116results about "Boring bars" patented technology

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 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.

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.

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 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 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.

Even when a cutting insert having a long length is used, the effects of bending of the tool head and increase in the moment acting on the fastening mechanism can be suppressed, and thus better cutting performance can be achieved. A tool head replacement type cutting tool (1) includes a shank (10) including a fastening mechanism (30) formed at a front end portion (10t) in a length direction of the shank (10) and configured to mount a tool head (20), and a recess (16) formed at the front end portion (10t) and configured to accommodate a portion of a cutting insert (50) held by the tool head (20) to avoid interference with the cutting insert (50). The recess (16) can be configured to accommodate a non-use portion of the cutting insert (50) held by the tool head (20) to avoid interference with the cutting insert in a state where the tool head (20) is mounted at the front end portion (10t).

The present disclosure provides a cutting insert having excellent chip discharge properties. A cutting tool according to one aspect of the present disclosure has a main body part and a first cutting part fixed to the main body part. The main body portion has a trunk portion located on the rear end side and a branch portion extending from the trunk portion toward the front end. The first cutting portion has a first rear surface located rearward of the rotation direction of the rotation shaft and a first inner side surface facing the rotation shaft. The branch portion has a first branch portion connected to the trunk portion and the first rear surface, and a second branch portion connected to the trunk portion and the first inner surface.

To provide a cutting insert that suppress a thickness although the same can switch and use a total of four cutting edges, a body and a cutting tool.SOLUTION: A cutting insert 30, which is attached to a body 20 of a cutting tool 10, has: a first face 110 of substantially parallelogram shape comprising one end face of a pair of end faces facing each other; second faces 210, 220 of substantially trapezoidal shape which comprises a pair of side faces facing each other, and function as faces including first rake faces 611, 612 and second rake faces 621, 622; first cutting edges 511, 512 which are formed along sides 111, 113, which are adjacent to the first face 110, of sides partitioning each second face 210, 220; and second cutting edges 521, 522 which are formed along one sides 201, 203 of sides other than sides which are adjacent to the first face 110 partitioning each second face 210, 220.SELECTED DRAWING: Figure 1

The invention is related to a cutting tool (100) comprising a toolholder (110) and a cutting head (150), wherein the toolholder (110) comprises an internal cavity (118), and wherein the toolholder (110) further comprises a tunable vibration damping assembly (130) arranged in the internal cavity (118), wherein the tunable vibration damping assembly (130) has a front damper end (132) and a rear damper end (134), wherein the cutting head (150) comprises a rear head end (162), wherein the rear head end (162) is connected to the toolholder (110), and wherein the tunable vibration damping assembly (130) is separated from the cutting head (150) via an air gap (160) extending from the rear head end (162) to the front damper end (132). The invention also relates to a method (200) for assembling such a cutting tool (100).

The invention belongs to the technical field of turning machining of inner holes of rotary body workpieces, and discloses a lengthened boring rod connecting device based on a zero point positioning mechanism. The side face of the power spindle box body assembly serves as a connecting base face of the boring rod seat assembly, and the lengthened boring rod assembly is clamped in an inner hole of a hydraulic expansion sleeve of the boring rod seat assembly and connected with a power spindle tool connector in the power spindle box body assembly at the same time. A boring rod seat is locked to the side face of the power spindle box assembly through a zero point positioning mechanism, two hydraulic expansion sleeves are arranged in an inner hole of the boring rod seat, and the size of each hydraulic expansion sleeve corresponds to the diameter of a clamping outer circle of a boring rod. Lengthened boring bar assemblies with the same diameter and different lengths are fastened in the boring bar seat through a hydraulic expansion sleeve, and a cutter handle interface flange of each lengthened boring bar assembly is locked on the power spindle box body assembly, so that the lengthened boring bar assemblies are angularly and axially positioned. And meanwhile, a plurality of vibration reduction structures are designed in the connecting device, so that the cutting vibration of the lengthened boring rod can be reduced.

This anti-vibration structure for a rotating body (2) comprises: the rotating body (2) which is cylindrical, which has an axis of rotation (X), and which comprises an opening (7a) provided at one end in a direction running along the axis of rotation (X) and a hollow part (7) that continues from the opening (7a) and is provided along the axis of rotation (X); a weight member (12) disposed in the hollow part (7); a plurality of elastic members (24, 25) for retaining the weight member (12); and a head member (4) that blocks off the opening (7a) and is connected to the rotating body (2) coaxially with the axis of rotation (X). The opening (7a) and the hollow part (7) have a cross-section in a circular shape centered on the axis of rotation (X). The weight member (12) has a cylindrical columnar shape, and is retained so as to be coaxial with the axis of rotation (X). The head member (4) is configured so that a cutting tool (5) can be attached to the side opposite the side connected to the rotating body (2). The weight member (12) has a protrusion (13) protruding further to the side of the head member (4) than a boundary (B) between the outer peripheries (21a, 41a) of the rotating body (2) and the head member (4).

The utility model provides a large-specification material turning cutting tool. The large-specification material turning cutting tool comprises a tool handle, tool rests and a blade which are sequentially connected, the tool handle is of a T-shaped structure, the blade is of a long-strip-shaped structure, and the two ends of the head of the tool handle are connected with the two ends of the blade through the tool rests respectively. The large-size material turning-off tool overcomes the defects that an existing turning-off tool is large in contact area, cuttings are not prone to breakage, universality is insufficient, and large-size-diameter bars cannot be turned off.

An anti-vibration structure for a rotating body (2) is provided with: a cylindrical rotating body (2) having a rotation axis (X), an opening (7a) provided at one end in the direction along the rotation axis (X), and a hollow section (7) provided continuously along the rotation axis (X) from the opening (7a); a weight member (12) disposed in the hollow portion (7); a plurality of elastic members (24, 25) that hold the weight member (12); and a head member (4) that closes the opening (7a) and is connected to the rotating body (2) so as to be coaxial with the rotating shaft center (X), the cross-section of the opening (7a) and the hollow section (7) being a circle centered on the rotating shaft center (X), the weight member (12) being cylindrical and disposed so as to be coaxial with the rotating shaft center (X), the head member (4) being capable of attaching the cutting tool (5) to the side opposite the side connected to the rotating body (2), and the head member (4) being capable of attaching the cutting tool (5) to the rotating body (2). The weight member (12) has a protruding portion (13) that protrudes further toward the head member (4) than a boundary (B) of outer peripheries (21a, 41a) between the rotating body (2) and the head member (4).

The invention relates to a stepped rough boring cutter for machining a stepped taper hole and a stepped taper hole machining method. The cutter comprises a cutter bar, a boring cutter head and a boring cutter head, the multiple tool aprons are installed on the tool bar, the multiple tool aprons are distributed in the axial direction of the tool bar at intervals, the tool aprons can move relative to the tool bar in the radial direction of the tool bar, and locking structures used for locking the tool aprons are arranged between the tool aprons and the tool bar; the adjusting assembly is arranged on the cutter bar and used for driving the cutter holder to move away from the axis of the cutter bar in the radial direction of the cutter bar. According to the tool, the multiple tool aprons capable of moving in the radial direction are arranged in the axial direction of the tool bar at intervals, the tool aprons can adapt to the aperture size difference of all steps of stepped taper holes, rough boring machining of the stepped taper holes can be completed through one-time clamping, the tool aprons can flexibly move in the radial direction of the tool bar, the tool aprons can adapt to the aperture requirements of the stepped taper holes of different specifications, and universality is greatly improved; and the method is particularly suitable for small-batch multi-specification stepped taper hole machining scenes, and the single-piece machining cost is remarkably reduced.