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Salient Features : |
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Heavy duty CNC Gear to bring in more flexibility and productivity. |
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HMT Gear Hobbing Machine H400CNC, with its principle of
power transmission from motor to hob through shortest path possible is designed
to deal with the static and dynamic requirements that would yield ideal tooth
form in spite of interrupted cuts peculiar to hobbing processes. |
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Radial Feed (X-Axis) :- Designed to give more accurate
and desired positioning with high precision ballscrew through AC servomotor. Ensures
control over size through rotary encoder for positional feed back. Multiple cuts
can be programmed enabling to cut gear of higher module (> 8 mm). |
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Axial Feed (Z-Axis) :- AC Servomotor having position feed back through
a rotary encoder ensures precise axial feed through ballscrew. AC Servomotor with
mechanical fail-safe brake prevents vertical slide inching down during power off/power
failure. Optimum cycle time can be achieved by programming higher feed rates during
approach and at the end of cut where material removal is less. |
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Tangential Feed (Y-Axis) :- Is through precision
ballscrew driven by AC Servomotor and feed back through rotary encoder. Infinitely
variable tangential feed is provided in H400CNC 4A and stepped hob shift in H400CNC
3A that enable precise orientation of gear teeth. Stepped hob shift in H400CNC
2A is through hydraulics. |
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Differential Mechanism driven through AC servomotor (B-axis)
in H400CNC 4A & through differential change gears in H400CNC 3A/2A.. |
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AC Spindle drive & motor for infinitely variable spindle speed offers greater
flexibility for cutting gear at different speeds during roughing and finishing
to obtain optimal cycle time. |
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Programming for multiple cuts, feed rate change, feed direction change, dwell
time, skip feed, climb & conventional hobbing, etc. provide lot of flexibility
to operator. |
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Operator messages for hob change, job inspection and total
number of components is available. |
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Maximum dia of spur and helical gear |
mm |
400 | 400 | 400 |
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Maximum module (in Steel 60-70 kgf/mm2) |
mm |
8 |
8 |
8 |
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Maximum travel of hob slide |
mm |
300 | 300 |
300 |
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Minimum number of teeth that can be hobbed |
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6 | 6
| 6
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WORKING
RANGE |
Dia. of work table |
mm | 400
| 400 | 400 |
Work table
bore dia |
mm |
100 | 100 | 100
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Distance between hob & work axes Shifting hob head (min. / max.)
Universal
hob head (min. / max.) | mm |
-- 10 / 280 | --
10
/ 280 | 30
/ 300
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Mounting taper of hob spindle |
|
MT5 |
MT5 |
MT5 |
Hob
: Maximum dia. x Maximum length | mm | 186
x 180 | 186
x 180 | 186
x 180 |
Maximum
hob shift
Shifting hob head
Universal hob head | mm
mm | --
170 | --
170 | 135
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SPEEDS
& FEEDS |
Speeds
: AC Servomotor
Feeds infinitely variable in the range Radial feed (X-Axis)
Tangential feed (Y-Axis)
Axial feeds (Z-Axis) | rpm
mm/min
mm/min
mm/min | 80-480
1-3000
1-325
1-1000 | 80-480
1-2000
1-325
1-1000 | 80-480
1-2000
--
1-1000 |
POWER |
Main
Motor - Infinitely variable speed spindle drive - 500-3000 rpm | kW | 9.0 | 8.0
| 8.0 |
Total
connected load | kVA | 25 | 25 | 25 |
Space requirements & weight> |
Overall
dimension of the machine (lxwxh) | m | 3.6
x 3.4 x 2.9 |
Approximate weight | kgf
| 7000
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