(0)B21D:4/6:
IPC6
SECTION B - PERFORMING OPERATIONS; TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS...
B21D
5/7
<<   >>   B21D031/00 - B21D043/28  

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/ 00 Other methods for working sheet metal, metal tubes, metal profiles (deforming one surface of tubes helically by rolling B 21 H 3/00; upsetting B 21 J 5/08; working metal by removing material therefrom B 23; embossing B 44 B)

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/ 02 • Stabbing or piercing, e.g. for making sieves (dimpling B 21 D 22/04; perforating by punching B 21 D 28/24)  

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/ 04 • Expanding other than provided for in groups B 21 D 1/00 to B 21 D 28/00, e.g. for making expanded metal (B 21 D 47/00 takes precedence; enlarging tube ends B 21 D 41/02) [2]  

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/ 06 • Deforming sheet metal, tubes or profiles by sequential impacts, e.g. hammering, beating (forging hammers B 21 J 7/00)  
 

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/ 00 Special measures in connection with working metal foils, e.g. gold foils (cutting or perforating of metal foil analogous to paper B 26)
 

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/ 00 Combined processes according to methods covered by groups B 21 D 1/00 to B 21 D 31/00 (B 21 D 21/00 takes precedence)
 

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/ 00 Tools as parts of machines covered by this subclass (forms or constructions of tools uniquely adapted for particular operations, see in the relevant groups for the operations)

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/ 01 • Selection of materials [2]  

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/ 02 • Die constructions enabling assembly of the die parts in different ways (B 21 D 37/06 takes precedence)  

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/ 04 • Movable or exchangeable mountings for tools  

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/ 06 • • Pivotally-arranged tools, e.g. disengageable (die sets with dies pivoted to one another B 21 D 37/12)  

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/ 08 • Dies with different parts for several steps in a process  

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/ 10 • Die sets; Pillar guides  

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/ 12 • • Particular guiding equipment; Special arrangements for interconnection or cooperation of dies  

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/ 14 • Particular arrangements for handling and holding in place complete dies  

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/ 16 • Heating or cooling  

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/ 18 • Lubricating  

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/ 20 • Making tools by operations not covered a single other subclass  
 

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/ 00 Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating (riveting B 21 J; uniting components by forging or pressing to form integral members B 21 K 25/00; welding B 23 K; press-fitting, force-fitting, or shrinking in general B 23 P 11/00, B 23 P 19/00; by adhesives F 16 B 11/00); Tube expanders

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/ 02 • of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder  

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/ 03 • of sheet metal otherwise than by folding [2]  

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/ 04 • of tubes with tubes; of tubes with rods  

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/ 06 • of tubes in openings, e.g. rolling-in  

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/ 08 • Tube expanders  

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/ 10 • • with rollers for expanding only  

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/ 12 • • with rollers for expanding and flanging  

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/ 14 • • with balls  

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/ 16 • • with torque limiting devices  

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/ 18 • • Rollers of special shape  

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/ 20 • • with mandrels, e.g. expandable [2]  
 

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/ 00 Application of procedures in order to alter the diameter of tube ends (B 21 D 39/00 takes precedence)

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/ 02 • Enlarging  

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/ 04 • Reducing; Closing  
 

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/ 00 Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices (cutting devices associated with the tool, see the relevant group for the tool)

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/ 02 • Advancing work in relation to the stroke of the die or tool  

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/ 04 • • by means in mechanical engagement with the work  

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/ 05 • • • specially adapted for multi-stage presses  

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/ 06 • • • by positive or negative engaging parts co-operating with corresponding parts of the sheet or the like to be processed, e.g. carrier bolts or grooved section in the carriers  

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/ 08 • • • by rollers  

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/ 09 • • • • by one or more pairs of rollers for feeding sheet or strip material [2]  

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/ 10 • • • by grippers  

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/ 11 • • • • for feeding sheet or strip material [2]  

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/ 12 • • • by chains or belts  

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/ 13 • • • by linearly moving tables [2]  

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/ 14 • • • by turning devices, e.g. turn-tables  

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/ 16 • • by gravity, e.g. chutes  

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/ 18 • • by means in pneumatic or magnetic engagement with the work  

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/ 20 • Storage arrangements; Piling or unpiling (in general B 65 G)  

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/ 22 • • Devices for piling sheets  

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/ 24 • • Devices for removing sheets from a stack  

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/ 26 • Stops  

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/ 28 • Associations of cutting devices therewith  
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