Not going to work.

The 6mm broach from ARC is 300mm long but the press only has 150mm of daylight.

Even the 3 tonne version of this type of press only has 280mm of daylight.

Sorry but you need a broaching type press as opossed to an arbor press.

I have a 1 Tonne arbor press and have no problems broaching metal of any size, You just need to remember to graduate the cut with bigger sizes, the same way a gun barrel was traditionally rifled by shimming the height of the cutter (albeit in a more complex mechanism).

Often times i use the arbor press to get it started square to the barrel with the appropriate collar, and if i run out of room i place the workpiece in a vice and finish the cut with a hammer, its pretty safe and it works so long as you don't hit like a madman but please dont take that as the gospel.

Ps. I see the image of the work piece you have kindly loaded, I can see why you would want to keyway that, may i recommend that you actually make that whole shaft square? You either file or broach the female part square and it would absolutely hold fast, it's a bit more difficult but the choice you go with will probably be the most sensible one and easier route of broaching a round shaft.

Michael W

Edited By Michael Walters on 27/03/2016 17:42:47

Hi David,

I used a home made slotting tool recently to cut a 4mm wide keyway in a freecutting EN1A. Takes a bit of time but worked well.

Here is a video of how another man cut a keyway, and a description.

Thor

David,

Martin's cross-pinning sounds good [except perhaps for your choice of three spokes]

Alternatives:

1. Woodruff key [only requires broaching the hub, not the shaft]
2. Substitute a cylindrical key [i.e. a dowel], which might usefully be threaded

MichaelG.

.

Note: (2) works for Myford … see fourth picture here

Edited By Michael Gilligan on 27/03/2016 18:41:29

Drill half and half into shaft and handle boss (on the joint line) This assumes that the two are a good fit and tap 6mm, screw in socket grub screw, job done Any slack in the fit and this method is not likely to work as you will not be able to tap the hole. No need to go right through 12/13mm deep should be enough.

For a one off, small part like your example, why not just file the keyway? Takes less time than reading these answers.

David

Just turn off the electric to your lathe. Tie a piece of string round the chuck key and put a weight on the end. Insert chuck key into chuck in the 12 o'clock position, and place a small block of wood under the forward pointing jaw of the chuck, the dangle the weight over the edge of the machine.

Although the method of racking the carriage backwards and forwards to cut a slot sounds hard work it really is very economic in materials and time…and you would get what you wanted.

Pete

The easier alternative, if milling facilities are not available, or where work must be done insitue like here, is to file a simple flat on the shaft and hold the key against this, it's not strictly necessary to use a key seat but the grip is not as good so thats something you have to consider/weigh up.