User manual BYSTRONIC HAMMERLE TOOLS BROCHURE

[. . . ] The tools according to this catalogue are valid for all the mentioned methods. Length depends on the accuracy requirements of the parts Matrize / bottom tool Matrizenbolzen / Pin for bottom tool Matrizentiefe / bottom tool depth Matrizenöffnung / die opening hydraulisches Kissen / hydraulic cushion Oberwerkzeug / Top tool For the 3-point bending the bottom tool groove depth (H) is accomplished with an accuracy of 1/1000 mm by means of a precise wedge system. [. . . ] Under load the material is stressed from A to C. After removal of the load the portions AD and EC spring back into their original positions. In the case of air bending without bottoming the vees of the bottom tool and the angle of the top tool must be smaller than 90°. As soon as the portions AD and CE touch the sides of the vee in air bending with bottoming they will spring back into their original position until the points of contact have moved to D and E. A still further penetration of the top tool will result in a disengagement of the points D and E from the walls of the bottom tool as the points of contact start to move into the plastic deformation zone. As soon as the overbending is larger than the spring back of the portion located underneath the points of contact the angle of the section after removal of the load will be smaller than the angle of the vee. A further penetration of the top tool will result in a reopening of the section D and E until the top tool completely bottoms on the material. The smaller seeming width of the vee during coining results in a corresponding reduction of spring back in comparison to airbending. The bending forces required are 4 to 8 times more as for air bending. Capacity required in kN/m for mild steel plates with a tensile strength of Rm = 450N/mm2 Für Edelstahl: Nächstgrössere Matrize verwenden For Stainless Steel: Use next bigger size of bottom tool Bordhöhe DL Typ Typ PH FS (M = 86) BH Operation Flachdrücken Hemming ja / yes nein / no nein / no nein / no ja / yes nein / no nein / no nein / no nein / no nein / no ja / yes nein / no nein / no nein / no ja / yes nein / no Indications with regards of material thickness and angle range refer to mild steel plates with a tensil strength of Rm = 450 N/mm2. Standard bottom tool piece L = 100 mm with holding rail L = 100 mm. 5 standard bottom tool pieces of L=100 mm each assembled on a holding rail of 500 mm length. [. . . ] Enlarged frontplates are necessary for the bottom tools 31. Oberwerkzeuge ­ Zwischenstücke ­ Zwischenstücke mit Horn Top tools ­ Intermediate pieces ­ Intermediate pieces with horn Permitted load (kN/m) Segmente mit Horn / segments with horn Permitted load (kN/m) Segmente mit Horn / segments with horn Permitted load (kN/m) Segmente mit Horn / segments with horn Permitted load (kN/m) Segmente mit Horn / segments with horn Permitted load (kN/m) Segmente mit Horn / segments with horn Size (mm) weight (kg) . [. . . ]