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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23 Apr 2021
TL;DR: In this paper, the authors proposed to optimize the geometry parameters of the gear shaper to reduce the cutting force and improve the accuracy of the tooth profile, and the experimental results show that the multi-island genetic algorithm optimization can effectively fit the functional relationship between the geometric parameters and the slotting force.
Abstract: Aiming at the low precision of the tooth profile caused by the excessive cutting force during the machining of thin-walled ring gears, the geometric parameters of the gear shaping cutter are one of the factors affecting the size of the cutting force.The paper proposes to optimize the geometry parameters of the gear shaper to reduce the cutting force and improve the accuracy of the tooth profile. UG is used to model the gear ring and gear shaper, and the model is imported into ABAQUS to simulate and analyze the gear shaping process, and obtain the cutting force during the gear shaping process. The geometric parameters of the gear shaping cutter are used as input variables, and the cutting force of the gear shaping process is taken as the output response. The sample points are designed by optimizing the Latin hypercube experimental method, the mathematical model is established by the response surface approximation model, and the multi-island genetic algorithm is used for different interpolations. The geometric parameters of the tooth cutter are optimized. The experimental results show that the response surface model can effectively fit the functional relationship between the geometric parameters of the gear shaper cutter and the slotting force, and through multi-island genetic algorithm optimization, the slotting force is reduced by 34.87%, and the optimization effect is significant. Excessive slotting force causes the problem of low ring gear tooth profile accuracy, which is of great significance.
Patent•
30 Mar 2016
TL;DR: In this paper, the surface treatment process of a power steering gear wheel is described, which comprises steps of gear shaping and carburizing, and the wheel is subjected to shot blasting.
Abstract: The invention discloses surface treatment process of a power steering gear wheel. The process comprises steps of gear shaping and carburizing. After coarse gear shaping operation is performed, precise gear shaping operation is carried out. The single-side cutting amount of precise gear shaping reaches 0.20-0.25 mm. In the carburizing step, the depth of a carburizing layer ranges from 0.91 mm to 1.40 mm. The effective carburizing depth of teeth is within the range of 1.143 and 1.651 mm. The surface hardness is 56-64HRC. The hardness of a tooth core portion ranges from 28 to 48 HRC. Tempering is performed after the carburizing step in a continuous induction tempering furnace at the temperature of 190.56 DEG C for four hours. The wheel is subjected to shot blasting. A steel ball is 0.7 mm in diameter and 55 to 62 HRC in hardness. The shot blasting intensity is 0.016 to 0.022 A. The coverage rate of shot blasting is 200%. The power steering gear wheel is good in wear resistance and long in service lifetime.
Patent•
17 Dec 2019
TL;DR: In this article, a lens lower die rotating mechanism consisting of a base, wherein a top block bottom groove and a gear clamping groove are formed in the top of the base, a lifting rotating groove is formed in base, and a lifting plate is movably connected to the bottom in the lifting rotating rotating groove through formed holes.
Abstract: The invention relates to the technical field of production and manufacturing, and discloses a lens lower die rotating mechanism capable of automatically feeding and taking materials by utilizing a gear shaping mechanism. The lens lower die rotating mechanism comprises a base, wherein a top block bottom groove and a gear clamping groove are formed in the top of the base; a lifting rotating groove is formed in the base; a lifting plate is movably connected to the bottom in the lifting rotating groove through formed holes; a rotating plate chassis is fixedly connected to the bottom of a rotatingplate device; a separating plate is fixedly connected to the top of the rotating plate device; and a lens pressing lower die is movably connected to the top of the top block. The lens lower die rotating mechanism capable of automatically feeding and taking the materials by utilizing the gear shaping mechanism has the advantages that the holes are formed in the rotating plate device, so that afterpressing is finished, cooling can be carried out for a long time, the effect of cooling within sufficient time is achieved, and meanwhile, a large amount of time is saved.
Patent•
26 Nov 2019
TL;DR: In this article, an engine housing gear shaping clamp is used to ensure the rigidity of the workpiece, not prone to deformation and easy and convenient to operate, and a hydraulic executing element is controlled by controlling an electromagnetic valve on a hydraulic station, a workpiece can be quickly clamped through the clamp and gear shaping machining is realized.
Abstract: Provided is an engine housing gear shaping clamp and a hydraulic control method. The engine housing gear shaping clamp comprises a base body, rhombic positioning pins, circular positioning pins, positioning columns, positioning supporting oil cylinders, auxiliary supporting oil cylinders and clamping oil cylinders. A hydraulic executing element on the clamp is controlled by controlling an electromagnetic valve on a hydraulic station, a workpiece can be quickly clamped through the clamp, and gear shaping machining is realized. The method overcomes the problems that the rigidity is difficult toguarantee and deformation easily occurs in an original engine housing gear shaping machining process and has the beneficial effects of being simple in structure, capable of ensuring the rigidity of the workpiece, not prone to deformation and easy and convenient to operate.
Patent•
02 Apr 2014
TL;DR: In this article, a gear shaping structure for removing a cover of a steel ladle cover is described, where the rear end part of the gear shaping body is hinged to the supporting frame, the upper surface of the front end of the generator is provided with a slope, the slope is gradually heightened from front to rear, the highest point of the slope was matched with a slot which is matched with the suspension roll on the steel cover.
Abstract: The invention discloses a gear shaping structure for removing a cover of a steel ladle. The gear shaping structure comprises a gear shaping body and a supporting frame, wherein the rear end part of the gear shaping body is hinged to the supporting frame, the upper surface of the front end of the gear shaping body is provided with a slope, the slope is gradually heightened from front to rear, the highest point of the slope is provided with a slot which is matched with a suspension roll on the steel ladle cover, the supporting frame is provided with a slide piece which slides up and down, the slide piece is driven by a driving mechanism, the slide piece is hinged to one end of a pulling rod, the other end of the pulling rod is hinged to the gear shaping body, the front section of the gear shaping body is inserted into the position below the suspension roll of the steel ladle cover through the slope, then the suspension roll slides into the slot and is unlikely to slip off, when the steel ladle cover needs to be removed, the slide piece is driven by the driving mechanism to slide downwards, the gear shaping body rotates downwards, and the suspension roll is separated from the slot, so that the gear shaping body is withdrawn from the position below the suspension roll, safety in use can be realized, and the accidental danger can be prevented.