Gear shaping

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

Medium and large modulus cylindrical gear forming process and special die thereof

Abstract: The invention discloses a medium and large modulus cylindrical gear forming process and a special die thereof. The process includes the steps that firstly, a raw material is preprocessed to form hollow blank; secondly, pre-forming warm forging processing is performed on the hollow blank to form initial gear blank; thirdly, fine-forming cold extrusion gear shaping processing is performed on the initial gear blank to form original gear blank; finally, crowned tooth finish machining and heat treatment are performed on the original gear blank. The special die comprises an internal die and an external die sleeve arranged outside the internal die in a sleeved mode, a tooth-shaped die cavity is formed in the middle of the internal die, and the internal die is connected with the external die sleeve in a small-taper interference fit mode. According to the medium and large modulus cylindrical gear forming process and the special die of the medium and large modulus cylindrical gear forming process, when medium and large modulus gears are manufactured, the utilization rate of steel is improved, the gear production period and gear production energy consumption cost are reduced, and the bending resistance of teeth on the manufactured gears is greatly improved.

Fixture for gear shaft machining

Abstract: The utility model relates to a mechanical fixture, in particular to a fixture tool for carrying out gear shaping machining on gear shafts. The utility model discloses a fixture for gear shaft machining. The fixture for gear shaft machining comprises a fixture body used for being connected with a working platform. A connecting sleeve with an inner taper hole is connected on the fixture body, an expansion sleeve which is used for clamping a gear shaft is arranged inside the connecting sleeve, and the expansion sleeve is provided with an outer conical surface matched with the inner taper hole. The fixture for gear shaft machining further comprises a pushing device which is arranged on the connecting sleeve and used for pushing the expansion sleeve to axially move. The fixture for gear shaft machining has the advantages that the pushing device pushes the expansion sleeve to axially move, the inner taper hole in the connecting sleeve enables the expansion sleeve to contract in a radial mode, and therefore the gear shaft in the expansion sleeve is tightly clamped; and the fixture body is fixed on the working platform, when the fixture for gear shaft machining is used, gear shaping machining can be carried out only with the need of rectifying an excircle, and machining accuracy is ensured.

Plastic gear shaping injection mould

Abstract: The utility model discloses a plastic gear shaping injection mould, including scraping wings, cover half bedplate, guide pillar, runner plate, a soket head cap screw, the 2nd soket head cap screw, runner cover, subchannel draw that material pole, position circle, fixed die insert, stop screw, rectangle spring, distance pull rod, first gear die cavity are inserted, first entad thrust ball bearing, second entad thrust ball bearing, release link, push pedal, the 3rd soket head cap screw, ejector guide bush, ejector guide pin, second gear die cavity insert, push rod, ejector pin retaining plate, ejector sleeve, and reasonable in structure, high durability and convenient use, adopt monotype chamber shaping, the point runner of three equipartitions is adopted at the binding site of two flank of tooth, the equilibrium that the material flows when both having guaranteed injection moulding, also be of value to the dynamic balance after the gear shaping.

Gear shaping machine and gear machining device designing method

Abstract: PROBLEM TO BE SOLVED: To provide a gear shaping machine in which behavior of a tool can be made more stable and a gear machining device designing method.SOLUTION: The gear shaping machine comprises: a tool for cutting an object to be machined; a main shaft connected to the tool; a cutter head that supports the main shaft to be movable in an extending direction; a head turning shaft that supports the cutter head turnably; a structure that supports the cutter head; a linear motion mechanism that moves the main shaft along the cutter head in a shaft direction of the main shaft; an avoiding motion mechanism that turns the cutter head with the head turning shaft as a shaft; a damping mechanism that is arranged at a position at which the mechanism does not overlap with the head turning shaft and damps vibration of the cutter head.

Machining technology for cut-through shaft

Abstract: The invention discloses a machining technology for a cut-through shaft. The technology comprises the first step of forging, the second step of normalization, the third step of rough turning, the fourth step of turning of the full length and drilling of a central hole, the fifth step of semi-finish turning forming, the sixth step of finish polishing, the seventh step of hobbing, the eighth step of gear shaping, the ninth step of carburizing and quenching and the tenth step of outer circle grinding. According to the third step of rough turning, preliminary forming is finished after the outer circle and the end face of the cut-through shaft are subjected to rough turning, the reserved machining allowance of the single side is 0.75-1 mm, and the roughness reaches Ra 6.3. According to the tenth step of outer circle grinding, a bearing fit section of the cut-through shaft needing fitting is subjected to outer circle grinding shaping treatment, and a bearing section of the cut-through shaft without the need of fitting is also grinded to ensure that bounce is below 0.02 mm. According to the machining technology of the cut-through shaft, the machined cut-through shaft possesses high surface hardness, high centre toughness and low periphery bounce.