| 摘要 |
<p>PCT No. PCT/EP88/00809 Sec. 371 Date May 11, 1990 Sec. 102(e) Date May 11, 1990 PCT Filed Sep. 7, 1988 PCT Pub. No. WO89/02338 PCT Pub. Date Mar. 23, 1989.A press for welding magnetic yokes comprises first and second frames movable toward and away from each other, on which there are defined respective confronting and parallel pressure surfaces (12, 35), a motive means (50) acting between the frames (11, 30) to produce the aforesaid movements, and a presser (14, 36) associated with each of the pressure surfaces (12, 35) to define a saddle-piece for receiving the yoke (3). Between at least one of the pressers (14, 36) and its respective pressure surface (12, 35) there intervening an elastically deformable pillow (39) functioning as an adjuster of the deformation under load undergone by the corresponding pressure surface (12, 35). This pillow is composed of an elastic material which has a behavior under load, within a predetermined range of specific loads, that approaches a hydrostatic behavior, that is, such that for a given increase in the deformation there corresponds a proportionally low pressure increase.</p> |
