Welcome, Guest. Please login or register.
Did you miss your activation email?
March 29, 2015, 03:48:26 PM

Login with username, password and session length
Search:     Advanced search
* Home Help Search Calendar Links Login Register
  Show Posts
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 »
381  General CNC Chat / Show"N"Tell ( Your Machines) / Re: 9x20 Chinese Lathe Conversion on: April 24, 2012, 12:48:10 PM
After the headstock had been aligned parallel to the ways by filing its V-guide, it became a bit lower and the tailstock needed to be aligned accordingly. I took apart the top part of the tailstock and milled 0.3mm off from the tailstock base:


Got it aligned to within 0.03mm vertically. It's quite a satisfactory for me.


Dan
382  General CNC Chat / Show"N"Tell ( Your Machines) / Re: 9x20 Chinese Lathe Conversion on: April 23, 2012, 10:46:28 AM
Assembled the cross slide and linear guides and the X axis ball screw. Here are a couple of pictures:





It's just a preliminary assembly test so not all screws are there and it's not tightened yet. All fits nicely and look like it's going to work Smiley

Also made a spacer ring to mount the pulley on the spindle. It was needed because the original pulley was wider being 3 stage and plus there was a gear on the spindle. Just turned down the the original pulley and cut off the required length. Here is the spindle pulley mounted:


Dan
383  General CNC Chat / Show"N"Tell ( Your Machines) / Re: 9x20 Chinese Lathe Conversion on: April 18, 2012, 08:23:04 AM
Thanks for sharing the methods, Hood. While I could think there would be one like the first, the second one is interesting. Not as practical being a few months, but interesting nevertheless. Anyway, parts are sent out and it should take a few days.

Dan
384  General CNC Chat / Show"N"Tell ( Your Machines) / Re: 9x20 Chinese Lathe Conversion on: April 18, 2012, 06:37:29 AM
Got it painted:


I figured I wouldn't paint the aluminium parts. Wasn't sure how this paint would hold up on aluminium so figured I would rather have them anodized. So another little delay Sad

Dan

385  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: April 14, 2012, 05:25:23 AM
I like your chip bin solution on the lathe and I have considered it for my 9x20 lathe, but I was afraid of losing rigidity so will have to manually remove the chip each time Sad

Dan
386  General CNC Chat / Show"N"Tell ( Your Machines) / Re: AL54b (lathe) project from New Zealand on: April 14, 2012, 05:01:50 AM
Looks good so far.

Dan
387  General CNC Chat / Show"N"Tell ( Your Machines) / Re: 9x20 Chinese Lathe Conversion on: April 13, 2012, 03:31:36 AM
LOL Grin

Would love to see it running by Monday myself, but there's a lot of work to be done yet. Next I am going to paint it. Then I am expecting the sheet metal parts to arrive next week and I will have to do some welding and then paint the enclosure and cabinet. Will then assemble it all and start working on the electronics. If all goes well and I don't get distracted by work I expect it running in about 3 weeks.

Dan
388  General CNC Chat / Show"N"Tell ( Your Machines) / Re: 9x20 Chinese Lathe Conversion on: April 11, 2012, 11:47:50 PM
Bored all the timing pulleys. These is the X axis set:


It's a 2:1 reduction as I wanted to increase resolution on the X. The Z is 1:1 since I don't need that high of a resolution but better to have the speed there. This is the Z set with a key slot cut in the ball screw pulley (didn't have enough thickness after boring the 10mm diameter hole to allow for set screws as in the others):


And the spindle set:


Dan
389  General CNC Chat / Show"N"Tell ( Your Machines) / Re: 9x20 Chinese Lathe Conversion on: April 09, 2012, 12:59:50 PM
Here is the X ball screw with a locking nut I made:


It's 12mm diameter 5mm pitch Hiwin ball screw, preloaded to zero backlash. And forgot to mention the Z ball ball screw specs in the previous post: it is 14mm diameter, 5mm pitch.

The ball nut will be mounted to the cross slide with this mounting block:


Dan
390  General CNC Chat / Show"N"Tell ( Your Machines) / Re: 9x20 Chinese Lathe Conversion on: April 09, 2012, 12:52:17 PM
Made a ramp for triggering Z home switch:


It's made from steel and mounted on the bottom of the ball screw mounting block:


Also made a bearing support for the Z ball screw floating end:


Dan
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!