47 results about "Countersink" patented technology

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.

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 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 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 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.

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″.

A can shell includes a center panel, an inclined panel wall extending at a downward angle from the center panel, and a looped countersink formed around the inclined panel wall, the looped countersink starting at an inverted point of the inclined panel wall and looping around to an outer countersink wall, wherein the inverted point is proximate to the outer countersink wall.

A can shell includes a center panel. An inclined panel wall extends at a downward angle from the center panel. An annular countersink is formed around the inclined panel wall and includes an inner countersink wall and an outer countersink wall. A countersink base is formed at a bottom end of the inner countersink wall and a bottom end of the outer countersink wall. A chuck wall extends from the outer countersink wall. The inner countersink wall and the outer countersink wall are generally parallel between the countersink base and the inclined panel wall and the chuck wall. A curl extends radially outwardly from the chuck wall. The countersink has a depth of between 0.265 and 0.280 inches from the uppermost surface of the curl and a depth of between 0.085 and 0.11 inches from the center panel.

A beverage can end (10) has a circumferential curl (14) positioned about a longitudinal axis (50). A circumferential wall (15) extends downwardly and radially inwardly from the circumferential curl (14). A countersink (16) extends radially inwardly from the circumferential wall (15). A center panel (12) extends radially inwardly from the countersink (16) and is centered about the longitudinal axis (50). A tab (28) is attached to a public side (32) of the center panel (12) by a rivet (38). A tear panel (20) is defined by a frangible score (22) and a non-frangible hinge segment (25) and extends between ends of the frangible score (22). The frangible score (22) has a check slot (70) defined by a thickened residual which is bounded at opposing ends by portions of the frangible score (22) having a residual thickness less than the thickened residual of the check slot (70).

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.

The invention relates to a countersink blade, a countersink and a manufacturing process of the countersink blade, and belongs to the field of countersinks, the countersink blade is provided with a cutting edge part, the cutting edge part is provided with a row of sawteeth, and the tooth bottoms and the tooth tops of the sawteeth are subjected to rounding treatment; the surface, facing a workpiece, of the blade in the machining process is constructed to be a first inclined face, and a row of sawteeth are located on the first inclined face. And the blade is made of PCD (Polycrystalline Diamond). The countersink blade is provided with the sawteeth, so that the countersink can machine high-precision concentric lines on the end face of a hole at a time, the machining efficiency and quality of the concentric lines are greatly improved, the stability and consistency of the concentric lines are good, and the assembling quality of bolt connecting pieces in the later period is guaranteed; the method has the advantages that the structure is simple, the blade roughness can be customized according to customer requirements, the differentiated machining requirements are met, the microcosmic sawtooth shape of the countersink blade is accurately designed by matching with the laser micromachining technology, and the high-precision concentric line structure and the high-precision and long-life cutting performance are formed.

The utility model discloses a plane spot-facing drill, relates to the technical field of spot-facing drills, and aims to solve the problem that when the extension length of an existing drill needs to be adjusted, a cutter bar needs to be taken down from equipment, so that the machining efficiency is affected. A locking mechanism is arranged on the cutter bar, an adjusting mechanism is arranged below the locking mechanism, and the extending length of the drill bit is controlled through the adjusting mechanism; by means of the structure arranged on the cutter bar and the adjusting mechanism arranged on the cutter bar in a matched mode, when a worker needs to adjust the extending length of a drill bit, the worker only needs to pause equipment and manually rotate an adjusting piece in a rotating hole, and the adjusting piece is matched with an ejector rod and a fixing nut, so that the ejector rod moves in the adjusting hole, the drill bit is pushed upwards, and then the drill bit can be adjusted. And meanwhile, the drill bit slides in the mounting groove and the positioning groove, so that the extending length of the drill bit is adjusted to meet different machining requirements, and compared with an existing adjusting mode, the design scheme is convenient, rapid, time-saving and labor-saving.

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.

An example device includes a housing including a top portion, and a lower portion which connect together to house a spring, and a bushing disposed inside the housing with a backside of a bushing rested against the spring, and the backside of the bushing is in contact with a probe tip of a depth measurement gauge disposed in a top portion of the housing.

The utility model discloses a quick-change welding alloy counter boring cutter, and relates to the technical field of cutters. The quick-change type welding alloy counter boring cutter comprises a cutter bar, a cutter head and a cutter head, the cutter handle part extends in the axial direction of the cutter bar; the connecting part is connected with the cutter handle part and extends in the axial direction of the cutter bar; the first clamping part is arranged on the connecting part; the reverse reaming tool bit is connected with the connecting part; and the second clamping part is arranged on the reverse reaming tool bit. The reverse countersink solves the problems that the existing reverse countersink is provided with a tightening screw, so that the condition that the screw is abraded and looses in the tightening process is often caused, and the replacement process is relatively tedious.

This utility model relates to the field of countersink devices, providing a countersink device for gearbox end covers. The countersink device for gearbox end covers includes a support portion for insertion into a mounting hole in the gearbox end cover; a connecting rod portion, the first end of which is slidably connected to the support portion; and a drive portion, slidably connected to the second end of the connecting rod portion, the output end of which is connected to a cleaning cutter head for cleaning the end face of the hole to be cleaned. This countersink device for gearbox end covers avoids problems such as uneven cleaning or excessive cutting caused by positioning deviations, ensuring the accuracy and quality of the cleaning operation. Operators can easily adjust the working position of the drive portion according to the specific position, depth, and angle of the hole to be cleaned in the gearbox end cover, ensuring that the cleaning cutter head accurately reaches the area to be cleaned. It adapts to the cleaning needs of gearbox end covers of various specifications and structures, expanding the applicability of the device; and it can quickly and effectively clean the end face of the hole to be cleaned, improving cleaning efficiency.

The present disclosure relates to a method for correcting pre-compensation of a countersink dimension in numerically controlled countersinking. The method includes: acquiring historical machining data of countersink hole machining of a plurality of countersink holes for products, and forming a historical dataset; performing a correlation analysis on the historical machining data of the countersink hole machining, and expanding a data volume of the historical dataset; performing a statistical analysis based on the expanded historical dataset to obtain a correction value for a pre-compensation value of a countersink hole machining dimension, and correcting a countersink hole dimension machining parameter.

A method of forming a can end (102) includes obtaining a shell (400) having a center panel (202), a seaming bead (204), a transition wall (406), and a countersink (404), the seaming bead (204) coupled to the center panel (202) by the countersink (404), the countersink (404) having an outer wall (408) coupled to the seaming bead (204) and an inner wall (410) coupled to the transition wall (406), the transition wall (406) coupling the center panel (202) and the inner wall (410) of the countersink (404), the countersink (404) including first and second arcuate transition portions coupling the outer wall (408) and the inner wall (410); and forming a concave bend in the transition wall (406), the concave bend positioned between the countersink (404) and the center panel (202); and reshaping the countersink (404) after forming the concave bend.

A pulley assembly having a body, a shaft mount and a plurality of bolts is disclosed. The body is aligned to the shaft mount by providing a tight tolerance between a shoulder portion of the bolt and a neck portion of a counter sunk hole formed in the body. Additionally, an outer surface of the body may have a pattern of friction lines or patches formed by fusing particulate matter to the outer surface with heat generated by a laser beam.

To provide a mechanism for restraining rotational looseness of a male screw, in a construction method for fixing a waterproof sheet or a heat insulating material to a metallic roof backing by a fixing disk and the male screw.SOLUTION: A fixture used for fixing a waterproof sheet or a heat insulating material to a substrate, the fixture including a fixing disk and an external screw, the fixing disk having a through hole for inserting a shaft portion of the external screw and a counterbore for accommodating a head portion of the external screw, the external screw having a head portion, a screw portion, and a cylindrical portion between the head portion and the screw portion, the cylindrical portion having a plurality of grooves or linear projections extending in a direction parallel to or oblique to an axis of the external screw, the fixing disk has a plurality of claws extending toward the through-hole around the through-hole on a surface opposite to the surface having the counterbore, the claws can be bent only in a rotation direction in which the male screw is tightened when the male screw is inserted into the fixing disk and the male screw is rotated, and free ends of the claws of the fixing disk are engaged with the groove or the linear protrusion of the male screw when the male screw is inserted into the fixing disk.SELECTED DRAWING: Figure 1

The utility model provides a back countersink. Comprising a cutter bar, one end of the cutter bar is provided with a connector, a limiting step is formed between the connector and a guide rod, and the connector is provided with a threaded hole and a pin hole A; reverse scrapers are arranged on the two opposite outer walls of the tool bit, pin holes B perpendicular to the reverse scrapers are further formed in the tool bit, and the tool bit is axially connected with the connector and limited through a limiting step. The steel ball screw is screwed into the threaded hole, and a movable steel ball is arranged at the front end of the steel ball screw; the locking pin sequentially penetrates through the pin hole A and the pin hole B, and an arc groove is formed in the middle of the locking pin and makes contact with a steel ball of the steel ball screw. Through the cooperation of the limiting screw and the locking pin, when the cutter is replaced, only the locking screw needs to be loosened, and the replacement speed is increased; the reverse scraper is in contact with the inclined surface of the tool bit, so that the contact area of the reverse scraper and the tool bit is increased, and the strength of the tool bit is improved.

A can shell includes a center panel. An inclined panel wall extends at a downward angle from the center panel. An annular countersink is formed around the inclined panel wall and includes an inner countersink wall and an outer countersink wall. A countersink base is formed at a bottom end of the inner countersink wall and a bottom end of the outer countersink wall. A chuck wall extends from the outer countersink wall. The inner countersink wall and the outer countersink wall are generally parallel between the countersink base and the inclined panel wall and the chuck wall. A curl extends radially outwardly from the chuck wall. The countersink has a depth of between 0.265 and 0.280 inches from the uppermost surface of the curl and a depth of between 0.085 and 0.11 inches from the center panel.

A can shell includes a center panel, an inclined panel wall extending at a downward angle from the center panel, and a looped countersink formed around the inclined panel wall, the looped countersink starting at an inverted point of the inclined panel wall and looping around to an outer countersink wall, wherein the inverted point is proximate to the outer countersink wall.

A can shell includes a center panel. An inclined panel wall extends at a downward angle from the center panel. An annular countersink is formed around the inclined panel wall and includes an inner countersink wall and an outer countersink wall. A countersink base is formed at a bottom end of the inner countersink wall and a bottom end of the outer countersink wall. A chuck wall extends from the outer countersink wall. The inner countersink wall and the outer countersink wall are generally parallel between the countersink base and the inclined panel wall and the chuck wall. A curl extends radially outwardly from the chuck wall. The countersink has a depth of between 0.265 and 0.280 inches from the uppermost surface of the curl and a depth of between 0.085 and 0.11 inches from the center panel.

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.

A bit including a bit body and a shank depending from a bottom of the bit body. The bit body including an integral washer portion that extends to a rear annular flange and a tapered portion adjacent the rear annular flange that is complementary to an angle of a countersink at a forward end of a bore of a bit holder, radially aligning the bit concentric with the bore of the bit holder. The shank comprises a cap distal portion including a diameter that is less than or equal to a diameter of a forward portion of the shank. The bit includes a retainer disposed circumferentially about the shank, the retainer including a reduced diameter distal section allowing the bit to be manually inserted into the bore of the bit holder a predetermined distance before needing to resort to hammer hits to securely mount the bit in the bore of the bit holder while still allowing the bit to freely rotate within the bore of the bit holder.

Method for machining an aircraft structural component using a machining system, the machining system having a drilling unit and a riveting unit, a manufacturing process controller for actuating the components of the machining system, an optical sensor and a projection unit. The method comprising the steps of: projecting a pattern by the projection unit onto a machining point with a rivet element inserted into a drill hole of the machining point, detecting the machining point including the projection of the pattern by the sensor and generating corresponding detection data by the sensor, evaluating the detection data by an evaluation unit, adapting the tool control data for a drill hole to be drilled subsequently according to the manufacturing specification at a further machining point, in particular the countersink depth of the drill hole to be drilled, by the manufacturing process controller on the basis of the evaluation of the detection data.

The invention relates to the technical field of countersink machining equipment, and provides an upper cover countersink conical head punching device which is characterized by comprising a tool, the tool comprises a guide plate, side limiting blocks, end positioning blocks and a bottom plate, the two sides of the guide plate are supported above the bottom plate through the side limiting blocks, and the end positioning blocks are located at the two ends of the guide plate; a guide groove allowing the upper cover to be inserted is formed among the guide plate, the side limiting blocks on the two sides and the bottom plate, an end positioning block is fixed to the end, located in the guide groove, of the bottom plate, and two pairs of conical guide holes are formed in the guide plate. The bottom hole in one end of the upper cover is communicated with one pair of conical guide holes in a right-facing mode, and after the upper cover is inserted into the guide groove in the reverse direction and abuts against the end positioning block, the bottom hole in the other end of the upper cover is communicated with the other pair of conical guide holes in a right-facing mode. The device overcomes the defects in the prior art, is reasonable in design and compact in structure, and solves the technical problem that the countersink conical head of an existing upper cover is inconsistent in machining shape and depth.