23results about "Boring bars" patented technology

This utility model discloses a roughing turning double-ended tool holder, relating to the field of machining tool technology. It includes a tool holder body, with a tool head fixedly connected to its front end. A coarse cutting edge and a finish cutting edge are disposed at the end of the tool head furthest from the tool holder body. The vertical distance 'a' from the cutting edge of the coarse cutting edge to the central axis of the tool head is less than the vertical distance 'b' from the cutting edge of the finish cutting edge to the central axis of the tool head. During use, this utility model reduces the number of tool changes, lowers on-site production costs, and reduces efficiency by eliminating the need for two tool holders in the traditional two-tool-holder machining process. It solves the problem of frequent tool holder changes that are necessary for machining the center hole of a workpiece on existing lathes. While two tool holders are typically used—one for roughing and the other for finishing—to ensure the inner diameter of the center hole meets requirements and is relatively smooth, frequent tool holder changes significantly increase the workload for operators and reduce lathe machining efficiency.

Provided is a cutting tool excellent in chip dischargeability and excellent in durability. A cutting tool based on one aspect of the present disclosure comprises a body section and a first cutting part and a second cutting part fixed to the body section. The body section includes a trunk part positioned on a rear end side, and a branch part extending toward a tip end from the trunk part. The branch part includes: a first branch part extending rearward in a rotation direction toward the tip end and connected to the trunk part and the first cutting part; a second branch part extending frontward in the rotation direction toward the tip end and connected to the trunk part and the first cutting part; a third branch part extending rearward in the rotation direction toward the tip end and connected to the trunk part and the second cutting part; and a fourth branch part extending frontward in the rotation direction toward the tip end and connected to the trunk part and the second cutting part. The second branch part and the third branch part intersect and are connected at the intersecting sites.

This invention discloses a tool holder, comprising: a tool holder body; an internal cooling channel formed inside the tool holder body for guiding coolant to a vicinity of a receiving tank for heat exchange; the internal cooling channel having an inlet and an outlet; an external cooling channel formed on an assembly; at least one spray hole of the external cooling channel being located in the receiving tank; and a liquid path switching component having a transfer channel for connecting the external cooling channel and the internal cooling channel; wherein, the assembly drives the liquid path switching component to rotate, thereby connecting or misaligning the two openings of the transfer channel with the external cooling channel and the internal cooling channel respectively, and ensuring that the spray hole is connected in the receiving tank in the connected state or only the internal cooling channel is connected in the misaligned state; the tool structure provided by this invention solves the problem that existing tools can only be cooled by external coolant and cannot adapt to different working conditions by selecting internal cooling or internal and external cooling methods for machining.

The present invention provides a cutting tool that exhibits excellent discharging of chips. A cutting tool according to one aspect of the present disclosure has a body section, and a first cutting section that is fixed to the body section. The body section has a trunk section that is positioned toward a rear end, and a branch section that extends from the trunk section toward a tip end. The branch section has a first branch section that extends rearward in the rotation direction of a rotary axis toward the tip end, and a second branch section that extends forward in the rotation direction of the rotary axis toward the tip end. The first cutting section is fixed to the body section at a portion where the first branch section and the second branch section intersect.

A toolbar with a longitudinal axis and a machining tool for machining a workpiece, the toolbar comprising at least one accelerometer configured to generate an electric signal proportional to the velocity of the toolbar along a direction; at least one piezoelectric actuator; and a control logic unit, operatively connected to the at least one accelerometer and to the at least one piezoelectric actuator, wherein control logic unit is configured to drive the at least one piezoelectric actuator by a driving signal proportional to the velocity derived from at least one accelerometer adapted to compensate the torque and the vibrations on the toolbar.

The utility model relates to the technical field of superhard cutting tools, and discloses a PCBN tool assembly which comprises a boring tool bar and a boring tool handle detachably installed at the bottom end of the boring tool bar, an installation base is installed at one end of the boring tool bar, a tool body is installed in the installation base, an installation mechanism is arranged in the tool body, and the installation mechanism is connected with the boring tool bar. According to the utility model, the mounting mechanisms are arranged, the mounting mechanisms are matched with each other, and an axial and circumferential double-locking structure is adopted, so that the clamping stability of the tool main body can be obviously improved, and the loosening caused by cutting vibration is avoided; the boring machining precision and the cutting safety are guaranteed, the double locking is matched with the transmission self-locking structure, the cutter body is effectively prevented from moving and deflecting, the connection rigidity is improved, heavy-load intermittent cutting is adapted, and the service life of the PCBN cutter is prolonged.

The present invention discloses a boring tool apparatus that comprises a head, stem and tool connector. The tool connector may be connected to the stem on one end and to a hand held power tool on the other end. Alternatively, the apparatus may comprise a stem tail to attach the tool connector to a hand held power tool. The tool connector may be placed in the stem tail such that the stem end of the tool connector is held securely in the stem tail by means of a cap and the power tool end of the tool connector is exposed outside the stem tail to connect to a hand held power tool. The apparatus may also comprise attachment for wire, sleeve, pipe, or cable to ride with it as a bore is created. Also disclosed herein is the method of boring a hole using the apparatus of the present invention.

This application discloses a boring bar for boring a top pivot support, belonging to the field of boring bars. It includes a boring bar body, a tool holder fixedly mounted at the bottom of the boring bar body, a keyway at the top of the boring bar body, a through groove on the inner wall of the tool holder, a notch on the outer edge of the tool holder, two threaded holes communicating with the notch on the inner wall of the notch, a square groove on the inner wall of the tool holder, one end of a return spring fixedly connected to the inner wall of the square groove, and a moving block fixedly connected to the other end of the return spring. By setting the boring bar body, tool holder, keyway, and through groove, a tool holder fixedly mounted inside the through groove can be fitted to form a dedicated boring bar. Using a boring machine for boring significantly improves processing efficiency, ensures a smooth boring area, guarantees processing accuracy, and avoids the vibration phenomenon that easily occurs during boring when the finished tool holder is too thin.

A rotary cutting tool includes a support structure having a central hub located at an axially rearward end of the rotary cutting tool. A plurality of primary support members extends from the central hub in different axial and radial directions in three-dimensional space with respect to a central, rotational axis of the rotary cutting tool. The support structure may include one or more secondary support members extending from a primary support member in different axial and radial directions in three-dimensional space, and one or more tertiary support members to increase stiffness of the support structure. The central hub extends in a plane that is substantially perpendicular to the central, rotational axis of the rotary cutting tool. In one embodiment, each of the plurality of primary support members have a different physical dimension.

A portable drilling machine comprises: a machine body (2); a rotating assembly provided with a coupling ring (31) rotating about the axis of rotation (X) and configured to allow rotation about the axis of rotation (X) in an integral coupling with the tool support shaft (S); a propulsion assembly provided with a bracket (41) movable parallel to the axis of rotation (X), the bracket comprising means (42) for fixing to the tool support shaft (S), the means being configured such that the shaft (S) can rotate about the axis of rotation (X) and such that translation along the axis of rotation (X) is constrained to the shaft (S). The machine coupling assembly (5) is provided with a radial locking system having a removable body to allow the machine to be secured to the support (A) by means of radial insertion, in addition to conventional axial insertion. The bracket (41), the coupling ring (31), and the insertion member (5) protrude to the outside of the body (2) transversely to the rotation axis (X).

This utility model provides a shock absorber processing equipment, including an operating table, an adjusting clamping mechanism, and multiple fixed clamping mechanisms. A boring machine is mounted on the operating table for machining the cylinder body. The fixed clamping mechanisms are arranged around the cylinder body on the operating table and are used to clamp it. The adjusting clamping mechanism includes a mounting plate and multiple flexible clamping members. The mounting plate is mounted on the operating table and has a through hole in its center through which the boring bar of the boring machine passes. The multiple flexible clamping members are arranged around the through hole on the mounting plate. The clamping end of each flexible clamping member is used to clamp or move away from the outer wall of the boring bar. The advantage of this utility model is that, through the combined action of the fixed clamping mechanism and the adjusting clamping mechanism, the cylinder body receives comprehensive and stable support during processing. This helps reduce processing errors caused by cylinder body swaying or vibration, thereby improving processing accuracy to meet the processing requirements of various shock absorbers.

The present application belongs to the technical field of boring tool arm structure, and particularly relates to a boring tool arm structure capable of absorbing vibration impact, comprising a rotary support assembly, a swing clutch assembly, a retraction locking assembly, a driving assembly and a boring tool assembly, wherein the rotary support assembly is arranged on the driving assembly, the swing clutch assembly is slidingly arranged in the rotary support assembly, the retraction locking assembly is symmetrically arranged between the rotary support assembly and the swing clutch assembly, and the boring tool assembly is arranged at the end of the swing clutch assembly. The present application designs a buffering mechanism to replace an integrated tool bar. When the radial load is too large, the swing mechanism can absorb the vibration and move away from the workpiece. In addition, the present application proposes the swing clutch assembly. When the tool bar is deflected, the clutch structure can cut off the power transmission between the tool bar and the motor, which can significantly reduce the safety hazards and leave sufficient operation time for shutdown and manual reset.

A portable boring machine that includes a machine body, a rotation assembly, provided with a coupling ring rotating about the rotation axis and configured to allow an integral coupling in rotation about the rotation axis with a tool-bearing shaft, an advancement assembly, provided with a carriage-movable parallel to the rotation axis, which has fixing means for fixing to the tool-bearing shaft, structured so as to enable the rotation of the shaft about the rotation axis and to be constrained to the shaft relative to the translation along the rotation axis, and a machine coupling assembly provided with a radial locking system with a removable body, to allow the machine to be fixed to the support by means of a radial insertion in addition to the traditional axial insertion. The carriage, the coupling ring and the insertion part project outside the machine body transversely to the rotation axis.

The application relates to the technical field of mechanical processing equipment, in particular to an internal cooling type damping boring bar with a built-in MRE controllable resonant vibration absorber. The internal cooling type damping boring bar comprises a boring bar body used for supporting a tool head after position assembly, a cavity is formed in the axial interior of one end of the boring bar body, a sealing cover is screw-connected to the inner side of the cavity at the end of the boring bar body, an excitation coil is arranged in the interior of the cavity away from the sealing cover and the interior of the sealing cover respectively, a support is arranged at the two ends of the inner side of the cavity respectively, and a mass block is arranged at the central position of the cavity and connected through the support. The internal cooling type damping boring bar with the built-in MRE controllable resonant vibration absorber can realize adjustable resonant vibration through active magnetic field control, the internal cooling channel can simultaneously take away the heating of the excitation coil and the cutting heat, the mechanical performance of the magnetorheological elastomer is ensured to be stable, the machining chatter can be effectively inhibited, and the machining precision and stability of large-length-diameter-ratio deep hole boring can be obviously improved.

A portable boring machine, comprising: a machine body (2); a rotation assembly, provided with a coupling ring (31) rotating about the rotation axis (X) and configured to allow an integral coupling in rotation about the rotation axis (X) with a tool-bearing shaft (S); an advancement assembly, provided with a carriage (41) movable parallel to the rotation axis (X), which comprises fixing means (42) for fixing to the tool-bearing shaft (S), structured so as to enable the rotation of the shaft (S) about the rotation axis (X) and to be constrained to the shaft (S) relative to the translation along the rotation axis (X). a machine coupling assembly (5) provided with a radial locking system with a removable body, to allow the machine to be fixed to the support (A) by means of a radial insertion in addition to the traditional axial insertion. The carriage (41), the coupling ring (31) and the insertion part (5) project outside the machine body (2) transversely to the rotation axis (X).

The present invention relates to a boring bar (1000) with active dampening means (101) for lessening vibration in a machine tool, a head (102), a main body (100) of the bar (1000), a central area (21) and a peripheral area (22) of the bar (1000). The dampening means (101) comprise at least one electromagnetic effect actuator (1) with at least one casing (11) enclosing a respective cavity (12), at least one inertial mass (3), arranged in the cavity (12) which is movable with respect to the casing (11) of the actuator (1) due to the effect of an electromagnetic field. The actuator (1) is located in a respective housing (23), conjugate to the casing (11), in the peripheral area (22) of the bar (1000). The dampening means (101) comprise a set of coils (4) and permanent magnets (5), configured to act on the same plane perpendicular to the longitudinal direction.

An elongated tool holder includes a tool anti-vibration component having a mass housing portion and an anti-vibration arrangement. The anti-vibration arrangement includes a closed interior holder cavity formed in the mass housing portion. The anti-vibration arrangement also includes a vibration absorbing mass that is disposed within the holder cavity and resiliently suspended therein by at least three contact inwardly facing cavity wall surface elastically resilient suspension members of non-toroidal shape. A cutting tool is provided with the tool holder.

The present invention provides a cutting tool that exhibits excellent discharging of chips. A cutting tool according to one aspect of the present disclosure has a body section, and a first cutting section that is fixed to the body section. The body section has a trunk section that is positioned toward a rear end, and a branch section that extends from the trunk section toward a tip end. The first cutting section has a first rear surface that is positioned rearward in the rotation direction of a rotary axis, and a first inner side surface that faces the rotary axis. The branch section has a first branch section that is connected to the trunk section and the first rear surface, and a second branch section that is connected to the trunk section and the first inner side surface.

This invention relates to the field of metal machining equipment technology, and more particularly to a magnetorheological fluid vibration-damping boring bar with an internal cooling structure. It includes: a cutting head with a cutting edge at its working end; a boring bar body located at one end of the cutting head, with a cavity formed inside the boring bar body near the cutting head end; an isolation sleeve located inside the cavity away from the cutting head end, used to divide the cavity into an inner and outer ring layer; and an end-capsulation component assembly installed inside the cavity and at the isolation sleeve near the cutting head end. This invention provides a magnetorheological fluid vibration-damping boring bar with an internal cooling structure. The internal cooling structure removes heat generated by the excitation coil, effectively reducing the temperature of the boring bar body, ensuring the stability of the mechanical properties of the magnetorheological fluid, significantly enhancing the vibration resistance of large aspect ratio boring bars in deep hole cutting operations, and effectively improving machining accuracy and cutting process stability.

The present application relates to the technical field of magnetic machining equipment, and particularly relates to a magnetorheological elastomer variable stiffness component independent regulation type damping boring bar, which comprises a boring bar body, an accommodating cavity is formed in the axial interior of one end of the boring bar body, an outer ring positioning protective layer is uniformly arranged on the inner side of the accommodating cavity, an inner ring positioning cylinder is assembled at the center position of the inner side of the accommodating cavity, a plurality of annular grooves are uniformly formed on the outer side of the inner ring positioning cylinder, and a plurality of groups of adjustable stiffness components are installed between the outer ring positioning protective layer and the inner ring positioning cylinder. The magnetorheological elastomer variable stiffness component independent regulation type damping boring bar provided by the present application can directly take away the heat generated by the operation of the excitation coil by using the cutting fluid flowing in the internal cooling channel of the boring bar, effectively inhibits the adverse effects of temperature rise on the performance of the magnetorheological elastomer, stabilizes the mechanical properties of the magnetorheological elastomer in the shear mode, and ensures that the damping system can always work reliably in long-time continuous machining.

This utility model discloses a high coaxiality boring bar, including a boring bar body, a clamping block, a tool holder, and a locking screw. Several tool holders are detachably mounted on the boring bar body, and the tool holders are locked to the boring bar body by the clamping block and the locking screw. This utility model utilizes the coaxial machining of tools rotating along the same shaft system. The tool holders are detachably mounted on the boring bar body. When boring holes of different diameters are required, the tool holders can be disassembled and reassembled using the clamping block and locking screw, and different lengths of tool holders can be replaced to adjust the rotation diameter. It has the advantages of simple manufacturing process, no special operation requirements, and good applicability and scalability.

The present application relates to magnetic mechanical processing equipment technical field, especially to a built-in adjustable stiffness magnetorheological elastomer vibration absorption type damping boring bar, comprising: a tool bar body for supporting the position of a tool head after assembly, a sealed cavity is formed in the axial interior of one end of the tool bar body; a tool head packaging assembly installed at the end of the tool bar body; a damping assembly installed inside the sealed cavity of the tool bar body. The built-in adjustable stiffness magnetorheological elastomer vibration absorption type damping boring bar provided by the present application integrates the variable stiffness damping assembly in the internal cavity of the boring bar body, maintains the integrity and regularity of the boring bar outer diameter, has reasonable space layout, realizes interference-free deep hole machining, ensures that the damping device does not interfere with the inner wall of the workpiece during operation, thereby effectively suppressing the chatter of the large length-diameter ratio boring bar without limiting the machining depth, and significantly improving the size accuracy and surface roughness of deep hole machining.