(1) Space requirements. The punching machine can process multiple surfaces after installing the workpiece at once, so it is required that the fixture can meet the space requirement that all cutting tools have the possibility of approaching all machining surfaces. In addition, the support plate of the surrounding fixture has movements such as movement, lifting, sinking, and rotation, so the fixture should not interfere with the leather punching machine tool in any way.

(2) Quickly readjust requirements. Numerical control machining can change the machining object by quickly changing the machining program. In order to reduce the auxiliary time of changing fixtures and the waiting time of valuable equipment, it is required that the fixture has the function of quickly readjusting or replacing positioning clamping components when replacing the machining workpiece. In addition, due to the multi surface processing in CNC machining, the processing time of a single piece increases. If the fixture is designed to be able to replace the workpiece outside the working area of the machine tool, it can improve production efficiency.

(3) Positioning requirements. The workpiece should be fully positioned in the fixture, and the base liquid of the workpiece should have a strictly determined position relative to the machine origin to meet the requirement of achieving relative motion between the workpiece and the tool in the machine coordinate system. At the same time, the fixture should also be fully positioned on the machine tool, and each positioning surface on the fixture should have precise coordinate dimensions relative to the machine tool origin to meet the requirements of positioning and installation in CNC machining.

(4) Accuracy requirements. Due to the characteristics of continuous and automatic processing of multiple surfaces in leather punching machines, the requirements for punching machine fixtures are higher than those for general machine tool fixtures in terms of accuracy and rigidity. This can reduce the positioning error, clamping error, and deformation error of workpieces in fixtures and rough machining.

The article is from Jiangmen Leather Punching Machine:http://www.hslichuang.com/