+- MetalworkingFun Forum (http://www.metalworkingfun.com)
+-- Forum: Machining (http://www.metalworkingfun.com/forum-5.html)
+--- Forum: Projects (http://www.metalworkingfun.com/forum-7.html)
+--- Thread: Todays Project - What did you do today? (/thread-727.html)
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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
RE: Todays Project - What did you do today? - stevec - 03-24-2014
(03-23-2014, 07:55 PM)PixMan Wrote: I took the nut out of the chuck thinking it would run down the whole thread, not so. I had to put it back in and take another thousandth or two. That's a pain in the butt!
I hesitate to say this Ken but, nyah, nyah, I told you so.
Glad you were able to correct it.
RE: Todays Project - What did you do today? - PixMan - 03-24-2014
Still not sure why it did that because there really doesn't seem to be ANY taper in the screw.
If you've ever made mating Acme screws you would know just how oddly they fit together. The tiniest change in pitch diameter or thread form can be the difference between binding up, smooth fit or just plain wonky fit. The nut now sails from end to end on the screw and there's no measureable difference in clearance anywhere.
RE: Todays Project - What did you do today? - TomG - 03-24-2014
Nice job on the nut Ken (and the tool). It looks like you got a good grade of bronze for machining.
Another easy way to reacquire a thread is to run the tool into the bore with it retracted and stop the spindle with the lead screw engaged. Then you can sort of feel your way into the thread using the compound and cross slide to get close and finish up under power (cross slide till it touches and compound to depth). It's definitely easier on coarse threads than fine ones.
What more needs to be done on the screw?
Tom
RE: Todays Project - What did you do today? - PixMan - 03-24-2014
Exactly what I did Tom.
What's left to do with the screw is to turn the 20mm diameter and M12x1.75 thread, them mill keyways and drill a hole through it. Look for Darren's print in the Milling Machine section under Kondia rebuild thread.
RE: Todays Project - What did you do today? - Mayhem - 03-25-2014
The hole through the key slot confuses me. I cannot see a function for it other than to knock the key out should it get stuck. There are other shafts with key slots on this mill that don't have a through hole, so it is not a consistent feature.
RE: Todays Project - What did you do today? - stevec - 03-25-2014
Darren is it possible that under a previous ownership, whatever it is that is now held by the keyway was once pinned to the shaft?
Is it a straight key or a woodruff? Maybe the hole was to pin the straight key?
RE: Todays Project - What did you do today? - PixMan - 03-25-2014
Attached the prints he sent me. You can see the 3.5mm hole going through the shaft for no readily apparent reason other than to perhaps make it weaker.
If anything could use that hole as a knockout, it should be that blind 5mm pin hole!
RE: Todays Project - What did you do today? - Mayhem - 03-26-2014
Steve - I'm currently in Europe at a meeting, so I cannot refer to the original Kondia drawings. However, I don't believe that the shaft has been modified.
RE: Todays Project - What did you do today? - dallen - 03-26-2014
only have three more of these to make, X Axis bearings for a router I'm working on.
open to suggestions on how to do snap ring grooves I need one in each end of the bore to hold the bearing in place.
![[Image: X-Axis-bearing-bloxk0001.jpg]](http://s1222.photobucket.com/user/Superdave257/media/X-Axis-bearing-bloxk0001.jpg.html)
RE: Todays Project - What did you do today? - Hawkeye - 03-26-2014
I've been wanting to make a two-in-one wrench for my QCTP for some time. I managed to slip it into the lineup after work today.
The main nut on the tool post is different than the one for the four-way tool post, so using sockets makes the most sense. I started with a pair of drive adapters for 3/8" and 1/2" drive. I turned a short piece of steel with bosses on the ends to fit the inside parts of the adapters.
[attachment=8003]
I welded the adapters to the centre piece and drilled and tapped it for a threaded handle I had kicking around.
[attachment=8004]
From this ...
[attachment=8005]
To this.
[attachment=8006]