| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to metal forming and can be used for aperture piercing in hollow part walls, for example, conductor lugs. Proposed device comprises working unit with detachable puncher, female die and power drive. Is differs from known designs in that working unit is a detachable design to allow adjustment of the appliance working stroke. Note here that said female die is composed of sections secured at clamps arranged to open and to close and to reciprocate vu said con rod relative to male die fixed in said unit.EFFECT: higher efficiency and quality.5 cl, 3 dwg |
