158 results about "Countersink" patented technology

The invention relates to an oil sprayer body and a machining method for a stepped deep hole and a spherical bottom face of the oil sprayer body. The machining method comprises the following steps: pre-drilling: fixing the oil sprayer body on a machining center, and drilling a blind hole by adopting a drill bit; pre-boring: boring a blind hole; drilling a deep hole: taking the blind hole as a guide, adopting a gun drill to enter a second preset depth, starting inner cooling, increasing the rotating speed and the feeding amount of the gun drill, drilling to a third preset depth, retracting the tool, closing the inner cooling, and withdrawing the gun drill; forming counter bores: processing spherical bottom surfaces at the bottoms of the blind holes by adopting a spherical counter bit by taking the blind holes as guidance; hole expanding and boring are conducted on the hole, and the depth is made to be the fifth preset depth; and chambering: chambering with a gun drill by taking the hole as a guide to obtain the fuel injector body. The invention further provides the oil sprayer body obtained through the machining method. The machining center solves the problems that when an existing machining center is used for machining a stepped deep hole and a spherical bottom face of an oil injector body, the coaxiality is poor, and the roughness cannot meet the product requirement.

The invention provides a dimple quality online detection method and system based on 3D scanning and virtual assembly, and the method comprises the steps: S1, obtaining dimple hole point cloud data, segmenting the point cloud data, and obtaining conical surface point cloud data; s2, performing conical surface fitting on the conical surface point cloud data through a fitting algorithm to obtain a local point set and a cone parameter; and S3, according to the local point set and the cone parameters, pit diameter contour plane fitting is carried out, the pit diameter contour plane and the nail head are assembled in a simulated mode, and a dimple depth error value is obtained. On the basis of 3D scanning and virtual assembly, pit hole surface point cloud analysis, nail rod interference analysis and compensation functions are achieved, pit depth measurement is achieved, and compared with a monocular or binocular vision scheme, the measurement precision is higher.

A parameterized representation of a can end (e.g., for an aluminum can) may be provided. The parameterized representation may include a series of arc segments connected end to end, for example. The series of arc segments may span between an end of a center panel and an edge of the can end. Based on the parameterized representation, a set of can end profiles may be generated having differing parameter values (such as with arc segments that differ in a combination of arc segment included angle and radius). The set of profiles may be evaluated according to criteria (such as buckle pressure and mass criteria). A can end profile may be selected from the set based on performance relative to the criteria. The selected profile may include a countersink radius with a particular threshold or range, for example. The selected can end profile may be formed into a can end.

Embodiments of the present disclosure include a countersink portion having at least one ridge, the at least one ridge tapering to at least one inflection, the at least one ridge further extending from the at least one inflection toward a drilling portion, thereby forming at least one transition surface; the drilling portion having an elongated pin and a tip; wherein the drilling portion extends from the countersink portion and the at least one transition surface extends between the countersink portion and the tip.

A system for assembling a container and closure comprising an expanding collet which has a plurality of pivoting collet segments, each configured to simultaneously pivot radially outward about a pivot point and comprising. The collet comprises a lip that is engagable with the rim of the open end of the container and an angled tip positioned radially inward from the lip and shaped to press a countersink portion of the closure against an interior wall of the container as the collet segments pivot radially outward. As the container and the chuck are brought together, the rim engages with the lips of the collet segments and causes the angled tips of the collet segments to pivot outward toward the interior wall of the container, thereby pushing the countersink portion of the closure against the interior wall of the container.

A can lid shell 10 includes a panel section 11 having a circular peripheral edge, a countersink section 12 formed and recessed along the peripheral edge of the panel section 11, a chuck wall section 13 rising from an edge of the countersink section 12, and a flange section 14 protruding from an upper end of the chuck wall section 13. The countersink section 12 includes a first curved surface portion 123C that is convex toward an internal space SP1. The chuck wall section 13 includes a second curved surface portion 131 that is connected to the first curved surface portion 123C and that is concave toward the internal space SP1. Furthermore, the second curved surface portion 131 and the first curved surface portion 123C are formed to be thicker as both are directed from an edge p8 on the flange section 14 side to an edge p6 on the panel section 11 side.

The utility model discloses an anti-loosening screw fastening structure easy to manufacture in batches, a plate and a seat are locked through a screw, and the screw comprises a screw head and a screw rod; the top surface of the plate is provided with a round countersink, the bottom of the round countersink is provided with a threaded through hole, and the top surface of the seat is provided with a threaded countersink; an elastic special-shaped gasket is pressed between the bottom surface of the screw head and the bottom surface of the round countersink, and a plurality of anti-skid teeth are rotationally and symmetrically distributed on the bottom surface of the screw head; a positioning groove is formed in the wall face of the round countersunk opening, and a positioning block is arranged on the outer ring of the elastic special-shaped gasket. The elastic special-shaped gasket is a second special-shaped gasket, at least one radial slot is formed in the circumferential face of the second special-shaped gasket in the radial direction of the gasket, and a circumferential slot is formed in the side, in the circumferential direction of the gasket, of the radial slot from the bottom, relatively close to the circle center of the gasket, of the radial slot. Strip-shaped parts separated by L-shaped open seams formed by the radial open seams and the circumferential open seams form elastic warped pieces; the second special-shaped gasket is formed through one-time punch forming of an equal-thickness plate. The cost is low.

To provide a countersinking method capable of stably providing a desired countersinking shape without damaging the surface of a workpiece irrespective of the hardness of the workpiece.SOLUTION: This countersinking method for forming a countersinking shape having a countersinking surface of a prescribed angle on a sheet metal workpiece (W) comprises: a first step of forming a lower hole (W1); a second step of plastically deforming one opening edge of the lower hole (W1) by a first punch (62) having an inclined part (621) of a first countersinking angle (θ1) larger than a prescribed angle (α) to form a primary countersinking surface (W21) of the first countersinking angle (θ1); and a third step of plastically deforming the primary countersinking surface (W21) by a second punch (63) having an inclined part (631) of a prescribed angle (α) to form a secondary countersinking surface (W31) of a prescribed angle (α) having an aperture equal to that (φW21) of the primary countersinking surface (W21).SELECTED DRAWING: Figure 3A

A system for assembling a container and closure comprising an expanding collet which has a plurality of pivoting collet segments, each configured to simultaneously pivot radially outward about a pivot point. The collet comprises a lip that is engagable with the rim of the open end of the container and an angled tip positioned radially inward from the lip and shaped to press a countersink portion of the closure against an interior wall of the container as the collet segments pivot radially outward. As the container and the chuck are brought together, the rim engages with the lips of the collet segments and causes the angled tips of the collet segments to pivot outward toward the interior wall of the container, thereby pushing the countersink portion of the closure against the interior wall of the container.

The invention relates to the technical field of valve manufacturing, and discloses a special counter sinking tool for valve manufacturing, which comprises a supporting and positioning mechanism, and the top end of the supporting and positioning mechanism is connected with a counter sinking mechanism, an aperture grinding mechanism and a linkage mechanism. A tooth surface rod of the second positioning rack is just engaged with the tooth surface of the second positioning gear, so that the tooth surfaces of the two first positioning gears respectively drive the two first positioning racks and the lifting table to lift, and a grinding seat connected to one side of the lifting table is stably contacted with a countersinking working surface; at the moment, when the positioning shaft and the cutter rotate, the polishing seat and the positioning seat are driven to rotate along the positioning frame, so that the polishing seat fixed at the top end of the positioning seat stably contacts and polishes burrs of a countersink, the burrs are treated in time after the countersink is finished, subsequent procedures are avoided, the machining quality of the valve body is improved, and the assembling difficulty of the valve body is reduced; the connection strength is improved.

The utility model belongs to the field of motors, and particularly relates to a motor shell which is low in cost and convenient to assemble. The motor shell comprises a hollow middle shell body, an outer ring made of nylon materials is arranged on the peripheral face of the middle shell body, connecting holes are evenly distributed in the side face of the outer ring, a polygonal counter bore is formed in the portion, at one end of each connecting hole, of the outer ring, the motor shell further comprises a connecting rod, a polygonal part is arranged on the connecting rod, a connecting screw hole is formed in the connecting rod along the axis, and the polygonal counter bore is connected with the connecting screw hole. The connecting rod is inserted and mounted in the connecting hole, the polygonal part is assembled in the counter bore, the end covers are arranged at the two ends of the middle shell respectively, connecting holes corresponding to the connecting screw holes are formed in the end covers, fasteners penetrate through the connecting holes to be connected with the connecting rod, and the end covers are fixed to the two ends of the middle shell. The utility model has the advantages of low cost, convenience and safety.

A can shell includes a center panel, an inclined panel wall extending at a downward angle from the center panel, an annular countersink formed around the inclined panel wall, the annular countersink including an inner countersink wall and an outer countersink wall, a chuck wall extending from the outer countersink wall, the chuck wall including a kick portion having a curved shape beginning at a point lower than a lowest point of the inclined panel wall, and a curl extending radially outwardly from the chuck wall.

The invention relates to the technical field of marine equipment, in particular to a seat type chain controller which comprises a base, a first chain control block and a second chain control block, the base is perpendicularly fixed to an anchor gear deck of an exploration platform, the bottom of the base penetrates out of the anchor gear deck, a positioning hole for an anchor chain to pass through is axially formed in the base, and a top opening of the base is of a countersink structure; a plurality of lifting lugs are arranged at the top of the first chain control block and the top of the second chain control block, the first chain control block and the second chain control block are detachably connected and define a containing space allowing a single middle chain ring on an anchor chain to axially penetrate through, and the first chain control block and the second chain control block serve as a whole and are placed in the top opening of the base with the bottom facing downwards. The seat type chain controller can effectively work on an exploration platform.

A part intended for use with a threaded insert includes a main body manufactured from fully dense material and a plurality of localized, higher porosity, lower strength regions configured to accept a plurality of keys from the threaded insert. A method of inserting a threaded insert into a part includes the steps of providing a part with a main body manufactured from fully dense material and a plurality of localized, higher porosity, lower strength regions configured to accept a plurality of keys from the threaded insert; forming in the main body a threaded bore configured to accept the threaded insert in which a plurality of localized, higher porosity, lower strength regions surround a periphery of the threaded bore; forming a countersink in the threaded bore such that the countersink is adjacent to a top surface of the part; and inserting the threaded insert into the threaded bore to position the threaded part at or below the top surface of the part. A plurality of keys inserted into a plurality of dovetail slots established in external threads of the threaded insert align with the plurality of localized, higher porosity, lower strength regions. The plurality of keys are driven into the plurality of localized, higher porosity, lower strength regions to anchor the threaded inset into the part.

The invention relates to a method for manufacturing an aerodynamic panel (32) for an aircraft propulsion assembly (10), comprising the steps of: a) applying at least one reinforcing plate (38, 42, 44) to a first surface (34a) of a wall (34); the method includes the steps of a) forming a wall (34, 36), b) rigidly attaching a reinforcing plate (38, 42, 44) to the wall (34, 36) by friction stir welding, c) forming through holes (50) through the wall (34) and the reinforcing plate (38, 42, 44), the holes (50) being formed through a bead (40), and d) fitting screws (52, 54, 56) into the holes (50), the screws (52, 54, 56) including countersunk heads (58) having a thickness (H) greater than the thickness (E1) of the wall (34) and less than the thickness (E3) of the bead (40).

An insert for securing a shaft of an arrow to a cutting tip includes a body member extending between a distal end and a proximal end, a stem extending from the distal end of the body member and formed integrally with the body member, the stem including a protrusion extending about a first end of the stem in a circumferential direction, and a sleeve including a countersink. The countersink engages the protrusion of the stem, such that, when the sleeve is disposed about the stem and positioned adjacent the distal end of the body member, the sleeve is coaxial with the stem. The cutting tip is secured to the proximal end of the body member.

The utility model relates to the technical field of rocker arms, in particular to a rocker arm assembly with variable valve lift for an engine, which comprises a rocker arm body and a rocker arm roller, two ends of the rocker arm body are integrally connected with extension arms, and one end of each extension arm is provided with an embedded groove for movably mounting the rocker arm roller. Two reinforcing counter bores are formed in the embedded groove, and the rocker arm body is provided with an anti-abrasion mechanism through the two reinforcing counter bores, wherein the anti-abrasion mechanism is used for movably supporting the rocker arm idler wheel. The extension arm with the integrated structure is arranged on the rocker arm body, so that the rocker arm roller in the rocker arm body can be disassembled, assembled and replaced conveniently; a reinforcing counter bore is formed in the bearing support, a bearing shaft elastically supported by a first strong spring is arranged in the reinforcing counter bore so that the bearing support can be connected with the extension truss, and a supporting shaft elastically supported by a second strong spring is arranged on the extension truss, so that bidirectional buffering support is provided for the bearing support, and abrasion consumption of a rocker arm body in the rotating process of a rocker arm roller is reduced.

A kit for joining two workpieces in a confined space using a threaded fastener. The kit has two plates which sandwich the workpieces. The plates have at least one pair of matched central holes through which a bolt is inserted. The bolt is captured with a hex countersink, negating the need for a tool behind the head to resist torque applied to a nut threaded onto that bolt. The plates also have matched pairs of outboard holes which do not overlap the workpieces. Rods, such as hex bolts, are inserted through a matched outboard hole pair. The rods react against edges of the workpieces to resist clockwise and counterclockwise applied torque. The nut can then be attached to the bolt through the central hole using a conventional tool, such as a ratchet wrench. There is no need for a ratchet wrench or other tool to apply counter-torque to the head of that bolt.

The invention describes a system and method for closing and extracting filled pre-rolled cones. The system comprises of a holding piece, a catch chamber, a closing piece, and an extracting piece. The holding piece comprises a plurality of openings to hold the filled pre-rolled cones and the openings have a wider diameter on the top that tapers towards the bottom. The closing piece comprises a plate, legs and a plurality of countersink holes. The countersink holes are configured to be placed and pressed over the top of each filled cone to funnel the excess paper of the cone. The extracting piece comprises a base and one or more pins. The countersink holes of the closing piece can accommodate one or more pins of the extracting piece. An application of force on the base and one or more pins of the extracting piece can fold the excess paper of the filled pre-rolled cones in the holding piece and release the pre-rolled cones through the openings of the holding piece into the catch chamber.

The utility model belongs to the technical field of bus ducts, and particularly relates to a plug-in type bus duct. The main groove body is used for power transmission and distribution, the mounting base is detachably connected with the main groove body, and copper bars are arranged at the two ends of the main groove body. The mounting base comprises a base plate used for external fixed connection, a countersink groove is formed in the base plate, two clamping blocks distributed oppositely are slidably arranged in the countersink groove, a guide assembly is arranged between the clamping blocks and the base plate in a matched mode, a power push block is arranged on one side of each clamping block in a spaced mode, and a connecting rod assembly is arranged between each power push block and the corresponding clamping block. A power piece is arranged on the side, away from the clamping block, of the power push block and used for pushing the power push block to be close to or away from the clamping block. And a locking block which is correspondingly positioned between the two clamping blocks is arranged at the bottom of the main groove body. After the mounting base disclosed by the utility model is mounted, the main groove body can still be vertically and flexibly moved and mounted, so that the mounting flexibility and adaptability are improved.

The utility model discloses circuit board stepped hole controlled deep processing equipment which comprises a processing device, the processing device comprises a first drilling mechanism, a second drilling mechanism, a moving mechanism and an anti-shaking mechanism, the second drilling mechanism comprises a first lifting seat, a first cutter and a first motor, the anti-shaking mechanism is arranged on the first lifting seat, and the first cutter is arranged on the first lifting seat. The anti-shaking mechanism comprises a lifting frame, a first spring and a guide piece; the lifting frame is connected with the first lifting seat in an up-down sliding manner; the first spring is used for downwards extruding the lifting frame; the guide part is used for guiding and limiting the first cutter to prevent the first cutter from shaking, a displacement sensor is arranged on the lifting frame, the displacement sensor is electrically connected with the first lifting base, and the displacement sensor is used for detecting the relative height displacement distance between the lifting frame and the first lifting base and controlling the descending distance of the first lifting base. According to the circuit board stepped hole controlled deep processing equipment, the depth dimension precision of the counter bore of the stepped hole of the circuit board can be improved.

The disclosure relates to a rotary tool guide having a top side, an underside and a set of rigid guide members, a set of guide holes each of which extends through one of the guide members. The guide holes are arranged to guide a rotary tool such as a drill or countersink therethrough. The guide members are spaced apart by flexible portions which can deform so as to allow the underside to change shape to conform to a surface of a workpiece.

1. The name of the product of this design: Combined countersink drill (2). 2. Purpose of this design product: used for drilling holes in wood. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: 3D drawing of Design 1. 5. Designate Design 1 as the base design.

A lamp base 60 supports an upright stem in the base-contacting end of which two headed machine screw are received in a threaded bore. To assemble base 60 to the stem, each screw and head pass axially through a region 61 of an opening 68B, 70B in base 60, each region 61 having a bore diameter enlarged to pass the head. The fixing shanks are then transferred laterally to an adjacent countersunk region 63 of each opening 68B, 70B by relative displacement between the stem and base 60 to capture the fixing heads, preventing axial removal of the fixings from the openings 68B, 70B by cooperation of the fixings' male countersinks with the base's female countersinks 63. The screws are then tightened to secure together the stem and base. Disassembly is accomplished by reversing the foregoing process. The structure described enables supply of the knocked-down lamp as a flat pack with captured fixing(s).

The invention relates to the technical field of countersink drills, and discloses an integrated hard alloy countersink drill which comprises a cutter handle and a countersink drill body, the countersink drill body is fixedly mounted on the cutter handle and comprises a countersink drill body, a drill bit and a drill core, a mounting hole is formed in one end of the countersink drill body and used for fixedly mounting the drill bit, and a hexagonal connector is arranged at the other end of the countersink drill body; an inner hexagonal hole is formed in the cutter handle, and the hexagonal connector is fixedly matched with the inner hexagonal hole; the drill core is coaxially and fixedly connected into the drill bit; the counter bore drill main body mounted in the inner hexagonal hole can be replaced by a screwdriver bit which is coaxially and fixedly mounted; the counter bore drill body and the screwdriver bit can share the same mounting handle, the functions of the screwdriver bit and the counter bore drill are rapidly switched through the self-locking ring, the problem that a traditional counter bore drill is single in function is solved, the operation efficiency is greatly improved, the tool replacement frequency and the carrying burden are reduced, and the practicability is high. And meanwhile, the connection precision loss caused by frequent replacement of tools is reduced.

A knife for a cylindrical rotor includes at least two sharpened edges adapted to cut materials during land clearing or mulching. The knife further includes a top surface and a bottom surface wherein the knife is shaped as an inverted frusto-square pyramid. The knife may further include a tapered sidewall defining one sharpened edge. The angle may be about 30° to about 60°. The knife may have four sharpened edges. The knife further may include an aperture that may be equidistant from the four sharpened edges. The knife is adapted to be moved when one sharpened edge becomes dull. The knife may further include a conical countersunk aperture. The knife may have a thickness of about ¼″ to about ½″.

The present invention discloses a countersink accuracy measurement method in the field of hole-making detection. A measuring head with a taper angle at the front end and a detector capable of accurately measuring the height position of the measuring head are used as measuring tools. The taper angle of the measuring head needs to be greater than the chamfer angle of the countersink to be measured. The measurement process includes the following steps: First, place the measuring head directly above the countersink, and determine a zero position of the measuring head through the detector. Then, select a standard countersink as the measurement reference, move the measuring head downward from the zero position so that the conical surface of the bottom taper angle of the measuring head contacts the outer edge of the hole diameter of the countersink, and record the height H0 of the measuring head's descent through the detector. Finally, use the above method to detect the countersink to be measured, and record the height H1 of the measuring head's descent from the zero position. This measurement method can convert the deviation of the countersink hole diameter into the change of the height position of the measuring head, and can quickly judge whether the countersink is qualified by detecting the position of the measuring head, which is convenient and fast, and can also avoid the interference of material powder on the measurement.

A fastening system for an aircraft includes first and second parts of the aircraft, a bolt hole including a bolt countersink and being defined by a bolt hole surface of the first part, a nut hole including a nut countersink and being defined by a nut hole surface of the second part, a bolt having a shank including threads, and a bolt head with an undersurface complementarily shaped to the bolt countersink, and a nut having threads and having a nut chamfer complementarily shaped to the nut countersink, the shank being dimensioned relative to the first and second parts, the bolt hole and the nut hole such that the shank is spaced from one of or both of the bolt hole surface and the nut hole surface. A method of fastening a first aircraft part with a second aircraft part using a bolt and a nut is also described.

The method for producing a blisk 20 comprising channels 24 extending between blade profiles 22 uses a bell-type countersink 10 having a conical lateral surface 14. The method includes the steps of pro