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Miter Gears
I am looking to make a couple of tables that raise and lower. Each
would have a handle at one end, which when turned lifts or lowers the top. The proposal is to use 2 screws linked to the handle shaft by a 2 pairs of miter gears. I am having trouble finding an econmical source for suitable miter gears. They do not need to be high quality or extremely large, but need to accept/have up to a 3/4" diameter bore. They could even be a strong plastic. Anyone have a suggestion where I could find something suitable; preferrably in Canada? |
Could you use spider gears out of an old differential?
Randy "distracted" wrote in message oups.com... I am looking to make a couple of tables that raise and lower. Each would have a handle at one end, which when turned lifts or lowers the top. The proposal is to use 2 screws linked to the handle shaft by a 2 pairs of miter gears. I am having trouble finding an econmical source for suitable miter gears. They do not need to be high quality or extremely large, but need to accept/have up to a 3/4" diameter bore. They could even be a strong plastic. Anyone have a suggestion where I could find something suitable; preferrably in Canada? |
"distracted" wrote in message oups.com... I am looking to make a couple of tables that raise and lower. Each would have a handle at one end, which when turned lifts or lowers the top. The proposal is to use 2 screws linked to the handle shaft by a 2 pairs of miter gears. I am having trouble finding an econmical source for suitable miter gears. They do not need to be high quality or extremely large, but need to accept/have up to a 3/4" diameter bore. They could even be a strong plastic. Anyone have a suggestion where I could find something suitable; preferrably in Canada? Both Browning and Boston Gear sell such critters here in the States. I can't imagine you couldn't find them in Canada as well. They tend to come with stock bores and are not heat treated so they can be modified to your particular requirements, or used as they come. You could probably select a gear of the right diameter and bore size with a little luck. Here's a link to one supplier: https://sdp-si.com/eStore/Direct.asp...4&CP=Gears.htm If you don't find what you're looking for here, do a search for "miter gears" on http://www.dogpile.com/ where you'll find a large number of suppliers that sell online. Harold .. Harold |
"distracted" wrote: I am having trouble finding an econmical source for suitable miter gears. (clip) ^^^^^^^^^^^^^^ Old car jacks? |
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I am looking to make a couple of tables that raise and lower. Each
would have a handle at one end, which when turned lifts or lowers the top. The proposal is to use 2 screws linked to the handle shaft by a 2 pairs of miter gears. I am having trouble finding an econmical source for suitable miter gears. They do not need to be high quality or extremely large, but need to accept/have up to a 3/4" diameter bore. They could even be a strong plastic. Anyone have a suggestion where I could find something suitable; preferrably in Canada? Is it possible you may be able to use a worm and worm wheel? You could make those on your lathe probably quicker than you can find the proper miter gears you're looking for. Ken |
I used to work where the main computer console table was as you
describe, except they used a link chain and a removable handle. The chain wrapped around sprockets on 4 jack screws within the table top and raised and lowered the top about 18". It was a fairly substantial table, the computer monitors were pretty heavy as was the card reader and other gear. The rear jack screws had square ends recessed on top, the crank fit either one. It was set up with such substantial movement so the operators could either work standing or in an office chair. Management didn't allow lounging around so they were run to the top and the crank handles kept elsewhere. Stan |
Go to a local RV supply store and ask for a cataogue on trailer jacks.
They all come with bevel gears and worm drives exactly like you described. Bugs |
distracted wrote:
I am looking to make a couple of tables that raise and lower. Each would have a handle at one end, which when turned lifts or lowers the top. The proposal is to use 2 screws linked to the handle shaft by a 2 pairs of miter gears. I am having trouble finding an econmical source for suitable miter gears. They do not need to be high quality or extremely large, but need to accept/have up to a 3/4" diameter bore. They could even be a strong plastic. Anyone have a suggestion where I could find something suitable; preferrably in Canada? Two ideas: Volvo screw jacks are quite nice. My Craftsman tabletop 12" planer has bevel gears and two vertical screws. Ken Grunke ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
On Thu, 30 Dec 2004 22:15:46 -0600, Ken Grunke
wrote: distracted wrote: I am looking to make a couple of tables that raise and lower. Each would have a handle at one end, which when turned lifts or lowers the top. The proposal is to use 2 screws linked to the handle shaft by a 2 pairs of miter gears. I am having trouble finding an econmical source for suitable miter gears. They do not need to be high quality or extremely large, but need to accept/have up to a 3/4" diameter bore. They could even be a strong plastic. Anyone have a suggestion where I could find something suitable; preferrably in Canada? Two ideas: Volvo screw jacks are quite nice. Indeed. When I bought my wife a 84 Volvo some years ago, it was missing the jack. I believe I paid $5 for two of them at the local wrecking yard. One remains in her car, and the other, slightly modified, works in conjuction with my Simplex jack for lifting purposes. Gunner My Craftsman tabletop 12" planer has bevel gears and two vertical screws. Ken Grunke ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- "War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stewart Mill |
distracted wrote: I am looking to make a couple of tables that raise and lower. Each would have a handle at one end, which when turned lifts or lowers the top. The proposal is to use 2 screws linked to the handle shaft by a 2 pairs of miter gears. I am having trouble finding an econmical source for suitable miter gears. They do not need to be high quality or extremely large, but need to accept/have up to a 3/4" diameter bore. They could even be a strong plastic. Anyone have a suggestion where I could find something suitable; preferrably in Canada? http://www.mcmaster.com/ has them for $25 each on there online catalog |
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