Cylinder Honing: Difference between revisions
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=Summary= | |||
*Honing may be considered a self-truing grinding process - [https://en.wikipedia.org/wiki/Honing_(metalworking)#Process_mechanics] | '''Honing provides a precise finish of a cylinder to accept a piston, while retaining a cross-hatch imperfection that allows oil to remain on the walls to promote lubrication''' | ||
=Basics= | |||
*The Application of the Process of Honing to [[Engine Cylenders]], [[Pnuematic Cylenders]], [[Hydraulic Cylenders]], and the like | |||
*Gives a precision finish to the cylinder bore | |||
*Honing may be considered a self-truing grinding process - [https://en.wikipedia.org/wiki/Honing_(metalworking)#Process_mechanics]. '''As a result of the averaging effect, the accuracy of a honed component often exceeds the accuracy of the machine tool that created it. | |||
''' | |||
=Other Means to Bore Finishing= | =Other Means to Bore Finishing= | ||
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*Drilling - good for only 10 mil in 1" or larger drills - [https://www.engineersedge.com/manufacturing/drill-mechanical-tolerances.htm] | *Drilling - good for only 10 mil in 1" or larger drills - [https://www.engineersedge.com/manufacturing/drill-mechanical-tolerances.htm] | ||
*Milling holes - 1 mil with a boring bar [https://www.google.com/search?q=boring+bar&client=ubuntu&hs=tYt&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjIq4Czi57hAhWBr4MKHaPJAy4Q_AUIECgD&biw=1041&bih=513], from Practical Machinist - [https://www.practicalmachinist.com/vb/general/machining-precise-hole-156518/] | *Milling holes - 1 mil with a boring bar [https://www.google.com/search?q=boring+bar&client=ubuntu&hs=tYt&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjIq4Czi57hAhWBr4MKHaPJAy4Q_AUIECgD&biw=1041&bih=513], from Practical Machinist - [https://www.practicalmachinist.com/vb/general/machining-precise-hole-156518/] | ||
=Seamless Tube, Seamed, and DOM= | =Seamless Tube, Seamed, and DOM= | ||
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*Seamed is welded | *Seamed is welded | ||
*DOM is welded then drawn over a mandrel | *DOM is welded then drawn over a mandrel | ||
*This supplier uses DOM and seamless for hydraulic cylinders - [http://teamtubellc.com/en/products/honed-tubing] | |||
=Cost= | |||
*Metals by the foot - 12" of 4.5"x0.25" tubing - $44 - [http://www.metalbythefoot.com/] | |||
=Useful Links= | |||
*[https://en.wikipedia.org/wiki/Honing_(metalworking) Wikipedia Page on Honing (in a metalworking context)]] | |||
Latest revision as of 23:49, 11 April 2020
Summary
Honing provides a precise finish of a cylinder to accept a piston, while retaining a cross-hatch imperfection that allows oil to remain on the walls to promote lubrication
Basics
- The Application of the Process of Honing to Engine Cylenders, Pnuematic Cylenders, Hydraulic Cylenders, and the like
- Gives a precision finish to the cylinder bore
- Honing may be considered a self-truing grinding process - [1]. As a result of the averaging effect, the accuracy of a honed component often exceeds the accuracy of the machine tool that created it.
Other Means to Bore Finishing
- Dedicated machines and cutters can also be used (boring machines), but the boring bit can also be mounted on a mill - [2]
- Drilling - good for only 10 mil in 1" or larger drills - [3]
- Milling holes - 1 mil with a boring bar [4], from Practical Machinist - [5]
Seamless Tube, Seamed, and DOM
- DOM has a seam, so it's not seamless. It is processed over a mandrel to hide seam.
- Seamless is actually extruded - a seam is never formed
- Seamed is welded
- DOM is welded then drawn over a mandrel
- This supplier uses DOM and seamless for hydraulic cylinders - [6]
Cost
- Metals by the foot - 12" of 4.5"x0.25" tubing - $44 - [7]