CN110227834B - Double-group spiral self-centering hydraulic chuck with built-in oil cylinder and hydraulic station - Google Patents
Double-group spiral self-centering hydraulic chuck with built-in oil cylinder and hydraulic station Download PDFInfo
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- CN110227834B CN110227834B CN201910637831.2A CN201910637831A CN110227834B CN 110227834 B CN110227834 B CN 110227834B CN 201910637831 A CN201910637831 A CN 201910637831A CN 110227834 B CN110227834 B CN 110227834B
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- chuck
- outer circle
- inner circle
- clamping jaw
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- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000000712 assembly Effects 0.000 claims abstract description 13
- 238000000429 assembly Methods 0.000 claims abstract description 13
- 239000003921 oil Substances 0.000 claims description 50
- 210000000078 claw Anatomy 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 22
- 229910052799 carbon Inorganic materials 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 21
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 229920001342 Bakelite® Polymers 0.000 claims description 6
- 239000004637 bakelite Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
- B23B31/302—Hydraulic equipment, e.g. pistons, valves, rotary joints
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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
Abstract
The invention relates to the technical field of chuck devices, in particular to a double-group spiral self-centering hydraulic chuck with an oil cylinder and a hydraulic station. The chuck comprises a chuck body, wherein two jaw groups are arranged on the chuck body, and each jaw group comprises 1-4 jaw assemblies capable of radially moving on the surface of the chuck body and a jaw driving mechanism which is assembled in an inner cavity at the bottom of the chuck body and used for driving each jaw assembly in the same group to radially move. The invention has small axial dimension, large movable stroke of the clamping jaw and large clamping force of the clamping jaw, is suitable for being used as a large-size chuck, has the minimum diameter of 0.8 m and the maximum diameter of more than 6 m, removes a back-pull type oil cylinder, solves the problem of machine tool installation, can clamp the inner circle or the outer circle of the same workpiece, assists a machine tool to process the outer circle or the inner circle of the workpiece, can clamp two workpieces simultaneously, assists the machine tool to process the two workpieces simultaneously, and has high processing precision and high working efficiency.
Description
Technical Field
The invention relates to the technical field of chuck devices, in particular to a double-group spiral self-centering hydraulic chuck with an oil cylinder and a hydraulic station.
Background
Currently, hydraulic chucks are mainly divided into two types: 1. the front hydraulic chuck, that is, the chuck and the rotary cylinder are integrated, and the oil pipe is connected from the front end, so that the size of the chuck is very small due to the restriction of structural design; 2. the back-pulling type hydraulic chuck, namely the chuck is arranged at the front end of a machine tool spindle, the rotary hydraulic cylinder is arranged at the rear end of the machine tool spindle, the oil cylinder is pulled back to drive the wedge-shaped structural member to move back, and the wedge-shaped structural member drives the sliding block to move towards the axis, so that the movable stroke is small and is not suitable for being used as a large-size chuck due to the restriction of structural design, and the movable stroke is generally within 10 inches. In addition, there is electric chuck, for the rotation of rear-mounted motor drive slider to center motion.
The rear faces of the chuck structures are required to have enough installation space, if the main shaft of the vertical lathe is solid, the main shaft of the large vertical lathe cannot be installed, and even if the main shaft of the large vertical lathe is of a hollow structure, a trench is required to be dug during installation, an installer needs to install the rear-mounted oil cylinder below a machine tool through the trench, so that time and labor are wasted, the later maintenance cost is high, and if the bench drill is provided with the chucks above a table top, the working stroke of the machine tool is greatly reduced.
In addition, in the actual work of a machine tool, a large sliding block stroke is needed when a large workpiece is clamped, an ultra-large clamping force is needed, the stroke of a general back-pull oil cylinder of a chuck with a traditional wedge structure is equal to the sliding block stroke, if the sliding block stroke or the clamping force is increased on the premise of not increasing the pressure of a hydraulic station, the axial dimension of the chuck can only be increased, calculated by the stroke of 20 mm of the sliding block, if the clamping force is increased by 10 times, the axial dimension of the chuck is increased by 200 mm, so that the chuck is too thick, and the machining stroke of the machine tool is reduced.
Disclosure of Invention
The invention aims to provide a double-group spiral self-centering hydraulic chuck with an oil cylinder and a hydraulic station arranged in order to solve the technical problems.
In order to solve the problems, the invention adopts the following technical scheme:
the utility model provides a built-in double helix formula self-centering hydraulic chuck of hydro-cylinder and hydraulic pressure station, includes chuck main part, its characterized in that: the chuck body is provided with two jaw groups, and each jaw group comprises 1-4 jaw assemblies capable of radially moving on the surface of the chuck body and a jaw driving mechanism which is assembled in an inner cavity at the bottom of the chuck body and used for driving each jaw assembly in the same group to radially move.
Further, the top surface of the chuck main body is provided with two slide ways corresponding to the two groups of clamping jaw groups, the first slide way group comprises 1-4 radial first slide ways, the second slide way group comprises 1-4 second slide ways, and the first slide ways and the second slide ways are identical in number and are distributed on the surface of the chuck main body at intervals.
Still further, the two jaw groups include an inner circular clamping jaw group and an outer circular clamping jaw group; the inner circle clamping jaw set comprises 1-4 inner circle clamping jaw assemblies and an inner circle jaw driving mechanism; the outer circle clamping jaw set comprises 1-4 outer circle clamping jaw assemblies and an outer circle jaw driving mechanism.
Still further, the outer circle clamping jaw assembly comprises an outer circle sliding block clamped in the first slideway, an outer circle clamping jaw seat fixed on the outer circle sliding block and an outer circle clamping jaw fixed on the outer circle clamping jaw seat; the middle part of each first slideway is provided with a radial outer circle claw travel hole, and the bottom of each outer circle sliding block is provided with 2 outer circle transmission shafts which are radially distributed; the two outer circle transmission shafts of each outer circle sliding block downwards penetrate through the travel holes of the corresponding first slide ways; the outer circle claw driving mechanism comprises an annular outer rotating disc and at least one group of integrated outer circle driving oil cylinders, the outer circle rotating disc is positioned in the bottom inner cavity of the chuck main body, and a plurality of rotating disc pressing plates are uniformly arranged at the joint part of the outer circumference of the outer circle rotating disc and the chuck main body; 1-4 arc-shaped outer circle convex blocks are uniformly arranged on the disc surface of the outer circle rotary disc, and the outer circle convex blocks are clamped between 2 outer circle transmission shafts of each outer circle sliding block in a one-to-one correspondence manner; the integrated excircle driving oil cylinder comprises an excircle oil cylinder and an excircle miniature hydraulic station for supplying oil to the excircle oil cylinder; the excircle miniature hydraulic station consists of an excircle electric motor, an excircle hydraulic oil tank and an excircle gear pump; the tail end of the cylinder body of the excircle cylinder is hinged on the chuck main body, and the top end of the piston rod is hinged on the disk surface of the excircle rotating disk
Still further, the inner circle clamping jaw assembly comprises an inner circle sliding block clamped in the second slideway, an inner circle clamping jaw seat fixed on the inner circle sliding block and an inner circle clamping jaw fixed on the inner circle clamping jaw seat; the middle part of each second slideway is provided with radial inner circle claw travel holes, and the bottom of each inner circle sliding block is provided with 2 inner circle transmission shafts which are radially distributed; the two inner circle transmission shafts of each inner circle sliding block downwards penetrate through the travel holes of the corresponding second slide way; the inner circle claw driving mechanism comprises a round inner circle rotary disc and at least one group of integrated inner circle driving oil cylinders, and the inner circle rotary disc is positioned in a central hole of the outer circle rotary disc and is assembled on a central shaft of the chuck main body; 1-4 arc-shaped inner circular protruding blocks are uniformly arranged on the disc surface of the inner circular rotating disc and are correspondingly clamped between 2 inner circular transmission shafts of each inner circular sliding block one by one; the inner circle micro hydraulic station consists of an inner circle electric motor, an inner circle hydraulic oil tank and an inner circle gear pump; the tail end of the cylinder body of the inner circular cylinder is hinged on the chuck main body, and the top end of the piston rod is hinged on the disk surface of the inner circular rotating disk.
Still further, an annular groove is arranged on the outer wall of the chuck main body, an annular bakelite seat is clamped in the annular groove, and two annular wires are fixed on the bakelite seat; a carbon brush support is arranged on the outer side of the chuck main body, two carbon brushes are fixed on the carbon brush support, and the two carbon brushes are respectively contacted with the annular wire; an annular carbon brush shield is fixed on the outer wall of the chuck main body; the positive and negative terminal posts of the outer circle electric motor and the inner circle electric motor are respectively and electrically connected with the two annular wires.
Still further, install in the chuck main part and be used for monitoring the pressure of excircle centre gripping jack catch group and according to the excircle digital display control table of the work of pressure value control excircle electric motor and be used for monitoring the pressure of interior circle centre gripping jack catch group and according to the interior circle digital display control table of the work of pressure value control interior circle electric motor.
Furthermore, a wireless IO module, an outer circle reversing relay set and an inner circle reversing relay set are arranged in the chuck main body.
The beneficial effects are that: compared with the prior art, the hydraulic chuck is designed with two groups of claw assemblies and two groups of integrated driving oil cylinders which are internally arranged in the inner cavity at the bottom of the chuck main body, direct current 12-48V low-voltage power supply is adopted, potential safety hazards are avoided, a power supply is connected into electric motors of the two groups of integrated driving oil cylinders in the chuck main body through a carbon brush frame, a carbon brush and an annular wire, the electric motors change the oil supply direction through positive-negative electrode conversion of the direct current power supply, the corresponding oil cylinders are respectively controlled to work, the two groups of oil cylinders respectively drive the two rotating discs to rotate in the positive-negative direction, and then the corresponding sliding blocks are driven to radially move, so that the two groups of claws clamp or release workpieces. Due to the adoption of the structure and the principle, the chuck is small in axial size, large in jaw moving stroke and large in jaw clamping force, is suitable for being used as a large-size chuck, is 0.8 m in diameter at the minimum, can be more than 6 m at the maximum, and eliminates a back-pull type oil cylinder, so that the problem of machine tool installation is solved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a side view of an embodiment of the present invention;
FIG. 3 is a schematic view of the inner circle clamping jaw set of the present invention clamping an inner circle of a workpiece;
FIG. 4 is a schematic diagram of the outer circle clamping jaw set for clamping the outer circle of a workpiece;
fig. 5 is a schematic diagram of the circuit control of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
Examples:
referring to fig. 1-2, the double-set spiral self-centering hydraulic chuck with built-in oil cylinders and hydraulic stations in the present embodiment comprises a chuck main body 1, wherein two jaw sets are installed on the chuck main body 1, and each jaw set comprises 3 jaw assemblies capable of radially moving on the surface of the chuck main body 1 and a jaw driving mechanism assembled in an inner cavity at the bottom of the chuck main body 1 and used for driving each jaw assembly in the same set to radially move.
The top surface of chuck main part 1 is provided with two slide groups corresponding with two groups jack catch groups, and first slide group includes 3 radial first slides, second slide group includes 3 second slides, first slide and second slide interval are arranged at the surface of chuck main part 1.
The two claw groups comprise an inner circular clamping claw group and an outer circular clamping claw group.
The outer circle clamping jaw set includes 3 outer circle clamping jaw assemblies and drives the outer circle clamping jaw actuating mechanism of the total radial motion of 3 outer circle clamping jaws, specifically:
the outer circle clamping jaw assembly comprises an outer circle sliding block 4 clamped in the first slideway, an outer circle clamping jaw seat 42 fixed on the outer circle sliding block 4 and an outer circle clamping jaw 43 fixed on the outer circle clamping jaw seat 42; the middle part of each first slideway is provided with a radial outer circle claw travel hole, and the bottom of each outer circle sliding block 4 is provided with 2 outer circle transmission shafts 41 which are radially distributed; the two outer circle transmission shafts 41 of each outer circle sliding block 4 penetrate downwards through the travel holes of the corresponding first slide way.
The outer circle claw driving mechanism comprises an annular outer rotation disc 3 and at least one group of integrated outer circle driving oil cylinders, the outer circle rotation disc 3 is positioned in the bottom inner cavity of the chuck main body 1, and a plurality of rotation disc pressing plates 32 are uniformly arranged at the joint part of the outer circumference of the outer circle rotation disc 3 and the chuck main body 1; the disc surface of the outer circle rotating disc 3 is uniformly provided with 1-4 arc-shaped outer circle convex blocks 31, and the outer circle convex blocks 31 are clamped between 2 outer circle transmission shafts 41 of each outer circle sliding block 4 in a one-to-one correspondence mode. The integrated excircle driving oil cylinder comprises an excircle oil cylinder 71 and an excircle miniature hydraulic station for supplying oil to the excircle oil cylinder 71; the excircle micro hydraulic station is composed of an excircle electric motor 73, an excircle hydraulic oil tank 72 and an excircle gear pump 74; the tail end of the cylinder body of the excircle cylinder 71 is hinged on the chuck main body 1, and the top end of the piston rod is hinged on the disc surface of the excircle rotary disc 3.
The inner circle clamping jaw set comprises 3 inner circle clamping jaw assemblies and an inner circle clamping jaw driving mechanism for driving the 3 inner circle clamping jaw assemblies to radially move, and specifically:
the inner circle clamping jaw assembly comprises an inner circle sliding block 5 clamped in the second slide way, an inner circle clamping jaw seat 52 fixed on the inner circular sliding block 5 and an inner circle clamping jaw 53 fixed on the inner circle clamping jaw seat 52; the middle part of each second slideway is provided with radial inner circle claw travel holes, and the bottom of each inner circle sliding block 5 is provided with 2 inner circle transmission shafts 51 which are radially distributed; the two inner circle transmission shafts 51 of each inner circle sliding block 5 downwards penetrate through the travel holes of the corresponding second slide way;
the inner circular claw driving mechanism comprises a circular inner circular rotary disc 2 and at least one group of integrated inner circular driving oil cylinders, wherein the inner circular rotary disc 2 is positioned in a central hole of the outer circular rotary disc 3 and is assembled on a central shaft 6 of the chuck main body 1; 1-4 arc-shaped inner circular protruding blocks 21 are uniformly arranged on the disc surface of the inner circular rotary disc, and the inner circular protruding blocks 21 are correspondingly clamped between 2 inner circular transmission shafts 51 of each inner circular sliding block 5 one by one; the inner circle micro hydraulic station is composed of an inner circle electric motor 83, an inner circle hydraulic oil tank 82 and an inner circle gear pump 84; the tail end of the cylinder body of the inner circular cylinder 81 is hinged on the chuck main body 1, and the top end of the piston rod is hinged on the disk surface of the inner circular rotating disk 2.
The integrated outer circle hydraulic cylinder and the integrated inner circle hydraulic cylinder adopted in the invention are sold in the market, and the specific structure and the working principle are not repeated here for the prior art.
An annular groove is formed in the outer wall of the chuck main body 1, an annular bakelite seat 95 is clamped in the annular groove, and two annular wires 93 are fixed on the bakelite seat 95; a carbon brush bracket 91 is arranged on the outer side of the chuck main body 1, two carbon brushes 92 are fixed on the carbon brush bracket 91, and the two carbon brushes 92 are respectively contacted with an annular lead 93; an annular carbon brush shield 94 is fixed on the outer wall of the chuck main body 1; the positive and negative terminals of the outer circular electric motor 73 and the inner circular electric motor 83 are electrically connected to two ring conductors 93, respectively.
The hydraulic chuck in this embodiment adopts direct current 12-48V low voltage power supply, has no potential safety hazard, fixes the carbon brush bracket 91 at the outer side of the chuck main body 1, ensures that the carbon brush bracket is fixed in position and cannot rotate along with the chuck main body 1, and simultaneously, ensures that the carbon brush 92 contacts the annular lead 93. The power supply is connected to the outer circular electric motor 73 and the inner circular electric motor 83 inside the chuck body 1 through the carbon brush bracket 91, the carbon brush 92 and the ring wire 93 electrode respectively.
When the inner circular surface and the end surface of the workpiece are required to be processed, the outer circular electric motor 73 changes the oil supply direction through the positive-negative electrode conversion of the direct-current power supply, the outer circular oil cylinder 71 is controlled to stretch, the outer circular oil cylinder 71 drives the outer circular rotating disk 3 to rotate in the positive direction and the reverse direction, the outer circular convex block 31 rotates along with the outer circular rotating disk 3 in the positive direction and the reverse direction, the outer circular sliding block 4 is driven to move radially through the outer circular transmission shaft 41, and then the outer circular clamping claw 43 clamps the outer circle of the workpiece (shown in fig. 4) or releases the workpiece.
When the outer circular surface and the end surface of the workpiece are required to be processed, the inner circular electric motor 83 changes the oil supply direction through the positive-negative electrode conversion of the direct-current power supply, controls the inner circular oil cylinder 81 to stretch, and the inner circular oil cylinder 81 drives the inner circular rotating disc 2 to rotate in the positive direction and the reverse direction, the inner circular convex block 81 rotates along with the inner circular rotating disc 2 in the positive direction and the reverse direction, and the inner circular sliding block 5 is driven to radially move through the inner circular transmission shaft 51, so that the inner circular clamping claw 53 clamps the inner circle of the workpiece (shown in fig. 3) or releases the workpiece.
When the inner circular surface, the outer circular surface and the end surface of the workpiece are required to be processed simultaneously, the outer circular clamping claw 43 can clamp the outer circle of the workpiece at first, and the auxiliary machine tool can cut the inner circular surface and the end surface of the workpiece; then, the inner circle of the workpiece is clamped by the inner circle clamping claw 53, the outer circle of the workpiece is loosened by the outer circle clamping claw 43, and the outer circle surface of the workpiece is cut by the auxiliary machine tool, so that one-time clamping can be realized, three-surface machining is finished, and the machining precision and efficiency are improved.
The hydraulic chuck of this embodiment also can be by interior circle centre gripping jack catch group and the interior circle, the excircle of the same work piece of excircle centre gripping jack catch group centre gripping simultaneously, the lathe is assisted in processing the work piece, can increase the clamping strength like this, can prevent the work piece deformation in order to prevent effectively through multiple spot centre gripping work piece again.
The hydraulic clamping jaw according to this embodiment may further clamp a workpiece by the inner circle clamping jaw set and the outer circle clamping jaw set, and the auxiliary machine tool may process two workpieces simultaneously, only by having the height of the inner circle clamping jaw 43 2 times (or the height of the outer circle clamping jaw 2 times) the height of the outer circle clamping jaw 53, the inner circle clamping jaw 43 clamps an inner circle (or an outer circle) of one workpiece, and the outer circle clamping jaw 53 clamps an outer circle (or an inner circle) of another workpiece. Therefore, two workpieces can be clamped at one time, and the working efficiency is improved.
The diameter of each cylinder is generally between phi 60 and 100 according to the different diameter sizes of the chuck body 1, and when the electric motor pressure is 7.1MP, the maximum thrust of the phi 60 cylinder is 8000N, the maximum thrust of the phi 100 cylinder is 24000N, and the stroke is 50 to 500 mm. When the stroke of the oil cylinder is 200 mm, the sliding block is moved by 20 mm through the rotating disc, the stroke of the oil cylinder is 10 times of the stroke of the sliding block, and 8000N times 10 times is equal to 80000N. The electric motor and the oil cylinder are horizontally arranged inside the chuck body 1, and 1-9 electric motors are installed according to the size of the chuck body 1 and the required clamping force. Compared with the traditional wedge-shaped rotating disc structure, when the stroke of the sliding block is increased by 5 times, the clamping force can still be increased by more than 10 times.
In the invention, an outer circle digital display control table 10A for monitoring the pressure of the outer circle clamping jaw group and controlling the outer circle electric motor 73 to work according to the pressure value and an inner circle digital display control table 10B for monitoring the pressure of the inner circle clamping jaw group and controlling the inner circle electric motor 83 to work according to the pressure value are arranged in the chuck main body 1. The two digital display control meters can display the pressure of the chuck, can respectively control the power supply of the two groups of electric motors to be connected or disconnected according to the set pressure, and can also change the clamping force of the chuck by adjusting the pressure so as to process different workpieces.
Each outer circle electric motor 73 and each outer circle oil cylinder 71 of the outer circle claw driving mechanism adopt a parallel structure, two oil way pressures are respectively controlled through two outer circle digital display control meters 10A, the outer circle electric motor 73 is only powered when in clamping and loosening actions, electric energy is saved, the outer circle electric motor 73 and hydraulic oil can be prevented from heating, abrasion of the outer circle electric motor 73 is reduced, the service life is prolonged, and no noise is generated. If the pressure is reduced in the processing process, the external circle digital display control meter 10A automatically switches on the power supply of the external circle electric motor 73, and the external circle electric motor 73 operates to supplement the pressure for the external circle oil cylinder 71.
Similarly, each inner circle electric motor 83 and each inner circle oil cylinder 81 of the inner circle claw driving mechanism adopt a parallel structure, two oil way pressures are respectively controlled through two inner circle digital display control meters 10B, the inner circle electric motor 83 only supplies power during clamping and loosening actions, electric energy is saved, the inner circle electric motor 83 and hydraulic oil can be prevented from heating, abrasion of the inner circle electric motor 83 is reduced, the service life is prolonged, and noise is avoided. If the pressure is reduced during the processing, the internal circle digital display control meter 10B will automatically switch on the power supply of the internal circle electric motor 83, and the internal circle electric motor 83 operates to supplement the pressure to the internal circle cylinder 81.
In addition, the chuck body 1 is further provided with a wireless IO module 11, an outer circle reversing relay set 12A and an inner circle reversing relay set 12B, and the outer circle reversing relay set 12A and the inner circle reversing relay set 12B are both composed of two relays. The circuit connection control principles of the outer circle electric motor 73, the inner circle electric motor 83, the two outer circle digital display control tables 10A, the two inner circle digital display control tables 10B, the wireless IO module, the reversing relay set A and the reversing relay set B are shown in fig. 5. In actual operation, the wireless IO module 11 receives a working instruction sent by the machine tool system through wireless transmission, and then controls the working states of the outer circle reversing relay set 12A and the inner circle reversing relay set 12B, so as to realize on/off and forward/reverse rotation of each outer circle electric motor 73 and/or each inner circle electric motor 83.
The technical content that is not described in detail in the present invention is known in the art.
The present invention is not limited to the above-described embodiments, and the above-described embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a built-in double helix formula self-centering hydraulic chuck of hydro-cylinder and hydraulic pressure station, includes chuck main part (1), its characterized in that: the chuck comprises a chuck main body (1), a chuck body (1) and a chuck, wherein the chuck main body (1) is provided with two jaw groups, and the two jaw groups respectively comprise 1-4 jaw assemblies capable of radially moving on the surface of the chuck main body (1) and jaw driving mechanisms which are assembled in an inner cavity at the bottom of the chuck main body (1) and used for driving the jaw assemblies in the same group to radially move;
the chuck comprises a chuck body (1), and is characterized in that the top surface of the chuck body (1) is provided with two slide ways corresponding to two groups of claw groups, the first slide way group comprises 1-4 radial first slide ways, the second slide way group comprises 1-4 second slide ways, and the first slide ways and the second slide ways are identical in number and are distributed on the surface of the chuck body (1) at intervals;
the two claw groups comprise an inner circular clamping claw group and an outer circular clamping claw group; the inner circle clamping jaw set comprises 1-4 inner circle clamping jaw assemblies and an inner circle jaw driving mechanism; the outer circle clamping jaw set comprises 1-4 outer circle clamping jaw assemblies and an outer circle jaw driving mechanism;
the outer circle clamping jaw assembly comprises an outer circle sliding block (4) clamped in the first slideway, an outer circle clamping jaw seat (42) fixed on the outer circle sliding block (4) and an outer circle clamping jaw (43) fixed on the outer circle clamping jaw seat (42); the middle part of each first slideway is provided with a radial outer circle claw travel hole, and the bottom of each outer circle sliding block (4) is provided with 2 outer circle transmission shafts (41) which are radially distributed; two outer circle transmission shafts (41) of each outer circle sliding block (4) downwards penetrate through the travel holes of the corresponding first slide ways;
the outer circle claw driving mechanism comprises an annular outer circle rotating disc (3) and at least one group of integrated outer circle driving oil cylinders, the outer circle rotating disc (3) is positioned in the bottom inner cavity of the chuck main body (1), and a plurality of rotating disc pressing plates (32) are uniformly arranged at the joint part of the outer circumference of the outer circle rotating disc (3) and the chuck main body (1); 1-4 arc-shaped outer circle convex blocks (31) are uniformly arranged on the disc surface of the outer circle rotary disc (3), and the outer circle convex blocks (31) are correspondingly clamped between 2 outer circle transmission shafts (41) of each outer circle sliding block (4) one by one; the integrated excircle driving oil cylinder comprises an excircle oil cylinder (71) and an excircle miniature hydraulic station for supplying oil to the excircle oil cylinder (71); the excircle micro hydraulic station consists of an excircle electric motor (73), an excircle hydraulic oil tank (72) and an excircle gear pump (74); the tail end of a cylinder body of the excircle cylinder (71) is hinged on the chuck main body (1), and the top end of a piston rod is hinged on the disc surface of the excircle rotary disc (3);
the inner circle clamping jaw assembly comprises an inner circle sliding block (5) clamped in the second slideway, an inner circle clamping jaw seat (52) fixed on the inner circular sliding block (5) and an inner circle clamping jaw (53) fixed on the inner circle clamping jaw seat (52); the middle part of each second slideway is provided with a radial inner circle claw travel hole, and the bottom of each inner circle sliding block (5) is provided with 2 inner circle transmission shafts (51) which are radially distributed; two inner circle transmission shafts (51) of each inner circle sliding block (5) downwards penetrate through the travel holes of the corresponding second slide way;
the inner circular claw driving mechanism comprises a circular inner circular rotary disc (2) and at least one group of integrated inner circular driving oil cylinders, wherein the inner circular rotary disc (2) is positioned in a central hole of the outer circular rotary disc (3) and is assembled on a central shaft (6) of the chuck main body (1); 1-4 arc-shaped inner circular protruding blocks (21) are uniformly arranged on the disc surface of the inner circular rotary disc, and the inner circular protruding blocks (21) are clamped between 2 inner circular transmission shafts (51) of each inner circular sliding block (5) in a one-to-one correspondence manner; the integrated inner circle driving oil cylinder comprises an inner circle oil cylinder (81) and an inner circle miniature hydraulic station for supplying oil to the inner circle oil cylinder (81); the inner circle micro hydraulic station consists of an inner circle electric motor (83), an inner circle hydraulic oil tank (82) and an inner circle gear pump (84); the tail end of the cylinder body of the inner circular cylinder (81) is hinged on the chuck main body (1), and the top end of the piston rod is hinged on the disc surface of the inner circular rotary disc (2).
2. The dual set screw self-centering hydraulic chuck built into a cylinder and hydraulic station of claim 1, wherein: an annular groove is formed in the outer wall of the chuck main body (1), an annular bakelite seat (95) is clamped in the annular groove, and two annular wires (93) are fixed on the bakelite seat (95); a carbon brush support (91) is arranged on the outer side of the chuck main body (1), two carbon brushes (92) are fixed on the carbon brush support (91), and the two carbon brushes (92) are respectively contacted with two annular wires (93); an annular carbon brush shield (94) is fixed on the outer wall of the chuck main body (1); the positive and negative terminal posts of the outer circle electric motor (73) and the inner circle electric motor (83) are respectively and electrically connected with two annular wires (93).
3. The dual set screw self-centering hydraulic chuck built into a cylinder and hydraulic station of claim 2, wherein: an outer circle digital display control table (10A) for monitoring the pressure of the outer circle clamping jaw group and controlling the outer circle electric motor (73) to work according to the pressure value and an inner circle digital display control table (10B) for monitoring the pressure of the inner circle clamping jaw group and controlling the inner circle electric motor (83) to work according to the pressure value are arranged in the chuck main body (1).
4. A dual set of screw self-centering hydraulic chucks built into a ram and hydraulic station according to claim 3, wherein: a wireless IO module (11), an outer circle reversing relay group (12A) and an inner circle reversing relay group (12B) are arranged in the chuck main body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910637831.2A CN110227834B (en) | 2019-07-15 | 2019-07-15 | Double-group spiral self-centering hydraulic chuck with built-in oil cylinder and hydraulic station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN112440134B (en) * | 2020-11-13 | 2022-05-27 | 北京新风航天装备有限公司 | Intelligent internal stay tool equipment of thin wall type |
| CN113523336B (en) * | 2021-09-09 | 2022-05-06 | 陕西跃大重型机械有限公司 | Intelligent manufacturing numerical control machine tool |
| KR102516396B1 (en) * | 2021-11-19 | 2023-04-03 | 주식회사 네오시스템 | Processing ring centreing jig apparatus |
| CN117066547A (en) * | 2022-03-21 | 2023-11-17 | 福建省威诺数控有限公司 | Self-centering clamping device and clamping method for numerical control turntable of high-precision annular workpiece |
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| CN110227834A (en) | 2019-09-13 |
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