Abstract: The present invention relates to a housing clamp for a power tool housing, such as a drill, router, grinder, impact wrench, ratchet wrench, screwdriver, or other powered tool. The housing clamp includes a circumferential flange and recess that extends at an angle. When the housing clamp is installed, the housing clamp couples two portions of a power tool housing together. As the housing clamp is tightened onto the housing portions, the flange loads the housing with even pressure around its circumference providing a clamping load. The housing clamp provides even pressure around a large area at a working end of the tool, allowing the tool to be thinner in a dimensionally critical area.

Abstract: Provided is a lathe capable of elongating the life of a shifter mechanism. A lathe comprises a spindle, a chucking unit, a power transmitting unit, a shifter, a claw, and a driving unit. The shape of an outer circumference of the shifter in a contact range and a first end of the claw in longitudinal section along the spindle axis is such shape as the acceleration “a” of the first end in the diameter direction with respect to the moving distance of the shifter moving in the direction of the spindle axis (Z-axis direction) at a constant speed is continuous both in a positive range and in a negative range where the contact range is a range of the outer circumference of the shifter in contact with the first end of the claw.

Abstract: A dental drill bit is configured to drill a particularly shaped opening in a human jawbone. The dental drill bit includes first, second, and third portions. The first portion includes a bullet-shaped contour formed by revolving a curve about an axis creating an apex and a bottom, and is so shaped to correspond to a bullet-shaped portion of a dental implant. The second portion includes a hemisphere frustum formed coaxial with the axis of the bullet-shaped contour, and extends from the bottom of the bullet-shaped contour, and corresponds to a portion of an abutment that is supported by the implant. The first and second portions may also each include flutes for cutting/drilling into bone. The third portion includes a shaft that extends from a bottom of the hemisphere frustum and is formed co-axial with the axis of the bullet-shaped contour, and is configured to be secured within a dental drill.

Abstract: A balancing or measuring device includes a main body which is rotatable about an axis and includes an opening for accommodating a coupling shaft of a component to be balanced or measured, and having a centering element which can be axially displaced within the main body against a spring arrangement to center the component in the main body. In order to ensure maximum concentricity also in a balancing or measuring device having a small number of parts, the spring arrangement is designed to be integral with the centering element.

Abstract: The invention provides a clamping system (1) for a rotary tool (70), for example a milling cutter or drill. The clamping system (1) includes a base element (10), a collet (30) and a clamping nut (50), said clamping nut (50) friction-locking the rotary tool (70) within the base element (10) with the collet (30). In order to avoid a relative rotation of the base element (10) and the collet (30), the clamping system (1) has a form locking anti-twist protection which blocks a rotation of the collet (30) relative to the base element (10).

Abstract: The invention relates to a clamping device which comprises a base, having a center holding fixture for a structural component to be clamped and a plurality of cavities arranged around the holding fixture. The base can be elastically deformed in such a manner by radial compressive forces applied from the outside in the area of the cavities that a structural component to be clamped can be inserted in the holding fixture and can be elastically returned to its former shape by reducing or releasing the radial forces, thereby establishing a pressure connection with the structural component to be clamped. The invention is characterized in that centrifugal counterweights are provided inside the cavities.

Abstract: The invention relates to a clamping device with a base body (2) which comprises a central receptacle (5) for a component or tool to be clamped, in the base body (2) at least one groove (6) being formed which is open to a face side of the base body (2), and with at least one clamping wedge (9b) which can be pressed axially into the groove (6) from the open face side of the latter to radially deform an inner wall section (7) lying between the groove (6) and the receptacle, which is characterized in that the wall (10) which defines the groove (6) on the outside is designed to be elastic over at least an axial partial section such that it is elastically deformed to the outside when the at least one clamping wedge (9b) is pressed into the groove (6).

Abstract: To compensate for tolerances and diameter differences during the chucking of a tool shank (15) in a tool holder (1) of the shrink-fit chuck type, a diameter-compensating bush (17) is provided. The diameter-compensating bush (17) has an outer sleeve (19) having a tapered inner circumferential surface (25) and an inner sleeve (21) arranged coaxially therein and having a tapered outer circumferential surface (27). Once the diameter-compensating bush (17) has been put onto the tool shank (15) and the inner sleeve (21) has been drawn into the outer sleeve (19), for example by means of a ring nut (35), for the diameter compensation, the outer sleeve (19) is thermally shrunk in place in the locating section (9) of the tool holder (1). In this way, rotary tools whose tool shank (15) does not have a diameter corresponding to the diameter or the tolerance requirements of the tool holder (1) can be chucked in a tool holder (1), for example, of the shrink-fit chuck type.

Abstract: A retaining assembly includes a body and a retainer. The body includes a compartment defined in an end thereof. The compartment is defined by a perimeter wall and an end wall. A coupling hole is defined in the end wall for receiving a tool. The retainer is mounted in the compartment of the body and has a through-hole aligned with the coupling hole of the body. The retainer further includes at least one resilient positioning portion abutting against the perimeter wall of the body for retaining the retainer in the compartment of the body. The retainer further includes at least one resilient clamping portion extending into the coupling hole of the body for pressing against at least one face of the tool received in the coupling hole of the body.

Abstract: A hard carbon film (15) is formed directly or through an intermediate layer for enhancing adhesion over an inner surface (11b) of a guide bush (11) for holding a workpiece (51) rotatably and axially slidable on an automatic lathe at a position near a cutting tool, to be in sliding contact with the workpiece (51) or directly or through an intermediate layer for enhancing adhesion on the surface of a superhard lining fixed to the inner surface (11b) The guide bush (11) has remarkably enhanced durability and prevents damaging the workpiece (51) and seizing that makes a machining operation impossible even when the guide bush (11) is used for an extended period of time and when the automatic lathe operates for heavy machining.

Abstract: The invention provides a guide bush wherein a cemented carbide alloy containing at least cobalt is provided on an inner surface thereof for holding a workpiece rotatably and slidably in the longitudinal axial direction thereof in close proximity of a cutting tool, and a DLC film is formed over the cemented carbide alloy, cobalt being removed from the surface of the cemented carbide alloy, adjoining the DLC film. By forming the DLC film 15 on the surface of the cemented carbide alloy 12 from which cobalt has been removed, with an intermediate layer formed therebetween, adhesiveness of the DLC film against the cemented carbide alloy fixedly attached to the inner surface of the guide bush is further enhanced.