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Archive for the ‘flat springs’ Category

Katy Spring & Mfg., Inc | Spring Manufacturer

Thursday, March 22nd, 2012
Please send inquiries to: sales@katyspring.com
 Ph. 281-391-1888

Shipping and Billing Address:
3535 Schlipf Rd
Katy, TX. 77493

Phone: 281-391-1888
Fax: 281-391-0666

Katy Spring & Mfg., Inc. is a custom manufacturer of springs and wire forms, located in Katy Texas.

A few weeks ago, I was taking a customer through the shop, and as we were observing compression, extension, torsion, flat and other springs being manufactured, I started to share a story or two of some of the early days of Katy Spring.

This customer, who uses compression springs in their valve components, got a kick out of one story I told about the first time we received half-inch chrome silicon spring wire for a draw-bar spring assembly job.  This customer suggested I share this story with our other spring customers, so as I think of them I will share them.

Eleven years ago Katy spring & Mfg. had only been in business for a little over a year.  We have spring lathes that can cold wind springs up to .625” spring-tempered wire diameter.  The draw-bar spring required .500 inch diameter spring material so no problem, except most spring manufacturing requires support equipment. Spring lathes use wire reels for larger-diameter spring wire to contain and safely feed the wire into the spring lathe… and we did not have one, because the largest diameter spring wire we previously ran was .250”.

When we received the chrome silicon spring wire, we unloaded the roll of wire, and like a lot of spring manufacturing, started to get creative.  The spring wire roll was banded with metal bands and if we were to just cut the bands with no reel, it could be very dangerous as the spring-tempered wire roll would unravel like a mad octopus of spring wire, damaging or injuring anything in its circumference.

So we drug the roll of wire out to the yard with a fork truck, wrapped it with rope, cut the metal bands (the rope held the roll together… thank goodness) threw gas on the rope, lit the rope, ran way, and a few minutes later we had a heap of half-inch spring wire.  We took a torch out and cut the wire into its developed lengths and ran the draw-bar spring job.

Soon afterwards, we got a spring lathe reel, and today no worries.

It’s just another example of “doing whatever it takes” at Katy Spring.

 

Scott Pitney

 

Press Release 10-25-11 Katy Spring Flat Spring Design

Tuesday, October 25th, 2011

Katy Spring Flat Spring Design | Press Release 10-25-11
© Copyright 2011 KATY SPRING & MFG, Inc.

Shipping and Billing Address:
3535 Schlipf Rd
Katy, TX. 77493

Phone: 281-391-1888
Fax: 281-391-0666

 flat spring

Flat Springs come in endless varieties of shapes, materials and functions.  Flat spring manufacturers form flat springs from flat, strip, spring material that are produced with either squared or rounded edges.   They are considered flat springs, because they are made from flat stock spring steel and perform like coil springs, storing and releasing energy.

Flat springs are typically custom springs and are made from jigs and specialized spring manufacturing tooling built by the spring manufacturer as a one-time spring manufacturing.

Flat spring design formulas can be less accurate than compression spring, extension spring and torsion spring formulas with increased deflection.  It’s recommended that assistance is obtained from the spring manufacturer in designing flat springs.  The spring manufacturer will need to know the space, approximate spring load, and environment that the flat spring will work in, in order to assist with the flat spring design.

Additional information the spring manufacturer may need to know about your flat spring design, is the direction the flat spring will bend.  Additional spring stresses will occur if the flat spring deflects against the grain, or where there are sharp radiuses or where holes are made in the flat spring material.

Because a flat spring may perform any number of functions, there are infinite possibilities for flat spring design. This is why flat springs normally require special tooling. Flat spring tooling can be complex or simple. Depending on the design of the flat spring, the flat spring tolerances specified, and the quantity required.  Because of these variables, check with the spring manufacturer to make sure the flat spring design is cost efficient and sensible to manufacture.

When flat spring material is blanked or stamped a burr may occur which can be removed by tumbling. This may not be a good operation for all flat springs such as small, thin flat spring parts. Sometimes it is possible to control the flat spring burr so it will not interfere with the flat spring application.

It is a good practice on flat spring design to provide liberal radii on corners and formed bends. It is also good to provide sufficient length in these bends to eliminate unnecessary secondary operations. Also, keep all holes well away from edges and bends.

Flat springs begin as an annealed spring strip material and are hardened after forming. Flat springs can also be made from hardened spring strip which is then stress relieved.  Because most flat spring is hardened after forming, Flat spring design typically uses commercial stamping tolerances as a guide.  Special flat spring manufacturing processes, like spring manufacturing jigs and fixtures, can aid in holding very tight tolerances

 

Shipping and Billing Address:
3535 Schlipf Rd
Katy, TX. 77493

Phone: 281-391-1888
Fax: 281-391-0666


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