CN116786912A - High-precision rack splicing gripper and splicing positioning method thereof - Google Patents
High-precision rack splicing gripper and splicing positioning method thereof Download PDFInfo
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- CN116786912A CN116786912A CN202310982952.7A CN202310982952A CN116786912A CN 116786912 A CN116786912 A CN 116786912A CN 202310982952 A CN202310982952 A CN 202310982952A CN 116786912 A CN116786912 A CN 116786912A
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- 239000007788 liquid Substances 0.000 claims description 104
- 238000007789 sealing Methods 0.000 claims description 41
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- 230000005389 magnetism Effects 0.000 claims description 25
- 238000003825 pressing Methods 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 17
- 210000001503 joint Anatomy 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 10
- 238000009434 installation Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
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- 230000008859 change Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
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- 238000007906 compression Methods 0.000 description 2
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- 238000003032 molecular docking Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The invention relates to the technical field of rack splicing, and particularly discloses a high-precision rack splicing gripper and a splicing positioning method thereof, comprising the following steps: the clamping hand clamp is fixed on the left side and the right side of the middle piece, the clamping hand clamp and the middle piece form clamping members of racks, and a splicing piece is arranged between the adjacent rack clamping members; further comprises: the middle part of the top of the intermediate piece and the middle part of the continuous piece are both in positioning connection with the tail end bolt of the output shaft of the hydraulic assembly; the positioning strip is arranged at the inner wall of the concave of the hand clamping fixture in a penetrating and sliding manner and is used for accurately positioning and limiting the tooth block on the rack; the bottom of the continuous connecting piece is also provided with an axial movement limiting mechanism of the positioning strip, and the movement limiting mechanism is used for moving the rack and accurately butting the tail ends. According to the high-precision rack splicing gripper and the splicing positioning method thereof, double automatic clamping is carried out on the rack to be processed, the clamping efficiency is improved, the positioning is stable, and meanwhile, the splicing operation of the tail end of the rack is facilitated.
Description
Technical Field
The invention relates to the technical field of rack splicing, in particular to a high-precision rack splicing gripper and a splicing positioning method thereof.
Background
The conventional transmission of the rack and common fittings in the high-precision instruments and meters are convenient to change force generation and use modes through the arrangement of the rack, when the rack is manufactured, because of the limitation of production equipment and actual use needs, the integral length of part of the rack is directly different from the required length when the rack is integrally formed, and the tail end of the rack is required to be subjected to the aligning operation after the rack is formed, so that the rack after complete output processing operation meets the actual use needs.
In order to meet the precision requirement of the existing racks during processing, manual clamping, positioning and continuous connection processing are generally adopted to achieve the use effect of the racks for positioning and continuous connection, more than two different racks are clamped and workpiece limiting during use, the racks are subjected to angle deflection by using a workbench, so that the adjacent rack ends are in alignment connection, the racks are axially and stably distributed, the subsequent rack continuous connection operation is performed after the racks are completely limited and the ends are aligned, and whether the continuous connection precision of the racks is accurate or not is directly dependent on the stability and the butt connection precision of the overall positioning state of the racks after positioning;
then current rack centre gripping location structure wholly utilizes the manual work to fix a position the centre gripping operation, actual work efficiency is low, need the manual work to wait to process the repeated centre gripping calibration of rack, be difficult to keep to the actual centre gripping operation stability of rack, remain concave lobe material and impurity existence when prefabricating the shaping on the rack outer wall easily, the unstability of centre gripping appears, when the rack is continuous simultaneously, its terminal counterpoint accuracy difference is big, in continuous in-process, the butt joint terminal of rack is easy under vibration external force, take place terminal dislocation shearing motion, influence rack efficiency and the shaping precision that is continuous.
Aiming at the problems, innovative design is urgently needed on the basis of the continuous connection grippers of the original racks.
Disclosure of Invention
The invention aims to provide a high-precision rack splicing gripper and a splicing positioning method thereof, which are used for solving the problems that the prior art provides that the splicing positioning of a rack needs repeated calibration, the positioning processing efficiency is low, meanwhile, the clamping stability of a rack workpiece is difficult to ensure, and the problem that the tail end of the rack is easily subjected to dislocation shearing movement due to vibration to influence the splicing efficiency and the forming precision of the rack during the splicing of the rack is solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: a high-precision rack splicing gripper and a splicing positioning method thereof comprise the following steps:
the clamping hand clamp is fixed on the left side and the right side of the middle piece, the clamping hand clamp and the middle piece form clamping members of racks, and a splicing piece is arranged between the adjacent rack clamping members;
further comprises:
the middle part of the top of the middle part is connected with the tail end bolt of the output shaft of the hydraulic component in a positioning way, and the clamping fixture is also provided with a front side and a rear side pressing clamping component of the rack, so that the rack is subjected to wrapping type pressing and fixing of the outer wall of the outer side;
the positioning strip is arranged at the inner wall of the concave of the hand clamping fixture in a penetrating and sliding manner and is used for accurately positioning and limiting the tooth block on the rack;
the bottom of the continuous connecting piece is also provided with an axial movement limiting mechanism of the positioning strip, and the movement limiting mechanism is used for moving the rack and accurately butting the tail ends.
Preferably, the clamping fixture and the connecting piece are both in an n-shaped structure, and rack clamping members formed by the clamping fixture and the middle piece are symmetrically distributed about the vertical central axis of the connecting piece and are used for clamping and connecting two different racks.
Preferably, the pressing and clamping assembly comprises a propelling liquid cavity and a motor screw rod assembly at the top of the clamping fixture, an output shaft of the motor screw rod assembly penetrates into the propelling liquid cavity through a sealing bearing, a liquid sealing plate is arranged on the outer wall of the output shaft of the motor screw rod assembly positioned in the propelling liquid cavity in a threaded mode, meanwhile, guide pipes are connected to the left side and the right side of the propelling liquid cavity, a pressurizing cavity is arranged at the tail end of the guide pipe in a penetrating mode, the pressurizing cavity is positioned at the tail end position of the outer side wall of the clamping fixture, and a clamping piece is arranged at one side of the pressurizing cavity in a penetrating mode.
Preferably, the sealing strip is sleeved at the outer edge of the liquid sealing plate, an axial fit and radial clamping sealing sliding mounting structure is formed between the outer edge of the liquid sealing plate and the inner wall of the propelling liquid cavity, the honeycomb duct and the inside of the pressurizing cavity are sequentially communicated, oil liquid is arranged, and meanwhile, the pressurizing cavity and the clamping piece form a sealing fit relative telescopic structure.
Preferably, the clamping piece is fixed with the pressurization liquid chamber towards the inside one side at tong anchor clamps middle part still, and equidistant installation has the positioning tube on the pressurization liquid chamber, and the one end that the through connection has the liquid seal pole in the positioning tube, and the other end of liquid seal pole is fixed in on the grip block, and the spring is installed in the liquid seal pole outside between positioning tube and the grip block to be provided with the elasticity liquid bag on the outer wall of one side of grip block towards the rack.
Preferably, the tail end of the liquid sealing rod in the positioning cylinder and the inner wall of the positioning cylinder form a sliding connection structure in a sealing fit manner, the positioning cylinder and the liquid sealing rod form an axial relative telescopic structure, and oil is arranged in the positioning cylinder and the pressurized liquid cavity;
the elastic liquid bag is communicated with the pressurized liquid cavity through a thin pipe.
Preferably, a positioning groove is formed in the tail end of the positioning strip, facing the top of the splicing piece, of the positioning strip, a sliding electrifying contact strip is fixed at the top of the positioning strip, the sliding electrifying contact strip is electrically connected with a contact electrifying support in the middle piece, tooth blocks which are mutually matched with racks to be processed are arranged at the bottom of the positioning strip, guide sliding grooves are formed in the front side wall and the rear side wall of the positioning strip, and the guide sliding grooves on the positioning strip and a sliding block in the clamping fixture form a clamping sliding connection structure;
a first electromagnet is also fixed in the positioning strip, and the first electromagnet is electrically connected with the sliding electrified contact strip;
and a movable reset component of the locating strip is further arranged between the locating strip and the clamping hand clamp.
Preferably, the first type of movable reset member of the positioning strip comprises an elastic piece fixed between the guide chute and the sliding block and used for resetting the positioning strip and the clamping fixture in a relative axial telescopic movement.
Preferably, the second type of movable reset member of the positioning strip comprises a slider which is magnetic, a second electromagnet which is embedded and installed in the positioning strip at the side of the slider, and a pressing switch at the bottom of the positioning groove, wherein the pressing switch is electrically connected with the second electromagnet, and meanwhile, the inner walls of the guide sliding grooves on the front side wall and the rear side wall of the positioning strip are made of ceramic materials which are isolated from magnetism.
Preferably, the moving limiting mechanism of the positioning strip comprises a guiding moving cavity which is arranged at the bottom of the splicing piece in an intrusion manner, a moving positioning block is arranged at the bottom of the guiding moving cavity in a penetrating manner, a lifting rod is arranged at the middle part of the moving positioning block in a penetrating manner, a spring is fixed between the moving positioning block and the lifting rod, an electromagnet is further arranged in the moving positioning block, an electrified sliding groove and a magnetic plate are arranged on the inner wall of the top of the guiding moving cavity in a staggered and parallel manner, and the magnetism of the bottom surface of the magnetic plate is the same as the working magnetism of the electromagnet in the moving positioning block;
the power-on sliding groove and the lifting rod are vertically and vertically distributed, and the upper half section of the lifting rod is provided with a power-on component which is used for electrically connecting the power-on sliding groove with the electromagnet in the movable positioning block.
Preferably, the lifting rod and the movable positioning block form a penetrating axial telescopic structure, the energizing member at the upper half section of the lifting rod is further connected with a third electromagnet in series, the third electromagnet is fixed on the outer wall of the movable positioning block positioned in the guiding moving cavity, a fourth electromagnet is further fixed on the inner wall of the guiding moving cavity of the facing surface of the third electromagnet, and a ball is arranged at the bottom of the third electromagnet.
Preferably, the diameter of the bottom surface of the lifting rod is smaller than the inner diameter of the positioning groove, and the electromagnet in the movable positioning block is magnetically adsorbed and connected with the positioning strip.
The invention also discloses a splicing positioning method of the high-precision rack splicing gripper, which comprises the following specific splicing steps:
s1, lifting a clamping fixture and a middle piece by utilizing a hydraulic assembly, enabling a rack serrated surface to be processed to be anastomotic and attached to a bottom serrated surface of a positioning strip, and achieving preliminary connection limit between the rack and the positioning strip through a first electromagnet in the positioning strip;
s2, changing the position of a liquid sealing plate through starting of a motor screw rod assembly, and adjusting oil pressure in a propelling liquid cavity and a pressurizing cavity to enable a clamping piece in the pressurizing cavity to extend outwards, so that lateral clamping and positioning are carried out on the outer wall of a rack to be processed;
the clamping piece continuously applies lateral extrusion to the outer wall of the rack, the clamping plate and the liquid blocking rod transversely move in the clamping piece, the oil pressure in the pressurized liquid cavity is changed, the clamping plate extruded by the side wall of the rack is contracted, the clamping plate extruded by the side wall of the rack is not outwards stretched, and oil in the pressurized liquid cavity is guided into the elastic liquid bag under the action of pressure, so that the elastic liquid bag expands, and the outer wall of the rack to be processed is subjected to wrapped type pressurized clamping positioning.
S3, after the racks are limited and clamped, the continuous connecting piece and the clamping fixture are mutually spliced through lifting of the continuous connecting piece, the lower end of the lifting rod is inserted into the positioning groove of the positioning strip, the telescopic operation upper end of the lifting rod is connected with the electrified sliding groove, a circuit where the electromagnet in the movable positioning block is located is closed, magnetism generated by the electromagnet is repelled with the magnetic plate, the magnetic attraction force between the magnetic plate and the movable positioning block is relieved, movement of the movable positioning block is facilitated, and meanwhile, the electromagnet and the positioning strip are magnetically attracted and positioned;
and S4, adjusting the movable positioning block, the positioning strip and the rack to be processed to axially move and limit through the magnetic action external force between the third electromagnet and the fourth electromagnet, so that the butt joint of the tail end of the rack to be processed is convenient and stable, and the dislocation of the tail end of the joint cannot occur due to the vibration action when the joint is continued through the axial pressurization and the magnetic adsorption positioning action.
Compared with the prior art, the invention has the beneficial effects that: according to the continuous connection gripper of the high-precision rack and the continuous connection positioning method thereof, double automatic clamping is carried out on the rack to be processed, the clamping efficiency is improved, the positioning is stable, meanwhile, the tail end of the rack is convenient for continuous connection operation, dislocation shearing of the butt joint tail end of the rack caused by continuous connection vibration is effectively avoided, and the concrete mode is as follows:
1. the bottom sawtooth structure of the locating strip and the sawtooth structure at the bottom of the rack to be processed are matched, so that the lateral butt joint between the locating strip and the rack is facilitated, the locating strip and the rack are quickly connected under the action of an electromagnet in the locating strip, axial movement dislocation cannot occur after the locating strip is connected, meanwhile, the position of a liquid sealing plate in a propelling liquid cavity is changed by using a motor component, the hydraulic pressure of the oil liquid in the propelling liquid cavity and the pressure cavity is adjusted, and a clamping piece is outwards stretched and laterally extruded on the outer wall of the rack by using the hydraulic pressure, so that the clamping and locating effect of the rack is realized;
2. the wrapped pressure applying structure of the rack is arranged on the clamping piece, so that the rack cannot be located and clamped unstably due to vibration action after the rack is located, particularly, the clamping plate and the elastic liquid bag on the clamping piece are directly contacted with the side wall of the rack on the side wall of the rack extruded by the clamping piece, so that the contact friction force of the clamping plate and the elastic liquid bag on the clamping piece is improved, meanwhile, due to the thickness dimension difference of the rack, different connection relations can be formed between different clamping plates on the clamping piece and the rack, the upper clamping plate directly applies pressure to the side wall of the rack, so that the upper clamping plate and the clamping piece relatively stretch, oil in the pressurized liquid cavity is compressed, the oil in the pressurized liquid cavity flows to change the storage position, the lower clamping plate clamping piece relatively stretches outwards, the lower clamping plate is directly attached to the bottom of the rack, the rack is carried out at the bottom, the vertical falling, the positioning and the unstable clamping are prevented, meanwhile, the oil in the pressurized liquid cavity can be guided into the elastic liquid bag on the corresponding clamping plate through the tubule, the elastic liquid bag can expand and squeeze, the outer wall of the rack is wrapped pressure applying and clamped, and the rack is stably positioned, and the vibration is effectively reduced, and the vibration is caused;
3. for the removal of locating piece, set up axial displacement stop gear on the follow-up piece, go up and down alternate through the lifter in the movable positioning piece, make the lifter guide into the constant head tank in by the extrusion take place telescopic motion, the circular telegram component of its upper end links to each other with circular telegram sliding tray, the circuit of electro-magnet in the intercommunication movable positioning piece, make the electro-magnet produce the magnetism repulsion with the magnetic plate, make the movable positioning piece more smooth when driving the rack and remove, and remove former magnetism between magnetic plate and the movable positioning piece and inhale the location effect, former magnetism is inhaled the location effect and is made the movable positioning piece location stable, can not slide wantonly during the installation, the electro-magnet can also carry out spacingly to the locating piece that the movable positioning piece bottom is connected, conveniently drive rack lateral shifting that locating piece and bottom are connected, through the relative exogenic action of magnetism between third electro-magnet and the fourth electro-magnet, can carry out the terminal quick butt joint of rack, improve butt joint accuracy and stability.
Drawings
FIG. 1 is a schematic view of the overall structure of the front face of the present invention;
FIG. 2 is a schematic view of a front split structure of the present invention;
FIG. 3 is a schematic view of a hand clamping device according to the present invention;
FIG. 4 is a schematic diagram of the installation and distribution structure of the flow guide pipe of the present invention;
FIG. 5 is a schematic view of a clamping member according to the present invention;
FIG. 6 is a schematic view of the installation and distribution structure of the guide moving cavity and the moving positioning block of the present invention;
FIG. 7 is a schematic view of a positioning strip according to the present invention;
FIG. 8 is a schematic view of the internal structure of the guiding moving chamber of the present invention;
FIG. 9 is a schematic view of the connection structure of the slider and the elastic member according to the present invention;
FIG. 10 is a schematic diagram of a slider and a second electromagnet distribution structure according to the present invention;
FIG. 11 is a schematic view of the mounting and distribution structure of a third electromagnet and a fourth electromagnet according to the present invention;
fig. 12 is a schematic view of a mounting structure of a mobile positioning block according to the present invention.
In the figure: 1. a grip clamp; 101. a propellant liquid chamber; 102. a motor screw assembly; 103. a liquid sealing plate; 104. a flow guiding pipe; 105. a pressurized cavity; 106. a clamping member; 1061. a pressurized liquid chamber; 1062. a positioning cylinder; 1063. a liquid stopper rod; 1064. a clamping plate; 1065. an elastic fluid cell; 2. a middleware; 3. a splice; 301. guiding the moving cavity; 302. moving the positioning block; 303. a lifting rod; 304. a power-on sliding groove; 305. a magnetic plate; 306. a third electromagnet; 307. a fourth electromagnet; 4. a positioning strip; 5. a positioning groove; 6. sliding the energizing contact strip; 7. a first electromagnet; 8. a slide block; 9. an elastic member; 10. a second electromagnet; 11. and pressing the switch.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-10, the present invention provides a technical solution: the utility model provides a high accuracy rack connect tongs, specifically is connect tongs to centre gripping limit structure of rack, includes:
the clamping fixture 1 is fixed on the left side and the right side of the middle piece 2, the clamping fixture and the middle piece form clamping members of racks, and a connector 3 is arranged between the adjacent rack clamping members; the clamping fixture 1 and the splicing piece 3 are both in an n-shaped structure, and rack clamping members formed by the clamping fixture 1 and the middle piece 2 are symmetrically distributed about the vertical central axis of the splicing piece 3 and are used for clamping and splicing two different racks; the rack to be processed is convenient for preliminary assembly in the rack clamping member and subsequent processing.
Also included are as shown in fig. 3 and 9 or 10: the positioning strip 4 is arranged at the inner wall of the concave of the hand clamping fixture 1 in a penetrating and sliding manner and is used for accurately positioning and limiting the tooth blocks on the racks;
firstly, when rack assembly is carried out, the sawtooth structure on the rack is correspondingly matched and connected with the sawtooth structure at the bottom of the positioning strip 4, so that the rack is conveniently and rapidly positioned, the sliding electrified contact strip 6 is utilized to provide energy output for the first electromagnet 7 when the positioning strip 4 moves or not, the first electromagnet 7 generates magnetism to produce a magnetic attraction effect after positioning on the rack, and meanwhile, the sawtooth structure on the rack is matched with the sawtooth structure at the bottom of the positioning strip 4, and when the positioning strip 4 moves axially, the rack at the bottom of the positioning strip 4 is conveniently driven to move synchronously.
With the technical proposal shown in fig. 3-4, the middle part of the top of the intermediate piece 2 and the splicing piece 3 are both connected with the end bolt of the output shaft of the hydraulic component in a positioning way, the clamping fixture 1 is also provided with a front side pressing clamping assembly and a rear side pressing clamping assembly of the rack, and the rack is subjected to wrapped pressing fixing of the outer wall of the outer side; the pressing and clamping assembly comprises a propelling liquid cavity 101 and a motor screw rod assembly 102 at the top of the clamping fixture 1, an output shaft of the motor screw rod assembly 102 penetrates into the propelling liquid cavity 101 through a sealing bearing, a liquid sealing plate 103 is arranged on the outer wall of the output shaft of the motor screw rod assembly 102 positioned in the propelling liquid cavity 101 in a threaded manner, meanwhile, a flow guide pipe 104 is connected to the left side and the right side of the propelling liquid cavity 101, a pressurizing cavity 105 is arranged at the tail end of the flow guide pipe 104 in a penetrating manner, the pressurizing cavity 105 is positioned at the tail end of the outer side wall of the clamping fixture 1, and a clamping piece 106 is arranged at one side of the pressurizing cavity 105 in a penetrating manner; the outer edge of the liquid sealing plate 103 is sleeved with a sealing strip, an axial fit and radial clamping sealing type sliding installation structure is formed between the outer edge of the liquid sealing plate 103 and the inner wall of the propulsion liquid cavity 101, oil liquid is sequentially arranged in the propulsion liquid cavity 101, the honeycomb duct 104 and the compression cavity 105 in a penetrating way, and meanwhile the compression cavity 105 and the clamping piece 106 form a sealing fit relative telescopic structure;
when the motor screw rod assembly 102 is rotated and started, the motor screw rod assembly 102 rotates to drive the liquid seal plate 103 in the propulsion liquid cavity 101 to change in position through the threaded connection structure, and when the position is moved, the liquid seal plate 103 pushes oil in the propulsion liquid cavity 101 to flow in a diversion mode, so that the oil is pressurized and guided into the pressurizing cavity 105, a clamping piece 106 in the pressurizing cavity 105 transversely extends outwards, the outer wall of the rack is laterally extruded through the action of the clamping piece 106 and oil pressure, lateral pressurization fixation of the rack is achieved, and installation limit of the rack is further reinforced.
According to the technical scheme as shown in fig. 4-5, a pressurized liquid cavity 1061 is further fixed inside one side of the clamping piece 106 facing the middle part of the hand clamping device 1, positioning cylinders 1062 are installed on the pressurized liquid cavity 1061 at equal intervals, one end of a liquid sealing rod 1063 is connected in the positioning cylinders 1062 in a penetrating manner, the other end of the liquid sealing rod 1063 is fixed on a clamping plate 1064, a spring is installed outside the liquid sealing rod 1063 between the positioning cylinders 1062 and the clamping plate 1064, and an elastic liquid bag 1065 is arranged on the outer wall of one side of the clamping plate 1064 facing the rack; the tail end of the liquid sealing rod 1063 in the positioning cylinder 1062 and the inner wall of the positioning cylinder 1062 form a sliding connection structure in a sealing fit manner, the positioning cylinder 1062 and the liquid sealing rod 1063 form an axial relative telescopic structure, and oil is arranged in the positioning cylinder 1062 and the pressurized liquid cavity 1061; the elastic liquid bag 1065 is also communicated with the inside of the pressurized liquid cavity 1061 through a thin pipe;
when the clamping piece 106 extrudes and clamps the side wall of the rack, due to the thickness difference of the rack, the clamping plate 1064 on the upper layer of the side surface of the clamping piece 106 and the elastic liquid bag 1065 corresponding to the clamping plate 1064 directly act on the side wall of the rack and stretch out and draw back, the clamping plate 1064 on the lower layer of the side surface of the clamping piece 106 directly extends to the bottom of the rack, the bottom of the rack is supported in an upward limiting manner, meanwhile, due to the relative acting force between the rack and the clamping plate 1064, the clamping plate 1064 can be better attached to the outer wall of the rack when stretching or extending, so that the positioning of the clamping plate 1064 is more stable, meanwhile, the elastic liquid bag 1065 directly forms a wrapping and positioning effect on the outer wall of the rack due to the pressurizing introduction of oil liquid in the pressurizing liquid cavity 1061, the integral installation of the rack is more stable, the rack has an effective damping effect, and positioning looseness of the rack caused by vibration during use and docking can not influence the docking precision.
In the second embodiment, the following technical scheme is also disclosed on the splicing handle disclosed in the first embodiment:
according to the technical scheme shown in fig. 6-10, the bottom of the splicing piece 3 is also provided with an axial movement limiting mechanism of the positioning strip 4, and the movement limiting mechanism is used for the movement of the rack and the accurate butt joint of the tail end; the positioning strip 4 is provided with a positioning groove 5 towards the top end of the splicing piece 3, the top of the positioning strip 4 is fixedly provided with a sliding electrifying contact strip 6, the sliding electrifying contact strip 6 is electrically connected with a contact electrifying support in the middle piece 2, the bottom of the positioning strip 4 is provided with tooth blocks which are mutually matched with racks to be processed, the front side wall and the rear side wall of the positioning strip 4 are provided with guiding sliding grooves, and the guiding sliding grooves on the positioning strip 4 and the sliding blocks 8 in the clamping fixture 1 form a clamping sliding connection structure;
a first electromagnet 7 is also fixed in the positioning strip 4, and the first electromagnet 7 is electrically connected with the sliding energizing contact strip 6; a movable reset member of the positioning strip 4 is also arranged between the positioning strip 4 and the clamping fixture 1;
through setting up axial displacement stop gear, realize the rack axial displacement at locating strip 4 and its bottom top for two racks that need butt joint processing can stabilize the orientation, carry out end position connection, convenient follow-up use that continues, locating strip 4 is when sliding simultaneously, contact circular telegram contact strip 6 through the slip of installing on it and contact circular telegram support laminating sliding connection in the middleware 2, make the required electric energy that the maintenance first electromagnet 7 that locating strip 4 can be stable when removing, make first electromagnet 7 can last to have good spacing effect to the rack of its location.
As shown in fig. 9-10, the movable reset member of the positioning strip 4 can facilitate the initial positioning of the positioning strip 4 and the integral position reset function after the rack is driven to move and process, and the first movable reset member of the positioning strip 4 comprises an elastic piece 9 fixed between a guide chute and a sliding block 8 and is used for resetting the positioning strip 4 and the clamping fixture 1 relative to the axial telescopic movement; the elastic effect of the elastic piece 9 is directly utilized, so that the positioning strip 4 is restored to the original position after the rack is driven and processed;
the second type of movable reset member of the positioning strip 4 comprises a magnetic sliding block 8, a second electromagnet 10 embedded and installed in the positioning strip 4 at the side of the sliding block 8, and a pressing switch 11 at the bottom of the positioning groove 5, wherein the pressing switch 11 is electrically connected with the second electromagnet 10, and meanwhile, the inner walls of the guide sliding grooves on the front side wall and the rear side wall of the positioning strip 4 are made of ceramic materials for isolating magnetism; when the second type of movable reset member is used, firstly, the magnetic effect between the iron core of the second electromagnet 10 and the sliding block 8 is utilized to achieve the initial positioning of the whole original position installation state of the positioning strip 4, then when the positioning strip 4 moves, the pressing switch 11 on the movable reset member is closed by the lifting rod 303 driven by the positioning strip 4 to enable the second electromagnet 10 to generate magnetism and the sliding block 8 to repel each other, and the reset effect of the two circuits where the second electromagnet 10 is driven by the positioning strip 4 and subsequently disconnected is achieved, so that the movable reset member is convenient and efficient to use.
The third embodiment discloses a driving movement limiting mechanism of the positioning strip 4, wherein the positioning strip 4 is utilized to synchronously drive a rack with a bottom limit to axially move and limit, so that the rack is stable in operation during splicing, and meanwhile, shearing fracture due to vibration action is avoided during splicing;
by adopting the technical scheme as shown in fig. 6-8 and 11-12, the movement limiting mechanism of the positioning strip 4 comprises a guiding movement cavity 301 which is arranged at the bottom of the splicing piece 3 in an intrusion manner, a movement positioning block 302 is arranged at the bottom of the guiding movement cavity 301 in a penetrating manner, a lifting rod 303 is arranged at the middle part of the movement positioning block 302 in a penetrating manner, a spring is fixed between the guiding movement positioning block 301 and the lifting rod, an electromagnet is further arranged in the movement positioning block 302, meanwhile, a power-on sliding groove 304 and a magnetic plate 305 are arranged on the inner wall of the top of the guiding movement cavity 301 in a staggered and parallel manner, and the magnetism of the bottom surface of the magnetic plate 305 is the same as the working magnetism of the electromagnet in the movement positioning block 302; the electrifying sliding groove 304 and the lifting rod 303 are vertically distributed, and the upper half section of the lifting rod 303 is provided with an electrifying member which is used for electrically connecting the electrifying sliding groove 304 with the electromagnet in the movable positioning block 302;
the lifting rod 303 and the movable positioning block 302 form a penetrating axial telescopic structure, an energizing member at the upper half section of the lifting rod 303 is also connected with a third electromagnet 306 in series, the third electromagnet 306 is fixed on the outer wall of the movable positioning block 302 positioned in the guiding and moving cavity 301, a fourth electromagnet 307 is also fixed on the inner wall of the guiding and moving cavity 301 facing the surface of the third electromagnet 306, and a ball is arranged at the bottom of the third electromagnet 306; the diameter of the bottom surface of the lifting rod 303 is smaller than the inner diameter of the positioning groove 5, and the electromagnet in the movable positioning block 302 is magnetically adsorbed and connected with the positioning strip 4;
in the above technical solution, the metal shell on the movable positioning block 302 is magnetically attracted to the iron core structure and the magnetic plate 305, so that the movable positioning block 302 performs magnetic positioning at the position, no offset occurs, the butt joint assembly of the upper lifting rod 303 and the positioning groove 5 on the positioning strip 4 is facilitated, after the butt joint assembly of the upper lifting rod 303 and the positioning strip, the lifting rod 303 is compressed and relatively stretches upwards to enable the electrified member at the upper half section of the lifting rod 303 to be in contact with the electrified sliding groove 304, the closing of the circuit where the electromagnet and the third electromagnet 306 are located in the movable positioning block 302 is maintained, when the electromagnet in the movable positioning block 302 generates electrified magnetism, the magnetism and the magnetic plate 305 are directly repelled, so that the movable positioning block 302 is not positioned any more, and meanwhile, the contact friction force is reduced by utilizing the magnetism repulsion, so that the movement is smoother, the magnetism of the electromagnet in the movable positioning block 302 can also perform magnetic effect on the positioning strip 4, and the positioning strip 4 is more stable and smooth in positioning and moving;
and magnetism of the third electromagnet 306 is generated, and magnetism generation and magnetic intensity adjustment of the fourth electromagnet 307 are controlled manually through a numerical control system, so that repulsive force and attractive force between magnetism are conveniently utilized, movement and limiting states of the positioning strip 4 positioned at the bottom of the movable positioning block 302 and the rack are changed, butt joint and subsequent continuous connection processing between the tail ends of the rack are convenient, and the magnetic effect is positioned, so that continuous connection positioning shearing caused by vibration can be reduced, and continuous connection of the tail ends of the rack is more stable and rapid.
The invention also discloses a splicing positioning method of the high-precision rack splicing gripper, which comprises the following specific splicing steps:
s1, lifting a clamping fixture 1 and a middle piece 2 by utilizing a hydraulic component, enabling a rack serrated surface to be processed to be matched and attached with a bottom serrated surface of a positioning strip 4, and achieving preliminary connection limit between the rack and the positioning strip 4 through a first electromagnet 7 in the positioning strip 4;
s2, changing the position of a liquid sealing plate 103 through starting of a motor screw rod assembly 102, and adjusting oil pressure in a propulsion liquid cavity 101 and a pressurizing cavity 105 to enable a clamping piece 106 in the pressurizing cavity 105 to extend outwards, so that lateral clamping and positioning are carried out on the outer wall of a rack to be processed;
the clamping piece 106 continuously applies lateral extrusion to the outer wall of the rack, the clamping plate 1064 and the liquid blocking rod 1063 move transversely in the clamping piece 106, the oil pressure in the pressurized liquid cavity 1061 is changed, the clamping plate 1064 extruded by the side wall of the rack is contracted, the clamping plate 1064 extruded by the side wall of the rack is not stretched outwards, and the oil in the pressurized liquid cavity 1061 is guided into the elastic liquid bag 1065 under the action of pressure to expand and position the outer wall of the rack to be processed in a wrapped type pressurizing and clamping mode.
S3, after the racks are limited and clamped, the splicing piece 3 and the clamping fixture 1 are mutually spliced through lifting of the splicing piece 3, the lower end of the lifting rod 303 is inserted into the positioning groove 5 of the positioning strip 4, the upper end of the telescopic operation of the lifting rod 303 is connected with the electrified sliding groove 304, a circuit where the electromagnet in the movable positioning block 302 is located is closed, magnetism generated by the electromagnet is repulsed with the magnetic plate 305, the magnetic attraction force between the magnetic plate 305 and the movable positioning block 302 is relieved, movement of the movable positioning block 302 is facilitated, and meanwhile, the electromagnet and the positioning strip 4 are magnetically attracted and positioned;
s4, adjusting the movable positioning block 302 to axially move and limit the positioning strip 4 and the rack to be processed through the magnetic action external force between the third electromagnet 306 and the fourth electromagnet 307, so that the butt joint of the tail end of the rack to be processed is convenient and stable, and the dislocation of the tail end of the rack to be processed cannot occur due to the vibration action during the continuous connection through the axial pressurization and the magnetic adsorption positioning action.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (13)
1. A high precision rack splice grip comprising:
the clamping hand clamp (1) is fixed on the left side and the right side of the middle piece (2), the clamping hand clamp and the middle piece form clamping members of racks, and a splicing piece (3) is arranged between the adjacent rack clamping members;
characterized by further comprising:
the middle part of the top of the middle part is connected with the tail end of an output shaft of the hydraulic component in a bolt positioning way, and the clamping fixture (1) is also provided with a front side and a rear side pressing clamping component of the rack to perform wrapped pressing fixing on the outer wall of the outer side of the rack;
the positioning strip (4) is arranged at the inner wall of the concave of the hand clamping fixture (1) in a penetrating and sliding manner and is used for accurately positioning and limiting the tooth block on the rack;
the bottom of the continuous connecting piece (3) is also provided with an axial movement limiting mechanism of a positioning strip (4), and the movement limiting mechanism is used for moving racks and accurately butting the tail ends.
2. The high precision rack bar follow-up hand grip of claim 1, wherein: the clamping fixture (1) and the splicing piece (3) are both arranged in an n-shaped structure, and rack clamping members formed by the clamping fixture (1) and the middle piece (2) are symmetrically distributed about the vertical central axis of the splicing piece (3) and are used for clamping and splicing two different racks.
3. The high precision rack bar follow-up hand grip of claim 1 or 2, wherein: the pressing clamping assembly comprises a propelling liquid cavity (101) at the top of the clamping fixture (1) and a motor screw rod assembly (102), an output shaft of the motor screw rod assembly (102) penetrates into the propelling liquid cavity (101) through a sealing bearing, a liquid sealing plate (103) is mounted on the outer wall of the output shaft of the motor screw rod assembly (102) located inside the propelling liquid cavity (101) in a threaded mode, meanwhile, a flow guide pipe (104) is connected to the left side and the right side of the propelling liquid cavity (101), a pressurizing cavity (105) is mounted at the tail end of the flow guide pipe (104) in a penetrating mode, the pressurizing cavity (105) is located at the tail end position of the outer side wall of the clamping fixture (1), and a clamping piece (106) is mounted at one side of the pressurizing cavity (105) in a penetrating mode.
4. A high precision rack bar follow-up hand grip as claimed in claim 3, wherein: the sealing strip is sleeved at the outer edge of the liquid sealing plate (103), an axial fit and radial clamping sealing sliding mounting structure is formed between the outer edge of the liquid sealing plate (103) and the inner wall of the propelling liquid cavity (101), oil liquid is sequentially and completely arranged inside the propelling liquid cavity (101), the guide pipe (104) and the pressurizing cavity (105), and meanwhile the pressurizing cavity (105) and the clamping piece (106) form a sealing fit relative telescopic structure.
5. A high precision rack bar follow-up hand grip as claimed in claim 3 or 4, wherein: the clamping piece (106) is fixed with a pressurizing liquid cavity (1061) towards the inside of one side of the middle part of the clamping fixture (1), a positioning cylinder (1062) is installed on the pressurizing liquid cavity (1061) at equal intervals, one end of a liquid sealing rod (1063) is connected in the positioning cylinder (1062) in a penetrating mode, the other end of the liquid sealing rod (1063) is fixed on a clamping plate (1064), a spring is installed on the outer side of the liquid sealing rod (1063) between the positioning cylinder (1062) and the clamping plate (1064), and an elastic liquid bag (1065) is arranged on the outer wall of one side of the clamping plate (1064) towards the rack.
6. The high precision rack bar follow-up hand grip of claim 5, wherein: the tail end of the liquid sealing rod (1063) positioned in the positioning cylinder (1062) and the inner wall of the positioning cylinder (1062) form a sliding connection structure in a sealing fit manner, the positioning cylinder (1062) and the liquid sealing rod (1063) form an axial relative telescopic structure, and oil is arranged in the positioning cylinder (1062) and the pressurized liquid cavity (1061);
the elastic liquid bag (1065) is also communicated with the inside of the pressurized liquid cavity (1061) through a thin pipe.
7. The high precision rack bar follow-up hand grip of claim 1, wherein: the positioning strip (4) is provided with a positioning groove (5) towards the tail end of the top of the splicing piece (3), the top of the positioning strip (4) is fixedly provided with a sliding electrifying contact strip (6), the sliding electrifying contact strip (6) is electrically connected with a contact electrifying support in the middle piece (2), the bottom of the positioning strip (4) is provided with tooth blocks which are mutually matched with racks to be processed, the front side wall and the rear side wall of the positioning strip (4) are provided with guiding sliding grooves, and the guiding sliding grooves on the positioning strip (4) and the sliding blocks (8) in the hand clamping fixture (1) form a clamping sliding connection structure;
a first electromagnet (7) is also fixed in the positioning strip (4), and the first electromagnet (7) is electrically connected with the sliding energizing contact strip (6);
and a movable reset component of the positioning strip (4) is further arranged between the positioning strip (4) and the clamping fixture (1).
8. The high precision rack bar follow-up hand grip of claim 7, wherein: the first movable reset component of the positioning strip (4) comprises an elastic piece (9) fixed between a guide chute and a sliding block (8) and is used for resetting the positioning strip (4) and the clamping fixture (1) relative to axial telescopic movement.
9. The high precision rack bar follow-up hand grip of claim 7, wherein: the second type of movable reset member of the locating strip (4) comprises a slider (8) which is arranged to be magnetic, a second electromagnet (10) which is embedded and installed in the locating strip (4) at the side of the slider (8), and a pressing switch (11) at the bottom of the locating groove (5), wherein the pressing switch (11) is electrically connected with the second electromagnet (10), and meanwhile, the inner walls of the guide sliding grooves on the front side wall and the rear side wall of the locating strip (4) are made of ceramic materials which isolate magnetism.
10. The high precision rack bar follow-up hand grip of claim 1, wherein: the movable limiting mechanism of the positioning strip (4) comprises a guide movable cavity (301) which is arranged at the bottom of the splicing piece (3) in an intrusion mode, a movable positioning block (302) is arranged at the bottom of the guide movable cavity (301) in a penetrating mode, a lifting rod (303) is arranged at the middle of the movable positioning block (302) in a penetrating mode, a spring is fixed between the guide movable cavity and the movable positioning block, an electromagnet is further arranged in the movable positioning block (302), meanwhile, a power-on sliding groove (304) and a magnetic plate (305) are arranged on the inner wall of the top of the guide movable cavity (301) in a staggered parallel mode, and the magnetism of the bottom surface of the magnetic plate (305) is identical to the working magnetism of the electromagnet in the movable positioning block (302);
the electrifying sliding grooves (304) and the lifting rods (303) are vertically distributed, and electrifying members are arranged on the upper half sections of the lifting rods (303) and are used for electrically connecting the electrifying sliding grooves (304) with electromagnets in the movable positioning blocks (302).
11. The high precision rack bar follow-up hand grip of claim 10, wherein: the lifting rod (303) and the movable positioning block (302) form a penetrating axial telescopic structure, an energizing member at the upper half section of the lifting rod (303) is connected in series with a third electromagnet (306), the third electromagnet (306) is fixed on the outer wall of the movable positioning block (302) positioned in the guiding movable cavity (301), a fourth electromagnet (307) is further fixed on the inner wall of the guiding movable cavity (301) of the direction face of the third electromagnet (306), and balls are arranged at the bottom of the third electromagnet (306).
12. The high precision rack bar follow-up hand grip of claim 10 or 11, wherein: the diameter of the bottom surface of the lifting rod (303) is smaller than the inner diameter of the positioning groove (5), and an electromagnet in the movable positioning block (302) is magnetically adsorbed and connected with the positioning strip (4).
13. The splicing positioning method of the splicing gripper of the high-precision rack is characterized by further comprising the following specific splicing steps:
the method comprises the following steps of S1, lifting a clamping fixture (1) and a middle piece (2) by utilizing a hydraulic assembly, enabling a rack serrated surface to be processed to be anastomotic and attached to a bottom serrated surface of a positioning strip (4), and achieving preliminary connection limit between the rack and the positioning strip (4) through a first electromagnet (7) in the positioning strip (4);
s2, changing the position of a liquid sealing plate (103) through starting of a motor screw rod assembly (102), and adjusting oil pressure in a propulsion liquid cavity (101) and a pressurizing cavity (105) to enable a clamping piece (106) in the pressurizing cavity (105) to extend outwards, so that lateral clamping and positioning are carried out on the outer wall of a rack to be processed;
the clamping piece (106) continuously applies lateral extrusion to the outer wall of the rack, the clamping plate (1064) and the liquid blocking rod (1063) move transversely in the clamping piece (106), the oil pressure in the pressurized liquid cavity (1061) is changed, the clamping plate (1064) extruded with the side wall of the rack is contracted, the clamping plate (1064) not extruded with the side wall of the rack extends outwards, and oil in the pressurized liquid cavity (1061) is guided into the elastic liquid bag (1065) under the action of pressure to expand and clamp the outer wall of the rack to be processed in a wrapped type;
s3, after the racks are clamped in a limiting mode, the splicing piece (3) and the clamping fixture (1) are spliced with each other through lifting of the splicing piece (3), the lower end of the lifting rod (303) is inserted into the positioning groove (5) of the positioning strip (4), the upper telescopic operation end of the lifting rod (303) is connected with the electrified sliding groove (304), a circuit where an electromagnet in the movable positioning block (302) is located is closed, magnetism generated by the electromagnet is repelled with the magnetic plate (305), the magnetic attraction force between the magnetic plate (305) and the movable positioning block (302) is relieved, movement of the movable positioning block (302) is facilitated, and meanwhile the electromagnet and the positioning strip (4) are magnetically attracted and positioned;
s4, adjusting the movable positioning block (302), the positioning strip (4) and the rack to be processed to axially move and limit through the magnetic action external force between the third electromagnet (306) and the fourth electromagnet (307), so that the butt joint of the tail end of the rack to be processed is convenient and stable, and the dislocation of the tail end of the joint of the rack can not occur due to the vibration action during the joint through the axial pressurization and the magnetic adsorption positioning action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310982952.7A CN116786912B (en) | 2023-08-07 | 2023-08-07 | High-precision rack splicing gripper and splicing positioning method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310982952.7A CN116786912B (en) | 2023-08-07 | 2023-08-07 | High-precision rack splicing gripper and splicing positioning method thereof |
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| CN116786912A true CN116786912A (en) | 2023-09-22 |
| CN116786912B CN116786912B (en) | 2024-01-23 |
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Cited By (1)
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| CN117886138A (en) * | 2024-03-14 | 2024-04-16 | 山西新元自动化仪表有限公司 | Dust suppression bucket convenient to accurate regulation and control |
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| CN116786912B (en) | 2024-01-23 |
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