Rexroth Tightening System 350 System Documentation - Rhino ...

More documents

Recommendations

Info

206/316 Bosch Rexroth AG | Tightening Technology 9 Tightening Processes9.2 Tightening program stepsNoteInformation on determining the correction factors can be found in chapter 10, “Working with the System”on page 245!9.2.1.3 Play at start switchThe field Evaluation from includes the value of the torque threshold for play at the start switch as a percentageof the nominal torque. Evaluations (OK/NOK) and result output for a tightening are carried outfrom this threshold. However, this only occurs if the Additional functionality hand-held nutrunner hasbeen activated in the channel configuration. The evaluation and result output are suppressed if the maximumoccurring torque is below the set threshold.The default value is 5%. Values between 0 and 100% can be set.NoteInformation on the additional functionality hand-held nutrunner can be found in chapter 8, “Basic Commissioning”!9.2.1.4 Gradient parametersGradient parameters are used to parameterize the calculation of the gradient values (especially importantwith tightening processes controlled by the yield point (see page 238)).The gradient is determined directly on the measurement transducer. The Torque filter factor and Chordangle parameters required for this are sent from the tightening controller to the measurement transducerafter the tightening start. Gradient determination is begun with the tightening start or from the set torquethreshold.The gradient is a measurement of the slope in the torque/angle of turn graph. It increases and decreaseswith the course of the torque. The gradient is calculated approx. every 0.25° 1) (increments) according to:ΔT difference of the average torque valueG = ------- = ------------------------------------------------------------------------------------------------------------ΔAchord angle totalThe Torque filter factor and Chord angle gradient parameters to determine the gradient are only to beindicated for:– Tightening programs with the target function Gradient (see page 215)– Tightening programs with the target function Yield point (see page 213)– Tightening programs with the monitoring function Gradient (see page 214)– Tightening programs with the monitoring function Yield point (see page 238)Torque filter factorThis entry stipulates the number of measured values used to form the average torque value (averagerange). Averaging of the torque is implemented as a floating average value (see page 207).A minimum of 4 and maximum of 64 torque values may be used to form the average value. 20 is presetas the standard value.Chord angle This entry determines the increments in [°] for calculating the gradient. The setting range is between 2.00°and 16.00°; 8° is preset as the standard value.A smaller value results in a faster response of the gradient to torque changes; a larger value filters outtorque peaks better, but has a slower response time.Filter intervalThis entry is used to improve suppression of output drive-specific interferences in the gradient signal. Itleads to an extended smoothing of the gradient graph, but also delays gradient evaluation. The settingrange can be selected from between 0.00° and 60.00°. 0° is preset as the standard value, i.e. filtering isswitched off.1) The gradient calculation is executed parallel to the cycle time for the measurement transducer. Atspeeds < 100 min -1 , approx. 0.25° per measurement can be assumed.System 350 | 3 608 878 040/05.2008
9 Tightening Processes Tightening Technology | Bosch Rexroth AG 207/3169.2 Tightening program stepsNoteThe filter depth must be smaller than 512. It is calculated according to the following formula:Filter depth =Filter interval 60------------------------------------------------------------------------------------------------------------------Rotations per minute 360 1,2 10 – 3NoteThe filter interval depends on the mechanical output drive components. The online help files in the BS350contains the filter intervals recommended by Rexroth for various output drives in the section “Recommendedfilter intervals”.The Ergostart and Ergostop functions must be deactivated when using the filter interval (> 0°)!ExampleGradient parameter:Fig. 9–3 shows an example of gradient parameters that can be set in the BS350 and Fig. 9–4 includesthe corresponding determined gradient in the form of a graph.Figure 9–3:Gradient parameters in the BS350T [Nm]T 49 – T 17G 49= --------------------------ΔA1 49T 49 = --- T4∑n = 46 n1 17T 17 = --- T4∑n = 14 nT 49T 44T 45T 46T 47T 48T 49Range of thetorque averagedetermination(torque filterfactor = 4)T 18T 17T 17T 16T 15T 14T 13T 12Chord angle = 8° (Δ A)(equals 32 angle steps)T = torqueA = angleG = gradient0.25°0.25°0.25°. . .A [°]Figure 9–4:Determining the gradientSystem 350 | 3 608 878 040/05.2008
Page 1 and 2:
Rexroth Tightening System 350System
Page 3 and 4:
ContentsSchraubtechnik | Bosch Rexr
Page 5 and 6:
ContentsSchraubtechnik | Bosch Rexr
Page 7:
1 About This DocumentThis chapter c
Page 10 and 11:
10/316 Bosch Rexroth AG | Tightenin
Page 12 and 13:
Page 14 and 15:
Page 16 and 17:
Page 18 and 19:
Page 20 and 21:
Page 22 and 23:
Page 24 and 25:
Page 26 and 27:
Page 28 and 29:
Page 30 and 31:
Page 32 and 33:
Page 34 and 35:
Page 36 and 37:
Page 38 and 39:
F PAF KRF S38/316 Bosch Rexroth AG
Page 40 and 41:
Page 42 and 43:
Page 44 and 45:
Page 46 and 47:
Page 48 and 49:
Page 50 and 51:
Page 52 and 53:
Page 54 and 55:
Page 56 and 57:
Page 58 and 59:
Page 60 and 61:
Page 62 and 63:
Page 64 and 65:
Page 66 and 67:
Page 68 and 69:
Page 70 and 71:
Page 72 and 73:
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
Page 100 and 101:
100/316 Bosch Rexroth AG | Tighteni
Page 102 and 103:
Page 104 and 105:
Page 106 and 107:
Page 108 and 109:
Page 110 and 111:
Page 112 and 113:
Page 114 and 115:
Page 116 and 117:
Page 118 and 119:
Page 120 and 121:
Page 122 and 123:
Page 124 and 125:
Page 126 and 127:
Page 128 and 129:
Page 130 and 131:
Page 132 and 133:
Page 134 and 135:
Page 136 and 137:
Page 138 and 139:
Page 140 and 141:
Page 142 and 143:
Page 144 and 145:
Page 146 and 147:
Page 148 and 149:
Page 150 and 151:
Page 152 and 153:
Page 154 and 155:
Page 156 and 157: 156/316 Bosch Rexroth AG | Tighteni
Page 174 and 175: OKNOK191781624FGC1C3C2CS351174/316
Page 256 and 257:
Page 258 and 259:
Page 260 and 261:
Page 262 and 263:
Page 264 and 265:
Page 266 and 267:
Page 268 and 269:
Page 270 and 271:
.270/316 Bosch Rexroth AG | Tighten
Page 272 and 273:
Page 274 and 275:
Page 276 and 277:
Page 278 and 279:
Page 280 and 281:
Page 282 and 283:
Page 284 and 285:
Page 286 and 287:
Page 288 and 289:
Page 290 and 291:
Page 292 and 293:
Page 294 and 295:
Page 296 and 297:
Page 298 and 299:
Page 300 and 301:
Page 302 and 303:
Page 304 and 305:
Page 306 and 307:
Page 308 and 309:
Page 310 and 311:
Page 312 and 313:
Page 314 and 315:
Page 316:
Bosch Rexroth AGElectric Drives and
show all

Rexroth Tightening System 350 System Documentation - Rhino ...

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

Delete template?

Save as template?