{"id":2072,"date":"2019-09-05T09:24:55","date_gmt":"2019-09-05T01:24:55","guid":{"rendered":"https:\/\/www.marketingthiink.com\/?p=2072"},"modified":"2022-10-20T19:58:30","modified_gmt":"2022-10-20T11:58:30","slug":"cnc-nc-programming-routine","status":"publish","type":"post","link":"https:\/\/www.marketingthiink.com\/blog\/cnc-nc-programming-routine.html","title":{"rendered":"CNC NC Programming Routine"},"content":{"rendered":"\n

Do you know how to deal with these problems in CNC machining<\/a>? <\/strong> <\/h2>\n\n\n\n

CNC NC Programming Routine explain your question! More information about CNC machine or router control panel buttons & keys, please read: “what are the mean of CNC machine buttonS & keys?<\/a>“<\/p>\n\n\n\n

\"cnc
cnc machine programming plc<\/figcaption><\/figure><\/div>\n\n\n\n

CNC NC Programming Routine, Normal Machining problems & Solution<\/h2>\n\n\n\n

Overcutting of Machining workpiece<\/a>:<\/h3>\n\n\n\n

over cutting Reason:<\/h4>\n\n\n\n
  1. Ballistic cutter, tool strength is not too long or too small, resulting in tool bouncing cutting tool.<\/li>
  2. The operator operates improperly.<\/li>
  3. Cutting allowance is not uniform. (e.g. 0.5 on the side and 0.15 on the bottom of the curved surface)<\/li>
  4. Improper cutting parameters (such as too big tolerance, too fast SF setting, etc.).<\/li><\/ol>\n\n\n\n

    Improve methods:<\/h4>\n\n\n\n
    1. The principle of using knives\/cutters: big or small, short or short.<\/li>
    2. Add angle clearing procedures, and keep the margin as evenly as possible. (The side and bottom margins remain the same.)<\/li>
    3. Reasonably adjust the cutting parameters and round the corner with large margin.<\/li>
    4. Using SF function of machine tool, the operator can adjust the speed slightly to achieve the best effect of machine tool cutting.<\/li><\/ol>\n\n\n\n

      Centering problems ( to find the position of the machining workpiece in the coordinate system of the CNC machine center.<\/h3>\n\n\n\n

      Reason analysis of centering problems in NC machining process<\/a>:<\/h4>\n\n\n\n
      1. Operator’s manual operation is inaccurate.<\/li>
      2. There are burrs around the die.<\/li>
      3. There is magnetism in the middle bar.<\/li>
      4. The four sides of the die are not vertical.<\/li><\/ol>\n\n\n\n

        Improve centering operation:<\/h4>\n\n\n\n
        1. Manual operation should be carefully checked repeatedly, and the points should be as high as possible at the same point.<\/li>
        2. Use oil stone or file to deburr the periphery of the die and wipe it clean with rags, and finally confirm it by hand.<\/li>
        3. Demagnetize the middle bar before dividing the die. (Ceramic can be used to divide the middle bar or other parts.)<\/li>
        4. Calibration check whether the four sides of the die are vertical. (Verticality error needs to be checked with fitter scheme.)<\/li><\/ol>\n\n\n\n

          Cut tool setting problem:<\/h3>\n\n\n\n

          Reason analysis of cutting tool setting :<\/h4>\n\n\n\n
          1. Operator’s manual operation is inaccurate.<\/li>
          2. Error in tool clamping.<\/li>
          3. The blade on the flying knife is wrong (the flying knife itself has some errors).<\/li>
          4. There are errors between R knife and flat bottom knife and flying knife.<\/li><\/ol>\n\n\n\n

            Improve methods of cutter setting:<\/h4>\n\n\n\n
            1. Manual operation should be checked repeatedly and carefully, and the knife should be checked at the same point as possible.<\/li>
            2. Clean the tool with air gun or rag when clamping.<\/li>
            3. A blade can be used when measuring the tool rod and smooth bottom of the blade on the flying knife.<\/li>
            4. The error between the flat and flying knives of R-knife can be avoided by setting up a tool-setting program separately.<\/li>
            5. <\/li><\/ol>\n\n\n\n

              machine collision – Programming:<\/h3>\n\n\n\n

              Reason of machine collision:<\/h4>\n\n\n\n
              1. Insufficient or no safety height (knife or chuck hitting workpiece when fast feed G00).<\/li>
              2. Writing errors of tool on program sheet and actual program tool.<\/li>
              3. Writing errors in tool length (edge length) and actual depth of machining on program sheet.<\/li>
              4. Writing errors of Z-axis number of depth and actual Z-axis number on program sheet.<\/li>
              5. Error of coordinate setting in programming.<\/li><\/ol>\n\n\n\n

                Improve method:<\/h4>\n\n\n\n
                1. Accurate measurement of workpiece height also ensures that the safety height is above the workpiece.<\/li>
                2. The tool on the program sheet should be consistent with the actual program tool (try to use the automatic program sheet or the picture to produce the program sheet).<\/li>
                3. Measure the actual depth of the workpiece. Write clearly the length of the tool and the length of the edge on the program sheet (the general tool clamp length is 2-3MM higher than the workpiece, and the length of the blade avoids void is 0.5-1.0MM).<\/li>
                4. Take the actual Z-axis number on the workpiece and write it clearly on the program sheet. (This operation is usually written for manual operation to be checked repeatedly).<\/li>
                5. <\/li><\/ol>\n\n\n\n

                  cut tool collision – Operator:<\/h3>\n\n\n\n

                  Reason:<\/h4>\n\n\n\n
                  1. Deep Z-axis tool alignment error.<\/li>
                  2. Errors in the number of collisions and operations (e.g. the number taken unilaterally has no radius of feed, etc.).<\/li>
                  3. Use wrong knife (e.g. D4 knife and D10 knife).<\/li>
                  4. Program error (e.g. A7.NC goes A9.NC).<\/li>
                  5. The handwheel is rocking in the wrong direction during manual operation.<\/li>
                  6. Manual fast feed in wrong direction (e.g. – X press + X).<\/li><\/ol>\n\n\n\n

                    Improve:<\/h4>\n\n\n\n
                    1. Deep Z-axis tool alignment must pay attention to the position of tool alignment. (Bottom, top, analysis, etc.).<\/li>
                    2. The number of collisions and operands in points should be checked repeatedly after they are completed.<\/li>
                    3. When clamping the tool, it should be checked repeatedly against the program sheet and program before loading.<\/li>
                    4. Procedures should go one by one in order.<\/li>
                    5. When using manual operation, the operator himself should strengthen the operation proficiency of the machine tool.<\/li>
                    6. When moving rapidly by hand, Z-axis can be raised to the workpiece and moved.<\/li>
                    7. <\/li><\/ol>\n\n\n\n

                      Surface Accuracy:<\/h3>\n\n\n\n

                      Reason:<\/h4>\n\n\n\n
                      1. The cutting parameters are unreasonable and the workpiece surface is rough.<\/li>
                      2. The cutting edge is not sharp.<\/li>
                      3. Tool clamping is too long and blade avoidance is too long.<\/li>
                      4. Scrap removal, air blowing, oil flushing is not good.<\/li>
                      5. Programming cutter-walking mode, (you can consider milling as far as possible).<\/li>
                      6. Workpiece has burrs.<\/li><\/ol>\n\n\n\n

                        Improve:<\/h4>\n\n\n\n
                        1. Cutting parameters, tolerances, allowances and speed feed should be set reasonably.<\/li>
                        2. Tools require operators to inspect and replace them irregularly.<\/li>
                        3. When clamping the tool, the operator is required to clamp it as short as possible and the blade avoidance is not too long.<\/li>
                        4. For flat knife, R knife and round nose knife, the setting of speed feed should be reasonable.<\/li>
                        5. Workpieces have burrs: the root of our machine tools, cutting tools, the way we move the knife has a direct relationship. So we need to understand the performance of machine tools and repair burred edges.<\/li><\/ol>\n\n\n\n

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                          Do you know how to deal with these problems in CNC mach … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[5,68,69,67,70],"_links":{"self":[{"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/posts\/2072"}],"collection":[{"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/comments?post=2072"}],"version-history":[{"count":1,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/posts\/2072\/revisions"}],"predecessor-version":[{"id":2075,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/posts\/2072\/revisions\/2075"}],"wp:attachment":[{"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/media?parent=2072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/categories?post=2072"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/tags?post=2072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}