lab@motestainstruments.com | Civil and Mechanical Engineering Lab Equipments India China
lab@motestainstruments.com | Civil and Mechanical Engineering Lab Equipments India China
Code: MOT-MTE-0008
Assembly Stationâ€Spur Wheel Worm Gear Mechanism.
Gears transmit rotational movements. They adapt the torques and speeds of a consumer drive
according to demand. The gear unit comprises a worm gear with an upstream spur gear stage.
Combining the two types of gear in a single box enables high transmission ratios to be attained
at high levels of efficiency in a compact space. Worm gears are normally deployed to gear
down, and are mostly selfâ€locking. Typical applications include motor vehicle wiper blades,
escalators, and cable winches. It is used to:
Design and function of a combination gear unit and reading and understanding
engineering drawings
Familiarization with components and assemblies, their design features and functions
Dimensioning exercises, gauging parts, work planning, in particular planning and
presentation of the assembly process
Familiarization with assembly aids and jigs, assembly exercises: assembly of modules
and complete units
Analysis of faults and damage, in conjunction with maintenance and repair steps,
material selection criteria
Gear unit dimensions without shaft couplings: 282x138x188mm, approx. 22kg; Transmission
ratios (spur gear stage: i=2, 83; worm gear stage: i=12, 33; total transmission ratio: i=34,89);
Spur gear stage (pinion: number of teeth: z=24, real pitch module: m=1mm; †gear wheel: z=68,
m=1mm); Worm gear stage (worm: z=3; worm gear wheel: z=37, m=2,578mm); Max. output
torque: 212Nm at 1400minâ€1; Materials (housing: grey cast iron; shafts: heat treated steel;
spur gear wheels, worm: caseâ€hardened alloy steel)
Required accessories: Cutaway Model Worm Gear, Autoâ€Cad Files Worm Gear, Alignment of
Drives, Shafts and Gear).
1 set of instructional material, consisting of technical description of system, complete set of
drawings with individual parts and parts list, description of assembly and disassembly
