7
List 3. Gear Pairs Showed In Fig.1, Worm Gear Pairs And Lead
Screw Pairs
№
. In
Fig.1
Description
Module
Quantity of
Teeth
Pressure
Angle
Spiral Angle
Number
of Starts
Rotation
Direction
Thread
Pitch
5
Gear
1.5
20
20
°
6
Gear
1.5
26
20
°
7
Gear
1.5
39
20
°
9
Gear
1.5
48
20
°
12
Gear shaft
2
12
20
°
14
Elevator lead
screw pair
T20*
Right
4
15
Taper gear
1.5
46
20
°
0
°
17
Taper gear shaft
1.5
30
20
°
0
°
19
Worm gear
2
21
20
°
7
°
7
′
30
″
Right
22
Gear shaft
2
18
20
°
23
Worm
2
20
°
7
°
7
′
30
″
Right
26
Tool post lead
screw pair
M10*
1
Left
1.5
29
Tail stock lead
screw pair
M12*
1
Left
2
31
Gear
1.5
70
20
°
32
Duplicate Z1
gear Z2
1.5
52
20
°
1.5
39
20
°
33
Gear
1.5
60
20
°
34
Gear shaft
2
14
20
°
35
Gear shaft
1.5
20
20
°
37
Large gear
1.6
60
20
°
39
Cross lead screw
pair
T16*
1
Right
2
40
Longitudinal lead
screw pair
T24*
1
Left
3
2
4
30
Change gears
20, 20, 22, 24, 25, 26, 27, 27, 28, 30, 34, 35, 35, 38, 40, 50
Note
: In above list 3, items marked with "*" are specifications of lead
screws.
