Abstract:
A sealed collet having improved radial flexibility is provided for facilitating removal from a locknut of a chuck assembly. The sealed collet includes a collet body formed from a tubular configuration of elongated gripping fingers separated by elongated slots which render the body radially resilient in response to pressure applied by a locknut. The slots are filled with a bonding agent, which may be a silicon rubber compound, for preventing dirt and debris from entering the collet slots and for preventing pressurized coolant intended to flow through a bore in a tool shank from flowing through the walls of the collet body. To increase the radial compressibility of the collet, agent-free gaps are provided in the slots immediately behind a distal portion of the collet body. In the preferred embodiment, the length of the agent-free gap is between 20 % and 30 % of the overall length of its respective slot. The location of the gaps immediately behind the distal end of the collet body advantageously increases the radial compressibility of the collet while allowing the bonding agent in the slots to continue to prevent debris from entering the collet.
Abstract:
The invention relates to a tool carrier with a coupling end (2) arranged on the tool machine side and a tool holder (9) arranged on the tool side, a surface (16) with a radial projection being provided internally in the coupling end of the tool machine side, which surface is machineable through the opening of the coupling end of the tool machine side. In said surface (16) is/are provided one or several borings (15) for a static and dynamic balancing of the tool machine side coupling end (2) of the tool carrier. Inter alia, this can provide both a static and a dynamic balancing.
Abstract:
A double-ended drill bit (50) having opposed cutting ends (52, 54) of different structural configurations is provided in combination with a sleeve or holder (10) to be received within a drill chuck. The sleeve is provided with a cylindrical body (14) having a top end with a pair of helically-shaped longitudinally extending members (16, 18) in spaced mating relation attached thereto. One cutting end of a drill bit is received within the cylindrical body and the spaced helically-shaped members.
Abstract:
A removable nosepiece (100, 200, 300) for a chuck (20, 20') or other similar tool holder has an outer ring (110, 210, 310) of relatively hard and inflexible material such as plastic and/or metal and an inner ring (120, 220, 320) of relatively soft and flexible material such as rubber. The outer ring releasably holds the nosepiece on the distal end of the chuck or other tool holder. A tool is inserted into the chuck or tool holder through a central aperture in the inner ring. The inner ring engages the sides of the tool to help keep dust and debris out of the chuck or tool holder. The nosepiece can be removed and replaced when it becomes worn (e.g., when the inner ring is no longer functional).
Abstract:
A tool chuck (10) is provided for rotary power tools that includes a dust seal (20) for reducing the quantity of dust and cuttings entering the chuck (10) mecanism. The tool chuck (10) features an endcap (19) affixed to the chuck body (15) and a circular brush (20) may be either permanently or removably engaged to the endcap (19). The circular brush (20) comprises a multiplicity of either metallic or plastic bristles (28) that contact the shank of a tool bit engaged in the tool chuck (10).
Abstract:
In order to optimize the operation of a rotary shaping machine-tool for workpieces clamped in a motor-driven chuck (5), the workpiece discharge channel (14) arranged in the chuck (5) and a motor drive are provided so that the chuck stops when the workpiece discharge channel (14) is in a downwards oriented vertical position.