Patent ID: 9724739
Date: 2017-08-08
CPC Classifications: B21B

Claim:
1. A gap control device for a Pilger die assembly, comprising: a lower plate having a first wedge plate fitted into the first receiving hole, and a second wedge plate fitted into the second receiving hole, wherein the first and second wedge plates, respectively, have inclined surfaces on upper portions thereof; a first adjustment block configured to move on the first wedge plate, and a second adjustment block configured to move on the second wedge plate, wherein the first and second adjustment blocks, respectively, have inclined guide surfaces on bottom surfaces thereof and the inclined guide surfaces of the first and second adjustment blocks slidingly contact with the inclined surfaces of the first and second wedge plates, respectively; an upper plate assembled to an upper portion of the lower plate to cover the first and second adjustment blocks, the upper plate having an assembly hole formed in a central portion thereof which corresponds to the fixing block hole of the lower plate; a first adjustment bolt coupled with the first adjustment block and configured to move the first adjustment block in a horizontal direction, and a second adjustment bolt coupled with the second adjustment block and configured to move the second adjustment block in the horizontal direction, wherein the first adjustment bolt is arranged on the same axial center as that of the second adjustment bolt; and a fixing block seated in the fixing block hole of the lower plate and supporting one end of each of the first and second adjustment bolts.