The document discusses various techniques for punching and forming sheet metal, including using a gripper line to avoid curling, using a relieved stripper and die to minimize curling, and using a "heel" to prevent side loads in off-center applications. It also describes several techniques that can be done in a single hit, such as piercing and embossing, triple piercing and extruding down, and pre-piercing, extruding, and embossing. Additionally, it mentions progressive punching and forming where each hit finishes a part in two to three progressive hits.

1. PUNCHING & FORMING
COMBINED
FOR YOUR INSPIRATION
1All images copyright Mate Precision Tooling, Inc.

2. Gripper line around emboss
avoids curling of the sheet
2
Heavy sheet curling without gripper line …
AVOIDING SHEET CURLING

3. … with use of
relieved stripper and die
3
Sheet curling can be minimized …
AVOIDING SHEET CURLING

4. Sheet border and near holes
remain unaffected
PowerMax
Die
4
Example of Emboss upper
insert with Gripper Line
GRIPPER LINE SOLUTIONS

5. V-Line emboss (Gripper Line)
in the stripper isolates the
forming area.
Used in combination with
PowerMax Die
5
GRIPPER LINE SOLUTIONS

6. 6
GRIPPER LINE SOLUTIONS

7. ‘Heel’ prevents side load
in off-center applications
7
HEEL TOOL

8. 8
LANCE & FORM

9. 9
HIGH LANCE & FORM

10. 10
Pre-pierce and Emboss
in one single hit
PIERCE & EMBOSS

11. Triple pre-pierce
and extrusion down,
in one single hit
11
TRIPLE PIERCE & EXTRUDE DOWN

12. Pre-pierce, extrusion and
emboss in one single hit
12
PRE-PIERCE EXTRUSION & EMBOSS

13. Two or three progressive
hits required per part, but
every hit finishes a part.
13
Two or three progressive hits required per
part, but every hit finishes a part.
PROGRESSIVE PUNCHING & FORMING

14. 14
Two or three progressive hits required per
part, but every hit finishes a part.
PROGRESSIVE PUNCHING & FORMING

15. 15
PROGRESSIVE PUNCHING & FORMING

16. Special precision tabs per customer design
16
Etch: 09182900
SPECIAL SHEARBUTTON TAB

17. OUR MISSION:
To personally respect, support and inspire sheet metal professionals
around the world with high-quality precision tooling and services.