Lenze DSD User Manual Page 102
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7Applications
7.6 Spindle drive
102
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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Additionally a force F
vs
can act, e. g. a force due to weight during a slope of the linear movement.
•F
vs
is an external counterforce that can act additionally on the slide or the rack and pinion. The
direction of the force is to be observed.
[7-59] Equation 9: Total translatory force
Required torque of the application
The required torque of the application M
App
has to be calculated in three steps. First the force that
is transmitted via the rack and pinion has to be ascertained:
[7-60] Equation 10: Force of the slide on the spindle
The friction force depends on the force F
App
to be transmitted, so that the resulting force that is
transmitted via the spindle is calculated by means of the following equation.
• It is assumed that η is the leadscrew efficiency in motor mode. The deterioration of the efficien-
cy for operation in generator mode (backward efficiency) is taken into consideration during this
calculation.
[7-61] Equation 11: Force transmitted to the slide, taking the spindle friction into consideration
Consideration of axial forces
In the case of rack and pinions with helical teeth, there are axial forces resulting in a stress for the
shaft bearings on the gearbox output end or on the motor.
The DSD does not calculate axial forces. You have to check them separately and take them into con-
sideration during the dimensioning process.
Torque
For calculating the required torque of the application, the additional moments of inertia (e. g. that
of the spindle) are to be taken into consideration.
[7-62] Equation 13: Required torque of the application
Tip!
Further equations to complete the calculations required for an application can be found in
the chapter "Basic calculations
". ( 68)
F
sum
F
vs
m+
sum
g βsin⋅⋅=
F
App
F
sum
F
μ
+()m+
sum
a⋅=
F
App,η
F
App
F
App
v
v
-----
1
η
Spl
----------
1–
⋅⋅+=
M
App
r
Res
F
App,η
⋅ J
add
α⋅+=
- Drive Solution 1
- Designer 1
- Contents 10
- 1 Notes on usage 11
- 2 About this documentation 14
- Pictograph and signal word! 17
- 3User interface 18
- How to sort the results: 35
- How to filter results: 35
- How to open created notes: 38
- How to delete notes: 38
- 4.3.1 Messages 44
- 4.3.2 Software updates 45
- 4.4 Language 46
- 4.5 Settings 46
- 4.5.3 "Help" tab 47
- 4.5.5 "Units" tab 48
- User data 50
- Registration data: 50
- 4.6 User-specific settings 51
- 4.6.1 User-defined defaults 51
- 5Managing projects 52
- 6 Drive dimensioning tools 55
- 7Applications 100
- Mass calculator ( 405) 109
- Danger! 122
- Pole pair 191
- 8 Motion design 224
- symbol in the toolbar 225
- CINH = 1 271
- 9 Mains and environment 277
- ( 283) 282
- ( 285) 282
- ( 286) 282
- 10.1 Mechanical drive axis 283
- 10.1.1 Lenze gearbox 283
- 10.1.3 Feedback 284
- 10.2 Electrical drive axis 285
- 10.3 Drive concept 286
- 10.3.1 Gearbox features 287
- 10.3.1.1 Axial gearbox 287
- 10.3.1.2 Right-angle gearbox 288
- 10.3.2 Motor properties 289
- 10.3.4 Inverter properties 294
- 10.3.4.1 Frequency inverter 294
- 10.3.4.2 Servo inverters 296
- 11 Drive Dimensioning 308
- 12 Components in the DC bus 361
- 13 Details on Lenze products 377
- 14 Energy efficiency 378
- 15.1 Drawing 386
- Editing functions 389
- 15.2 Results 390
- 15.3 Protocols 391
- 15.3.1 Summarised protocol 391
- 15.3.2 Detailed protocol 391
- 15.3.3 Commissioning data 392
- 15.3.5 Output settings 393
- 15.4.1 Application Tuner 394
- 15.4.3 BlueGreen 394
- ( 378) 395
- 15.6.1 Dynamic reserves 396
- 15.6.2 Stationary reserves 396
- 15.6.3 Speed reserves 397
- 15.6.7 Reserves for gearboxes 399
- 16 Auxiliary means 401
- How to call the calculator: 404
- How to call the DSC: 425
- 17.1 Field weakening 426
- 17.5 Feedback systems 427
- Measured values 430
- 17.16 System disturbances 435
- [17-6] Group drives 436
- 17.19 ATEX for gearbox 437
- 17.21 Emergency-off scenarios 438
- 18.1 Applications 441
- 18.2 Drive system 445
- 18.3 Additional drive element 449
- 18.4 Lenze gearbox 450
- 18.5 Lenze motor 455
- 18.5.6 Motor speed too low 456
- > as winding ratio q 460
- 18.6 Brake 461
- 18.6.3 No brake available 461
- 18.7 Feedback 463
- 18.7.2 No feedback selected 463
- 18.8 Inverters 465
- 18.8.16 Activate VVC control 469
- 18.8.19 Mains choke required 470
- 18.10 Supply module 476
- 18.11 Brake chopper 479
- 18.12 Brake resistor 481
- 18.13 User motor 483
- ( 42) 485
- ( 46) 485
- 20 Glossary 486
- )(('%$& 494
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