Questions about machined gearbox gears!

Gear processing generally includes forging, turning, milling, tooth making, inserting (pulling) grooves, heat treatment and other processes, according to the gear structure and precision requirements. You said the car.

First, the second car may be rough after quenching and tempering treatment and then fine turning. The tooth-making process generally includes hobbing and shaping, and hobbing can generally be used as a straight tooth and helical tooth for external teeth; Shaping can generally be made as a straight tooth for external teeth and a straight tooth for internal teeth. In general, it is more economical to hob the straight teeth of the external teeth, which means that the efficiency is high.

Of course, the double external gear and some external spur gears that are structurally not allowed to hob the teeth had to be shaping. Gear inverting and shaving are the post-processing processes of tooth making. The chamfer is also called chamfering, which is the end face of the tooth rounding arc, and the dial gear of the machine tool should be rounded, which is specially completed on the chamfering machine.

Shaving is done on a shaving machine to improve the tooth surface finish and precision of the gears. I don't know if you understand? Send it to me if you have any questions.

Upstairs is very accurate, if you want to get a higher precision gear, after hobbing after heat treatment, you also need to grind the teeth.

Although the torque converter can transmit and increase the engine torque, the torque conversion ratio is not large, and the transmission range is not wide, which is far from meeting the needs of the automobile working conditions. In order to further increase the torque, expand its transmission range, and improve the adaptability of the car, an auxiliary transmission is installed behind the torque converter, and the planetary gear mechanism is mostly used.

The planetary gear transmission is composed of a planetary gear mechanism and actuators such as clutches, brakes and one-way clutches. A planetary gear mechanism usually consists of multiple planetary rows. The number of planets is related to the number of gears.

The shift actuators of planetary transmissions include shift clutches, shift brakes, and one-way discs.

Extended Materials. The manual gearbox is mainly composed of gears and shafts, and the variable speed and torque are generated through different gear combinations; The automatic transmission AT is composed of a hydraulic torque converter, planetary gears and a hydraulic control system, which achieves variable torque through hydraulic transmission and gear combination.

Among them, the hydraulic torque converter is the most characteristic component of the AT, which is composed of pump wheels, turbines and guide wheels, etc., which directly input the engine power to transmit torque and separation.

The pump wheel and the turbine wheel are a pair of working combinations, they are like two fans placed opposite each other, the wind from one active fan will drive the blades of the other passive fan to rotate, and the flowing air - wind becomes the medium of kinetic energy transfer.

If the liquid is used instead of air as the medium to transfer kinetic energy, the pump wheel will drive the turbine to rotate through the liquid, and then add a guide wheel between the pump wheel and the turbine to improve the transfer efficiency of the liquid. Due to the torque converter automatic variable speed torque range is not large enough and the efficiency is low.

Three-shaft ordinary gear transmission: the structure of the variable speed transmission mechanism: 1

The first shaft: through the bearing, the front end is supported in the rear end hole of the crankshaft, and the spline part is equipped with a clutch driven disc; There are normal and direct gears in the rear. 2.

Intermediate shaft: There is a gear that is often meshed with the first shaft gear, the first and reverse gears are integrated with the shaft, and the second, third and fourth gears are assembled with semi-circular keys. 3.

Second shaft: The front end is supported at the rear end of the first shaft, and the rear end is supported on the housing by bearings. The first gear can slide axially, and the second, third, and fourth gears are matched with the shaft through bearings, and are always meshed with the intermediate shaft gears, all of which have force-transmitting ring gears.

There is a pair of spline hubs and meshing sleeves at the front and rear to achieve gear shifting. 4.Reverse gear shaft:

Two first-gear gears as one, one of which is always engaged with the intermediate gear. Gearing: 1

Neutral: The meshing sleeve and transmission gear of the two-axis shift are in the intermediate idle position, and the power is not transmitted to the two-shaft. 2.

First gear: The first gear and reverse gear move forward and engage with the first gear of the intermediate shaft, and the power is transmitted to the second axis through the first gear of the intermediate shaft, the first gear of the intermediate shaft, the first gear of the second shaft and the reverse gear. 3.

2nd gear: Move backwards, and the engagement sleeve engages with the ring gear on the second gear of the second axis. 4.

Third gear: After advancing, the meshing sleeve engages with the ring gear on the third gear on the second axis. 5.

Fourth gear: The front engagement sleeve moves back and engages with the ring gear on the fourth gear of the second axis. 6.

Fifth gear: Before moving forward, the meshing sleeve is engaged with the gear ring on the two-shaft constant meshing transmission gear, and the power is directly transmitted from the first shaft to the second shaft. 7.

Reverse: The first gear and reverse gear on the second axle are meshed with the reverse gear to realize the reversing of the car. Structural Analysis:

1.Shaft support and positioning: The shaft can only have one positioning support, and the other supports can be axially free and retractable.

2.Shift structure type: The synchronizer is used to shift gears.

3.Structure to prevent automatic shifting: Some transmission gears adopt mechanisms to prevent automatic shifting, mainly including thin-cut gears and bevel gears.

4.The shaft of the gear is aimed at the limit: the thrust ring acts as a limiting device.

5.Gear transmission clearance device: On the side of the driven (or active) gear, a thin steel plate auxiliary gear is installed, and the two gears are meshed with another transmission gear at the same time.

6.Lubrication and sealing. 7.

Gearbox. Twin shaft transmission: 1

Structure: Front-wheel drive or rear-wheel drive vehicles with a two-axle drive, including four forward gears and one reverse gear. 2.

Working process: the first, second, third and fourth gear driving gears are fixedly connected to the input shaft, and the four-gear driven gears that are often meshed with them are sleeved on the output shaft through the bearing. Combined Transfer:

1.Function: Ensure that the car has good power, economy and acceleration.

2.Structure: Two transmissions are connected in series to form a combined transmission.

One of them is the main transmission: there are many gears in reverse, and the other is the sub-transmission: only high and low gears.

Summary. Hello, I am happy to serve you and give you the following answers: the most suitable gear in the gearbox of ordinary machine tools is the rack and pinion.

The rack and pinion have good wear resistance, corrosion resistance and impact resistance, which can meet the requirements of high speed, high load and high precision of machine tool gearbox. When a problem occurs, it may be caused by substandard quality or improper installation of the rack and pinion. The workaround is:

1.Check the quality of the rack and pinion to ensure that the quality is qualified; 2.Check the installation of the rack and pinion to make sure the installation is correct; 3.

Check the lubrication of the rack and pinion to ensure that the lubrication is good; 4.Check the cleanliness of the rack and pinion to ensure that it is clean and pollution-free; 5.Check the crank of the rack and pinion to make sure the crank is correct; 6.

Check the bearing of the rack and pinion to make sure that the bearing is normal. Personal tip: When installing the rack and pinion, pay attention to check the quality, installation, lubrication, cleaning, crank and bearing of the rack and pinion to ensure the normal use of the rack and pinion.

The gears in the gearbox of ordinary machine tools are the most suitable for selection.

Hello, I am happy to serve you and give you the following answers: the most suitable gear in the gearbox of ordinary machine tools is the rack and pinion. The rack and pinion have good wear resistance, corrosion resistance and impact resistance, which can meet the requirements of high speed, high load and high precision of machine tool gearbox.

When a problem occurs, it may be caused by substandard quality or improper installation of the rack and pinion. The workaround is:1

Check the quality of the rack and pinion to ensure that the quality is qualified; 2.Check the installation of the rack and pinion to make sure the installation is correct; 3.Check the lubrication of the rack and pinion to ensure that the lubrication is good; 4.

Check the cleanliness of the rack and pinion to ensure that it is clean and pollution-free; 5.Check the crank of the rack and pinion to make sure the crank is correct; 6.Check the bearing of the rack and pinion to make sure that the bearing is normal.

Personal tip: When installing the rack and pinion, pay attention to check the quality, installation, lubrication, cleaning, crank and bearing of the rack and pinion to ensure the normal use of the rack and pinion.

Can you tell us more about that?

Hello, I am happy to serve you and give you the following answers: the most suitable gear in the gearbox of ordinary machine tools is the rack and pinion. The rack and pinion have good wear resistance, corrosion resistance and impact resistance, which can meet the requirements of high speed, high load and high precision of machine tool gearbox.

When a problem occurs, it may be caused by substandard quality or improper installation of the rack and pinion. The workaround is:1

Check the quality of the rack and pinion to ensure that the quality is qualified; 2.Check the installation of the rack and pinion to make sure the installation is correct; 3.Check the lubrication of the rack and pinion to ensure that the lubrication is good; 4.

Check the cleanliness of the rack and pinion to ensure that it is clean and pollution-free; 5.Check the crank of the rack and pinion to make sure the crank is correct; 6.Check the bearing of the rack and pinion to make sure that the bearing is normal.

Personal tip: When installing the rack and pinion, pay attention to check the quality, installation, lubrication, cleaning, crank and bearing of the rack and pinion to ensure the normal use of the rack and pinion.

Gearbox Tooth Acacia Excavation Wheel Material: 20crmnti The final heat treatment process is as follows: carburizing first, increasing the surface carbon content, in order to maintain the high strength and impact toughness of the core, the core still maintains a low carbon content; After carburizing, quenching and low-temperature tempering are carried out to make the surface hardness of the teeth meet the high hardness requirements, and the core remains low.

The most important role of the gearbox gear is the power output.

Maintenance method 1, check the combination and fastening of the relevant parts of the gearbox.

2. The lubricating oil of the gearbox is gear oil, and it is necessary to pay attention to the cleanliness of the gear oil, and there should be no mechanical impurities, otherwise the delay will accelerate the wear of the gear.

3. Clean the gearbox regularly and replace the gear oil.

4. Regularly check the sealing integrity of the oil seal and liner cardboard, and replace it if necessary. Gearbox gear function Maintenance lead slip method @2019