Rotary broaching (also called wobble broaching in the UK) is readily accessible in the UK. We have some special screws made with hex recesses. I can't remember at the moment who the sub contract company is and I am not in contact with the office for the next couple of weeks. I tracked the...
Uncle Sid
Have you tried researching Wadkin (of Leicester, UK) for your wood milling machine. They were a large producer of woodworking machinery. Although they no longer exist you might find some info on them.
Greg,
Interestingly, in his book "Foundations of Mechanical Accuracy" (1970) Wayne R Moore of the Moore Special Tool Co USA shows an illustration (Page 137 figure 213) of a screw-cutting lathe dating to about 1483. Moore says that this lathe "produced screw threads out of wood and employed a...
When I learnt technical drawing in the old (paper, pencil, drawing board) days, a scrap section is a partial cross sectional view. In other words it is a cross section showing only the important/relevant detail.
Hypoids, worm gears, etc. have a lot of friction as cessna1 says because the worm rubs against the wheel. This is why they are relatively inefficient and thus why they are difficult to back drive especially at higher ratios. The problem is that with any such gearset if there is any significant...
I bought an HP 19C printing calculator back in the mid 1970's. It was the first RPN that I'd used and took some getting used to but after that I found it preferable to DAL. The reason I bought it was that other calculators, at that time, were just not reliable and I was buying a new one every so...
Thanks Cadcamguy, I must be brain dead today.
I had already put some folders in the search.pro and couldn't understand why some of that type of parts were being found but others (the recently created ones) were not.
I am new to ProE Wildfire 2 and have the following problem:
I can open an assembly located in one folder
I can insert a component (a screw from a family table) from another folder. This seems to work ok and the component is placed.
When I reopen the assembly at a later time/date, I get the...
I was sponsored at university by a company; in return I worked for them during vacations and undertook to work for them for a set period after I had graduated. This was the first time that the company had done this kind of thing and there were two of us involved although we were from different...
I am anticipating a situation that may arise.
I am designing a component that is to be sand cast in, say, Aluminium alloy but there may, in the future, be a requirement for the same component in Cast Iron(for the sake of argument lets ignore the actual grades of material).
If we ignore the...
I read somewhere, some years ago (say 10+) of a technique called "explosive bonding" where Al sheet was "joined" to a parent metal by holding/clamping the two pieces slightly apart over a container. An explosive charge in the container forced the Al to close bond with the parent metal. I don't...
