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Wharbo Precision Manufacturing Co.,LtdChina precision machining parts manufacturer,Custom CNC machined parts supplier |
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Tech Info
Factors you need consider for CNC machining
1.The dimensioning on the print should be convenient for programming principles
Dimensioning methods should be adapted to the characteristics of the CNC machining on the darwings of CNC machining parts,reference citations should be the same size or given coordinate dimensions directly. This dimensioning method is convenient for both programming and the coordination between the size, bring great convenience to maintain consistency in the design basis, the benchmark technology, detection reference datum setting and programming. Since the parts designers generally considered more dimension in assembly and other aspects of the use of properties,they have to use a partial dispersion Tagging.This will bring a lot of inconvenience to the work arrangements and CNC machining. Since the NC machining accuracy and repeatability of positioning accuracy is very high, will not produce large accumulated error undermine the use of features, so it can change partial dispersion method to the datum mark baed method or given coordinate dimension directly.
2 geometry elements constitute the contour part should be completed
When manual programming to calculate point or node coordinates. When auto programming, all geometric elements are defined contour parts. Therefore, when analyzing the parts diagram, to analyze geometric elements of a given condition is sufficient. Such as arc and a straight line, arc and arc tangent on drawings, but according to the size of the figure given in the calculation of tangency conditions, into or away from the intersection of state. Since the elements constituting the part geometry conditions is not sufficient, so unable to start programming. When this happens, the designer should be resolved through consultation with the part.
3. part constructions and process should be suitable with the characteristics of CNC machining
1) the cavity and the shape of a part best uniform geometry types and sizes. This can reduce tool size and number of tool changes, easy to make programming,so production efficiency is improved.
2) the size of the groove fillet determines the size of the tool diameter, thus radius of the groove should not be too small. Process of a part is related to the workpiece contour height, size of the radius of the arc transfer and so on.
3) When milling the bottom of part to plane, the bottom radius r should not be too large.
4) should adopt a unified reference location. NC machining, if there is no uniform reference location, due to re-install the workpiece,it will lead two face contour position and size disharmony after processing.Therefore, to avoid these problems, ensure that the accuracy of relative positions of two clamping after machining, we should adopt a unified reference location.
a suitable hole as a positioning reference hole is the best, if not, to design a hole as a positioning reference hole (such as increased lugs or holes in the blank margin that will be milled in the subsequent milling step). If it’s not available for a hole,at least use the plane or reference which has been accurate as the reference position,to reduce errors generated two setups.
Furthermore, it should analyze if the required precision and tolerances of parts can be guaranteed, if there is excess size cause conflicts or the closure size that impacts the feasibility of other process.
We have been professional specialize in CNC machining kinds of precision parts for many years,with our extensive experience of making custom machined parts for various industries,we can help you with your CNC machined parts need with high quality and good price.Please free to visit our web http://www.wharboprecision.com and give us a RFQ.
Wharbo Precision Manufacturing Co.,Ltd
Address:Building 2#,Xicheng industrial zone,Heng Li town,Dong Guan City,China
Tel: 86-769-33861866
Email:sales@wharboprecision.com
Website:http://www.wharboprecision.com
Dimensioning methods should be adapted to the characteristics of the CNC machining on the darwings of CNC machining parts,reference citations should be the same size or given coordinate dimensions directly. This dimensioning method is convenient for both programming and the coordination between the size, bring great convenience to maintain consistency in the design basis, the benchmark technology, detection reference datum setting and programming. Since the parts designers generally considered more dimension in assembly and other aspects of the use of properties,they have to use a partial dispersion Tagging.This will bring a lot of inconvenience to the work arrangements and CNC machining. Since the NC machining accuracy and repeatability of positioning accuracy is very high, will not produce large accumulated error undermine the use of features, so it can change partial dispersion method to the datum mark baed method or given coordinate dimension directly.
2 geometry elements constitute the contour part should be completed
When manual programming to calculate point or node coordinates. When auto programming, all geometric elements are defined contour parts. Therefore, when analyzing the parts diagram, to analyze geometric elements of a given condition is sufficient. Such as arc and a straight line, arc and arc tangent on drawings, but according to the size of the figure given in the calculation of tangency conditions, into or away from the intersection of state. Since the elements constituting the part geometry conditions is not sufficient, so unable to start programming. When this happens, the designer should be resolved through consultation with the part.
3. part constructions and process should be suitable with the characteristics of CNC machining
1) the cavity and the shape of a part best uniform geometry types and sizes. This can reduce tool size and number of tool changes, easy to make programming,so production efficiency is improved.
2) the size of the groove fillet determines the size of the tool diameter, thus radius of the groove should not be too small. Process of a part is related to the workpiece contour height, size of the radius of the arc transfer and so on.
3) When milling the bottom of part to plane, the bottom radius r should not be too large.
4) should adopt a unified reference location. NC machining, if there is no uniform reference location, due to re-install the workpiece,it will lead two face contour position and size disharmony after processing.Therefore, to avoid these problems, ensure that the accuracy of relative positions of two clamping after machining, we should adopt a unified reference location.
a suitable hole as a positioning reference hole is the best, if not, to design a hole as a positioning reference hole (such as increased lugs or holes in the blank margin that will be milled in the subsequent milling step). If it’s not available for a hole,at least use the plane or reference which has been accurate as the reference position,to reduce errors generated two setups.
Furthermore, it should analyze if the required precision and tolerances of parts can be guaranteed, if there is excess size cause conflicts or the closure size that impacts the feasibility of other process.
We have been professional specialize in CNC machining kinds of precision parts for many years,with our extensive experience of making custom machined parts for various industries,we can help you with your CNC machined parts need with high quality and good price.Please free to visit our web http://www.wharboprecision.com and give us a RFQ.
Wharbo Precision Manufacturing Co.,Ltd
Address:Building 2#,Xicheng industrial zone,Heng Li town,Dong Guan City,China
Tel: 86-769-33861866
Email:sales@wharboprecision.com
Website:http://www.wharboprecision.com
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