Table 2 Definition, symbol, and upper and lower bounds of parameters

From: Design of a large-range rotary microgripper with freeform geometries using a genetic algorithm

Parameter

CB7-D1

CB7-D2

SB7

Gripper arm length

1520 μm

1534 μm

1545 μm

Gripper arm width

78 μm

88 μm

88 μm

Arm tip length

180 μm

210 μm

190 μm

Arm tip width

79 μm

85 μm

90 μm

Arm tip angle

35°

35°

35°

Finger angle

24°

24°

24°

Finger angle offset

Finger length

44 μm

44 μm

44 μm

Finger width

5 μm

5 μm

5 μm

Finger gap

3 μm

3 μm

3 μm

Rotary actuator length

940 μm

949 μm

960 μm

Rotary actuator width

20 μm

18 μm

21 μm

Connecting beam length

230 μm

221 μm

200 μm

Connecting beam width

7 μm

7 μm

7 μm

Connecting beam top length

210

198

238

Connecting beam top width ratio

0.5

0.5

0.5

Connecting beam top ShiftX

5 μm

4 μm

0 μm

Connecting beam middle length ratio

0.6

0.7

0.5

Connecting beam middle width ratio

0.5

0.5

0.5

Connecting beam middle ShiftX

25 μm

30 μm

0 μm

Connecting beam bottom width ratio

0.5

0.5

0.5

Connecting beam bottom ShiftX

130 μm

112 μm

0 μm