GB1390204A - Deburring of chain links - Google Patents

Abstract

1390204 De-burring chain links MEYER ROTH & PASTOR MASCHINENFABRIK GmbH 13 March 1972 [11 March 1971] 11698/72 Heading B3L A method of deburring chain links having a circular link leg cross-section comprises using a device having a burring cutter displaceable in the direction of the link leg axis, said cutter having a cutting edge extending 180‹ in the circumferential direction of the chain link, and also having an actuating device whereby the burring cutter is pivotable about the link axis from an outside position situated symmetrically with respect to the link central plane through 90 degrees in both circumferential directions, wherein the actuating device advances the burring cutter from an initial position situated outside the link region first of all to short of the ridge, then pivots it through 90 degrees in one direction about the link axis, then pushes it forward again over the ridge in the direction of the link by axis for the first partial deburring operation, and moves it back, pivots it in the other direction through 180 degrees, advances it again over the ridge for the second partial deburring operation, then pivots it back in the first pivoting direction into the outside position, and finally returns it into the initial position. The cutter may be designed to cut in both directions of movement so that the return stroke prior to the second partial deburring operation is negated. Fig. 6 shows the cutting edge divided into two mutually symmetrical half-edges each forming a quarter of a circle, which is a convenient of making a cutting edge with the required obliquity.