Shop made Knurling Tool

Advert

Shop made Knurling Tool

Home Forums Workshop Tools and Tooling Shop made Knurling Tool

Viewing 25 posts - 1 through 25 (of 25 total)
  • Author
    Posts
  • #213192
    Vic
    Participant
      @vic

      I noticed on another thread that other folks have also made their own shop made Knurling tools so I thought this thread might be a nice reference for anyone thinking of making their own as well. So, post of pictures of your shop made knurlers here if you like. This is my effort.

      Advert
      #17900
      Vic
      Participant
        @vic
        #213198
        Neil Wyatt
        Moderator
          @neilwyatt

          Just in case anyone is likely to be put off by sophistication and fine finish. This one had given about ten year's good service before it was adapted to fit my QCTP. Capacity about 1".

          Neil

          QCTP Knurling Tool

          #213200
          pgk pgk
          Participant
            @pgkpgk17461

            I made this one..**LINK**

            Simple enough, rigid etc. I'll try to take and upload a pic but with rural internet speeds….

            #213202
            Involute Curve
            Participant
              @involutecurve

              I made this as an apprentice, must have been used thousands of times over the years…..

               

              image00002.jpg

              Edited By Involute Curve on 19/11/2015 17:40:07

              #213214
              John Stevenson 1
              Participant
                @johnstevenson1

                Don't laugh but here's mine.

                 

                 

                Looks weird but it's a cut knurling tool for straight knurls, cut knurling tools for diamond knurls have straight wheels.

                Yes I know doesn't make sense but it's the geometry and the action.

                 

                This one get some serious action when doing straight knurls on motor shafts which have to be dead straight. In the first picture there are two vertical jacking screws that allow you to twist the main spindle carrying the wheel and by this action you can 'steer' it.

                 

                Works very well and being a cutting action you don't need the pressures that are normal with crush type tools.

                When doing steel I run at about 350 revs and a feed of "Jesus H Christ with a Bridgeport – that was fast "

                 

                This is what you get.

                 

                 

                So it's not all about looking pretty.  wink 2

                 

                 

                 

                 

                Edited By John Stevenson on 19/11/2015 18:40:46

                #213215
                Involute Curve
                Participant
                  @involutecurve

                  John, Do you have drawings for this cut knurl tool?

                  Shaun

                  #213216
                  Thor 🇳🇴
                  Participant
                    @thor

                    Here is the knurking tool I made years ago, it has served me well.

                    knurl9.jpg

                    Thor

                    #213241
                    pgk pgk
                    Participant
                      @pgkpgk17461

                      Finally managed to get pics of mine to upload:

                      cam00325.jpg

                      cam00326.jpg

                      #213245
                      John Stevenson 1
                      Participant
                        @johnstevenson1
                        Posted by Involute Curve on 19/11/2015 18:48:04:

                        John, Do you have drawings for this cut knurl tool?

                        Shaun

                        Sorry no, I never used any, it was a weld it where it touches exercise [ as usual ]

                        I could get some principle dimensions but all that is really needed is to get the centre of the leading edge of the wheel on the centre hight of the machine and get the angle right so that the teeth are horizontal.

                        Away tomorrow and over the weekend but could strip it on Monday and get some better photos so you can see the build up.

                        #213246
                        Roger Head
                        Participant
                          @rogerhead16992

                          JS – I'm not laughing. That's the same action/geometry as in the Quick range of knurlers, but at about 1/1000th of the cost. I've watched these in use (the 2-wheel types), and marvel at the beautifully clean cuts they make.

                          [quote}

                          "Yes I know doesn't make sense but it's the geometry and the action."

                          [quote]

                          Sometimes I think I have it straight in my head, then I start to question myself, and it becomes a circlefrown. The 2-wheel types also have the wheel axes angled forward as well as up/down. Please share if you have any good descriptions of the action.

                          Is yours a LH or RH tool? Reason I ask is because Quick's typical illustrations of their single-wheel products have the wheel canted in the opposite direction, and as most manufacturers typically show their RH products, well…

                          #213255
                          Gary Wooding
                          Participant
                            @garywooding25363

                            Here's mine that I made years ago. I did an article about it in MEW #72.

                            knurl3q.jpgdscf3887.jpgknurlbits.jpg

                            an example of output

                            dscf3884.jpg

                            Edited By Gary Wooding on 20/11/2015 07:16:34

                            #213264
                            Neil Wyatt
                            Moderator
                              @neilwyatt

                              I hope all these different approaches encourage beginners to devise their own solution, as the likelihood of success is high and that's a great encouragement to tackling other projects.

                              One thing we haven't discussed here that beginners need to know, is the need for the spindles to be able to cope with the high loads and hard steel of the knurling rollers. I've made mine from phosphor bronze, and I know others have used hardened and tempered silver steel or hardened dowel pins.

                              Neil

                              #213279
                              Vic
                              Participant
                                @vic

                                Some great Knurling tools here folks. Don't be shy if anyone else has made one, keep the pictures coming!

                                Edited By Vic on 20/11/2015 10:31:54

                                #213282
                                Involute Curve
                                Participant
                                  @involutecurve
                                  Posted by John Stevenson on 20/11/2015 00:17:22:

                                  Posted by Involute Curve on 19/11/2015 18:48:04:

                                  John, Do you have drawings for this cut knurl tool?

                                  Shaun

                                  Sorry no, I never used any, it was a weld it where it touches exercise [ as usual ]

                                  I could get some principle dimensions but all that is really needed is to get the centre of the leading edge of the wheel on the centre hight of the machine and get the angle right so that the teeth are horizontal.

                                  Away tomorrow and over the weekend but could strip it on Monday and get some better photos so you can see the build up.

                                  JS, you take the pics and Ill create a 3D model and send a .step and .iges files to Neil it can then be downloaded by whoever wants it.

                                  Shaun

                                  #213312
                                  Neil Wyatt
                                  Moderator
                                    @neilwyatt

                                    Hi Shaun,

                                    Not sure I can host those types of file here Very limited files types only.

                                    Neil

                                    #213317
                                    Involute Curve
                                    Participant
                                      @involutecurve

                                      We can sort it, I could host it on my site if necessary.

                                      Shaun

                                      #213358
                                      clivel
                                      Participant
                                        @clivel
                                        Posted by Roger Head on 20/11/2015 00:29:29:

                                        Sometimes I think I have it straight in my head, then I start to question myself, and it becomes a circlefrown. The 2-wheel types also have the wheel axes angled forward as well as up/down. Please share if you have any good descriptions of the action.

                                        The Aug/Sept 1991 issue of MEW carries on page 42 a design by Allan Mackintosh for a two wheel "Quick" knurling tool, however It is not quite as straight forward as JohnS's single wheel design pictured earlier in this thread.

                                        Clive

                                        #213407
                                        Roger Head
                                        Participant
                                          @rogerhead16992

                                          Thanks for that Clive. Unfortunately I didn't get into this hobby until 2003, so I only have MEW from #79 onward. I'm in Perth, Western Australia, so my options for accessing a copy are somewhat limited. Besides being Aug/Sept 1991, is there an associated issue # ? It may help in an internet search.

                                          Thanks, Roger

                                          #213410
                                          Muzzer
                                          Participant
                                            @muzzer

                                            JS – presumably in your second photo, the work comes in from the right, keeping the knurl against the holder? Neat concept that I haven't seen before.

                                            Presumably the adjustment of the 2 grub screws is very critical / sensitive to getting the knurls nicely parallel to the axis?

                                            Murray

                                            #213414
                                            Clive Foster
                                            Participant
                                              @clivefoster55965

                                              The three wheel "nutcracker" type knurling tool puts much less stress on the machine than the conventional type as the crushing force is applied by squeezing the handles.

                                              Not quite on topic as mine is a commercial one but a contructional article by R.V.Howis for an essentially identical device with minor simplifications to assist home shop manufacture was published in Model Engineer 29 th January 1999. If I hadn't already got mine I'd have made it having used one at work and found it good. Mine came for free out of a tool dealers scrap bin. Spotted when buying a big Pollard drill.

                                              3 wheel kt pic1.jpg

                                              Works well on most materials although I imagine some of the harder steels might cause problems. Technique is pretty simple but there is a slight knack to picking up a proper diamond knurl due to there being two wheels of the same hand. Basically don't be shy. Get everything moving with the wheels lightly in contact then squeeze fast and hard. Apply a little tilt force, but don't actually tilt it, if you see what I mean, to run from side to side when the knurl is longer than the width of the wheels. Keep running and squeezing until a nce clean knurl of the right depth is needed. I've never bothered with the calculate theoretical depth nonsense.

                                              Clive.

                                              #213423
                                              clivel
                                              Participant
                                                @clivel
                                                Posted by Roger Head on 20/11/2015 23:36:29:

                                                Thanks for that Clive. Unfortunately I didn't get into this hobby until 2003, so I only have MEW from #79 onward. I'm in Perth, Western Australia, so my options for accessing a copy are somewhat limited. Besides being Aug/Sept 1991, is there an associated issue # ? It may help in an internet search.

                                                Thanks, Roger

                                                Hi Roger,
                                                MEW was only numbered from around issue 12. I think that the Aug/Sept 1991 issue was the 6th published.

                                                Issue #166 (Aug 2010) carries an article by Dave Fenner with the another 2 wheel 'Quick' design. This seems a little more complicated to make than the earlier one. The article also includes photographs of a commercial 'Quick' tool. Credit for the photos go to none other than JohnS.

                                                It would be interesting to know what advantage if any, the 2-wheel has over the single wheel tool. If John has used both styles, he may be the best person to answer.

                                                Clive

                                                #213429
                                                Roger Head
                                                Participant
                                                  @rogerhead16992

                                                  Clive, it's obviously not my day. #166 is one of five issues that newsagents have 'forgotten' to save for me over the last 12 years. I did find an article by Dave Fenner in #147, in which JohnS's single-wheel device made an appearance.

                                                  To answer Murray's question – yes, in #147 it appears that the wheel is leading towards the chuck.

                                                  "what advantage if any, the 2-wheel has over the single wheel tool" – don't you need two for diamond knurling?

                                                  Roger

                                                  #213504
                                                  Vic
                                                  Participant
                                                    @vic

                                                    That cut Knurling tool is worth a separate thread if you fancy doing a write up John.

                                                    #213568
                                                    Ian S C
                                                    Participant
                                                      @iansc

                                                      Vic, put Knurling in the search box, you'll find a thread on cut knurling amoung over twenty threads on knurling.

                                                      Ian S C

                                                    Viewing 25 posts - 1 through 25 (of 25 total)
                                                    • Please log in to reply to this topic. Registering is free and easy using the links on the menu at the top of this page.

                                                    Advert

                                                    Latest Replies

                                                    Viewing 25 topics - 1 through 25 (of 25 total)
                                                    Viewing 25 topics - 1 through 25 (of 25 total)

                                                    View full reply list.

                                                    Advert

                                                    Newsletter Sign-up