| ReturnTo Theme-Group-Choice | Onelevelup |
| 4E048 | Punching or piercing | |
| B21D28/00 -28/36@Z | ||
| B21D28/00@A | AA | AA00 TRIMMING |
AA01 | AA02 | AA03 | |||||||
| . Removal of burrs and chamfering | . Cushioned pads | . Others | ||||||||||
| B21D28/00@B | AB | AB00 PUNCHING FOR SPECIFIC PRODUCT MANUFACTURING |
AB01 | AB02 | AB03 | |||||||
| . Electronic parts | . Gears | . Others | ||||||||||
| B21D28/00@D | AC | AC00 EJECTION |
AC01 | AC02 | AC03 | AC04 | ||||||
| . Ejectors | . Knock-out devices | . Strippers | . Others | |||||||||
| B21D28/00@Z | AD | AD00 DETECTION AND CONTROL |
AD01 | AD02 | AD03 | AD04 | ||||||
| . Detection | . Protection and control | . Break-through prevention | . Others | |||||||||
| B21D28/02@Z | BA | BA00 PUNCHING METHODS |
BA01 | BA02 | BA03 | BA04 | BA05 | BA06 | ||||
| . Materials | . . Laminated plates | . Use of ultrasonic waves | . Multi-step processing | . Prevention of bending or deflection | . Others | |||||||
| B21D28/04@A;28/04@Z;28/36@A | CA | CA00 MOVEMENT AND POSITIONING |
CA01 | CA02 | CA03 | CA04 | CA05 | CA06 | CA07 | CA08 | CA09 | CA10 |
| . Dies | . Materials | . Movement | . . Linear movement | . . Movement along an XY axis | . . Rotation | . Positioning | . . Stoppers | . . Pilots | . Clamps | |||
| CA11 | CA12 | |||||||||||
| . Control | . Others | |||||||||||
| B21D28/06;28/08 | DA | DA00 SCRAPLESS PROCESSING |
DA01 | DA02 | DA03 | |||||||
| . Methods | . Devices | . Others | ||||||||||
| B21D28/10@Z | EA | EA00 INCOMPLETE PUNCHING |
EA01 | EA02 | EA03 | EA04 | ||||||
| . Elastic dies | . Burring | . Cut bending | . Others | |||||||||
| B21D28/14@A;28/14@B;28/14@Z | FA | FA00 PUNCHING DIES |
FA01 | FA02 | FA03 | FA04 | FA05 | FA06 | FA07 | FA08 | FA09 | |
| . Punches | . . Punches with built-in pins | . . Multiple processes | . Dies | . . Means of discharging blanks | . Full-punching dies | . Combination dies | . Materials | . Others | ||||
| B21D28/16 | GA | GA00 PRECISION PUNCHING |
GA01 | GA02 | GA03 | GA04 | GA05 | GA06 | ||||
| . Use of ultrasonic waves | . Shaving processes | . Opposing dies that face each other | . Reverse plate-punching | . Gear punching | . Others | |||||||
| B21D28/20 | HA | HA00 DRIVE MECHANISMS |
HA01 | HA02 | HA03 | HA04 | ||||||
| . Screw mechanisms | . Link mechanisms | . Air-pressure mechanisms | . Others | |||||||||
| B21D28/24@D | JA | JA00 SELECTIVE PUNCH MOVEMENTS |
JA01 | JA02 | JA03 | JA04 | ||||||
| . Movement of the dies | . Movement of the rams | . Sliding of the plates | . Others | |||||||||
| B21D28/28 | KA | KA00 PIERCING OF PIPES OR HOLLOW ARTICLES |
KA01 | KA02 | KA03 | KA04 | KA05 | KA06 | KA07 | KA08 | KA09 | |
| . Piercing from inside the pipe | . Piercing from outside the pipe | . Materials | . . Round pipes | . . Angular pipes | . . Positioning | . Locking and unlocking of the dies in the pipe | . Removal of burrs | . Others | ||||
| B21D28/32 | KB | KB00 PIERCING OF SPECIALLY-SHAPED PARTS |
KB01 | KB02 | KB03 | KB04 | KB05 | KB06 | KB07 | |||
| . Dies | . . Multiple dies | . . Movement | . Materials | . . Shaped steel | . . Positioning | . Others | ||||||
| B21D28/34@C;28/34@D;28/34@H;28/34@Z | LA | LA00 PIERCING DIES |
LA01 | LA02 | LA03 | LA04 | LA05 | LA06 | LA07 | LA08 | LA09 | LA10 |
| . Punches | . . Punches other than round punches | . . Multiple processes | . . Multiple punches | . . Punches with built-in pins | . . Positioning | . . Mounting and support | . . . Direct fixing to punch holders | . . . Direct fixing to punch plates | . Dies | |||
| LA11 | LA12 | LA13 | LA14 | LA15 | LA16 | LA17 | ||||||
| . . Removal of burrs | . Full-punching dies | . Combination dies | . Materials | . Lubrication | . Strippers | . Others | ||||||
| B21D28/34@F | LB | LB00 CAMS |
LB01 | LB02 | LB03 | LB04 | LB05 | LB06 | LB07 | LB08 | LB09 | LB10 |
| . Horizontal movement | . Inclined movement | . Vertical movement | . Use of links | . Double cams | . Full-punching dies | . Combination dies | . Positioning | . . Cushion pads | . Others | |||
| B21D28/36@B;28/36@Z | MA | MA00 TURRET PUNCH PRESSES |
MA01 | MA02 | MA03 | MA04 | MA05 | MA06 | MA07 | MA08 | MA09 | MA10 |
| . Turrets | . . Joining or dividing of turrets | . . Vertical rotation | . Dies | . . Rotary movement of dies | . . Exchanging of dies | . Safety devices and protection devices | . Detection | . Control | . Lubrication | |||
| MA11 | MA12 | |||||||||||
| . Combination with other devices (e.g., lasers) | . Others |