Gear cutting machine tools and components by MHD Werkzeugmaschinen / MHD

Engineering evaluation and technical components for MHD Werkzeugmaschinen / MHD machine tools: FMZ vertical and horizontal hobbers, SMZ shapers and CNC modernization.

Vertical CNC gear hobbing machines MHD Werkzeugmaschinen / MHD series FMZ

Precision vertical gear hobbing systems MHD Werkzeugmaschinen / MHD models FMZ 200, FMZ 350 and FMZ 500 are engineered for high-speed machining of spur and helical gears up to 500 mm outer diameter. Heavy mineral-damped gray iron beds absorb mechanical cutting vibration.

Direct-drive rotary workpiece table utilizing high-torque motor eliminating backlash
High-performance direct-driven hobbing tool spindle for solid carbide hobs
State-of-the-art Siemens Sinumerik 840D sl CNC unit with high-speed digital drives
Ergonomic 19-inch touchscreen operating interface with graphical programming dialogues

Horizontal gear hobbing machines MHD Werkzeugmaschinen / MHD series FMZ-H

Horizontal gear hobbing systems MHD Werkzeugmaschinen / MHD types FMZ 90H, FMZ 200H and FMZ 300H are designed for precision cutting of spur gears, helical gears and splines on shaft workpieces up to 1200 mm length. Rigid kinematics support rotor and worm gear generation.

Machining long drive shafts up to 300 mm diameter with programmable NC tailstock
Heavy-duty BG3 hobbing milling head featuring dual switchable speed ranges
Preloaded low-friction linear guideways along Z and X feed axes for accuracy
Closed-circuit liquid temperature control cooling both high-speed motorized spindles

Hydrostatic gear shaping machines MHD Werkzeugmaschinen / MHD series SMZ

High-precision gear shaping machines MHD Werkzeugmaschinen / MHD models SMZ 16, SMZ 32 and SMZ 50 produce external and internal spur and helical gears up to 650 mm diameter. Hydrostatic spindle bearings and guideways completely eliminate stick-slip friction and component wear.

Hydrostatic stroking ram bearings and hydrostatic column ways for vibration damping
Electronic gearbox synchronization between shaping cutter oscillation and workpiece table
Reliable generation of internal gear rings and shoulders with tight radial clearance
Adjustable axial slide mechanism facilitating rapid fixture and workpiece setups

Precision direct-drive spindles and rotary tables MHD Werkzeugmaschinen / MHD

Direct-drive machine assemblies by MHD Werkzeugmaschinen / MHD integrate high-torque rotary tables and direct-drive tool spindles. Eliminating mechanical worm-gear gearboxes guarantees superior kinematic indexing precision during gear generation cycles.

Integrated backlash-free torque motors delivering high holding and indexing torque
High-resolution optical angular rotary encoders for positioning feedback
Regulated liquid heat exchangers maintaining thermal equilibrium in spindle bearings
Quick-change HSK tool holders and hydraulic expanding workholding fixtures

Analytical gear inspection instruments MG 280 PC MHD Werkzeugmaschinen / MHD

Universal gear measuring instruments MHD Werkzeugmaschinen / MHD model MG 280 PC perform single-flank and double-flank roll testing for cylindrical and bevel gear sets. The digital analytical software delivers automated geometric quality documentation according to DIN and ISO norms.

Precision single-flank and double-flank rolling gear inspection for gear assemblies
High-resolution digital probes capturing radial runout and total composite error
Automated digital protocol generation conforming to international gear standards
Universal modular fixtures accommodating spur, bevel, worm pairs and gear hobs

Machine modernization and CNC retrofitting MHD Werkzeugmaschinen / MHD

Comprehensive retrofit solutions by MHD Werkzeugmaschinen / MHD restore original manufacturing tolerances for legacy WMW, Modul, Pfauter and Lorenz gear machines. Integrating Siemens Sinumerik 840D sl controls elevates gear cutting equipment to Industry 4.0 standards.

Complete geometric realignment of sliding guideways and precision guideway regrinding
Installation of digital feed servomotors coupled with precision optical linear scales
Deployment of proprietary dialogue software featuring automated gear cutting cycles
Integration of automated ring loaders and overhead gantry automation systems

Engineering Alignment Guidelines for Motor Spindles and Direct-Drive Tables in FMZ Units

During commissioning and preventive maintenance of MHD Werkzeugmaschinen / MHD gear hobbing machines across FMZ 200, FMZ 350 and FMZ 500 series, controlling radial and axial runout of the rotary workpiece table remains paramount.

Service engineers inspect alignment between the hobbing tool spindle and the hob arbor using precision dial gauges reading one micrometer increments.

Direct driving of the workpiece table via high-torque torque motors necessitates routine verification of cooling fluid circuits and calibration of rotary encoders inside Siemens Sinumerik 840D sl CNC systems. Precise speed loop tuning eliminates micro-vibrations during heavy-duty gear hobbing.

Maintenance Procedures for Hydrostatic Guideways and Stroking Rams in SMZ Shapers

The operational longevity of MHD Werkzeugmaschinen / MHD gear shaping machines in the SMZ 16, SMZ 32 and SMZ 50 series depends directly on the hydraulic stability of hydrostatic bearings guiding the reciprocating stroking ram and column ways.

Maintenance teams check oil supply pressures across hydrostatic oil pockets monthly and monitor fluid contamination using differential pressure indicators on high-pressure filter units.

Oil temperature regulation prevents structural thermal expansion of the gray iron machine frame, preserving constant hydraulic film thickness during extended production runs without stick-slip motion.

Kinematic Synchronization and Electronic Gearbox Setup in Sinumerik 840D sl Systems

In MHD Werkzeugmaschinen / MHD gear machines, synchronization between the tool spindle rotation and the workpiece table is achieved through a digital electronic gearbox, eliminating mechanical change gear trains.

Electronics technicians conduct periodic dynamic tracking accuracy tests across rotary axes under diverse cutting feedrates.

When operators alter gear tooth count or module parameters, geometric values are entered via intuitive touchscreen dialogue masks, allowing CNC algorithms to compute exact electronic gear ratios. Routine inspection of fiber-optic drive communication cables prevents transmission noise.

Preventive Care for Horizontal Centers in FMZ-H Series and Steady Rest Tooling

Operating MHD Werkzeugmaschinen / MHD horizontal gear hobbing systems from the FMZ-H series on shaft workpieces up to 1200 mm length requires verification of counter-spindle and tailstock concentricity.

Before clamping drive shafts, operators clean tool spindle taper bores and shaft center holes from residual metal swarf. Linear guideways along X and Z motion axes receive automated periodic lubrication pulses with high-grade grease lubricants.

Clamping hydraulic cylinders and adjustable roller steady rests are inspected under nominal pressure to eliminate workpiece deflection during spline and gear teeth generation.

Analytical Roll Testing Procedures on Gear Inspection Instruments Model MG 280 PC

Metrological inspection of gear teeth geometry on universal MHD Werkzeugmaschinen / MHD MG 280 PC analytical units enables workshop detection of profile deviations.

Double-flank roll testing against a calibrated master gear captures radial composite error and center distance variations throughout a full 360-degree rotation. The integrated digital software plots error curves according to DIN and ISO gear tolerance standards, generating inspection certificates.

Periodic re-verification of contact inductive transducers and electronic zero-point calibration guarantees measurement reproducibility.

Turnkey Modernization and CNC Retrofitting Procedures for Legacy Gear Cutting Machines

Comprehensive modernization of legacy WMW, Modul and Lorenz gear cutting machines performed by MHD Werkzeugmaschinen / MHD involves dismantling worn mechanical gearboxes and relays. Re-machined and precision-ground gray iron machine ways receive ballscrew assemblies and digital AC servo feed motors.

Electrical cabinets are outfitted with Siemens Sinumerik 840D sl CNC packages featuring dedicated gear manufacturing software cycles. Comprehensive geometric alignment tests and trial test gear machining confirm machine compliance with contemporary precision manufacturing standards.

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