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Last modified by writer on 2023/06/14 14:08
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1 In the process, the need periodically arises to stop the execution of the G-code, perform technological operations while moving the tool, and return to the original path. You also often have to run the G-code not from first, but from a specific line, for example, to process one of several blanks contained in the G-code. PUMOTIX software solves both of these problems, allowing you to continue executing G-code from an arbitrary line without losing coordinates.
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3 Preparation movement is carried out from the current position to the beginning of the selected line, i.e. actually to the end of the previous line. For example, in the G-code
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5 (% style="color: rgb(160,190,45);" %)
6 //**N99 G0 Z30**//
7 //**N100 G1 X200 Y300**//
8 //**N101 G1 X250 Y300**//
9 //**N102 G1 X250 Y400**//
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11 we will select line No. 101 and press "Start". The Preparation movement to the point (X200; Y300; Z30) will be performed and the execution of the G-code from line No. 101 will continue.
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13 [[An example of the preparation movement>>image:attach:image2019-6-4_16-47-7.png||alt="An example of the preparation movement" data-xwiki-image-style-alignment="center" height="400" width="721"]]
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15 PUMOTIX allows you to select __a preparation move strategy__:
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17 * **in a straight line** (with a specified feed);
18 * **in a straight line (G0) + Z** (with the specified feed);
19 * **sequentially** (with the specified feed).
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21 [[Choosing a tool return strategy>>image:Preparation Move Strategy.png||alt="Choosing a tool return strategy" data-xwiki-image-style-alignment="center" height="400" width="431"]]
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23 Preparation movement **"Straight line"** with the specified feed is carried out immediately on all axes with a predetermined return feed. Those. The tool will move to the beginning of the selected line, choosing the shortest path along each of the axes of movement.
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25 Moving **"Straight line + Z"** occurs sequentially along the X, Y, A, B, C, U, V, W axes at fast feed, and then along the Z axis - at a given feed.
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27 **"Sequential"** movement is carried out in the order set by the user. By default, movement along the A, B, C, U, V, W axes will be performed first, then along X, Y, and lastly along Z. The feed will be carried out at the set return speed.
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29 The figure below shows how, when starting the G-code execution from the specified line (path 4), the X moves first (line 1), then Y (line 2), and then the spindle goes down Z (line 3) to the beginning of the selected strings.
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31 [[The sequence of movement of the tool along the axes during the preparation movement>>image:attach:image2019-6-4_16-48-9.png||alt="The sequence of movement of the tool along the axes during the preparation movement" data-xwiki-image-style-alignment="center" height="400" width="719"]]
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33 The choice of the tool return strategy is carried out in the “Settings” tab “Tool” → “Preparation Move Strategy”. There you can also set the feedrate with which the preparatory movement is carried out (1000 mm/min by default).
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35 In any case, the operator, after stopping the execution of the G-code, must manually raise the tool along the Z axis, perform the necessary manipulations, then set the tool at a safe height above the point where the preparation movement will be performed (approximately so that there are no obstacles when moving along X and Y) . After that, you can click the "Start" button.