Abstract: A circular saw blade indexing assembly includes a base and a circular saw blade mounting assembly connected to the base and having a saw hub configured to support a circular saw blade. The circular saw blade indexing assembly includes an indexing mechanism connected to the base and having a feed finger disposed at a radial distance from the saw hub, the feed finger configured to rotate the circular saw blade about the saw hub between a first arc position and a second arc position. The circular saw blade indexing assembly includes a radius adjustment mechanism configured to adjust a relative longitudinal position between the saw hub of the circular saw blade mounting assembly and the feed finger of the indexing mechanism.

Abstract: A storage area network controlled, part, by performing the following steps: (i) for each host link of a plurality of host links in a storage area network (SAN), determining a maximum possible data transfer rate; (ii) for each host link of a plurality of host links in a storage area network, determining a maximum permitted data transfer rate based on the maximum possible data transfer rate; (iii) making a plurality of data transfers, through SAN fabric of the SAN and between a storage controller module of the SAN and various host links of the plurality of host links; and (iv) for each data transfer, controlling the data transfer so that a data transfer rate for the data transfer does not exceed the maximum permitted data transfer rate.

Abstract: A circular saw blade indexing assembly includes a frame and a circular saw blade mounting assembly coupled to the frame. The circular saw blade mounting assembly includes a shaft configured to support a circular saw blade and that extends along a longitudinal axis defined by the circular saw blade mounting assembly. The circular saw blade indexing assembly includes an indexing mechanism rotatably coupled to the circular saw blade mounting assembly and having a feed finger disposed at a radial distance from the longitudinal axis. The indexing mechanism is configured to rotate about the longitudinal axis between a first arc position and a second arc position to rotate a saw blade between the first arc position and the second arc position.

Abstract: A saw blade sharpening machine includes a receiving and positioning chuck assembly for setting a saw blade in a grinding position in a plane corresponding to a main saw blade plane; and a grinding device which has a first and a second grinding head for grinding opposite tooth flanks of a saw tooth of the saw blade and an arrangement for moving the first and second grinding heads independently from one another towards and away from the saw blade plane in a direction perpendicularly thereto.

Abstract: A pivot body (22) mounted on a machine bed (20) so as to be capable of swinging defines a lift axis (D) which extends transversely of its own pivot axis (A) and along which a reciprocating slide (24) is movable. Infeed of a saddle (26) on the reciprocating slide (24) can be effected along a spindle axis (E) transversely of the lift axis (D). A tool spindle (28) adapted to receive a tool (30) is supported on the saddle (26) so as to be driven in rotation about the spindle axis (E). Furthermore, a workpiece slide (42) is guided for traversing movement on the machine bed (20) and, together with a workpiece support (44), it defines a central plane (G) extending at right angles to the pivot axis (A). An advance finger (58) is adapted to be engaged intermittently with a respective one of the cutting teeth (12) of a workpiece (10) in order to advance the same.

Abstract: The apparatus comprises a saw blade holder (24), a grinding slide (30) which carries a profiled grinding wheel (38) and is movable to and fro in a strokewise manner with respect to the saw blade holder (24), and a feed slide (40) by means of which a saw blade (10) in the saw blade holder (24) can be advanced in a stepwise manner. A dressing template (50) is arranged at the apparatus in a normally inoperative position and can be moved in intervals into an operative position in which the grinding wheel (38) is dressed by plunging into the dressing template (50). The feed slide (40) can be put out of operation during the dressing intervals. The stroke of the grinding slide (30) is adjustable prior to the next plunging motion into the saw blade (10) corresponding to the radius decrease of the grinding wheel (38) effected by dressing. This simplifies the dressing operation of the grinding wheel (38) and shortens the time required for each dressing operation.

Abstract: The apparatus comprises a saw blade holder (24), a grinding slide (30) which carries a profiled grinding wheel (38) and is movable to and fro in a strokewise manner with respect to the saw blade holder (24), and a feed slide (40). At the feed slide (40) a feed finger (48) can be moved from an inoperative position into a driving position in which it engages after a return motion of the feed slide (40) behind a tooth (12) of a saw blade (10) driving same during the next feed motion. The feed finger (48) can be rendered stationary in its inoperative position during dressing intervals. A dressing tool (50) is arranged at the feed slide (40) in such a manner that it can be moved in the dressing intervals from an inoperative position into a dressing position.

Abstract: A grinding apparatus for side grinding the cutting teeth of band saw blades, in which the band saw blade is oriented in a vertical loop. The apparatus is controlled by a programmable controller and includes redundant indexing mechanisms capable of feeding both right-handed and left-handed saw blades past dual, opposed side grinding elements that side grind the working portion of the sawtooth to predetermined radial and tangential clearance angles and desired dimensions.

Abstract: A sharpener frame is supported relative to a floor and has a front side. A first portion of a band saw is supported at the front side of the frame. A second portion of the band saw is also supported relative to the frame, parallel with the first portion of the band saw, and also at the front side of the frame in one of two locations. Each location is on a different side of the first supported portion of the band saw. A clamp for the band saw tooth being sharpened includes a pair of plates having upper edges generally conforming to the profile of a saw tooth for clamping a substantial portion of the tooth in a fixed position relative to the frame during sharpening. The plates are released after sharpening for positioning a different tooth between the plates. A coolant supply system moves a liquid coolant through channels in the plates that have outlets adjacent to the tooth edge for cooling the tooth during sharpening.

Abstract: A saw regrinding machine includes a circular saw blade mounted for rotation about an axis and having an indexing assembly. A side clamp secures the blade during a regrinding operation to prevent its movement and includes side clamping members having a clamping surface for frictionally engaging the surface of the saw blade that includes a surface portion formed of a resilient compressible material. During indexing the saw blade slides across the deformable resilient material but is not scratched or scuffed. The invention also provides a resilient compressible material as part of the surface of a slip clutch assembly in the form of O-rings surrounding magnetic members embedded in the surface of a flat plate. While magnetic attraction holds the saw blade in place against the plate, rotation is permitted where only the soft compressible O-rings are in contact with the surface of the saw blade. In this way rotation of the saw blade is accomplished without scratching or scarring its surface.

Abstract: A combination saw regrinder for a circular saw blade includes a side grinding assembly for sharpening the side facing portions of a first saw tooth and a top grinding assembly for sharpening the top portions of a second saw tooth comprises a synchronized actuator assembly for carrying out both sharpening operations at opposite radial ends of the saw blade during a single grinding cycle.

Abstract: A top and face grinder for a circular saw blade includes an indexing apparatus which interposes a stop into the path of the teeth of the saw blade from a position laterally displaced from the plane of the saw blade. This stops rotation of the blade and permits a grinding operation to take place. At the end of the grinding operation the stop is retracted to permit continued rotation of the saw blade. The grinding stroke position of the grinding wheel is adjusted by rotating a cam which passes through the fulcrum of a rocker arm providing reciprocal motion for the grinding wheel.

Abstract: An automatic dual-side saw blade grinding machine includes a common actuator to advance the saw blade to place subsequent teeth in position for grinding and to clamp the saw blade to prevent side-by-side movement during grinding. Thus, no adjustment is required to synchronize the timing between blade rotation and clamping. The actuator is a double-acting two-sided pneumatic piston cylinder which has one end attached directly to the clamping mechanism and the other end attached to the spindle that carries the saw blade through a push-pull cable and a linkage that converts linear motion to rotary motion. The linkage is adjustable to accommodate saw blades having different tooth spacing. The piston cylinder is actuated by an air valve that is cycled by a cam driven by the motor that cycles the blade grinding wheels. Accordingly, machine speed can be changed simply by changing the motor speed.

Abstract: A grinding machine for sharpening toothed saws includes a saw blade holder for rotatably holding a saw. A pneumatic or hydraulic ram drives a cam back and forth in one of a number of preselected grooves in a rotatable cam plate for driving a pawl in an arcuate path for rotating the saw blade. Each saw tooth is thus advanced, one tooth at a time, through a grinding position in which a rotating grindstone sharpens the face or top of the saw tooth. The position of the grinder head arm is adjustable through an arc of about 105.degree. to permit top and face grinding without turning over the grindstone or the spindle arm on which the grindstone is mounted. The head arm is tiltably mounted on a heavy plate and releasably secured to the periphery of the plate for stability.

Abstract: A top and face grinder for a circular saw blade including an indexing apparatus which interposes a stop into the path of the teeth of the saw blade from a position laterally displaced from the plane of the saw blade. This stops rotation of the blade and permits a grinding operation to take place. At the end of the grinding operation the stop is retracted to permit continued rotation of the saw blade. The grinding stroke position of the grinding wheel is adjusted by rotating a cam which passes through the fulcrum of a rocker arm providing reciprocal motion for the grinding wheel.

Abstract: An automatic dual side grinding machine includes a pair of rotary spindles mounted for reciprocating movement with respect to a frame for grinding the teeth of a circular saw from the side. The reciprocating movement is provided by a rotary cam member which provides a program of movement for the spindles in a longitudinal direction wherein the grinding wheels move forward at a first rate of speed for a grinding stroke and move rearward at a second rate of speed for a retraction stroke, the retraction stroke being faster than the forward grinding stroke. The grinding wheels are driven in a rotary fashion by motors affixed to the frame which have output belts looped over pulleys mounted on the ends of the spindles. The pulleys have recessed portions for accommodating the belts and raised beveled edges to prevent the belts from slipping off as the spindles move in forward and reverse motion.

Abstract: A circular saw regrinding apparatus includes a frame for supporting a pair of side-by-side mounted grinding wheels connected to spindles which are belt-driven by a pair of motors. The spindles are moved in a reciprocating fashion along their spin axes by a motor driven cam and tie-rod arrangement. The motors are gravity suspended below the spindles from bushed spindle clamps so that they are moved in unison along with the spindles thus obviating the need for motor mounting tracks and an expensive and complex reciprocating drive mechanism for the spindle-motor combination.

Abstract: An automatic dual sidegrinder for a circular saw includes precision adjustments for the tangential grinding angle, the radial grinding angle, and provides a high speed automatic regrinding operation. The tangential angle adjustment is made by a torsion bar that presses against a rotatable index finger stop. The torsion bar is moved by a screw bearing against it mounted in a fixture attached to the frame. The radial angle adjustment is made by turning cams mounted on bolts bored into a frame which are situated in slots cut into movable plates which support rotary grinding spindles. The cams rotate the plates, changing slightly the radial angle of attack of the grinding wheels. The speed of the saw is doubled by indexing the saw on the completion of both a forward and rearward longitudinal stroke of the grinding wheels. The drive motor for the longitudinal motion of the wheels has an output cam shaft with oppositely opposed flats.

Abstract: An apparatus for grinding saw teeth of a saw blade measures and grinds the tip of each tooth independently before advancing successively each tooth on the saw blade for grinding. The apparatus includes a pair of grinding wheels movable toward and away from a sawtooth secured in the grinding position. The grinding wheels are under the control of programmable controller which moves the grinding wheels in response to measurements of the side clearances on the tooth made by a tip measurement probe. The method includes measuring the side clearance of a sawtooth in the grinding position with the probe, comparing the measured dimension to a preselected dimension, and moving the grinding wheels to grind the tooth if the measured dimensions exceeds the preselected dimension. Another measurement is taken and the steps are repeated for each tooth until the sawtooth is ground within the preselected dimension. The next tooth is then advanced to the grinding position.

Abstract: A carriage (28) is supported parallel to the grinding wheel axis (12) on a carrier member (20) which is reciprocable stroke-wise transversely of the grinding wheel axis (12). The grinding wheel (10) is situated on a bearing member (30) which is guided on the carriage (28) parallel to the grinding wheel axis (12) and is adapted to be advanced by an advance gear (44). The adjustment of the carriage (28) relative to the carrier member (20) is limited by a front and a back end stop (56, 58) and is further limitable by two intermediate stops (78, 78') which may be caused to reciprocate selectively between a retracted position and an operating position by a control device (110) responsive to the movements of the carrier member (20).

Abstract: A sawtooth grinding machine has a single pivotally mounted grinding head for grinding both the face and back of teeth, such as in a circular saw blade. The grinding wheel is a composite member formed of a disk wheel and a cup wheel. The disk wheel is shaped to fit into narrow gaps between teeth when grinding the face of a tooth. The cup wheel has a smaller diameter than the disk wheel and has an abrasion-coated ring on its outer circumference for grinding the back of a tooth. A spindle shaft mounts the grinding wheel on the grinding head. The angular displacement of the grinding head for different grinding positions can be reduced as compared to known arrangements. The grinding head is supported for translatory movement in two directions extending perpendicularly of one another and also for rotation about two axes disposed at right angles to one another.

Abstract: A circular saw blade sharpening apparatus using a rotating grinder wheel has a base frame which includes an arcuate, planar adjusting table. An elongated positioning arm has one end rotatably connected to the adjusting table so that it rotates around a saw tip alignment axis located at the center point of the arc of the adjusting table. The other end of the arm rotates over the adjusting table. A saw holding fixture is mounted to move along the positioning arm and permits a saw blade to be mounted so that its tips will intersect the saw tip alignment axis. The grinder wheel is mounted for rotation around an axis parallel to the adjusting table. It can also be moved into and out of engagement with the saw tips to be sharpened.

Abstract: A saw-chain sharpening device is provided which is releasably attachable to a portable chain saw to enable routing-type saw chain cutters to be sharpened in situ on the chain-saw guide bar. The sharpening device comprises a support bridge clampable to the saw guide bar in a position straddling one pass of the chain. This bridge supports a grinding-wheel mounting arrangement which can be set up to orientate a grinding wheel carried thereby into the plane of the routing-edge face of a cutter to be sharpened. Once correctly orientated, the grinding wheel is driven in rotation by external means (such as a conventional electric drill) and approached towards the cutter along a path lying in said plane. This path is defined by a linear guide of the mounting arrangement, the guide being slanted at the undercut angle of the cutter face.

Abstract: A sharpening machine for saws has a mount for a saw blade and a carrier which is adapted to be tilted about an axis of tilt oriented perpendicular to the plane of the saw blade. A support which is supported on the carrier is capable of swivelling relative to the carrier through at least 180.degree. about a swivel axis lying in the plane of the saw blade by a swivelling device and is capable of reciprocating along the swivel axis by a lifting device. A grinding head is supported on the support and carries a plate-shaped or cup-shaped grinding wheel and a grinding motor for driving the grinding wheel. The swivel axis in one operating position of the grinding wheel is contiguous with an active face of the grinding wheel. A second grinding wheel on the grinding head is arranged in offset relationship with respect to the first-mentioned grinding wheel.

Abstract: A method and apparatus for automatically facing saws is described in which a saw blade is held over a spindle by a pair of electromagnets. A pawl engages successive gullets between saw blade teeth in order to index the saw blade. A grinding head mounted on a carrier then moves into engagement with the indexed saw blade until the carrier reaches a limit. Separate hydraulic actuators are used for the pawl and the grinding head carrier so that a sequence of operation can be maintained. The apparatus is adjustable and a counter is provided to automate the sequencing operation. By indexing the saw blade with the pawl, using the electromagnets to hold the saw blade and automatically sequencing the operation, saw blades with irregular tooth patterns and strobe saws having deep-cut rakers extending toward the center of the blade can be automatically faced. A sequence programmer, responsive to a plurality of sensors, controls sequencing of operations of the pawl and grinding head.

Abstract: A machine for the repair of alloy-tipped saw blades is provided. According to the invention, a damaged circular saw blade can be completely repaired at one location. The saw blade is clamped in the machine. Brazing and grinding tools are positioned for repair of the clamped saw blades.

Abstract: Apparatus for sharpening a combination saw blade, the apparatus including a selector for manual input of numbers of cutting teeth and non-cutting tooth spaces on the blade, a counter for counting the number of teeth and tooth spaces moved to a grinding station, the grinding station having a grinding head disposed therein and mounted on a first reciprocating lift mechanism activated by a cam to sharpen each of the blade teeth serially, and a second lift mechanism adapted to operate in response to a signal from the counter to locate the grinding head out of a grinding position when the grinding station is occupied by a non-cutting tooth space, and to place the grinding head under control of the first lift mechanism when the grinding station is occupied by a cutting tooth.

Abstract: Apparatus for converting a manually operated machine for grinding saw blades into automatic operation; including a first hydraulic cylinder for connection to the grinding wheel carriage assembly for reciprocation thereof, a second hydraulic cylinder for connection to a saw blade for incremental rotation thereof, and an electromechanical control circuit for sequencing the operation of the cylinders to automatically position and grind each of a plurality of teeth on a saw blade.

Abstract: A machine for sharpening circular saw blades includes a pneumatically operated indexing mechanism, with the indexing mechanism being responsive to the position of a grinding mechanism which moves perpendicular to the plane of the saw blade to engage the cutting surface of a tooth.

Abstract: A grinding machine is disclosed for supporting a circular saw for rotation about its own axis. The grinding machine includes a cyclically controlled clamp for successively clamping and releasing the saw; a cyclically controlled indexing arrangement for indexing the saw; a cyclically controlled grinding wheel for moving into and out of operative position and a control mechanism arranged so that the clamp is released to allow the indexing arrangement to index the saw but applied during movement of the grinding wheel through the operative position.

Abstract: A cup-shaped wheel having an abrasive rim is employed to edge grind the teeth of a circular saw to an improved contour. The grinding wheel is carried by a slide means which brings the grinding wheel into contact with the teeth of the circular saw. The slide means is also adapted to accomodate a drive motor for rotating the grinding wheel. An adjustble mechanism is incorporated into the slide means to adjust the angle of attack of the grinding wheel. In this manner the contour of the working surface generated can be varied at will. Since only point or edge contact takes place between the abrasive rim and the tooth, the wheel is essentially self-dressing. The method and apparatus are specifically adapted to grinding the carbide tip teeth of steel cutting saw blades. The relative movement of the machine elements is automatically controlled by a programmed electronic unit which, in turn, controls a system of hydraulic pistons.

Abstract: A machine for sharpening saws having alternating precutting teeth and post-cutting teeth of lesser height which reciprocates a grinding wheel to grind first the leading edge of a pre-cutting tooth to a fixed depth, the grinding wheel is then raised to grind the back edge of an adjacent post-cutting tooth and is next lowered to the same depth for grinding the leading edge of the post-cutting tooth and the grinding wheel is finally raised again thereby cutting a lesser amount of the back face of the adjacent pre-cutting tooth. The machine has a first cam actuating mechanism for imparting a fixed length stroke to the grinding wheel and a second cam mechanism coupled to the first mechanism for varying the stroke with adjustments being provided for both mechanisms.

Abstract: A cup-shaped grinding wheel having an abrasive inner rim is brought into grinding contact with a tooth of a circular saw. The angle of attack of the grinding wheel is such that it imparts a second surface to the face of the saw tooth. The second generated surface has a continuous curved contour and a more negative average rake angle than the remaining portion of the face of said tooth. The apparatus and method are especially adapted to grinding the carbide tipped teeth of steel cutting saws but this technique may be used on other saw blades. Movements of the machine elements are automatically governed by a programmed electronic unit which, in turn, controls a system of hydraulic pistons.