178results about "Boring bars" patented technology

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.

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 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 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.

The invention provides a main body with a guide part, a guide pad and a hole processing tool, and the guide part can restrain welding caused by heat generated by friction during processing and prolong service life. A machine body (100) of a hole processing tool (10) is provided with: a cylindrical main body (110); and a guide part (300) provided on the outer periphery of the main body (110). The guide section (300) has: a holding groove (320) formed in the main body (110); and a rotating body (330) which is accommodated in the holding groove (320) in a rotatable manner.

The present disclosure relates to a long boring bar device of a machine tool and, more particularly, to a long boring bar device of a machine tool, wherein a boring bar is detachably fastened to a holder, and a head tool is detachably fastened to the boring bar to automatically exchange a head tool through an automatic tool changer, thereby reducing non-processing time and improving productivity of the machine tool.

The invention discloses an eccentric boring rod and cutter relieving device for machining a special-shaped cavity, relates to the technical field of boring rods, and aims to solve the technical problem that the machining efficiency is affected due to long manual debugging time of the eccentric boring rod. Comprising a first oil storage cavity used for storing hydraulic oil, a second oil storage cavity communicated with the first oil storage cavity and an eccentric wheel installed in a rotating mode, and the end of a first piston rod is fixedly connected with a flexible column used for adjusting the eccentric angle of a tool bit. The dynamic balance assembly comprises a balance cavity and a compensation cavity which protrudes outwards and is formed in the inner cavity wall of the balance cavity, the inner cavity wall of the balance cavity is fixedly connected with a separation bag used for separating the compensation cavity, and a balance weight part is arranged in the balance cavity. The device has the advantages that the eccentric angle of the tool bit can be automatically adjusted, the step of manual timing sequence debugging is omitted, the machining preparation period is greatly shortened, the dynamic balance assembly compensates unbalanced torque in real time, vibration is reduced, the machining precision is improved, and the requirement for batch and efficient machining of special-shaped cavities is met.

The precise numerical control boring machine comprises a first boring rod, a second boring rod, a shell, an axial feeding device, a radial feeding device, a motor anti-winding device and a tool rest, the shell is of a cylindrical structure, the two ends of the shell are sealed through end covers, and the end covers at the two ends are fixedly connected with the first boring rod and the second boring rod respectively; the axial feeding device is fixedly installed between the end covers at the two ends to achieve axial feeding, the radial feeding device is embedded in the axial feeding device, and the tool rest is installed on the radial feeding device to achieve radial feeding. One end of the motor anti-winding device is fixed to the axial feeding device, the other end of the motor anti-winding device is embedded into the second boring rod, and rotating fit is achieved through a bearing. According to the structure, through compound control of the axial feeding device and the radial feeding device, continuous high-precision cutting of the conical hole is achieved, meanwhile, a cable is prevented from being wound and broken when the main shaft rotates through the motor anti-winding device, and the reliability and safety of machine body operation are guaranteed.

The present invention discloses a bidirectional piezoelectric ceramic variable stiffness, memory metal spring variable mass vibration damping boring bar, which belongs to the field of metal cutting processing technology and includes a variable stiffness module and a variable mass module. The variable stiffness module includes a variable stiffness cantilever beam, and the interior of the variable stiffness cantilever beam is composed of a bidirectional piezoelectric ceramic, a first support block and a second support block. The variable mass module includes an open hollow cylinder, and a closed cavity is provided in the open hollow cylinder. The closed cavity is provided with a memory metal spring, a heating rod and a displacement sensor. The closed cavity is composed of the inner wall on the left side of the open hollow cylinder and the slider on the right side and EPDM rubber. The slider is symmetrically provided with a one-way valve with different flow directions. The present invention adopts the above-mentioned bidirectional piezoelectric ceramic variable stiffness, memory metal spring variable mass vibration damping boring bar to solve the problem of part processing size deterioration due to vibration during the boring process, improve the quality of part processing, and reduce errors.

The anti-vibration device (10) for the machining of a shaft (30) comprises a first fixed ring intended to be kept inside a shaft (30) by means of a shoulder (17), said anti-vibration device comprising: • at least one first external groove (12) and at least one first external seal (121) for forming at least one contact with the internal surface of the shaft (30); • at least one first internal circumferential groove (11) and at least one first internal seal (110) for forming at least one contact with the external surface of the bar (30); • an internal circumferential cavity (18) that is able to cause the circulation of a fluid (122) arriving through a first duct (14, 16) and leaving through a second duct (13, 15), said first duct (14, 16) and second duct (13, 15) passing through the radial thickness of the anti-vibration device (10), the internal circumferential cavity (18) making it possible to realize a vibration-damping function when a fluid (122) passes through it.

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 utility model relates to the field of boring processing, and discloses a tool for boring a deep hole, which comprises a bottom plate, a fixing mechanism and a rotating mechanism, the fixing mechanism is located above the bottom plate and comprises bearing seats distributed on the left side and the right side of the bottom plate, a workpiece is placed between the bearing seats, and a clamping assembly used for pressing the workpiece is arranged between the bearing seats; the rotating mechanism comprises a connecting cutter handle and a boring cutter rod penetrating through the bearing seat and a workpiece, a blade adjusting assembly used for installing a boring cutter blade is arranged in the middle of the boring cutter rod in the Z-axis direction, one end of the connecting cutter handle is connected with the boring cutter rod, the other end of the connecting cutter handle is connected with a machine tool spindle, and the machine tool spindle drives the connecting cutter handle to rotate so as to drive the boring cutter rod to rotate. The blade adjusting assembly can machine the inner hole of the workpiece. The utility model solves the problem that the existing cutter cannot meet the processing requirements of deep hole parts.

A micro internal boring tool includes two to four shank flat surfaces and two to four integrally formed teeth. The outermost point of the cutting edge of the tooth defines an outer cutting diameter (OD) satisfying the condition: 2 mmlt; oDlt; 9 mm.