An aluminum alloy hub lathe fixture, which includes a main plate, a mounting seat, a hydraulic power clamping head, a pull rod, a sliding seat, a connecting pin, a fan-shaped clamping jaw, a sealing cover, a deflection block, a deflection shaft, a centrifugal force balance block, a centrifugal mechanism base, a spring and screws, wherein the main plate and the mounting seat are connected together through screws, so that a housing of the entire fixture is formed; the hydraulic power clamping head is fixed on the mounting seat through screws; one end of the pull rod is mounted on the hydraulic power clamping head through screws, and the other end of the pull rod is connected with the sliding seat through the connecting pin; the fan-shaped clamping jaw is fixed on the sliding seat through screws.

Chuck arrangement (100) comprising at least three chuck jaws (110, 120, 130), each arranged to be radially displaceable into a respective clamping position in which it applies a radial clamping force (C) to a held workpiece (W). Each chuck jaw comprises fixing means. The chuck arrangement further comprises one respective counterweight (140, 150, 160) associated with each of said chuck jaw and mechanically connected to the chuck jaw in question so that the counterweight pulls the chuck jaw in a pull direction having a non-zero component radially towards a centre of rotation of the chuck arrangement as the chuck arrangement as it rotates. The invention is characterised in that each one of said chuck jaws comprises a radially displaceable backing chuck jaw part (113, 123, 133) and a clamping chuck jaw part (114, 124, 134) and that the backing chuck jaw part is mechanically connected to the counterweight. The invention also relates to a method.

A wheel fixture is disclosed. A main shaft drives a first positioning pull rod on a chuck body to extend and contract in the radial direction via a tightening screw, a clamping jaw is at a position within the travel range of extension and contraction, a wheel is positioned and clamped by the fixture, airtight support blocks are pressed down by the wheel and flush with the support plane of the clamping jaw, at this time, airtight ejector rods press second O rings to prevent air from flowing out of the airtight detection position, a detection system of a machine tool detects a preset air pressure value which indicate that the wheel has been placed correctly, and if the wheel is not placed correctly on the fixture, the machine tool will alarm through the detected pressure feedback.

A lathe fixture for machining a hub is characterized in that a power chuck (10) is installed inside a base (5), a positioning connecting block (6) is installed on the power chuck (10), a fan-shaped claw (7) is installed on the positioning connecting block (6), a pressing block (18) is installed on the base (5), and a first support plate (16) is arranged; the shell (2) is arranged in a back cavity of the base (5) from bottom to top, the force transmission shaft (4) penetrates through the base (5), the force transmission rod (3) is fixedly arranged in a groove of the shell (2), the first support plate (16) and the second support plate (14) are respectively arranged at the front end and the rear end of the shell (2), the balance block (15) is fixed between the first support plate (16) and the second support plate (14) through two guide posts (17), the spring (13) is arranged in the groove of the balance block (15) and the second support plate (14), and the cover plate (1) is fixedly arranged at the lower end of the shell (2); the invention provides a clamp with a centrifugal force compensation mechanism.

Chuck arrangement (100) comprising at least three chuck jaws (110, 120, 130), each arranged to be radially displaceable into a respective clamping position in which it applies a radial clamping force (C) to a held workpiece (W). Each chuck jaw comprises fixing means. The chuck arrangement further comprises one respective counterweight (140, 150, 160) associated with each of said chuck jaw and mechanically connected to the chuck jaw in question so that the counterweight pulls the chuck jaw in a pull direction having a non-zero component radially towards a centre of rotation of the chuck arrangement as the chuck arrangement as it rotates. The invention is characterised in that each one of the said counterweights comprises at least one slot for a detachable weight. The invention also relates to a method.

A lathe fixture for machining a hub is characterized in that a power chuck (10) is installed inside a base (5), a positioning connecting block (6) is installed on the power chuck (10), a fan-shaped claw (7) is installed on the positioning connecting block (6), a pressing block (18) is installed on the base (5), and a first support plate (16) is arranged; the shell (2) is arranged in a back cavity of the base (5) from bottom to top, the force transmission shaft (4) penetrates through the base (5), the force transmission rod (3) is fixedly arranged in a groove of the shell (2), the first support plate (16) and the second support plate (14) are respectively arranged at the front end and the rear end of the shell (2), the balance block (15) is fixed between the first support plate (16) and the second support plate (14) through two guide posts (17), the spring (13) is arranged in the groove of the balance block (15) and the second support plate (14), and the cover plate (1) is fixedly arranged at the lower end of the shell (2); the invention provides a clamp with a centrifugal force compensation mechanism.

A wheel fixture is disclosed. A main shaft drives a first positioning pull rod on a chuck body to extend and contract in the radial direction via a tightening screw, a clamping jaw is at a position within the travel range of extension and contraction, a wheel is positioned and clamped by the fixture, airtight support blocks are pressed down by the wheel and flush with the support plane of the clamping jaw, at this time, airtight ejector rods press second O rings to prevent air from flowing out of the airtight detection position, a detection system of a machine tool detects a preset air pressure value which indicate that the wheel has been placed correctly, and if the wheel is not placed correctly on the fixture, the machine tool will alarm through the detected pressure feedback.

An aluminum alloy hub lathe fixture, which includes a main plate, a mounting seat, a hydraulic power clamping head, a pull rod, a sliding seat, a connecting pin, a fan-shaped clamping jaw, a sealing cover, a deflection block, a deflection shaft, a centrifugal force balance block, a centrifugal mechanism base, a spring and screws, wherein the main plate and the mounting seat are connected together through screws, so that a housing of the entire fixture is formed; the hydraulic power clamping head is fixed on the mounting seat through screws; one end of the pull rod is mounted on the hydraulic power clamping head through screws, and the other end of the pull rod is connected with the sliding seat through the connecting pin; the fan-shaped clamping jaw is fixed on the sliding seat through screws.