摘要:
A method of, and apparatus for, grinding cutting tools attached to a cutter head for gear cutting machines, the cutter head having sets of cutting tools encompassing three respective groups of cutting tools, specifically inner cutters, outer cutters and auxiliary cutters. Two groups of the cutting tools are removed from the cutter head, the first group of cutting tools is completely ground at the cutter head, the second group of cutting tools is inserted into the cutter head and completely ground, and then the third group of cutting tools is inserted in the cutter head and completely ground.
摘要:
The disclosure embraces a method of and apparatus or grinding machine particularly for grinding or sharpening the teeth of rotary cutters or cutting tools, the apparatus including a reciprocable ram mounting a rotatable grinding wheel, a vertically movable work or cutter supporting means and a work or cutter indexing means, the reciprocable ram, the feeding means for the grinding wheel, the movable cutter supporting means and the cutter indexing means each being driven or actuated by a hydraulically actuated rotary motor individual to each of these instrumentalities and controlled by means operable to effect automatically the grinding of all of the teeth of a cutter or cutting tool.
摘要:
A grinding-protection shroud and guide unit for attachment to a grinding machine for grinding fluted tools, especially tapered end mills having a finger-guide support horizontally adjustable relative to the grinding wheel, the shroud encompassing more than 180 degrees of the wheel and including an extended portion with a light and a vacuum-hose connector.
摘要:
A DEVICE FOR GRINDING A DIE-SINKING CUTTER MEMBER SUCH THAT THE CUTTER TEETH CHANGE WITHOUT INTERRUPTION FROM A SPIRAL ARRANGEMENT ON THE CALOTTE OF THE CUTTER MEMBER TO HELICAL ARRANGEMENT ON THE CYLINDRICAL OR JACKET PORTION OF THE MEMBER. AN INDEXING HEAD PROVIDED WITH A SPINDLE FOR RECEIVING THE CUTTER MEMBER IS ADJUSTABLY MOUNTED ON AN ARM PIVOTABLE ON A CONVENTIONAL GIRDING TABLE, THE RECTILINEAR MOTION OF WHICH IS TRANSMITTED AS ROTARY MOTION TO THE SPINDLE ON THE INDEXING HEAD THROUGH APPROPRATE BELT DREVEN SHAFTS, THE ANGLE OF PIVOTAL MOVEMENT OF THE ARM IS ADJUSTED BY MEANS OF SUITABLE STOPS, AND UPON RECTILINEAR MOVEMENT
OF THE TRAVELING TABLE, THE ARM IS CAUSED TO PIVOT IN ADDITION TO TRANSMITTING ROTARAY MOTION TO THE SINDLE ON THE INDEXING HEAD, WITH THE RESULT THAT A SPHERICAL TOOTH OF THE DIE-SINKING CUTTER POSITIONED ON THE SPINDLE OF THE INDEXING HEAD IS LED ALONG A CONVENTIONAL GRINDING WHEEL IN ACCORDANCE WITH ITS INITAL SPIRAL SHAPE.
摘要:
A cutterhead carries a plurality of cutting tools arranged in helical rows and disposed in separate recesses which preferably are round. A locking structure including a locking cup and screw is disposed in a separate round recess adjacent the recess in which the cutting tool is disposed and partly in communication with that recess at the cutter surface, whereby automatic alignment of these portions will be achieved upon insertion. The shank of each tool has a tapered portion which is inclined to the axis of the recess with the widest part of the tool being located at the bottom of the recess into which it is disposed. The locking cup also has a tapered wedge portion which engages the cutting tool wedge portion. When the locking screw is forced downwardly, it forces the locking cup''s tapered surface against the corresponding juxtaposed cutting tool''s tapered shank portion, thereby locking the cutting tool within its recess. Preferably the shanks are bored longitudinally so that an adjusting tool can be passed to an adjusting screw disposed in the lower threaded portion of the bore to adjust the relative positioning of the cutting tool with respect to the surface of the head. Means are also provided whereby the withdrawal of the locking cup releases the cutting tool and a method is disclosed whereby the locking of the cutting tool is made more effective.
摘要:
Apparatus for supporting a tool which must be accurately moved along a predetermined path relative to a cutter, grinding wheel, polishing wheel or the like for forming, grinding, polishing, and/or refluting of the tool wherein improved mechanism is provided for enabling variable proportioning of tool rotation and translation. A simple rack and pinion mechanism is incorporated in the work moving apparatus so that a desired change can be made in the amount of rotation of the tool achieved for each unit of translatory movement of the tool.
摘要:
THE DISCLOSURE EMBRACES A GRINDING APPARATUS OR MACHINE ESPECIALLY ADAPTED FOR GRINDING THE TEETH OF TOOTHED CUTTERS OR WORKPIECES WHEREIN THE RAM CARRYING THE GRINDING WHEEL IS RECIPROCATED IN A STRAIGHT LINE, THE GRINDING APPARATUS INCLUDING A UNIVERSALLY MOUNTED WORKPIECE OR CUTTER SUPPORT FOR GRINDING TEETH OF VARIOUS ANGULARITIES, THE CUTTER BEING AUTOMATICALLY INDEXED BETWEEN SUCCESSIVE GRINDING STROKES AND THE GRINDING APPARATUS AUTOMATICALLY BROUGHT TO REST UPON COMPLETION OF GRINDING OPERATIONS ON A CUTTER OR WORKPIECE.