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Punch and Die Set Up Tips

punch and dieTool life is all about SET-UP!

  • Is everything tight?
  • Is punch to die alignment good?
  • Is the punch to die clearance correct for material thickness?

Standard die size is punch size plus 1/32 or 1/16.

Reference Chart for Mild Steel
Material Thickness
Total Clearance
1/4 to 1/2
1/32
1/2 to 3/4
1/16
3/4 to 1
3/32
  • Is stripper adjusted correctly?
  • Are all safety guards in place?
  • See “Punch Tips

To Calculate Tonnage
(For material with 65,000 psi tensile)

Round
Hole Size X Material Thickness X 102 = Tonnage
 
Oblong
[ (.63 X Z) + “W”] X Material Thickness X 102 = Tonnage
Square
A X 1.27 X Material Thickness X 102 = Tonnage
Rectangle
(L + W) X .64 X Material Thickness X 102 = Tonnage

FOR HIGHER TENSILE MATERIAL, EXCHANGE 102 WITH:
75,000 psi TENSILE =
118
85,000 psi TENSILE =
134

READ AND UNDERSTAND THIS WARNING. PROTECT YOURSELF AND OTHERS.
Extreme pressures are generated. Use all safety guards. It is the responsibility of the user to operate the machine and tooling in accordance with OSHA Laws and ANSI B11.5 Safety Standards.

TYPICAL DIE CLEARANCES FOR MILD STEEL

PUNCH
SIZE
MATERIAL THICKNESS
1/8
1/4
3/8
1/2
5/8
3/4
7/8
1"
3/16
13/64
1/4
17/64
5/16
21/64
11/32
3/8
25/64
13/32
7/16
29/64
15/32
15/32
1/2
33/64
17/32
17/32
9/16
37/64
19/32
19/32
5/8
5/8
41/64
21/32
21/32
11/16
11/16
45/64
23/32
23/32
3/4
3/4
3/4
49/64
25/32
25/32
13/16
13/16
13/16
53/64
27/32
27/32
7/8
7/8
7/8
7/8
57/64
29/32
29/32
15/16
15/16
15/16
15/16
61/64
31/32
31/32
1"
1"
1"
1-1/32
1"
1-1/64
1-1/32
1-1/32
1-1/16
1-1/16
1-1/16
1-3/32
1-3/32
1-1/16
1-5/64
1-3/32
1-3/32
1-1/8
1-1/8
1-1/8
1-5/32
1-5/32
1-1/8
1-9/64
1-5/32
1-5/32
1-3/16
1-3/16
1-3/16
1-7/32
1-7/32
1-3/16
1-13/64
1-7/32
1-7/32
1-1/4
1-1/4
1-1/4
1-9/32
1-9/32
1-1/4
1-17/64
1-9/32
1-9/32
1-5/16
1-5/16
1-5/16
1-11/32
1-11/32
1-5/16
1-21/64
1-11/32
1-11/32
1-3/8
1-3/8
1-3/8
1-13/32
1-13/32
1-3/8
1-25/64
1-13/32
1-13/2
1-7/16
1-7/16
1-7/16
1-15/32
1-15/32
1-7/16
1-29/64
1-15/32
1-15/32
1-1/2
1-1/2
1-1/2
1-17/32
1-17/32
1-1/2
1-33/64
1-17/32
1-17/32
1-9/16
1-9/16
1-9/16
1-19/32
1-19/32

THIS CHART IS FOR REFERENCE ONLY
Check with machine manufacturer for specific applications.

REFERENCE TONNAGE CHART

MATERIAL
THICKNESS
PUNCH SIZE
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1"
1-1/8
1-1/4
3/16
.187
3
4
5
6
7
8
9
9
10
11
12
13
14
15
17
19
1/4
.250
5
6
8
9
10
11
13
14
15
16
18
19
20
23
25
3/8
.375
11
13
15
17
19
21
23
24
26
28
30
33
38
1/2
.500
20
23
25
28
30
33
35
38
40
45
50
5/8
.625
31
34
38
41
44
47
50
56
63
3/4
.750
45
49
53
56
60
68
75
7/8
.875
61
66
70
78
88
1"
1.000
80
90
100

This chart provides the required tonnage to punch a hole through mild steel with a tensil stregth of 50,000 psi. There are many variables that affect the punching process, including required tonnage. Therefore, this chart is an approximation and is to be used as a guide only.

For specific mahine capacities, please refer to your machine manual.

To place an order or to speak to a knowledgeable salesperson, call today!
 
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