42results about "Cam-followers" patented technology

A drive unit for motor vehicle applications, in particular motor vehicle closing devices. The drive unit comprises an electric motor and at least one drive element driven by the electric motor. In addition, an actuation lever that cooperates with the drive element is provided. The drive element and / or the actuation lever are advantageously designed to be able to rotate about an axis. A rotatably mounted intermediate element is provided between the drive element and the actuation lever. According to the invention, the intermediate element is in the form of a friction-reducing rolling element.

Abstract: A follower bearing includes an inner member including an inner wall surface defining a through hole, an outer ring, and a plurality of rolling elements. A portion of the through hole with a smallest diameter has a diameter that is 40% or more of an outside diameter of a portion of the inner member with a smallest outside diameter. The inner member is composed of a steel containing not less than 0.12 mass% and not more than 0.39 mass% carbon, not less than 0.05 mass% and not more than 0.40 mass% silicon, not less than 0.55 mass% and not more than 0.95 mass% manganese, and not less than 0.60 mass% and not more than 1.25 mass% chromium, with the balance consisting of iron and unavoidable impurities, and includes a carburized layer so as to constitute at least a part of a surface thereof. In the carburized layer, the grain size number of prior austenite grains as specified in JIS G 0551 is not less than 8.6.

The present invention concerns an aircraft seat. The aircraft seat comprises at least one moveable element, and a cam follower arrangement associated with the moveable element. The cam follower arrangement comprises a first cam follower and second cam follower attached to a common bogie. Spreading the load over two cam followers attached to a common bogie may reduce the wear on each individual cam follower. This reduction in wear may result in fewer maintenance tasks associated with the aircraft seat, and may make the aircraft seat more robust.

The application discloses a cam bearing follower sliding device, which comprises a guide rail, a reciprocating sliding piece slidingly arranged in the middle of the guide rail, a follower body arranged in the middle of the reciprocating sliding piece, a guide rail bearing support fixedly arranged in the middle of the lower end of the guide rail, two guide rail baffle plates symmetrically fixedly arranged at the two ends of the guide rail, two negative pressure adsorption support mechanisms arranged at the two ends of the guide rail bearing support, and a forward and reverse rotation cleaning mechanism for following the reciprocating movement of the reciprocating sliding piece and cleaning dust and impurities on the two side surfaces of the guide rail. The forward and reverse rotation cleaning mechanism symmetrically arranged at the two ends of the reciprocating sliding piece can dynamically clean the two side surfaces of the guide rail by means of the positive and reverse rotation of the soft-brush collecting cylinder with the forward and reverse rotation shaft. The elastic contact of the dust-removing soft-brush with the surface of the guide rail and the axial extension and contraction cooperation of the flat key groove and the limiting flat key can ensure that the dust-removing soft-brush is always attached to the guide rail profile.

To provide a blocking mechanism that has reliability, is inexpensive and easy to implement, and withstands high loads.SOLUTION: The present invention resides in a blocking mechanism that comprises a transmission casing (1), a movable pawl (34) having a locking finger (35), a linear actuator (37) for moving a movable carriage (38) guided by a guide rail (27), and a housing (2) formed on the transmission casing. The movable pawl is mounted on the transmission casing to be pivotable in a plane about a pivot axis between a locking position in which the locking finger is engaged in a locking recess and a release position in which the locking finger is disengaged from the locking recess. The movable pawl comprises a cam surface, and the movable carriage includes a cam follower capable of moving on the cam surface. The guide rail is fitted in the housing.SELECTED DRAWING: Figure 6

The driven bearing (1) has: an inner member (10) including a first body portion (50) and a flange portion (52); an outer ring (20); a plurality of rolling elements (40); and a first sealing member (30A), including an annular first portion disposed between the outer peripheral surface (52A) of the flange portion (52) and a first surface (22A), and at least a portion thereof forming a sealing structure with the outer ring (20). The first portion has a shape in which the outer diameter in the axial direction increases as it approaches the end face (52B) of the flange portion (52) opposite to the first rolling surface (51A).

The invention relates to a method for producing a roller tappet (44) for a pump or valve train of an internal combustion engine, comprising a cylindrical housing (43) for guiding a longitudinal movement of the roller tappet (44) in a bore of the internal combustion engine, the cylindrical blank (1) of the housing (43) being produced in a lightweight design and having at least one flattened section (5, 6, 7, 8) on the outer diameter, at least one edge (11 to 18) formed on the outer diameter of the blank (1) in an intermediate region between the axial ends of the blank (1) is subjected to a low-notching deburring treatment by turning. The invention also relates to a forming tool (31, 34, 36) for producing a roller tappet (44) in such a method. The invention also relates to a roller tappet (44) having a lightweight structure produced by such a method.

A processing station for a die necking machine includes a frame, a forming cam arrangement fixedly coupled to the frame, a knockout cam arrangement fixedly coupled to the frame, and a process turret rotatably coupled to the frame. The process turret includes a forming cam follower operatively coupled to the forming cam arrangement and a knockout cam follower operatively coupled to the knockout cam arrangement. One or both of the forming cam arrangement and / or the knockout cam arrangement includes a cam body having a cam surface defining a cam profile, the cam surface configured to be engaged by a cam follower of one of the forming cam follower or the knockout cam follower. The processing station further includes a sensing arrangement for determining a force applied to a portion of the cam surface by the cam follower of the one of the forming cam follower or the knockout cam follower.

A follower bearing 1 includes: an inner member 10 including a first body 50 and a flange 52; an outer ring 20; a plurality of rolling elements 40; and a first sealing member 30A including an annular first portion disposed between an outer peripheral surface 52A of the flange 52 and a first surface 22A and at least partially forming a sealing structure between the first portion and the outer ring 20. The first portion has an outer diameter that gradually increases toward a first end surface 52B at an end opposite to a first rolling surface 51A of the flange 52 in an axial direction.

The invention discloses a cam bearing follower sliding device which comprises a guide rail, a reciprocating sliding piece installed in the middle of the guide rail in a sliding mode, a follower body arranged in the middle of the reciprocating sliding piece and a guide rail bearing seat fixedly arranged in the middle of the lower end of the guide rail. The two guide rail baffles are symmetrically fixed to the two ends of the guide rail, the two ends of the guide rail bearing base are each provided with two negative pressure adsorption supporting mechanisms, and the forward and reverse rotation sweeping mechanism is used for synchronously moving in a reciprocating mode along with the reciprocating sliding part and sweeping dust and impurities on the two side faces of the guide rail. By arranging forward and reverse rotation sweeping mechanisms symmetrically installed at the two ends of a reciprocating sliding piece, dynamic sweeping can be conducted on the two side faces of the guide rail by means of the mode that a banister brush containing cylinder rotates forwards and reversely along with a forward and reverse rotation shaft, and the dust removal effect is improved through elastic contact between a dust removal banister brush and the surface of the rail and axial telescopic matching between a flat key groove and a limiting flat key. And the dedusting banister brush is always attached to the track profile.

The present invention provides an output lever and its assembly method, a mechanical cam shed forming mechanism, and a loom. The output lever has cam follower rollers and includes two follower rollers connected to a body. The body defines a middle plane and includes a central portion having two opposite surfaces and two attachment portions, the attachment portions being connected to the respective follower rollers by respective attachment means. The attachment means includes inner and outer fasteners each including one or more flanges. The flanges are each formed by a plate and are supported against each other in parallel planes. Each follower roller is U-shapedly mounted between the inner and outer fasteners such that the contact surfaces of the two follower rollers are on opposite sides of the middle plane. The first follower roller is attached to a first attachment portion of the two attachment portions including two opposite surfaces by a first attachment means, the opposite surfaces being connected by a flange, separated by a distance equal to the thickness of the central portion, and each coplanar with a respective surface of the central portion. The contact surface of the first follower roller is oppositely positioned with respect to the edge of the first attachment portion.

The present invention uses a bearing having one radial bearing part and two axial bearing parts, each bearing part having a plurality of rolling elements retained in a retainer. The row of rolling elements of the radial bearing part contacts the outer peripheral surface of an output shaft, and the row of rolling elements of the two axial bearing parts or of one of the axial bearing parts contacts the outer peripheral surface of the output shaft and the row of rolling elements of the other axial bearing part contacts a first ring-shaped part fixed to the output shaft, so as to form an output-shaft side raceway surface. Meanwhile, the row of rolling elements of the radial bearing part and of the two axial bearing parts contacts the surface of a second ring-shaped part that is disposed on the periphery of the output shaft and that is fixed to a housing, or the row of rolling elements of the radial bearing part and of one of the axial bearing parts directly contacts the inner surface of the housing, so as to form an outer raceway surface. Due to this configuration, the bearing is rotatably supported by the housing.

The invention relates to a cam assembly, a linear motion device, a suspension system and a vehicle, the cam assembly comprises a cam and a driving mechanism, the driving mechanism comprises a first actuating piece and a second actuating piece, the first actuating piece is configured to drive the cam to rotate by rotating around a first pivot axis of the first actuating piece, and the second actuating piece is configured to drive the cam to rotate by rotating around a second pivot axis of the second actuating piece. The central axis of the second actuating piece is parallel to and spaced from the first pivot axis, and the second actuating piece can move relative to the cam, so that the cam moves relative to the first actuating piece, and the position of the rotating center line of the cam is changed. According to the technical scheme, the rotating area of the cam can be increased so as to increase the acting stroke of the cam.

A cam follower assembly (100) for a dragging equipment detection system comprising: one of a cam (130) or a cam follower (140) adapted to be drivably connected to an impact element (200) of a dragging equipment detection system so as to move together with the impact element (200) upon reception of an impact. The cam (130) includes a cam surface (131). The cam follower (140) includes a follower element (141) and a spring (142) configured to bias the follower element (141) against the cam surface (131) of the cam (130) with a bias force. The cam follower (140) and the cam (130) are adapted to move relative to each other, while one of the cam follower (140) and the cam (130) is fixed and the other is movable. At least one of the cam surface (131) and the follower element (141) comprise a variable effective shape.

A blocking mechanism including a transmission casing and a movable pawl having a locking finger. The movable pawl is pivotably mounted in a plane about a pivot axis on the transmission casing between a locking position in which the locking finger is engaged in the locking recess and a release position in which the locking finger is disengaged from the locking recess. The movable pawl includes a cam surface. A linear actuator moves a movable carriage guided by a guide rail, in which the movable carriage includes a cam follower capable of moving on the cam surface, and a housing formed in the transmission casing, in which the guide rail is fitted in the housing.

The follower bearing module includes a follower bearing and a mounting fixture. The follower bearing includes an inner member, an outer ring, and a plurality of rolling elements. The inner member includes a large diameter portion having a first raceway surface and a shaft portion extending axially from the large diameter portion with at least a portion thereof housed in the mounting hole. The shaft portion is provided with a threaded hole that is recessed in the axial direction and has a thread groove formed on its inner circumferential surface. The mounting fixture includes a body portion that extends axially, has a thread formed on its outer circumferential surface, and is fitted into the threaded hole, and a head portion that is provided at one axial end of the body portion and extends toward the outer diameter. A strength retaining portion that maintains the strength of the follower bearing is provided between an end of the threaded hole located on the first raceway surface side of the region where the thread groove is formed and an axial end of the first raceway surface.

The roller follower exit lever of a cam-operated armor mechanism and its manufacturing method. The present invention relates to a roller follower exit lever of a cam-operated armor mechanism comprising a flat body (24), two inner flanges (30A), two outer flanges (32A), two rollers (22A), and at least two rivets (40) for attaching at least one of the outer flanges (32A) to the flat body (24). The rivets (40) pass through the body (24) and one outer flange (32A). Each rivet (40) comprises a rivet body (42), of revolution about a rivet axis (X40) and extending between a rivet head (44) and a rivet foot (46), and at least one first groove (48) formed on an external peripheral surface (S40), in which a portion of a flange (30A, 32A) forms a ridge (52). The flange (30A, 32A) comprises, on its external face, an impression (50) for the recess of the portion of the flange that forms the ridge (52).The indentation (50) is centered on the rivet axis (X40). Figure for the abbreviation: figure 4.

The invention discloses a rotation-axial conversion transmission speed change device and application thereof. The rotation-axial conversion transmission speed change device comprises a power source assembly, a driven rotating piece and a plurality of transmission pieces. The driving part is provided with a driving surface, and the driving surface is provided with an axial height profile changing in the circumferential direction, forms rolling or sliding contact with one end of the transmission part and drives the transmission part to move axially; the other end of the transmission part is in meshed contact with the end face teeth or the circumferential teeth of the driven rotating part in the axial movement process, or indirectly pushes the driven rotating part to rotate through a rolling body arranged between the transmission part and the driven rotating part. Through an intermittent transmission mechanism that rotation drives axial displacement and axial displacement pushes rotation output, speed change, quick response and a compact structure are achieved. The invention can be applied to the scenes of transmissions, clutches, overrunning clutch devices, servo braking devices, robot joint modules and the like.

An engine valve actuation system includes a camshaft rotatable in an engine and a composite collar including a mounting sleeve, a guide sleeve, and a bridge connecting the guide sleeve to the mounting sleeve in cantilever fashion. A first valve lifter is interference fit in the mounting sleeve, and a second valve lifter is slide fit in the guide sleeve. First and second lifter bores accommodating the first and second valve lifters are congruent, and the first and second valve lifters can be substantially identical. The composite collar reciprocates with the interference fit first valve lifter, slideably accommodates the slide fit second valve lifter, and restricts rotation of both in service.

A processing station for a die necking machine includes a frame, a forming cam arrangement fixedly coupled to the frame, a knockout cam arrangement fixedly coupled to the frame, and a process turret rotatably coupled to the frame. The process turret includes a forming cam follower operatively coupled to the forming cam arrangement and a knockout cam follower operatively coupled to the knockout cam arrangement. One or both of the forming cam arrangement and / or the knockout cam arrangement includes a cam body having a cam surface defining a cam profile, the cam surface configured to be engaged by a cam follower of one of the forming cam follower or the knockout cam follower. The processing station further includes a sensing arrangement for determining a force applied to a portion of the cam surface by the cam follower of the one of the forming cam follower or the knockout cam follower.

The invention relates to a driving device capable of directly converting rotary motion into linear reciprocating motion, in particular to a driving device capable of directly converting the rotary motion into the linear reciprocating motion by using three parts, namely two end cams capable of realizing complementation and mutual meshing, and a machine body. According to the technology, a pestle type washing machine with the washing effect closer to that achieved through hand rubbing or wooden stick beating can be simulated, and due to the fact that the path for doing work on clothes is shortened and power consumption is reduced, low abrasion, high cleanliness, water saving, electricity saving and time saving become possible. By means of the technology, a traditional piston type air compressor or an internal combustion engine can be slimmed, after a crankshaft and a connecting rod in the piston type air compressor or the internal combustion engine are removed, abrasion, vibration, noise and the size of the whole machine can be reduced, and efficiency and response speed are improved.

A follower bearing module includes a follower bearing, a fixing element, and a fastening element. The follower bearing includes an inner member, an outer ring having, on its inner circumferential surface, an annular second raceway surface that faces a first raceway surface, and a plurality of rolling elements arranged on an annular raceway along the first and second raceway surfaces so as to contact the first and second raceway surfaces. The inner member includes a large diameter portion having the first raceway surface thereon, and a shaft portion extending from the large diameter portion in the axial direction and having at least a portion accommodated in a mounting hole. The fixing element includes a cylindrical portion disposed in a shaft through hole and having a threaded groove on its inner circumferential surface, and a plate-shaped portion provided at one end of the cylindrical portion in the axial direction and extending radially outward. The fastening element fastens the follower bearing and the fixing element with the cylindrical portion being disposed in the shaft through hole. At least one of the follower bearing and the fixing element includes a rotation prevention mechanism operative to prevent the rotation of the fixing element.

A piston pump has a crankshaft chamber (146) and a plurality of passages (148) extending from the crankshaft chamber. A crankshaft (108) rotatably mounted in the crankshaft chamber has a rotation axis and a plurality of cams (110) distributed along the axis. Each cam has a plurality of noses (178), all having a nose radius, circumferentially alternating around the axis with a plurality of heels (180), all having a heel radius that is less than the nose radius, and a cam material abrasion resistance. A plurality of pistons (104) corresponding to the cams and slidably mounted in the passages each have a shaft end (1861). A sacrificial crown (112) removably connected to the shaft end has a cam engagement side (190) and a crown material abrasion resistance that is less than the cam material abrasion resistance. A plurality of resiliently compressible biases (200) bias the pistons to maintain contact between the cam engagement sides (190) and the cams (110) as the crankshaft rotates.

A piston pump includes a pump housing with an extrusion-formed crankshaft chamber having a top chamber wall integrally extrusion-formed with at least one side chamber wall and a bottom chamber wall. Each wall has an extrusion-formed interior and exterior surface. The pump housing also includes a pumping chamber and one or more piston passages. A crankshaft is rotatably mounted within the crankshaft chamber and extends along a longitudinal crankshaft rotation axis. One or more cams are distributed along the crankshaft axis. One or more pistons are provided, each corresponding to a cam and slidably mounted in a piston passage between a nose position and a heel position. Each piston includes a piston shaft, with a first shaft end positioned in the crankshaft chamber and having a cam engagement side in contact with the corresponding cam. The crankshaft chamber extrusion direction is parallel to the crankshaft axis.

An actuation assembly for a reciprocating surgical tool includes a reciprocating shaft extending along a longitudinal axis and a rotating body operably connected to the reciprocating shaft. The rotating body forms opposing guide profiles defining an extension profile and a retraction profile of the reciprocating shaft. A rotation of the rotating body relative to the reciprocating shaft causes the opposing guide profiles to operably engage the reciprocating shaft causing the reciprocating shaft to extend responsive to the extension profile and retract responsive to the retraction profile along the longitudinal axis.

The invention relates to a method for producing a roller tappet (44) for a pump or valve train of an internal combustion engine, comprising a cylindrical housing (43) which serves to guide the roller tappet (44) in a longitudinally movable manner in a bore in an internal combustion engine, characterized in that the housing (43) is produced as a cylindrical shell component (1) with at least one flattened portion (5, 6, 7, 8) on the outer diameter in a lightweight construction, and at least one edge (11 to 18) formed by the flattened portion (5, 6, 7, 8) in a central region on the outer diameter of the shell component (1) located between the axial ends of the shell component (1) is deburred by turning with low notch effect. The invention further relates to a forming tool (31, 34, 36) for producing a roller tappet (44) using such a method. The invention further relates to a roller tappet (44) which is produced in such a method in a lightweight construction.

Abstract: A follower bearing includes an inner member including an inner wall surface defining a through hole, an outer ring, and a plurality of rolling elements. A portion of the through hole with a smallest diameter has a diameter that is 40% or more of an outside diameter of a portion of the inner member with a smallest outside diameter. The inner member is composed of a steel containing not less than 0.12 mass% and not more than 0.39 mass% carbon, not less than 0.05 mass% and not more than 0.40 mass% silicon, not less than 0.55 mass% and not more than 0.95 mass% manganese, and not less than 0.60 mass% and not more than 1.25 mass% chromium, with the balance consisting of iron and unavoidable impurities, and includes a carburized layer so as to constitute at least a part of a surface thereof. In the carburized layer, the grain size number of prior austenite grains as specified in JIS G 0551 is not less than 8.6.

A switching roller finger follower comprises an inner arm assembly. A pair of outer arms surround the inner arm assembly. A pivot axle connects the inner arm assembly to pivot with respect to the pair of outer arms from a starting position to a lost motion position. A latch assembly comprises a latch selectively movable from a latched position latching the inner arm assembly to move dependent with the outer arms and an unlatched position unlatching the inner arm assembly to pivot independent of the outer arms. A stop pin spans between the pair of outer arms and through an inner port in an axle of inner arm assembly. The stop pin comprises a clearance fit with the inner port, and the stop pin is configured pivotable independent of the outer arms. At least one return spring biases the stop pin toward the starting position.