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Gallery, Projects and General => Gallery => Topic started by: sparky961 on January 10, 2015, 02:26:14 AM

Title: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: sparky961 on January 10, 2015, 02:26:14 AM: Admit it guys, who doesn't like putting their hands all over a big fat knob? Now grow up and get your mind out of the gutter! What else would you need a knurler for, but to make various control knobs and such?

Presented here is my own design for a scissor type knurler. It draws upon existing designs and is geared toward small hobby machines like my own. Additionally, there are no complicated parts.

I've attached what drawings I created, and do note that I only use these to assist in the machining. Sometimes I take liberties when I discover something isn't as simple as I thought while looking at the 3D model.

Here's what we're building:

(http://drive.google.com/uc?export=download&id=0B8_6OFGwbsRkSEUxclluMjRublE)

I made parts for this over the course of ... well, I don't remember how long it's been but it's finally done and working so I'm going to skip the build details and just show some pictures.

Some important changes I made, and some I should have:
- Instead of making custom shoulder bolts I made sleeves through which standard fasteners passed
- I made the centre line of the tool the same as the part but the top of the tool should be on the centre line instead.
- Distance between upper and lower arm could be greater, especially for larger diameter parts.
- Slot length in arms should be greater, especially if overall capacity is increased
- Slots for knurls need to be sized to what's available to you

Ok, enough of that boring crap. Here are the pictures...

(http://drive.google.com/uc?export=download&id=0B8_6OFGwbsRkTnBjajdCTl9VcU0)

(http://drive.google.com/uc?export=download&id=0B8_6OFGwbsRkN0s4NlNZTnBVZVU)

(http://drive.google.com/uc?export=download&id=0B8_6OFGwbsRkTmt0VnktdXRhM1k)

And why would we build a knurler if it weren't for the need of knurled knobs?

I've gotten tired of my current setup for adjusting the blade guard/guide on my bandsaw. Because of the minor hassle I probably don't keep it as close to the work as I should.

(http://drive.google.com/uc?export=download&id=0B8_6OFGwbsRkbS1COGtKWkJJT3c)

So these were the first actual knurled part I've ever made. Nifty knobs - 4140 steel too if I recall correctly where the stock came from.

(http://drive.google.com/uc?export=download&id=0B8_6OFGwbsRkNzNpZ3prSGU5R2s)
(http://drive.google.com/uc?export=download&id=0B8_6OFGwbsRkaUo4U2FaUlZQelk)
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: Arbalist on January 10, 2015, 05:41:44 AM: You need to make a knurled knob for your knurler!

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1714.jpg)
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: sparky961 on January 10, 2015, 09:53:50 AM: Quote from: Arbalist on January 10, 2015, 05:41:44 AM
You need to make a knurled knob for your knurler!

Oh, definitely. No point in having a no-knobbed knurler. The bolt I have in it right now is temporary - hopefully not to become permanent.
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: mechman48 on January 11, 2015, 06:20:42 AM: Hi Sparky :wave:

No pics, only boxes with x in them, do you have them in 'Photobucket ' or elsewhere? :scratch:

George
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: sparky961 on January 11, 2015, 07:45:42 AM: Really? I see them here, but I was trying something new this time. They are links to shared Google Drive files.

Do others have the same issue with this post?
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: Arbalist on January 11, 2015, 08:41:04 AM: I'm viewing on an iPad with Safari and the pictures are showing fine.
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: Will_D on January 11, 2015, 08:46:05 AM: No probs on a Win 7 laptop
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: mechman48 on January 14, 2015, 11:25:10 PM: Seems to have resolved itself, nice work
George
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: tom osselton on January 16, 2015, 04:59:52 PM: Nice knurler! Had brainfart though, you still have to adjust the z position to ensure the contact of both wheels, my thought is if the complete head could pivot a small amount up and down it would be self centering equalizing the presure on both wheels but remain rigid in the toolpost! Any thoughts guys?
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: sparky961 on January 17, 2015, 10:38:21 PM: Quote from: tom osselton on January 16, 2015, 04:59:52 PM
Nice knurler! Had brainfart though, you still have to adjust the z position to ensure the contact of both wheels, my thought is if the complete head could pivot a small amount up and down it would be self centering equalizing the presure on both wheels but remain rigid in the toolpost! Any thoughts guys?

The way its designed, it does center itself in the Z direction. The two arms float with respect to the body.
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: tom osselton on January 18, 2015, 11:04:32 AM: Yes I see that now :doh:
Title: Re: Gnarly Knurled Knobs - Don't Knock My Knurler
Post by: stirling lad on February 13, 2015, 06:21:40 PM: some nice work there sparky,,
do you have any details available about how you made your tangental tool? like the angle of the tool steel..

`having seen videos of these tools in action they seem impressive but the price is very scarey!! my sporran went into shock... what's your opinion of them? are they worth the money to buy ? or effort to make ?.

...Mike...