CN102862133B - Mechanical clamping device based on lead screw-toggle force amplifier - Google Patents
Mechanical clamping device based on lead screw-toggle force amplifier Download PDFInfo
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- CN102862133B CN102862133B CN201210374931.9A CN201210374931A CN102862133B CN 102862133 B CN102862133 B CN 102862133B CN 201210374931 A CN201210374931 A CN 201210374931A CN 102862133 B CN102862133 B CN 102862133B
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- platen
- gripping means
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Abstract
A mechanical clamping device comprises a lead screw driving device, a toggle force amplifier and a press plate. The toggle force amplifier comprises a force amplifying rod and a force exerting rod which are movably hinged onto the lead screw driving device through a connection sheet in the horizontal direction. The press plate is hinged onto the force exerting rod and movably arranged in a vertical guide rail in the vertical direction, and a clamping surface of the press plate is exposed. By additionally arranging the toggle force amplifier, the original force on a lead screw is amplified secondarily and the reliability degree of mechanical clamping is improved.
Description
Technical field
The present invention relates to a kind of mechanical gripping means, mainly a kind of mechanical gripping means based on leading screw-shed stick force-increasing mechanism.
Background technology
In current mechanical gripping means, as the drive unit providing clamping force, mainly to surge, pneumatic and Mechanical Driven.The major defect surged is that the leakage of hydraulic oil liquid medium causes environmental pollution; Pneumatic major defect is that system pressure is lower, generally can only reach 0.5MPa-0.7MPa; The technical problem underlying that Mechanical Driven clamping device exists is: automatization level is lower, and the element used in mechanism is more, thus makes integrated model seem very complicated.
Along with factors such as automaticity are high, the mechanical gripping means of environmental type is more and more subject to the favor of people, and people start to try every possible means to solve the shortcoming existed in above-mentioned mechanical gripping means.
Someone proposes a kind of clamping device based on screw mechanism.Refer to Fig. 1, Fig. 1 is a kind of existing screw rod type Mechanical Driven clamping device, and this clamping device comprises leading screw 1, servomotor 2 and platen 3, and wherein servomotor 2 provides driving force, by rotating threaded shaft 1, platen 3 is moved, thus make platen 3 can clamp or unclamp by laminate part.The clamping device of this screw mechanism, advantage is that structure is simple, and it is convenient to control, and only need control rotary speed and the time of servomotor 2, just accurately can control the dynamics in the pressing space of clamping device.Shortcoming is owing to only having this kind of force-increasing mechanism of leading screw, thus export clamping force less, be generally used for workpiece less time occasion.
For solving the problem, designing and a kind ofly exporting that clamping force is large, automaticity is high and the mechanical gripping means of economic environmental protection, raising machine-building level is had great significance.
In view of this, the present invention uses screw mechanism and Toggle Force Amplifier and servomotor to devise a kind of novel mechanical gripping means.
Summary of the invention
Goal of the invention of the present invention is to provide the bilateral device of a kind of mechanical grip based on leading screw, by improving structure, and the comparatively large and economic environmental protection of good stability, clamping power output, and bilaterally can clamp two workpiece simultaneously, enhance productivity.
To achieve the above object of the invention, the technical solution used in the present invention is: a kind of mechanical gripping means, comprise lead-screw driving device, shed stick step-up system, and platen, described shed stick step-up system comprises reinforcement bar and force application rod, both by a connecting piece in the horizontal direction active be articulated with on described lead-screw driving device, described platen is hinged on described force application rod, this platen vertical direction active be arranged in a upright guide rail, and expose the clamping area of this platen.
Further, one end of described reinforcement bar is hinged on a stationary plane, forms fixed point rotary structure.
Further, described lead-screw driving device comprises servomotor, shaft coupling, leading screw and feed screw nut, described leading screw is connected on servomotor by shaft coupling, and this leading screw and described feed screw nut are interted by screw thread and be connected, and this feed screw nut is hinged on brace simultaneously.
Further, described feed screw nut is arranged in a horizontal guide rail in the horizontal direction actively.
Further, this mechanical gripping means also comprises motor control assembly, is connected on described servomotor.
Further, above-mentioned mechanical gripping means also can be designed to bilateral clamping device, now this mechanical bilateral clamping device comprises lead-screw driving device, and symmetrical shed stick step-up system and the platen being arranged at described lead-screw driving device both sides of two covers, the shed stick step-up system of described every side comprises reinforcement bar and force application rod, both by a connecting piece in the horizontal direction active be articulated with on described lead-screw driving device, described platen is hinged on described force application rod, this platen vertical direction active be arranged in a upright guide rail, and expose the clamping area of this platen.
Further, described lead-screw driving device comprises servomotor and symmetrical shaft coupling, leading screw and the feed screw nut being arranged at described servomotor both sides of two covers, the leading screw of described every side is connected on servomotor by shaft coupling, this leading screw and described feed screw nut are interted by screw thread and are connected, and this feed screw nut is hinged on the brace of corresponding side simultaneously.
Further, described symmetrical two leading screws are respectively left-handed leading screw and dextrorotation leading screw.
The course of work of mechanical gripping means of the present invention is as follows:
(1) motor control assembly sends an instruction to servomotor, and motor starts to rotate, and drives leading screw to rotate by shaft coupling simultaneously;
(2) two leading screws left-handed and dextral motion of difference under the effect of shaft coupling, itself also carries out first time power amplification;
(3) power output is by the transmission of connecting rod, and conduct to Toggle Force Amplifier mechanism, now pressure angle α diminishes gradually, and reinforcement bar carries out second time power amplification;
(4) power is delivered on platen by force application rod by reinforcement bar, and platen carries out operation to workpiece;
(5) after having worked, motor control assembly sends instruction, and servomotor reverses rapidly, and all elements all reset, and completes a process.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1. the present invention adopts servo electric rotating machine to be power source, compared with hydraulic pressure, Pneumatic Transmission, has green non-pollution a little, and is connected with motor control assembly, easily be automated.
2. the present invention uses leading screw, together improves the synchronism of mechanical gripping means with motor control assembly, and composite application several with Toggle Force Amplifier, improves the clamping force of device.
3. be employed herein the step-up systems such as Toggle Force Amplifier mechanism and screw mechanism, improve the clamping force of mechanical gripping means.
4. in the present invention, left and right leading screw adopts left-handed and dextrorotation, and ensure that left and right rectilinear motion simultaneously, Toggle Force Amplifier mechanism adopts and is arranged symmetrically with, and the mechanical gripping means symmetry made is attractive in appearance.
5. adopt bilateral structure, two workpiece can be clamped simultaneously, enhance productivity.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the mechanical clamping device that existing a kind of leading screw drives;
Fig. 2 is the mechanical gripping means of first embodiment of the invention;
Fig. 3 is the mechanical gripping means of second embodiment of the invention.
Detailed description of the invention
Embodiment one
Refer to Fig. 2, Fig. 2 is the mechanical gripping means of first embodiment of the invention.As shown in the figure, what first present embodiment disclosed is a kind of monolateral mechanical gripping means, and this mechanical gripping means comprises for providing the drive system of mechanical clamping forces and for mechanical clamping forces being applied to the platen 30 on workpiece.Drive system comprises lead-screw driving device and shed stick step-up system, and this lead-screw driving device mainly provides power source, and the power that this shed stick step-up system then plays Jiang Liyuan to be provided is amplified.Wherein, lead-screw driving device comprises servomotor 21, shaft coupling 22, leading screw 23 and feed screw nut 24, leading screw 23 to be connected on servomotor 21 by shaft coupling 22, leading screw 23 is provided with screw thread, this leading screw 23 and feed screw nut 24 are interted by screw thread and are connected, feed screw nut 24 is arranged in a horizontal guide rail 25, and can do moving left and right in horizontal direction in this horizontal guide rail 25.Servomotor 21 is connected with the motor control assembly (not shown) of an outside, and this motor control assembly is exported to servomotor 21 and started and shutdown signal.When servomotor 21 receives enabling signal, motor starts to rotate, and drives leading screw 23 to rotate.Leading screw 23 promotes feed screw nut 24 by screw thread left-handed (or dextrorotation) and moves left and right in the horizontal direction.
Shed stick step-up system comprises reinforcement bar 11 and force application rod 12, both by a connecting piece 13 in the horizontal direction active be articulated with on described lead-screw driving device.One end of reinforcement bar 11 is hinged on a stationary plane, forms fixed point rotary structure, when this reinforcement bar 11 is with this fixed point rotary, with the angle mineralization pressure angle α on vertical direction.The hinged platen 30 in one end of force application rod 12, this platen 30 vertical direction active be arranged in a upright guide rail 31, and expose the clamping area 32 of this platen 30.The hinged end of reinforcement bar 11 and force application rod 12 is simultaneously hinged with brace 15 again, and brace 15 is hinged on feed screw nut 24.When feed screw nut 24 under the drive of leading screw 23 in horizontal motion time, reinforcement bar 11 is driven around fixed point rotary, and pressure angle α also increases thereupon or reduces, and force application rod 12 promotes platen 30 or rise downwards under the synergy of brace 15 and reinforcement bar 11.
The specific works process of present embodiment is as described below:
(1) servomotor is in off-position, and Toggle Force Amplifier is in pressure angle α maximum rating, and platen 30 is in original state;
(2) motor control assembly sends work order to servomotor 21, and now motor starts to rotate, and drive leading screw 23 to start to rotate by shaft coupling 22, leading screw 23 changes moment into power output;
(3) cross force is passed to brace 15 by feed screw nut 24 by lead-screw driving device, and power outputs on reinforcement bar 11 and force application rod 12 by brace 15, promotes Toggle Force Amplifier and outwards moves;
(4) when reinforcement bar 11 outwards moves, pressure angle α diminishes gradually, and Toggle Force Amplifier has carried out second time power amplification, then power output is delivered on force application rod 12, and now, force application rod 12 drives platen 30, downward clamping work pieces, completes the clamping course of work fast;
(5) when after the process of finishing the work, motor control assembly sends instruction, and servomotor 21 reverses, and now, leading screw 23 also starts reversion, drives feed screw nut 24 to move inwards;
(6) drive Liang Ge toggle mechanism by feed screw nut 24, pressure angle α slowly becomes large, drives force application rod 12 platen 30 slowly to reset.Complete a complete course of work.
Embodiment two
Refer to Fig. 3, Fig. 3 is the mechanical gripping means of second embodiment of the invention.As shown in the figure, what present embodiment disclosed is a kind of bilateral mechanical gripping means, comprises lead-screw driving device and symmetrical shed stick step-up system and the platen 30,30 ' being arranged at described lead-screw driving device both sides of two covers.Identical with embodiment one, lead-screw driving device is responsible for providing power source, and shed stick step-up system is responsible for the power in power source being amplified and being supplied to platen, and the power be subject to is applied on workpiece by platen again, thus plays the effect of stepping up.
Wherein lead-screw driving device comprise servomotor 21 and two covers symmetrical be arranged at described servomotor 21 both sides shaft coupling 22,22 ', leading screw 23,23 ' and feed screw nut 24,24 '.For left side, leading screw 23 to be connected on servomotor 21 by shaft coupling 22, leading screw 23 is provided with screw thread, this leading screw 23 and feed screw nut 24 are interted by screw thread and are connected, feed screw nut 24 is arranged in a horizontal guide rail 25, and can do moving left and right in horizontal direction in this horizontal guide rail 25, this feed screw nut 24 is hinged on the brace 15 of corresponding side simultaneously.Servomotor 21 is connected with the motor control assembly (not shown) of an outside, and this motor control assembly is exported to servomotor 21 and started and shutdown signal.When servomotor 21 receives enabling signal, motor starts to rotate, and drives leading screw 23 to rotate.Leading screw 23 promotes feed screw nut 24 by screw thread left-handed (or dextrorotation) and moves left and right in the horizontal direction.The shaft coupling 22 ' on right side, leading screw 23 ', feed screw nut 24 ' and horizontal guide rail 25 ' are symmetrical arranged with left side, repeat no more herein.It is pointed out that the screw thread on the leading screw 23 in left side and the leading screw 23 ' on right side is respectively left-handed leading screw and dextrorotation leading screw, like this when servomotor 21 rotates, by making two platens in left and right, there is synchronous rising or down maneuver.
Left and right two cover shed stick step-up systems comprise reinforcement bar 11,11 ' and force application rod 12,12 ' respectively, for left side, reinforcement bar 11 and force application rod 12 by brace 15 in the horizontal direction active be articulated with on described lead-screw driving device.One end of reinforcement bar 11 is hinged on a stationary plane, forms fixed point rotary structure, when this reinforcement bar 11 is with this fixed point rotary, with the angle mineralization pressure angle α on vertical direction.The hinged platen 30 in one end of force application rod 12, this platen 30 vertical direction active be arranged in a upright guide rail 31, and expose the clamping area 32 of this platen 30.The hinged end of reinforcement bar 11 and force application rod 12 is simultaneously hinged with brace 15 again, and brace 15 is hinged on feed screw nut 24.When feed screw nut 24 under the drive of leading screw 23 in horizontal motion time, reinforcement bar 11 is driven around fixed point rotary, and pressure angle α also increases thereupon or reduces, and force application rod 12 promotes platen 30 or rise downwards under the synergy of brace 15 and reinforcement bar 11.And the connected mode of the reinforcement bar 11 ' on right side, force application rod 12 ', brace 15 ' and platen 30 ' and upright guide rail 31 ' and left side symmetry, repeat no more herein.
The specific works process of present embodiment is as described below:
(1) servomotor is in off-position, and Toggle Force Amplifier is in pressure angle α maximum rating, and platen 30,30 ' is in original state;
(2) motor control assembly sends work order to servomotor 21, and now servomotor 21 starts to rotate, and drive leading screw 23,23 ' to start to rotate by shaft coupling 22,22 ', leading screw 23,23 ' changes moment into power output;
(3) cross force is passed to brace 15,15 ' by feed screw nut 24,24 ' by lead-screw driving device, and power is outputted to two, left and right reinforcement bar 11,11 ' and force application rod 12,12 ' by brace 15,15 ', promotes two Toggle Force Amplifiers and outwards moves;
(4) when reinforcement bar 11,11 ' outwards moves, pressure angle α diminishes gradually, Toggle Force Amplifier has carried out second time power amplification, then power output is delivered on force application rod 12,12 ', now, force application rod 12,12 ' drives platen 30,30 ', and downward clamping work pieces, completes the clamping course of work fast;
(5) when after the process of finishing the work, motor control assembly sends instruction, and servomotor 21 reverses, and now, leading screw 23,23 ' also starts reversion, drives feed screw nut 24,24 ' to move inwards;
(6) drive two Toggle Force Amplifiers by feed screw nut 24,24 ', pressure angle α slowly becomes large, drives force application rod 12,12 ' and platen 30,30 ' slowly to reset.Complete a complete course of work.
In sum, the present invention proposes the mechanical clamping device that a kind of leading screw drives, by increasing a set of shed stick step-up system, the power on script leading screw having been carried out secondary amplification, having added the degree of reliability that machinery steps up.Compared with prior art, of the present invention somewhat following:
1. the present invention adopts servo electric rotating machine to be power source, compared with hydraulic pressure, Pneumatic Transmission, has green non-pollution a little, and is connected with motor control assembly, easily be automated.
2. the present invention uses leading screw, together improves the synchronism of mechanical gripping means with motor control assembly, and composite application several with Toggle Force Amplifier, improves the clamping force of device.
3. be employed herein the step-up systems such as Toggle Force Amplifier mechanism and screw mechanism, improve the clamping force of mechanical gripping means.
4. in the present invention, left and right leading screw adopts left-handed and dextrorotation, and ensure that left and right rectilinear motion simultaneously, Toggle Force Amplifier mechanism adopts and is arranged symmetrically with, and the mechanical gripping means symmetry made is attractive in appearance.
5. adopt bilateral structure, two workpiece can be clamped simultaneously, enhance productivity.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a mechanical gripping means, it is characterized in that: comprise lead-screw driving device, shed stick step-up system, and platen, described shed stick step-up system comprises reinforcement bar and force application rod, both by a connecting piece in the horizontal direction active be articulated with on described lead-screw driving device, described platen is hinged on described force application rod, this platen vertical direction active be arranged in a upright guide rail, and expose the clamping area of this platen.
2. mechanical gripping means as claimed in claim 1, is characterized in that: one end of described reinforcement bar is hinged on a stationary plane, forms fixed point rotary structure.
3. mechanical gripping means as claimed in claim 1, it is characterized in that: described lead-screw driving device comprises servomotor, shaft coupling, leading screw and feed screw nut, described leading screw is connected on servomotor by shaft coupling, this leading screw and described feed screw nut are interted by screw thread and are connected, and this feed screw nut is hinged on brace simultaneously.
4. mechanical gripping means as claimed in claim 3, is characterized in that: described feed screw nut is arranged in a horizontal guide rail in the horizontal direction actively.
5. mechanical gripping means as claimed in claim 3, is characterized in that: comprise motor control assembly further, is connected on described servomotor.
6. the bilateral clamping device of machinery, it is characterized in that: comprise lead-screw driving device, and symmetrical shed stick step-up system and the platen being arranged at described lead-screw driving device both sides of two covers, the shed stick step-up system of described every side comprises reinforcement bar and force application rod, both by a connecting piece in the horizontal direction active be articulated with on described lead-screw driving device, described platen is hinged on described force application rod, this platen vertical direction active be arranged in a upright guide rail, and expose the clamping area of this platen.
7. mechanical bilateral clamping device as claimed in claim 6, is characterized in that: one end of described reinforcement bar is hinged on a stationary plane, forms fixed point rotary structure.
8. mechanical gripping means as claimed in claim 6, it is characterized in that: described lead-screw driving device comprises servomotor and symmetrical shaft coupling, leading screw and the feed screw nut being arranged at described servomotor both sides of two covers, the leading screw of described every side is connected on servomotor by shaft coupling, this leading screw and described feed screw nut are interted by screw thread and are connected, and this feed screw nut is hinged on the brace of corresponding side simultaneously.
9. mechanical gripping means as claimed in claim 8, is characterized in that: described symmetrical two leading screws are respectively left-handed leading screw and dextrorotation leading screw.
10. mechanical gripping means as claimed in claim 8, is characterized in that: described feed screw nut is arranged in a horizontal guide rail in the horizontal direction actively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374931.9A CN102862133B (en) | 2012-09-29 | 2012-09-29 | Mechanical clamping device based on lead screw-toggle force amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210374931.9A CN102862133B (en) | 2012-09-29 | 2012-09-29 | Mechanical clamping device based on lead screw-toggle force amplifier |
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| Publication Number | Publication Date |
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| CN102862133A CN102862133A (en) | 2013-01-09 |
| CN102862133B true CN102862133B (en) | 2015-07-15 |
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| CN201210374931.9A Expired - Fee Related CN102862133B (en) | 2012-09-29 | 2012-09-29 | Mechanical clamping device based on lead screw-toggle force amplifier |
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| CN104084979B (en) * | 2013-12-04 | 2016-02-17 | 安徽精致机电科技有限公司 | Sidewall extrusion line automatic piercing machine |
| CN103831640A (en) * | 2014-03-06 | 2014-06-04 | 安徽禾恒冶金机械股份有限公司 | Clamping-reinforced pumper hopper clamping device |
| CN105171481A (en) * | 2015-09-16 | 2015-12-23 | 江苏大学 | Gas-liquid reinforcement double-station clamp adopting hinge rod connecting manner |
| CN107282721B (en) * | 2017-07-28 | 2023-08-18 | 奥美森智能装备股份有限公司 | Clamping die reinforcing device and working method thereof |
| CN108746828A (en) * | 2018-06-25 | 2018-11-06 | 丰汉电子(上海)有限公司 | Private clothes pincers |
| CN111157091B (en) * | 2019-12-04 | 2022-03-29 | 中机生产力促进中心 | Weighing apparatus calibrating device and weighing apparatus calibrating method |
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