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Gear hobbing machine, 1. Manufactuer, 2. High efficiency, 3. Made in China, 4. CE - details see: https://www.machineto.com/cnc-high-precision-gear-hobbing-machine-10125812

Gear hobbing machine

Technical Parameter:

Y3150E
Max workpiece diameter	500mm
Max hobbing modulus	8mm
Max worktable rotate speed	7.8R/Min
cutter roate speed	40-250/9R/Min
distance between tool rotary center and worktable surface	235-535MM
distance between tool rotary center and worktable center	30-330MM
distance between outer support axis hole face and worktable face	380-630MM
string of cutter stroke	55(Manual)MM
max swiver angel of tool post	240°Deg
max dimension of cutter(diameter×length)	160*160MM
worktable size(diameter× aperture)	φ510*Φ80mm
total power load/main motor power	6.45/4KVA/Kw
Machine dimension(length×width×height)	2440*1360*1800MM
Net weight	4500Kg

Gear hobbing machineintroduction

A hobbing machine is a special form of milling machine that cuts gears. It is the major industrial

process for cutting (as opposed to grinding) spur gears of involute form.

The machine forms the gear via a generating process by rotating the gear blank and the cutter

(called a hob) at the same time with a fixed gearing ratio between hob and blank.

The hob has a profile given in cross section by the fundamental rack for the gear tooth profile and is in the form of a helix so that

the sides of the teeth on the hob generate the curve on the gear. The helix has a number

of cuts parallel to the axis to form the cutting teeth and the profile is suitably relieved to provide

cutting clearance.

For a tooth profile which is a theoretical involute, the fundamental rack is straight-sided, with sides inclined at the pressure angle of the tooth form, with flat top and bottom.

The necessary addendum correction to allow the use of small-numbered pinions can either be obtained by suitable modification of this rack to a cycloidal

form at the tips, or by hobbing at other than the theoretical pitch circle diameter. Since the gear

ratio between hob and blank is fixed, the resulting gear will have the correct pitch on the pitch circle,

but the tooth thickness will not be equal to the space width.

Hobbing is invariably used to produce throated worm wheels, but it is not possible to cut all useful

tooth profiles in this way; if any portion of the hob profile is perpendicular to the

axis then it will have no cutting clearance generated by the usual backing off process,

and it will not cut well. The NHS Swiss tooth standards give rise to such problems. S

uch small gears normally must be milled instead.

Gear hobbing machine detailed photos

If have any question please contact with us at any time.