41 results about "Hole saw" patented technology

A hole saw is provided that includes a mandrel, a body, and a plurality of blade assemblies slidably mounted on the body. The hole saw has an adjustable size such that a user can vary the pitch of the blade assemblies to adjust the size (e.g., diameter) of the hole cut by the hole saw. In some embodiment, the body includes a plurality of pairs of wings, and each blade assembly is slidably mounted on a pair of wings of the plurality of pairs of wings. When a first blade assembly of the plurality of blade assemblies moves along its respective pair of wings, a first wing of each of the plurality of pairs of wings rotates and the other blade assemblies move along its respective pair of wings.

An arbor for a hole saw. The arbor includes an arbor stem having at least one arm with a threaded portion configured to engage the hole saw. The arbor further includes an actuator rotatable to move the at least one arm and a body mounted to the actuator. The body has a channel that receives the at least one arm. Moreover, the arbor includes at least one magnet positioned within the at least one arm.

The present invention provides a lifting device for horizontal members that allows for lifting and unlifting of horizontal members by attaching and detaching the lifting hooks to the horizontal member, which has a main surface without lifting fittings arranged horizontally. [Solution] The horizontal member lifting device 10 of the present invention comprises a lifting body 12 that can be lifted and transported by a crane, A hole saw 26 is attached to the lifting body 12 and extends toward a horizontally positioned horizontal member, on which one main surface of the lifting body sits, to drill a hole in the one main surface. The invention is characterized by having a locking mechanism 30 positioned around the rotation axis of the hole saw 26, in which, after drilling with the hole saw 26, the locking body 32, which is reduced in diameter toward the axis of the insertion hole as the hole saw 26 extends, is inserted from one main surface, and after penetration, the locking body 32 expands in diameter and locks onto the other main surface.

An arbor for a hole saw an arbor stem, an actuator, and at least one post. The arbor stem includes at least one arm having a threaded portion configured to engage the hole saw. The actuator is rotatable about a central axis of the arbor to move the at least one arm. The actuator includes a surface facing the at least one arm and a track. The track is recessed from the surface of the actuator. The at least one post extends from the at least one arm to engage the track. The arm is movable in a radial direction in response to rotation of the actuator to vary a circumference of the arbor stem.

This utility model relates to the field of hole saw technology, and more particularly to a hole saw with self-cleaning function. It includes a hole saw body, a guide rod, a push plate, a return spring, and a sliding mechanism. At least three guide holes are evenly distributed on the upper surface of the hole saw body. A guide rod is slidably disposed within each guide hole, with its direction parallel to the axial direction of the hole saw body. The bottom end of the guide rod is connected to a push plate, which is located within the hole saw body. A return spring is wound around the outside of the guide rod. The push plate can move under the action of the return spring to push out and clean debris from within the hole saw body. After the hole is drilled, the workpiece debris detaches from the workpiece. At this time, the push plate, under the action of the return spring, drives the contact plate and sliding plate to move, pushing the workpiece debris out of the hole saw body. This achieves a self-cleaning function, making the hole drilling operation simpler and faster.

The utility model belongs to the technical field of wall tapping tools, in particular to a wall tapper convenient for replacing a drill bit, which comprises a central drill bit and a circular hole saw, and further comprises a regular hexagonal fixing sleeve and a locking assembly, and the locking assembly comprises a locking pressing block, a fixing frame and a threaded column; a regular hexagonal fixing sleeve is fixed to the center drill bit, a regular hexagonal through hole allowing the regular hexagonal fixing sleeve to penetrate through is formed in the circular hole saw, a plurality of fixing frames are fixed to the circular hole saw at equal intervals in the circumferential direction, and threaded columns are installed on the fixing frames in a threaded screwing mode. According to the wall tapper, the regular hexagonal fixing sleeve penetrates through the regular hexagonal through hole to position the installation position of the center drill bit, the threaded column is rotated, the threaded column pushes the locking pressing block to be embedded into the locking groove to be locked under the screwing effect of threads, and the installation stability of the center drill bit is greatly improved; and meanwhile, the center drill bit is easy to disassemble and replace, and the use convenience is improved.

A hole saw movable about a rotational axis in a cutting direction to cut into a workpiece. includes a cylindrical body having a sidewall with a first end and a second end opposite the first end, and a gullet extending through the first end of the cylindrical body. The gullet includes a first linear surface extending parallel to the rotational axis, a second linear surface extending parallel to the rotational axis, and a third linear surface extending from the first linear surface toward the second linear surface, the third linear surface oriented oblique to the rotational axis. The cylindrical body also includes a cutting tooth coupled to the first end of the sidewall adjacent the gullet, and an end cap coupled to the second end of the sidewall.

To provide an electric tool system that can reduce kick-back.SOLUTION: An electric tool system 100 comprises an electric tool body 1, and a transmission mechanism 2. The electric tool body 1 has an output shaft 12 which is rotated power of a motor. The transmission mechanism 2 transmits rotation of the output shaft 12 to a hole saw A1. The transmission mechanism 2 has a planetary gear 213, and a drill part 4. The planetary gear 213 rotates in linkage with rotation of the output shaft 12 in the state that a position thereof relative to the output shaft 12 is fixed. The drill part 4 rotates integrally with the planetary gear 213. The drill part 4 contacts a work object X1 before the hole saw A1 contacts the work object X1.SELECTED DRAWING: Figure 1

This product is a buried pipe window-opening tool with a peeling section, used in conjunction with a hole saw to create a window on the side of a buried pipe that houses electrical wires or the like to check the condition inside. As shown in the "Reference Perspective View Showing Usage," the cylindrical part of this product is fitted into an annular cutting groove that has been pre-cut to a half-depth of the pipe thickness using a hole saw. Then, by swinging the gripping side of this product, in which the cylindrical part is fitted, along the longitudinal direction of the buried pipe, a crack can be created in the thin remaining portion of the groove bottom around the core formed inside the cutting groove. The peeling section at the rear end of this product can be inserted into the crack around the core, and the core can be separated from the buried pipe by levering or other means.

The utility model relates to the field of tappers, in particular to a tapper connecting rod. A tapper connecting rod comprises a base, an outer cutting knife connected to the base, a drilling assembly installed on the inner side of the base and a knife lock assembly located on the outer side of the base and used for locking the outer cutting knife, and a threaded hole used for being in threaded fit with the base and a positioning hole located in the side face of the threaded hole are formed in the outer cutting knife. The cutter lock assembly comprises a positioning piece arranged on the base in a sleeving mode and a cutter lock housing rotationally connected with the base, the positioning piece comprises a positioning column penetrating through the base to be inserted into the positioning hole, and the cutter lock housing is in threaded fit with the positioning piece. When the outer cutter needs to be replaced, the cutter lock housing is rotated, and the positioning piece in threaded fit with the cutter lock housing cannot rotate freely due to limitation of the positioning column and the positioning hole, so that the positioning piece moves downwards. And when the positioning column is separated from the positioning hole, the outer cutting knife can be screwed off and replaced by a new outer cutting knife.

This invention is an improvement to the hole-cutting saw that is currently widely available in the market. A tiny cutting blade attached to the bottom inner wall of the hole saw to help shave out diameter of the cutout plug, and cone shaped pilot drill bit to reduce the friction between cutout plug and pilot drill bit. End result is the quick, easy separation of cutout plug from hole saw.

A device is for an axial displacement of a hole saw for a hand-held drill, wherein the hole saw is coupled to the drill by a drive shaft, and the hole saw and an actuator are rotatably connected and positioned in a housing with a coupling for the drill. The actuator has an outer threaded portion which corresponds to an inner threaded portion in the housing so that the actuator and the hole saw are displaced axially along the drive shaft when the actuator rotates relative to the housing. The actuator is connected to the drive shaft via a slip clutch arranged to transfer and reduce a reduced torque from the drive shaft to the actuator.

A hole saw breaching firefighting nozzle may comprise outer and inner housings, a diffuser assembly, hole saw assembly, and drivetrain assembly. The inner housing may be concentrically disposed within the outer housing to create an annular flow region. The diffuser assembly may comprise an end cap coupled to an upstream end of the outer housing. An orifice plate may be coupled to the end cap via linear bearing shafts. A flow control ring may slide forward or rearward between the orifice plate and end cap via linear bearing shafts to control fluid flow communication between the orifice plate and annular flow region. The drivetrain assembly may rotatably couple to the orifice plate. The hole saw assembly may operably couple to the drivetrain assembly. The inner housing may slide forward and rearward. The downstream end of the drivetrain assembly may be in fluid communication with the annular flow region.

A cutting tool includes a hole saw, a pilot bit, and an arbor assembly. The arbor assembly includes a shank, a body, a first engagement member moveable relative to the shank, the first engagement member engaging the hole saw to releasably secure the hole saw to the shank, and a second engagement member moveable relative to the shank, the second engagement member engaging the pilot bit to releasably secure the pilot bit to the shank. The body is moveable to a first position where the hole saw and the pilot bit are secured to the arbor assembly, to a second position where the first engagement member disengages the hole saw, allowing removal of the hole saw from the shank, and to a third position where the second engagement member disengages the pilot bit, allowing removal of the pilot bit from the shank.

A hole saw having an internal saw with a circular sidewall including a working end including teeth and a backwall connected to the sidewall. The backwall includes an aperture concentrically located with respect to the circular sidewall for receiving a pilot drill designed to extend beyond the working end of the circular sidewall. The hole saw also has an external saw with a circular sidewall with a greater diameter than the circular sidewall of the internal saw. The circular sidewall of the external saw has teeth and an oppositely located proximal end that includes tangs separated by notches. A base plate is fastened to the circular sidewall of the external saw. The base plate includes a plurality of apertures for fixing the base plate to the backwall of the internal saw and locating the circular sidewalls concentric with respect to each other.

The utility model relates to a rope saw side face supporting telescopic mechanism of a hole mining sawing machine, which comprises a sawing arm rod located on the side face of a machine frame of the hole mining sawing machine, the sawing arm rod is connected with the machine frame through a telescopic arm, and an electronic ruler located on the side of the telescopic arm is connected between the sawing arm rod and the machine frame. According to the rope saw side face supporting telescopic mechanism of the hole mining sawing machine, the electronic ruler located on the side of the telescopic arm is connected between the sawing arm rod and the rack, when the telescopic arm drives the sawing arm rod to conduct telescopic adjustment, the electronic ruler (namely a linear displacement sensor) synchronously stretches out and draws back, the specific stretching amount can be accurately detected, and the working efficiency is improved. The telescopic adjusting amount of the sawing arm rod can be accurately controlled, and the adjusting precision of the sawing arm rod is improved.

The purpose of the present disclosure is to provide a power tool system capable of reducing kickback. A power tool system (100) comprises: a power tool body (1); and a transmission mechanism (2). The power tool body (1) has an output shaft (12) that rotates by the motive power of a motor. The transmission mechanism (2) transmits the rotation of the output shaft (12) to a hole saw (A1). The transmission mechanism (2) has a planetary gear (213) and a drill unit (4). The planetary gear (213) rotates in conjunction with the rotation of the output shaft (12) in a state in which the relative position with the output shaft (12) is fixed. The drill unit (4) rotates integrally with the planetary gear (213). The drill unit (4) comes into contact with a work target (X1) before the hole saw (A1) comes into contact with the work target (X1).

A hole-saw, including a sidewall and an endcap, is provided. The endcap includes projections that fit within notches of the sidewall to form a brazed or welded joint that couples the endcap to the cylindrical sidewall. The projections extend through the notches and are brazed or welded to the base of the sidewall. The endcap couples to the sidewall to form a cylindrical hole saw body. The endcap rotates and supports the hole-saw during operation.

A trephine is provided. The trephine includes a hole saw sized to accommodate an implant, the hole saw having: a cylindrical body having a proximal end, a distal end and an outer surface, a plurality of circumferentially spaced cutting teeth at the distal end of the cylindrical body, and a plurality of helical grooves on the outer surface of the cylindrical body; and a quick connect coupled to the proximal end of the cylindrical body for releasably connecting to a cooperating quick connector of a tool.

1. The name of the design product: hole saw bit (four). 2. The use of the design product: the design product is used as a kind of electric tool accessory for cutting objects. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: front view.

An arbor for a hole saw has a shank having an internal chamber therein, a spring situated within the internal chamber, and a plunger configured to compress the spring, when under pressure, within the internal chamber, the plunger having a drill bit receiving slot. As a user applies force to the pilot drill bit extending from the plunger, the applied pressure forces the plunger into the internal chamber, compressing the spring. Once the pressure on the pilot drill bit is released, such as when the core is freed from surrounding material, the spring extends, forcing the plunger from the internal chamber and thereby forcing the core from the surrounding material and / or hole saw. In some examples, a release mechanism may be included to control the release of the plunger from the internal chamber.

A cutting tool may include a cutting accessory defining an opening and a channel formed on an inner surface of the cutting accessory. A cutting tool may include an arbor assembly including a shank having a first end received in the opening of the cutting accessory and a second end configured to be coupled to a power tool, a body movable relative to the shank, and an engagement member movable with the body relative to the shank, the engagement member configured to selectively engage the channel of the cutting accessory to releasably secure the cutting accessory to the shank.

A cutting tool may include a hole saw adapter configured to be coupled to a hole saw, the adapter comprising a first section, a second section opposite the first section, and a flange between the first and second sections, the first section comprising a threaded outer surface to receive the hole saw, and the second section comprising a polygonal outer surface.A cutting tool may comprise a receiving mandrel assembly comprising a coupling body defining a bore that receives the second section of the adapter, a shank extending from the coupling body and configured to be coupled to a power tool, a sleeve movable relative to the coupling body, and a retaining element positioned between the sleeve and the coupling body, the retaining element engaging with the second section of the adapter to detachably secure the adapter to the receiving mandrel assembly.

The utility model discloses a special inner hole saw blade detection tool, which comprises a detection table, the periphery of the upper surface of the detection table is annularly and uniformly provided with sliding chutes, the sliding chutes are internally provided with sliding rails, the sliding rails are slidably connected with sliding blocks, the tops of the sliding blocks are fixedly connected with detection columns, and the detection columns are fixedly connected with the detection table. A rotating shaft is rotatably connected to the center of the inner bottom wall of the detection table, a rotating disc is fixedly connected to one side of the outer side wall of the rotating shaft, arc-shaped limiting grooves are annularly and uniformly formed in the periphery of the upper surface of the rotating disc, and limiting columns matched with the arc-shaped limiting grooves are fixedly connected to the bottoms of the sliding blocks; a driving assembly for driving the rotating shaft to rotate is arranged in the detection table; according to the utility model, through cooperation of the detection bench, the slide groove, the slide rail, the slide block, the detection column, the rotating shaft, the rotating disc, the arc-shaped limiting groove, the limiting column and the driving assembly, sizes of inner holes of different saw blades can be rapidly and accurately measured, and the measurement efficiency is effectively improved.

This invention provides the means for construction crews to easily drill through multiple beams or soffits with the use of a hole saw that is coupled to a first drive cup using a coupling arbor. The first drive cup is attached to a first end of an extension tube and is secured using self-tapping screws. A second drive cup is attached to a second end of the extension tube with self-tapping screws where a drive coupling arbor provides a hexagonal shank that is attached to a drive device, such as a hammer drill or standard drill. When activated the rotational motion allows the hole saw to cut through the beams or soffits. A pilot bit is provided to guide the hole saw into the beams or soffits when in use.

The application discloses a kind of superhard alloy hole saw heat treatment equipment and process, the present application relates to heat treatment technical field.The superhard alloy hole saw heat treatment equipment and process, including heat treatment pool, the inside of heat treatment pool is provided with cleaning assembly, the outside of heat treatment pool is provided with switching component, auxiliary assembly, the cleaning assembly includes support rod, fishing net, shovel plate, winding wheel, rotating rod, one end of support rod is installed on the outer wall of fishing net, the outer wall of fishing net is connected with the outer wall of shovel plate, the outer wall of shovel plate is connected with the inner wall of heat treatment pool, the inner wall of winding wheel is installed on the outer wall of rotating rod, the outer wall of rotating rod is installed on the outer wall of shovel plate by locating plate, the removal effect of the impurity deposited in the bottom of pool is better and more sufficient, effectively reduce the impurity content in cooling oil, to enhance the heat treatment effect of superhard alloy hole saw, simple and convenient easy to operate.

An arbor for a hole saw has a shank having an internal chamber therein, a spring situated within the internal chamber, and a plunger configured to compress the spring, when under pressure, within the internal chamber, the plunger having a drill bit receiving slot. As a user applies force to the pilot drill bit extending from the plunger, the applied pressure forces the plunger into the internal chamber, compressing the spring. Once the pressure on the pilot drill bit is released, such as when the core is freed from surrounding material, the spring extends, forcing the plunger from the internal chamber and thereby forcing the core from the surrounding material and / or hole saw. In some examples, a release mechanism may be included to control the release of the plunger from the internal chamber.

The utility model provides hole saw forming equipment, and relates to the technical field of hole saw manufacturing. A vertical plate is welded to the rear end of the inner mold column, a pushing spring is welded to the front side face of the vertical plate, a pushing barrel is welded to the front end of the pushing spring, a pushing frame is welded to the lower side face of the pushing barrel, and a pushing barrel is slidably connected to the outer side face of the inner mold column. The hydraulic cylinder is connected to the upper side face of the bottom plate through a bolt and connected with the hydraulic oil supply station through an oil pipe, the top end of a telescopic rod of the hydraulic cylinder is provided with a downward pressing frame, and the upper side face of the downward pressing frame is connected with a downward pressing block through a bolt. Through the arrangement of the hydraulic cylinder, the pressing frame, the pushing spring and the pushing cylinder, automatic demolding and part taking work after hole saw forming is achieved, the production efficiency of the hole saw is improved, and the problem that after saw blades of a traditional hole saw pressing forming machine are pressed and formed, the surfaces of inner mold columns are tightly wrapped with high-temperature saw blades, and consequently manual part taking operation is inconvenient is solved.

The present invention provides a quick change arbor, which can realize quick replacements of tools such as drill bit, hole saw and batch head on electric drills. The quick change arbor comprises an arbor main body, a pulling ring and a locking part. In the present invention, the tool is positioned and installed in an assembling position through the arbor main body, and the locking part within the first guiding groove abuts against the surface of the tool, so that the tool is tightly locked within the assembling position, thus to effectively eliminate the gaps occurred after the tool is assembled.

A cutting tool may include a hole saw adapter configured to couple to a hole saw, the adapter including a first portion, a second portion opposite the first portion, and a flange between the first and second portions, the first portion including a threaded outer surface that receives the hole saw, the second portion including a polygonal outer surface. A cutting tool may include an arbor assembly including a coupler body defining a bore that receives the second portion of the adapter, a shank extending from the coupler body and configured to be coupled to a power tool, a sleeve moveable relative to the coupler body, and a retaining member disposed between the sleeve and the coupler body, the retaining member engaging the second portion of the adapter to releasably secure the adapter to the arbor assembly.