CN104608415B - A kind of open-core type servo main transmission mechanism being applied to NC turret punch machine - Google Patents
A kind of open-core type servo main transmission mechanism being applied to NC turret punch machine Download PDFInfo
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- CN104608415B CN104608415B CN201510076875.4A CN201510076875A CN104608415B CN 104608415 B CN104608415 B CN 104608415B CN 201510076875 A CN201510076875 A CN 201510076875A CN 104608415 B CN104608415 B CN 104608415B
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Abstract
A kind of open-core type servo main transmission mechanism being applied to NC turret punch machine.Relate to press structure field.Propose a kind of delicate structure, easy to use and result of use good, under the prerequisite retaining servo-pressing machine original function, effectively solve the open-core type servo main transmission mechanism being applied to NC turret punch machine of the problems brought because of shaft coupling.Comprise fixed mount, bent axle, connecting rod, slide block and core motor, described skid is connected to the bottom of fixed mount, described bent axle comprises crank throw and is located at the axle journal of crank throw both sides, wherein an axle journal is also provided with away from the side of described crank throw the outrigger shaft be connected as a single entity with axle journal, axle journal described in two is hinged on the top of described fixed mount and outrigger shaft is positioned at outside fixed mount, and described connecting rod top is hinged on crank throw and connecting rod bottom is hinged on slide block; Described core motor comprises the double stator doing shell and the rotor be located in stator.This case has higher acceleration, and has lower energy consumption.
Description
Technical field
The present invention relates to press structure field, particularly relate to servo electric machine type NC turret punch machine the improvement of main drive gear.
Background technology
Servo-pressing machine is a kind of novel metal former adopting Servo Drive Technology's.Power is provided owing to relying on controlled driving element (i.e. servomotor), servo-pressing machine not only has the high motion flexibility of hydraulic press, and there is the high efficiency of punching machine, having in addition and improve product quality, save energy and reduce the advantage of work noise, is the important development direction in Forging equipment future.
In prior art, usually adopt shaft coupling to connect the bent axle on servomotor and servo-pressing machine top, thus realize the transmission of power; Specifically as State Bureau is called " servounit forcing press ", application number for shown in the Chinese patent literature of " 201210079652.X " in the portion that on August 1st, 2012 announces.
But this type of servo-pressing machine adopting shaft coupling to transmit power has following defect usually: one, shaft coupling very easily damages in power transmission process, need change it timely, thus brings the problems such as use cost is high, operation stability is poor; Two, because slide block will bear the impact of the large load of high frequency in running, thus the fatigue rupture (especially with shaft coupling for) that will make bent axle, shaft coupling, servomotor occur in various degree, bring great impact to the reliability of equipment; Three, version of the prior art is by comparatively large for the equipment size made along servomotor axis, will occupy more space; Four, because shaft coupling self when using will exist great rotary inertia; Calculate according to after practical application, the rotary inertia of shaft coupling self accounts for 70 ~ 80% of whole load equivalent rotary inertia, like this, on the one hand, causes the acceleration of system poor, bring great restriction to the process velocity of workpiece by because inertia is large; On the other hand, because servomotor is accelerating frequently, in moderating process, most of energy consumption of servomotor all by consume by the rotary inertia of shaft coupling, great energy consumption therefore will be brought to increase.
Summary of the invention
The present invention is directed to above problem, propose a kind of delicate structure, easy to use and result of use good, under the prerequisite retaining servo-pressing machine original function, effectively solve the open-core type servo main transmission mechanism being applied to NC turret punch machine of the problems brought because of shaft coupling.
Technical scheme of the present invention is: comprise fixed mount, bent axle, connecting rod, slide block and core motor, described skid is connected to the bottom of fixed mount, described bent axle comprises crank throw and is located at the axle journal of crank throw both sides, wherein an axle journal is also provided with away from the side of described crank throw the outrigger shaft be connected as a single entity with axle journal, axle journal described in two is hinged on the top of described fixed mount and outrigger shaft is positioned at outside fixed mount, described connecting rod top is hinged on crank throw and connecting rod bottom is hinged on slide block, and slide block is pumped under the drive of bent axle;
Described core motor comprises the double stator doing shell and the rotor be located in stator, and described rotor empty set, on described outrigger shaft, is connected by synchronous rotary assembly between described rotor and outrigger shaft, makes rotor and outrigger shaft synchronous rotary; Described stator is fixedly connected on the outside of fixed mount, and bent axle is rotated under the driving of core motor.
Described rotor away from one end of described fixed mount and stator hinged away from one end of described fixed mount.
Described synchronous rotary assembly is expansion sleeve.
Described synchronous rotary assembly comprises inner sleeve, drive socket, outer sleeve, at least one group of disc spring, some viscous damping blocks and some transmission steel balls; Described inner sleeve is socketed on described outrigger shaft, and rotor is socketed on described outer sleeve, and described drive socket is located between described inner sleeve and outer sleeve, and the equal concentric of described inner sleeve, drive socket, outer sleeve is arranged;
The outer wall of described inner sleeve offers some strip grooves one, the inwall of described drive socket offers some strip grooves two, described strip groove one is corresponding with strip groove 211 and width is equal, described viscous damping block is contained between described strip groove one and strip groove two, makes to leave gap between the outer wall of inner sleeve and the inwall of drive socket;
The middle part of the inwall of described outer sleeve is provided with annular protrusion one, the two ends of the outer wall of described drive socket are respectively equipped with annular protrusion two and annular protrusion three, and described annular protrusion three is towards the end face of described annular protrusion one in external diameter progressively increases from annular protrusion one side inclined plane shape and annular protrusion three is evenly equipped with some ball-and-sockets three on the end face of described annular protrusion one; Described annular protrusion one is towards the end face of described annular protrusion three in internal diameter progressively reduces from annular protrusion three side inclined plane shape and annular protrusion one is evenly equipped with some ball-and-sockets one on the end face of described annular protrusion three, described ball-and-socket one and ball-and-socket three one_to_one corresponding, described transmission steel ball is contained between described ball-and-socket one and ball-and-socket three; Disc spring described at least one group is against between described annular protrusion one and the end face of annular protrusion two, and transmission steel ball is pressed between annular protrusion one and annular protrusion three.
Described synchronous rotary assembly comprises two groups of disc springs, and described in two groups, disc spring is oppositely arranged.
Described transmission steel ball is cylindric, and the side surface of described cylinder is in the arc surfaced outwards arched upward and the axle center of cylinder is parallel towards the end face of annular protrusion one with annular protrusion three.
Described fixed mount is provided with annular protrusion towards the end face of described crank throw, described annular protrusion and described axle journal concentric, and described crank throw offers arc groove on the end face of described annular protrusion, described arc groove and described annular protrusion adaptation.
The present invention eliminates shaft coupling of the prior art from structure, but stator is fixedly connected on the outside of fixed mount, thus make core motor skip shaft coupling directly to drive bent axle, thus significantly reduce use cost, improve operation stability, extend service life and reduce equipment volume.Meanwhile, through application, calculate and show, in this case, the rotary inertia of load is only prior art 30 ~ 40%, i.e. core motor load reduction 60 ~ 70%, thus makes this case to have higher acceleration, and has lower energy consumption.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention,
Fig. 2 is the top view of Fig. 1,
Fig. 3 be the A-A of Fig. 2 to sectional view,
Fig. 4 is the stereogram of Fig. 1,
Fig. 5 is the structural representation of the second embodiment of synchronous rotary assembly in the present invention,
Fig. 6 is the right view of Fig. 5,
Fig. 7 be the B-B of Fig. 6 to sectional view,
Fig. 8 is the profile of outer sleeve,
Fig. 9 is the structural representation of drive socket;
In figure, 1 is fixed mount, and 2 is bent axles, and 21 is crank throws, and 22 is outrigger shafts, 3 is connecting rods, and 4 is slide blocks, and 5 is core motors, 51 is stators, and 52 is rotors, and 6 is synchronous rotary assemblies, 61 is inner sleeves, and 62 is drive sockets, and 63 is outer sleeves, 64 is disc springs, and 65 is viscous damping blocks, and 66 is transmission steel balls, 67 is annular protrusions one, and 68 is annular protrusions two, and 69 is annular protrusions three.
Detailed description of the invention
The present invention as Figure 1-4, comprise fixed mount 1, bent axle 2, connecting rod 3, slide block 4 and core motor 5, described slide block 4 is slidably connected at the bottom of fixed mount 1 by moving sets, described bent axle 2 comprises crank throw 21 and is located at the axle journal of crank throw 21 both sides, wherein an axle journal is also provided with away from the side of described crank throw 21 outrigger shaft 22 be connected as a single entity with axle journal, axle journal described in two is by the top of bearing hinge connection at described fixed mount 1, and outrigger shaft 22 is positioned at outside fixed mount 1, described connecting rod 2 top by bearing hinge connection on crank throw 21, and connecting rod 3 bottom is hinged on slide block 4, slide block 4 is pumped under the drive of bent axle 2,
Described core motor 5 comprises the double stator 51 doing shell and the rotor 52 be located in stator 51, described rotor 52 empty set is on described outrigger shaft 22, connected by synchronous rotary assembly 6 between described rotor 52 and outrigger shaft 22, make rotor 52 and outrigger shaft 22 synchronous rotary; Described stator 51 is fixedly connected on the outside of fixed mount 1, and bent axle 2 is rotated under the driving of core motor 5.
Described rotor 52 away from one end of described fixed mount 1 and stator 51 hinged away from one end of described fixed mount 1.Make the rotation of rotor more stable.
Due to servo-pressing machine, operationally to have the slide block working time short, greatly stressed, thus cause outrigger shaft very easily to produce vibration under the impact of bent axle; Like this, will bring great additional load to servomotor, serious even trains off the rotor of servomotor, and servomotor is scrapped.
To this, this case adds synchronous rotary assembly between rotor and outrigger shaft, and carries out representativeness explanation with following two kinds of embodiments:
Embodiment one:
Described synchronous rotary assembly 6 is expansion sleeve.This case adds expansion sleeve between rotor and outrigger shaft, make while guarantee coupling stiffness, structural damping by expansion sleeve is absorbed by the vibration of outrigger shaft, thus effectively alleviate the impact of the position on rotor produced because of the vibration of outrigger shaft, effectively improve stability and the reliability of operation of equipment.
Embodiment two, as shown in figures 5-9:
Described synchronous rotary assembly 6 comprises inner sleeve 61, drive socket 62, outer sleeve 63, at least one group of disc spring 64, some viscous damping blocks 65 and some transmission steel balls 66; Described inner sleeve 61 is socketed on described outrigger shaft 22, and rotor 52 is socketed on described outer sleeve 63, and described drive socket 62 is located between described inner sleeve 61 and outer sleeve 63, and described inner sleeve 61, drive socket 62, outer sleeve 63 all concentric are arranged;
The outer wall of described inner sleeve 61 offers some strip grooves one, the inwall of described drive socket 62 offers some strip grooves two, described strip groove one is corresponding with strip groove 211 and width is equal, described viscous damping block 65 is contained between described strip groove one and strip groove two, makes to leave gap between the inwall of the outer wall of inner sleeve 61 and drive socket 62; Like this, by the setting of " viscous damping block " and " gap ", while making to be unlikely to produce excessive relative displacement guarantee transmission accuracy between inner sleeve and outer sleeve, by the viscous damping block be made up of viscous damping material, the mechanical energy (kinetic energy) that vibration produces is converted into heat energy (being the process of a power consumption, vibration damping), serves the effect of buffering, vibration damping.
The middle part of the inwall of described outer sleeve 63 is provided with annular protrusion 1, the two ends of the outer wall of described drive socket 62 are respectively equipped with annular protrusion 2 68 and annular protrusion 3 69, and described annular protrusion 3 69 is towards the end face of described annular protrusion 1 in external diameter progressively increases from annular protrusion 1 side inclined plane shape and annular protrusion 3 69 is evenly equipped with some ball-and-sockets three on the end face of described annular protrusion 1; Described annular protrusion 1 is towards the end face of described annular protrusion 3 69 in internal diameter progressively reduces from annular protrusion 3 69 side inclined plane shape and annular protrusion 1 is evenly equipped with some ball-and-sockets one on the end face of described annular protrusion 3 69, described ball-and-socket one and ball-and-socket three one_to_one corresponding, described transmission steel ball 66 is contained between described ball-and-socket one and ball-and-socket three; Disc spring 64 described at least one group is against between described annular protrusion 1 and the end face of annular protrusion 2 68, and transmission steel ball 66 is pressed between annular protrusion 1 and annular protrusion 3 69.Like this, once rotor loading is excessive, the annular protrusion one of outer sleeve inside will oppress disc spring, thus make ball-and-socket one and transmission steel ball " disengagement ", and then rotor is dallied, and provide effective overload protection to core motor; And when overload is eliminated, ball-and-socket one is fitted continuing under the compressing of disc spring with transmission steel ball, thus proceed effective transmission.And in prior art, there is no overload protection, when surprisingly there is overload in lathe, drift stops instantaneously owing to transshipping, in transmission system, all parts are rigid element, the elastic strain potential energy that very large kinetic energy all needs to be converted into system unit can be produced because transmission system is in High Rotation Speed state, 1, internal system part can produce very large stress, very easily damages; 2 or system relied on the link of frictional force transmission (as expansion sleeve) easily to produce relative sliding, " zero point " of lathe is caused to lose (the respective function relation between punch stroke and electric machine rotation angle, when drift is in bottom dead centre, the phase angle of corresponding motor is " zero point " of lathe).
For the problems referred to above 1, can effectively be solved by the overload protection function of synchronous rotary assembly; For the problems referred to above 2, because transmission steel balls some in this case are uniformly distributed (namely spacing is equal), therefore, when there is overload, the angle of relative rotation between inner sleeve with outer sleeve will be the integral multiple of a fixed value (angle of the line in the axle center of adjacent drive steel ball and drive socket), thus make system be easy to reorientate zero point after overload.
Described synchronous rotary assembly comprises disc spring 64 described in two groups of disc springs 64, two groups and is oppositely arranged.On the one hand, the two groups of disc springs be oppositely arranged provide enough large rigidity; On the other hand, also by promoting the mode of compression travel, space is left to the relative motion of outer sleeve and drive socket.
Described transmission steel ball 66 is in cylindric, and the side surface of described cylinder is in the arc surfaced outwards arched upward and the axle center of cylinder is parallel towards the end face of annular protrusion one with annular protrusion three.Thus bring significant lifting with this type of " special-shaped spherical shape " to the bearing capacity of synchronous rotary assembly.
Described fixed mount 1 is provided with annular protrusion towards the end face of described crank throw 21, described annular protrusion and described axle journal concentric, and described crank throw 21 offers arc groove on the end face of described annular protrusion, described arc groove and described annular protrusion adaptation.Like this, rotary inertia when bent axle runs effectively can be reduced, thus while reducing energy consumption further, the elastic deformation of the line shaft that further reduction brings the impact of line shaft because of bent axle.
Claims (5)
1. one kind is applied to the open-core type servo main transmission mechanism of NC turret punch machine, it is characterized in that, comprise fixed mount, bent axle, connecting rod, slide block and core motor, described skid is connected to the bottom of fixed mount, described bent axle comprises crank throw and is located at the axle journal of crank throw both sides, wherein an axle journal is also provided with away from the side of described crank throw the outrigger shaft be connected as a single entity with axle journal, axle journal described in two is hinged on the top of described fixed mount, and outrigger shaft is positioned at outside fixed mount, described connecting rod top is hinged on crank throw, and connecting rod bottom is hinged on slide block, slide block is pumped under the drive of bent axle,
Described core motor comprises the double stator doing shell and the rotor be located in stator, and described rotor empty set, on described outrigger shaft, is connected by synchronous rotary assembly between described rotor and outrigger shaft, makes rotor and outrigger shaft synchronous rotary; Described stator is fixedly connected on the outside of fixed mount, and bent axle is rotated under the driving of core motor;
Described synchronous rotary assembly comprises inner sleeve, drive socket, outer sleeve, at least one group of disc spring, some viscous damping blocks and some transmission steel balls; Described inner sleeve is socketed on described outrigger shaft, and rotor is socketed on described outer sleeve, and described drive socket is located between described inner sleeve and outer sleeve, and the equal concentric of described inner sleeve, drive socket, outer sleeve is arranged;
The outer wall of described inner sleeve offers some strip grooves one, the inwall of described drive socket offers some strip grooves two, described strip groove one is corresponding with strip groove 211 and width is equal, described viscous damping block is contained between described strip groove one and strip groove two, makes to leave gap between the outer wall of inner sleeve and the inwall of drive socket;
The middle part of the inwall of described outer sleeve is provided with annular protrusion one, the two ends of the outer wall of described drive socket are respectively equipped with annular protrusion two and annular protrusion three, and described annular protrusion three is towards the end face of described annular protrusion one in external diameter progressively increases from annular protrusion one side inclined plane shape and annular protrusion three is evenly equipped with some ball-and-sockets three on the end face of described annular protrusion one; Described annular protrusion one is towards the end face of described annular protrusion three in internal diameter progressively reduces from annular protrusion three side inclined plane shape and annular protrusion one is evenly equipped with some ball-and-sockets one on the end face of described annular protrusion three, described ball-and-socket one and ball-and-socket three one_to_one corresponding, described transmission steel ball is contained between described ball-and-socket one and ball-and-socket three; Disc spring described at least one group is against between described annular protrusion one and the end face of annular protrusion two, and transmission steel ball is pressed between annular protrusion one and annular protrusion three.
2. a kind of open-core type servo main transmission mechanism being applied to NC turret punch machine according to claim 1, is characterized in that, described rotor away from one end of described fixed mount and stator hinged away from one end of described fixed mount.
3. a kind of open-core type servo main transmission mechanism being applied to NC turret punch machine according to claim 1, it is characterized in that, described synchronous rotary assembly comprises two groups of disc springs, and described in two groups, disc spring is oppositely arranged.
4. a kind of open-core type servo main transmission mechanism being applied to NC turret punch machine according to claim 1, it is characterized in that, described transmission steel ball is cylindric, and the side surface of described cylinder is in the arc surfaced outwards arched upward and the axle center of cylinder is parallel towards the end face of annular protrusion one with annular protrusion three.
5. a kind of open-core type servo main transmission mechanism being applied to NC turret punch machine according to claim 1, it is characterized in that, described fixed mount is provided with annular protrusion towards the end face of described crank throw, described annular protrusion and described axle journal concentric, described crank throw offers arc groove on the end face of described annular protrusion, described arc groove and described annular protrusion adaptation.
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| CN201510076875.4A CN104608415B (en) | 2015-02-12 | 2015-02-12 | A kind of open-core type servo main transmission mechanism being applied to NC turret punch machine |
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| CN201510076875.4A CN104608415B (en) | 2015-02-12 | 2015-02-12 | A kind of open-core type servo main transmission mechanism being applied to NC turret punch machine |
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| CN104608415B true CN104608415B (en) | 2016-03-09 |
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| CN104999686B (en) * | 2015-07-24 | 2016-08-24 | 南京邮电大学 | A kind of full electric servo NC turret punch machine main drive gear |
| CN106739109B (en) * | 2016-12-28 | 2018-10-02 | 扬州工业职业技术学院 | A kind of NC turret punch machine |
| CN107284520A (en) * | 2017-06-19 | 2017-10-24 | 江西洪都航空工业集团有限责任公司 | A kind of electrical servo steering mechanism that overload protection is provided |
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| JP2000351098A (en) * | 1999-06-14 | 2000-12-19 | Nisshinbo Ind Inc | Controlling mechanism for bottom dead center of ram for mechanical punch press machine |
| ATE486713T1 (en) * | 2002-06-18 | 2010-11-15 | Amada Co Ltd | PRESS WITH A SERVO DRIVE SYSTEM |
| CN202037903U (en) * | 2010-12-31 | 2011-11-16 | 江苏亚威机床股份有限公司 | Main transmission clearance eliminating mechanism of mechanical servo numerical-control turret punch press |
| CN102527877A (en) * | 2010-12-31 | 2012-07-04 | 江苏亚威机床股份有限公司 | Main transmission overload protection mechanism of mechanical servo numerical control turrent punch press |
| CN102290938A (en) * | 2011-08-30 | 2011-12-21 | 国电联合动力技术有限公司 | Novel double-stator high-temperature superconducting synchronous generator |
| CN202293398U (en) * | 2011-09-30 | 2012-07-04 | 江苏扬力数控机床有限公司 | Double-servo-motor directly-driven numerical control rotating tower punch press |
| CN202965240U (en) * | 2012-11-26 | 2013-06-05 | 广东锻压机床厂有限公司 | Small eccentric crank connecting rod drive mechanism with alterable length of punch pin |
| CN203460455U (en) * | 2013-08-21 | 2014-03-05 | 江苏金方圆数控机床有限公司 | Main driving single servo motor mounting structure in punching machinery |
| CN204451285U (en) * | 2015-02-12 | 2015-07-08 | 江苏扬力数控机床有限公司 | The open-core type servo main transmission mechanism of full electric servo NC turret punch machine |
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