Gang rip saw assembly
AssigneeMereen-Johnson Machine Company
InventorsMax A. Green, Marvin W. Lee
Life of this patent
Estimating the term…
Abstract
Apparatus for adjusting backlash out of a positioning assembly for shaft mounted ring useful in multiple rip saw machinery and for minimizing arbor length. A pair of axially oriented straps secured to the ring and positioned along the shaft for axially positioning the ring on the shaft wherein a radial pin carried by the ring is eccentrically rotatable in a mating aperture in one of the straps to adjust backlash between the straps and the ring out of the assembly when the pin is rotated. The saw hubs and respective saw adjusting collars are arranged in a semi-interleaved nesting relationship resulting in reduced arbor length.
Claims26
A method of adjusting backlash out of a positioning assembly for a shaft-mounted saw hub comprising the steps of:
- a) threadably engaging a threaded member in a shaft-mounted ring radially-inwardly wherein the threaded member has an eccentric pin extending from a radially inward end thereof;
- b) receiving the eccentric pin in an aperture of an axially oriented ring positioning strap to adjustably secure the strap to the ring;
- and
- c) rotating the threaded member through a partial revolution while the pin is engaged with the strap to adjust out backlash between the strap and the ring.
Apparatus for adjusting backlash out of a positioning assembly for a shaft-mounted ring comprising:
- a) a shaft journalled for rotation about a cylindrical axis in a machine frame;
- b) a ring mounted on the shaft and axially movable along the shaft;
- c) a pair of axially oriented straps positioned along the shaft and secured to the ring for axially positioning the ring on the shaft;
- and
- d) a radially-oriented pin carried by the ring and rotatable for eccentric movement with respect thereto and wherein the pin is received in a mating aperture in one of said pair of straps wherein at least said one strap is adjustably secured to the ring by the pin such that when the pin is rotated, backlash between the pair of straps and the ring is adjusted out by the eccentric movement of the pin with respect to the ring.
Assembly for eliminating backlash in multiple rip saw positioning apparatus comprising:
- a) a generally cylindrical arbor having a principal axis and journalled on a machine frame for rotation about the principal axis;
- b) a first saw adjusting collar mounted on the arbor in a proximal region thereof and having a non-rotating first portion journalled on a rotatable second portion;
- c) a first saw hub mounted on the arbor in a distal region thereof and keyed in a driving relationship with the arbor for supporting and rotatingly driving a rip saw blade;
- d) a first pair of straps extending from the first collar to the first hub wherein each strap is secured to the first hub by first fastening means for preventing axial motion between the hub and the straps along the arbor;
- and
- e) second fastening means for adjustably securing at least one of the first pair of straps to the first collar while providing a limited amount of axial motion between the one strap and the first collar such that backlash in the first collar, the first pair of straps and the first saw hub is adjusted out by adjusting the second fastening means to axially move the first collar with respect to the one strap.
Apparatus for minimizing arbor length in an adjustable multiple rip saw positioning assembly comprising:
- a) a generally cylindrical arbor having a principal axis and journalled on a machine frame for rotation about the principal axis;
- b) first and second saw adjusting collars mounted on the arbor in a proximal region thereof;
- c) first and second saw hubs mounted on the arbor in a distal region thereof, said first and second hubs keyed in a driving relationship with the arbor and supporting and rotatingly driving first and second saw blades;
- d) first securing means for rigidly securing the first saw adjusting collar to the first saw hub while permitting axial movement of the first saw adjusting collar and first saw hub together along the arbor;
- e) second securing means for rigidly securing the second saw adjusting collar to the second saw hub while permitting axial movement of the second saw adjusting collar and second saw hub together along the arbor;
- f) an axially movable close-coupled saw assembly formed by a close-coupled third saw, hub and third saw adjusting collar mounted on the arbor said saw hub supporting a third saw blade, said close-coupled saw assembly located intermediate an adjusting collar group formed by the first and second saw adjusting collars and a saw hub group formed by the first and second saw hubs;
- wherein:
- i) the first saw hub is located intermediate the close-coupled saw assembly and the second saw hub, and
- ii) the second saw adjusting collar is intermediate the close-coupled saw assembly and the first saw adjusting collar.
Dependencies are inferred from the claim text.