×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

polymer gear acceptance criteria

polymer gear acceptance criteria

polymer gear acceptance criteria

(OP)
Hi All,
We have not worked with molded gears in the past. We will soon, and are starting the conversation about how to work it into an overzealous QC department. We don't currently have any gear inspection expertise. We have lots of experience with other precision measurement systems, and routinely measure our molded parts to better than .0001". Just not gears.

One option for production involves having gearboxes assembled outside our facility, and simply inspect the functionality in our QC department. (we are not molding these in house- everyone is afraid of plastic gears!)

These are small, light weight units. the intended use is for precision handheld equipment.

The question then becomes: any suggestions in how to achieve a good inspection method?
our idea so far:
"proof" test some quantity/ batch
measure backlash
measure no-load torque

thanks

RE: polymer gear acceptance criteria

Ha I have zero experience with plastic gears, however plenty with steel gears.

A good source of information are the AGMA
Specifications. So apparently a close tolerange measuring instrament.

Two methods to inspect gears
Analytical verification of each attributes
Or verification at a set center distance with a master gear disigned for that gear.

The precision of the gear AGMA 2015 or AGMA
2000 depends on the application.
The back lash will depend on the pitch velicity, and required load.
And if a precision timing is required.
Test the assembly and record if it is precise enough.

RE: polymer gear acceptance criteria

For the gears alone, this might be interesting: "double flank roll testing of gears"

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper - The Criticality of the E/E Architecture
Modern vehicles are highly sophisticated systems incorporating electrical, electronic, software and mechanical components. Mechanical systems are giving way to advanced software and electronic devices, driving automakers to innovate and differentiate their vehicles via the electric and electronic (E/E) architecture. As the pace of change accelerates, automotive companies need to evolve their development processes to deliver and maximize the value of these architectures. Download Now
White Paper - Model Based Engineering for Wire Harness Manufacturing
Modern cars, trucks, and other vehicles feature an ever-increasing number of sophisticated electrical and electronic features, placing a larger burden on the wiring harness that enables these new features. As complexity rises, current harness manufacturing methods are struggling to keep pace due to manual data exchanges and the inability to capture tribal knowledge. A model-based wire harness manufacturing engineering flow automates data exchange and captures tribal knowledge through design rules to help harness manufacturers improve harness quality and boost efficiency. Download Now
White Paper - Modeling and Optimizing Wire Harness Costs for Variation Complexity
This paper will focus on the quantification of the complexity related costs in harness variations in order to model them, allowing automated algorithms to optimize for these costs. A number of real world examples will be provided as well. Since no two businesses are alike, it is the aim of this paper to provide the foundational knowledge and methodology so the reader can assess their own business to model how variation complexity costs affect their business. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close