CN116700374B - Positive and negative pressure and differential pressure transmission control system and device thereof - Google Patents
Positive and negative pressure and differential pressure transmission control system and device thereof Download PDFInfo
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- CN116700374B CN116700374B CN202310971485.8A CN202310971485A CN116700374B CN 116700374 B CN116700374 B CN 116700374B CN 202310971485 A CN202310971485 A CN 202310971485A CN 116700374 B CN116700374 B CN 116700374B
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- rod
- adjusting
- module
- gravity
- pressure
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- 230000005540 biological transmission Effects 0.000 title claims 12
- 230000005484 gravity Effects 0.000 claims 17
- 239000003921 oil Substances 0.000 claims 9
- 230000001502 supplementing effect Effects 0.000 claims 8
- 239000007788 liquid Substances 0.000 claims 6
- 238000009434 installation Methods 0.000 claims 3
- 230000001105 regulatory effect Effects 0.000 claims 3
- 230000002457 bidirectional effect Effects 0.000 claims 2
- 239000010720 hydraulic oil Substances 0.000 claims 1
Classifications
-
- 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
-
- 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
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/028—Controlling a pressure difference
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a positive and negative pressure and differential pressure transmission control system and a device thereof, wherein the positive and negative pressure and differential pressure transmission control system comprises a main control module, the main control module is electrically connected with an oil delivery module, the oil delivery module is connected with a hydraulic cylinder pushing module, the hydraulic cylinder pushing module is connected with a pressure adjusting module, the pressure adjusting module is provided with a gravity adjusting module and a friction adjusting module, the gravity adjusting module and the friction adjusting module are electrically connected with the main control module, the pressure adjusting module is used for adaptively adjusting according to the clamping force of a hydraulic chuck, the gravity adjusting module is used for switching gravity, and the friction adjusting module is used for adjusting according to the clamping force required by the hydraulic chuck. The positive and negative pressure and differential pressure transmission control system and the device thereof push a fixed stroke in the hydraulic cylinder, and can be suitable for clamping workpieces with different specifications and adjusting different clamping forces through the arrangement of the pressure adjusting module.
Description
Technical Field
The invention relates to the technical field of machine tool control systems, in particular to a positive and negative pressure and differential pressure transmission control system and a device thereof.
Background
In the use process of the numerical control machine tool, the use of the hydraulic control system is particularly wide, the hydraulic control system comprises actions required by automatic tool changing, running of machine tool moving parts, clamping and loosening of workpieces and the like, wherein the use of the hydraulic chuck aims at clamping and fixing the workpieces to be processed, the clamping and loosening of the workpieces are realized by utilizing positive and negative pressures through a hydraulic cylinder, meanwhile, the clamping and loosening of the workpieces with different specifications are realized by utilizing differential pressure, the fastening and subsequent processing of the workpieces are realized through different pressure transmission systems and devices, but the existing machine tool hydraulic transmission control system and the device have the following problems when in use:
the hydraulic chuck in the lathe is used, need carry out the clamp operation to the work piece of different specifications and material, but current lathe hydraulic pressure transmission control system and device, inconvenient oil pump realizes the adjustment to hydraulic pressure on the basis of carrying unified oil mass, at first, to the work piece of different specifications, hydraulic chuck's clamp range needs to be adjusted, need adjust hydraulic stem's propelling movement stroke, carry out and need carry out adaptability adjustment through adjusting oil pump's rotational speed or transfer time, and to the clamp of different material work piece, its clamp dynamics is also different, the operation of oil pump at this moment, also have inconvenience to the adjustment of hydraulic pressure, and then in the adjustment process to different work pieces, traditional lathe hydraulic pressure transmission control system and device, because the clamp dynamics and the clamp position demand of different work pieces are different, be confused easily simultaneously, need carry out comparatively complicated training when controlling in the programming, the requirement of professional skill of staff is higher, manual training and operation cost have been increased.
Aiming at the problems, innovative design is urgently needed on the basis of the original machine tool hydraulic transmission control system and the device thereof.
Disclosure of Invention
The invention aims to provide a positive and negative pressure and differential pressure transmission control system and a device thereof, which are used for solving the problem that the prior machine tool hydraulic transmission control system and the device thereof are provided in the background art, and the problem that an oil pump is inconvenient to realize hydraulic adjustment on the basis of delivering uniform oil quantity.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a positive negative pressure and differential pressure transmission control system and device thereof, includes main control module, main control module electrical signal connection has the oil transportation module, the oil transportation module is connected with pneumatic cylinder propelling movement module, pneumatic cylinder propelling movement module is connected with pressure adjustment module, pressure adjustment module is provided with gravity adjustment module and frictional force adjustment module, gravity adjustment module and frictional force adjustment module are connected with main control module electrical signal, pressure adjustment module is used for carrying out adaptive adjustment according to hydraulic chuck's clamping force, gravity adjustment module is used for switching gravity, frictional force adjustment module is used for adjusting according to the required clamping force of hydraulic chuck.
Preferably, the hydraulic cylinder comprises a hydraulic cylinder body, wherein the hydraulic cylinder body is connected with a bidirectional oil pump through an oil delivery pipe, and the bidirectional oil pump is connected with an oil tank through a pipe fitting;
the hydraulic cylinder comprises a hydraulic cylinder body, and is characterized by further comprising a first piston plate, wherein the first piston plate is arranged in the hydraulic cylinder body, the first piston plate is close to an oil delivery pipe, a connecting rod is fixed on one side of the first piston plate, a second piston plate is arranged in the hydraulic cylinder body through a first elastic telescopic rod, the second piston plate is arranged opposite to the first piston plate, a power rod is fixed on the outer side of the second piston plate, one end of the power rod is connected with a hydraulic chuck, a pressure regulating box is fixed on the top of the middle part of the hydraulic cylinder body, the bottom of the pressure regulating box is connected with the hydraulic cylinder body through a pipe fitting, a third piston plate is placed in the pressure regulating box, a mounting column is fixed on the top of the third piston plate, a gravity block is arranged on a limiting sliding sleeve on the mounting column, a contact assembly is arranged on the side of the gravity block, and the contact assembly is used for friction contact;
the gravity switching assembly is arranged on the top of the third piston plate and the gravity block and is used for switching the position of the contact assembly;
and the friction force adjusting assembly is arranged on the pressure adjusting box and is used for adjusting the friction force born by the contact assembly.
Preferably, the contact assembly comprises a second elastic telescopic rod, the second elastic telescopic rod is installed in the cavity of the side wall of the gravity block, the outer end of the second elastic telescopic rod is fixedly provided with a contact rod, and the outer end of the contact rod is fixedly provided with a contact plate.
Preferably, the gravity switching component comprises a locking rod, the locking rod is arranged at the top position of the gravity block side wall cavity through a spring embedded elastic movable mounting, the bottom of the locking rod is located in a locking groove, the locking groove is formed in the top of a contact rod, a pushing rod is arranged at the bottom edge of the inner end of the contact rod and fixed at the top of a third piston plate, a cross rod is connected to the top of the locking rod through a pull rope, the cross rod is arranged at the top of the gravity block in a limiting sliding manner, a magnetic plate is fixed at the inner end of the cross rod, a first electromagnet is arranged at the inner end of the magnetic plate, and the first electromagnet is fixed at the top of the gravity block.
Preferably, the bottom of the locking rod is designed into a right trapezoid structure, the inclined surface of the bottom of the locking rod is positioned on the inner side, and the bottom of the locking rod is in concave-convex fit with the locking groove.
Preferably, the push rod runs through and slides in the bottom cavity of the gravity block, the outer side of the top of the push rod is designed into an inclined plane structure, and the inclined plane of the top of the push rod is parallel to the inclined plane of the inner end of the contact rod.
Preferably, the friction force adjusting component comprises a mounting rod, the mounting rod is embedded and transversely slidably mounted in a side wall cavity of the pressure adjusting box, the bottom protruding position of the protruding portion of the mounting rod is connected with the side wall of the pressure adjusting box through a third elastic telescopic rod, an oil cavity is formed in the end portion of the mounting rod, an installation head is mounted in the oil cavity in an attached and slidably mounted mode, a friction plate is fixed at the inner end of the installation head, a fourth elastic telescopic rod is connected between the friction plate and the mounting rod, an adjusting rod is installed at the top of the pressure adjusting box in a penetrating mode, the bottom of the adjusting rod is located at the outer end of the mounting rod, a pressure sensor is fixed at the top of the pressure adjusting box and located below the protruding position of the top of the adjusting rod, and the wear supplementing component is mounted at the top of the mounting rod.
Preferably, the mounting rods are distributed at equal angles in the pressure regulating box, and friction plates at the inner ends of the mounting rods are distributed corresponding to the contact plates.
Preferably, the section of the adjusting rod is in an L-shaped structural design, the inner end of the bottom of the adjusting rod is in an inclined surface structure, and the inclined surface of the bottom of the adjusting rod is parallel to the inclined surface of the outer end of the mounting rod.
Preferably, the wear supplementing assembly comprises a supplementing liquid tank, the supplementing liquid tank is arranged at the top of the mounting rod through a pipe fitting and is connected with the oil cavity, a fourth piston plate is arranged in the supplementing liquid tank, a gravity column is placed on the fourth piston plate, a second electromagnet is fixed on the side wall of the supplementing liquid tank, and the second electromagnet is magnetically attracted with the supplementing liquid tank.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the hydraulic clamping device, the pressure regulating box is arranged at the top of the hydraulic cylinder body and is positioned between the first piston plate and the second piston plate, the bidirectional oil pump outputs a certain amount of oil, the second piston plate and the power rod are pushed to move, so that the hydraulic chuck clamps workpieces, at the moment, the power rod and the second piston plate cannot operate under the resistance of the workpieces, and further, excessive oil in the hydraulic cylinder body enters the pressure regulating box to push the third piston plate to move upwards, and the excessive oil is input into the pressure regulating box, so that the hydraulic cylinder body only needs to keep a constant conveying amount, and clamping operation of different workpieces can be realized;
2. according to the invention, the gravity block is arranged in the pressure regulating box, gravity is applied to oil entering the pressure regulating box, meanwhile, friction force and resistance are increased through contact of the contact rod and the friction plate, so that the pressure in the hydraulic cylinder body can be increased, the clamping force of the hydraulic chuck on a workpiece is kept, loosening does not occur, under the action of the gravity switching assembly, when the gravity block is moved up and then needs to be moved down to relax the workpiece, the separation of the contact rod and the friction plate can be realized through the gravity switching assembly, at the moment, the gravity block downwards presses the oil into the hydraulic cylinder body under the self gravity, and when the gravity block is moved down and reset, the contact rod and the contact plate are pushed by the push rod to reset, so that the recycling is realized;
3. according to the invention, the plurality of friction force adjusting components are arranged in the pressure adjusting box, and the friction plates with different numbers are in contact with the contact plates, so that the resistance force when the gravity block moves upwards can be adjusted, and further the adaptive adjustment can be carried out according to the clamping force of workpieces with different materials.
Drawings
FIG. 1 is a schematic diagram of a transmission control system of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the transmission control device of the present invention;
FIG. 3 is a schematic diagram of a cross-sectional structure of a pressure regulating box of a transmission control device of the present invention;
FIG. 4 is a schematic cross-sectional view of a friction force adjusting assembly of the transmission control device of the present invention;
FIG. 5 is a schematic diagram of the internal structure of a gravity block of the transmission control device of the present invention;
FIG. 6 is an enlarged schematic view of the transmission control device of the present invention at A in FIG. 5;
FIG. 7 is a schematic diagram of a gravity switching assembly of the transmission control device of the present invention;
FIG. 8 is a schematic diagram of a touch assembly of a transmission control device of the present invention.
In the figure: 1. a hydraulic cylinder; 2. an oil delivery pipe; 3. a bidirectional oil pump; 4. an oil tank; 5. a first piston plate; 6. a connecting rod; 7. a first elastic telescopic rod; 8. a second piston plate; 9. a power lever; 10. a pressure regulating tank; 11. a third piston plate; 12. a mounting column; 13. a gravity block; 14. a contact assembly; 141. a second elastic telescopic rod; 142. a contact lever; 143. a contact plate; 15. a gravity switching assembly; 151. a spring; 152. a locking lever; 153. a locking groove; 154. a push rod; 155. a pull rope; 156. a cross bar; 157. a magnetic plate; 158. a first electromagnet; 16. a friction force adjustment assembly; 161. a mounting rod; 162. a third elastic telescopic rod; 163. an oil cavity; 164. a mounting head; 165. a friction plate; 166. a fourth elastic telescopic rod; 167. an adjusting rod; 168. a pressure sensor; 169. a wear supplementing assembly; 1691. a replenishing liquid tank; 1692. a fourth piston plate; 1693. a gravity column; 1694. and a second electromagnet.
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. 1-8, the present invention provides a technical solution: a positive and negative pressure and differential pressure transmission control system and a device thereof, a hydraulic cylinder body 1, an oil delivery pipe 2, a bidirectional oil pump 3, an oil tank 4, a first piston plate 5, a connecting rod 6, a first elastic telescopic rod 7, a second piston plate 8, a power rod 9, a pressure regulating box 10, a third piston plate 11, a mounting column 12, a gravity block 13, a contact assembly 14, a second elastic telescopic rod 141, a contact rod 142, a contact plate 143, a gravity switching assembly 15, a spring 151, a locking rod 152, a locking groove 153, a push rod 154, a pull rope 155, a cross rod 156, a magnetic plate 157, a first electromagnet 158, a friction force regulating assembly 16, a mounting rod 161, a third elastic telescopic rod 162, an oil cavity 163, a mounting head 164, a friction plate 165, a fourth elastic telescopic rod 166, an adjusting rod 167, a pressure sensor 168, a wear supplementing assembly 169, a supplementing liquid box 1691, a fourth piston plate 1692, a gravity column 1693 and a second electromagnet 1694.
Referring to fig. 1, the hydraulic chuck clamping system comprises a main control module, wherein the main control module is electrically connected with an oil delivery module, the oil delivery module is connected with a hydraulic cylinder pushing module, the hydraulic cylinder pushing module is connected with a pressure adjusting module, the pressure adjusting module is provided with a gravity adjusting module and a friction adjusting module, the gravity adjusting module and the friction adjusting module are electrically connected with the main control module, the pressure adjusting module is used for adaptively adjusting according to the clamping force of the hydraulic chuck, the gravity adjusting module is used for switching gravity, the friction adjusting module is used for adjusting according to the clamping force required by the hydraulic chuck, and through the use of the hydraulic chuck clamping system, workpieces with different specifications and materials can be clamped when the oil delivery module conveys a constant oil quantity.
Referring to fig. 2-3 and fig. 5-8, the hydraulic cylinder 1 is provided with a hydraulic cylinder 1, the hydraulic cylinder 1 is connected with a bidirectional oil pump 3 through an oil delivery pipe 2, and the bidirectional oil pump 3 is connected with an oil tank 4 through a pipe fitting; the hydraulic cylinder comprises a hydraulic cylinder body 1, and is characterized by further comprising a first piston plate 5, wherein the first piston plate 5 is arranged in the hydraulic cylinder body 1, the first piston plate 5 is close to an oil delivery pipe 2, a connecting rod 6 is fixed on one side of the first piston plate 5, a second piston plate 8 is arranged in the hydraulic cylinder body 1 through a first elastic telescopic rod 7, the second piston plate 8 is arranged opposite to the first piston plate 5, a power rod 9 is fixed on the outer side of the second piston plate 8, one end of the power rod 9 is connected with a hydraulic chuck, a pressure regulating box 10 is fixed on the top of the middle part of the hydraulic cylinder body 1, the bottom of the pressure regulating box 10 is connected with the hydraulic cylinder body 1 through a pipe fitting, a third piston plate 11 is arranged in the pressure regulating box 10, a mounting column 12 is fixed on the top of the third piston plate 11, a gravity block 13 is sleeved on a limiting sliding sleeve on the mounting column 12, a contact assembly 14 is arranged on the side of the gravity block 13, and the contact assembly 14 is used for friction contact; a gravity switching assembly 15, the gravity switching assembly 15 being disposed on top of the third piston plate 11 and on the gravity block 13, and the gravity switching assembly 15 being used to switch the position of the contact assembly 14; the contact assembly 14 comprises a second elastic telescopic rod 141, the second elastic telescopic rod 141 is installed in the cavity of the side wall of the gravity block 13, the outer end of the second elastic telescopic rod 141 is fixedly provided with a contact rod 142, and the outer end of the contact rod 142 is fixedly provided with a contact plate 143; the gravity switching assembly 15 comprises a locking rod 152, the locking rod 152 is embedded and elastically movably installed at the top position of a cavity of the side wall of the gravity block 13 through a spring 151, the bottom of the locking rod 152 is positioned in a locking groove 153, the locking groove 153 is formed in the top of a contact rod 142, a pushing rod 154 is arranged at the bottom edge of the inner end of the contact rod 142, the pushing rod 154 is fixed at the top of a third piston plate 11, the top of the locking rod 152 is connected with a cross rod 156 through a pull rope 155, the cross rod 156 is installed at the top of the gravity block 13 in a limiting sliding manner, the inner end of the cross rod 156 is fixedly provided with a magnetic plate 157, the inner end of the magnetic plate 157 is provided with a first electromagnet 158, and the first electromagnet 158 is fixed at the top of the gravity block 13; the bottom of the locking rod 152 is designed into a right trapezoid structure, the inclined surface of the bottom of the locking rod 152 is positioned on the inner side, and the bottom of the locking rod 152 is in concave-convex fit with the locking groove 153; the pushing rod 154 slides through the bottom cavity of the gravity block 13, the outer side of the top of the pushing rod 154 is designed into an inclined surface structure, and the inclined surface of the top of the pushing rod 154 is parallel to the inclined surface of the inner end of the contact rod 142;
the gravity of the gravity block 13 is utilized to provide a pressure, so that on one hand, a movable space is provided for redundant oil, and on the other hand, the gravity switching assembly 15 is used, so that the pressure can be used and released, the automatic recycling is convenient, and the hydraulic clamping device is suitable for clamping workpieces with different specifications.
Referring to fig. 2-5, a friction force adjusting assembly 16 is shown, wherein the friction force adjusting assembly 16 is mounted on the pressure adjusting box 10, and the friction force adjusting assembly 16 is used for adjusting the friction force applied by the contact assembly 14; the friction force adjusting assembly 16 comprises a mounting rod 161, the mounting rod 161 is embedded and transversely and slidably mounted in a side wall cavity of the pressure adjusting box 10, the bottom protruding position of the protruding part of the mounting rod 161 is connected with the side wall of the pressure adjusting box 10 through a third elastic telescopic rod 162, an oil cavity 163 is formed at the end part of the mounting rod 161, a mounting head 164 is mounted in the oil cavity 163 in an adhering and sliding manner, a friction plate 165 is fixed at the inner end of the mounting head 164, a fourth elastic telescopic rod 166 is connected between the friction plate 165 and the mounting rod 161, an adjusting rod 167 is mounted at the top of the pressure adjusting box 10 in a penetrating manner, the bottom of the adjusting rod 167 is located at the outer end of the mounting rod 161, a pressure sensor 168 is fixed at the top of the pressure adjusting box 10 and located below the protruding position of the top of the adjusting rod 167, and a wear supplementing assembly 169 is mounted at the top of the mounting rod 161; the mounting rods 161 are equiangularly distributed in the pressure regulating box 10, and friction plates 165 at the inner ends of the mounting rods 161 are correspondingly distributed with the contact plates 143; the section of the adjusting lever 167 is in an L-shaped structural design, the inner end of the bottom of the adjusting lever 167 is in an inclined surface structure, and the inclined surface of the bottom of the adjusting lever 167 is parallel to the inclined surface of the outer end of the mounting lever 161; the wear supplementing assembly 169 comprises a supplementing liquid tank 1691, the supplementing liquid tank 1691 is arranged at the top of the mounting rod 161 through a pipe fitting, the supplementing liquid tank 1691 is connected with the oil cavity 163, a fourth piston plate 1692 is arranged in the supplementing liquid tank 1691, a gravity column 1693 is placed on the fourth piston plate 1692, a second electromagnet 1694 is fixed on the side wall of the supplementing liquid tank 1691, and the second electromagnet 1694 is magnetically attracted with the supplementing liquid tank 1691;
through the use of friction adjustment subassembly 16, can adjust according to the required clamping force of work piece material, utilize the mode of increasing or reducing friction, realize the adjustment of pressure, can utilize wearing and tearing supplementary subassembly 169 to supplement friction simultaneously, avoid producing wearing and tearing back influence friction and resistance's change.
Working principle: when the positive and negative pressure and the differential pressure transmission control system and the device thereof are used, as shown in fig. 1-8, firstly, when a workpiece is clamped by utilizing a hydraulic chuck, a bidirectional oil pump 3 is started by a background controller, oil in an oil tank 4 is conveyed into a hydraulic cylinder body 1 through an oil conveying pipe 2, the oil pushes a first piston plate 5 and a connecting rod 6 to move towards a second piston plate 8, at the moment, the oil in the middle part of the hydraulic cylinder body 1 is forced to push the second piston plate 8 to move, a first elastic telescopic rod 7 is forced to compress, a power rod 9 is driven to move by the second piston plate 8, then the clamping of the workpiece by the hydraulic chuck is realized by the power of the power rod 9, after the workpiece is clamped, the second piston plate 8 stops running, at the moment, the first piston plate 5 continues to move, the oil in the middle part of the hydraulic cylinder body 1 is extruded into a pressure regulating box 10 to drive a third piston plate 11 to move upwards, the third piston plate 11 drives the gravity block 13 to move upwards through the mounting column 12, provides a pressure through the gravity of the gravity block 13 and the friction resistance of the contact plate 143 and the friction plate 165, so that a workpiece in the hydraulic chuck cannot be loosened, starts the bidirectional oil pump 3 under the control of the background controller to pump oil at the right end of the hydraulic cylinder body 1 into the oil tank 4 when the workpiece is machined and needs to be taken out, resets the second piston plate 8 under the action of the first elastic telescopic rod 7 at the moment, so that the workpiece is not clamped any more, simultaneously controls the starting of the first electromagnet 158, adsorbs the magnetic plate 157 through the first electromagnet 158, pulls the locking rod 152 to move upwards through the cross rod 156 and the pull rope 155, so that the locking rod 152 is separated from the locking groove 153, the position of the contact rod 142 is released at the moment, under the action of the elastic tension of the second elastic telescopic rod 141, the contact rod 142 drives the contact plate 143 to reset, so that the contact plate 143 is separated from the friction plate 165, at the moment, the gravity block 13 drives the third piston plate 11 and the mounting column 12 to move downwards under the self gravity to reset, oil in the pressure regulating box 10 is extruded into the middle position of the hydraulic cylinder body 1 again, next pressurizing operation is facilitated, further, the first electromagnet 158 is powered off, the suction force on the magnetic plate 157 is lost, after the gravity block 13 moves downwards, the push rod 154 contacts with the contact rod 142, the contact rod 142 is pushed out, the locking rod 152 is clamped into the locking groove 153 again under the action of the spring 151, the positions of the contact rod 142 and the contact plate 143 are fixed, so that the contact plate 143 is attached to the friction plate 165 again, in the process, according to the specification of a workpiece, reactive forces with different distances can be provided, further, the gravity block 13 can be lifted by different distances, pressure can be increased, and clamping force can be maintained;
when workpieces of different materials are clamped, the pressure in the pressure regulating box 10 is required to be regulated, the workpieces are prevented from being damaged due to overlarge pressure, meanwhile, the clamping loosening caused by small pressure is avoided, at the moment, the friction force regulating assembly 16 which is set in advance is used, according to the materials of the workpieces, the corresponding number of the regulating rods 167 are manually pressed down according to the materials of the workpieces, the corresponding mounting rods 161 are pushed to move towards the gravity block 13 by the regulating rods 167, the mounting rods 161 drive the mounting heads 164 and the friction plates 165 to move through the hydraulic pressure in the oil cavity 163, the friction plates 165 are contacted with the corresponding contact plates 143, the friction force is regulated by arranging the corresponding number of the friction plates 165 to be contacted with the contact plates 143, and then the pressure in the pressure regulating box 10 can be regulated, and at the same time, when the adjusting rod 167 moves downwards, the pressure sensor 168 is pressed to transmit a signal to the background controller, so that the background controller receives the signal and starts to control the second electromagnet 1694 in the abrasion supplementing assembly 169 on the corresponding mounting rod 161, and then after the contact plate 143 moves downwards and resets, the second electromagnet 1694 is controlled to be powered off, at this time, the gravity column 1693 loses magnetic attraction, pressure can be applied to oil at the bottom of the fourth piston plate 1692 under the action of gravity, when the friction plate 165 is abraded, the gravity column 1693 and the fourth piston plate 1692 move downwards in space, oil is extruded into the oil cavity 163, and the mounting head 164 and the friction plate 165 are pushed to move inwards, so that the friction plate 165 can still be attached to the contact plate 143 when abrasion occurs, and stable friction force and resistance are provided.
What has not been described in detail in this specification is prior art that is well known to those skilled in the art, and in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
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 (9)
1. The positive and negative pressure and differential pressure transmission control device is controlled by a positive and negative pressure and differential pressure transmission control system and is characterized by comprising a main control module, wherein the main control module is electrically connected with an oil delivery module, the oil delivery module is connected with a hydraulic cylinder pushing module, the hydraulic cylinder pushing module is connected with a pressure adjusting module, the pressure adjusting module is provided with a gravity adjusting module and a friction adjusting module, the gravity adjusting module and the friction adjusting module are electrically connected with the main control module, the pressure adjusting module is used for adaptively adjusting according to the clamping force of a hydraulic chuck, the gravity adjusting module is used for switching gravity, the friction adjusting module is used for adjusting according to the clamping force required by the hydraulic chuck, the positive and negative pressure and differential pressure transmission control device comprises a hydraulic cylinder body (1), the hydraulic cylinder body (1) is connected with a bidirectional oil pump (3) through a pipe (2), and the bidirectional oil pump (3) is connected with an oil tank (4) through a pipe fitting;
the hydraulic oil cylinder comprises a hydraulic cylinder body (1), and is characterized by further comprising a first piston plate (5), wherein the first piston plate (5) is installed in the hydraulic cylinder body (1), the first piston plate (5) is close to an oil delivery pipe (2), a connecting rod (6) is fixed on one side of the first piston plate (5), a second piston plate (8) is installed in the hydraulic cylinder body (1) through a first elastic telescopic rod (7), the second piston plate (8) is oppositely arranged with the first piston plate (5), a power rod (9) is fixed on the outer side of the second piston plate (8), one end of the power rod (9) is connected with a hydraulic chuck, a pressure regulating box (10) is fixed on the top of the middle part of the hydraulic cylinder body (1), a third piston plate (11) is placed in the pressure regulating box (10), a mounting column (12) is fixed on the top of the third piston plate (11), a gravity block (13) is arranged on the mounting column (12) in a limiting sliding manner, and a side edge of the gravity block (13) is provided with a contact component (14) for contacting the friction component (14);
a gravity switching assembly (15), wherein the gravity switching assembly (15) is arranged on the top of the third piston plate (11) and the gravity block (13), and the gravity switching assembly (15) is used for switching the position of the contact assembly (14);
and the friction force adjusting assembly (16) is arranged on the pressure adjusting box (10), and the friction force adjusting assembly (16) is used for adjusting the friction force born by the contact assembly (14).
2. The positive and negative pressure and differential pressure transmission control device of claim 1, wherein: the contact assembly (14) comprises a second elastic telescopic rod (141), the second elastic telescopic rod (141) is installed in a cavity of the side wall of the gravity block (13), the outer end of the second elastic telescopic rod (141) is fixedly provided with a contact rod (142), and the outer end of the contact rod (142) is fixedly provided with a contact plate (143).
3. The positive and negative pressure and differential pressure transmission control device of claim 1, wherein: the gravity switching assembly (15) comprises a locking rod (152), the locking rod (152) is arranged at the top position of a side wall cavity of the gravity block (13) in an embedded elastic movable mode through a spring (151), the bottom of the locking rod (152) is located in a locking groove (153), the locking groove (153) is formed in the top of a contact rod (142), a pushing rod (154) is arranged at the bottom edge of the inner end of the contact rod (142), the pushing rod (154) is fixed at the top of a third piston plate (11), the top of the locking rod (152) is connected with a cross rod (156) through a pull rope (155), the cross rod (156) is arranged at the top of the gravity block (13) in a limiting sliding mode, a magnetic plate (157) is fixed at the inner end of the cross rod (156), a first electromagnet (158) is arranged at the inner end of the magnetic plate (157), and the first electromagnet (158) is fixed at the top of the gravity block (13).
4. The positive and negative pressure and differential pressure transmission control device according to claim 3, characterized in that: the bottom of the locking rod (152) is designed into a right trapezoid structure, the inclined surface of the bottom of the locking rod (152) is positioned on the inner side, and the bottom of the locking rod (152) is matched with the locking groove (153) in a concave-convex mode.
5. The positive and negative pressure and differential pressure transmission control device according to claim 3, characterized in that: the pushing rod (154) penetrates through the bottom cavity of the gravity block (13) to slide, the outer side of the top of the pushing rod (154) is designed to be of an inclined surface structure, and the inclined surface of the top of the pushing rod (154) is parallel to the inclined surface of the inner end of the contact rod (142).
6. The positive and negative pressure and differential pressure transmission control device of claim 1, wherein: the friction force adjusting assembly (16) comprises a mounting rod (161), the mounting rod (161) is embedded and transversely slidably mounted in a side wall cavity of the pressure adjusting box (10), the bottom protruding position of an extending part of the mounting rod (161) is connected with the side wall of the pressure adjusting box (10) through a third elastic telescopic rod (162), an oil cavity (163) is formed in the end portion of the mounting rod (161), an installation head (164) is mounted in the oil cavity (163) in an attached and slidably mounted mode, a friction plate (165) is fixed to the inner end of the installation head (164), a fourth elastic telescopic rod (166) is connected between the friction plate (165) and the mounting rod (161), an adjusting rod (167) is mounted through the top of the pressure adjusting box (10), the bottom of the adjusting rod (167) is located at the outer end of the mounting rod (161), a pressure sensor (168) is fixed to the top of the pressure adjusting box (10), the pressure sensor (168) is located below the protruding position of the top of the adjusting rod (167), and a wear supplementing assembly (169) is mounted on the top of the mounting rod (161).
7. The positive and negative pressure and differential pressure transmission control device of claim 6, wherein: the mounting rods (161) are distributed at equal angles in the pressure regulating box (10), and friction plates (165) at the inner ends of the mounting rods (161) are distributed corresponding to the contact plates (143).
8. The positive and negative pressure and differential pressure transmission control device of claim 6, wherein: the section of the adjusting rod (167) is of an L-shaped structural design, the inner end of the bottom of the adjusting rod (167) is of an inclined surface structure, and the inclined surface of the bottom of the adjusting rod (167) is parallel to the inclined surface of the outer end of the mounting rod (161).
9. The positive and negative pressure and differential pressure transmission control device of claim 6, wherein: the wear supplementing assembly (169) comprises a supplementing liquid tank (1691), the supplementing liquid tank (1691) is installed at the top of the installation rod (161) through a pipe fitting, the supplementing liquid tank (1691) is connected with the oil cavity (163), a fourth piston plate (1692) is installed in the supplementing liquid tank (1691), a gravity column (1693) is placed on the fourth piston plate (1692), a second electromagnet (1694) is fixed on the side wall of the supplementing liquid tank (1691), and the second electromagnet (1694) is magnetically attracted with the supplementing liquid tank (1691).
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| CN117428321B (en) * | 2023-12-20 | 2024-02-27 | 汉德劳(常州)自动化科技有限公司 | Gantry type friction welding equipment |
| CN118108327B (en) * | 2024-04-09 | 2024-09-17 | 中核海瑞格科技有限公司 | Wet oxidation treatment device and method thereof |
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