244results about "Twist drills" patented technology

The present invention belongs to the technical field of composite material processing, and relates to a hole making tool for aramid fiber-reinforced plastic and a design method thereof. The drill bit has a step reversed point angle structure, which can reduce a trust force during drilling and effectively cut off a high toughness aramid fiber, thus to improve the hole making quality of an AFRP-related component. It is proved that the new tool can significantly improve the hole making quality of an AFRP component, improve the service life and safety degree, and greatly reduce the processing cost. Therefore, the present invention has a broad application prospect in the fields of aerospace, military industries and civil application.

The invention discloses a high-speed numerical control gantry vertical and horizontal drilling and milling composite machine tool, which relates to the technical field of machine tools, and comprises a horizontal machine tool, a vertical machine tool arranged in the middle of the horizontal machine tool, a connecting end arranged at the output end of the vertical machine tool, and a twist drill movably clamped at the bottom of the connecting end, the twist drill further comprises a first oil cavity arranged outside the twist drill in a sleeving mode. By means of the drilling and milling combined machine tool, the problem that when an existing high-speed numerical control gantry vertical and horizontal drilling and milling combined machine tool drills a tubular workpiece or a workpiece with a cavity, most chippings can enter the cavity in the workpiece due to the structural characteristics of a spiral groove after a drill bit drills through is solved. The chippings are distributed dispersedly, easily clamped in complex and narrow corner gaps of a cavity and difficult to clean, special tools such as a long and thin brush and a high-pressure air gun are needed, a large amount of manpower and time are consumed, and the production efficiency is reduced. And in addition, scraps accumulated in the cavity may scratch and abrade the inner surface of the workpiece, the machining quality and precision are affected, and the performance of the workpiece is damaged due to oxidation and corrosion if the scraps are left for a long time.

The invention relates to a drill bit comprising at least two end-face main cutting edges (11a, 11b), first chip surfaces (12a, 12b) adjacent to the at least two end-face main cutting edges and sloping in a first direction, first clearance surfaces (13a, 13b) adjacent to the at least two end-face main cutting edges and sloping in a second direction, a first end-face pointing by which central cutting edges (14a, 14b) adjacent to the at least two end-face main cutting edges are formed, to which second chip surfaces (15a, 15b) sloping in a third direction are adjacent, and at least one transverse cutting edge (16) extending between the at least two central cutting edges (14a, 14b). The at least two end-face main cutting edges (11a, 11b) are formed by the corresponding intersection line of the first rake faces (12a, 12b) with the first clearance faces (13a, 13b, 23a, 23b, 33a, 33b).Furthermore, the at least two main cutting edges (11a, 11b) on the end face are followed by at least two central cutting edges (14a, 14b, 24a). In addition, the drill (10) has a second end face point, which forms at least two central cutting edges (14a, 14b) in each case, to which third rake faces (17a, 17b) sloping in a fourth direction adjoin.

A method and a device for machining an elongated workpiece having a shaft extending in the direction of the workpiece longitudinal axis forms at least one groove with a defined groove surface on the workpiece by material removal by a laser beam directed with its beam axis onto the workpiece surface and guided along a laser path extending exclusively parallel to a groove profile curve corresponding to the intersection between the groove surface to be produced and a geometric plane that forms an angle β with the workpiece longitudinal axis, where 90°≥β≥the angle of groove inclination. The distance between the curve and the path is predetermined such that the workpiece material located in the geometric plane on the path side facing away from the curve completely sublimates or vaporizes due to the laser beam power density when the beam is guided along the path.

A cutting insert (10) of a rotary drill tool (1) for cutting metal comprises a head (14) and a neck extending along a longitudinal axis (12). The head has an axially forward-facing cutting region (13). At least the neck is configured for enabling releasably mounting at a support body (11). The head is formed by at least two lobes (33) each having a radially outermost envelope surface (23). Each lobe comprises a radially and axially extending torque transfer surface (17) configured for abutment contact with a corresponding torque transfer surface(29) of the support body. In a plane extending perpendicular to the longitudinal axis, the torque transfer surface has an orientation relative to the radial direction (RT) at an angle (α) in the range 15 to 45°, or 22 to 35°, or 28 to 33°, or 28 to 29°. A corresponding support body and a rotary drill tool.

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 flat drill (1) with a shank (6) and a cutting part (8) with front-side main cutting edges (16), which each extend in a plane transversely to the drill axis (3) from a cutting edge corner (22) into the drill center. The flat drill (1) has exactly three main cutting edges (16), which converge at the drill axis (3).

Twist drill bit having a cutting tip (3) with a stepped structure, consisting of a shank (1), a guide region (2) and the adjoining cutting tip (3) with a stepped structure, the stepped structure of which is interrupted by two flutes (5) winding about a drill bit axis (0), wherein the cutting tip (3) with a stepped structure has a drill bit tip (3.1) with a radius (r0), at which a pair of first main lips (4.1) are formed, and a multiplicity of coaxially arranged cutting steps (3.2), which each have a conical step portion (3.2.1), in which in each case a pair of further main lips (4.2a-4.2m) are formed, and a cylindrical step portion (3.2.2), wherein the cylindrical step portions (3.2.2) have, towards the shank (1), an increasingly large radius (ra-rm), wherein the difference between in each case one of the radii and the next one of the radii (Δr) is chosen such that, upon rotation about the drill bit axis (0), the pair of further main lips (4.2a-4.2m) arranged therebetween sweep in each case over an annular face (Aa-Am), coaxial with the drill bit axis (0), on an imaginary plane (E) arranged perpendicularly to the drill bit axis (0), and the annular faces (Aa-Am) have an identical surface area, such that, during drilling, an identical chip volume is carried away with each pair of the further main lips (4.2a-4.2m).

The utility model discloses a high-stability deep hole machining drill bit which comprises a drilling rod, the inner wall of the drilling rod is connected with two symmetrical screws in a sliding mode, threads of the two screws are arranged reversely, the lower ends of the screws are fixedly connected with first limiting blocks, and the outer walls of the screws are connected with second limiting blocks in a threaded and sliding mode and located at the tops of the first limiting blocks. The outer wall of the second limiting block is rotationally connected with a rotating block, and the inner wall of the rotating block is in threaded connection with the outer wall of the screw. The drilling rod can slide on the screws, the drilling rod can be protected through a first limiting block and a second limiting block, meanwhile, the height of the second limiting block can be controlled by rotating a rotating block, and therefore the distance between the first limiting block and the second limiting block is adjusted to be matched with the drilling depth of the drilling rod, and meanwhile threads of the two screws are opposite, so that the drilling depth of the drilling rod is adjusted. Therefore, when the rotating blocks are rotated, the positions of the second limiting blocks can be adjusted by reversely rotating the two rotating blocks, and operation is convenient.

A drill 2 extends along an axis of rotation 4 and comprises at least three main cutting surfaces 6 which, starting from a cutting corner 8 arranged on a radius (r, figure 2), each extend in the direct

The present invention relates to a drill tool for metal cutting comprising a body with a chip flute section (1), which chip flute section (1) has a central longitudinal axis (4) extending rearward from a front end to a rear end along an axial length (5) of the chip flute section (1). The chip flute section (1) comprises a plurality of axially extending chip flutes (7), and a plurality of axially extending lands (12), which each extend rotationally behind a respective one of the plurality of chip flutes (7). Each land comprises a first margin surface (13), which is located rotationally directly behind the respective chip flute (7), and a first body clearance surface (15), which is located rotationally behind the first margin surface (13). Each land (12) further comprises a second margin surface (14), which is located rotationally behind the first body clearance surface (15), wherein the first body clearance surface (15) is wave-shaped, wherein the wave-shape is formed by in the axial direction alternating radially outer crest surfaces (22) and radially inner trough surfaces (23).

The utility model relates to an edge grinding auxiliary device for a twist drill. Comprising a grinding machine, a protective cover is arranged outside a grinding wheel of the grinding machine, an edge grinding device mounting unit is arranged on the protective cover, and an edge grinding unit matched with the grinding wheel is arranged at the top of the edge grinding device mounting unit; the cutter sharpening unit at least comprises a quick-change support, a self-aligning nut is arranged at the top of the quick-change support, a rotary stud is arranged in the self-aligning nut in a penetrating manner, a twist drill bushing is arranged on the end face of the outer side of the rotary stud, and the included angle between the rotary stud and the twist drill bushing is 90 degrees; an included angle between the center line of the aligning nut and the quick-change support is 31 degrees; the inner diameter of the twist drill sleeve is 0.1 mm larger than the outer diameter of the twist drill. And the up-and-down swinging rotation angle of the twist drill bushing is 20-30 degrees. The twist drill cutter sharpening device has the advantages of being simple in structure, reasonable in design and capable of reducing operation difficulty and improving working efficiency while guaranteeing the twist drill cutter sharpening progress.

Drill (2) having a drill bit (4), - wherein the drill bit (4) has at least one main cutting edge (8) with a cutting edge (10) from which the main cutting edge (8) extends to a center (12), - wherein the drill bit (4) has at least one additional cutting edge (22) with an additional cutting edge (24) from which the additional cutting edge (22) extends in the direction of the center (12), - wherein the additional cutting edge (22) is formed only on an outer section (26) of the drill tip (4) and is therefore shorter than the main cutting edge (8), - wherein the additional cutting corner (24) projects beyond the cutting corner (10) to distribute the load between the cutting corner (10) and the additional cutting corner (24).

The invention provides a novel twist micro drill and a laser processing track design method and a processing method thereof, and relates to the technical field of super-hard twist micro drills. The laser processing track design method comprises the following steps: constructing a main cutting edge curve of the novel twist micro drill; and the main cutting edge curve consists of three sections of cutting edge curves. And obtaining an end face curve of the novel twist micro drill according to the main cutting edge curve. The end face curve is composed of a drill edge curve and a groove back curve. And filling the laser processing area to form a laser processing track by taking the end face curve as a laser processing profile. When the processing path is generated, the path description is clear, the parameters are controllable, the processing contour can be stably reproduced according to the design geometry, and the deviation between the path and the target contour is reduced.

Method and means of manufacturing ties, fasteners and rods (15) having a plurality of longitudinal threads by forcing a coil of roll-profiled feed-wire made of steel (11) through a twisting-die made of plastic (1). Also described is: a twisting-die made of plastic (1) that is suitable for twisting profiled feed-wire (11) made of steel; a method of forming a plastic twisting die (1) using an axially driven tap (31) in the form of a twisted rod (15); and a helically-shaped member (15) having lead measurements (X) along the length of the helical thread that vary less than pitch measurements (Y) along the lengths of the helical threads.

The utility model belongs to the deep hole drilling technical field especially, it is a kind of deep hole drill for machining middle axle of automobile reduction gearbox, to the existing in use, since the heat generated by drill head and hole wall friction, it is inconvenient to carry out heat dissipation, leading to drill head overheating influence processing quality problem, present and propose following scheme, including drill fixed handle, the one end of drill fixed handle is connected with drill head body, the other end of drill fixed handle is connected with water inlet pipe, the inside of drill fixed handle is equipped with cooling mechanism for cooling drill head, the one side of cooling mechanism is equipped with quick release mechanism for the disassembly of drill head. The utility model is sprayed by the water injection hole of drill head body terminal, drill head body is in hole, so that the water that sprays will pass through the chip flute on drill head body and be discharged from inside to outside, to further cool drill head body, and can flush out the impurity adhered to the outer surface of drill head body.

Provided is a spindle, a router device, and a cutting bit. The spindle may include: a spindle body having an internal space; a rotary shaft in the internal space, and having a receiving space configured to receive one end of a cutting bit, the cutting bit including a plurality of fastening portions spaced apart from each other in a longitudinal direction of the cutting bit and a plurality of cutting portions disposed between the plurality of fastening portions and configured to cut a substrate; and a support head at one end of the spindle body, and including a collet connected to one end of the rotary shaft and configured to selectively fasten at least one fastening portion among the plurality of fastening portions.

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.

The cutting tool component includes a cutting portion (38). The cutting tool component further includes a plurality of guide pads (56) projecting radially outward from the cutting portion. At least the cutting portion and the plurality of guide pads are manufactured by additive manufacturing, and the plurality of guide pads are integrally formed with the cutting portion in a unitary, one-piece construction. A rotary cutting tool is provided having a cutting insert removably attached to the cutting tool component.

The invention relates to the technical field of drill bits, in particular to an auger bit with a cutter handle lengthening structure, which comprises a drilling machine, a mounting head is rotatably connected to the drilling machine, a lengthening cutter handle is mounted on the mounting head, a fixing ring is sleeved on the drilling machine, fixing rods are fixedly connected to two sides of the fixing ring, and the cutter handle lengthening structure is mounted on the fixing rod. According to the device, a to-be-drilled area is pre-blown and cleaned through the air blowing piece, the multi-section telescopic rod and the spray head, the drilling centering precision of the twist drill is guaranteed, the blowing state of the spray head can be automatically switched along with drilling operation, chippings generated during drilling are laterally blown away, the drilling efficiency is improved, and the drilling efficiency is improved. And meanwhile, through linkage of a rack, a gear and other mechanisms, a large hole replaces a small hole to be communicated with the channel, self-adaptive adjustment of air outlet intensity increase during drilling deepening is achieved, the cutter burning and chip blocking faults caused by chip accumulation are effectively avoided, and the requirements for reinforced chip removal and cooling under the deep hole working condition are met.

The present invention relates to a drill bit and a method of manufacturing a perforated article. In the case where the rigidity of the main shaft of a perforating machine is sufficient, it goes without saying, but even in the case where perforation is performed using a hand-held tool rotation device or the rigidity of the main shaft of the perforating machine is low, a workpiece composed of a composite material or a metal or the like can be perforated with high accuracy. The drill bit of the embodiment has a first cutting edge formed on the leading end side in such a manner that the leading end angle is continuously or discontinuously reduced from the leading end side to the trailing end side, and on the other hand, the clearance angle is continuously or discontinuously reduced from the leading end side to the trailing end side, and is used to perforate a workpiece to form a pilot hole; a second cutting edge formed by being positioned away from the first cutting edge toward the trailing end side, and used to perform finishing of the pilot hole, and having a clearance angle at the maximum diameter position; and a vibration-damping portion formed between the first cutting edge and the second cutting edge, and reducing vibration of the second cutting edge by being inserted into the pilot hole processed by the first cutting edge.

A drill bit of an undefined aspect of the present invention has a rod-shaped body extending along an axis of rotation from a front end toward a rear end. The main body has an outer peripheral surface that is located at a position sandwiched between the first discharge groove and the second discharge groove and that extends from the flank surface toward the rear end. The outer peripheral surface has a front land surface extending along the first discharge groove, a rear land surface extending along the second discharge groove, and a clearance surface located at a position sandwiched between the front land surface and the rear land surface. The ridge lines of the rear land surface and the flank surface extend forward in the rotational direction toward the rear end. The ridge line has a convex curve portion that includes an end portion of the ridge line positioned forward in the rotational direction and that protrudes forward in the rotational direction.

A one-piece cutting head for a drill bit includes a main cutting edge that extends between radial extremities of the cutting head. The main cutting edge is disposed between main rake surfaces and main relief surfaces. Each main rake surface includes one or more rake facets, and each main relief surface includes one or more relief facets. Adjacent rake facets and relief facets define a primary transverse edge therebetween that extends away from the main cutting edge. The cutting head further includes a plurality of side cutters that are transverse to the main cutting edge and that propagate from the primary transverse edge to a radial extremity of the cutting head. Each side cutter includes a side cutting edge between a side cutting rake facet and a side cutting relief facet.

The utility model discloses an anti-fracture high-speed steel straight-shank twist drill which comprises a drill handle and a spiral drill bit, the drill handle and the spiral drill bit are integrally arranged, the drill handle and the spiral drill bit are both made of high-speed steel materials, and a liquid drainage channel is formed in the center of the drill handle and the center of the spiral drill bit. A first liquid outlet and a second liquid outlet are formed in the end of the spiral drill bit, the first liquid outlet and the second liquid outlet are both communicated with the liquid discharging channel, and a reinforcing assembly used for reinforcing the twist drill is arranged on the outer side of the drill handle and the outer side of the spiral drill bit. According to the anti-fracture high-speed steel straight-shank twist drill, cooling liquid can be discharged from the chip removal groove, cuttings can be brought out through the cooling liquid, the chip removal efficiency is improved, meanwhile, a spiral groove is formed in the side edge of the spiral drill bit, a second liquid outlet is formed in the spiral groove and communicated with a liquid discharging channel, the discharged cooling liquid flows through the spiral groove, and the cutting efficiency is improved. And the first liquid outlet is matched, so that the cutting part of the drill bit can be effectively cooled, and the anti-fracture effect of the straight-shank twist drill is improved on the whole.

The utility model relates to related technical field of flexible polishing equipment especially, a kind of flexible vibration polishing device of twist drill edge passivation treatment, including stand, the upper end fixed mounting of stand workbench, the lower surface of workbench is fixedly installed with spring at equal intervals, the lower end of spring is fixedly connected with connecting ring, the lower surface both sides of connecting ring are fixedly installed with vibration motor, the inner ring of connecting ring is fixedly installed with polishing barrel.This flexible vibration polishing device of twist drill edge passivation treatment, by vibration motor drive polishing barrel vibration, in combination in the polishing barrel is put into the quantitative flexible abrasive, the realization even passivation of edge, improve edge sharpness and wear resistance, by the cooperation of first adjusting plate second adjusting plate and clamping plate, different sizes of twist drill can be adapted, improve the versatility of device, by the cooperation of moving platform and guide rail, the continuous polishing of multiple groups of twist drill can be realized.

A cutting tool with a replaceable cutting head and a method for securing the replaceable cutting head are disclosed. The rotary cutting tool includes a tool shank, a replaceable cutting head mounted on the tool shank, a coupling pin, and an actuating member. In one embodiment, the coupling pin has a cylindrical portion with a reduced diameter portion defined by a pair of angled sidewalls separated by a bottom surface for cooperating with a non-threaded portion at one end of the actuating member. In another embodiment, the coupling pin has a cylindrical portion with a notch having a pair of sidewalls for cooperating with a truncated conical member at one end of the actuating member. During assembly, a pair of V-shaped contact surfaces on the cutting head engage a pair of opposing V-shaped contact surfaces on the tool shank to provide stability against momentum generated by cutting forces in two different directions and to securely hold the cutting head in place during machining operations.

A drill bit based on an aspect of the invention not limited has a body extending along an axis of rotation from a first end toward a second end. The body has an outer peripheral surface, a cutting edge located on the first end side, a relief surface disposed along the cutting edge on a rear side in a direction of rotation of the axis of rotation, and a flute extending from the cutting edge toward the second end. The cutting edge has a first land, a second land extending from the first land toward the outer peripheral surface, and a third land extending from the second land toward the outer peripheral surface. The relief surface has a first relief surface disposed along the first land and having a first relief angle, a second relief surface disposed along the second land and having a second relief angle, and a third relief surface disposed along the third land and having a third relief angle. The second relief angle is smaller than the first relief angle and the third relief angle.

According to the efficient and high-strength three-groove type drilling and milling twist drill, a drilling part is provided with three sets of front tool faces and rear tool faces, arc tool faces are arranged on the connecting edges of the front tool faces and the rear tool faces of each set in a groove mode, a sawtooth part is a spiral guide part of a drill body and comprises spiral grooves and auxiliary cutting edges, and the spiral grooves are matched with the auxiliary cutting edges. A plurality of sawteeth are arranged on the auxiliary cutting edges at equal intervals, the section shapes of the portions, on the two sides of the spiral groove, of the lead core are gradually-enlarged inclined slopes, the arc cutter face is arranged between the front cutter face and the rear cutter face, so that the chip removal angle is effectively increased, the arc cutter face is matched with the three-groove type spiral groove, and the chip removal efficiency is improved. The whole cutting efficiency and chip removal efficiency can be effectively improved, the multiple sawteeth are arranged on the auxiliary cutting edges, the side face milling function can be achieved, and therefore the multifunctional twist drill is achieved.

A cutting head has two radially extending cutting arms, and at least one fastening recess having an opening at least partially on one of the cutting arms. Each cutting arm has a dovetail-shaped arm rear abutment surface. The tool holder (24) has two drive members spaced apart in the circumferential direction. The tool holder has a cavity with two radially extending arm receiving receptacles. Each of the receptacles has a dovetail receptacle rear abutment surface. The tool holder has at least one through hole in one of the drive members. During assembly, a fastening member (26) is disposed in the through bore and engages the fastening recess to urge each cutting arm towards a respective drive member.

The invention relates to the technical field of drilling, in particular to an auger bit with an adjustable mounting structure, which comprises a power transmission shaft, the end part of the power transmission shaft is fixedly connected with a mounting base, the inner wall of the mounting base is rotatably provided with a second rotating ring, and the second rotating ring is fixedly connected with a screwing ring seat; the outer wall of the screwing ring seat is rotationally sleeved with a front-end metal ring sleeve, the outer wall of the front-end metal ring sleeve is fixedly connected with a cooling liquid buffering frame, a second rotating ball slides along the circumference of the inclined face and can do up-down reciprocating motion, and at the moment, the second rotating ball drives a guide rod, a first rotating ball and a guide cover to do up-down reciprocating motion synchronously; the guide cover swings around the rotating rod in a reciprocating mode, reciprocating opening and closing are achieved, and at the moment, cooling liquid sprayed outwards from the fixing pipe is guided by the reciprocating opening and closing direction of the guide cover and sprayed to different height positions of the auger bit body for cooling.