Punch Die Process for Medium Wire Cutting EDM Machine

1. How to Process Punches in Medium Wire Cutting EDM Machine

The punch plays an important role in the production and processing of the enterprise. The design of the shape, dimensional accuracy and hardness of the material directly affects the stamping quality, service life and precision stamping parts of the mold. In the actual production process, deformation occurs due to thermal stress generated by mechanical discharge and residual stress inside the workpiece. Therefore, in the process of processing, in order to prevent deformation, the threading hole should be closed-cut first.

If the blank size of the workpiece is limited to closed-form cutting, the cutting path should be designed in advance for a square workpiece during programming. During the machining process, the cutting path should be selected to ensure that the workpiece and the clamping support are always kept in the same coordinate system, so as to avoid the influence of stress and deformation on the workpiece.

The fixture is fixed on the left side, cutting from the left gourd-shaped punch according to the counterclockwise direction, dividing the blank into two parts on the basis of the cutting route, and the blank workpiece on the left and right sides will be cut along with the cutting. Smaller and smaller, the right-hand side of the blank and the fixture gradually move away from the internal residual stress and deform. If cutting in a clockwise direction, the clamping part is the workpiece on the left. Usually, the fixture and the workpiece are fixed in the same coordinate system during the operation, so that it has good rigidity and prevents deformation caused by stress. During the whole cutting process, at the end of a reasonable cutting path, most of the workpiece should be separated from the clamping part, that is, the pause point (support part) should be close to the clamping end of the blank.

First of all, the drawings in the process of processing were analyzed, the route was determined, the precise method of process parameters was mastered, stamping programming, and the application of automatic programming software was proficiently compiled. Through long-term on-site processing experience, master the dimensional accuracy of mold parts The control method, through long-term experience in the field of mold processing, try to accurately grasp the size of mold parts.

In order to make the wire cutting machine tool run efficiently and stably, the user should pay attention to strictly refer to the product description during the operation.

2. Ways to Improve the Efficiency of Medium Wire Cutting EDM Machine

Usually, there are two main ways to improve the work of wire cutting, namely the current carrying capacity of the molybdenum wire and the turbidity that is not removed in time in the cutting seam, and its conductive effect consumes the pulse energy. After the reason, we can implement a better response method according to the specific situation:

1. Increase the peak current and the energy of the pulse amplitude. In order to reduce the load of the molybdenum wire, the pulse interval should be appropriately increased so that the average value of the current is controlled within a stable range.

2. Ensure the dielectric coefficient of cutting fluid and its dielectric strength, maintain high spark explosion force and cleaning ability, and reduce the short-circuit effect of corrosive objects on pulses.

3. Reasonably increase the wire running speed of the machine tool, so that the wire enters the gap faster, the amount of water entering the gap increases, and the discharge effect is better

4. The mechanical precision of the wire cutting system is high, because the narrow gap is always faster than the wide gap, and the straight seam is faster than the crease.

5. The encapsulation performance of water on the outer wire of the gap is improved, that is, the water is accelerated by the wire, and the accelerated water has a strong cleaning effect on the gap.

6. The frequency tracking sensitivity is improved, and the pulse utilization rate is increased.

7. Reduce the commutation time of the wire-feeding motor, and the startup will be faster, which can effectively increase the processing time.