The invention discloses a hollow shaft and a manufacturing method thereof. The method includes the steps of step a, manufacturing a tubular blank in a forging or casting mode to obtain blank materials, step b, carrying out heat treatment on the blank materials, step c, machining the blank materials after heat treatment so as to form a semi-finished product with the same shape and size as the hollow shaft, and step d, carrying out surface treatment on the semi-finished product to obtain the hollow shaft. According to the hollow shaft and the manufacturing method thereof, the tubular blank is used for manufacturing the hollow shaft, due to the fact that the blank is provided with a central through hole, raw materials are saved, and machining workload in subsequent links is reduced.

Hollow shaft and manufacturing method thereof

The invention relates to a mine vehicle axle wheel reductor planetary gear and a manufacture method thereof. The manufacture method comprises the following processing steps of: (1) forging to obtain a gear ring; (2) roughly turning; (3) carrying out preheat treatment; (4) finely turning; (5) carrying out ultrasonic flaw detection; (6) hobbing; (7) boring a plurality of oilholes in the wall of a planet wheel inner hole in the middle of the gear ring along the radial direction of the planet wheel inner hole; (8) carburizing for heat treatment; (9) performing plain grinding on two end faces of the gear ring to the required size and then grinding the planet wheel inner hole of the gear ring to the required size; (10) grinding the gear; (11) carrying out magnetic powder inspection; (12) strengthening shot peening at gear root; and (13) carrying out manganese phosphating. The planetary gear produced by adopting the manufacture method, disclosed by the invention has the advantages that the contact fatigue strength is better, the reliability is greatly enhanced and the service life is greatly prolonged; and according to the manufacture method provided by the invention, shot peening strengthening is adopted in processing the gear root, and the stress state of the gear root is changed, so that the gear root bending strength of the planetary gear is remarkably enhanced, the strength of the planetary gear is enhanced and the service life of the planetary gear is prolonged.

Mine vehicle axle wheel reductor planetary gear and manufacture method thereof

The invention discloses a gear ring machining process, which comprises the following steps of forging, rough turning, tempering, fine turning, gear shaping, fine gear broaching, carburizing, press quenching and shot blasting to obtain a finished product. According to the gear ring machining process provided by the invention, the product has the advantages of higher surface hardness, high core hardness and deep hardened layer; meanwhile, the machining cost is reduced, and the gear ring size can be ensured.

Gear ring machining process

The invention discloses a machining process for a differential lock gear sleeve. The machining process comprises the following steps of forging, normalizing, rough turning, fine turning, gear broaching, face tooth milling, carburizing, quenching, shot blasting and phosphating to obtain a finished product. The machining process for the differential lock gear sleeve provided by the invention has higher mechanical strength, high abrasion resistance, high corrosion-resistance and has long service life.

Machining process for differential lock gear sleeve

The invention discloses a machining process for fixed disks of synchronizers, which includes the following steps: forging, normalization, rough turning, finish turning, rough plane grinding, gear shaping, carburization, pressure quenching, shot blasting, finish plane grinding so as to finally obtain finished products. The machining process for the fixed disks of the synchronizers, which is provided by the invention, can enhance not only the mechanical strength of the fixed disks of the synchronizers but also the wear resistance and planeness of the fixed disks of the synchronizers, thus prolonging the service lives of the fixed disks.

Machining process for fixed disks of synchronizers

The invention discloses a method for machining inner gear rings. The method includes steps of forging, normalizing, rough lathing, finish lathing, gear shaping, carburizing, pressure quenching and shot blasting. By the aid of the method, surface hardness, core structure and depth of a hardened layer of a gear ring are improved, machining cost is lowered, deformation of the gear ring is avoided assuredly, accordingly, the service life of the gear ring is prolonged, and the load capacity of a vehicle is enhanced.

Guohui Jiang

Papers

Method for machining inner gear rings