PROCESS FOR THE BREAKING SEPARATION OF THE BEARING CAP OF A MULTI-PART BEARING ARRANGEMENT, ESPECIALLY IN INTERNAL COMBUSTION ENGINE CRANK-CASES

摘要

PCT No. PCT/EP95/00400 Sec. 371 Date Apr. 30, 1996 Sec. 102(e) Date Apr. 30, 1996 PCT Filed Feb. 3, 1995 PCT Pub. No. WO95/28573 PCT Pub. Date Oct. 26, 1995For a process for fracture separating the bearing cover of a multi-part bearing arrangement, particularly in crankcases of internal-combustion engines, by means of a half-mandrel in a bearing bore partially bounded by the bearing cover, for separating integrally constructed fastening flanges of the bearing cover from the remaining part of the bearing arrangement, it is suggested for producing fracture separating surfaces in planes sloping with respect to one another that the pairs of corresponding fracture separating surfaces of the bearing cover and the remaining part of the bearing arrangement are produced in separating areas which together enclose an obtuse angle ( alpha ) having a case-side vertex by at least one half-mandrel whose curvature radius, as a function of the respective obtuse angle ( alpha ), is selected to be by 0.5% to 5% smaller than the constant radius of the bore receiving the half-mandrel.