240results about "Boring bars" patented technology

The present invention relates to an active damper (1) for vibration attenuation in a boring bar (100) comprising an actuator (101) with electromagnets (4) attached to a body (2) thereof, and an inertial mass (3) in a cavity (12) of the actuator (101) movable in directions perpendicular to the longitudinal direction of the actuator (101); comprising an acceleration sensor (5) in the actuator (101) and control means (9) of currents of the electromagnets (4) depending on the measurements of the acceleration sensor (5).

A boring bar (2) of a non-rotating boring tool, comprising: an elongate body (6) which is configured to be attached to a support structure of a metal cutting machine and is arranged to carry a tool part (4) provided with a cutting element (5); and at least two electrically controlled vibration actuators (16) for active vibration damping of the boring bar (2), each actuator comprising a damping mass (16a) arranged in a movable manner, and each actuator being configured to generate a vibration force parallel to the working axis (17) of the actuator, the working axis of the actuator being perpendicular to the central axis (15) of the damping mass, wherein each actuator is a single-axis actuator having a single working axis, and wherein the actuators are arranged such that their working axes are angularly offset from each other. The actuators (16) are arranged in a longitudinal series in the elongate body (6), wherein the central axis (15) of the damping mass (16a) of each actuator coincides with the longitudinal axis (7) of the elongate body.

The invention discloses a vibration reduction bionic boring bar based on hedgehog thorns and biological eggshells, and relates to the technical field of boring bars, the vibration reduction bionic boring bar comprises a boring bar body, a cavity is formed in the boring bar body, the bionic eggshells which are transversely distributed at equal intervals are fixed in the cavity, and longitudinal reinforcing ribs are fixed in the bionic eggshells; the first transverse reinforcing rib, the second transverse reinforcing rib, the third transverse reinforcing rib and the longitudinal reinforcing rib which are designed based on hedgehog thorn bionics are fixed in the boring bar body, so that buckling and damage of the boring bar body are delayed, and the boring bar has an excellent external force resisting effect; the bionic eggshell which is designed in a bionic mode based on the thin shell structure of the biological eggshell is fixed in the boring rod body, so that stress distribution in the boring rod body is more uniform, the stress concentration effect is smaller, the mechanical efficiency is improved, and compared with an existing common solid boring rod, the effects of improving rigidity and reducing vibration are achieved; the vibration problem of the boring rod can be effectively solved, and the boring machining precision and machining efficiency are guaranteed.

The present invention can realize better cutting performance while suppressing an influence of, for instance, deflection of a head and an increase in a moment acting on a fastening mechanism even when a cutting insert of a long total length is used. A shank of a head replaceable type cutting tool includes: a fastening mechanism that is formed at a leading end part in a longitudinal direction of the shank, and attaches a head; and a recessed part that is formed at the leading end part so as to accommodate a part of a cutting insert held by the head and avoid an interference with the cutting insert. The recessed part may be provided to accommodate a non-use part of the cutting insert held by the head in a state where the head is attached to the leading end part, and avoid an interference with the cutting insert.

The invention discloses a vibration reduction boring rod with a self-adaptive aperture supporting rod, and belongs to the technical field of machining. Comprising a boring rod body and a supporting rod, a cavity is formed in the position, close to a tool bit, of the boring rod body, four symmetrical grooves communicated with the cavity are formed in the cavity in the circumferential direction, the grooves and the cavity form an integrated hollowed-out part facilitating deslagging, the boring rod body is provided with a damping supporting device through the four grooves, and the damping supporting device is used for providing stable axial supporting for the boring rod. The damping supporting device comprises supporting rods, the front ends of the four supporting rods are movably connected with grooves in rod bodies through pin shafts and torsion springs, the torsion springs provide spring force for the supporting rods to be inclined and opened backwards all the time, and a plurality of universal balls arranged front and back are arranged on the outer sides of the supporting rods. When the boring rod feeds a workpiece, the universal balls make contact with the workpiece, the supporting rod provides stable circumferential supporting for the boring rod in the working process through the torsion spring, the supporting effect of the boring rod is improved, vibration is reduced, vibration in the part machining process is reduced, and the quality of the machined surface is improved.

The utility model provides a damping boring cutter bar for lathe deep hole processing, which relates to the technical field of metal processing, and comprises a boring bar mechanism, the boring bar mechanism comprises a conical head, a connecting rod is arranged at one end of the conical head, a connecting mechanism is arranged at one end of the connecting rod far away from the conical head, the connecting mechanism comprises a cutter head, and the cutter head is connected with the connecting rod. A fixing cover is arranged at one end of the tool bit, and a butt joint sleeve is arranged in the fixing cover. According to the utility model, the connecting mechanism with the tool bit is in butt joint with the connecting rod, so that a worker only needs to make the fixing cover with the buckling plate in the fixing shell on the outer surface of the connecting rod in a buckling manner. And then, a worker can insert a buckling plate into a buckling device in a penetrating manner, and buckles on the inner side of the butt joint shell are in butt joint with the bottom end of the fixed shell. And finally, by rotating the fixing screw, the fixing screw penetrates through the butt joint shell in a threaded rotation mode to be fixed to the fixing shell, and therefore the practicability of the fixing screw in the actual using process is improved.

The invention discloses a damping boring rod for deep hole machining of a hydraulic oil cylinder body and a vibration suppression method. The damping boring rod comprises a rod body, a damping assembly is installed on the rod body and comprises an arc plate connected to the rod body in a nailing mode, a sleeve is fixed to the top of the arc plate, a telescopic rod is installed at the top of the sleeve, and a ball is installed at the top of the telescopic rod; a circular plate is installed on the inner wall of the sleeve, a lead screw in threaded connection with the bottom of the telescopic rod is installed in the center of the circular plate and penetrates through the bottom of the circular plate to be connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is fixed to the transverse rod; the transverse rod is rotationally installed on the sleeve, penetrates through one end of the sleeve, extends into the shell cover and is in butt joint with the one-way locking assembly. By arranging the damping assembly and the one-way locking assembly, rapid adjustment can be conducted, the telescopic rod is automatically locked under vibration or external force interference, supporting displacement is prevented, it is ensured that rigid supporting of the ball is constant, machining chatter is restrained, and deep hole machining stability and precision are guaranteed.

An electromagnetic actuator assembly, integrated within a boring tool, for controlling unwanted machining vibration, comprising an outer tubular oscillating mass made of ferromagnetic material, through which the magnetic flux can pass; an inner stator that comprises an electromagnet assembly, located at the center of the tubular oscillating mass, for applying a controllable magnetic field to the oscillating mass; one or more damping elements, each having one or more springs and / or a damping material with predetermined stiffness and damping properties (such as a polymer or oil); a controller for providing a desired current to the electromagnets of the electromagnet assembly to obtain the controllable magnetic field; a holder for allowing the rotation of the electromagnet assembly to a desired angle, for stimulating the oscillating mass to apply a damping force, based on a combination of the magnetic field and stiffness and damping properties, which is aligned with the direction of the unwanted vibration.

The utility model discloses a boring bar device for deep hole machining, which comprises a supporting shell, a driving component is arranged in the supporting shell, an adjusting component is arranged on one side of the driving component, and a boring bar component is arranged in a supporting and limiting component. The adjusting assembly comprises a rotating disc arranged in the supporting shell, and an adjusting groove is formed in one end of the rotating disc. The boring rod assembly comprises a supporting column which is in sliding connection with the adjusting groove through a rotating column, and the outer surface of the supporting column is connected with a boring rod; under the action of the adjusting assembly and the boring rod assembly, the position of the boring rod can be adjusted by changing the position of the rotating column above the supporting column in the adjusting groove, so that the rotating diameter of the outer end of the boring rod can be changed according to different hole diameters, the application range of the boring rod is widened, and meanwhile the boring rod can be conveniently adjusted. The boring rod does not need to be replaced, only the boring rod needs to be adjusted, time waste caused by replacement is reduced, and the working efficiency is further improved.

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.

The invention relates to the technical field of boring devices, and particularly discloses a deep hole wall boring device which comprises an operation table, a workpiece arranged on the operation table, a pair of supporting devices symmetrically arranged on the two sides of the workpiece, a boring rod arranged in the pair of supporting devices at the same time, a turning tool arranged on the side wall of the boring rod and a first driving device used for driving the boring rod to rotate. The second driving device is used for driving the boring rod to move along the axis of the boring rod; the workpiece is provided with a pair of processing holes which are partially overlapped; the supporting device comprises a supporting seat and a pair of supporting holes formed in the supporting seat; the diameter of the supporting holes is smaller than that of the machining holes, and the axes of the machining holes coincide with the axes of the supporting holes. The boring rod penetrates through the machining hole, and the two ends of the boring rod are rotationally arranged in the supporting holes. According to the deep hole wall boring device, deep hole boring operation can be more stably carried out, shaking and deviation of the boring rod are reduced, and the machining precision is improved.

A vibration damped tool holder (1) for a metal cutting tool (2), comprising a holder body (3) having an internal cavity (10) extending into the holder body (3) along a longitudinal axis (6) and having a first cavity end at a first holder body end (4). The damped tool holder further comprises an adjustment mass (15) movably disposed within the cavity (10), extending along the longitudinal axis (6) and having a first adjustment mass end at the first holder body end (4). The damped tool holder further comprises a damping medium (22) surrounding the adjustment mass (15) within the cavity (10) and a single primary spring element (18) positioned within the cavity (10). The outer spring element end (19) is fixedly secured to the first cavity end by its longitudinal axis (6) and the inner spring element end (20) is fixedly secured to the first tuning mass end by its longitudinal axis (6).

The application discloses a female thread turning chip removal mechanism and a chip removal method, belongs to the field of machining manufacturing, and relates to female thread turning machining of carbon structural steel and alloy structural steel. The chip removal mechanism comprises a chip guide device and a cleaning device, a chip guide body is arranged on a tool shank of a turning tool, a chip cavity for guiding and extruding iron chips is formed in the chip guide body, and the opening of the chip cavity is aligned with the front surface of a blade. In the process of turning the female thread of a part, the generated iron chips enter the chip cavity of the chip guide body, the chip cavity guides and extrudes the iron chips, and at the same time, the cleaning device matched with the chip guide device sprays gas or liquid to the moving track of the iron chips, and the extruded iron chips are blown out of the inner contour of the part. The chip removal mechanism has the advantages of simple principle and structure, guaranteed machining quality of the part, increased service life of the tool, improved machining efficiency, and good popularization and application value.

The invention belongs to the technical field of boring tool arm structures, and particularly relates to a boring tool arm structure capable of absorbing vibration impact, the boring tool arm structure comprises a rotary supporting assembly, a swing type clutch assembly, a retraction locking assembly, a driving assembly and a boring tool assembly, the rotary supporting assembly is arranged on the driving assembly, the swing type clutch assembly is slidably arranged in the rotary supporting assembly, and the retraction locking assembly is arranged on the rotary supporting assembly. The retraction locking assemblies are symmetrically arranged between the rotary supporting assembly and the swing type clutch assembly, and the boring cutter assembly is arranged at the tail end of the swing type clutch assembly. A mechanism capable of buffering is designed to replace an integrated cutter bar, when the radial load is too large, vibration is absorbed in a swinging mode, and the cutter bar leaves a workpiece; in addition, a swing type clutch assembly is provided, when the cutter bar deflects, power transmission between the cutter bar and the motor is cut off through a clutch structure, potential safety hazards can be remarkably reduced, and sufficient operation time is reserved for shutdown and manual reset.

The utility model discloses a curved surface inner hole profiling machining tool based on a lathe, the middle part of a boring cutter rod of the tool is hinged with one end of a support, and the other end of the support is fixed on a tool rest. The boring cutter is vertically fixed to one end of the boring cutter rod, the other end of the boring cutter rod is hinged to the rolling wheel, and one end of an elastic pressing mechanism vertically arranged in the middle of the boring cutter rod abuts against one side of the support. The explorator is positioned and fixed on the explorator seat, one end of the explorator seat is horizontally fixed on one end head of the conical shaft, the outer edge of the roller is propped against a curved surface on one side of the explorator, a cutting edge of a semicircular plate at one end of the boring cutter is propped against the bottom surface of a blank hole of a workpiece, and a curved surface contour line of the explorator is matched with a curved surface inner hole generatrix of the workpiece. The distance L1 from the center of the semicircular plate to the center of the roller pin is equal to the distance L2 from the center of the hinge pin to the center of the roller pin, and the radius R1 of the semicircular plate is equal to the radius R2 of the roller. The machining difficulty of the curved surface inner hole is greatly reduced, the machining cost is remarkably reduced, and the machining efficiency and the machining quality are improved.

A tool holder, for a tool assembly, comprising a tubular element having a cavity and a central axis; a damping mass arranged within the cavity and movable radially with respect to the central axis and relative to the tubular element; an adapter having a rear part fixed to the tubular element, and a front part for connection to an end effector of the tool assembly, the rear part comprising an opening, and the damping mass is at least partly received in the opening with a radial clearance; and an elastic element positioned between the adapter and the damping mass, the elastic element being arranged to support the damping mass and to damp radial vibrational movements of the damping mass relative to the tubular element, and the elastic element comprising a front surface substantially perpendicular to the central axis and a rear surface substantially perpendicular to the central axis.

The invention relates to a drilling method, in particular for a turbine shaft of an aircraft turbine engine, which method is implemented by a drilling machine (100) including a drill rod (8), a cutting tool (4) mounted on a free end of the drill rod, and an anti-vibration ring (10) positioned on the drill rod behind the cutting tool, the anti-vibration ring including a sleeve including a bore extending longitudinally coaxially between a front end and a rear end of the sleeve, as well as a first absorption means positioned in the bore and a second absorption means positioned on an outer circumference of the sleeve, the method including steps of: a) placing the anti-vibration ring on the drill rod near a free end of the drill rod; b) securing the cutting tool to the free end of the drill rod; c) drilling a bore to be made in the turbine shaft by pushing, during which the anti-vibration ring is inserted into an inlet (21) of the bore to be made.

The utility model discloses a streamline shock-resistant damping boring bar, which relates to the technical field of metal hole machining, and comprises a chip pocket a, a damping groove, a boring bar, a cutter head, a chip pocket b and a blade, the cutter head is connected with the boring bar, the chip pocket a, the damping groove and the chip pocket b are arranged on the cutter head, the blade is fixedly arranged at the top of the cutter head, and the chip pocket b is arranged in the damping groove. The chip pocket a is located in the middle of the tool bit, the chip pocket b is located at the lower end of the tool bit and connected with the chip pocket a, a clamping assembly is arranged at one end of the boring rod, and an anti-vibration assembly is arranged in the boring rod. The deep hole machining universality is guaranteed, the working efficiency is improved, the workpiece machining surface quality is improved, the production quality is greatly improved, the inner hole machining surface quality is improved, the workpiece is prevented from vibrating a cutter, scrap iron is smoothly discharged, the machining quality is improved, the equipment adjusting period is shortened, and the poor workpiece machining is reduced.

The cutter bar comprises a cutter handle and the blade, a containing groove is formed in the position, close to the left side edge, of the upper end of the cutter handle, the blade is placed in the containing groove, a first locking screw is arranged at the upper end of the blade, and the blade is fixed to the cutter handle through the first locking screw. A sliding groove is formed in the lower end of the knife handle, a supporting block is slidably connected to the inner side wall of the sliding groove, the lower end of the supporting block penetrates through the sliding groove, a plurality of vertically-arranged supporting columns are arranged at the upper end of the supporting block in an inserted mode from left to right, the supporting columns are in threaded connection with the supporting block, and a transversely-formed storage groove is formed in the knife handle. The upper end of the supporting column penetrates through the cutter handle and is fixedly connected with a second gear, and the second gear is located in the containing groove. Through the arrangement of the supporting block, the supporting column and other mechanisms, improvement and optimization are conducted on the basis that the blade can be replaced, the cutter handle can be accurately adjusted to the needed height, the anti-loosening effect is achieved, and the good market prospect is achieved.

The drill (2) extends along an axis of rotation (4) and comprises at least three main cutting surfaces (6), which, from a nose (8) arranged on a radius (r), each extend in the direction of the axis of rotation (4). The at least three main cutting surfaces (6) converge on a drill tip (5), in particular without the presence of transverse cutting surfaces. From the drill tip (5) and over the entire radial extent thereof, each main cutting surface (6) adjoins an edge-free surface (10), which comprises a clearance surface (14) and which in each case transforms into a respective flute (12). Figure for abstract: Fig. 1

The utility model discloses a vibration absorption sleeve type cutter, and relates to the technical field of machine tool machining. A vibration absorption sleeve type cutter comprises a sleeve body, the interior of the sleeve body is hollow and used for containing a workpiece to be machined, and a plurality of first weight reduction round holes are formed in the side wall of the sleeve body; the device further comprises a vibration absorption protection sleeve. A top plate used for being connected with a boring-milling machine is arranged at the top end of the barrel, and an annular plate is arranged at the bottom end of the barrel. And a cutter box for mounting a boring cutter is arranged on the bottom surface of the annular plate. The machining device can effectively machine the outer circle of a valve shaft of the ball valve of the pumped storage generator set, the inner circle of a valve body hole and related workpiece parts of similar structures, can effectively improve the working efficiency, and is convenient to operate, high in safety and stability and beneficial to actual production, popularization and application, and machined products are good in quality.

The present invention discloses a reverse boring tool, which relates to the field of cutting tools. The reverse boring tool is suitable for passing through the avoidance hole and processing a reverse boring hole coaxial with the avoidance hole on the workpiece. The reverse boring tool comprises a tool holder, a tool holder and a blade. The tool holder is connected to the tool holder, and the blade is fixed to the tool holder. The blade is provided with a plurality of blades, and the plurality of blades are evenly spaced and arranged at the outer edge of the tool holder, and the plurality of blades are arranged in an arc shape with the central axis of the tool holder as the center. The tool holder is suitable for rotating along the central axis and revolving around the central axis of the avoidance hole under the drive of a machine tool, and the plurality of blades sequentially contact the surface to be processed for cutting to form a reverse boring hole. The present invention is provided with a plurality of blades, and the plurality of blades continuously cut when the reverse boring tool rotates, thereby improving the processing efficiency.

The utility model belongs to the field of machining, and particularly relates to an anti-vibration connecting structure of a vertical combined turning tool bar, the combined turning tool bar comprises a main tool bar and an SVJCR tool bar, the main tool bar is provided with an opening and a connecting hole, a connecting shaft of the SVJCR tool bar is installed in the connecting hole and locks the opening, and the SVJCR tool bar is connected with the main tool bar. The device is used for eliminating a mounting gap between a connecting shaft and a connecting hole of the SVJCR cutter bar. Compared with the prior art, the vertical combined turning tool bar structure disclosed by the utility model is simple in structure and convenient to manufacture, assemble and disassemble; firm connection under inevitable cutting vibration can be kept; and the connection of the vertical combination of the turning tool bar with smaller radial dimension is particularly facilitated.

The drill extends along an axis of rotation and comprises at least three main cutting surfaces which, starting from a cutting corner arranged on a radius (r), each extend in the direction of the axis of rotation. The at least three main cutting surfaces converge on a pointed drill tip, in particular without the presence of transverse cutting surfaces. Starting from the drill tip and over the entire radial extent thereof, each main cutting surface adjoins an edge-free surface, which comprises a clearance surface and in each case transitions into a respective flute.

Provided is a holder capable of firmly fixing a hammer to a main body and reducing vibration of the main body by reducing positional deviation of an elastic member that fixes the hammer to an inner peripheral surface of the main body. The holder includes: a main body having a rod shape extending from a first end surface to a second end surface along a central axis and having a recess, i.e., a large-diameter portion, extending from the first end surface toward the second end surface; a hammer located inside the large-diameter portion; a first annular elastic member; and a cover pressed into the large-diameter portion from the first end surface side. An inner peripheral surface of the large-diameter portion has a first region located on the first end surface side and a second region located closer to the second end surface than the first region. The first elastic member is in abutment with the inner peripheral surface of the large-diameter portion at the second region and fixes the hammer relative to the inner peripheral surface. The surface roughness of the second region is greater than the surface roughness of the first region.

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

The utility model relates to a double-shoulder self-sealing drilling and boring rod structure for a deep hole drill, which comprises a hollow rod body, a double-end double-shoulder external thread and a double-end double-shoulder internal thread, and the double-end double-shoulder external thread and the double-end double-shoulder internal thread are processed at two ends of the hollow rod body; the thread form is a rectangular square thread, the inner and outer thread ends adopt double shoulders, and an inner and outer thread small end sealing angle and an inner and outer thread large end sealing angle with 13-angle sealing surfaces are machined at the inner and outer thread small end and the inner and outer thread large end; the double-end double-shoulder external thread of one drilling and boring rod is screwed into the double-end double-shoulder internal thread of the other drilling and boring rod, and the whole drilling and boring rod is formed by end-to-end connection after tightening and screwing; the 13-degree sealing surfaces of the large end and the small end of the thread are attached to form an angle self-sealing surface; the rectangular threads of the drilling and boring rod transmit torque, the double-shoulder structure of the threads positions and enhances the strength of the threaded connector, the structure is simple, large torque can be transmitted, two shoulder faces can be sealed at the same time after screwing, and the problem of leakage of cooling liquid is solved.

A non-rotating boring tool for internal turning includes a boring bar having an elongated body, a cutting element with a rake side, a relief surface and a cutting edge, and an electrically controlled vibration actuator for active vibration damping of the boring bar. Moreover, when seen in a cross-sectional plane that is perpendicular to a longitudinal axis of the elongated body and intersecting the cutting edge in a radially outermost point, straight and imaginary first and second reference lines intersect the cutting edge in the radially outermost point with the first reference line extending at an angle of 6° to the relief surface on the outside of the cutting element, and the second reference line extending between the rake side and the relief surface at an angle of 10-40° to the first reference line. The actuator is arranged with its working axis extending in parallel with the second reference line.

The holder includes a body having a rod shape extending from a first end surface to a second end surface and including a large-diameter portion which is a recess extending from the first end surface, a weight located in the large-diameter portion, a ring-shaped first elastic member, and a lid press-fitted into the large-diameter portion from the side of the first end surface. The inner peripheral surface of the large-diameter portion includes a first region located on the side of the first end surface and a second region located closer to the second end surface than the first region. The first elastic member comes into contact with the inner peripheral surface of the large-diameter portion in the second region to fix the weight to the inner peripheral surface. The surface roughness of the second region is greater than the surface roughness of the first region.

The adjustable reverse boring groove cutter comprises a cutter bar, an embedded protruding block is arranged on the cutter bar, a cutter holder is connected to the embedded protruding block in a clamped mode, the cutter holder comprises a radial extension part, the radial extension part protrudes in the radial direction of the cutter bar, a mounting groove is formed in the radial extension part, and the cutter bar is connected with the mounting groove in a clamped mode. The mounting groove comprises a forward cutter groove and a pull-back cutter groove, the forward cutter groove and the pull-back cutter groove are formed in the two ends of the radial extension part in the axial direction of the cutter bar respectively, and blades are arranged on the forward cutter groove and the pull-back cutter groove. According to the adjustable reverse boring groove cutter, the same cutter can be used for machining the front face and the back face, the dismounting step and the positioning step are reduced, and certain machining precision can be improved while the machining efficiency is improved.