Manufacture method of power transmission chain and pin-retainer jig
AssigneeJtekt Corporation
InventorMasaru Fuse
Life of this patent
Estimating the term…
Abstract
A method of manufacturing of power transmission chain 1 by interconnecting plural link plates 2 with pins 3. Individual pin pairs 3 are arranged and temporarily fixed to places. The link plates 2 are sequentially stacked in layers by press-fitting respective through-holes 4 of the link plates 2 about the respective pin pairs 3, whereby the link plates 2 are interconnected to form a circular chain (an endless loop). Subsequently, the individual pin pairs 3 are released from the temporarily fixed state. Thus, the manufacture of the power transmission chain 1 is decreased in the number of operation steps, so that the chain may be assembled easily.
Claims11
A manufacture method of power transmission chain which accomplishes the interconnection of a plurality of link plates, the method comprising the steps of:
- arranging a plurality of pins at a predetermined pitch and retaining the pins in an endless loop form;
- forming an endless loop chain by sequentially stacking the link plates in layers such that a pair of the pins inserts through a corresponding one of through-holes of a corresponding one of the link plates, wherein the stacking step is performed such that after stacking the corresponding one of the link plates to the pair of the pins, one of the pair of the pins is slidable relative to the corresponding one of the link plates;
- and
- releasing the individual pins from a retained state.
A pin-retainer jig for use in the manufacture of a power transmission chain in which a plurality of link plates formed with through-holes are stacked in layers and pins are inserted through the through-holes placed in intercommunicating relation, thereby interconnecting the plural link plates,
- wherein the pin-retainer jig includes a plurality of retaining holes to retain the pins arranged at a predetermined pitch and in an endless loop form, and
- wherein each of the retaining holes has a top inner surface and a bottom surface inner surface, the top inner surface protruding downwardly and the bottom surface inner surface upwardly toward the top inner surface.
Dependencies are inferred from the claim text.