Page 37 - MiSUMi FA Mechanical Components Economy Series

1
Economy Series
Lead precision Ball Screws

2Ball Screw Lead Precision Lead Screws / Actuators Ball Screws /
Allowable value of representative movement error (±ep) and
variation (Vu)
Screw Effective Length (lu) Unit: ȝm
Cumulative Actual Nominal Travel Distance (lo) Line
+ Lead (la) Line Effective Screw Accuracy grade
Cumulative Representative Accumulative Representative Ball Screws
Lead (lm) Line Lead (ls) Line Length (mm) C3 C5 (Economy series)
0’ More than or Less Actual Mean Variation Actual Mean Variation P.31
Travel Lead
Travel Lead
0
Travel Distance Error - v 300 t 315 315 12 10 23 18 Ball Screws Precision
Error
Error
8
20
25
400
13
15
400
500
20
10
27
v2ʌ ep 500 630 16 12 30 23
35
630
25
18
13
800
ʌ vu P.49
300mm 800 1000 21 15 40 27
1000 1250 24 16 46 30
1250 1600 29 18 54 35 for Ball Screw
Term Symbol Meaning Standard value of variation (V300) relative to displacement Support Units
Actual Mean Difference between Actual Mean Travel and Specified 300mm and pitch periodic error (V2ʌ)
Travel Error Travel. Unit: ȝm P.61
Maximum difference of the actual travel contained Accuracy C5 C7
between two lines drawn parallel to the actual mean grade C3 (Economy series) (Economy series)
Vu travel. Defined by the following three parameters:
Variation V300 V : Maximum value for the effective thread length. Item V300 V2ʌ V300 V2ʌ V300 V300 Brackets Motor
V300: Variation for a 300 mm span arbitrarily taken Standard value 8 6 18 8 52 210
V2ʌ
from the effective thread length.
V2ʌ 9DULDWLRQ IRU DQ DUELWUDU\ UHYROXWLRQ ʌUDG &C7 (Economy series) representative movement error (ep) can be
While the Nominal Travel indicates the nominal travel calculated based on ep=2·lu/300·V300. P.69
Specified distance, this is the amount of axial travel distance
Travel ls after compensating possible axis expansion and
contraction caused by thermal rise and loads Lead Screws
Difference between Specified Travel and Nominal
Travel over the effective thread length.
Specified This value is predetermined by compensating for
Travel Target t possible expansion and contraction caused by thermal P.71
Value conditions and external loads. This is determined by
experimental data or experiences.
Actual Travel la Actual measured travel distance.
Straight line representing the trend of actual travel. Nuts Lead Screw
Actual Mean Straight line obtained by least squares method or other
Travel lm simplified and optimal approximation method from the
curve that indicates the actual travel distance. P.83
Allowable Axial Load Line Diagram Allowable Rotational Speed Line Diagram
1.5 10 4 Screw shaft O.D. (mm) Support Units Lead Screw
1.5
6 6 3 3 1.5 3 2 8 П 10
3 3 5 5 1.5 10 4 6
4 4 2 2 10 10 5 5 2 8 5 П 15
2 2 8 8 П3232 1.5 10 4 4 П 20 P.86
П
П
1.5
1.5 3 3 1.5 8 6 5 3 П 25
1.5
6 6 П2525 10 3 6 4 П 32
П
2 2 10 10 5 5 5 5 8 5
10 10 4 8 8 3 2
1.5
8 8 1.5 4 4 П2020 6 4 1.5 Stop Plates Lead Screw
6 6 5 5 4 4 3 3 2 2 П1515 П П 5 4 3 3 2 1.5 2 10 8 3
5 5
6 6
Allowable Axial Load (N) Allowable Axial Load (N) 4 4 3 3 2 2 6 6 5 5 4 4 3 3 1.5 3 3 2 2 10 10 1.5 4 4 8 8 П1010 Allowable Rotational Speed (min -1 ) 1.5 2 2 1.5 8 6 3 10 8 6 5 4 3 6 5 4 4 3 P.90
10 10
5 5
8 8
П П
1.5
10
П
10
1.5
1.5
10000N
10 10 1.5 3 3 2 2 10 10 8 8 4 4 10000N 6 6 4 4 8 6 5 5 4 3 3 2 1.5 2 Actuators
1.5
8 8 1.5 6 6 3 3 4 1.5 10 2
6 6 10 10 4 4 5 5 3 2 8 P.99
5 5 8 8 4 4 2 2 2 1.5 10 2 6
4 4 6 6 3 3 1.5 1.5 10 2 8 5 4
1.5
3 3 5 5 8 6 5 3
4 4 2 2 10 10 3 3 10 6 4
1.5
10 10 2 2 1.5 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 3 3 1.5 1.5 2 2 3 3 4 4 5 5 6 6 7 7 8 5 3 2 2 3
Fixed- Fixed-
Supported-
Fixed- Fixed- Fixed- Supported- 10 1.5 2 3 4 5 6 7 8 910 1.5 2 3 4 5 6 7
Fixed-
Load action point pitch (mm)
Free Fixed
Supported Supported
Free Fixed Supported Supported Load action point pitch (mm) Fixed- Fixed- Fixed- Supported- Support pitch (mm)
Fixed Supported Supported
Free
Support methodpport method
Su Support method
34