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.

Method for machining inner gear ring

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.

Method for machining inner gear rings

The invention relates to process for machining a thin-walled precision internally-toothed sleeve with a flange, a cone and a transition ring. High-strength alloy structural steel of a blank is forged, an integrally-toothed surface is in nitridation treatment in a heat treatment manner, the depth of a nitridation layer ranges from 0.3mm to 0.5mm, hardness of the surface is equal to or higher than HV650, and hardness of a core is HB283-341; ultrasonic flow detection is carried out after forging rough turning, forming is basically realized by means of semi-finish turning after thermal refining, allowance is reserved for fine turning, and primary stress elimination processing is realized; a lightening hole is machined on the cone after primary fine turning, and secondary stress elimination processing is realized; internal teeth are inserted after secondary fine turning, and tertiary stress elimination processing is realized; a radial hole on the transition ring and a connecting hole on the flange are machined after tertiary fine turning, and fourth stress elimination processing is realized; and the teeth are roughly ground after a reference surface is ground by the aid of a vertical grinder, the teeth are finely ground after nitridation treatment is finished and the reference surface is finely ground by the vertical grinder, magnetic particle testing is carried out after the teeth are ground, and demagnetization is realized after the magnetic particle testing. A work procedure with higher generated machining stress is divided into four stages to realize machining, the stress elimination processing is carried out after machining of each stage is finished, and the internal teeth are respectively roughly and finely ground before and after the nitridation treatment, so that the quality of products is guaranteed.

Process for machining thin-walled precision internally-toothed sleeve with flange, cone and transition ring

The invention relates to a slewing bearing quenching type inner gear ring processing technology The technology processes comprise workblank roll forming, rough turning, half finish turning, rolling path quenching, finish turning I, gear producing, gear tooth quenching, finish turning II, finish turning III, rolling path polishing and mounting hole drilling The processing technology is characterized in that the stage of the finish turning III comprises the following steps: placing the bottom surface of a workpiece on a contour cushion of a worktable, rectifying through an excircle positioned at the lower part of a rolling path, performing finish turning on the end surface and the excircle positioned at the upper part of the rolling path, and processing the size H, and the size D of the excircle positioned at the upper part of the rolling path to the size required by a drawing Through the adoption of the technology, the content of the finish turning III process is enlarged after a gear tooth is quenched, the parallelism requirement of the bottom surface (the standard plane) of the workpiece and the end surface (a non-standard plane) of the workpiece are ensured, and reliable processing standard guarantee can be provided for the follow processes, so that the precision of slewing bearing is improved, the mounting and application of the slewing bearing product can be ensured, and then the service life of the slewing bearing product and a connecting bolt can be prolonged

Slewing bearing quenching type inner gear ring processing technology

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 thin-wall annular gear processing method which comprises the steps of forging, rough turning, tempering, half finished turning, finish turning and gear shaping, wherein the finish turning process comprises the steps of: taking the end surface of the thin-wall annular gear after half finished turning as a thrust surface, acting the axial force to fix the thin-wall annulargear on a horizontal lathe work bench, and then turning the inner wall and the outer wall of the thin-wall annular gear; and the gear shaping process comprises the steps of: using a fixture to simlutaneously fix the end surface and the outer wall of the thin-wall annular gear after finish turning, and then conducting gear shaping to the inner wall of the thin-wall annular gear. The thin-wall annular gear processing method can lead the thin-wall annular gear after processing to have small deformation, has high precision and high efficiency.

Chunyan Feng

Papers

Thin-wall annular gear processing method