Machining device for the production of a plasticizing cylinder

• Main Author: MAYER LUDWIG
• Format: Patent
• Language: English
• Published: 27.06.2007
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BORING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; TURNING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a machining device for producing a plasticizing cylinder (20, 20') with at least one conical screw-type bore. Said machining device comprises a clamping mechanism (12, 12', 14, 14') for mounting the plasticizing cylinder (20, 20') that is to be machined as well as a machining unit (40, 100) for machining the conical screw-type bore. According to the invention, the clamping mechanism (12, 12', 14, 14') is rotatably driven and is configured for eccentrically accommodating the plasticizing cylinder (20) that is to be machined such that the plasticizing cylinder (20) is made to gyrate in a wobbling manner about the axis of symmetry thereof when the clamping mechanism (12, 12', 14, 14') rotates, the future centerline of the conical bore forming the axis of rotation. The machining unit (40, 100) is provided with a turning chisel (46, 106) which can be linearly moved back and forth in the direction of the axis of rotation.