Salient Features :

» Heavy duty CNC Gear to bring in more flexibility and productivity.
» 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.
» 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).
» 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.
» 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.
» Differential Mechanism driven through AC servomotor (B-axis) in H400CNC 4A & through differential change gears in H400CNC 3A/2A..
» 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.
» Programming for multiple cuts, feed rate change, feed direction change, dwell time, skip feed, climb & conventional hobbing, etc. provide lot of flexibility to operator.
» Operator messages for hob change, job inspection and total number of components is available.

Salient Features :

» Heavily ribbed bed with flat guideways with good damping, torsional rigidity and stiffness. The table slide moving on bed guideways provides radial feed through manually driven screw and nut.
» Column with suitable ribs is fixed on bed. It houses the gear box with index and differential mechanisms and axial feed change gears. The main motor with speed change gear drive is mounted on top of column. The spindle speed change is effected through speed change gears. Column also houses the machine control panel and electricals.
» Compact vertical slide moves on flat guideways of column. The axial feed is through change gears and precision ballscrew and nut for backlash free axial feed. The vertical slide carries hob head mounted on circular T-slot and worm and worm wheel for swivelling of hob head. A circular scale and vernier are provided for setting swivel angle.
» Rigid and compact hob head mounted on vertical slide carries hob slide and main spindle. A fly wheel is provided to minimise speed fluctuations arising due to intermittant cutting during hobbing. The shifting of hob is manual through screw and nut. The slide is manually clamped after shifting.

Salient Features :

» Better quality output as a result of improved positioning and repeatability of table slide.
» Higher rapid traverse rate ensuring minimum non-productive cycle time.
» Fault diagnosis features available.
» Ballscrew for radial feed.

Infinitely variable axial and radial feeds.

» Better size control due to better positioning accuracy.
» Tool wear compensation.
» Multicut facility ensuring easy hobbing of bigger module gears.
» Auto speed & feed change.