{"id":2046,"date":"2019-09-03T15:19:12","date_gmt":"2019-09-03T07:19:12","guid":{"rendered":"https:\/\/www.marketingthiink.com\/?p=2046"},"modified":"2022-08-03T10:02:27","modified_gmt":"2022-08-03T02:02:27","slug":"cnc-nc-machining-calculating-formula","status":"publish","type":"post","link":"https:\/\/www.marketingthiink.com\/blog\/cnc-nc-machining-calculating-formula.html","title":{"rendered":"NC\/CNC MACHINING calculating FORMULA"},"content":{"rendered":"\n

In NC machining<\/a> or CNC machining<\/a> working, we always met the different drawings which marked with different machining standard. That require worker to calculate dimensions with different calculation formula.<\/p>\n\n\n\n

International Standards<\/h2>\n\n\n\n

MACHINING CALCULATING FORMULA for calculating the bore diameter of the tapping of extrusion wire:<\/h3>\n\n\n\n

Formula: External diameter of teeth – 1\/2 *pitch<\/p>\n\n\n\n

Example 1: Formula: M3 * 0.5 = 3 – (1\/2 * 0.5) = 2.75mm<\/p>\n\n\n\n

M6 x 1.0 = 6 – (1\/2 x 1.0) = 5.5 mm<\/p>\n\n\n\n

Example 2: Formula: M3 * 0.5 = 3 – (0.5\/2) = 2.75 mm<\/p>\n\n\n\n

M6*1.0=6-(1.0\/2)=5.5 mm.<\/p>\n\n\n\n

MACHINING CALCULATING FORMULA for English tapping:<\/h3>\n\n\n\n

1 inch = 25.4mm<\/p>\n\n\n\n

Example 1: (1\/4-30)<\/p>\n\n\n\n

1\/4 x 25.4 = 6.35 (Pitch Diameter )<\/p>\n\n\n\n

25.4\/30 = 0.846 (pitch)<\/p>\n\n\n\n

The conversion from 1\/4-30 to metric screw should be M6.35 * 0.846 <\/p>\n\n\n\n

Example 2: (3\/16-32)<\/p>\n\n\n\n

3\/16*25.4=4.76 <\/em>( Pitch Diameter )<\/p>\n\n\n\n

25.4\/32 = 0.79 (pitch)<\/p>\n\n\n\n

The conversion from 3\/16-32 to metric screw should be M4.76 *0.79<\/p>\n\n\n\n

Formulas for converting British thread into metric thread:<\/h3>\n\n\n\n

Molecular\/Denominator x 25.4 =Pitch diameter<\/p>\n\n\n\n

Example 1: (3\/8-24)<\/p>\n\n\n\n

3\/8 x 25.4 = 9.525 ( Pitch Diameter ) <\/p>\n\n\n\n

25.4 24 = 1.058 ( METRIC THREAD ) <\/p>\n\n\n\n

The conversion from 3\/8-24 to metric thread should be M9.525 * 1.058<\/p>\n\n\n\n

\"CNC
CNC machining part<\/figcaption><\/figure><\/div>\n\n\n\n

MACHINING CALCULATING Formula for converting American-made thread into metric thread:<\/h3>\n\n\n\n

Example: 6-32<\/p>\n\n\n\n

6-32 (0.06+0.013)\/Code *6=0.138<\/p>\n\n\n\n

0.138 * 25.4 = 3.505( Pitch Diameter ) <\/p>\n\n\n\n

25.4\/32 = 0.635 (pitch)<\/p>\n\n\n\n

The conversion of 6-32 to metric thread should be M3.505 * 0.635<\/p>\n\n\n\n

1.Formula for calculating bore diameter:<\/h4>\n\n\n\n

External thread diameter- 1\/2 * pitch should be:<\/p>\n\n\n\n

M3.505-1\/2*0.635=3.19<\/p>\n\n\n\n

So the inner hole dia. of 6-32 should be 3.19<\/p>\n\n\n\n

2.Inner Hole Tapping Algorithms for Extrusion Wire:<\/h4>\n\n\n\n

Calculating Lower hole diameter Formula 1: <\/p>\n\n\n\n

External pitch diameter – (pitch * 0.4250.475) \/ code = lower hole diameter<\/p>\n\n\n\n

Example 1: M6 *1.0<\/p>\n\n\n\n

M6-(1.0 x 0.425) = 5.575 (maximum lower hole diameter)<\/p>\n\n\n\n

M6-(1.0 x 0.475)= 5.525 (minimum lower hole diameter)<\/p>\n\n\n\n

Example 2: Simple formulas for calculating lower hole diameter of tapped holes by cutting wire:<\/p>\n\n\n\n

M6-(1.0 x 0.85) = 5.15 (maximum)<\/p>\n\n\n\n

M6-(1.0 x 0.95)=5.05 (minimum)<\/p>\n\n\n\n

M6-(pitch * 0.860.96)\/Code = Lower hole diameter<\/p>\n\n\n\n

Example 3: M6*1.0=6-1.0=5.0+0.05=5.05<\/p>\n\n\n\n

Machining Calculating Formula for the External Diameter of Pressure Thread:<\/h2>\n\n\n\n

Diameter – 0.01 *0.645 *Pitch Distance<\/p>\n\n\n\n

Example 1: M3 * 0.5 = 3-0.01*0.645 * 0.5 = 2.58 (external diameter)<\/p>\n\n\n\n

Example 2: M6*1.0=6-0.1*0.645*1.0=5.25 (external diameter)<\/p>\n\n\n\n

Formula for calculating roll diameter of metric thread: (full teeth)<\/h2>\n\n\n\n

Example 1: M3 x 0.5 = 3-0.6495 x 0.5 = 2.68 (outside diameter before turning)<\/p>\n\n\n\n

Example 2: M6*1.0=6-0.6495*1.0=5.35 (outside diameter before turning)<\/p>\n\n\n\n

External Diameter Depth (External Diameter) of Embossing<\/h2>\n\n\n\n

Outer diameter\/25.4 * embossing pitch = outer diameter before embossing<\/p>\n\n\n\n

Example: 4.1\/25.4 x 0.8 (embossing pitch spacing) = 0.13 embossing depth should be 0.13.<\/p>\n\n\n\n

Diagonal Conversion Formula for Polygonal Materials:<\/h2>\n\n\n\n

Formula 1: <\/p>\n\n\n\n

Quadrangle: diagonal radius * 1.414 = diagonal radius <\/p>\n\n\n\n

Pentagon: diagonal radius * 1.2361 = diagonal radius<\/p>\n\n\n\n

Hexagonal: diagonal diameter * 1.1547 = diagonal diameter <\/p>\n\n\n\n

Formula 2:<\/p>\n\n\n\n

Four corners: diagonal radius\/0.71 = diagonal radius<\/p>\n\n\n\n

Hexagonal: diagonal radius\/0.866 = diagonal radius<\/p>\n\n\n\n

Tool Thickness (Cutter):<\/h2>\n\n\n\n

material outer diameter\/10+0.7 Reference value <\/p>\n\n\n\n

Formula for calculating taper:<\/h2>\n\n\n\n

Formula 1: (Big Head Diameter-Small Head Diameter)\/( 2 x
Total Length of Taper) = Degrees<\/p>\n\n\n\n

Equal to the value of a triangular function<\/p>\n\n\n\n

Formula 2: <\/p>\n\n\n\n

(Big Head Diameter-Small Head Diameter)\/28.7\/Total Length = Degrees<\/p>\n\n\n\n

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In NC machining or CNC machining working, we always met … \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":[61,59,4,57,62,58,60],"_links":{"self":[{"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/posts\/2046"}],"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=2046"}],"version-history":[{"count":3,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/posts\/2046\/revisions"}],"predecessor-version":[{"id":2051,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/posts\/2046\/revisions\/2051"}],"wp:attachment":[{"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/media?parent=2046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/categories?post=2046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.marketingthiink.com\/wp-json\/wp\/v2\/tags?post=2046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}