- Client
- Process equipment manufacturer, Gujarat (name withheld under NDA)
- Industry
- Industrial Machinery & Presses
- Service
- Machine & Equipment Design
- Platform
- SolidWorks
- Client region
- India
- Drive
- 12 × 26T × 3 M gears on individual shafts
- Bearings
- 6004-2Z and 6006-2Z deep groove
- Rollers
- Ø50 pipe rollers, 13 off, on ceramic plates
The challenge
Belt and chain drives were not acceptable in the hot zone, and the rollers had to run at one speed without slip. A gear train meshing from roller to roller gives that, but twelve meshing gears means twelve centre distances that all have to be held in one housing, and the rollers themselves sit on ceramic plates that cannot be used as a datum for anything.
Our approach
All twelve gear shafts run in the same two housing halves, so the centre distances are machined in one setting and the gears mesh consistently. Each shaft carries a 26T × 3 M gear between 6004 and 6006 shielded bearings, with the roller pipe pushed onto the shaft end and retained with a washer and flange nut, so a roller can be changed without disturbing the gear train.
The ceramic support plates and pipe support plates were modelled as supplied components so that the drive housing, the roller centreline and the plate heights all agreed in one assembly. The input is a pipe shaft extended out of the housing for the customer's drive coupling.
The GA drawing carries a 21-item BOM with the housing halves, 12 gear shafts, 13 rollers, ceramic plates and fasteners, and marks the centre-distance and bearing-bore dimensions as critical parameters so the machine shop inspects them first.
What was delivered
A SolidWorks assembly with GA and part drawings was delivered for manufacture; the split-housing design lets the customer build longer conveyors by adding housing modules with the same gear pitch.
- SolidWorks assembly and GA drawing with 21-item BOM
- Housing, shaft and gear part drawings
- Critical-parameter marking for centre distances
- STEP export
Standards and conventions applied
- Customer tolerance table with critical-parameter marking
- ISO 2768 general tolerances
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