Previous in Forum: Friction welding   Next in Forum: Free-Cutting Steel Bars and Sub-Surface Defects
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
3 comments
Rate Comments: Nested
wingman1985
Power-User

Join Date: Jul 2009
Location: China
Posts: 146

Gear Millings vs. Gear Hobbing

11/16/2009 12:21 AM

WHat is the difference between gear milling and gear hobbing?

__________________
 I am not a home work cheater. I am a translator seeking professional help
Register to Reply
Pathfinder Tags: gear
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Good Answers:

These comments received enough positive votes to make them "good answers".
2
The Prof
Guru
Engineering Fields - Mechanical Engineering - New Member Hobbies - CNC - New Member

Join Date: Aug 2006
Location: Western Australia
Posts: 767
Good Answers: 58
#1

Re: gear milling and gear hobbing

11/16/2009 4:19 AM
I make the assumption that you know what milling means. here is a simple description of hobbing. Hope it helps.

Gear Hobbing

 Gear hobbing is a multipoint machining process in which gear teeth are progressively generated by a series of cuts with a helical cutting tool (hob). Both the hob and the workpiece revolve constantly as the hob is fed across the face width of the gear blank.

Process Characteristics

Is a gear generating process that uses a helical hob cutter
Cutters and blanks rotate in a timed relationship
Maintains a proportional feed rate between the gear blank and the hob
Cuts several teeth on a progressive basis
Is used for high production runs
__________________
 If you can't explain it simply, you don't understand it well enough. (A.E.)
Register to Reply Good Answer (Score 2)
Go to Next Good Answer
wingman1985
Power-User

Join Date: Jul 2009
Location: China
Posts: 146
#2
In reply to #1

Re: gear milling and gear hobbing

11/16/2009 7:03 PM

thanks for the assist.

__________________
 I am not a home work cheater. I am a translator seeking professional help
Register to Reply
2
Tazzy
Member

Join Date: Nov 2009
Posts: 5
Good Answers: 1
#3

Re: Gear Millings vs. Gear Hobbing

11/17/2009 8:40 PM

Gear milling is a multipoint machining process in which individual tooth spacings are created by a rotating multiedge cutter having a cross-section similar to that of the generated teeth (involute). After cutting each space, the gear is returned to its original position, and the gear blank is indexed for the next cut.

Process Characteristics

Uses a rotating form cutter
Gear blanks are indexed after each cut
Gear teeth are produced individually
Requires deburring
Is a low production process
Is normally used only when generating processes (i.e., hobbing, shaping) are unavailable
Register to Reply Good Answer (Score 2)
No more Good Answers.
Register to Reply
Have a Different Question?
3 comments

Good Answers:

These comments received enough positive votes to make them "good answers".
Copy to Clipboard

Users who posted comments:

Tazzy (1); The Prof (1); wingman1985 (1)

Previous in Forum: Friction welding   Next in Forum: Free-Cutting Steel Bars and Sub-Surface Defects

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Manufacturing:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (198 right now)
Show Members
Advertisement