Abstract:
The invention relates to a medical, especially dental, hand-piece (1, 1'), comprising: an instrument retaining/release device (2) comprising a hollow shaft (3), which can be set in a drive motion for receiving a treatment instrument (4), wherein the hollow shaft (3) extends along a center axis (5) and has an instrument receiving orifice (6); a first retaining unit (7) and a second retaining unit (8), which is separate from the first retaining unit (7) and in relation to the center axis (5) is axially spaced from the first retaining unit (7), wherein both retaining units (7, 8) are designed to axially secure a treatment instrument (4) received in the hollow shaft (3) and to transmit a torque to the treatment instrument (4), and wherein both retaining units (7, 8) each have at least one shaped element (9, 10) and a borehole (12, 13) which penetrates the outside wall (11) of the hollow shaft (3) and in which the at least one shaped element (9, 10) can be received such that it protrudes through the borehole (12, 13) into the inside of the hollow shaft (3); a locking sleeve (14) which interacts with the shaped elements (9, 10), can be moved relative to the hollow shaft (3) and surrounds the hollow shaft (3), and an actuating element (15) interacting with the locking sleeve (14) for moving or displacing the locking sleeve (14).
Abstract:
Ein einfach herstellbares Hydraulik-Dehnspannfutter (1) umfasst ein werkzeugseitiges Ende (3) sowie ein maschinenseitiges Ende (4). An dem maschinenseitigen Ende (4) ist ein Schaft (7) zum Einspannen des Dehnspannfutters (1) in einer Werkzeugmaschine angeordnet. An dem werkzeugseitigen Ende (3) ist eine von einer Druckkammer (22) umgebene Dehnbuchse (21) angeordnet, die zum Einspannen eines Werkzeugs unter Wirkung eines in der Druckkammer (22) aufgenommenen Druckmediums (F) radial verformbar ist. Das maschinenseitige Ende (4) ist hierbei durch einen den Schaft (7) tragenden Grundkörper (8) gebildet, an den werkzeugseitig eine die Druckkammer (22) außenseitig begrenzende Spannhülse (9) starr angefügt ist. Im Inneren der Spannhülse (9) ist eine sowohl von der Spannhülse (9) als auch von dem Grundkörper (8) separate Innenhülse (12) eingefügt, die die Dehnbuchse (21) beinhaltet und die Druckkammer (22) innenseitig begrenzt. Die Innenhülse (12) weist hierbei an ihrem werkzeugseitigen Ende (3) einen radial nach außen ragenden Ringkragen (14) auf, der mit der Spannhülse (9) überlappt.
Abstract:
A tool clamping chuck (1) designed for automatic clamping by means of an automatic spindle on a machine comprises a device (10) for supplying a coolant or lubricant to a medium duct (8) of a tool (7) held in the clamping chuck (1). A coupling sleeve (11) which serves as a coupling for a supply line of a clamping device that supplies coolant or lubricant is arranged in the clamping chuck (1) and elastically received in the clamping chuck. An adjusting screw with a through-hole is arranged after the coupling sleeve (11), in the direction of the tool (7). The adjusting screw can be moved relative to the clamping chuck (1) along a longitudinal axis (2) of the clamping chuck (1). A tubular element (12) is guided in the coupling sleeve (11), can be moved in the coupling sleeve (11) along the longitudinal axis (2) of the clamping chuck (1), and points in the direction of the adjusting screw (13). According to the invention, a spring system (14) is arranged in such a way that it allows the tubular element (12) to move in a spring-supported manner along the longitudinal axis (2) of the clamping chuck (1) and to be pressed against the adjusting screw (13) by the force of the spring.
Abstract:
The invention concerns a spring collet whereof the body (1) is divided into a fixed part (6) forming a rigid support and a mobile part (7) forming a flexible element linked to the rigid support by the flexible wall (8). Each part comprises one of the jaws (18, 19). The conical spring washer (2) inserted between the fixed and mobile parts (6, 7) is maintained in place by the flat head screw (3) The stop screw (4) is locked by the lock nut (5). To engage or release the part to be machined, an outer member presses against the surface portion (30) of the table (14) so as to compress the spring washer (2) thereby causing the element (7) to pivot on the wall (8) and spacing apart the jaws (18, 19) from each other.
Abstract:
Le corps de pince (1) est divisé en une partie fixe (6) formant un support rigide et une partie mobile (7) formant un élément flexible relié au support rigide par la paroi flexible (8) . Chaque partie comporte une des mâchoires (18, 19) . La rondelle élastique conique (2) insérée entre les parties fixe et mobile (6, 7) est tenue en place par la vis à portée (3) . La vis de butée (4) est bloquée par le contre-écrou (5) . Pour engager ou dégager la pièce à usiner, un organe extérieur appuie contre la portion de surface (30) de la table (14) de façon à comprimer la rondelle élastique (2) ce qui fait pivoter l'élément (7) sur la paroi (8) et écarte les mâchoires (18, 19) l'une de l'autre.
Abstract:
The present invention refers to a key cutting machine for the 10 duplication of keys, in particular of so-called "laser-type" keys, comprising a mechanical machining unit (1) connected to an electronic control unit (2) that is provided with memory means for storing the coded data of the keys to be duplicated, in which said mechanical machining unit comprises, along with a tracer or key follower (15) for tracking the bit notch pattern of 15 the keys to be duplicated, a spindle (13) and a milling cutter (14) associated thereto, both said cutter and said spindle being adapted to be driven rotatably about the axis thereof, as well as a carriage (5) on which there is mounted a jaw (9), said carriage being movable on the base-plate (4) of the mechanical machining unit in a plane that is orthogonal to the 20 plane of the milling cutter and the key follower or tracer. Said milling cutter (14) is temporarily attached to the end portion of a stem (18) that is adapted to be inserted axially in said spindle (13) through the back-side end portion of the latter, so as to enable said milling cutter to be fastened to said end portion of the same spindle. The milling cutter 25 (14) is adapted to be brought into contact with a reference plane on the jaw (9) so as to directly and readily achieve a correct setting and adjustment of the milling cutter (14) itself in the operating position thereof.