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Richard
I see that John is going to talk about his indexer in the near future.
The ELS also has some indexing capability. The system allows seeing the current chuck position to 0.1 of a degree. I used this yesterday to scratch two lines 180 deg apart on the OD of a job for a further operation. It could be used for engraving a dial. Richard |
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Richard, how is the ELS used for indexing? I do not have ELS running yet, so I am still in the understanding/thinkingboutit phase. Ralph On Thu, Aug 29, 2019 at 9:46 AM Richard <edelec@...> wrote: I see that John is going to talk about his indexer in the near future. --
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer |
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Richard
The ELS options are Feed Control, Taper cutting, Threading, and Indexing
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The control panel for the system has 5 momentary buttons, four in a N E S W layout (cross), and one the the left of this set. The four in the cross can be thought of as up, down, left, right. The other button is the selection button. Presses of the selection key cycles you through the options discussed and their sub options. When you are in the Indexing option the screen will show ??? Req:? 0.00???? z:? 1 ??? Act:? 0.00???? a:? 1 Act: shows the current position of the spindle in degrees z: shows the required number of increments a: shows the current number of increments Req: shows the required angular position for the current increment number Presses of the Up and Down button will increment or decrement the z value Let us assume that we want 100 divisions on the OD of a dial which is in the chuck. We have a Vee shaped tool which we can traverse across the dial OD to leave a groove. Press up to increment z: to 100 Traverse across the dial OD with the tool Press the right button to increment a: to 2 Req: will now show 3.6. Manually rotate the spindle until Act matches Req. If you overshoot you can reverse. Traverse across the dial OD with the tool Press the Right button to increment a: to 3 The display will now show ??? Req:? 7.20 ? ? z:100 ??? Act:? 3.60 ??? a:? 3 Manually rotate the spindle etc etc Some may find this option useful some not but it is there as the use of the encoder for the primary ELS functions makes it available. Any queries just yell. Richard On 29/08/2019 15:10, Ralph Hulslander wrote:
Richard, how is the ELS used for indexing? |
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Hi Richard!
Is there any provision for locking the spindle (mechanically), cross slide (electronically), and/or carriage (electronically) into position during indexing? Some machining operations (drilling, tapping, etc) could cause the spindle to move out of position. Or is this a not usually a problem? Thanks! |
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Hi Eddie, I have several types of spindle lock, see photos.
but you can always mount a gear or index ring on the spindle. Tricky as do not disturb the bearing tension system. I either locate off the 100 mm chuck, with jig bored holes off the perimeter, then I made up a ring that? clamps between the chuck and the spindle flange. later i prefer, as?I now run a 125 mm chuck? regularly and have not bored this chuck perimeter. All holes are 15 degree apart. Good enough for nominal splines and key-ways. The ELS angle display is right on the money comparing my bored ring and chuck holes, or is it the ELS is correct to my bored holes. Either way, the bored holes were put in using the Arduino step indexer. The indexer pin is spring loaded and slides into a body that clamps to the lathe bed. Just unclamp when not required. Regards. -- John |
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Richard
No. Any locks needed to combat rotation, movement or backlash are up to
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the operator. Richard On 29/08/2019 17:25, Fast Eddie wrote:
Hi Richard! |
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Richard
On my lathe I have a section keyed to the spindle with holes to take a
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pin on a lever. This manually engages to lock the spindle to allow the chuck to be unscrewed. If I wanted a Spindle clamp I would remove the lever and replace with a simple OD clamp like a big end on a conrod. I am not too bothered with X and Z as I would be using one or both in a process in conjunction with the indexing capability. Richard On 29/08/2019 19:07, John Lindo wrote:
Hi Eddie, I have several types of spindle lock, see photos. |
John Lindo