H10 TOOLING RESIN FIBROLIT®-ZWO / FIBROFIX®-SECHS - EXAMPLE APPLICATIONS ø 3 ø 0,9 punch guiding stripper matrix casting resin magnetic vee block punch guiding stripper plasticine matrix casting resin paper gasket or release agent spacer punch guiding stripper casing resin punch guiding stripper wear plate casting resin oil well punch casting resin Casting of punch guides in guiding strippers (with sliding movement) Suitable apertures in the stripper can be marked out from finished matrix. Allowance must be made for a casting gap of 1 - 3 mm around the punch. Prolonged storage and cold can cause the resin to become stiff and unworkable. Place resin container in hot water of about 60 °C, then stir thoroughly and let cool down to room temperature. Fig. 1: Casting of punch guide in guiding stripper Quite often it will suffice to drill a hole in approximation of a shaped aperture – as shown in fig. 2. Fig. 2: Cast guide for form punch For casting of very narrow gaps there is also the option to use FIBROLIT® thinner. The sawn or drilled contours must be degreased. As shown in figure 1, the prepared guide plate is clamped with the cutting plate and the punch, the punch coated with a release agent is inserted into the opening and aligned. Before casting, it is advisable to limit the overflowing casting resin mass with a plasticine edge. It also serves as a casting aid. Paper or release agent is applied between the cutting and guide plates to prevent mutual sticking. The vertical position of the punches is achieved via a magnetic angle. There are various methods for maintaining the kerf in the cutting plate. A common method for alignment between the punch and the hole in the hardened cutting plate, which is also preferable for repairs, is the interposition of metal foils or nylon fabrics according to the desired kerf. In the case of split cutting plates ground to shape, it is also customary to pregrind the apertures first cylindrically without kerf. Only after casting the guide plate are the kerf and regrinding implemented on the cutting plate inserts. With simple dies, the following execution leads to expedient and good results: Fig. 3: Casting of punch guide with basic blanking tools The punch is aligned in terms of dimensions and angles. After pressing the punch into the cutting plate, the guide rails are removed and the cutting plate is pinned to the guide plate prepared for casting. This is followed by casting and finishing the cutting plate breakthrough. For guide cuts, the guide plate or the wiper can be provided with additional plates on the underside, figure 4. These plates prevent premature wear of the punch guide plate. The oil pan for fast-running tools is also produced during the pouring process. Fig. 4: Cast punch guide with oil well and wear plate underneath stripper Quill punches ought to be given maximum support over their length; a typical cast stripper guide for such thin punches is shown in fig. 5. Fig. 5: Cast guide for thin Quill-Type Punch
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