I R 1 2 3 4 5 6 7 8 9 10 11 12 13 T 14 15 A - SDP/SI

More documents

Recommendations

Info

ELEMENTS OF METRIC GEAR TECHNOLOGY Table 1-3C PHONE: 516.328.3300 • FAX: 516.326.8827 • WWW.SDP-SI.COM Size Number, Ratios & Speed Terms Terms Symbols Terms Symbols Number of Teeth Equivalent Spur Gear Number of Teeth Number of Threads in Worm Number of Teeth in Pinion Number of Teeth Ratio Speed Ratio Module Radial Module Normal Module Axial Module z z v z w z l u i m m t m n m x Contact Ratio Radial Contact Ratio Overlap Contact Ratio Total Contact Ratio Specific Slide Angular Speed Linear or Tangential Speed Revolutions per Minute Coefficient of Profile Shift Coefficient of Center Distance Increase e e a e b e g *s w v n x y NOTE: The term "Radial" is used to denote parameters in the plane of rotation perpendicular to the axis. Terms Single Pitch Error Pitch Variation Partial Accumulating Error (Over Integral k teeth) Total Accumulated Pitch Error American Symbol Japanese Symbol Table 1-4 Table 1-3D Symbols f pt *f u or f pu F pk *These terms and symbols are specific to JIS Standards F p Terms Normal Pitch Error Involute Profile Error Runout Error Lead Error Equivalence Of American And Japanese Symbols Nomenclature Accuracy / Error Terms American Symbol Japanese Symbol Symbols f pb f f F r F b Nomenclature I R T 1 2 3 4 5 6 7 B B LA B a C ΔC C o C std D D b D o D R F K L M N N c j j t j na Δa a w d d b d a d f b K L z z c backlash, linear measure along pitch circle backlash, linear measure along line-of-action backlash in arc minutes center distance change in center distance operating center distance standard center distance pitch diameter base circle diameter outside diameter root diameter face width factor, general length, general; also lead of worm measurement over-pins number of teeth, usually gear critical number of teeth for no undercutting N v P d P dn P t R R b R o R T T W b Y Z a b c d d w e h k z v p p n r r b r a s i h a h f c d d p h w virtual number of teeth for helical gear diametral pitch normal diametral pitch horsepower, transmitted pitch radius, gear or general use base circle radius, gear outside radius, gear testing radius tooth thickness, gear beam tooth strength Lewis factor, diametral pitch mesh velocity ratio addendum dedendum clearance pitch diameter, pinion pin diameter, for over-pins measurement eccentricity working depth 8 9 10 11 12 13 14 Continued on the next page 15 T-15 A
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A ELEMENTS OF METRIC GEAR TECHNOLOGY American Symbol h t m p n n w p a p b p c p cn r r b rf r o t 1.3.3 Terminology T-16 Japanese Symbol h e z 1 z w px p b p p n r r b r f r a s Table 1-4 (Cont.) PHONE: 516.328.3300 • FAX: 516.326.8827 • WWW.SDP-SI.COM Equivalence of American and Japanese Symbols Terms used in metric gearing are identical or are parallel to those used for inch gearing. The one major exception is that metric gears are based upon the module, which for reference may be considered as the inversion of a metric unit diametral pitch. Terminology will be appropriately introduced and defined throughout the text. There are some terminology difficulties with a few of the descriptive words used by the Japanese JIS standards when translated into English. One particular example is the Japanese use of the term "radial" to describe measures such as what Americans term circular pitch. This also crops up with contact ratio. What Americans refer to as contact ratio in the plane of rotation, the Japanese equivalent is called "radial contact ratio". This can be both confusing and annoying. Therefore, since this technical section is being used outside Japan, and the American term is more realistically descriptive, in this text we will use the American term "circular" where it is meaningful. However, the applicable Japanese symbol will be used. Other examples of giving preference to the American terminology will be identified where it occurs. 1.3.4 Conversion Nomenclature whole depth contact ratio number of teeth, pinion number of threads in worm axial pitch base pitch circular pitch normal circular pitch pitch radius, pinion base circle radius, pinion fillet radius outside radius, pinion tooth thickness, and for general use, for tolerance For those wishing to ease themselves into working with metric gears by looking at them in terms of familiar inch gearing relationships and mathematics, Table 1-5 is offered as a means to make a quick comparison. Addendum Module * All linear dimensions in millimeters Symbols per Table 1-4 Table 1-5 American Symbol y c g q l µ n f f o Y w inv f Japanese Symbol Spur Gear Design Formulas d g a a w b inv a Nomenclature Lewis factor, circular pitch pitch angle, bevel gear rotation angle, general lead angle, worm gearing mean value gear stage velocity ratio pressure angle operating pressure angle helix angle (b b =base helix angle; b w = operating helix angle) angular velocity involute function To Obtain From Known Use This Formula* Pitch Diameter Module D = mN Circular Pitch Module p D c = mp = –––– p N Module Diametral Pitch 25.4 m = –––– Pd Number of Teeth Module and Pitch Diameter D N = ––– m a = m Continued on the next page
Page 1 and 2: I R T 1 2 3 4 5 6 7 8 ELEMENTS OF M
Page 3 and 4: I ELEMENTS OF METRIC GEAR TECHNOLOG
Page 5 and 6: I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 9 and 10: I R T 1 2 3 4 5 6 7 8 9 10 11 12 EL
Page 13 and 14: I R T 1 2 3 4 5 6 7 8 9 10 11 ELEME
Page 15: I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 19 and 20: I R T 1 ELEMENTS OF METRIC GEAR TEC
Page 21 and 22: I R T 1 2 3 4 5 6 7 8 9 10 ELEMENTS
Page 25 and 26: I R 1 2 3 4 5 6 7 8 9 10 11 12 13 T
Page 29 and 30: I R T 1 2 ELEMENTS OF METRIC GEAR T
Page 31 and 32: I R T 1 2 3 4 5 ELEMENTS OF METRIC
Page 33 and 34: I R T 1 2 3 4 5 6 ELEMENTS OF METRI
Page 39 and 40: I R T 1 2 3 ELEMENTS OF METRIC GEAR
Page 43 and 44: I R T ELEMENTS OF METRIC GEAR TECHN
Page 45 and 46: I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 47 and 48: I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 49 and 50: I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 53 and 54: I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 55 and 56: I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 57 and 58: I R T 1 2 3 4 5 6 7 8 ELEMENTS OF M
Page 59 and 60: I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 61 and 62: I R T 1 2 3 4 5 6 7 ELEMENTS OF MET
Page 63 and 64: I R T ELEMENTS OF METRIC GEAR TECHN
Page 65 and 66: I R T 1 2 3 4 5 6 ELEMENTS OF METRI
Page 67 and 68:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 69 and 70:
I ELEMENTS OF METRIC GEAR TECHNOLOG
Page 71 and 72:
I R T 1 2 3 4 5 6 7 ELEMENTS OF MET
Page 73 and 74:
I R T 1 ELEMENTS OF METRIC GEAR TEC
Page 75 and 76:
I R T 1 2 3 4 ELEMENTS OF METRIC GE
Page 77 and 78:
I R T 1 2 3 4 5 6 7 8 9 10 11 ELEME
Page 79 and 80:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 EL
Page 81 and 82:
Page 83 and 84:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 85 and 86:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 87 and 88:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 89 and 90:
I R T 1 2 3 ELEMENTS OF METRIC GEAR
Page 91 and 92:
I R T 1 2 3 4 5 6 7 8 9 10 ELEMENTS
Page 93 and 94:
Page 95 and 96:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 EL
Page 97 and 98:
I R T 1 2 3 4 5 ELEMENTS OF METRIC
Page 99 and 100:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 EL
Page 101 and 102:
I R 1 2 3 4 5 6 7 8 9 10 11 12 13 T
Page 103 and 104:
I R 1 2 3 4 5 6 7 8 9 10 11 12 13 T
Page 105 and 106:
I R 1 2 3 4 5 6 7 8 9 10 11 12 13 T
Page 107 and 108:
I R 1 2 3 4 5 6 7 8 9 10 11 12 13 T
Page 109 and 110:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 111 and 112:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 121 and 122:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 123 and 124:
I R T 1 2 3 4 5 6 7 8 9 10 11 ELEME
Page 125 and 126:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 127 and 128:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 129 and 130:
Page 131 and 132:
I R T 1 2 3 4 5 6 7 8 ELEMENTS OF M
Page 133 and 134:
I R T 1 2 3 4 5 6 7 8 ELEMENTS OF M
Page 135 and 136:
I R ELEMENTS OF METRIC GEAR TECHNOL
Page 137 and 138:
Page 139 and 140:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 141 and 142:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 153 and 154:
Page 155 and 156:
I R T ELEMENTS OF METRIC GEAR TECHN
Page 157 and 158:
I R 1 2 3 4 5 6 7 8 9 10 11 12 13 T
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
I R T 1 2 ELEMENTS OF METRIC GEAR T
Page 165 and 166:
I R T 1 2 3 4 5 6 7 8 9 10 11 ELEME
Page 167 and 168:
Page 169 and 170:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 EL
Page 171 and 172:
Page 173 and 174:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 175 and 176:
Page 177 and 178:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 179 and 180:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 EL
Page 181 and 182:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 183 and 184:
I R T 1 2 3 4 5 6 7 8 9 10 ELEMENTS
Page 185 and 186:
I R T 1 2 3 4 5 6 7 8 9 10 11 ELEME
Page 187 and 188:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 EL
Page 189 and 190:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 191 and 192:
Page 193 and 194:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 195 and 196:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 197 and 198:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 EL
Page 199 and 200:
I R T 1 2 3 4 5 6 7 8 9 ELEMENTS OF
Page 201 and 202:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 203 and 204:
Page 205 and 206:
I R T 1 2 3 4 5 6 7 8 9 10 ELEMENTS
Page 207 and 208:
Page 209 and 210:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 211 and 212:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 213 and 214:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 215 and 216:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 EL
Page 217 and 218:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 219 and 220:
I R ELEMENTS OF METRIC GEAR TECHNOL
Page 221 and 222:
Page 223 and 224:
I R T 1 2 ELEMENTS OF METRIC GEAR T
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 231 and 232:
I R T 1 2 3 4 5 6 7 8 9 10 11 12 13
Page 233:
I R T 1 2 3 4 5 6 7 8 9 10 11 ELEME
show all

I R 1 2 3 4 5 6 7 8 9 10 11 12 13 T 14 15 A - SDP/SI

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?