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CNC Aluminium Machining

- Mar 22, 2018 -

CNC aluminium machining

First of all, under the premise of aluminum materials, the following aspects need to be considered:
First, irresistible factors: 1. The stability of the machine itself. If it is not a new machine tool or the machine tool has undergone a lot of machining without debugging, the dimensional error caused by the machine tool itself will occur.

There are several factors that cause the error in the machine tool itself: Mechanical:
a. Loosen between servo motor and screw.
 b. Wear of ball screw bearings or nuts.
c. Insufficient lubrication between screw and nut.

2. The workpiece is cooled and deformed after machining. This is basically unavoidable. Pay attention to the use of coolant as much as possible during processing, and pay attention to the deformation of the workpiece after cooling during in-position measurement.

Second, avoidable factors:
1. In fact, most of the actual machining errors are due to irrational machining processes, and the basic machining process is guaranteed (for example, “rough-to-fine, first-to-rear-hole, first-to-large-face and small-side facet” for milling CNC machining) or In the use of the fixture, "reducing the number of clamping and using the combination of fixtures" and other basic processing details, to minimize the processing error caused by iron filings on the aluminum parts, because the aluminum parts are very soft, and the removed iron scraps easily make aluminum. Pieces cause processing errors. For example, in the FANUC or Huazhong machining center, use the G83 command as far as possible to drill deep holes so that the iron chips can be discharged instead of the G73 command.
2 cutting three elements: cutting speed vc, feed f, cutting depth ap and tool compensation this is really not good to say, in simple terms, is to ensure the quality of processing and tool wear on the premise of adjusting parameters Give full play to the cutting performance of the tool, make the cutting efficiency the highest, and the processing cost is the lowest.

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