Abstract

The invention relates to a clamping device with a housing (2), a spindle (3), an elastic annular clamping element (4), and a disc brake (5) which is non-rotatably connected to the spindle (3). The spindle (3) and the housing (2) can be rotated relative to each other, and the clamping element (4) extends substantially perpendicular to the axis of the spindle (3) and can be brought out of a first position into a second position by applying a force (F1). The spindle (3) is clamped in one of the two positions and can be rotated in the other position. High clamping forces or holding torques can be achieved using the clamping device according to the invention with a simple structural design in that the clamping element (4) has an outer portion (6), an inner portion (7), and a clamping portion (8), said outer portion (6) and clamping portion (8) being arranged on opposite faces of the clamping element (4). A support element (9) which is connected to the housing (2) is provided, said support element being arranged opposite the outer portion (6) of the clamping element (4). The disc brake (5) is arranged on the clamping element (4) side opposite the support element (9) and has a counter clamping portion (10) which is arranged opposite the clamping portion (8) of the clamping element (4). The force (F1) directed in a substantially axial manner acts on the inner portion (7) of the clamping element (4). The outer portion (6) of the clamping element (4) rests against the support element (9), and the clamping portion (8) of clamping element (4) rests against the counter clamping portion (10) of the disc brake (5) in the clamped position of the spindle (3), whereas at least the clamping portion (8) of the clamping element (4) does not rest against the counter clamping portion (10) of the disc brake (5) in the non-clamped position of the spindle (3).

IPC Classes  ?

• B23Q 16/10 - Rotary indexing
• F16D 55/00 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes

Abstract

The invention relates to a clamping device comprising a housing (2), a spindle (3), an elastic clamping element (4) and a brake disk (5), the spindle (3) and the housing (2) being rotatable relative to each other, the clamping element (4) being non-rotatably connected to the housing (2) and the brake disk (5) being non-rotatably connected to the spindle (3), the clamping element (4) being movable by applying a force (F) from a first position, in which the spindle (3) can be rotated, into a second position, in which the spindle (3) is clamped by the clamping element (4). The clamping device as per the invention enables high clamping forces and/or high holding torque to be achieved in a simple constructive design by providing the clamping element (4) with a membrane (6) and with an external cylinder (7) that runs parallel to the spindle (3), the membrane (6) and the external cylinder (7) being arranged towards each other at an angle ß of 90o ± α, and an opening (8) that surrounds the spindle (3) at a radial distance being disposed in the centre of the membrane (6); by providing the external cylinder (7) with a clamping section (9) and providing the brake disk (5) with a counter clamping section (10) arranged coaxially thereto, a radial gap (11) being present in the first position of the clamping element (4) between the clamping section (9) of the external cylinder (7) and the counter clamping section (10) of the brake disk (5); and by rendering the angle ß between the membrane (6) and the external cylinder (7) changeable by applying an essentially axially directed force (F) to the membrane (6), a change in the angle ß resulting in a change in the distance of the clamping section (9) of the external cylinder (7) to the counter clamping section (10) of the disk brake (5) such that, as a result of applying a force to the membrane (6), the spindle (3) is clamped by the clamping element (4) or the spindle (3) is unclamped.

IPC Classes  ?

• B23Q 16/10 - Rotary indexing
• F16D 49/00 - Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
• F16D 125/12 - Membrane or diaphragm types
• F16D 125/68 - Lever-link mechanisms, e.g. toggles with change of force ratio
• F16D 121/02 - Fluid pressure

Goods & Services

MACHINES AND MACHINE TOOLS FOR THE CUTTING AND FORMING OF MATERIALS, NAMELY, ROTARY TABLES, INDEXING TABLES, TRUNNION TABLES, ROTARY-TILT TABLES, DIRECT DRIVE TABLES, SHUTTLE TABLES, NUMERICAL CONTROL ROTARY TABLES, NUMERICAL CONTROL SPINDLE POSITIONERS, HIRTH COUPLINGS, TOOL CHANGERS; PLANETARY SYSTEMS FOR WORKPIECE TRANSPORT AND POSITIONING CONSISTING OF A CARRIER INDEXING TABLE WITH A DIVISIONAL PITCH CONSISTENT WITH THE NUMBER OF PLANETS, PLANETS FOR THE POSITIONING OF WORKPIECES UNDER THE WORK SPINDLES MOUNTED ON A CARRIER TABLE DIAL PLATE, PLANETS OF IDENTICAL DESIGN LOCATED AT EACH DIVISIONAL PITCH LOCATION AND CAPABLE OF OPERATING INDEPENDENTLY, WHEREIN THE PLANETS ARE CAPABLE OF OPERATING DURING A CARRIER TABLE INDEXING MOTION, AND A CENTRAL MANIFOLD FOR SUPPLYING MEDIA FOR POWER TRANSMISSION TO EACH PLANET AND WORKPIECE FIXTURE; SATELLITE SYSTEMS FOR WORKPIECE TRANSPORT AND POSITIONING CONSISTING OF A CARRIER INDEXING TABLE WITH A DIVISIONAL PITCH CONSISTENT WITH THE NUMBER OF WORK STATIONS, LOADING AND UNLOADING STATIONS, FIXTURES FOR CHUCKING AND MANIPULATING WORKPIECES MOUNTED ON THE CARRIER TABLE DIAL PLATE AND UNDER THE WORK SPINDLES, STATIONARY SATELLITE DRIVERS ENGAGING WITH THE FIXTURES MOUNTED ON THE CARRIER TABLE DIAL PLATE FOR MANIPULATING THE WORKPIECE UNDER THE WORK SPINDLE, WHEREIN SATELLITES ARE NOT REQUIRED AT ALL WORK STATIONS OR AT THE LOAD AND UNLOAD STATIONS, WHEREIN SATELLITES ARE NOT REQUIRED TO BE OF AN IDENTICAL DESIGN, WHEREIN SATELLITE FIXTURES CANNOT MANIPULATE THE WORKPIECE DURING THE CARRIER TABLE INDEXING MOTION, WHEREIN A CENTRAL MANIFOLD TO THE SUPPLY MEDIA FOR POWER TRANSMISSION TO EACH SATELLITE DRIVER IS NOT REQUIRED, AS THE SATELLITE DRIVERS ARE STATIONARY

Goods & Services

Motors and engines (except motors for land vehicles); machines and machine tools as well as their parts included in this class, particularly drill chucks (machine parts), drill fixtures, dividing heads, machine tables, chucks, tool holders, hydraulic components for machines, equipment for the processing of work pieces, namely quick clamp drill fixtures, rotary tables, slides, trunnion tables, two-axis rotary tilt units, indexing tables, hydraulic clamp elements and fixtures, hydraulic pumps, mechanical grooving tools, floating plates, air operated and mechanical double disk grinders, mechanically driven tools for machines, face gears, (toothed) racks, boring bars, cutters and reamer rods. Hand tools and equipment (hand operated) as well as their parts included in this class, particularly tools, fixtures for metal cutting, namely tools for drilling, turning, milling, shaping as well as high speed steel and carbide tipped boring bars, cutters and reamer rods, quick clamp drill fixtures, high precision turn off tools, grooving tools. Measuring, signalling, regulating apparatus and instruments, particularly measuring tools.

Goods & Services

(1) Motors for machines (electric); engines not for land vehicles; machines and machine tools and parts (hydraulic and non-hydraulic) therefore, namely, drill chucks, drill fixtures, dividing heads, machine tables, chucks, equipment for the processing of work pieces, namely, quick clampdrill fixtures, rotary tables, slide tables, reversible clamps, two-axis swivelling tables, indexing tables, hydraulic clamps (metal and non-metal) and parts therefor, hydraulic pumps, floating plates and mechanical double disk grinders, mechanically driven tools for machines, face gears, racks, boring bars, cutters and reamer rods; Power tools and parts therefore, namely, tools for metal cutting, drilling, turning, milling, shaping, boring, reamers, cutters, face gears, quick clampdrill fixtures, trunnion tables, high precision (boring) tools, rotary tables, indexing tables, slide tables, turn tables. (2) Hand tools, namely, tools for metal cutting, drilling, turning, milling, shaping, boring, reamers, cutters, and grooving tools. (3) Diagnostic devices for the measuring, signalling and inspection for tool manufacture, construction and production of vehicles and mechanical engineering. (4) Tool racks for use with machines and machine tools; Tool racks for use with hand and power tools, namely, tools for metal cutting, drilling, turning, milling, shaping, boring, reamers, cutters.

Goods & Services

Engines not for land vehicles; machine tools, namely, chucks for power drills; machine tool holders; hydraulic components for machines, namely, hydraulic cylinders, hydraulic clamps, hydraulic pumps for automating machines; metal clamps used for holding piece parts on machine tool tables; power tools, namely, reamer rods; boring machines and bars therefor; transmission face gears for machines; air operated power tools, namely, double disk grinders; mechanically operated grooving tools; rotary table welding machines; machine parts, namely, linear motion slides for use in facilitating and guiding linear motion in machining applications; two axis rotary tilt machines for swiveling work pieces; grinding and drilling accessories, namely, dividing heads, toothed racks [ Hand tools and manually operated hand tools, namely, drills, quick clamp drills, milling cutters, and reamer rods; manually operated hand tools for grooving, turning, and shaping, namely, high speed steel and carbide tipped boring bars for use in processing work pieces ] [ Diagnostic devices for measuring, signaling and inspection for use in tool manufacture, construction and production of vehicles and mechanical engineering ]

Goods & Services

Motors and engines (except motors for land vehicles); Machines and machine tools as well as their parts as far as included in class 07 - particularly drill chucks (machine parts), drill fixtures, dividing heads, machine tables, chucks, tool holders, hydraulic components for machines, equipment for the processing of work pieces, specifically quick clamp - drill fixtures, rotary tables, slides, trunnion tables, two-axis rotary tilt units, indexing tables, hydraulic clamp elements and fixtures, hydraulic pumps, mechanical grooving tools, floating plates air operated and mechanical double disk grinders, mechanically driven tools for machines, face gears, racks, boring bars, cutters and reamer rods. Hand tools and equipment (hand operated) as well as their parts as far as included in class 08 - particularly tools, fixtures for metal cutting, specifically tools for drilling, turning, milling, shaping as well as high speed steel and carbide tipped boring bars, cutters and reamer rods, face gears, quick clamp - drill fixtures, trunnion tables, high precision turn off tools, grooving tools, rotary tables, indexing tables, turn tables. Measuring, signalling, checking (supervision) and inspection apparatus and instruments - particularly measuring tools.