91results about "Adverse effect compensation" patented technology

A rotary cutting tool comprising a tool body (2) and a cutting head (30) with a coupling portion (31) receivable between axially projecting coupling legs (12) on the tool body. Each coupling leg has a torque transfer surface (15), which is configured to abut against a corresponding torque surface (35) on the cutting head in order to transfer torque from the tool body to the cutting head. Each one of said torque surfaces (35) on the cutting head is convex as seen in any plane that is perpendicular to the centre axis (C2) of the cutting head and extends across the torque surface (35), and / or the torque transfer surface (15) on each one of said coupling legs is convex as seen in any plane that is perpendicular to the centre axis (C1) of the tool body (2) and extends across the torque transfer surface (15).

A cutting insert in an aspect of the present disclosure has a cutting part. The cutting part has a first surface, a second surface, a third surface located between the first surface and the second surface, and a flow path extending from the first surface toward the second surface. The flow path has an outflow port opening into the first surface, and a first flow path extending from the outflow port toward the second surface. In a first cross section that passes through a central axis of the first flow path and is orthogonal to the first surface, a width of the first flow path in a direction parallel to the first surface increases as going away from the first surface.

Provided is a turning apparatus with MQL based on magnetic circulation and ultrasound-assisted infiltration, comprising a turning tool fixed with 2D ultrasonic auxiliary device; a magnetic circulation nozzle and magnetic circulation recycling nozzle arranged on both sides of turning tool; lubricant channels respectively provided inside magnetic circulation nozzle and magnetic circulation recycling nozzle; magnets arranged on peripheries of lubricant channels; polarities of ends of magnets on the two nozzles facing to turning tool are opposite; lubricant channel of magnetic circulation nozzle is connected to one end of first flexible pipe, and another end is connected to lubricant canister after passing through peristaltic pump; one end of second flexible pipe is connected to the peristaltic pump, and another end is connected to a filtering mechanism; one end of third flexible pipe is connected to the magnetic circulation recycling nozzle, and another end is connected to liquid inlet of filtering mechanism.

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 invention relates to a turning tool (1) comprising a tool body (2) having an insert seat (5) configured to receive a cutting insert (6a-c). The insert seat (5) comprises a bottom surface and a first side wall section (8a) and a second side wall section (8b), the bottom surface together with the first and second side wall sections defining a space for receiving the cutting insert. The insert holder (5) further comprises a rigid member (17) integrally formed by a first end portion (18a) thereof to an upper portion of the first side wall section (8a) and by a second end portion (18b) thereof to an upper portion of the second side wall section (8b), the side wall sections are arranged above the space so as to extend between the side wall sections above the space and are rigidly connected with the side wall sections. The invention also relates to a turning tool assembly comprising such a turning tool (1) and a cutting insert (6a-c).

A cutting insert for a modular rotary cutting tool is disclosed. The cutting insert may include a shaft, an opposing insert centering surface, and a convex torque transmitting insert driving surface.

A machine tool, includes: a frame; a hollow ram disposed on the frame in a reciprocable manner; a hollow spindle rotatably supported by the ram, the spindle including a spindle hole located at a distal end, and a spline hole located at a basal end; a guide block disposed in the spindle and having a guide hole extending along a center axis of the spindle; and a spindle drive shaft rotatably supported by the frame, the spindle drive shaft including a spline shaft that engages with the spline hole, and a support shaft disposed at a distal end of the spline shaft to be guided in sliding contact with the guide hole.

A two-hole core drilling machine of the invention includes a body, a vertically reciprocating carriage vertically reciprocably mounted to the body, a fixing plate coupled to one side surface of the carriage, to rotatably support a drive shaft of a motor, a pivoting plate fastened to the fixing plate under a condition that a pivot angle of the pivoting plate is changed, a moving plate fastened to the pivoting plate under a condition that a length of the moving plate from the pivoting plate is varied, a belt or chain mounted between a drive pulley coupled to the drive shaft and a driven pulley coupled to a driven shaft rotatably mounted to the moving plate, a first core bit coupled to the drive shaft, and a second core bit coupled to the driven shaft.

The invention relates to a device for cooling a tool, which device comprises a main body, a contact element, and at least one inlet into the main body and an outlet out of the main body, wherein the inlet and the outlet are interconnected by one or more inner channel(s) in the main body, and the device can be connected to the tool in such a way that the contact element is in contact with the tool, and the one or more inner channel(s) is / are designed to conduct a cooling fluid. One or more inner channels comprise(s) a contact portion, the contact portion being in contact with the contact element, and the contact portion comprising multiple flow-guiding elements which are designed in such a way that they locally increase the turbulence and the flow rate of the cooling fluid through the contact portion. The invention also relates to a system comprising the device and the tool, and to a cooling method using the system.

By accurately inspecting and measuring (correcting) the relative position of the protrusions to the cutting edge, it becomes easier to position them appropriately, and by devising the arrangement of the protrusions, chip evacuation performance is improved regardless of the insert shape. [Solution] A cutting tool comprising an upper surface 10, a lower surface, a side surface, a cutting edge 60 including a pair of main cutting edges 61 and a corner cutting edge 62, a first upper surface 11 and a second upper surface 12, an inclined surface 40, a groove 70 provided on the second upper surface 12, and a first projection 41 and a second projection 42 provided so as to protrude from the inclined surface 40. The first projection 41 extends along the extension line 70eL of the groove 70, and the second projection 42 is positioned symmetrically with respect to the extension line 70eL. At the intersection point P1 of the corner cutting edge 62 and the bisector Ba in a top view, if the distances from the imaginary line VL that intersects the bisector Ba perpendicularly to the tip 41t of the first projection 41 and the tip 42t of the second projection 42 are L1 and L2, respectively, then L1

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.

What is provided is a modular cutting tool (1; 40) with a base body (2) extending along a tool axis and a tool head (3) connected via a positive coupling to the base body (2), wherein the positive coupling is formed from front toothings (4), which are engaged with one another, on the base body (2) and tool head (3), which each have a plurality of radially running teeth (5), which are distributed equidistantly around the tool axis. For each front toothing (4) the tip surfaces (7) of the teeth (5) lie on a virtual inner conical surface in the tool head (3) or base body (2) with the tool axis as cone axis, and the tip surfaces (7) of the teeth (5) are rounded concavely.

A drill bit having roughness areas in a flute to reduce debris clogging in the flute during drilling, reduce temperatures of the drill bit and material being drilled, and lubricate the drill bit during drilling among other features. The drill bit is useful to drill in many unique materials including mammalian bone to reduce or eliminate bone chips occluding the flute. The roughness areas evacuate the bone chips quickly and efficiently and generate a low temperature of the drill bit and drilled material.

In order to easily disposed a projection by accurately inspecting and measuring (correcting) a position of the projection relative to the cutting edge, and to improve the chip control regardless the insert shape by optimizing the disposition of the projection, the present invention provides a cutting tool including: an upper surface; a lower surface; a side surface; a cutting edge including a pair of major cutting edges and a corner cutting edge; a first upper surface; a second upper surface; an inclined surface; a groove disposed in the second upper surface; and a first projection and a second projection which are formed to be projected from the inclined surface. The first projection extends on the groove along the extended line, and the second projection is disposed to be linearly symmetric with respect to the extended line. At an intersection between the corner cutting edge and the bisector in a top view, L1 < L2 is established, where L1 is a distance from a virtual line intersecting perpendicularly to the bisector to a leading end of the first projection, and L2 is a distance from the virtual line to a leading end of the second projection.

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.

A cutting insert for a modular rotary cutting tool is disclosed. The cutting insert can comprise a shank, opposing insert centering surfaces, and convex torque transmission insert drive surfaces.

A nozzle (10) for providing a coolant fluid to a cutting edge of a metal cutting tool (1) and such a metal cutting tool (1), wherein the nozzle (10) comprises: - at least one internal inlet coolant channel (16 1i ; 16 2i ), - at least one internal outlet coolant channel (17 1i ; 17 2i ), wherein - the at least one internal inlet coolant channel (16 1i ; 16 2i ) is connected to a coolant inlet (18), and - the at least one internal outlet coolant channel (17 1i ; 17 2i ) is connected to a coolant outlet (19 1i ; 19 2i ) for guiding the coolant fluid to the cutting edge, wherein the nozzle (10) further comprises - a plenum (201; 202) comprising - at least one inlet opening (21 1i ; 21 2i ) connecting the at least one internal inlet coolant channel (16 1i ; 16 2i ) and the plenum (201; 202), and - at least one outlet opening (22 1i ; 22 2i ) connecting the at least one internal outlet channel (17 1i ; 17 2i ) and the plenum (201; 202), wherein - each of the at least one inlet opening (21 1i ; 21 2i ) has a cross-sectional area Ai, and - each of the at least one outlet opening (22 1i ; 22 2i ) has a cross-sectional area A2 I , wherein - wherein i is an integer, n is the number of inlet openings, and m is the number of outlet openings.

To provide a machine tool capable of changing a tool with a simple structure.SOLUTION: A machine tool 10 includes a frame 11, a hollow ram 21 reciprocatably arranged in the frame 11, and a hollow spindle 23 rotatably supported by the ram 21. The main shaft 23 includes a main shaft hole 23g disposed at a distal end portion and a spline hole 23a disposed at a proximal end portion, and the guide block 26 includes a guide hole 26b disposed inside the main shaft 23 and extending along the central axis 3 of the main shaft 23, and the main shaft drive shaft 15 rotatably supported by the frame 11 includes a spline shaft 15a meshing with the spline hole 23a and a support shaft 15b slidably guided by the guide hole 26b.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).

Vibration-damped tool holder with internal coolant supply, including: - a main body (10) comprising a first receiving chamber (11), a second receiving chamber (12) and an adjustment threaded bore (13), wherein the first and second receiving chambers (11, 12) are arranged in the main body (10) and each extend to the two ends of the main body (10), wherein the adjustment threaded bore (13) is connected to the first and second receiving chambers (11, 12); - a water supply assembly (20) arranged in the second receiving chamber (12) and integrated into the main body (10), wherein the water supply assembly (20) has a water supply pipe (22) integrated into the main body (10) and has a water inlet channel (221) connected to the second receiving chamber (12); - a collet (30) which is arranged in the first receiving chamber (11) and has a tool receiving opening (31) connected to the first receiving chamber (11); - a sleeve (60) that is placed on the main body (10); - a pressure piece (40) arranged in the first receiving chamber (11) comprising a threaded section (41) screwed into the adjusting threaded bore (13), a pressure head (43) arranged at one end of the threaded section (41) and located in the first receiving chamber (11), a connecting channel (44) arranged inside the pressure piece (40) and connected to the water inlet channel (221), and a damping chamber (45) arranged inside the pressure piece (40) and extending from the pressure head (43) to the connecting channel (44); and - a damping assembly (50) comprising a damping spring (51) and a damping element (52) which are received in the damping chamber (45), wherein one end of the damping spring (51) is supported against the pressure piece (40), wherein the damping element (52) is made of a tungsten heavy metal alloy, is supported against the other end of the damping spring (51) and comprises a water supply passage (521), wherein the water supply passage (521) is connected to the connecting channel (44).

The utility model relates to a machine tool, which comprises a main shaft used for clamping a workpiece; and a selectable portion mounted on a part of the machine tool such that the stroke of the spindle or the tailstock is not limited, the selectable portion moving to a standby position when not in use and moving to a support position when in use, depending on the type of workpiece clamped on the spindle, and the selectable portion moving to a support position when in use, depending on the type of workpiece clamped on the spindle. And the main shaft is used for selectively supporting the workpiece clamped on the main shaft.

Turning cutting tool (10), comprising: a tool body (11) comprising a flute section (18) having a plurality of helical flutes (22) separated from each other by teeth (23); and an adjustable vibration absorber arrangement (60) arranged within a cavity (25) formed in the clamping groove section (18), the adjustable vibration absorber arrangement (60) comprising at least two adjustable absorber masses (62), an elastic material (64) between the at least two absorber masses (62) and the cavity (25), and one or more connecting elements (66) arranged between the at least two absorber masses (62) to prevent a relative angular displacement between the at least two adjustable absorber masses (62) about a central longitudinal axis (12) of the rotary cutting tool (10), wherein the one or more connecting elements (66) are not in contact with the tool body (11) to allow the at least two adjustable absorber masses (62) to be held only by the elastic material (64), which enablesthat the adjustable vibration absorber arrangement (60) is set to a desired frequency in order to suppress torsional vibrations of the rotary cutting tool (10) during a cutting operation.

A balance and runout amount adjustment system 100 for a rotary tool includes a rotary tool 11 constituted of a tool holder 10 mounted on a spindle 2, a balance determining device 20 configured to obtain outer circumference position data of the rotary tool 11 and to determine a mass balance of the rotary tool 11 based on the outer circumference position data obtained, in the course of rotation of the rotary tool 11 and a runout determining device 20 configured to obtain shape data of the rotary tool 11 and to determine a runout amount of the rotary tool 11 based on the shape data obtained, in the course of rotation of the rotary tool 11. The rotary tool 11 is configured to be capable of adjustment of the mass balance based on the result of the determination made by the balance determining device 20 and capable also of adjustment of the runout amount based on the result of the determination made by the runout determining device 20.

Provided are: a shield portion (50) that covers a portion of a perforated body to be perforated by a cutting tip portion (8) of a drill bit (7) mounted on a perforating device (2); a liquid container (40) that stores a liquid; a liquid supply device (31) that forcibly supplies the liquid stored in the liquid container (40) to the cutting tip portion (8); and a liquid recovery device (35) that forcibly recovers a suspension liquid from a portion covered by the shield portion (50) and returns the suspension liquid to the liquid container (40). Thus, a liquid circulation system (30) that can circulate while appropriately suppressing backflow of the suspension liquid is provided.

A modular cutting tool (1; 40) is provided, comprising a base body (2) extending along a tool axis and a tool head (3) connected to the base body (2) via a positive-locking coupling. The positive-locking coupling is formed by meshing face teeth (4) on the base body (2) and tool head (3), each of which has a plurality of radially extending teeth (5) distributed equidistantly around the tool axis. For each face tooth (4), the end faces (7) of the teeth (5) lie on a virtual internal conical surface in the tool head (3) or base body (2) with the tool axis as the conical axis, and the end faces (7) of the teeth (5) are concavely rounded.

The invention relates to a grooving tool (10) having a cutting insert receptacle (34) which is arranged on a first of the two end faces (28, 30) of the grooving tool (10). The grooving tool (10) also has a cutting insert (14), which can be fastened detachably in the first cutting insert receptacle (34), and an internal coolant channel (48). The coolant channel (48) comprises a first channel part (50) which extends between a holder inlet opening (54), which is arranged on one of the two long sides (20, 22) of the grooving tool (10), and a holder outlet opening (56), which opens into the cutting insert receptacle (34). Furthermore, the coolant channel (48) comprises a second channel part (52) which extends in the interior of the cutting insert (14) between a cutting insert inlet opening (60) and a cutting insert outlet opening (62). The holder outlet opening (56) and the cutting insert inlet opening (60) overlap at least partially so that the first channel part (50) transitions directly into the second channel part (52) when the cutting insert (14) is fastened in the cutting insert receptacle (34).

A machine tool (10), includes: a frame (11); a hollow ram (21) disposed on the frame (11) in a reciprocable manner; a hollow spindle (23) rotatably supported by the ram (21), the spindle (23) including a spindle hole (23g) located at a distal end, and a spline hole (23a) located at a basal end; a guide block (26) disposed in the spindle (23) and having a guide hole (26b) extending along a center axis (3) of the spindle (23); and a spindle drive shaft (15) rotatably supported by the frame (11), the spindle drive shaft (15) including a spline shaft (15a) that engages with the spline hole (23g), and a support shaft (15b) disposed at a distal end of the spline shaft (15a) to be guided in sliding contact with the guide hole (26b, 126b).