223results about How to "Fast drilling" patented technology

A modular kerfing rock drilling bit (10) is presented. Drill bit (10) comprises a bit body (12) having a connection (14) for attachment to a drill string member. A base portion (16) below the connection (14) has an outer portion (18) and a bottom (20). Slots (22) are formed in the base portion (16). A cutter assembly (100) comprises a leg (110) insertable into the slot (22) of the bit body (16). A journal (126) extends angularly downward and inward from the leg (110) for bearing support of a cone (180) rotatably mounted on the journal (126). A plurality of cutters (182) extend outward from the surface of the cone (180). A kerfing segment (140) extends downward from the leg (110) beyond the cone (180). A plurality of kerf cutters (142) are attached to the bottom of the kerfing segment (140).

The following invention relates to a drill bit that will drill a round and precisely sized hole when using a hand-held drill motor. The bit has a unique multi-angle lip relief that cuts faster than a standard drill bit and stays sharp longer as well.

The invention discloses a replaceable precise automatic feeding drill, which consists of an automatic feeding drill main body and working platforms. Different working platforms can be selected according to different using environments or conditions, and operation of drilling, reaming, counter sinking and the like of machined workpieces are implemented. The working platforms comprise an X-Y flexible track platform (1), a bilateral sucking disc platform (2) and a C-shaped jaw platform (3), wherein the X-Y flexible track platform (1) can adapt to and attract surfaces with different curvatures; the bilateral sucking disc platform (2) can attract the fixed workpieces in a narrow space; and the C-shaped jaw platform (3) can be used for conventional drilling as a bench drill. The invention has the advantages that the automatic feeding drill is precise and portable, can be quickly replaced and can be used for accurately and quickly drilling various different workpieces.

A rotary drag bit includes a bit body having a face and an axis, a plurality of blades extending radially and longitudinally outward from the face, and at least one split cutter set. The split cutter set includes a plurality of cutters, where at least two of the cutters are primary and/or kerfing cutters located on different blades of the plurality of blades. The pair of primary and/or kerfing cutters of the split cutter set may be located substantially the same radial distance from a center line, or axis of rotation, of the bit and located at substantially the same longitude, or elevation, on the bit as one another, or follow substantially the same rotational or helical cutting path as each other. In addition, at least one backup cutter may be located substantially the same radial distance from a center line, or axis of rotation, of the bit and located at substantially the same longitude, or elevation, on the bit as one or both primary and/or kerfing cutters, or follow substantially the same rotational or helical path as one or both of the primary and/or kerfing cutters. The cutters of a split cutter set may be configured and oriented to provide improved bit life and reduced stress on the cutters. Other embodiments of rotary drag bits are also provided, including methods therefor.

An elongate drill bit (20) with a longitudinal axis (X-X) has a shank (28), a working end (24), and a fluted section (26) between the shank and the working end. The shank, the working end and the fluted section are all formed integrally in the drill bit. The working end has an outer cutting portion (34) and a central pilot tip (36) which extends axially ahead of the outer cutting portion. The pilot tip is formed with at least one pair of minor cutting edges (40, 42; 44, 46) arranged on opposite sides of the axis. The outer cutting portion is formed with a pair of major cutting edges (70, 72) arranged on opposite sides of the axis. The outer cutting portion has a major diameter (D) defined by the pair of major cutting edges. The pilot tip has a minor diameter (d) defined by the at least one pair of minor cutting edges. The fluted section has a pair of helical lands (32) each with a respective inner surface (92) extending axially rearward from one of the major cutting edges and from one of the minor cutting edges. The helical lands define a web (94). Each helical land defines a respective helical flute (30). The helical lands have a pitch (S) and the web has a web thickness (K) at the pilot tip such that the ratio of the pitch to the major diameter (S:D) falls within a range of about 380% to about 410%. Also, the ratio of the minor diameter to the web thickness at the pilot tip (d:K) falls within a range of about 220% to about 380%.

A screw with protruding sheets on a head portion comprises a thread portion; a screw tail at one end of the thread portion, a slot formed on the screw tail; a plurality of screwing sheets formed at another end of the thread portion; a plurality of recesses formed between the plurality of screwing sheets for removing undesired pieces; a drilling head being formed at front ends of the screwing sheets; the drilling head formed with a plurality of protruding sheets made of soft metal. By screwing the screw by rotating from the slot, the screw will rotate so as to drill a hole and enter into a wood plate. Then the protruding sheets enlarge the hole. The undesired wood pieces are removed from the recesses. When the screw further drills into a metal plate, the protruding sheet will be worn out because the protruding sheet is made of soft metal.

An enhanced reaming apparatus and method are disclosed. A reaming assembly may have a motor and a pump that provide linear force, torsional force, and pressurized drilling fluid to a reamer to cause the reamer to enlarge the bore of a pilot hole. The reamer may have a body and a plurality of blade assemblies that cooperate to define two substantially symmetrical, oppositely oriented reaming sections. Each blade assembly may have an inner blade attached to the body and an outer blade extending outward from the body. Hard cutting elements may be used in place of the outer blade. The blade assemblies may be field-replaced, or the orientation of the reamer may be reversed to enhance the life of the reamer. The reamer has jets and circulation openings that release the drilling fluid into the bore to facilitate penetration and remove cuttings.

The invention relates to a hybrid drill bit for petroleum, natural gas and geological drilling. The hybrid drill bit comprises a drill bit body, wherein a cutter wing and a roller cone are arranged on the drill bit body, cutting teeth are arranged on the cutter wing, the roller cone is connected with the drill bit body through a cone leg, and the hybrid drill bit is characterized in that the roller cone is a disk type roller cone. A cutting element on the disk type roller cone is shaped like a disk cutter or an intermittent disk cutter. The patent disclosed by the invention has the beneficial effects that, 1) the scraping motion of a diamond drill bit and the rolling motion of a disk type roller cone drill bit are combined for realizing precrushing at the bottom of a well, thereby ensuring that the diamond cutting teeth can effectively bite rock, eliminating the stick-slip phenomenon of the drill bit in some special formations and the probability of impact disrepair of a polycrystalline diamond compact (PDC) and improving the cutting efficiency and the mechanical drilling speed of the drill bit; and 2) the disk type roller cone can realize the precrushing of a rock layer at the bottom of the well more steadily, reduce the impact on the PDC, enhance the stability in drilling of the drill bit and enable the drill bit to realize faster and more stable drilling.

A positioning fixture for positioning at least one of a trial and a prosthesis in the medullary canal of a long bone is provided. The fixture includes a body and a member for cooperation with the body. The member extends from the body through at least a portion of the long bone and into the medullary canal. The member is adapted to support at least one of the trial and the prosthesis as the one of the trial and the prosthesis is positioned with respect to the long bone.

The invention is embodied in a heavy duty drill bit for hard/soft rock drilling comprising a high fatigue-resistant, high alloy steel bit body having a PCD cutter member and an enlarged shank portion constructed to accommodate torsional forces at high thrust pressures, and reamer means for compensating the effect of bore hole rifling. The invention further involves the method of forming a roof bolting matrix in extremely hard rock formations having a compression strength up to about 50,000 psi using PCD wafers on a high tensile strength steel body coupled by a heavy duty shank through high fatigue-resistant reamer means to a high strength drive steel member.

A flightless rock auger is used for drilling postholes through rock with the use of hydraulic pressure and at slow revolution per minute. The rock auger is used in combination with a conventional flighted auger used for drilling postholes in dirt and clay. During a posthole drilling operation, the rock auger is substituted for a conventional flighted auger as needed for drilling through and removing rock or other hard material such as concrete from the posthole. The rock auger is designed for use at very low revolutions per minute and can function utilizing only the weight of the auger; however, the rock auger is designed for use with pressure drilling units as well for cutting a circular hole through the rock and forming a plug which is to be lodged in the cavity of the rock auger cylinder to be removed from the posthole. The quick connection enables the shaft of a pressure drill unit to engage the flightless auger to be quickly substituted for the rock auger to facilitate fast removal of soft dirt from the posthole. A pilot drill bit can be disposed within the cutting head for extending outwardly pass the cutting edge thereof for starting the hole, breaking up rock, and holding the auger in position during the drilling operation. A portion of the cylindrical body can be removed to allow quick clearance of the plug.

The fixture plate 362 provided with a plurality of reference holes 362f is detachably provided on a chuck 36 transferring the plate-like work 1 to a boring part while sucking and retaining it. The chuck 36 for adsorbing and retaining the plate-like work 1 also has a function of the fixture plate 362. Therefore, it is not required that the fixture plate 362 is separately manufactured and installed and outstanding cost reduction is realized. The exchange work of the fixture plate can be extremely easily and quickly carried out by detachably providing the fixture plate 362 on the chuck.

The invention discloses an anchorage unit and a construction method using the same to ream a ground anchor. The construction method comprises the following steps: using a drill, to which a steel strand is bolted, to drill into the depths of the stratum under the condition that the surface soil is not dug out; rotating the drill, extruding the cement slurry and opening stirring blades at the same time; cutting, spalling, crushing and stirring the foundation soil; reaming to form an anchorage body made of cement-soil mixture with the diameter of the anchorage body being approximately 1.2m and the height thereof being approximately 2m; keeping the drill in the anchorage body to constitute the anchorage unit; then, rotating the anchorage unit, extruding the cement slurry and withdrawing a drill holder and a drill stem at the same time, so that a cement-soil protection layer can be formed outside the steel strand as an anchor cable; and forming the ground anchor after the cement-soil is solidified. By using a disposable drill as the frame of the anchorage unit, the invention has the advantage of reasonable structure, convenient construction and low construction cost, makes full use of the characteristics of the materials and greatly increases the pull-out resistance. Therefore, the anchorage unit is suitable for various anchoring angles, and the construction method constitutes a novel anchor method for fixing engineering structures and large equipment and reinforcing side slopes.

A process for producing through-holes in a sheet member to form a perforated article, such as an arcuate (non-planar) acoustic skin suitable for use in an acoustic panel of an aircraft engine nacelle. The process includes deforming a sheet member to have an arcuate shape with an arcuate surface, mounting and rotating the arcuate-shaped sheet member on a mandrel and then, while rotating the sheet member, directing an electron beam at the arcuate surface of the sheet member and deflecting the electron beam toward multiple locations on the arcuate surface to produce the through-holes through the sheet member in a defined hole pattern and thereby yield a perforated arcuate-shaped sheet member with holes having axes substantially normal to the arcuate surface. The holes are not subjected to elongation in a nonuniform manner after they are produced, and have the same transverse cross-sectional shape.

A fastening bolt includes a shaft defining a central axis, a head, a drilling portion, and first threads alternating with second threads. The first threads and the second threads have different outer diameters. Each first thread has a trailing surface facing the head and inclined to a line perpendicular to the central axis by a trailing angle and a leading surface facing the drilling portion and inclined to the line by a leading angle. The trailing angle is smaller than the leading angle to build an asymmetrical form. Some threads near the drilling portion form respective cutting grooves and recesses thereon. Each cutting groove is formed by walls with different lengths and opened at an angle which does not exceed 90 degrees. The bolt breaks the workpiece quickly by the cutting grooves and recesses. The asymmetrical first threads help enter the workpiece quickly and attain a firm engagement therewith.

An improvement to a sonic drilling system comprising a high-pressure, high-volume water pump connected to a fluid supply and a length of casing in a borehole; an elastic sonic rod string; an eductor coupling having an upwardly directed convergent nozzle; a transition rod; a sub-coupling having a laterally directed convergent nozzle; and a shoe rock bit having a downwardly directed convergent nozzle. The water pump provides fluid down the bore of the sonic rod string, the eductor, the transition rod, the sub-coupling and the rock bit whereby adjustable high-pressure, high-volume fluid is forced through the sonic rod string, the eductor, the transition rod, the sub-coupling and the rock bit to fracture, cut and agitate targeted mineral into slurry and whereby the light slurry is directed effectively upwardly through the annulus to the surface for extraction and heavy slurry gravitates into a sump trap and is recovered with a core barrel.

The invention discloses a distal locking nail sighting device for an interlocking intramedullary nail, and relates to the technical field of orthopaedic trauma medical instruments. A guide slider is slidably arranged in the guide slider mounting frame of the distal guide rod, Between that mount frame of the guide slider and the guide slider, a first slide movement adjusting mechanism is arranged,a distal guide rod is provided with a first guide hole, the guide slider is provided with a second guide hole, the upper and lower sides of the second guide hole are respectively provided with a firstmetal indicating line, and the side frame of the guide slider mounting frame is provided with a metal graduation line. The calibration slider mounting frame of the calibration lever is slidably provided with a calibration slider, a second slider movement adjusting mechanism is arranged between the calibration slider mounting frame and the calibrated slider, the calibration lever is provided witha first calibration hole, the calibration slider is provided with a second calibration hole, and the upper and lower sides of the second calibration hole are respectively provided with a second metalindicating line. The distal locking nail sighting device solves the problem that the distal end of the intramedullary nail is difficult to lock, shortens the operation time and improves the operationefficiency.

The invention relates to the field of petroleum and natural gas drilling equipment, in particular to a drilling speed increasing device with a composite drill bit. According to the technical scheme, the drilling speed increasing device with the composite drill bit comprises a multifunctional connector, the multifunctional connector is connected with a shell and a screw driving assembly, and the screw driving assembly is sleeved with the shell; the end, away from the multifunctional connector, of the shell is connected with a reaming drill bit body, and the end, away from the multifunctional connector, of the screw driving assembly is connected with a pilot drill bit body; water holes are formed in the reaming drill bit body and the pilot bit body; and the reaming drill bit body is a diamond drill bit or a roller bit, and the pilot bit body is a diamond drill bit or a roller bit. According to the drilling speed increasing device, the pilot bit body can achieve two-stage speed increasing, accordingly the overall drilling speed is increased, and the problems that a pilot bit of an existing two-stage drilling device is low in rotation speed and not obvious in drilling speed increasing are solved.

The invention discloses an M-type drilling tooling for multi-row hole pipe fittings. The workpiece radial positioning device is fixedly installed on the base, and includes a workpiece support surface and a workpiece pressing mechanism. The workpiece support surface has an M-shaped structure in section; the workpiece shaft The orientation positioning device includes an end face positioning mechanism and a center angle positioning mechanism; the end face positioning mechanism is set at one end of the workpiece supporting surface; the circle center angle positioning mechanism is set at the other end of the workpiece supporting surface, including indexing plates, front and rear telescopic parts and positioning locking parts The front and rear telescopic parts are set in the cavity formed between the M-shaped structure of the workpiece support surface and the base, and the front and rear telescopic parts are slidingly connected with the workpiece support surface; the indexing plate is fixedly installed at one end of the front and rear telescopic parts; the positioning locking mechanism corresponds to The front and rear telescopic parts are arranged on the base or the workpiece radial positioning device. The M-type drilling processing tool for the multi-row hole pipe fitting can realize rapid positioning drilling processing and improve drilling work efficiency under the premise of ensuring the drilling processing quality.

A non-pneumatic system for use with a workpiece is described. A clamp assembly having a clamp pad is secured to the cabinet. An electrically operated tool is movably secured to the cabinet. The tool has a remote switch which when activated in turn activates the tool. A lever (e.g., a handle) is operatively coupled to the clamp assembly and the tool. When the lever is manually moved, the remote switch is activated and the clamp pad moves towards the work surface. Preferably, the tool also moves towards the work surface opening by manually moving the lever. For example, the tool utilized in this non-pneumatic system may be a drill or saw.