Alcance de proyecto para engranajes

Department of Mechanical, Materials
& Manufacturing Engineering

MSc. Coursework
MM3FAM

GROUP REPORT
2010/11 Session

FLEXIBLE AUTOMATED MANUFACTURED

(Due Date: THURSDAY 28th Oct2010)

CARLOS PAGES UREÑA 2107564
ANDRES HERNANDEZ 2107562
FABIAN DUARTE MARTINEZ 4091165

This scope aims to provide a brief description about the part family of two types ofgears. The first one is the Spur gear often used to transmit power between parallel shafts as one of its characteristics, and speaking generally, there are more kinds of machine processes availableto make spur gears than to make any other gear type1. The second type is the helical gear that offers a refinement over spur gears, the main difference lies on the edges of the teeth that are notparallel to the axis of rotation. This type of gear has almost the same manufacturing processes as the spur gear.
The variants for both gears that this coursework will cover are the following:
Number ofteeth
* 25
* 102
Size of the gear
* 32mm face width
* 30mm face width
Machining processes (for teeth)
* Hobbing
* Milling
* Shaping
Gear material
* Steel
Finishingprocesses
* Shaving
* Rolling
* Honing
The production volume will depend on the machining process of each gear, for example, the milling process is adequate for low production ratesbecause it is considered a very slow and uneconomical method of production3. On the other hand, the hobbing and shaping processes are more suitable for high volumes rates of production due to their levelof accuracy2.
According to the information provided above, we estimate the following production volumes:
Spur Gear
Steel gears of 25 teeth and 32 mm face width in a milling process 8000per month
Steel gears of 102 teeth and 30 mm face width in a milling process 4000 per month
Steel gears of 25 teeth and 32 mm face width in a hobbing process 12000 per month...