CNC Straight Spur Gear Hobbing Machine For Cranes, Mining, High
Main applications and construction of the machine
The model YKA31160 CNC gear hobbing machine is of 2 axes one: X
axis (radial feed motion) and Z axis (axial feed motion). Both of
them are driven by AC servomotors. CNC control system adopts
Based on the principle of generating method, this machine is
designed to cut cylindrical spur & helical gears, slightly
tapered and crowning gears, as well as worm wheels under radial
feed. Axial and radial motions are driven by servomotors through
pre-loaded ball screw pairs.
This machine is manufactured and accepted in accordance with the
Chinese standard JB/T8360.1-96 “Accuracy Test of CNC Gear Hobbing
Machine”. It can be operated manually or automatically under one or
twice square cycles. According to the module of the gear machined,
under one- or multi- feed finishing cutting, its machining accuracy
can be up to Grade 7 according to the Chinese standard
GB/T10095-2001 “Accuracy for Cylindrical Involute Gears”.
Main functions and construction of the machine
1.With vertical design, column of the machine is fixed and the
worktable is moveable along the guideways of the machine bed in
radial horizontal direction.
2.Main guideways are of V-type ones and coated with Teflon, which
ensure stable transmission.
3.Both axial feed and travel of hob head slide are driven by Z-axis
servomotor. A pressure balance cylinder is designed for the hob
head slide to overcome vibrating resulting from cutting force. A
manual hob shifting mechanism is designed for the hob head.
4.Both radial feed and travel of worktable are driven by the X-axis
5.Hob head swivel can be operated manually. A large spur gear with
good self-locking function is used. Swivel angle readings are
6.High precision roller bearings are used for spindle and key parts
of the transmission chain.
7.High precision worm gearing are used for the worktable indexing
system. The worm wheel is of tin-bronze alloy with good wear
resistance; the worktable is of Cu-Cr alloy and also with good wear
resistance. Its bearing capability is up to 3000kg.
8.Tailstock can travel automatically upward, downward or stop at
arbitrary position controlled by a hydraulic valve.
9.Separated hydraulic system, lubrication and cooling systems are
10.Automatic lubrication is used for indexing worm gearing and each
transmission part; inching lubrication is used for the guideways of
column and machine bed; circulation lubrication is used for hob
Max. workpiece dia.
Without workstay 1600mm
Cast iron: 20mm Steel: 16mm
Hob slide travel
Max. hob dimensions: dia.×length
Max. hob shifting travel
Servomotors for X and Z axes
Axial feed rate range and No. of steps
Radial feed rate range and No. of steps
0.08-0.90 mm/r (stepless)
Center distance between the hob and the worktable
Distance between the hob axis and the worktable surface
Distance between tailstock end face and worktable surface
Hob spindle speed
19~176mm/r (8 steps)
Max. worktable speed
Total power of the machine
Overall dimensions of the main machine: L´W´H
Net weight of the main machine
Heng Yong company gathered many experienced experts. This team is
lead by people have over decades of experience, and filled with
young, energetic engineers. With strong research and developing
ability, our company put extraordinary effort on developing
complete sets of gear machinery. Now we are able to provide our
customer the main products as follows: Gear Shapers, Straight Bevel
Gear Generators, Spiral Bevel Gear Generators, Spiral Bevel Gear
Grinders, Hypoid Gear Testers, Gear Lappers, Gear Quenching Press,
Gear Chamfering Machines, Gear Hobbers, Honing Machines, Vertical
& Horizontal Machining Centers, Special Precision Speed
Reducers, Roll Stander for Seamless Tube Stretch Reducing Mill,
Gear Coupling Family, Low Drive Devices and Environmental
Protective Equipment of 16 kinds, more than 30 families, and more
than 150 types and specifications. The company focus on developing
heavy-duty, large CNC gear machinery, which are urgently needed by
the government and makes industrialize as soon as possible, provide
a great variety of advanced gear machinery to the market. The
company is using the leading 3D designing software for developing
and designing. The company combines producing with research and
development by Cooperating with TIANJIN University and other
colleges for many years.