347results about "Twist drills" patented technology

A holesaw assembly can include a holesaw, a pilot drill, an arbor, and a retainer. The holesaw can include a base and a cylindrical wall coupled to the base. The cylindrical wall terminates away from the base in a cutting edge and defines an internal space. The drill bit can include a cutting tip and an elongate shaft portion. The arbor can include a first portion configured to be couplable with a tool holder of a power tool and a second portion configured to be coupleable with the holesaw. The arbor can be configured to receive the drill bit and facilitate movement of the drill bit between an extended position and a retracted position relative to the arbor while the drill bit remains coupled to the arbor. The cutting tip is closer to the first portion of the arbor in the retracted position than in the extended position. The retainer can be configured to selectively maintain the drill bit in the retracted position. Release of the retainer can allow movement of the drill bit from the retracted position toward the extended position.

The utility model provides a twist drill coping device with high efficiency and accurate positioning, and belongs to the field of alloy cutter coping machining. The problems that certain dangerousness exists in existing auger bit coping, the coping yield is uncontrollable, and the coping efficiency is difficult to improve are solved. The drilling machine comprises a platform, a grinding wheel mechanism, a walking mechanism and a drill bit clamping mechanism, the grinding wheel mechanism, the walking mechanism and the drill bit clamping mechanism are all arranged on the platform, the grinding wheel mechanism is arranged at one end of the walking mechanism, the drill bit clamping mechanism is arranged on the walking mechanism, and the walking mechanism comprises a lead screw, a linear guide rail, a sliding table and a circular truncated cone face. The grinding wheel mechanism comprises a grinding wheel mounting frame, a servo motor and a grinding wheel, and the drill bit clamping mechanism comprises a drill bit clamping tool and a clamping tool mounting seat. The auger bit grinding device is mainly used for grinding an auger bit.

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.

To provide a drill which can enhance abrasion resistance, thereby can extend the life of a tool.SOLUTION: A thinning edge, a main cutting edge and a leading edge have a honing H having a projecting curve-shaped cross section vertical to each ridge line part, in the cross section, among both ends h1 and h2 of the honing H, a surface connected to a first end h1 is defined as a first surface 101, a surface connected to a second end h2 is defined as a second surface 102, a distance between the first end h1 and an intersection P between the extended line of the first surface 101 and the extended line of the second surface 102 is defined as a first width dimension L1, a distance between the second end h2 and the intersection P is defined as a second width dimension L2, [L1 / L2] is defined as a width ratio, as for the thinning edge and the main cutting edge, the first surface 101 is defined as a rake surface, the second surface 102 is defined as a rake surface, and the width ratio of the thinning edge is larger than the width ratio of the radial outer end connected to an outer peripheral corner in the main cutting edge.SELECTED DRAWING: Figure 5

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).

The twist drill comprises a cutter handle and a cutting part, the cutting part is provided with a plurality of long spiral chip grooves and guide edge strips which extend towards the cutter handle in the direction of the central axis of the twist drill, the front ends of the long spiral chip grooves are provided with main cutting edges and chisel edges, and the side portions of the long spiral chip grooves are provided with taper milling areas. The taper milling area comprises a plurality of blade sections, taper spiral long blades, taper spiral short blades and short spiral chip grooves are arranged on the blade sections, the short spiral chip grooves and the long spiral chip grooves have the same rotation direction, the taper spiral long blades comprise N groups of micro milling blades which are connected in series along the spiral direction of the taper spiral long blades, the taper spiral short blade comprises N groups of micro-milling blades which are connected in series in the spiral direction of the taper spiral short blade, and the condition that N is larger than or equal to 2 is met, and the micro-milling blades are provided with chip dividing grooves with the spiral direction opposite to that of the long spiral chip discharging grooves, and the composite material drill bit has the advantages of being capable of being used for composite material drilling machining, high in drilling efficiency, high in machining precision, good in quality and the like.

A method of manufacturing a drill bit includes providing a piece of bar stock having a first end, a second end opposite the first end, and an axis of rotation extending centrally through the bar stock between the first and second ends, cutting the first end of the bar stock to form a first tip angle at an oblique angle measured through the axis of rotation, cutting the first end of the bar stock at a second tip angle measured through the axis of rotation to form first tip surfaces and second tip surfaces. The first tip surfaces have the first tip angle and the second tip surfaces have the second tip angle. The second tip angle is smaller than the first tip angle. Finally forming a flute in the bar stock between the first and second ends and forming a shank at the second end of the bar stock.

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).

A rotary cutting tool comprising a tool body (2) and a cutting head (30) with a coupling portion (31) receivable between two axially projecting coupling legs (12) on the tool body. Internal clamping surfaces (14) on the coupling legs are designed for press fit engagement with cylindrical external clamping surfaces (34) on the cutting head. Each internal clamping surface is conical and inclined at a small angle outwards away from the centre axis of the tool body as seen in a direction from an upper edge to a lower edge of the internal clamping surface, or divided into a cylindrical first sub surface (14a) and a conical second sub surface (14b) that is located axially rearward of the first sub surface and inclined at a small angle outwards away from the centre axis of the tool body as seen in a direction from an upper edge towards a lower edge of the conical second sub surface.

A carbon-based coating for a tool surface. The carbon-based coating sequentially comprises, from a tool surface to the outside, a high-content sp3 bond carbon layer, a gradient layer, and a high-content sp2 bond carbon layer, wherein the high-content sp3 bond carbon layer has an sp3 bond content of 50-80%, the high-content sp2 bond carbon layer has an sp2 bond content of 50-80%, and the sp3 bond content in the gradient layer decreases from high to low from the inside to the outside. In the carbon-based coating, a carbon layer mainly comprising an sp3 bond and a carbon layer mainly comprising an sp2 bond are separately provided, the former provides high hardness and wear resistance, and the latter has a low friction coefficient and good lubricity; the carbon-based coating has a gradient layer between the two carbon layers, so that a gradual transition is achieved between the properties of the two layers, avoiding the problem of poor bonding, improving stability, reducing the internal stress in the coating, avoiding the risk of easy breakage, achieving high thickness deposition.

The utility model discloses a multifunctional punching drill bit for composite materials, which relates to the technical field of punching drill bits and comprises a drill body, a connecting end is fixedly mounted at one end of the drill body, a tool bit is fixedly mounted at the other end of the drill body, and a scrap cleaning mechanism is arranged on the side wall of the drill body. The chip removing mechanism comprises a mounting frame and a plurality of blades, the mounting frame is fixedly mounted on the side wall of the drill body, the blades are fixedly mounted on the side wall of the drill body, and vent holes are formed in one side of the mounting frame; according to the technical scheme provided by the utility model, the scrap cleaning mechanism is adopted, when the drill body rotates, the blades can be driven to rotate, so that airflow can be driven to blow away powdery scraps around the hole, the hole can be conveniently observed by punching personnel, meanwhile, the step of manual cleaning is omitted, and the punching efficiency is higher.

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.

The present disclosure relates to technical field of woodworking drills, and in particular to a woodworking drill including: a cutter body; wherein an outer side wall of the cutter body defines a plurality of chip discharge slots that are spirally disposed, and the plurality of chip discharge slots are disposed circumferentially about a center axis of the cutter body; a cutter shank, connected to an end of the cutter body; and an alloy main drill structure, arranged at another end of the cutter body back away from the cutter shank; wherein a plurality of secondary cutting edges are formed on the outer side wall of the cutter body by the plurality of chip discharge slots, and the alloy main drill structure is configured for main drilling wood.

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 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 invention relates to a masonry drill bit (10) comprising a shaft section (12) on which is formed at one end a shank section (16) for connection to a tool fitting of a power drill and at the other end a drill bit head (18) for working on a substrate. The drill head (18) has at least one blade (20) which, at the outer end thereof, has a projection (22) which points tangentially to the longitudinal axis (L) in a direction away from the blade (20). The masonry bit (10) has a high removal capability and a low risk of jamming.