Universal interchangeable vacuum clamp

Abstract

The utility model relates to a universal type interchangeable vacuum clamp which comprises a first rotating motor capable of driving a rotating conveying plate to carry out material conveying rotation on a working table of a machining center, and placing assemblies are annularly embedded in the rotating conveying plate at intervals. A groove cavity limited by the placement assembly is internally and detachably provided with an easy-to-disassemble interchange plate, and the interchange plate is further connected with a clamping assembly capable of limiting the aviation parts placed in an array; the bottom of the rotary conveying plate is further provided with a vacuum generating unit which adjustably provides negative pressure adsorption acting force for vacuum adsorption installation of the workpieces limited by the interchanging plate and the clamping assembly. According to the vacuum fixture main body module, the machining efficiency can be improved in a continuous feeding mode, meanwhile, the matching of the fixture and the workpiece can be realized by switching the workpiece placing plate bodies which are not fixedly connected, and the universality of the vacuum fixture main body module is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum clamp technical field especially relates to a general type interchange vacuum clamp. BACKGROUND

[0002] With the development of mechanical processing technology, the clamp becomes the indispensable component of mechanical processing, and the clamp is the device for fixing the workpiece in the machining manufacturing process, so that the workpiece occupies the correct position to accept processing or detection. The existing clamp interchange plate is usually installed on the clamp base of the machining center through the connecting structure member such as internal hexagonal screw, the clamp needs manual screw locking, the efficiency is low, and manual screw locking can easily cause uneven stress and lead to insufficient product machining precision, further easily cause the deformation of the clamp interchange plate and lead to the scrap of the clamp. Therefore, in order to improve the convenience and service life of the clamp, the vacuum adsorption positioning clamp becomes one of the commonly used fixing clamps.

[0003] When batch aviation parts are machined in the machining center such as laser processing table and machining lathe, the machining of different aviation parts can be carried out by preloading different driving programs, but the clamps used for different aviation parts are different, and the layout and batch clamping process of the clamp are limited by the structure and need to be frequently disassembled and assembled on the workbench, which affects the continuous machining efficiency. The existing vacuum adsorption clamp is directly fixed on the workbench of the machining center, when the workpiece is disassembled and replaced, the clamp needs to be disassembled or released after shutdown, and then the workpiece can be replaced, the clamp cannot be quickly replaced, the overall disassembly and assembly time and shutdown interval period are long, the total machining time is greatly prolonged, and the working efficiency is reduced. In addition, during batch machining, a plurality of aviation parts are usually clamped on a single clamp, so that the machining center can complete the machining of multiple parts at one time, but the time consumed for shutdown and disassembly is further prolonged, quick clamping cannot be realized, the working efficiency is low, and the machining capacity is limited. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a general type interchange vacuum clamp which can improve the machining efficiency through continuous feeding, and improve the universality of the vacuum clamp main module by switching the non-fixedly connected workpiece placing plate body to realize the adaptation of the clamp and the workpiece, so as to solve the problems that the installation position of the existing vacuum clamp is fixed, the disassembly and replacement of the workpiece cannot be quickly and conveniently completed, a lot of time is consumed for the disassembly and replacement of the workpiece, the machining cycle is prolonged, the machining efficiency is reduced, and the existing vacuum clamp cannot be partially replaced and used for clamping and limiting different workpieces, and the vacuum clamp usually has the limitation of special tool, and part of the structure cannot be conveniently replaced and adapted to multiple workpieces.

[0005] The utility model discloses a technical scheme for: a general type exchange vacuum clamp, including the first rotation motor that can drive rotary conveying board is on the worktable of machining center and carries out the material rotation, the rotary conveying board is on the ring spacing and is embedded with the installation component, and the installation component is detachably installed with the easily dismantled exchange board in the slot cavity defined, still be connected with the clamping assembly that can be positioned to the array of aviation spare parts on the exchange board, still be provided with the vacuum generating unit that the vacuum adsorption installation of workpiece is limited to the adjustable exchange board and the clamping assembly on the bottom of rotary conveying board provides negative pressure adsorption force.

[0006] According to a preferred embodiment, the installation component includes a receiving groove, a pressing guide mechanism and an adjustable pressure release mechanism, wherein the receiving groove is embedded on the rotary conveying plate, and the groove bottom of the receiving groove is provided with a first groove hole accommodating the pressing guide mechanism, a second groove hole inserting the adjustable pressure release mechanism and a third groove hole capable of communicating with the vacuum generating unit, the first groove hole and the third groove hole are coaxially communicated and penetrate the groove bottom of the receiving groove, and the second groove hole communicates with the third groove hole in the form of penetrating the hole side wall of the third groove hole.

[0007] According to a preferred embodiment, the cross bracket of the pressing guide mechanism is installed horizontally in the first groove hole, a telescopic rod capable of lifting and descending in the first groove hole is supported on the cross bracket, a plugging table capable of plugging the opening of the first groove hole is connected to the axial upper end of the telescopic rod, and a limiting spring capable of defining the initial working position of the plugging table is further sleeved on the telescopic rod.

[0008] According to a preferred embodiment, the adjustable pressure release mechanism is movably inserted into the second groove hole, and a sealing sleeve ring capable of filling the insertion gap between the second groove hole and the insertion sleeve is sleeved on the insertion sleeve; a U-shaped air guide channel is formed in the insertion sleeve.

[0009] According to a preferred embodiment, a plurality of limiting grooves are arrayed on the limiting plate of the clamping assembly, and a through adsorption hole penetrating the plate body of the limiting plate is provided at the bottom of the limiting groove, wherein the axial upper end of the through adsorption hole is embedded with a negative pressure adsorption filling gasket.

[0010] According to a preferred embodiment, the limiting plate is further connected to the exchange plate at the bottom of the limiting plate, and the upper surface of the exchange plate is provided with an air guide groove communicating with a plurality of through adsorption holes, a guide tube communicating with the air guide groove is inserted into the bottom of the exchange plate, and a cross insertion plate capable of changing the working position of the plugging table and guiding the first groove hole is inserted into the guide tube.

[0011] According to a preferred embodiment, a gasket ring capable of filling the assembly gap between the bottom surface of the plate body of the interchanging plate and the inner bottom surface of the accommodating groove is embedded on the bottom surface of the plate body; and a sealing gasket ring capable of filling the butt joint gap between the lumen of the lead-through pipe and the first slot hole is sleeved on the axial lower end of the lead-through pipe.

[0012] According to a preferred embodiment, an alignment protrusion is further arranged on the bottom of the interchanging plate, and an alignment groove is further formed on the inner bottom surface of the accommodating groove, which is matched with the alignment protrusion.

[0013] According to a preferred embodiment, the vacuum generating unit comprises a vacuum generator, a support frame, a shunt pipe head and connecting pipes, wherein the vacuum generator is mounted on the rotating shaft of the first rotary motor, and the top end of the vacuum generator is provided with the support frame capable of protecting the shunt pipe head, the shunt pipe head is connected with the negative pressure end of the vacuum generator, and the end of the shunt pipe head away from the vacuum generator is communicated with the third slot hole through a plurality of parallel connecting pipes.

[0014] According to a preferred embodiment, the rotary conveying plate is mounted on the mounting plane defined by the support frame.

[0015] The utility model discloses the beneficial effect is:

[0016] The present application can replace different clamping assemblies according to the needs, and the convenient dismounting operation of the clamping assembly and the interchanging plate on the installation assembly is completed through the adjustable negative pressure adsorption, which reduces the dismounting cycle and improves the dismounting rate. The use of vacuum adsorption positioning method can ensure the positioning stability while avoiding the dismounting complexity and wear problem of threaded connection, improving the service life and replacement rate of structural parts and improving the work efficiency. The installation assembly of the present application can construct a negative pressure flow channel or an internal and external pressure balance flow channel according to the assembly condition and human operation state, so as to facilitate the positioning and dismounting of the workpiece, the interchanging plate and the clamping assembly. In addition, the clamping assembly of the present application can be arranged with a plurality of mounting grooves on the mounting surface defined thereby, so as to facilitate the quick and equal-interval placement of a plurality of workpieces, so as to limit the position of the workpiece on the clamping assembly by simultaneously utilizing the vacuum adsorption force under the condition of leading through the negative pressure channel, and facilitate dismounting and replacement by adjusting the smoothness of the negative pressure channel, realizing the positioning convenience and dismounting efficiency of a plurality of aviation parts on the same clamping assembly, and improving the work efficiency and the comprehensive machining capacity. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a preferred general-purpose interchangeable vacuum clamp structure schematic diagram of the utility model;

[0018] Figure 2 is a preferred general-purpose interchangeable vacuum clamp installation assembly structure schematic diagram of the utility model;

[0019] Figure 3 is a preferred general-purpose interchangeable vacuum clamp structure schematic diagram when the third slot hole is inserted into the column body of the utility model;

[0020] Figure 4 is a preferred general-purpose interchangeable vacuum clamp interchangeable plate and clamping assembly structure schematic diagram of the utility model;

[0021] Figure 5 is a preferred general-purpose interchangeable vacuum clamp interchangeable plate bottom view of the utility model;

[0022] Figure 6 is a preferred general-purpose interchangeable vacuum clamp clamping assembly bottom view of the utility model.

[0023] LIST OF REFERENCE NUMERALS

[0024] 1: rotary conveying plate, 2: first rotary motor, 3: installation assembly, 4: interchangeable plate, 5: clamping assembly, 6: vacuum generating unit, 31: containing groove, 32: pressing through mechanism, 33: adjustable pressure release mechanism, 311: first slot hole, 312: second slot hole, 313: third slot hole, 314: alignment groove, 321: cross bracket, 322: telescopic rod, 323: plugging table, 324: limit spring, 331: insertion column body, 332: sealing ring, 333: U-shaped air guide channel, 41: air guide groove, 42: through pipe, 43: cross insertion plate, 44: edge gasket ring, 45: sealing gasket ring, 46: alignment protrusion, 51: limit plate, 52: limit slot, 53: through adsorption hole, 54: negative pressure adsorption filling gasket, 61: vacuum generator, 62: support frame, 63: shunt pipe head, 64: connecting pipe. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the utility model will be briefly introduced with the description of the drawings and embodiments or prior art, and obviously, the following description of the structure of the drawings is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings.

[0026] The technical solutions provided by the utility model will be described in detail below with reference to the drawings by way of examples. It should be noted that the descriptions of these examples are used to help understand the utility model, but do not constitute a limitation on the utility model. In some examples, some embodiments belong to existing or conventional technologies, and thus are not described or not described in detail.

[0027] In addition, the technical features described in the present document, or the steps in all the disclosed methods, can be combined in any suitable manner in one or more embodiments, except for mutually exclusive features and / or steps. It is easy for those skilled in the art to understand that the order of steps or operations of the methods related to the examples provided herein can also be changed. Any order in the drawings and examples is only used for illustration and does not imply that a certain order is required, unless it is explicitly stated that a certain order is required.

[0028] The serial numbers of components in the present document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application include direct and indirect connection (coupling) under reasonable circumstances (except for self-contradictory circumstances).

[0029] The following will be described in detail with reference to the drawings.

[0030] Example 1

[0031] The present application provides a general-purpose interchangeable vacuum clamp, which comprises a rotary conveying plate 1, a first rotary motor 2, a mounting assembly 3, an interchangeable plate 4, a clamping assembly 5 and a vacuum generating unit 6.

[0032] According to Figures 1-6In the shown specific embodiment, the first rotary motor 2 can drive the rotary conveying plate 1 to rotate. The first rotary motor 2 is detachably mounted on the workbench of the machining center. The rotary conveying plate 1 is provided with the installation assemblies 3 arranged at intervals in a ring shape. The detachable interchangeable plate 4 is detachably mounted in the slot cavity defined by the installation assembly 3. The clamping assembly 5 capable of limiting the arrayed aviation parts is connected to the interchangeable plate 4. The vacuum generating unit 6 capable of providing negative pressure suction force for the vacuum suction mounting of the workpiece limited by the interchangeable plate 4 and the clamping assembly 5 is arranged at the bottom of the rotary conveying plate 1. The present application can realize the continuous conveying of the clamping assembly 5 and the interchangeable plate 4, realize the continuous supply of the workpiece, reduce the need for shutdown and disassembly, realize the partition of the machining position and the disassembly position, facilitate continuous machining, and thus improve the machining efficiency. The present application can replace different clamping assemblies 5 according to the needs, and the clamping assembly 5 and the interchangeable plate 4 can be conveniently disassembled in the installation assembly 3 through adjustable negative pressure suction, which reduces the disassembly cycle and improves the disassembly rate. The vacuum suction positioning method can ensure the stability of positioning while avoiding the disassembly complexity and wear problem of threaded connection, improving the service life and replacement rate of the structural part and improving the work efficiency. The installation assembly 3 of the present application can construct a negative pressure flow channel or an internal and external pressure balance flow channel according to the assembly condition and the human operation state, so as to facilitate the positioning and disassembly of the workpiece and the interchangeable plate 4 and the clamping assembly 5. In addition, the clamping assembly 5 of the present application can be provided with a plurality of mounting grooves on the mounting surface defined thereby, so as to facilitate the fast and equidistant placement of a plurality of workpieces, so as to simultaneously utilize the vacuum suction force to limit the position of the workpiece on the clamping assembly 5 under the condition that the negative pressure channel is open, and facilitate disassembly and replacement by adjusting the openness of the negative pressure channel, realizing the limiting convenience and disassembly efficiency of a plurality of aviation parts on the same clamping assembly 5, facilitating fast clamping and improving work efficiency, and thus improving the overall machining capacity.

[0033] Preferably, the rotary conveying plate 1 can adopt a disc-shaped plate body, which facilitates the intermittent deflection movement of a plurality of components arranged at intervals in a ring shape around the central axis thereof under the driving force of the deflection, so as to intermittently drive a plurality of clamps to pass through the machining position in turn, thereby realizing continuous feeding and continuous non-stop machining of the machining center. The machining position and the mounting position are partitioned and arranged to realize the synchronization of the two, thereby improving the overall efficiency of continuous machining. Preferably, the first rotary motor 2 is an intermittent deflection motor, which can set the intermittent period and the deflection angle according to the needs, so as to facilitate the orderly passage of a plurality of installation assemblies 3 through the machining position.

[0034] Preferably, the installation assembly 3 comprises a containing groove 31, a pressing guide mechanism 32 and an adjustable pressure release mechanism 33, preferably, the containing groove 31 is embedded on the rotary conveying plate 1. Further preferably, the groove bottom of the containing groove 31 is provided with a first groove hole 311 containing the pressing guide mechanism 32, a second groove hole 312 in which the adjustable pressure release mechanism 33 is inserted, and a third groove hole 313 which can communicate with the vacuum generating unit 6. Preferably, the first groove hole 311 and the third groove hole 313 are coaxially communicated and penetrate the groove bottom of the containing groove 31. Specifically, the second groove hole 312 communicates with the third groove hole 313 in a manner of penetrating the hole side wall of the third groove hole 313, so that the adjustable pressure release mechanism 33 can cut off the hole cavity of the third groove hole 313 in a manner of selectively inserting the second groove hole 312 into the third groove hole 313. Preferably, the second groove hole 312 and the third groove hole 313 can be square, rectangular or other polygonal hole cavities that are matched, and the inserted column body 331 of the adjustable pressure release mechanism 33 is a column-shaped element that is matched with the inner hole cross section of the second groove hole 312 and can effectively cut off the third groove hole 313. Specifically, the second groove hole 312 and the third groove hole 313 are preferably square holes with the same axial cross-sectional size. Preferably, an alignment groove 314 matched with the alignment protrusion 46 is also provided on the inner bottom surface of the containing groove 31. Preferably, the first groove hole 311 can be a hole cavity structure with a middle section cross section larger than the upper end opening cross section, so that after the plugging table 323 that can plug the upper end opening of the first groove hole 311 moves downward, the entire hole cavity of the first groove hole 311 is in a conductive state to form a smooth negative pressure flow channel. The containing groove 31 provided in the application can position and install the stacked interchangeable plates 4 and the clamping assembly 5, and in the case that the interchangeable plates 4 press down the pressing guide mechanism 32 to make the negative pressure channel conductive, the workpiece can be vacuum adsorbed and positioned in the limiting groove 52 of the clamping assembly 5 to ensure the stability of the negative pressure positioning of the workpiece. After the workpiece processing is completed, the adjustable pressure release mechanism 33 can release the negative pressure adsorption force of the workpiece, the interchangeable plates 4 and the clamping assembly 5 by cutting off the groove hole flow channel, thereby facilitating and quickly completing the disassembly and replacement of the interchangeable plates 4 and the clamping assembly 5, so as to improve the disassembly and replacement of tool components and workpieces, and further improve the comprehensive processing efficiency and convenience, so as to replace the clamping assembly 5 matched with different workpieces according to the demand to complete the continuous feeding and processing of different workpieces by using the same vacuum clamp body.

[0035] Preferably, the cross-shaped support 321 of the pressing and conducting mechanism 32 is horizontally arranged in the first slot hole 311. Preferably, a telescopic rod 322 capable of ascending and descending in the first slot hole 311 is supported on the cross-shaped support 321. Preferably, the axial end of the telescopic rod 322 is connected with a blocking table 323 capable of blocking the opening of the first slot hole 311. Further preferably, a limiting spring 324 capable of limiting the initial working position of the blocking table 323 is further sleeved on the telescopic rod 322. The blocking table 323 of the pressing and conducting mechanism 32 provided in the application can be lowered under the pressure of the interchangeable plate 4 to release the blocking of the upper end opening of the first slot hole 311, so that the first slot hole 311 is conducted to communicate with the air guide groove 41 and the through suction hole 53, thereby generating a negative pressure suction force capable of acting on the lower surface of the workpiece, so that the workpiece is stably positioned in the limiting slot 52 of the limiting plate 51 under the action of the negative pressure suction, and then the integrally connected interchangeable plate 4 and limiting plate 51 are pressed against the containing groove 31.

[0036] Preferably, the penetrating column 331 of the adjustable pressure releasing mechanism 33 is movably inserted into the second slot hole 312. Further preferably, the side wall surface of the penetrating column 331 is sleeved with a sealing ring 332 capable of filling the insertion gap between the penetrating column 331 and the second slot hole 312. Preferably, a U-shaped air guide channel 333 capable of releasing the negative pressure environment in the first slot hole 311 is formed in the penetrating column 331. Specifically, the two openings of the U-shaped air guide channel 333 both penetrate the same side surface of the penetrating column 331, and the U-shaped air guide channel 333 is sleeved with the sealing ring 332 on both sides of the opening close to the third slot hole 313. Specifically, the movement of the penetrating column 331 can be manually controlled by the operator, so that the penetrating column 331 can change its working position under the control of the operator, so that the penetrating column 331 is inserted into the third slot hole 313 to cut off the negative pressure flow channel or only blocks the second slot hole 312 to make the first slot hole 311 communicate with the third slot hole 313 to form a smooth negative pressure flow channel. When the penetrating column 331 is inserted into the third slot hole 313, the U-shaped air guide channel 333 can communicate the hole cavity of the first slot hole 311 with the external environment, so as to input external air into the hole cavity of the first slot hole 311, so that the air pressure in the first slot hole 311 is balanced with the external air pressure, thereby releasing the vacuum suction effect on the interchangeable plate 4, the clamping assembly 5 and the workpiece, thereby facilitating the dismounting and replacing of the interchangeable plate 4, the clamping assembly 5 and the workpiece after machining.

[0037] Preferably, the upper surface of the interchangeable plate 4 is provided with air guide grooves 41 which are in communication with a plurality of through suction holes 53. Preferably, the bottom of the interchangeable plate 4 is provided with a through pipe 42 which is in communication with the air guide grooves 41. Further preferably, the through pipe 42 is provided with a cross-shaped plug plate 43 which can change the working position of the blocking platform 323 and guide the first slot hole 311. Preferably, the bottom surface of the interchangeable plate 4 is provided with a peripheral gasket 44 which can fill the assembly gap between the bottom surface of the slot and the containing groove 31. Preferably, the axial lower end of the through pipe 42 is provided with a sealing gasket 45 which can fill the butt joint gap between the lumen of the pipe and the first slot hole 311. Preferably, the bottom of the interchangeable plate 41 is also provided with an alignment protrusion 46. The interchangeable plate 4 provided in the present application can position the embedding station by groove body limiting installation and calibration of the alignment protrusion 46, and it can be stably embedded in the containing groove 31 under the limitation of the downward pressure generated by the vacuum suction force, thereby ensuring the stability of embedding and facilitating pressure relief disassembly.

[0038] Preferably, the bottom of the limiting plate 51 of the clamping assembly 5 is integrally connected with the interchangeable plate 4, so that they form a complete plate body structure, and the surfaces in contact with each other form a through and closed negative pressure chamber. Preferably, a plurality of limiting grooves 52 are arrayed on the limiting plate 51. Preferably, the bottom of the limiting groove 52 is provided with a through suction hole 53 which penetrates the plate body of the limiting plate 51. Preferably, the axial upper end of the through suction hole 53 is provided with an expansion opening which expands the suction positioning area. Specifically, the expansion opening edge of the through suction hole 53 is embedded with a negative pressure suction filling gasket 54. Preferably, the groove cavity profile shape of the limiting groove 52 can be selectively excavated according to the actual product, so that the limiting plate 51 can be used for processing a variety of different products, thereby improving the versatility of the vacuum clamp main body for processing a variety of products.

[0039] Preferably, the vacuum generating unit 6 includes a vacuum generator 61, a support frame 62, a shunt pipe head 63, and a connecting pipe 64. Preferably, the vacuum generator 61 is installed on the rotating shaft of the first rotary motor 2. Further preferably, the top end of the vacuum generator 61 is provided with a support frame 62 which can protect the shunt pipe head 63. Preferably, the shunt pipe head 63 is connected to the negative pressure end of the vacuum generator 61. Specifically, the end of the shunt pipe head 63 away from the vacuum generator 61 is in communication with the third slot hole 313 through a plurality of parallel connecting pipes 64. Preferably, the rotary conveying plate 1 is installed on the installation plane defined by the support frame 62. The support frame 62 provided in the present application can build a protection frame to install the shunt pipe head 63, and the top surface thereof can fixedly install the rotary conveying plate 1 so that the structure is stable and does not conflict with each other, facilitating the generation of negative pressure suction force to suck the air in the plurality of slot holes to form a vacuum-like environment.

[0040] The working principle of the present application is:

[0041] The several aviation parts are pre-interval arranged in the limiting groove 52 of the limiting plate 51, so that the bottom surface of the aviation parts is attached to the bottom surface of the limiting groove 52 to block the through adsorption hole 53;

[0042] The integrated exchange plate 4 and limiting plate 51 are embedded into the containing groove 31, so that the first slot hole 311 is guided by the self-weight of the exchange plate 4 and limiting plate 51 to press down the blocking table 323, so that the first slot hole 311 is guided to be open, so that the aviation parts in the limiting groove 52 are pulled by the negative pressure generated by the vacuum generating unit 6, so that the aviation parts are pressed in the limiting groove 52, and then the aviation parts press the exchange plate 4 and the limiting plate 51 in the containing groove 31, so that the positioning of the easy-to-disassemble structure and the limiting of the aviation parts are realized.

[0043] When the first rotary motor 2 drives the rotary conveying plate 1 to deflect to complete the processing of the aviation parts, the operator pushes the penetrating column 331 to insert into the third slot hole 313 in the next intermittent deflection stagnation area, so as to cut off the negative pressure channel between the first slot hole 311 and the vacuum generating unit 6, and the U-shaped air guide channel 333 on the penetrating column 331 can be in communication with the first slot hole 311, so that the negative pressure in the first slot hole 311 is balanced to release the negative pressure adsorption of the aviation parts, so that the operator can quickly disassemble the exchange plate 4 and the limiting plate 51, so as to complete the replacement of the clamping structure. After disassembling the exchange plate 4, the blocking table 323 can be lifted under the driving of the limiting spring 324 to block the first slot hole 311 again, so that the reset of the penetrating column 331 does not lead to the communication of the negative pressure channel with the outside, so that the vacuum generating unit 6 can effectively suck the gas in the first slot hole 311 to form a negative pressure environment again, so as to facilitate the negative pressure adsorption of the next group of exchange plates, penetrating columns 331 and aviation parts.

[0044] The utility model is not limited to the above optional implementation, anyone can draw other various forms of product under the enlightenment of the utility model, but no matter make any change in its shape or structure, all technical schemes falling into the scope defined by the claims of the utility model are within the protection scope of the utility model. The utility model specification and its drawings are all illustrative and not constitute the limitation to the claims. The protection scope of the utility model is defined by the claims and its equivalents. In the full text, the features guided by "preferably" are only optional ways and should not be understood as necessary to be set, so the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A universal interchangeable vacuum clamp, comprising a first rotary motor (2) capable of driving a rotary conveying plate (1) to rotate on a worktable of a machining center, characterized in that a plurality of installation assemblies (3) are annularly and spacedly embedded on the rotary conveying plate (1), and a detachable interchangeable plate (4) is detachably installed in a cavity defined by the installation assembly (3), and a clamping assembly (5) capable of limiting aviation parts arranged in an array is connected to the interchangeable plate (4), a vacuum generating unit (6) capable of providing a negative pressure suction force for vacuum suction installation of workpieces limited by the interchangeable plate (4) and the clamping assembly (5) is further arranged at the bottom of the rotary conveying plate (1). The installation assembly (3) comprises a containing groove (31), a pressing guide mechanism (32) and an adjustable pressure releasing mechanism (33), wherein 2. The universal interchangeable vacuum clamp of claim 1, wherein, the containing groove (31) is embedded on the rotary conveying plate (1), and a first groove hole (311) containing the pressing guide mechanism (32), a second groove hole (312) in which the adjustable pressure releasing mechanism (33) is inserted, and a third groove hole (313) capable of communicating with the vacuum generating unit (6) are arranged on the groove bottom of the containing groove (31), the first groove hole (311) and the third groove hole (313) are coaxially communicated and penetrate the groove bottom of the containing groove (31), and the second groove hole (312) penetrates the hole side wall of the third groove hole (313). The cross-shaped bracket (321) of the pressing guide mechanism (32) is transversely installed in the first groove hole (311), a telescopic rod (322) capable of ascending and descending in the first groove hole (311) is supported on the cross-shaped bracket (321), an occlusion table (323) capable of occluding the opening of the first groove hole (311) is connected to the axial upper end of the telescopic rod (322), and a limiting spring (324) capable of limiting the initial working position of the occlusion table (323) is further sleeved on the telescopic rod (322).

3. The universal interchangeable vacuum clamp of claim 2, wherein, The insertion column (331) of the adjustable pressure releasing mechanism (33) is movably inserted in the second groove hole (312), and a sealing sleeve ring (332) capable of filling the insertion gap between the insertion column (331) and the second groove hole (312) is sleeved on the insertion column (331); a U-shaped gas guide channel (333) is arranged in the insertion column (331).

4. The universal interchangeable vacuum clamp of claim 3, wherein, A plurality of limiting grooves (52) are arranged in an array on the limiting plate (51) of the clamping assembly (5), and a through suction hole (53) penetrating the plate body of the limiting plate (51) is arranged at the bottom of the limiting groove (52), wherein 5. The universal interchangeable vacuum clamp of claim 4, wherein, the axial upper end of the through suction hole (53) is embedded with a negative pressure suction filling gasket (54). The interchangeable plate (4) is further connected to the bottom of the limiting plate (51), and a gas guide groove (41) simultaneously communicating a plurality of through suction holes (53) is arranged on the upper surface of the interchangeable plate (4), 6. The universal interchangeable vacuum clamp of claim 5, wherein, ​ A through pipe (42) is inserted into the bottom of the interchange plate (4) and communicates with the air guide groove (41), and a cross-shaped plug plate (43) is inserted into the through pipe (42) and can change the working position of the sealing platform (323) and guide the first slot hole (311).

7. The universal interchangeable vacuum clamp of claim 6, wherein, A round edge gasket (44) is embedded on the bottom surface of the plate body of the interchange plate (4) and can fill the assembly gap between the gasket and the inner bottom surface of the accommodating groove (31); A sealing gasket (45) is sleeved on the axial lower end of the through pipe (42) and can fill the butt joint gap between the lumen of the through pipe (42) and the first slot hole (311).

8. The universal interchangeable vacuum clamp of claim 7, wherein, An alignment protrusion (46) is further arranged on the bottom of the interchange plate (4), and an alignment groove (314) is further arranged on the inner bottom surface of the accommodating groove (31) and is matched with the alignment protrusion (46).

9. The universal interchangeable vacuum clamp of claim 8, wherein, The vacuum generating unit (6) comprises a vacuum generator (61), a support frame (62), a shunt pipe head (63) and a connecting pipe (64), wherein, The vacuum generator (61) is installed on the rotating shaft of the first rotary motor (2), and the top end of the vacuum generator (61) is provided with the support frame (62) which can protect the shunt pipe head (63), The shunt pipe head (63) is connected with the negative pressure end of the vacuum generator (61), and the end of the shunt pipe head (63) away from the vacuum generator (61) is communicated with the third slot hole (313) through a plurality of parallel connecting pipes (64).

10. The universal interchangeable vacuum clamp of claim 9, wherein, The rotary conveying plate (1) is installed on the mounting plane defined by the support frame (62).

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