Large Gear Wheel

A large gear wheel usually refers to gears with large size, modulus or relatively large number of teeth, which play an important role in mechanical transmission, it is also widely used in other application that require high torque and low cost transimission.

1. Large gear wheel is suitable for large torque transmission.
2. Customizable according to customer's drawings.
3. Related transmission parts can be provided, like gearbox, motor, oil station, control system.
4. It can be divided into several pieces.

 

Steel group big gear wire cutting processing
Processing background: In the field of steel manufacturing, big gear is an important mechanical transmission component, and the traditional processing method is low efficiency and limited accuracy.
Machining difficulties: large diameter, complex tooth shape, high requirements for tooth surface accuracy and roughness, traditional machining is difficult to ensure the consistency of tooth shape processing and tooth surface finish, and processing efficiency is low.
Solution: 800 five-axis CNC wire cutting machine, using its five-axis linkage function, can flexibly adjust the tilt Angle of electrode wire, to achieve the complex tooth shape of high-precision cutting; The unique multi-cutting process (rough cutting, fine cutting, smooth cutting) ensures both processing efficiency and surface quality.
Machining effect: Compared with traditional gear milling, the efficiency is increased by more than 40%, the tooth surface finish reaches Ra0.8μm, and the tooth shape consistency is significantly improved.

Export large diameter gear drilling
Processing background: A manufacturing company to undertake export products large diameter gear processing tasks.
Processing difficulties: the diameter of the big gear ring is more than 5 meters, and 96 holes need to be completed on the ring ring, which is difficult to install; Each bolt face behind the 96 holes needs to be smoothed, but the bolt face is sunken in the inner layer of the tooth ring, the operating space is very limited, and the gear is a circular arc product, the bolt face is stressed unevenly during processing, and the tool is easy to break.
Solution: Deploy a drive for the big gear "special", first use the "special" drive to pull from the top, and then in the lower end of the table to form two Angle iron to form a support plate, and then install a jack in the gear bevel position to prevent the tooth ring sliding, and finally use the screw pressure plate as the pin to form a pull; Technicians lie on the workbench, probe the body into the bottom of the gear ring, install the tool rod, adjust the direction of the tool, and overcome the space limitation for processing.
Machining effect: After hard work, the drilling of the big gear and the grinding of the bolt surface were successfully completed.

Mill and other equipment big gear hobbing processing
Processing background: Large gears in coal mills, mills and cement equipment, with large diameter and large weight, are key parts with the longest production cycle.
Processing difficulties: Taking the module m=28, the number of teeth z=220, the tooth width b=700mm, and the big gear of the material ZG42CrMo as an example, the processing time is about 30 days according to two rough rolling and one fine rolling, and the processing efficiency is low and the cost is high.
Solution: The main process is rough turning → conditioning → milling joint surface → semi-finishing turning → cutting tooth profile → rough planing tooth → secondary milling joint surface → finishing turning → finishing gear hobbing. Meanwhile, a small hydraulic planer is used instead of a hobbing machine to rough the grooves, relieving the production pressure of a large hobbing machine.
Processing effect: the processing time of hobbing is reduced to 1/3 or even 1/4 of the original, which extends the service life of the hob and reduces the cost of the hob without adding a large hobbing machine.

Mining with spiral bevel gear processing
Processing background: Domestic mining and other industries have increased demand for spiral bevel gears with large modulus and large diameter, but they rely on expensive imports and long delivery times.
Processing difficulties: For the transmission power of more than 5000KW, a module of more than 40mm, a gear diameter of more than 2000mm, the requirements of 5, 6 precision spiral bevel gear manufacturing, machine specifications, tools, and heat treatment requirements are very high.
Solution: Using domestic CNC gear milling machine, grinding machine, with Gleason tooth tooth contour machining method for processing.
Processing effect: This can be processed to meet the accuracy and life requirements of the spiral bevel gear.

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