Category Gears and Racks

Heat treatment of gear sprocket made of 45 gauge steel

According to the requirements of the sprocket gear: if the impact force is small, surface carburizing, nitriding and other technologies can be carried out!In this way, the surface hardness is high, the matrix hardness is low, the wear resistance is good, and it is not easy to break.If the impact load is large, it is due to the quenching and tempering treatment, that is, high temperature tempering. 45#…

Analytical gear design should fully consider process problems

Due to its particularity, the design of gear products must consider the influence of various aspects such as blank, machining, heat treatment and testing.Manufacturing-test integration can optimize materials and processes, quantitatively evaluate, help decision-making, and improve product power density.Especially for spiral bevel gears, due to the non-standard design of the tool, the same…

Finishing of gears, sprockets, racks

At present, the gear finishing methods used in industry are mainly shaving, grinding, extrusion, grinding and honing.Teeth shaving is to shave teeth with a shaving knife on a shaving machine. It is a method of gear finishing. The shaving knife is equivalent to a helical gear with many edges on the tooth surface.It drives the processed gears to rotate relative to each other, like staggered shaft gears meshing…

Reasons and consequences of gear undercuts

The reason for the undercut: when the intersection of the tool tooth top line and the meshing line exceeds the meshing limit point N1, and the tool continues to move from position II, the involute tooth profile that has been cut at the root is cut off again.Consequences of undercutting: gears with severe undercuts, on the one hand, weaken the bending strength of the gear teeth; on the other hand, will…

TSH induction hardening process for sprocket gears

TSH technology is an advanced induction hardening process designed to reduce overall cost and replace chemical heat treatment processes.Conventional heat treatment of sprocket gears involves prolonged gas carburizing in batch or continuous furnaces followed by oil quenching.Typically, gears are tempered in a low temperature furnace for one hour.After carburizing,…

gear design

1. Calculate the drive power according to the load and motion state (speed, vertical motion or horizontal motion) 2. Preliminarily estimate the gear modulus (if necessary, follow up with gear strength check, if the modulus is found during strength check If the number is too small, the gear module must be re-determined. Regarding the selection of gear module…

Research on key technology of high performance arc gear pump

Gear pump is a common fluid transmission and conveying element. Because of its simple structure, high efficiency and not easy to be polluted by oil, it is widely used in aviation, aerospace, ships and automobiles and other fields.With the advancement and development of science and technology, the requirements for gear pump performance are getting higher and higher, which is mainly reflected in the realization of high gear pump performance…

Introduction of several processing methods for large gears and large sprockets:

1. Milling teeth, this is the use of disc-shaped modulus milling cutters or finger-shaped milling cutter teeth, which belong to the forming processing method. The cross-sectional shape of the cutter teeth of the milling cutter and the shape of the gear teeth correspond to the two.This method is not only inefficient but also has relatively low machining accuracy, and is suitable for small batch production of a single piece. 2. Form grinding is also…

Gear hobbing for machining of sprocket gears

Hobbing and hobbing gears belong to the generation method, which can be regarded as gear and rack transmission without meshing clearance.When the hob rotates once, it is equivalent to the rack moving one tooth in the normal direction, and the continuous transmission of the hob is like an infinitely long rack moving continuously.When the hob and the hobbing blank are strictly in accordance with the transmission ratio of the gear to the rack...

The working principle of rack and pinion power steering gear

In the rack-and-pinion steering gear, the steering gear, which is the driving member of the transmission pair, is installed in the housing and meshes with the horizontally arranged steering rack.The spring presses the rack against the steering gear through the pressure block to ensure a backlash-free meshing.The preload of the spring can be adjusted with the adjusting screw. >> When working, the steering gear…

The processing of sprocket gear tooth surface can be divided into forming method processing and generating method processing.

The processing of sprocket gear tooth surface can be divided into forming method processing and generating method processing 1. Tooth surface forming method processing: Tooth surface forming method processing refers to the use of forming tools to process the workpiece.Gears made in this way are less accurate and can only be used in low-speed motion environments.Common machining methods for forming methods include milling…