Patents for B21D 28 - Shaping by press-cutting; Perforating (12,707)
12/1987
12/08/1987US4711012 Apparatus and method for installing gutter drops on rain gutters
12/01/1987US4709605 Method of working sheet material workpieces by a sheet material working machine tool
11/1987
11/24/1987US4708042 Punching machine
11/19/1987EP0245371A1 Support system for blanking press.
11/12/1987DE3714898A1 Verfahren und vorrichtung zum herstellen von ausnehmungen auf der begehseite der tragstaebe eines gitterrostes A method and apparatus for producing recesses on the begehseite the tragstaebe a grating
11/10/1987CA1229036A1 Vertical pierce die
11/04/1987EP0243407A1 Improvements to punch presses.
11/03/1987US4704184 Apparatus in the form of a die assembly for building a laminated core
10/1987
10/27/1987CA1228614A1 Apparatus for performing operations on strip material
10/22/1987WO1987006164A1 Numerically controlled punch press
10/20/1987US4700444 Method for making a composite engine cylinder block with preformed liner
10/20/1987US4700441 Tapping machine
10/06/1987US4698480 Computer controlled machine for punching and thermal cutting of workpieces
09/1987
09/29/1987US4696211 Method and apparatus for nibbling cutouts with rectilinear and curvilinear contours by rotation of tooling with cutting surfaces of rectilinear and curvilinear contours and novel tooling therefor
09/29/1987US4696210 Two hole automatic precision punch
09/17/1987DE3604574C1 Pipe notching device
09/16/1987EP0236766A1 Programmable magnetic repulsion punching apparatus
09/03/1987DE3639011A1 Apparatus for making drainage slots or holes in window or door sections
09/02/1987EP0235100A2 Device to periodically actuate one or more punches in a press
09/01/1987US4690021 Automatic load unload turret punch
09/01/1987US4689982 Method for making a cage and the cage produced thereby
08/1987
08/27/1987WO1987004954A1 Punching and bending machine for wires and strips
08/25/1987US4688459 Punch retaining device
08/25/1987US4688456 Apparatus for punching of angular steel profiles
08/25/1987US4688415 Method of manufacturing metal fasteners
08/25/1987CA1225880A1 Press for forming sheet metal elements
08/19/1987EP0232352A1 Punch press
08/13/1987DE3703700A1 Stamping press tool unit
08/11/1987US4685613 Reciprocable tool mounting module
08/11/1987US4685212 Method of manufacturing a jack
07/1987
07/29/1987CN86108533A Method and apparatus for body panel attachment
07/28/1987US4682401 Multiple processing machine
07/21/1987US4681004 Apparatus and method for forming die-cut articles from sheet material
07/21/1987US4681001 Method of making scroll strip blanks
07/14/1987US4679664 Blanking impact absorber
07/14/1987US4679289 Method and apparatus for forming intruded branch attachment structures in tubing
06/1987
06/24/1987EP0226136A2 Apparatus for the non-cutting machining of components
06/15/1987EP0210195A4 Ball-point writing instrument containing an aqueous ink composition.
06/02/1987US4669345 Device for laterally perforating metallic pieces, particularly pressed pieces
06/02/1987US4669290 Louvering apparayus for the perforation of tubine or piping
05/1987
05/21/1987WO1987002916A1 Support system for blanking press
05/20/1987EP0222422A2 Cold-working tool
05/19/1987CA1221904A1 Press and method of making same
05/06/1987EP0220717A1 Welding machine for welding tongues on sheet-metal parts
04/1987
04/23/1987WO1987002309A1 Improvements to punch presses
04/23/1987DE3536987A1 Automatic groove cutting device for cutting in each case two metal sheets from one circular blank
04/21/1987US4658688 Rotary punch and die holders for turret punches
04/15/1987CN85106547A Holes punched on wheel rim at one stroke
04/14/1987US4656902 Metal stamping tool with working parts removable while on the machine
03/1987
03/31/1987US4653365 Method for punching ceramic green sheet
03/25/1987EP0215644A2 Indexable punch and die holder for turret punches
03/25/1987EP0215252A1 Device for triggering control signals for a machining tool
03/25/1987CN86200161U Combined automatic shifting punching dies without lapping edge
03/24/1987US4651601 Device for preventing a collision between a work holder and a tool in numerical control for a turret punch press
03/17/1987US4650114 Punch press with a number of selectable punches
03/03/1987US4646604 Machine tool, especially a punch
03/03/1987US4646600 Cutting press with tool magazine
03/03/1987CA1218628A1 Universal sheet metal holder
02/1987
02/24/1987US4644836 Punch press with vertically reciprocating plunger
02/17/1987US4642887 Method of manufacturing loop-formed metal foil elements
02/12/1987WO1987000777A1 Punch press
02/04/1987EP0210195A1 Ball-point writing instrument containing an aqueous ink composition.
02/04/1987CN86104935A Method puching holes in the ueneer sheet using for electric appliance
02/03/1987US4640169 Cemented carbide cutting tools and processes for making and using
02/03/1987US4640166 Turret punch press
01/1987
01/21/1987EP0209418A1 Method for introducing a capillary tube at any position into a tube having a larger diameter, and device for carrying out this method
01/21/1987EP0208938A2 A method and apparatus for press-cutting various patterns
01/20/1987US4637110 Method for making a composite cylinder block
01/13/1987CA1216543A1 Apparatus for feeding platelike workpieces to a machine tool
01/07/1987EP0207442A1 Method and apparatus for continuous longitudinal scroll slitting and cutting of wide coiled material webs into narrow webs, sheets, strips and blanks
01/06/1987US4633744 Punch press for cutting windows in a ball cage
12/1986
12/30/1986US4632000 Control device for the translation and driving of the movable head of diecutter machines
12/30/1986EP0206187A1 Punch-sensing device in a cross-transfer press
12/23/1986CA1215638A1 Punch press
12/23/1986CA1215532A1 Multitool punching apparatus
12/16/1986US4628578 Method and apparatus for automatic punching
12/09/1986US4627321 Punch press machine including a workpiece positioning means with a quick change die holder, punch and stripper unit
12/04/1986WO1986007000A1 Explosive cutting means
11/1986
11/25/1986US4624165 Power tool, particularly revolving cutting press with tool receiving means suitable for a remotedly controlled exchange
11/25/1986US4624044 Arrangement for storing and exchanging of tools in a power tool particularly a revolving cutting press
11/18/1986US4623089 Punching machine with selectively actuatable punches
11/11/1986US4621556 Relieved serrated dies for rotary punching units
11/11/1986US4621553 Vertical pierce die
11/11/1986US4621512 Mechanism for and method of shifting cam mechanisms in a press for pressing workpieces with depressed portions
11/11/1986US4621511 Method and apparatus for forming loosely connected articles
10/1986
10/28/1986US4619448 Stop mechanism, particularly for stampling machines
10/28/1986US4619031 Linkage tolerance compensating system
10/28/1986US4619028 Apparatus for manufacture of laminated parts
10/22/1986CN85103436A Radiator fin with open and working process and equipment thereof
10/14/1986US4616540 Method and apparatus for making tubes formed with holes in their peripheral wall
10/14/1986CA1212579A1 Punch and ram assembly for punch press
10/07/1986US4615207 Progressive metal mold apparatus for production of laminated iron cores
09/1986
09/23/1986CA1211701A1 Punch press
09/16/1986US4611483 Metal working press
09/16/1986US4611480 Metallic wall having knockouts and method of forming
09/02/1986CA1210649A1 Scored metal sheet and method of forming same
08/1986
08/26/1986US4607709 Motor driven hand-held machine with two part tool assembly
08/26/1986US4607557 Punch
08/13/1986EP0190247A1 Improvements relating to metal pressing and stamping
08/12/1986CA1209460A1 Slug-retaining die