Device for manufacturing rotationally symmetrical constructional parts
US4048826A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Mar 26, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2250/33
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The constructional parts have walls formed of elongated juxtaposed tubes, wound spirally about the axis of symmetry of the constructional parts and connected to each other. The tubes are bent to shape by a bending device having at least one bending flank or edge surface conformable to the predetermined 3-dimensional geometry of the part to be manufactured, with one end of each tube being fixed to the bending device and the other end being engaged in a clamping and adjusting device designed as a combined Cardan swivel joint. During bending, the clamping and adjusting device is utilized to continuously control the adjustment parameters of the tube being bent, about three mutually intersecting and perpendicular axes, in conformity with the predetermined three-dimensional geometry of the part, and the radial distance of the swivel joint from the axis of symmetry of the bending device is continuously controlled. A closed-loop control system is provided, and includes an actual-value transmitter, measuring the radial displacement of the swivel joint clamping device relative to the axis of symmetry of the bending device, a reference-value transmitter, having a set point adjusted as a funct…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.