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News

25.09.2014 | We invite you to visit our stand at the exhibition "Mashex-2014"!

Get an e-ticket to the exhibition "Mashex-2014"Dear Partners and Clients!

We invite you to visit our stand №C261, hall №3 at the 17th international exhibition of equipment and technologies of metalworking and working of composite materials "Mashex-2014", which will be organized from 28 to 31 October in the exhibition center "Crocus Expo", pavilion №1, Moscow, Russia.

24.09.2014 | We invite you to visit our stand at the exhibition "Stankostroenie-2014"!

Get an e-ticket to the exhibition "Stankostroenie-2014"Dear Partners and Clients!

We invite you to visit our stand №В222 , pavilion №1, hall №2 at the international specialized exhibition "Stankostroenie-2014", which will be organized from 14 to 17 October, 2014 in the exhibition center "Crocus Expo" (Moscow, Russia).



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Main characteristics


Hiwin's linear modules KA series

Features:

1. A wide variety of modules and accessories for various applications:

- Drive Type: Ballscrew, gear belt

- Power: 30-750W, servomotor and stepper motor

- Connection Type: Direct, internal, lower, right, left

- Maximum stroke: 100-3000mm.

- Maximum load: 315kg - horizontal, 90kg - vertical.

2. Easy transformation into the multi-axis module.

3. U-shaped aluminum housing has a light weight and high rigidity of the construction.

4. Easy installation and service.

5. Manufacturing by the customer request for a special operating conditions.

Physical and mechanical characteristics

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Moment of the inertia for the aluminum housing of KA series

 

Moment of
Inertia (mm4)

lxx lyy  
KA100 2.17x105 1.81x106
KA136 3.37x105 5.36x106
KA170 8.84x105 1.24x107
KA200 9.52x105 1.90x107

Application

The linear modules of KA series can be used in a various directions. For example, there are an automatic tinning system, soldering systems, cutting systems, presses for laminating and scanning, automatic painting machines, cutting machines, semiconductor equipment, assembly equipment, presses, equipment for spot welding, equipment for automation of the process, labeling equipment, packing equipment, etc.

Speed

Maximum linear speed

The maximum movement speed (V) is determined by RPM (S) (rotations per minute) multiplied by the pitch (L).

V (mm/s) = S (rpm) × 60 × L (mm)

Lead(mm) 5 10 20 25
RPM: S(rpm)

Maximum Linear Velocity V:
(mm/sec)

200 17 33  67  83
400 33 67 133 167
600 50 100 200 250
800 67 133 267 333
1000 83 167 333 417
1200 100 200  400 500
1400 117 233 467 583
1600 133 267 533 667
1800 150 300 600 750
2000 167 333  667 833
2200 183 367 733 917
2400 200 400 800 1000
2600 217 433 867 1083
2800 233 467 933 1167
3000 250 500 1000 1250
3200 267 533 1067 1333

Maximum speed

The maximum permissible speed for the ballscrew is determined by its critical speed. At excess of a latest the vibrations can occur. The critical speed is correlated with the total length of ballscrew. Thus the critical speed determines the effective stroke and the total length of the module. The critical speed of the ballscrew is calculated by the following equation:

Np=0.8×2.71×108 ×Mdr /Lt2   

N- maximum permissible speed (rpm)

M- factor, for different types of KA fixing it's used as a constant Mf = 0,689

dr - internal screw diameter (mm)

Lt - distance between the support bearings (mm)

Maximum speed and critical speed of different models of KA series

KA Model KA 136
KA 100 KA 170 KA 200
Ballscrew D (mm) 16-5 15-10 16-10 15-20 20-20 20-10 25-25 25-10 25-25
Ballscrew dr (mm) 12.899 12.364 12.684 12.399 17.084 15.982 22.094 21.824 22.094
RPM: S(rpm) Maximum Stroke
200 2948 2883 2922 2887 3416 3211 3818 3776 3801
400 2039 1993 2020 1996 2370 2199 2628 2593 2611
600 1636 1598 1621 1601 1906 1751 2101 2069 2084
800 1396 1363 1383 1366 1630 1483 1787 1757 1770
1000 1232 1203 1220 1205 1441 1301 1573 1544 1555
1200 1111 1085 1101 1086 1302 1166 1414 1387 1397
1400 1017 993 1007 994 1194 1062 1291 1264 1274
1600 941 918 932 920 1107 978 1192 1166 1175
1800 879 857 870 858 1035 908 1110 1084 1093
2000 826 805 817 806 974 849 1041 1015 1023
2200 780 760 772 762 921 798 981 956 963
2400 740 721 733 722 875 753 929 904 911
2600 705 687 698 688 835 714 883 858 865
2800 674 656 667 657 799 679 842 818 824
3000 645 629 639 630 766 648 805 781 787
3200 620 604 613 605 737 620 772 748 754

 

Acceleration / Braking

The speed ​​is determined by the speed of the movable module (carriage). The movable module is accelerated to reach a given point and slowed down at the approach to it.

The acceleration / braking is programmed by the operator based on the operating conditions. The acceleration for KA series: 0.15G, that is calculated for pitch = 5; 0.3G, that is calculated for others. The value 1G = 9.8mm/s2, thus 0.15G = 1470mm/s2, 0.3G = 2940mm/s2. The maximum load, that is indicated in the catalog, is based on this acceleration / braking.

Attention! Acceleration / braking create inertia. The exceeding of the specified parameters will lead to the impacts and vibration.

Operating cycle

The operating cycle of KA systems is defined by the operator. The operating cycle is calculated from the diagram shown below. The variables include: acceleration time Ta, time of the constant movement speed Tc, braking time Td, idling time Tf.

Acceleration speed = V / Ta.

Braking speed = V / Td.

Operating cycle (s) = Ta + Tc + Td + Tf.

Working time = operating cycle × repeatability.

Utilization ratio = working time / working time + shutdown time.

The utilization ratio is closely linked to the motor load.

Not recommended the exceeding of utilization ratio that is equals to 0.5 on the duration of constant use.

Dynamic load

The various factors affect the calculation of the load to KA system. The dynamic load is represented in the catalog (Fy, Fz, Mx, My, Mz) and calculated on the basis of 10000km of the passed distance. To get the correct load level and extend the service life of the module of KA series, the loads must be carefully calculated.

The load falls on the carriage center of the module of KA series. In fact, the load is not on the center, that can lead to slight vibrations and slow response.

To avoid such cases, you need to mount the load as close to the center of the carriage (O) in the ranges (H) that are indicated in the table.

  Н(мм)
Off Center Distance x y z
KA100 550 550 550
KA136 550 550 550
KA170 780 780 780
KA200 900 900 900