CN114952359A - Modular combined workpiece clamping mechanism for large machine tool - Google Patents
Modular combined workpiece clamping mechanism for large machine tool Download PDFInfo
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- CN114952359A CN114952359A CN202210894408.2A CN202210894408A CN114952359A CN 114952359 A CN114952359 A CN 114952359A CN 202210894408 A CN202210894408 A CN 202210894408A CN 114952359 A CN114952359 A CN 114952359A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 96
- 210000000078 claw Anatomy 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 13
- 241000446313 Lamella Species 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 5
- 210000003437 trachea Anatomy 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 15
- 230000003044 adaptive effect Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 2
- 235000015246 common arrowhead Nutrition 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/088—Work-clamping means other than mechanically-actuated using vacuum means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a modular combined workpiece clamping mechanism for a large-scale machine tool, which comprises a self-adaptive air pressure compensation mechanism, a single-petal three-way control mechanism, a three-way valve supporting assembly and a workpiece processing and fixing assembly. The invention belongs to the technical field of machine tool workpiece clamping, in particular to a modular combined large-scale machine tool workpiece clamping mechanism; the invention aims to solve the problem of air leakage of the sucker, which is difficult to avoid due to the rough surface, and the invention creatively provides a self-adaptive air pressure compensation mechanism based on a negative feedback principle, a piston which controls sliding through air pressure can sense the vacuum degree in the sucker, the sucker is connected with a preset vacuum bottle when the vacuum degree is lower than a certain value, and the air pressure fluctuation of the sucker is compensated through the vacuum bottle, so that the technical purpose of preventing the adsorption force from being excessively reduced is realized; moreover, the invention also creatively provides a single-clack three-way control mechanism, the switching of three different airflow loops can be controlled through one group of three-way valves, and the structure is ingenious.
Description
Technical Field
The invention belongs to the technical field of clamping of machine tool workpieces, and particularly relates to a modular combined large-scale machine tool workpiece clamping mechanism.
Background
In the field of machining, a workpiece is often fixed on a workbench through a pressing block, then cutting machining is performed through rotation and movement of a cutter, the existing workpiece is generally fixed through extrusion or friction force, the pressing block needs to be attached to the upper surface or the side surface of the workpiece in general, and a machining area of the cutter is also the upper surface and the side surface of the workpiece, so that a machining blind area inevitably exists in a traditional clamping mode.
Therefore, some modes of fixing the workpiece from the bottom are provided, and mainly include three modes of air pressure adsorption fixing, bonding fixing and magnetic adsorption fixing, wherein the bonding fixing is not easy to clean, and the magnetic adsorption fixing only can fix iron and steel, so that the air pressure adsorption fixing is the fixing mode with the widest application range.
However, due to the problem of surface roughness of the bottom adsorption surface, a small-amplitude air leakage phenomenon is inevitably generated in the processing process (because the adsorption surface needs to be processed firstly before adsorption, the situation of large-amplitude air leakage cannot occur).
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides a modularized combined large-scale machine tool workpiece clamping mechanism which can be flexibly combined for use, can automatically compensate air pressure through negative feedback adjustment when air leaks in a small amplitude, and can prevent the reduction of the adsorption force; in order to solve the problem of air leakage of the sucker, which is difficult to avoid due to the rough surface, the invention creatively provides a self-adaptive air pressure compensation mechanism based on a negative feedback principle, a piston which controls sliding through air pressure can sense the vacuum degree in the sucker, the sucker is connected with a preset vacuum bottle when the vacuum degree is lower than a certain value, and the air pressure fluctuation of the sucker is compensated through the vacuum bottle, so that the technical purpose of preventing the over-reduction of the adsorption force is realized.
Moreover, the invention also creatively provides a single-clack three-way control mechanism, the switching of three different airflow loops can be controlled through a group of three-way valves, and the structure is ingenious, simple and high in practicability.
The technical scheme adopted by the invention is as follows: the invention provides a modular combined large-scale machine tool workpiece clamping mechanism, which comprises an adaptive air pressure compensation mechanism, a single-petal three-way control mechanism, a three-way valve support assembly and a workpiece processing and fixing assembly, wherein the three-way valve support assembly is clamped in the workpiece processing and fixing assembly, the three-way valve support assembly has the function of supporting the adaptive air pressure compensation mechanism and the single-petal three-way control mechanism, the adaptive air pressure compensation mechanism and the single-petal three-way control mechanism are fixed on the workpiece processing and fixing assembly and can adjust the number and the position according to the actual working conditions, the three-way valve support assembly array is provided with a plurality of groups, the single-petal three-way control mechanism is arranged on the three-way valve support assembly, the single-petal three-way control mechanism firstly provides a valve body structure, and can switch various gas loops in the scheme through one control valve, the purpose of simplifying the structure, improving the integration level and the convenient operation degree is realized, one side of single-petal three-way control mechanism is located to self-adaptation atmospheric pressure compensation mechanism, can respond to the atmospheric pressure change in the vacuum chuck in real time through self-adaptation atmospheric pressure compensation mechanism to compensate, keep vacuum chuck's suction to atmospheric pressure in certain extent when atmospheric pressure reduces.
Further, self-adaptation atmospheric pressure compensation mechanism includes vacuum compensation storage component and vacuum feedback subassembly, one side that single lamella formula three-way control mechanism was located in the block of vacuum compensation storage component, the vacuum feedback subassembly slides and locates in the vacuum compensation storage component.
Preferably, the vacuum compensation storage assembly comprises an air pressure compensation three-way pipe, a square sliding sleeve and a vacuum bottle, wherein a three-way pipe straight port is arranged at one end of the air pressure compensation three-way pipe, the air pressure compensation three-way pipe is clamped on one side of the single-petal three-way control mechanism through the three-way pipe straight port, a three-way pipe blind port is arranged at the other end of the air pressure compensation three-way pipe, a three-way pipe top port is further arranged on the air pressure compensation three-way pipe, the square sliding sleeve is clamped in the three-way pipe blind port, the vacuum bottle is clamped in the three-way pipe top port, the internal vacuum degree of the vacuum bottle is smaller than that of the vacuum sucker, therefore, after the air pressure compensation three-way pipe and the three-way pipe blind port are communicated with each other, the vacuum sucker can be compensated through the vacuum sucker, and the compensation speed depends on the size of the superposition area of the three-way pipe top port and the piston vent.
As a further preferred aspect of the present invention, the vacuum feedback assembly comprises an air pressure sensing piston, a vacuum countermeasure tension spring and a rigid limit slide rod, the air pressure sensing piston is clamped and slidably arranged in the air pressure compensation three-way pipe, the inner walls of the air pressure sensing piston and the air pressure compensation three-way pipe are in sliding and sealing contact, a piston overhanging eaves part is annularly and uniformly arranged at one end of the air pressure sensing piston, a piston vent hole is arranged at the upper edge of the piston overhanging eaves part of the air pressure sensing piston, the air pressure sensing piston always seals the top opening of the three-way pipe and can slide when the air pressure in the vacuum chuck changes, so as to control the opening and closing of the piston vent hole and the opening and closing amplitude and adaptively compensate the vacuum degree of the vacuum chuck, a piston tail connecting groove is arranged at the other end of the air pressure sensing piston, and the vacuum countermeasure tension spring is arranged between the blind opening of the three-way pipe and the air pressure sensing piston, the rigid limiting slide rod is in sliding contact with the square sliding sleeve, and the rigid limiting slide rod is fixedly connected into a connecting groove at the tail of the piston.
Further, single lamella formula three-way control mechanism includes single lamella formula three way component and adsorbs the supporting component, single lamella formula three way component locates on the three way valve supporting component, adsorb the supporting component and locate on the single lamella formula three way component.
As preferred, single lamella formula three way component includes three way valve body, drives valve rod, arc valve clack and vacuum trachea, three way valve body locates on the three way valve supporting component, three way valve body's one end is equipped with the trachea joint, three way valve body's the other end is equipped with compensation mechanism and connects, three way valve body's top is equipped with the sucking disc and connects, three way valve body's front and back end symmetry is equipped with the sealed articulated platform of valve rod, drive the valve rod rotation and locate in the sealed articulated platform of valve rod, be equipped with the valve rod handle on driving the valve rod, drive the valve rod and be equipped with the instruction arrow head on the valve rod handle, be equipped with the flange mounting axle sleeve on the arc valve clack, the arc valve clack is located on driving the valve rod through flange mounting axle sleeve block, the arc valve clack rotates and locates in three way valve body, and the arc valve clack can demonstrate different air current return circuits when rotatory trachea joint, sucking disc joint and compensation mechanism joint department respectively, thereby achieving different operational objectives.
The vacuum air pipe is clamped in the air pipe joint, and the air pressure compensation three-way pipe is clamped in the compensation mechanism joint through a straight port of the three-way pipe.
The cambered surface width of the arc valve clack is greater than the diameters of the air pipe joint and the sucker joint, and the cambered surface width of the arc valve clack is smaller than the diameter of the compensation mechanism joint.
As a further preferred aspect of the present invention, the adsorption support assembly includes a support plate and a vacuum chuck, the support plate is provided with an installation sleeve ring, the support plate is clamped on the chuck connector through the installation sleeve ring, the support plate is annularly and uniformly provided with support claws on the installation sleeve ring, the vacuum chuck is clamped in the chuck connector, the support claw can support the workpiece to be processed, the vacuum chuck can adsorb the workpiece to be processed, and the vacuum chuck and the support claw are matched to clamp and fix the workpiece to be processed.
Furthermore, the three-way valve supporting assembly comprises a T-shaped sliding block and a fastening nut, the T-shaped sliding block is arranged in the workpiece processing fixing assembly in a sliding mode, a sliding block screw rod is arranged on the T-shaped sliding block, the fastening nut is in threaded connection with the sliding block screw rod, an arc-shaped valve seat is arranged at the top of the T-shaped sliding block, and the three-way valve body is fixedly connected into the arc-shaped valve seat.
Further, the workpiece processing fixing assembly comprises a T-shaped fixture mounting plate and a workpiece to be processed, inverted T-shaped sliding grooves are formed in the T-shaped fixture mounting plate in an array mode, the T-shaped sliding blocks are clamped in the inverted T-shaped sliding grooves, the workpiece to be processed is arranged on the supporting claw, and the vacuum chuck can adsorb the workpiece to be processed.
The invention with the structure has the following beneficial effects:
(1) the three-way valve supporting assembly has the function of supporting the self-adaptive air pressure compensation mechanism and the single-petal three-way control mechanism, the self-adaptive air pressure compensation mechanism and the single-petal three-way control mechanism are fixed on the workpiece processing fixing assembly, and the number and the position can be adjusted according to the actual working condition;
(2) the single-petal three-way control mechanism firstly provides a valve body structure, and can switch various gas loops in the scheme through one control valve, thereby achieving the purposes of simplifying the structure and improving the integration level and the operation convenience;
(3) the self-adaptive air pressure compensation mechanism can sense the air pressure change in the vacuum sucker in real time, and compensate the air pressure within a certain range when the air pressure is reduced, so as to keep the suction force of the vacuum sucker;
(4) the internal vacuum degree of the vacuum bottle is smaller than that of the vacuum sucker, so that when the vacuum bottle and the vacuum sucker are communicated, the vacuum sucker can be compensated and the suction force of the vacuum sucker can be kept, and the compensation speed depends on the size of the overlapping area of the top opening of the three-way pipe and the air hole of the piston;
(5) the air pressure induction piston always plugs the top port of the three-way pipe and can slide when the air pressure in the vacuum chuck changes, so that the opening and closing of the air holes of the piston and the opening and closing amplitude are controlled, and the vacuum degree of the vacuum chuck is compensated in a self-adaptive manner;
(6) the arc valve clack can present different airflow loops when respectively rotating to the joint of the air pipe joint, the suction cup joint and the compensation mechanism joint, thereby realizing different operation purposes;
(7) the workpiece to be processed can be supported through the supporting claw, the workpiece to be processed can be adsorbed through the vacuum chuck, and the workpiece to be processed is clamped and fixed under the cooperation of the supporting claw and the vacuum chuck.
Drawings
Fig. 1 is a perspective view of a modular combined workpiece clamping mechanism for a large-scale machine tool according to the present invention;
fig. 2 is a front view of a modular combined workpiece clamping mechanism for a large machine tool according to the present invention;
fig. 3 is a top view of a modular combined workpiece clamping mechanism for a large-scale machine tool according to the present invention;
FIG. 4 is a cross-sectional view taken along section line A-A of FIG. 2;
FIG. 5 is a cross-sectional view taken along section line B-B of FIG. 4;
FIG. 6 is a cross-sectional view taken along section line C-C of FIG. 5;
fig. 7 is a schematic structural diagram of an adaptive air pressure compensation mechanism of a modular combined large-scale machine tool workpiece clamping mechanism according to the present invention;
FIG. 8 is a schematic structural diagram of a single-petal three-way control mechanism of a modular combined large-scale machine tool workpiece clamping mechanism according to the present invention;
fig. 9 is a schematic structural diagram of a three-way valve supporting component of a modular combined large-scale machine tool workpiece clamping mechanism according to the invention;
fig. 10 is a schematic structural view of a workpiece processing fixing component of a modular combined large-scale machine tool workpiece clamping mechanism provided by the invention;
FIG. 11 is an enlarged view of a portion of FIG. 4 at I;
FIG. 12 is an enlarged view of a portion of FIG. 4 at II;
fig. 13 is a partial enlarged view of fig. 5 at iii.
Wherein, 1, self-adapting air pressure compensation mechanism, 2, single-flap three-way control mechanism, 3, three-way valve supporting component, 4, workpiece processing fixing component, 5, vacuum compensation storage component, 6, vacuum feedback component, 7, air pressure compensation three-way pipe, 8, square sliding sleeve, 9, vacuum bottle, 10, air pressure sensing piston, 11, vacuum counter tension spring, 12, rigid limit sliding rod, 13, three-way pipe straight mouth, 14, three-way pipe blind mouth, 15, three-way pipe top mouth, 16, piston suspension part, 17, piston vent hole, 18, single-flap three-way component, 19, adsorption supporting component, 20, three-way valve body, 21, driving valve rod, 22, arc valve flap, 23, vacuum air pipe, 24, supporting disk, 25, vacuum sucker, 26, air pipe joint, 27, sucker joint, 28, compensation mechanism joint, 29, valve rod sealing hinge joint platform, 30, valve rod handle, 31. the machining tool comprises an indication arrow head, 32, a flange mounting shaft sleeve, 33, a mounting collar, 34, a supporting claw, 35, a T-shaped sliding block, 36, a fastening nut, 37, a sliding block screw rod, 38, an arc-shaped valve seat, 39, a T-shaped clamp mounting plate, 40, a workpiece to be machined, 41, an inverted T-shaped sliding groove, 42 and a piston tail connecting groove.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
As shown in figure 1, the invention provides a modular combined large-scale machine tool workpiece clamping mechanism, which comprises an adaptive air pressure compensation mechanism 1, a single-petal three-way control mechanism 2, a three-way valve supporting component 3 and a workpiece processing fixing component 4, wherein the three-way valve supporting component 3 is clamped in the workpiece processing fixing component 4, the three-way valve supporting component 3 has the function of supporting the adaptive air pressure compensation mechanism 1 and the single-petal three-way control mechanism 2, the adaptive air pressure compensation mechanism 1 and the single-petal three-way control mechanism 2 are fixed on the workpiece processing fixing component 4, the number and the position can be adjusted according to the actual working conditions, the three-way valve supporting component 3 is provided with a plurality of groups in array, the single-petal three-way control mechanism 2 is arranged on the three-way valve supporting component 3, the single-petal three-way control mechanism 2 firstly provides a valve body structure for the invention, and through one control valve, can switch the multiple gas return circuit in this scheme, realize simplifying the structure, improve the purpose of integrated level and convenient operation degree, one side of single lamella formula three-way control mechanism 2 is located to self-adaptation atmospheric pressure compensating mechanism 1, can respond to the atmospheric pressure change in vacuum chuck 25 in real time through self-adaptation atmospheric pressure compensating mechanism 1 to compensate, keep vacuum chuck 25's suction to atmospheric pressure in certain extent when atmospheric pressure reduces.
As shown in fig. 1, 3 and 10, the workpiece processing fixing assembly 4 includes a T-shaped fixture mounting plate 39 and a workpiece 40 to be processed, an inverted T-shaped chute 41 is arranged on the T-shaped fixture mounting plate 39 in an array, the T-shaped slider 35 is engaged with the inverted T-shaped chute 41, the workpiece 40 to be processed is arranged on the support claw 34, and the vacuum chuck 25 can adsorb the workpiece 40 to be processed.
As shown in fig. 1, 9 and 12, the three-way valve supporting assembly 3 includes a T-shaped slider 35 and a fastening nut 36, the T-shaped slider 35 is slidably disposed in the workpiece processing fixing assembly 4, a slider screw 37 is disposed on the T-shaped slider 35, the fastening nut 36 is in threaded connection with the slider screw 37, an arc-shaped valve seat 38 is disposed at the top of the T-shaped slider 35, and the three-way valve body 20 is fixedly connected to the arc-shaped valve seat 38.
As shown in fig. 1, fig. 2, fig. 4, fig. 5, fig. 6, fig. 8, fig. 12, and fig. 13, the single-petal three-way control mechanism 2 includes a single-petal three-way component 18 and an adsorption support component 19, the single-petal three-way component 18 is disposed on the three-way valve support component 3, and the adsorption support component 19 is disposed on the single-petal three-way component 18; the single-petal three-way component 18 comprises a three-way valve body 20, a driving valve rod 21, an arc valve clack 22 and a vacuum air pipe 23, the three-way valve body 20 is arranged on a three-way valve supporting component 3, one end of the three-way valve body 20 is provided with an air pipe joint 26, the other end of the three-way valve body 20 is provided with a compensation mechanism joint 28, the top of the three-way valve body 20 is provided with a suction cup joint 27, the front end and the rear end of the three-way valve body 20 are symmetrically provided with valve rod sealing hinging tables 29, the driving valve rod 21 is rotatably arranged in the valve rod sealing hinging tables 29, the driving valve rod 21 is provided with a valve rod handle 30, the driving valve rod 21 is provided with an indication arrow 31 on the valve rod handle 30, the arc valve clack 22 is provided with a flange mounting shaft sleeve 32, the arc valve clack 22 is clamped on the driving valve rod 21 through the flange mounting shaft sleeve 32, the arc valve clack 22 is rotatably arranged in the three-way valve body 20, the arc valve clack 22 can present different air flow loops when respectively rotates to the air pipe joint 26, the suction cup joint 27 and the compensation mechanism joint 28, thereby realizing different operation purposes; the vacuum air pipe 23 is clamped in the air pipe joint 26, and the air pressure compensation three-way pipe 7 is clamped in the compensation mechanism joint 28 through the three-way pipe straight port 13; the width of the arc surface of the arc valve clack 22 is larger than the diameters of the air pipe joint 26 and the suction cup joint 27, and the width of the arc surface of the arc valve clack 22 is smaller than the diameter of the compensation mechanism joint 28; adsorb supporting component 19 and include supporting disk 24 and vacuum chuck 25, be equipped with the installation lantern ring 33 on the supporting disk 24, the supporting disk 24 is located on sucking disc joint 27 through the block of installation lantern ring 33, supporting disk 24 all has laid support claw 34 in the annular on the installation lantern ring 33, vacuum chuck 25 block is located in sucking disc joint 27, can treat through support claw 34 and process work piece 40 and support, can treat through vacuum chuck 25 and process work piece 40 and adsorb, it is fixed to accomplish the centre gripping of treating processing work piece 40 under the two cooperation.
As shown in fig. 1, 4, 7, and 11, the adaptive air pressure compensation mechanism 1 includes a vacuum compensation storage component 5 and a vacuum feedback component 6, the vacuum compensation storage component 5 is clamped on one side of the single-petal three-way control mechanism 2, and the vacuum feedback component 6 is slidably disposed in the vacuum compensation storage component 5; the vacuum compensation storage component 5 comprises an air pressure compensation three-way pipe 7, a square sliding sleeve 8 and a vacuum bottle 9, wherein one end of the air pressure compensation three-way pipe 7 is provided with a three-way pipe straight port 13, the air pressure compensation three-way pipe 7 is clamped on one side of the single-petal three-way control mechanism 2 through the three-way pipe straight port 13, the other end of the air pressure compensation three-way pipe 7 is provided with a three-way pipe blind port 14, the air pressure compensation three-way pipe 7 is also provided with a three-way pipe top port 15, the square sliding sleeve 8 is clamped in the three-way pipe blind port 14, the vacuum bottle 9 is clamped in the three-way pipe top port 15, the internal vacuum degree of the vacuum bottle 9 is smaller than that of the vacuum sucker 25, therefore, when the air pressure compensation three-way pipe 7 and the three-way pipe blind port 14 are communicated with each other, the vacuum degree of the vacuum sucker 25 can be compensated through the vacuum sucker 25 by the vacuum bottle, and the compensation speed depends on the overlapping area of the three-way pipe top port 15 and the piston vent 17; the vacuum feedback assembly 6 comprises an air pressure sensing piston 10, a vacuum countermeasure tension spring 11 and a rigid limit slide rod 12, the air pressure sensing piston 10 is clamped and slidably arranged in an air pressure compensation three-way pipe 7, the air pressure sensing piston 10 is in sliding and sealing contact with the inner wall of the air pressure compensation three-way pipe 7, a piston overhanging eaves part 16 is annularly and uniformly arranged at one end of the air pressure sensing piston 10, a piston vent hole 17 is arranged at the upper edge of the piston overhanging eaves part 16 of the air pressure sensing piston 10, the air pressure sensing piston 10 always seals a top port 15 of the three-way pipe and can slide when the air pressure in the vacuum chuck 25 changes, the opening and closing amplitude of the piston vent hole 17 is further controlled, the vacuum degree of the vacuum chuck 25 is adaptively compensated, a piston tail connecting groove 42 is arranged at the other end of the air pressure sensing piston 10, the vacuum countermeasure tension spring 11 is arranged between a blind port 14 of the three-way pipe and the air pressure sensing piston 10, the rigid limit slide bar 12 is in sliding contact with the square sliding sleeve 8, and the rigid limit slide bar 12 is fixedly connected in the piston tail connecting groove 42.
When the three-way valve support assembly is used specifically, firstly, a user needs to place a proper number of three-way valve support assemblies 3 at proper positions in the inverted T-shaped sliding groove 41, the three-way valve support assemblies are clamped and locked on the T-shaped clamp mounting plate 39 through the T-shaped sliding block 35 and the fastening nut 36, and then a workpiece 40 to be machined is placed on the support claw 34;
then, the air pressure sensing piston 10 is pulled to a tee pipe blind port 14 through a rigid limiting slide rod 12, a straight port 13 of the tee pipe is communicated with a top port 15 of the tee pipe, and a driving valve rod 21 is rotationally driven to an arc valve clack 22 to seal an angle of a suction cup joint 27;
then starting an external vacuum pump, vacuumizing the vacuum bottle 9 through a vacuum air pipe 23, loosening the rigid limiting slide rod 12 after the vacuum degree is proper, rebounding the air pressure sensing piston 10 under the action of vacuum against the elastic force of the tension spring 11, and enabling the piston air vent 17 not to coincide with the top opening 15 of the three-way pipe, so that the top opening 15 of the three-way pipe and the vacuum bottle 9 are isolated into an independent space with a certain vacuum degree by the air pressure sensing piston 10;
then, the valve rod 21 is driven to rotate until the arc valve clack 22 is located at the compensation mechanism joint 28, because the arc valve clack 22 cannot plug the compensation mechanism joint 28, the air pipe joint 26, the suction cup joint 27 and the compensation mechanism joint 28 are all communicated, air is continuously pumped by an external vacuum pump at the moment, the air pressure in the vacuum suction cup 25 is continuously reduced, meanwhile, the air pressure sensing piston 10 slowly overcomes the pulling force of the vacuum countermeasure tension spring 11 to slide, but because the length of the air pressure sensing piston 10 is long, the sealing state of the vacuum bottle 9 can be always kept, before the vacuum degree of the vacuum suction cup 25 reaches a certain value, the rigid limit slide rod 12 needs to be manually jacked, the air pressure sensing piston 10 is prevented from retracting along with the vacuum countermeasure tension spring 11, and the condition that the vacuum bottle 9 is communicated with the outside is avoided;
when the suction force generated by the vacuum degree of the vacuum chuck 25 is enough to fix the workpiece 40 to be processed, the valve rod 21 is rotationally driven to enable the arc valve clack 22 to plug the air pipe joint 26, and at the moment, the three-way valve body 20 and the external channel are plugged, so that the vacuum air pipe 23 can be removed;
in the processing process, if the situation of slow air leakage caused by low roughness of the workpiece 40 to be processed and poor adhesion degree of the vacuum chuck 25 occurs, the air pressure in the vacuum chuck 25 can be increased, and the air pressure induction piston 10 slowly slides towards the tee pipe blind opening 14 under the action of the vacuum resisting the pulling force of the tension spring 11 when the air pressure in the vacuum chuck 25 is increased;
when the suction force of the vacuum chuck 25 is reduced to a certain value, the piston air hole 17 and the top port 15 of the three-way pipe are overlapped, once the piston air hole 17 and the top port 15 of the three-way pipe are partially overlapped, air in the vacuum chuck 25 can slowly enter the vacuum bottle 9, so that the air pressure in the vacuum chuck 25 is reduced, and the adsorption force is improved;
when the air pressure in the vacuum chuck 25 decreases, the air pressure sensing piston 10 stops or slides in the reverse direction, and the air pressure in the vacuum chuck 25 is compensated in the negative feedback adjustment.
The above is the overall working process of the invention, and the steps are repeated when the device is used next time.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a large-scale lathe work piece clamping mechanism of modularization combination formula which characterized in that: the three-way valve support assembly comprises a three-way valve support assembly (3) and a workpiece processing fixing assembly (4), wherein the three-way valve support assembly (3) is clamped in the workpiece processing fixing assembly (4), and a plurality of groups of three-way valve support assemblies (3) are arranged in an array; the method is characterized in that: the self-adaptive air pressure compensation device is characterized by further comprising a self-adaptive air pressure compensation mechanism (1) and a single-petal three-way control mechanism (2), wherein the single-petal three-way control mechanism (2) is arranged on the three-way valve supporting assembly (3), and the self-adaptive air pressure compensation mechanism (1) is arranged on one side of the single-petal three-way control mechanism (2); self-adaptation atmospheric pressure compensation mechanism (1) is including vacuum compensation storage subassembly (5) and vacuum feedback subassembly (6), one side of single lamella formula three-way control mechanism (2) is located in vacuum compensation storage subassembly (5) block, vacuum feedback subassembly (6) slide and locate in vacuum compensation storage subassembly (5).
2. A modular combined workpiece clamping mechanism for large-scale machine tools as claimed in claim 1, in which: the vacuum compensation storage assembly (5) comprises an air pressure compensation three-way pipe (7), a square sliding sleeve (8) and a vacuum bottle (9), wherein a three-way pipe straight port (13) is arranged at one end of the air pressure compensation three-way pipe (7), the air pressure compensation three-way pipe (7) is clamped and arranged on one side of the single-petal three-way control mechanism (2) through the three-way pipe straight port (13), a three-way pipe blind port (14) is arranged at the other end of the air pressure compensation three-way pipe (7), a three-way pipe top port (15) is further arranged on the air pressure compensation three-way pipe (7), the square sliding sleeve (8) is clamped and arranged in the three-way pipe blind port (14), and the vacuum bottle (9) is clamped and arranged in the three-way pipe top port (15).
3. The modular combined workpiece clamping mechanism for large-scale machine tools as claimed in claim 2, wherein: the vacuum feedback assembly (6) comprises an air pressure sensing piston (10), a vacuum counter tension spring (11) and a rigid limit sliding rod (12), the air pressure sensing piston (10) is clamped and slidably arranged in the air pressure compensation three-way pipe (7), the air pressure sensing piston (10) is in sliding sealing contact with the inner wall of the air pressure compensation three-way pipe (7), one end of the air pressure induction piston (10) is annularly and uniformly provided with a piston eave part (16), the air pressure induction piston (10) is provided with a piston air hole (17) on the upper edge of the piston eave part (16), the other end of the air pressure induction piston (10) is provided with a piston tail connecting groove (42), the vacuum counter tension spring (11) is arranged between the three-way pipe blind opening (14) and the air pressure sensing piston (10), the rigid limiting sliding rod (12) is in sliding contact with the square sliding sleeve (8), and the rigid limiting sliding rod (12) is fixedly connected into a piston tail connecting groove (42).
4. The modular combined workpiece clamping mechanism for large-scale machine tools as claimed in claim 3, wherein: single lamella formula three-way control mechanism (2) are including single lamella formula three way component (18) and adsorb supporting component (19), single lamella formula three way component (18) are located on three way valve supporting component (3), adsorb supporting component (19) and locate on single lamella formula three way component (18).
5. The modular combined workpiece clamping mechanism for large-scale machine tools as claimed in claim 4, wherein: the single-petal type three-way component (18) comprises a three-way valve body (20), a driving valve rod (21), an arc valve clack (22) and a vacuum air pipe (23), the three-way valve body (20) is arranged on a three-way valve supporting component (3), one end of the three-way valve body (20) is provided with an air pipe connector (26), the other end of the three-way valve body (20) is provided with a compensation mechanism connector (28), the top of the three-way valve body (20) is provided with a suction cup connector (27), the front end and the rear end of the three-way valve body (20) are symmetrically provided with a valve rod sealing hinging platform (29), the driving valve rod (21) is rotatably arranged in the valve rod sealing hinging platform (29), the driving valve rod (21) is provided with a valve rod handle (30), the driving valve rod (21) is provided with an indication arrow (31) on the valve rod handle (30), the arc valve clack (22) is provided with a flange installation shaft sleeve (32), arc valve clack (22) are located on driving valve rod (21) through flange mounting axle sleeve (32) block, arc valve clack (22) rotate locate tee bend valve body (20).
6. The modular combined workpiece clamping mechanism for large-scale machine tools as claimed in claim 5, wherein: the vacuum air pipe (23) is clamped in the air pipe joint (26), and the air pressure compensation three-way pipe (7) is clamped in the compensation mechanism joint (28) through the straight port (13) of the three-way pipe.
7. The modular combined workpiece clamping mechanism for large-scale machine tools as claimed in claim 6, wherein: the cambered surface width of arc valve clack (22) is greater than the diameter that trachea connects (26) and sucking disc connect (27), the cambered surface width of arc valve clack (22) is less than the diameter that compensation mechanism connects (28).
8. The modular combined workpiece clamping mechanism for large-scale machine tools as claimed in claim 7, wherein: adsorb supporting component (19) including supporting disk (24) and vacuum chuck (25), be equipped with installation lantern ring (33) on supporting disk (24), supporting disk (24) are located on sucking disc connects (27) through installation lantern ring (33) block, supporting disk (24) ring equipartition is equipped with support claw (34) on installation lantern ring (33), vacuum chuck (25) block is located in sucking disc connects (27).
9. The modular combined workpiece clamping mechanism for large-scale machine tools as claimed in claim 8, wherein: three-way valve supporting component (3) are including T shape slider (35) and fastening nut (36), T shape slider (35) slide locate work piece processing fixed subassembly (4) in, be equipped with slider screw rod (37) on T shape slider (35), fastening nut (36) and slider screw rod (37) threaded connection, the top of T shape slider (35) is equipped with arc disk seat (38), three-way valve body (20) rigid coupling is in arc disk seat (38).
10. The modular combined workpiece clamping mechanism for large-scale machine tools as claimed in claim 9, wherein: the fixed subassembly of work piece processing (4) includes T font anchor clamps mounting panel (39) and treats processing work piece (40), the array is equipped with down T shape spout (41) on T font anchor clamps mounting panel (39), during T shape spout (41) were located to T shape slider (35) block, treat that processing work piece (40) are located support claw (34), vacuum chuck (25) can adsorb and treat processing work piece (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210894408.2A CN114952359A (en) | 2022-07-28 | 2022-07-28 | Modular combined workpiece clamping mechanism for large machine tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210894408.2A CN114952359A (en) | 2022-07-28 | 2022-07-28 | Modular combined workpiece clamping mechanism for large machine tool |
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| CN114952359A true CN114952359A (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210894408.2A Pending CN114952359A (en) | 2022-07-28 | 2022-07-28 | Modular combined workpiece clamping mechanism for large machine tool |
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Application publication date: 20220830 |