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US 11,033,946 B2Granted
Actuator with variable speed servo motor for redraw assembly
AssigneeStolle Machinery Company, LLC
InventorDonald Ray Haulsee
Life of this patent
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Abstract
An actuator assembly for a redraw sleeve that operates independently of the ram drive mechanism is provided. The actuator assembly utilizes a servomotor. The servomotor is structured to provide its output shaft with a variable rotation speed so as to accommodate the need for the redraw sleeve to be in selected locations at specific times.
Claims12
An actuator assembly for a redraw assembly, said actuator assembly comprising:
- a servomotor including a rotating output shaft;
- wherein said servomotor produces a selectable rotational speed in said servomotor output shaft;
- an eccentric journal assembly, said eccentric journal assembly coupled to said servomotor output shaft;
- wherein rotation of said servomotor output shaft causes said eccentric journal assembly to rotate between at least a first, rearward position and a second, forward position;
- wherein said eccentric journal assembly also rotates through an acceleration position and a deceleration position;
- said acceleration position occurring just prior to said eccentric journal assembly's second, forward position;
- said deceleration position occurring just prior to said eccentric journal assembly's first, rearward position;
- said eccentric journal assembly includes a shaft and an eccentric journal;
- said eccentric journal assembly shaft having an axis of rotation;
- said eccentric journal being substantially circular;
- wherein said eccentric journal is coupled to said eccentric journal assembly shaft with the center of said eccentric journal spaced from said eccentric journal assembly shaft axis of rotation;
- a connecting rod assembly including a connecting rod, said connecting rod coupled to said eccentric journal assembly;
- wherein said connecting rod moves between a first, rearward position and a second, forward position, respectively, corresponding to said eccentric journal assembly first position and said eccentric journal assembly second position;
- wherein said connecting rod is structured to be coupled to a movable redraw sleeve;
- a movable redraw sleeve couple to said connecting rod;
- said servomotor has a faster rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- said servomotor has a slower rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- wherein, said connecting rod moves at a faster speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- wherein, said connecting rod moves at a slower speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- wherein, said movable redraw sleeve moves at a faster speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- and
- wherein, said movable redraw sleeve moves at a slower speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position.
19 more elements
An actuator assembly for a redraw assembly, said actuator assembly comprising:
- a servomotor including a rotating output shaft;
- wherein said servomotor produces a selectable rotational speed in said servomotor output shaft;
- an eccentric journal assembly, said eccentric journal assembly coupled to said servomotor output shaft;
- wherein rotation of said servomotor output shaft causes said eccentric journal assembly to rotate between at least a first, rearward position and a second, forward position;
- wherein said eccentric journal assembly also rotates through an acceleration position and a deceleration position;
- said acceleration position occurring just prior to said eccentric journal assembly's second, forward position;
- said deceleration position occurring just prior to said eccentric journal assembly's first, rearward position;
- said eccentric journal assembly includes a shaft and an eccentric journal;
- said eccentric journal assembly shaft having an axis of rotation;
- said eccentric journal being substantially circular;
- wherein said eccentric journal is coupled to said eccentric journal assembly shaft with the center of said eccentric journal spaced from said eccentric journal assembly shaft axis of rotation;
- and
- wherein said redraw sleeve is a collapsing redraw sleeve structured to change between a first elongated configuration and a second collapsed configuration.
10 more elements
A redraw assembly comprising:
- a movable redraw sleeve;
- a redraw die;
- said movable redraw sleeve structured to move between a first position, wherein said movable redraw sleeve is spaced from said redraw die, and a second position, wherein said movable redraw sleeve is disposed immediately adjacent said redraw die;
- an actuator assembly for a redraw assembly including a servomotor;
- said servomotor including a rotating output shaft;
- said servomotor coupled to said redraw sleeve;
- wherein said servomotor produces a selectable rotational speed in said servomotor output shaft;
- an eccentric journal assembly, said eccentric journal assembly coupled to said servomotor output shaft;
- wherein rotation of said servomotor output shaft causes said eccentric journal assembly to rotate between at least a first, rearward position and a second, forward position;
- wherein said eccentric journal assembly also rotates through an acceleration position and a deceleration position;
- said acceleration position occurring just prior to said eccentric journal assembly's second, forward position;
- said deceleration position occurring just prior to said eccentric journal assembly's first, rearward position;
- said eccentric journal assembly includes a shaft and an eccentric journal;
- said eccentric journal assembly shaft having an axis of rotation;
- said eccentric journal being substantially circular;
- wherein said eccentric journal is coupled to said eccentric journal assembly shaft with the center of said eccentric journal spaced from said eccentric journal assembly shaft axis of rotation;
- a connecting rod assembly including a connecting rod, said connecting rod coupled to said eccentric journal assembly;
- wherein said connecting rod moves between a first, rearward position and a second, forward position, respectively, corresponding to said eccentric journal assembly first position and said eccentric journal assembly second position;
- wherein said connecting rod is structured to be coupled to a movable redraw sleeve;
- said movable redraw sleeve coupled to said connecting rod;
- said servomotor has a faster rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- said servomotor has a slower rotational speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- wherein, said connecting rod moves at a faster speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- wherein, said connecting rod moves at a slower speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- wherein, said movable redraw sleeve moves at a faster speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position;
- and
- wherein, said movable redraw sleeve moves at a slower speed when said eccentric journal assembly is moving between the first, rearward position and the second, forward position.
24 more elements
A redraw assembly comprising:
- a movable redraw sleeve;
- a redraw die;
- said movable redraw sleeve structured to move between a first position, wherein said movable redraw sleeve is spaced from said redraw die, and a second position, wherein said movable redraw sleeve is disposed immediately adjacent said redraw die;
- an actuator assembly for a redraw assembly including a servomotor;
- said servomotor including a rotating output shaft;
- said servomotor coupled to said redraw sleeve;
- wherein said servomotor produces a selectable rotational speed in said servomotor output shaft, said eccentric journal assembly coupled to said servomotor output shaft;
- wherein rotation of said servomotor output shaft causes said eccentric journal assembly to rotate between at least a first, rearward position and a second, forward position;
- wherein said eccentric journal assembly also rotates through an acceleration position and a deceleration position;
- said acceleration position occurring just prior to said eccentric journal assembly's second, forward position;
- said deceleration position occurring just prior to said eccentric journal assembly's first, rearward position said eccentric journal assembly includes a shaft and an eccentric journal;
- said eccentric journal assembly shaft having an axis of rotation;
- said eccentric journal being substantially circular;
- and
- wherein eccentric journal is couple to said eccentric journal assembly shaft with the center of said eccentric journal spaced from said eccentric journal assembly shaft axis of rotation;
- and
- wherein said redraw sleeve is a collapsing redraw sleeve structured to change between a first elongated configuration and a second collapsed configuration.
14 more elements
Dependencies are inferred from the claim text.