| 摘要 |
1,148,121. Cleaning tubes &c. M. VON BUSHE and T. ALTENBRACHT [trading as TH. KIESERLING & ALBRECHT]. 14 March, 1967 [10 Oct., 1966], No. 11996/67. Heading F2N. [Also in Division B3] In a machine for descaling tubes wherein the tube is secured against rotation and is passed through a rotating cutter head in which the cutting tools are radially adjustable during rotation of the head, means are provided to sense and indicate any deviation from a desired diameter of the machined tube and to automatically adjust the cutters to the required diameter. The tube is fed by rollers 1, 1a through the cutter head 3 whereafter it is gripped and held by clamping jaws 7, 7a the upper jaw 7a being mounted on a slide so as to be adjustable to accommodate different size work. Between the head and the clamping jaws is located a sensing device which continuously measures the diameter of the machined tube. The sensing device comprises upper and lower feeler members 9a and 9 carried in body members 16 and 14 respectively which are adjustable relative to each other by a screw turn-buckle 15. The body members are themselves releasably secured in a frame 17 by screw handles 28, 29, the frame being resiliently carried in a carrier frame 20 by a spring 21. The upper feeler member 9a is connected by a plunger 22a, biased by a spring 23, to an electrical inductive senser 10, as that any movement of the feeler member 9a due to a change in the diameter of the tube causes pulses to be transmitted via an amplifier and a comparator to an instrument 13. The signals received from the sensor are subsequently transmitted to a motor for the operation of a worm 41 connected to a thread sleeve 34 in the cutter head. The rotation of the sleeve 34 and the axial displacement thereof causes the radial displacement of the cutting tools 30 by co-operation of the tool holder 31 with an internal central surface 33 of the sleeve. |
