摘要:
A vibration reduction apparatus 501 for use with a hammer tool having a hammer piston 520 is shown. The hammer piston 520 is caused to reciprocate in cylinder 530 by rotation of a gear wheel 523 about axis 524, the hammer piston 520 being mounted to the gear wheel 523 via piston arm 531 and pivot pin 522. Reciprocating motion of the hammer piston causes a flying mass 569 to be driven along cylinder 530 to impart a hammer action to a bit of the tool. The gear wheel 523 is caused to rotate about axis 524 by meshing of gear 514 on drive shaft 511 with gear teeth 532 on the periphery of gear wheel 524, the drive shaft 511 being caused to rotate by a motor (not shown) of the tool. a cam 533 is rigidly mounted around gear wheel 523, a counterweight 521 surrounds piston cylinder 530, and a cam follower 534 is provided on counterweight 521. The cam follower 534 on counterweight 521 is urged into contact with cam 533 by means of a compression spring 535. The external profile of the cam 533 is such that rotation of gear wheel 534 to cause reciprocating motion of hammer piston 520 causes oscillation of counterweight 521 relative to piston cylinder 530 in antiphase to motion of the hammer piston 520 to counteract vibrations produced by operation of the hammer action of the tool..
摘要:
A vibration reduction apparatus 501 for use with a hammer tool having a hammer piston 520 is shown. The hammer piston 520 is caused to reciprocate in cylinder 530 by rotation of a gear wheel 523 about axis 524, the hammer piston 520 being mounted to the gear wheel 523 via piston arm 531 and pivot pin 522. Reciprocating motion of the hammer piston causes a flying mass 569 to be driven along cylinder 530 to impart a hammer action to a bit of the tool. The gear wheel 523 is caused to rotate about axis 524 by meshing of gear 514 on drive shaft 511 with gear teeth 532 on the periphery of gear wheel 524, the drive shaft 511 being caused to rotate by a motor (not shown) of the tool. a cam 533 is rigidly mounted around gear wheel 523, a counterweight 521 surrounds piston cylinder 530, and a cam follower 534 is provided on counterweight 521. The cam follower 534 on counterweight 521 is urged into contact with cam 533 by means of a compression spring 535. The external profile of the cam 533 is such that rotation of gear wheel 534 to cause reciprocating motion of hammer piston 520 causes oscillation of counterweight 521 relative to piston cylinder 530 in antiphase to motion of the hammer piston 520 to counteract vibrations produced by operation of the hammer action of the tool..
摘要:
A hammer drill includes a motor; a spindle rotatingly driven by the motor and holding an output bit; a motion conversion member for converting rotational movement of the motor to reciprocating movement; a striker reciprocatingly driven by the motion conversion member for applying an axial striking force to the output bit; a striking-motion-releasing mechanism for releasing the striking force applying action exercised by the striker; and a tightening-torque adjusting clutch for interrupting the transfer of the rotational force to the output bit by increasing a load torque.
摘要:
A hammer comprising: a housing (2); a motor mounted within the housing; a tool holder (8) rotatably mounted on the housing (2) for holding a cutting tool; a striker (24;874;924) mounted in a freely slideable manner within the housing, for repetitively striking an end of a cutting tool when a cutting tool is held by the tool holder (8), which striker is reciprocatingly driven by the motor, when the motor is activated, via a drive mechanism; wherein the drive mechanism comprises: a pivoting drive arm (246;857;914) pivotally mounted within the housing (2) at one end and which is drivingly connected to the striker (242;874;924) a pivotal drive mechanism connected to the pivoting drive arm (246;857;914) which converts a rotary movement generated by the motor to an oscillating pivotal movement of the pivoting drive arm (246;857;914) about its pivot point; characterised in that the size of the amplitude of the oscillations of the pivoting drive arm (246;857;914) can be adjusted.
摘要:
Die Erfindung betrifft einen handgeführten Bohrhammer (1) oder Meißelhammer mit einem Schlag- oder Hammerwerk (2). Der Bohrhammer (1) oder Meißelhammer umfaßt ein Getriebegehäuse (3) mit einer im Getriebegehäuse (3) gelagerten Werkzeugspindel (4) sowie einen Schwingungstilger (5) mit einer federnd beweglich gelagerten Tilgungsmasse (6). Die Tilgungsmasse (6) ist im Getriebegehäuse (3) auf einem Achsbauteil (7) gelagert.
摘要:
A vibration reduction apparatus (501) for use with a hammer tool having a hammer piston (520) is shown. The hammer piston (520) is caused to reciprocate in cylinder (530) by rotation of a gear wheel (523) about axis (524), the hammer piston (520) being mounted to the gear wheel (523) via piston arm (531) and pivot pin (522). Reciprocating motion of the hammer piston causes a flying mass (569) to be driven along cylinder (530) to impart a hammer action to a bit of the tool. The gear wheel (523) is caused to rotate about axis (524) by meshing of gear (514) on drive shaft (511) with gear teeth (532) on the periphery of gear wheel (524), the drive shaft (511) being caused to rotate by a motor (not shown) of the tool. a cam (533) is rigidly mounted around gear wheel (523), a counterweight 5219 surrounds piston cylinder (530), and a cam follower (534) is provided on counterweight 521. The cam follower 534 on counterweight 521 is urged into contact with cam (533) by means of a compression spring (535). The external profile of the cam (533) is such that rotation of gear wheel (534) to cause reciprocating motion of hammer piston (520) causes oscillation of counterweight (521) relative to piston cylinder (530) in antiphase to motion of the hammer piston (520) to counteract vibrations produced by operation of the hammer action of the tool
摘要:
Bei einem Bohrhammer (1) wird das Schlagwerk (5) durch Andruck des Werkzeugs (9) an eine Bearbeitungsstelle in Gang gesetzt. Dabei verschiebt das Zahnrad (30) ein äußeres Exzenterteil (21) gegenüber einem inneren Exzenterteil (20) axial. Durch eine Kurvenbahn (37) im äußeren Exzenterteil (21) und einen feststehenden Führungsstift (36) im inneren Exzenterteil (20) verdrehen sich die beiden Teile bei Axialverschiebung begrenzt gegeneinander. Mit der Drehung ändert sich die Gesamtexzentrizität des Antriebsglieds (13) von Null bis zu einem Maximalwert. Die so ausgebildete Schlagwerkskupplung hat den Vorteil, daß sie geräuschlos und verschleißarm arbeitet.
摘要:
Un marteau perforateur (3) présente une douille de guidage (6) en trois parties. Sur un tube de guidage (7) en acier non-trempé est fixé un porte-outil en acier trempé (8) au moyen de raccords axiaux (24, 25, 28). En outre, le tube de guidage (7) porte, pour l'établissement de la liaison avec le pignon de commande (12), une bague à crans (9). La bague à crans est fixée au tube de guidage (7) au moyen de trois rouleaux (30) permettant une bonne transmission du couple de rotation. Cette conception offre l'avantage qu'il ne faut plus tremper la douille tout entière (6), mais seulement le porte-outil (8) et la bague à crans (9). Le tube de guidage (7) peut être en acier doux. Les raccords (24, 25, 28) et (30, 31, 32) assurent une transmission de la force par une grande surface de contact, de manière à éviter, sur le tube de guidage doux, l'usure connue avec les techniques de liaison traditionnelles.