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US 11,821,318 B2Granted
Cam machine with adjustment mechanism
OwnerBoyan Kirilov Bahnevinventor
Life of this patent
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Abstract
The invention relates to a cam machine with a control mechanism which will find application in various fields of mechanical engineering, such as compressor machines, hydraulic pumps, internal combustion engines and other types of engines in various land, sea and air vehicles, or in stationary units. The created cam machine improves the contact between the cam profiles (15a, 15b) of the cam bushings (16a, 16b) and the followers (1a, 1b). The main improvement of the machine is in the design of the regulating mechanism, which increases the reliability and the service life of the cam machine. In addition, simple and reliable control mechanisms are integrated in the machine, which at the same time simplifies the process of adjusting the cam machines.
Claims27
A cam machine comprising:
- a housing (22, 31 and 21), a first and a second cylinder (26), a first piston (25) moving in the first cylinder (26) and a second piston (25) moving in the second cylinder (26), a cylindrical tubular 3D cam (20) with a cam channel on an inner cylindrical surface which channel is made so that a line forming its cross section is a concave line having two cam profiles (15a, 15b) and a bottom (59) between them, which is laterally located relative to an axis of the cylindrical tubular 3D cam (20) and at least two asynchronously moving followers (1a, 1b) located opposite each other, each follower (1a, 1b) containing two arms (37) connected respectively to one of the first and second pistons (25), wherein the two arms (37) are spaced at an angle to each other and are provided with tubular main bearing journals (2) with main rollers (3) each having an axis and placed in bearings at a free end of the respective arms (37) and each follower (1a, 1b) further comprises cylindrical plungers (6) located in the tubular main bearings journals (2), which cylindrical plungers (6) comprise additional bearing journals (4) bearing additional rollers (5), performing both rectilinear and rotational movement in a direction and around axes of the respective main rollers (3) so that each main roller and additional roller (3 and 5) is in contact with its respective profile (15a or 15b) of the cam channel, characterized in that the tubular main bearing journals (2) have threaded holes (13) in which screw regulators (7) are mounted, contacting indirectly or directly with the cylindrical plungers (6), where the indirect contact between the cylindrical plungers (6) and adjacent screw regulators (7) is made through elastic and bearing elements (8) and (10), and the direct contact is realized by pins (11), each of which is part of the corresponding adjacent screw regulator (7), where maximum clearances (57) formed by the indirect contacts between the pins (11) and the plungers (6) are at least equal to strokes of rectilinear motions of the plungers (6) at complete rotation of the cylindrical tubular 3D cam (20), and connections between each plunger (6) and the elements located in its respective bearing journal (2) are such that the plungers (6) are freely removable from the adjacent bearing journals (2) when the cam machine is disassembled.
A cam machine comprising:
- a housing (22, 31 and 21), a cylinder (26), a piston (25) moving in the cylinder (26), a cylindrical tubular 3D cam (20) with a cam channel on an inner cylindrical surface which channel is made so that a line forming its cross section is a concave line having two cam profiles (15a, 15b) and a bottom (59) between them, which is laterally located relative to an axis of the cylindrical tubular 3D cam (20) and an asynchronously moving followers (1a, 1b) located opposite each other, each follower (1a, 1b) having two arms (37) connected respectively to one of the piston (25) and a balancing element (60), wherein the two arms (37) are spaced at an angle to each other and are provided with tubular main bearing journals (2) with main rollers (3) each having an axis placed in bearings at a free end of the respective arms (37) and each follower (1a, 1b) further comprises cylindrical plungers (6) located in the tubular main bearings journals (2), which cylindrical plungers (6) comprise additional bearing journals (4) bearing additional rollers (5), performing both rectilinear and rotational movement in a direction and around axes of the respective main rollers (3) so that each main roller and additional roller (3 and 5) is in contact with its respective profile (15a or 15b) of the cam channel, characterized in that the tubular main bearing journals (2) have threaded holes (13) in which screw regulators (7) are mounted, contacting indirectly or directly with the cylindrical plungers (6), where the indirect contact between the cylindrical plungers (6) and the adjacent screw regulators (7) is made through elastic and bearing elements (8) and (10), and the direct contact is realized by pins (11), each of which is part of the corresponding adjacent screw regulator (7), where maximum clearances (57) formed by the indirect contacts between the pins (11) and the plungers (6) are at least equal to strokes of rectilinear motions of the plungers (6) at complete rotation of the cylindrical tubular 3D cam (20), and connections between each plunger (6) and the elements located in its bearing journal (2) are such that the plungers (6) are freely removable from the bearing journals (2) when the cam machine is disassembled.
Dependencies are inferred from the claim text.