CONTAINS COLOR
A new jobbing system for manufacturing bevel and hypoid gearswas developed during the past three years. In spite of the existingold European jobbing systems, the new system uses a simple one-partcutter head with stick blades. A range of gears with an outerdiameter of 3 to 35 inches can be covered with three cutter headsizes. The cutter heads only have five starts, each start havingone inside and one outside blade. This configuration enables themanufacturer of industrial gear boxes the flexibility to producebevel gears of any size and specification with an extremely lowinvestment. The calculation of tooth contact analysis, ease off andmachine settings are done with a PC program which gives themanufacturer flexibility and independence. The gears produced withthis method can be matched to existing old gearsets produced on oldequipment with different cutting methods. A special softwarepackage was created, which allows the modeling of a new gearset inorder to duplicate old gearsets. Productivity and accuracy of thenew method is remarkably high. Noise optimizations are easilypossible by using computerized optimization tools. To account forthe needs and requirements of gear box manufacturers, a skivingprocess using carbide tools was developed as a finishing operationafter heat treatment. The presented paper explains the geartheoretical basics of the new jobbing method. In addition, it tellsabout machines, tools and processes and reports about threerealized examples out of the daily praxis of gear boxmanufacturers.
- Edition:
- 97
- Published:
- 11/01/1997
- Number of Pages:
- 17
- File Size:
- 1 file , 13 MB
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