Výpočet parametrov predpätej skrutky podľa ČSN 014010

{ TABULKY.PAS               Copyright (c) TrSek alias Zdeno Sekerak }
{ Kniznica pre SKRUTKA.PAS a TLAKSPOJ.PAS blizsie informacie        }
{ v tychto suboroch. Data z STK 2 a Strojnickych tabuliek.          }
{                                                                   }
{ Datum:04.08.1992                             http://www.trsek.com }
 
unit tabulky;
 
interface
 function obr90(lk,d,Da,m:integer):real;
 procedure obr107(da,db,dt:real;var c2a,c2b:real);
{              VYMENOVANE TABULKY V UNITE               }
      {Metricke zavity ,Vyber pre skrutky a matice
       STK  str.151  CSN 01 4010 "MetrickeZavity"}
      {Pozadovana bezpecnost
       STK 2  str 90 "tab9"}
      {Predbezna volba priemeru skrutky
       STK 2  str.92  tab.11  "tab11"}
      {Mechanicke vlastnosti ocelovych skrutiek a matic
       STK 2  str.92   tab.10 "tab10"}
      {Smerne hodnoty sucinitela utahovania Ku
       STK 2  str.94  tab.13  "tab13"}
      {Maximalne dovolene sily predpatia a utahovacie momenty pre
       normalizovane skrutky
       STK 2   str. 96   tab.14  "tab14"}
      {Smerne hodnoty unavovej pevnosti skrutkovych spojov
       sigma a MPa
       STK 2  str.97  tab.15  "tab15"}
      {Smerne hodnoty dovoleneho tlaku Pd MPa pri stlaceni
       suciastok z r“zneho materialu
       STK 2  str.98  tab.16  "tab16"}
      {Diagram na urcenie siloveho pomeru @(fi)c
       STK 2  str.93   obr.88  "obr88"}
      {Stupne presnosti ozubenych kolies
       STT  str.334  tab.1  "ktab1"}
      {Prevadzkovy sucinitel Ki
       STT  str.335  tab.2  "ktab2"}
      {Sucinitele vnutornych dynamickych sil Kv
       STT  str.335  tab.3  "ktab3"}
      {Casova pevnost materialov v ohybe ëfc a v dotyku ëhc
       STT  str.336-337  tab.4  "ktab4"}
      {Pruzna poddajnost spojovanych casti c2
       STK 2   str.95  obr.90  "function obr90"}
      {Hodnoty konstant pruznosti  C2a,C2b
       STK 2  str.112   obr.107}
      {Tolerancie ulozeni s presahom
       STT str. 122-128  "ulozenia"}
      {Tolerancie ulozeni s presahom u ulozeni H
       STT str. 128  "ulozeniah"}
 
const
 
      {Metricke zavity ,Vyber pre skrutky a matice
       STK  str.151  CSN 01 4010 "MetrickeZavity"}
      MetrickeZavity:array[1..11,1..4] of real=
                    ((4,3.545,3.141,7),(5,4.48,4.019,8),
                     (6,5.35,4.773,10),(8,7.188,6.466,14),
                     (10,9.026,8.16,17),(12,10.863,9.853,19),
                     (14,12.701,11.546,22),(16,14.701,11.546,24),
                     (20,18.376,16.933,30),(24,22.051,20.319,36),
                     (30,27.727,25.706,46));
 
      {Pozadovana bezpecnost
      STK 2  str 90 "tab9"}
      tab9:array[1..2,1..9] of real=
           ((4,5,6,8,10,12,16,30,30),(2.2,1.9,1.7,1.5,1.4,1.3,1.2,1.2,1.2));
 
 
      {Predbezna volba priemeru skrutky
      STK 2  str.92  tab.11  "tab11"}
      tab11:array[1..12,1..10] of real=
          ((1.6,1,0.32,2.5,6,5,4,4,4,4),
           (2.5,1.6,0.5,4,8,6,5,5,4,4),
           (4,2.5,0.8,6.3,10,8,6,6,5,5),
           (6.3,4,1.25,10,12,10,8,8,6,5),
           (10,6.3,2,16,16,12,10,8,8,8),
           (16,10,3.15,25,20,16,12,10,10,8),
           (25,16,5,40,24,20,14,14,12,10),
           (40,25,8,63,27,24,18,16,14,12),
           (63,40,12.5,100,33,30,22,20,16,16),
           (100,63,20,160,30,30,27,24,20,20),
           (160,100,31.5,250,30,30,30,30,27,24),
           (250,160,50,400,30,30,30,30,30,30));
 
      {Mechanicke vlastnosti ocelovych skrutiek a matic
      STK 2  str.92   tab.10 "tab10"}
      tab10:array[1..3,1..10] of real=
           ((0,1,2,3,4,5,6,7,8,9),
            (350,500,500,600,800,800,1000,1000,1000,1200),
            (210,300,400,480,650,640,800,900,900,1080));
 
      {Smerne hodnoty sucinitela utahovania Ku
      STK 2  str.94  tab.13  "tab13"}
      tab13:array[1..3] of real=(3,1.4,2);
 
      {Maximalne dovolene sily predpatia a utahovacie momenty pre
      normalizovane skrutky
      STK 2   str. 96   tab.14  "tab14"}
      Tab14:array[1..14,1..13] of real=
            ((4,1.3,1.8,2.4,3.9,5.45,6.55,1,1.35,1.8,2.9,4.1,4.9),
             (5,2.1,3,3.95,6.35,8.95,10.7,2,2.8,3.8,6,8.5,10),
             (6,3,4.2,5.6,9,12.6,15.1,3.3,4.7,6.3,10,14,17),
             (8,5.4,7.7,10.3,16.5,23.2,27.9,8.2,12,16,25,35,41),
             (10,8.6,12.3,16.4,26.2,36.9,44.3,16,23,31,42,69,83),
             (12,12.6,18,23.9,38.3,54,64.5,28,40,54,86,120,145),
             (14,17.2,24.6,32.8,52.5,74,88.5,44,63,84,135,190,230),
             (16,24,34.2,45.6,73,102,123,69,98,131,210,295,355),
             (18,29,41,55,88,124,148,95,136,181,290,405,485),
             (20,37,53,71,114,160,192,134,192,256,410,580,690),
             (22,46,66,88,141,199,239,180,258,345,550,780,930),
             (24,54,77,102,164,230,276,233,335,445,710,1000,1200),
             (27,71,101,134,215,302,363,345,490,655,1050,1500,1800),
             (30,85,123,164,262,368,442,475,680,905,1450,2000,2400));
 
         {Smerne hodnoty unavovej pevnosti skrutkovych spojov
          sigma a MPa
          STK 2  str.97  tab.15  "tab15"}
          TAB15:array[1..6,1..5] of real=
                ((4,4,40,34,27),(5,4,45,38,30),(6,5,55,45,35),
                 (8,6,60,50,40),(10,8,70,60,50),(12,8,70,60,50));
 
         {pomocne, doplnil trsek}
          pomoc:array[0..9] of integer=
             (1,2,3,3,4,4,5,5,6,6);
 
         {Smerne hodnoty dovoleneho tlaku Pd MPa pri stlaceni
          suciastok z r“zneho materialu
          STK 2  str.98  tab.16  "tab16"}
          tab16:array[1..4,1..2] of real=
               ((180,120),(750,500),(500,330),(900,600));
 
         {Diagram na urcenie siloveho pomeru @(fi)c
          STK 2  str.93   obr.88  "obr88"}
          obr88:array[1..3,1..11,1..6] of real=
               (((0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.75,0.63,0.50,0.37,0.51,0.64)),
                 ((0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.69,0.57,0.42,0.27,0.42,0.55),
                 (0.62,0.50,0.37,0.24,0.38,0.49),
                 (0.59,0.45,0.30,0.21,0.32,0.45),
                 (0.54,0.395,0.275,0.17,0.27,0.4),
                 (0.5,0.37,0.25,0.15,0.25,0.35),
                 (0.45,0.32,0.22,0.13,0.22,0.31),
                 (0.42,0.29,0.195,0.118,0.19,0.28),
                 (0.38,0.26,0.175,0.105,0.175,0.26),
                 (0.36,0.24,0.158,0.09,0.155,0.24),
                 (0.33,0.22,0.145,0.085,0.14,0.22)),
                 ((0.75,0.63,0.50,0.37,0.51,0.64),
                 (0.62,0.49,0.35,0.23,0.35,0.49),
                 (0.53,0.39,0.27,0.17,0.28,0.39),
                 (0.48,0.35,0.24,0.14,0.24,0.35),
                 (0.42,0.29,0.19,0.12,0.19,0.28),
                 (0.37,0.25,0.16,0.1,0.16,0.25),
                 (0.34,0.23,0.14,0.08,0.14,0.23),
                 (0.29,0.19,0.12,0.07,0.12,0.19),
                 (0.26,0.17,0.11,0.06,0.11,0.16),
                 (0.23,0.15,0.09,0.055,0.09,0.14),
                 (0.22,0.14,0.08,0.047,0.08,0.13)));
 
         {Stupne presnosti ozubenych kolies
          STT  str.334  tab.1  "ktab1"}
          ktab1:array[1..3,1..12] of real=
               ((1,2,3,4,5,6,7,8,9,10,11,12),
                (0,0,0,12,12,4,4,0.8,0.8,0,0,0),
                (0,0,0,60,60,12,12,4,4,0.8,0.8,0.8));
 
         {Prevadzkovy sucinitel Ki
          STT  str.335  tab.2  "ktab2"}
          ktab2:array[1..3,1..3] of real=
               ((1,1.25,1.75),(1.25,1.5,2),(1.5,1.75,2.25));
 
         {Sucinitele vnutornych dynamickych sil Kv
          STT  str.335  tab.3  "ktab3"}
          ktab3:array[1..2,1..4,1..2,1..5] of real=
               ((((0,1,1.2,1.3,1.45),(0,1,1.15,1.25,1.35)),
                 ((1,1.15,1.35,1.45,0),(1,1.15,1.25,1.35,0)),
                 ((1,1.25,1.45,0,0),(1,1.2,1.35,0,0)),
                 ((1.1,1.45,0,0,0),(1.1,1.35,0,0,0))),
                (((0,1,1,1.1,1.2),(0,1,1,1,1.1)),
                 ((1,1,1,1.2,1.3),(1,1,1,1.1,1.1)),
                 ((1,1.1,1.3,1.4,0),(1,1.1,1.2,1.3,0)),
                 ((1,1.3,1.4,0,0),(1,1.2,1.3,0,0))));
 
 
 
         {Casova pevnost materialov v ohybe ëfc a v dotyku ëhc
          STT  str.336-337  tab.4  "ktab4"}
          ktab4:array[1..44,1..4] of real=
               ((422420,200,40,370),(422425,250,45,380),
                (422430,300,50,390),(422550,500,120,420),
                (422304,420,135,380),(422306,600,135,470),
                (422307,700,135,500),(422650,520,145,500),
                (422460,600,155,530),(422750,650,165,560),
                (422719,700,170,570),(422719,750,175,590),
                (422750,800,185,620),(11500,500,140,490),
                (11523,520,145,500),(11600,600,155,530),
                (11700,700,170,570),(12050,550,150,510),
                (12050,650,165,560),(12061,670,175,590),
                (12061,750,185,620),(13240,800,185,620),
                (14140,900,200,670),(15241,950,210,690),
                (16440,900,200,670),(422660,600,100,1220),
                (422719,700,110,1240),(11600,600,100,1220),
                (11700,700,110,1240),(12051,650,110,1240),
                (14140,800,125,1260),(15241,1000,140,1300),
                (12010,450,185,1320),(12020,500,195,1340),
                (14220,800,270,1460),(14223,900,295,1500),
                (16220,900,295,1500),(16420,950,305,1520),
                (15230,800,270,1250),(15330,800,270,1250),
                (14140,1600,270,1500),(12020,400,160,600),
                (12060,600,185,750),(14140,800,210,900));
 
         {Vybrane mechanicke vlastnosti materialov
          STK 2  str.114  tab.19}
          tab19:array[1..4,1..8] of real=
                ((205000,95000,125000,80000,110000,70000,40500,90000),
                 (0.3,0.3,0.3,0.3,0.3,0.3,0.3,0.25),
                 (11,10,16,18,16,23,26,10),
                 (-8.5,-8,-14,-16,-14,-18,-21,-8));
 
         {Sucinitel zovretia
          STK 2  str.113  tab.18}
          tab18:array[1..5,1..3] of real=
                ((0.13,0.35,0.09),(0.14,0.35,0.09),(0.08,0.15,0.05),
                 (0.055,0.15,0.05),(0,0,0.055));
 
         {Tolerancie ulozeni s presahom
          STT str. 122-128  "ulozenia"}
          ulozenia:array[1..15,1..26] of real=
          ((40,12,53,17,64,20,93,27,121,55,175,97,256,164,364,256,428,
           302,712,568,871,709,1089,911,1347,1153),
          (34,6,46,10,56,12,72,18,97,31,136,58,196,100,264,156,373,
           247,497,353,606,444,749,571,917,723),
          (32,4,41,5,50,6,60,6,81,15,109,31,148,56,198,90,27,148,356,
           212,431,269,524,336,637,443),
          (28,4,35,5,43,6,51,6,62,36,95,31,132,56,179,90,250,147,330,
           212,402,269,492,346,603,443),
          (24,0,31,1,38,1,46,1,56,2,68,4,83,7,106,17,132,37,168,58,
           210,77,247,101,295,135),
          (0,0,0,0,0,0,66,21,88,34,120,56,166,90,226,137,315,212,
           624,294,506,373,619,473,757,597),
          (0,0,0,0,0,0,0,0,108,43,153,89,220,144,308,219,443,340,492,
           474,731,702,909,763,1097,937),
          (24,0,33,3,41,4,50,5,61,7,73,9,89,13,108,19,131,28,156,38,
           179,46,203,57,229,69),
          (28,8,35,11,43,13,51,15,62,27,85,35,117,57,159,89,210,150,
           282,218,367,263,447,333,553,427),
          (0,0,0,0,0,0,0,0,54,20,70,29,94,45,126,69,171,106,225,150,
           272,188,330,237,400,297),
          (24,4,31,7,38,8,46,10,56,14,58,18,83,23,106,36,132,60,
           168,212,210,263,247,333,295,428),
          (24,4,31,7,38,8,46,10,56,14,68,18,83,23,106,36,132,60,168,
           212,210,263,247,333,295,427),
          (16,0,23,3,28,4,34,5,41,7,50,9,60,11,73,16,88,25,106,34,
           126,42,144,51,166,63),
          (20,12,27,11,32,14,39,17,48,22,59,27,78,40,101,57,133,83,
           169,111,202,138,244,172,292,212),
          (16,6,23,10,28,13,34,15,41,19,42,10,62,30,76,39,93,50,113,
           64,130,75,150,89,172,105));
 
         {Tolerancie ulozeni s presahom u ulozeni H
          STT str. 128  "hulozenia"}
          ulozeniah:array[1..5,1..13] of real=
          ((4,5,6,8,9,11,13,15,18,20,23,25,27),
           (6,8,9,11,13,16,19,22,25,29,32,36,40),
           (10,12,15,18,21,25,30,35,40,46,52,57,63),
           (14,18,22,27,33,39,46,54,63,72,81,89,97),
           (25,30,36,43,52,62,74,87,100,115,130,140,155));
 
   rozmery:array[1..13] of integer =
          (3,6,10,18,30,50,80,120,180,250,315,400,500);
 
   naz_ulozenia:array[1..14] of string =
          ('H8/z8','H8/x8','H8/u8','H8/u7','H8/s7','H8/v7','H8/y7',
           'H8/r7','H7/u7','H7/t6','H7/s7','H7/r6','H6/s6','H6/r5');
 
 
implementation
 
   {Pruzna poddajnost spojovanych casti c2
    STK 2   str.95  obr.90  "function obr90"}
   function obr90(lk,d,Da,m:integer):real;
    const
      pz:array[1..2,1..12] of real=
        ((0,1.25,1.75,2.25,2.75,3.25,3.75,4.25,4.75,5.25,5.75,100),
        (50,39,30,24,19,15,11,8,5,3,0,0));
 
      vz:array[1..4,1..24] of real=
        ((0,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,105,110,115),
        (100,85,70,59,49,41,35,29,24,20,17,14,12,9.5,8,6.8,5.5,4.7,3.9,3.2,2.8,2.2,1.9,1.7),
        (175,150,125,100,85,72,60,50,41,35,29,25,20,17,14,13,10,8.1,6.9,5.8,4.8,4,3.2,2.8),
        (300,250,210,175,150,125,100,85,70,60,50,41,34,29,25,20,17,14,12,9.7,8.1,6.9,5.5,4.7));
 
      var x,y,c:real;
          a,p:integer;
 
      begin
        if m=4 then m:=3;
        if m=3 then m:=1
               else if m=1 then m:=3;
        if lk/d>10 then y:=pz[2,11];
        if lk/d<0 then y:=pz[2,1];
        for a:=1 to 11 do
          if (lk/d>=pz[1,a]) and (lk/d<pz[1,a+1]) then y:=pz[2,a];
          if Da/d<=1.5 then p:=1;
          if (Da/d>1.5) and (Da/d<=3) then p:=2;
          if Da/d>3 then p:=3;
        case p of
          1:x:=1.04*y;
          2:x:=(34*y+1000)/50;
          3:x:=(25*y+1650)/50;
               end;
        case d of
          4:c:=0;
          5:c:=60*6;
          6:c:=60*11;
          8:c:=60*14;
         10:c:=60*26;
         12:c:=60*30;
         14:c:=60*34;
         16:c:=60*38;
         18:c:=60*41;
         20:c:=60*45;
         22:c:=60*47;
         24:c:=60*49;
         27:c:=60*52;
         30:c:=60*55;
               end;
       y:=(59*x+c)/60;
       for a:=1 to 23 do
         if (y>=vz[1,a]) and (y<vz[1,a+1]) then obr90:=vz[m+1,a];
     end;
 
      {Hodnoty konstant pruznosti  C2a,C2b
       STK 2  str.112   obr.107}
      procedure obr107(da,db,dt:real;var c2a,c2b:real);
        const vyb:array[1..3,1..12] of real=
             ((0,1.15,1.3,1.5,1.8,2.25,2.75,3.5,4.5,6.5,9,11),
              (0.1,0.17,0.27,0.35,0.43,0.48,0.52,0.545,0.565,0.57,0.573,-1),
              (0.1,0.16,0.24,0.3,0.375,0.43,0.45,0.47,0.48,0.49,0.5,-1));
        var a,b:real;
            i:integer;
        begin
          if (dt<0) or (da<0) then begin
                                     c2a:=0;c2b:=0;exit;
                                   end;
          if db>0 then b:=dt/db;
          a:=da/dt;
          if a>10 then a:=10;
          for i:=1 to 11 do
            begin
              if (vyb[1,i]<a) and (vyb[1,i+1]>=a) then c2a:=vyb[2,i];
              if db>0 then
               if (vyb[1,i]<b) and (vyb[1,i+1]>=b) then c2b:=vyb[3,i];
            end;
          if db<=0 then c2b:=1;
      end;
 
 
 
 
      function kobr1(d,m,it,p,ze,ea:real;var kfa,kha:real):boolean;
 
       begin
         kobr1:=false;
         if (m<0) or (m>20) then exit;
         if (d<12) or (d>1600) then exit;
         if (it<3) or (it>12) then exit;
 
      end;
 
end.