Cnc Machining 101: Welding Vs. Riveting - Merchants ... in

Published Mar 07, 21
5 min read

What Is The Difference Between A Blind Bolt And A Blind Rivet ... in Metropolis, IL

This post is spurred by a conversation with a student the other day. He suggested that we use rivets rather of # 10-32 fasteners to attach a vital piece of structure. My very first response was negative, however I discovered myself unable to articulate a truly great explanation why we need to use fasteners over rivets.

Structural Fasteners – Solid Shank ...flight-mechanic.comAmazon.com: uxcell 50pcs 7mm Hole Push ...amazon.com
BLIND RIVET   FX type / Various ...youtube.comHuck-Clinch® Blind Rivets ...howmet.com

LA Fasteners Inc.

15 W, 650 S Frontage Rd, Burr Ridge, IL 60527
+17084474500
Click here to learn more

Would anybody be willing to share their engineering based opinions about the pros and cons of utilizing rivets vs threaded fasteners in FIRST robotics? Exist particular applications where your team prefers one type over another? Do you have certain design rules, tools, particular rivet part numbers, etc. which you utilize successfully? Would you, for example, usage rivets to connect a plate gear to a versahub? Why or why not? We have actually used rivets sporadically in the past, but it always appears that by the end of competition season, numerous, if not all of them have actually been drilled out and replaced with threaded fasteners.

Here are my observations based upon previous experience. Please correct my misconceptions if your experience states I'm wrong: If parts need to be gotten rid of for servicing the robotic, you should use threaded fasteners. Rivets ought to be used for installations which are anticipated to be irreversible. Rivets are best in shear applications.



Rivets of comparable strength to threaded fasteners (tension and shear) don't provide significant weight savings. Corollary: Replacing a threaded fastener with a lighter rivet results in lowered strength because joint. (The exception may be if use of a rivet results in the removal of a nut) Rivets are most beneficial and have the most possible for weight cost savings when signing up with really thin products (ex 1/16" thick aluminum) which can't be tapped.

What Is The Difference Between A Blind Bolt And A Blind Rivet ... in Lawrenceville, IL

Anybody care to share their experiences? I'm hoping for more in-depth reactions than "We use rivets. They work fantastic for us." How do you use them? What do you do to make them work for you? I like to use them in structural applications. Concept being a general weight savings over numerous primarily long-term joints.

I concur 100% with threaded fasteners for moving parts and modular mechanism user interfaces ToddF: Here are my observations based upon past experience. Please fix my incorrect beliefs if your experience states I'm incorrect: If parts need to be removed for servicing the robotic, you ought to use threaded fasteners. Rivets need to be utilized for installations which are anticipated to be long-term.

Get the best Fasteners coupled with the best pricing and service... Get LA Fasteners

If you understand you require to get rid of a part to service it (or another part) then use threaded fasteners. Snap Fasteners. ToddF: Rivets are best in shear applications. If used in stress applications, they tend to relax in time, and aren't quickly re-tightened except by drilling out and replacing the rivet.

Screws in stress have tension risers at the threads which can trigger the thread to fail. Threaded fasteners tend to loosen up due to vibration. Rivets tend to loosen up due to the fact that they are incorrectly sized (reach is incorrect or hole size is wrong). Rivets only loosen in stress if there is a shock load on them.

Pop® Brand Riveting - Inventor Of The Blind Rivet - Stanley ... in Minonk, IL

If you anticipate heavy shock loads, use threaded fasteners (with Loctite) (American Fasteners). ToddF: Rivets of similar strength to threaded fasteners (tension and shear) don't provide substantial weight cost savings. Corollary: Changing a threaded fastener with a lighter rivet leads to decreased strength because joint. (The exception may be if usage of a rivet leads to the elimination of a nut) Most threaded fasteners are solidified steel.

For the very same strength the rivet will generally weigh 2/3 the weight of screws. ToddF: Rivets are most beneficial and have the most potential for weight cost savings when signing up with very thin products (ex 1/16" thick aluminum) which can't be tapped. Rivets tend to be useful on thin material for that reason as long as the reach of the rivet is proper, nevertheless, rivets likewise conserve weight when the strength of steel screws are not required and nuts can be gotten rid of.

Rivets vs. Boltstheclanproject.orgStructural Fasteners – Solid Shank ...flight-mechanic.com

The very same is real for screws. Soft material ought to always have washers to spread out the load of the fastener (no matter type). Hope that helps. So as a basic basis on my group, rivet if it is non-essential, and bolt it if it is necessary. If the part your protecting will see a great deal of wear and tear throughout the season, bolt it.

There are some applications where we need to use bolts, simply because we can't fit a rivet gun head where we want it. And if you do utilize bolts, keep in mind to either use locknuts, or locktite on routine threaded nuts. We likewise bolt parts that require zero, or close to zero, lossesning throughout the season, due to the fact that if the hole is not best for the rivet, the rivet will lossen, where ever the force.

Navigation

Home