What kind of gears can be processed by the gear hobbing machine 5

Gear hobbing machine (gearhobbingmachine) is the most widely used machine tool in gear processing machine tools, on the gear hobbing machine can cut spur teeth, helical cylindrical gears, worm gears, sprockets, etc. A gear processing machine for processing spur, helical and herringbone cylindrical gears and worm gears by the hob method. [Click to get real-time from the manufacturer**].

The cutter that cuts the tooth blank during gear hobbing is a hob, because the spiral rise angle of the hob is larger, so the appearance is a worm, and the hob is grooved perpendicular to the direction of the spiral groove, forming a plurality of cutting edges, and its normal profile has a rack shape.

Therefore, when the hob rotates continuously, the cutter tooth can be regarded as the movement of an infinitely long rack, and at the same time, the cutter tooth is cut from top to bottom, and the meshing relationship between the rack (hob) and the tooth blank is maintained, and the hob can process the involute tooth shape on the tooth blank.

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Straight teeth. Helical teeth. Worm wheel. Drum teeth.

Introduction to the parameters of the hobbing gear.

Type: Hobbing machine.

Model: Rock Tease Y3180

Machining accuracy class: 8

Maximum number of processing teeth: 250 Maximum rough selling processing module: M10 main Jensen motor power: 3 (kw).

Processing diameter range: 800 (mm).

Weight: 6800 (kg).

Power Type: Mechanical Transmission.

Commonly used gear processing methods include gear milling, forming grinding, hobbing, shaving, shaping, and expanding gear grinding.

Gear milling: The use of disc modulus milling cutter or finger milling cutter milling gear milling gear belongs to forming method processing, and the cross-sectional shape of the milling cutter tooth corresponds to the shape between the gear teeth. This method has low processing efficiency and machining accuracy, and is only suitable for single-piece and small-batch production.

Forming grinding gear: It also belongs to forming processing, because the grinding wheel is not easy to dress, so it is used less.

Hobbing: It belongs to the expansion method of processing, and its working principle is equivalent to the meshing of a pair of helical gears. The prototype of the gear hob is a helical gear with a large helix angle, because the number of teeth is very small (usually the number of teeth z=1), the teeth are very long, and a worm with a small spiral rise angle is formed around the shaft, and then after slotting and shoveling teeth, it becomes a hob with cutting edge and relief angle.

Shaving: Shaving is a common finishing method for non-hardened tooth flanks in high-volume production. Its working principle is to use the shaving cutter and the processed gear to do free meshing movement, with the help of the relative slip between the two, shave off the very fine chips from the tooth surface, so as to improve the accuracy of the tooth surface.

Shaving also creates drum teeth to improve the position of the tooth surface contact zone.

Gear shaping: Gear shaping is a gear cutting process that uses the expansion method commonly used in addition to gear hobbing. In gear shaping, the shaper cutter is meshed with the workpiece as a pair of cylindrical gears.

The reciprocating motion of the shaper cutter is the main motion of the shaping, while the circular motion of the shaper cutter and the workpiece in a certain proportion is the feed motion of the shaping.

Gear grinding method: The cutting motion of gear grinding is similar to gear hobbing and is a tooth finishing method, especially for hardened gears, which is often the only finishing method. The development method can be ground with worm wheels, conical wheels or disc wheels.

Gear hobbing machines are divided into two categories: vertical and horizontal according to the layout. Most of the large and medium-sized gear hobbing machines are vertical, and the small gear hobbing machines and gear hobbing machines dedicated to processing long shaft gears are all horizontal. The vertical gear hobbing machine is divided into two types: table movement and column movement.

When the vertical gear hobbing machine is working, the hob cutter is installed on the hob spindle, driven by the main motor for rotary motion, and the turret can move vertically along the column guide rail, and can also adjust an angle around the horizontal axis. The workpiece is mounted on the workbench and rotated by the indexing worm gear pair, which together with the movement of the hob constitutes an expansion motion. When hobbing helical teeth, the differential mechanism makes the workpiece rotate accordingly.

The worktable (or column) can be moved along the bed to accommodate different workpiece diameters and radial feeds. The turret of some gear hobbing machines can also be moved along the axis of the hob in order to process the worm gear by tangential feed. The large gear hobbing machine is also equipped with a single-tooth indexing mechanism, a finger milling cutter tool holder and a differential reversing mechanism for processing herringbone gears.

Cylindrical gear processing machines and bevel gear processing machines.

According to the encyclopedia, there are two types of gear processing machine tools, namely cylindrical gear processing machine tools and bevel gear processing machine tools, cylindrical gear processing machine tools - gear hobbing machine, gear shaping machine, gear turning machine, etc., bevel gear processing machine tool processing straight bevel gear: planing machine, gear milling machine, gear broaching machine.

Gear processing machine tools are machine tools that process the teeth of various cylindrical gears, bevel gears, and other toothed parts. Among the various varieties and specifications of gear processing machine tools, there are small machine tools for processing gears of a few millimeters in diameter, large machine tools for processing gears with a diameter of more than ten meters, and high-efficiency machine tools for mass production and high-precision machine tools for processing precision gears.

The success of a machine depends on every component in the machine, and only when they work together can they be used to their maximum efficiency. Even the tiniest gear has its function and value, which is irreplaceable. If someone is missing, the other components will come to a standstill and the entire machine will come to a halt.

Pinion – A pinion that resides deep inside the machine. It works diligently every day, only knows that it has been running with the drive of the motor, and it has no idea that the gear next to it is several times larger, and it is endlessly laughing at it, laughing at it for being very small, and the big gear only needs a slight turn to complete the work, but the small tooth has to run hundreds or thousands of times to complete. They agreed that the pinion was so inefficient that it should be removed.

Tintooth ignored the criticism of himself and continued to work endlessly. However, the poor one has to run hundreds of thousands of times a day, and the tips of its teeth have long been worn out by frequent high-speed operation, so that Changhu's work efficiency is lower than before, and sometimes it will cause neighboring gears to not continue running. The Gear Family, claiming that they could no longer tolerate Pinion's incompetence, vowed to banish Tintint from the machine.

In desperation, Pinion can only pick up the soft and reluctantly leave the machine. Knowing that the little obstacle had been removed, the big gears were overjoyed and immediately ordered Mr. Motor to start so that they could continue their work. But the problem came at this trembling age, even if the motor was running with full strength now, the big gear still didn't move at all.

Just as they were about to complain about a pinion'At that time, the machine grandfather finally couldn't hold his breath anymore, and he said to the gear family in a heavy voice: "Do you know the location and value of each gear? Although the big gear can get a lot of work done with just a little turning, don't forget that the reason why you can turn is because the pinion gear turns desperately!

After listening to the words of the machine grandfather, the crow was silent. Maybe the big gears are regretting it, regretting that they laughed at the little gear that had been working so hard, and regretting that they were so cruel to get rid of it.

There was a sudden clanging outside the machine, and several maintenance workers dismantled the machine and placed a brand new pinion inside. The machine with the new pinion installed, together with the operation of the motor, seems to come back to life, and makes a crisp and smooth work roar. The pinion was spinning fast, a hundred, a thousand, a thousand, ......It's as if it's never tired.

While the big gears are operating, they are greeting the small gears, you salute a word, I salute a word, the scene is not warm and lively. I believe that from now on, the pinion will continue to run so fast, and the big gear will be in awe of the pinion because it can continue to turn.

Gear is a common mechanical transmission device, which is widely used in mechanical engineering, automobile manufacturing, aerospace and other fields. In order to produce high-precision gears, manufacturers need to use the appropriate machine tools for machining.

First, the commonly used machine tool for gear machining is the gear machining center. The gear machining center is an automatic processing device, which uses the lathe method to process the material, and can efficiently process various parts of the gear, such as the top of the tooth, the bottom of the tooth, etc. Gear machining centers have high machining accuracy, high speed, and high efficiency of special sock points, which are widely used in various industries.

Second, gear grinding machines can also be used for gear machining. Gear grinding machines are typically used to machine high-precision large gears. It is a grinding method that is able to eliminate thermal deformation and residual stress during gear machining, making the surface of the gear smoother and finer, and further improving the accuracy and precision of the gear.

Thirdly, the gear planer is another commonly used machine tool for processing gears. It uses the rotation of the tool to cut the material into the shape of a gear. The gear planer is mainly used for processing large gears, which has the characteristics of high processing efficiency and good machining accuracy.

At the same time, it can also carry out mass production and quickly meet the needs on the production line.

In summary, gear machining requires the use of different machine tools. Manufacturers need to choose the right machine based on factors such as the size, shape and precision of the gears to be processed. In the future, with the continuous development of automation technology, the application of gear machining centers will be more extensive, and there will be more new machine tools to provide more choices for gear processing.

There are two types of involute gear processing methods, one is the profiling method, which uses a forming milling cutter to mill the tooth groove of the gear, which is "imitating the shape". The other is Fan Cheng Fa (Zhan Cheng Fa).

1) Hobbing machine hobbing machine: It can process helical teeth below 8 modulus.

2) Milling machine gear milling: straight racks can be processed.

3) Slotting machine shaping: internal teeth can be processed.

4) Cold punching machine: can be chipless processing.

5) Planer tooth planer: 16 module large gear can be processed.

6) Precision Cast Teeth: Cheap pinions can be processed in large quantities.

7) Gear grinding machine: The gear on the precision mother machine can be processed.

8) Die-casting machine casting teeth: most of the processing of non-ferrous metal gears.

9) Gear shaving machine: It is a metal cutting machine tool for gear finishing.