摘要:
Compression return springs (5462) can be mounted on rails between the driver (32) and an impact absorber (6020). The springs (5462) include a plurality of wires twisted together to form a multi-stranded twisted wire member, which forms the coils of the spring (5462). The springs (5462) can have an inner diameter that resists movement of the coils along the rails when the spring is at its free length, but has a mounted inner diameter that freely allows such movement. The coil-to-coil pitch of the spring (5462) can vary along its length. A motor (40) initially rotates the flywheel (42) without engaging the driver (32). The driver (32) then contacts the rotating flywheel (42) to propel the driver (32), which compresses the return springs (5462) against the impact absorbers (6020) as the driver (32) travels from the returned position to the extended position.
摘要:
A follower assembly includes a follower mounted on an axle with the axle being coupled to a carrier that is pivotable relative to the frame about a pivot axis. The follower assembly has a locked position in which the pivot axis and axle are positioned relative to each other in a locked over-center position. In the locked over-center position the driver is pinched between the follower assembly and the flywheel subjecting the driver to a pinch force when the driver is in the stall position. When the driver is in the stall position and the follower assembly is in the locked over-center position, pivotal movement of a stall release lever toward the release position forces the follower assembly out of the locked over-center position toward the reverse over-center position in which the relative positions of the pivot axis and axle are reversed and the pinch force is released.
摘要:
A contact trip adjustment assembly for a power nailer comprising: a slider plate (53); an adjustment plate (52) including a slot (56,58) with a plurality of positions, said adjustment plate slidably mounted to said slider plate; and a contact trip member (46) that engages said slot of said adjustment plate, wherein said contact trip member moves through said plurality of positions of said slot to adjust a depth of said contact trip member.
摘要:
A method for controlling a driving tool (10) having a power source (30), a driver (32), an actuator (44), a follower (34), and a control unit (20). The power source includes a motor (40) and a flywheel (42) that is driven by the motor. The actuator is configured to selectively move the follower to push the driver into frictional engagement with a surface of the flywheel. The control unit is configured to selectively activate the electric motor and the actuator. The control unit includes a speed sensor (5000) that is configured to sense a rotational speed of an element of the power source and produce a speed signal in response thereto. The method includes: directly determining a rotational speed of an element in the power source; controlling electrical power provided to the motor based on the rotational speed of the element in the power source to cause the flywheel to rotate at a predetermined speed; and actuating the actuator when a set of actuating criteria has been met, the set of actuating criteria not including a rotational speed of the element.
摘要:
A fastening tool includes a housing assembly having a nosepiece and a magazine assembly that is coupled to the housing assembly. The magazine assembly includes a canister, a door structure, a feed pawl and a follower structure. The canister is configured to hold a plurality of collated fasteners and has a first canister portion and a second canister portion that is movable relative to the first canister portion between a closed position and an open position. The fastening tool further includes a coil feeder assembly having an indexing pawl. The indexing pawl advances a fastener into operative engagement with the feed pawl upon movement of the second canister portion from the open position to the closed position. The movement of the indexing pawl may be effectuated by an electric actuator.
摘要:
A fastening tool includes a housing assembly having a nosepiece and a magazine assembly that is coupled to the housing assembly. The magazine assembly includes a canister, a door structure, a feed pawl and a follower structure. The canister is configured to hold a plurality of collated fasteners and has a first canister portion and a second canister portion that is movable relative to the first canister portion between a closed position and an open position. The fastening tool further includes a coil feeder assembly having an indexing pawl. The indexing pawl advances a fastener into operative engagement with the feed pawl upon movement of the second canister portion from the open position to the closed position. The movement of the indexing pawl may be effectuated by an electric actuator.