a conjugate tooth profile on the gear shaping machine to carry out fine machining on the wheel teeth. The special gear shaping clamp comprises a base, pressing plates, an adjusting screw, a screw, a pressing nut, a steel ball, a retaining frame, a sliding block, sliding block bolts, sliding block nuts, a positioning rod and a positioning pin, and the special gear shaping clamp has the main functions of aligning the peripheral positions of the inner gear and the gear shaping tool and clamping a workpiece. In the inner gear machined by adopting the method, the gear shaping efficiency can be effectively improved, the wear of the gear shaping tool can be reduced and the machining accuracy of the wheel tooth can be improved.

Method for fabricating wind driven generator gear

Abstract: The invention discloses a method for fabricating a wind-driven generator gear. The method includes the following steps of (1) providing a workblank used for fabricating the gear, (2) forging of the workblank, (3) normalizing treatment, (4) turning, (5) gear cutting, (6) gear shaving, (7) thermal treatment, and (8) grinding, wherein the step (2) includes that the workblank is forged by hot die forging; the step (3) includes that the workblank after being forged is treated by an isothermal normalizing technology; the step (4) includes that turning is performed on the workblank which is subjected to normalizing treatment by a numerically controlled lathe; the step (5) includes that hobbing and gear shaping are performed by a gear hobbing machine and a gear shaping machine; the step (6) includes that gear shaving is performed by a gear shaving machine; the step (7) includes that carburizing and quenching treatment are performed; the step (8) includes that inner holes, end faces and external diameter portions of a shaft of the gear which is subjected to thermal treatment are subjected to finish machining, and thereby, dimensional precision is improved and form and location tolerance is reduced. The gear of the wind-driven generator stands huge moment of force of a wind wheel so that the gear of the wind-driven generator is necessarily resistant to fatigue damage by the moment of force.