Q:Din 5480 8j precision involute spline with what grade of hob processing?

Using DIN 5480 8j spline hob precision machining of involute spline, spline hob processing made available but the bottom diameter (darker than DIN 5480, hob) my previous company production of planetary reducer and excavator, frequent contact

Q:What is the "hob" knife?

Hob cutting methodOn the left hand material rolling; right hand cut down with the raw material, the cutting knife rotating a cut, to master a certain inclination, cut into the water block, comb back block or hob block shape. Applicable to the quality of crisp food raw materials, such as carrots, potatoes, cucumber and so on.

Q:Recently, the design of gear hobs and their machining helical gears have been studied! Encountered some problems, I would like to ask for advice! Given the modulus, pressure angle, surface and axial dimensions of gear hob basic parameters such as displacement coefficient which is? There is the use of gear hob to process a bevel gear, the workpiece rotates, a tilt angle of the cutter, moving from top to bottom, is excuse me, the method of helical gear surface machined out of the relationship with the gear hob surface and axial dimensions, is gear hob surface, generating the the method of helical gear surface size?

Because the hobbing process is along the normal direction, so we should know the normal form of the hob. This can be regarded as a rack, and the extension should be normal to the helical gear. But the design is basically not the same. Now computer operations are powerful, all through meshing calculations. The above point of view is for reference only...

Q:What are the main causes of hob breaking?

(1) helical rolling wheel indexing hanging off, (Y38-1, Y3150) indexing hanging round off, the table does not turn, turn the cutter knife, broken teeth. The differential gear shedding (Y3150E, Y3180H) differential gear off the bench or turn. (2) head screw clearance large, in the processing process, the knife suddenly sank (inverse milling often), caused by the amount of feed is too large, not only from the sometimes broken tooth hob groove crack, the entire knife scrap (3) processing the material hardness is too high or too soft, also to the broken tooth cutter

Q:Why is the front rake hob good for chip removal?

In my understanding, the front corner is the angle formed by the front face and the vertical direction. Thank you for your communication

Q:Grinding wheel for grinding hob

White corundum is not good, we've also used it, the efficiency is low, the old want to repair the wheel, now back to the jade white jade et al than use a lot.

Q:What is the difference between worm gear hob and gear hob?

There are many forms of worm gear and the parameters of hob are different. The common Archimedes cylindrical worm gear mechanism, the worm gear hob shaft surface tooth shape is the standard modulus, the standard pressure angle (common is 20 degrees), and the gear hob usually is the surface tooth shape as the standard value.

Q:When machining M3 worm gear on Y3150 hobbing machine, how to determine the rotation angle and direction of hob cutter head?

When using worm gear hob, the tool holder is zero to zero. Sub gear: clutch to the straight gear processing position, differential open, hang 36 teeth fixed number wheel, but with fixed number wheel 24 than worm gear teeth number to calculate the number of 4 teeth.

Q:Experts, EG, how much is the hobbing hob used in the actual production of engagement? Feed rate? What is the effect of spindle speed, machining accuracy? What is the M2 M2.5 M3 M3.5 M4 M5 / M6 M7 M8 M9 M10 engagement, the lathe is Chongqing 3180 thank you teachers, generous with your criticism

All kinds of modulus gear feed is not the same, generally the first knife is bigger, the back a few small knife. But some have a knife to survive.

Q:Hello everyone！ I would like to ask about the difference between variable displacement hob and non variable hob First of all, is there any difference between the non - variable and modified gears in the design of hobs? If it's different, please give me more details, thank you!

The design modulus of the shift gear hob is different from the product modulus!