Clamp assembly

Abstract

The clamp assembly comprises a rotary table assembly and at least two clamp assemblies, the rotary table assembly comprises a rotary table, a tailstock and a bridge plate, the bridge plate is arranged between the rotary table and the tailstock and rotates according to the rotary table and the tailstock, and at least two sets of positioning assemblies are arranged on the bridge plate at intervals. Any group of positioning components comprises a plurality of zero point positioners; the at least two clamp assemblies are arranged on the rotary table assembly at intervals in the first direction, each clamp assembly comprises a first positioning plate, a pressing piece and a plurality of zero-point positioning pins, the pressing pieces and the zero-point positioning pins are arranged on the two sides of the first positioning plate in the second direction correspondingly, the pressing pieces are used for fixing workpieces, and the zero-point positioning pins are used for positioning the workpieces. And the plurality of zero-point positioning pins are in positioning fit with the plurality of zero-point positioners. The zero-point positioning pins and the zero-point positioners are matched in a positioning mode, so that the clamp assembly can be rapidly disassembled and assembled, bridge plates do not need to be replaced for workpieces of different sizes, oil way sealing abrasion is avoided, the clamping time is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a clamp assembly. Background Art

[0002] Aluminum alloy workpieces require a fixture during processing. The fixture fixes the aluminum alloy workpiece to facilitate processing. There are various fixtures on the market. The most common one for aluminum alloy workpiece processing is the four-axis fixture. The rotation of the four axes inside the four-axis fixture can complete the entire workload of the vertical machining center, including milling contours, milling grooves, drilling, tapping, and chamfering.

[0003] However, different workpieces have different sizes, and the bridge plate design and layout required for different workpieces are quite different, so the bridge plate needs to be replaced frequently. The overall weight of the bridge plate is 150-200KG, and the hoisting process is difficult and time-consuming. After reinstallation, the accuracy of the fixture positioning needs to be confirmed, which is not conducive to high-efficiency production methods, and will cause certain production waste and affect production efficiency. In addition, the design of the existing fixture has great limitations on the positioning and clamping cylinder layout. When using the fixture for processing, some products need to sacrifice the rationality of the design scheme, which has a certain impact on the stability and processing quality of the processing process. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a clamp assembly, which uses multiple zero-point positioning pins and multiple zero-point positioners for positioning and matching, so that the clamp assembly can be quickly disassembled and assembled, improves processing accuracy, saves clamping time, and improves production efficiency.

[0005] According to the embodiment of the utility model, the fixture assembly includes: a turntable assembly, the turntable assembly includes: a turntable, a tailstock and a bridge plate, the bridge plate is arranged between the turntable and the tailstock and rotates according to the turntable and the tailstock, at least two groups of positioning assemblies are arranged on the bridge plate at intervals, and any group of the positioning assemblies includes a plurality of zero-point locators; at least two fixture assemblies, at least two of the fixture assemblies are arranged on the turntable assembly at intervals in the first direction, the fixture assembly includes: a first positioning plate, a clamping member and a plurality of zero-point positioning pins, the clamping member and the plurality of zero-point positioning pins are respectively arranged on both sides of the first positioning plate in the second direction, the clamping member is used to fix the workpiece, and the plurality of zero-point positioning pins and the plurality of zero-point locators are positioned and matched.

[0006] According to the clamp assembly of the embodiment of the utility model, a plurality of zero-point positioning pins and a plurality of zero-point positioners are used for positioning and cooperation, so that the clamp assembly can be quickly disassembled and assembled. There is no need to replace the entire bridge plate for different workpiece sizes, thus avoiding wear of the oil circuit seal. In addition, the clamp assembly is lighter in weight and smaller in size, and the difficulty of lifting is reduced. The design of the workpiece does not need to be changed, which can improve processing accuracy, save clamping time, and improve production efficiency.

[0007] According to some embodiments of the present invention, there are four zero-point positioning pins, and the four zero-point positioning pins are spaced apart and arranged at the edge of the first positioning plate.

[0008] According to some embodiments of the utility model, a locking part is provided on the zero point locator, and the locking part is used to lock the zero point positioning pin; and the locking part is one or more of a hydraulic locking part, a pneumatic locking part and a mechanical locking part.

[0009] According to some embodiments of the utility model, the clamping part includes: a driving part, a supporting part, a transmission part and a clamping part, one end of the supporting part is arranged on the driving part and the other end is connected to the transmission part, one end of the transmission part is transmission-connected to the driving part and the other end is provided with the clamping part, and the clamping part is used to clamp the workpiece.

[0010] According to some embodiments of the utility model, the fixture assembly further includes: a support table, the support table is fixed on the first positioning plate, the side of the support table away from the first positioning plate is a support surface, and the workpiece is placed on the support surface.

[0011] According to some embodiments of the utility model, the clamp assembly further includes: a positioning member, the positioning member is fixed on the first positioning plate, a first positioning portion is provided on a side of the positioning member away from the first positioning plate, and the first positioning portion is used for positioning and cooperating with the workpiece.

[0012] According to some embodiments of the present invention, there are at least two positioning members, and at least two positioning members are spaced apart on the first positioning plate.

[0013] According to some embodiments of the utility model, the turntable assembly further includes: two sliding members, one end of the two sliding members are respectively fixed to the two ends of the bridge plate in the first direction, and the other ends of the two sliding members are respectively slidably connected to the turntable and the tailstock.

[0014] According to some embodiments of the utility model, a sliding protrusion is provided at the other end of the sliding member, and sliding grooves are provided on the tailstock and the turntable, and the sliding protrusion and the sliding groove are slidably matched.

[0015] According to some embodiments of the present invention, there are multiple sliding members, and the multiple sliding members are arranged at both ends of the bridge plate in the first direction and are spaced apart in the second direction of the bridge plate.

[0016] According to some embodiments of the utility model, the bridge plate includes: a bottom plate and two side plates, the two side plates are arranged at both ends of the bottom plate in a first direction and extend in a second direction, and the two side plates are respectively connected to the turntable and the tailstock.

[0017] According to some embodiments of the utility model, the turntable assembly also includes: a first oil separator and a second oil separator, the first oil separator is arranged on the side plate, the second oil separator is arranged on the bottom plate, and a first oil channel connecting the first oil separator and the second oil separator is arranged on the bottom plate.

[0018] According to some embodiments of the utility model, the clamp assembly further includes: a joint, the second oil distributor is connected to the joint, and a second oil passage connecting the joint and the clamping member is provided on the first positioning plate.

[0019] According to some embodiments of the utility model, the turntable assembly also includes: a second positioning plate, the turntable and the tailstock are both fixed on the second positioning plate, and the first positioning plate, and / or the second positioning plate, and / or the bridge plate are provided with weight reduction holes.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a structural schematic diagram of a fixture assembly and a workpiece according to an embodiment of the utility model;

[0023] Figure 2 is a structural schematic diagram of a turntable assembly according to an embodiment of the utility model;

[0024] Figure 3 is a structural schematic diagram of a clamp assembly according to an embodiment of the utility model;

[0025] Figure 4 is a side view of a turntable assembly according to an embodiment of the utility model;

[0026] Figure 5 It is a structural schematic diagram of a fixture assembly and a workpiece according to an embodiment of the utility model;

[0027] Figure 6 is a structural schematic diagram of a clamp assembly according to an embodiment of the utility model;

[0028] Figure 7 is a side view of a clamp assembly according to an embodiment of the utility model;

[0029] Figure 8 It is a structural schematic diagram of a sliding member according to an embodiment of the utility model.

[0030] Reference numerals:

[0031] 100. Fixture assembly;

[0032] 10. Turntable assembly; 11. Turntable; 12. Tailstock; 13. Bridge plate; 131. Bottom plate; 132. Side plate; 14. Zero point locator; 15. Sliding member; 151. Sliding groove; 16. Sliding protrusion; 17. First oil distributor; 18. Second oil distributor; 19. Second positioning plate; 191. Weight reduction hole;

[0033] 20. Clamp assembly; 21. First positioning plate; 22. Pressing member; 221. Driving part; 222. Supporting part; 223. Transmission part; 224. Pressing part; 23. Zero point positioning pin; 24. Supporting platform; 25. Positioning member; 26. Joint; 27. Oil pipe. DETAILED DESCRIPTION

[0034] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0035] Reference below Figure 1-Figure 8 A clamp assembly 100 according to an embodiment of the present invention is described.

[0036] Reference Figure 1-7 As shown, the clamp assembly 100 of the embodiment of the present invention includes: a turntable assembly 10 and at least two clamp assemblies 20 .

[0037] The turntable assembly 10 includes: a turntable 11, a tailstock 12 and a bridge plate 13. The bridge plate 13 is arranged between the turntable 11 and the tailstock 12 and rotates according to the turntable 11 and the tailstock 12. At least two groups of positioning components are arranged at intervals on the bridge plate 13, and any group of positioning components includes multiple zero point positioners 14.

[0038] The most commonly used four-axis fixture for processing aluminum alloy workpieces is the X, Y, Z axis and the fourth axis, and the fourth axis is the rotation axis. Specifically, the workpiece can be fixed on the bridge plate 13, and the bridge plate 13 is connected between the turntable 11 and the tailstock 12. The turntable 11 enables the bridge plate 13 to rotate according to the turntable 11 and the tailstock 12, and the workpiece on the bridge plate 13 also rotates accordingly. In this way, the workpiece can be processed at multiple angles, reducing the clamping time of the workpiece between different processing steps and improving production efficiency. For workpieces that need to be processed on multiple sides or with complex shapes, the rotation of the bridge plate 13 can achieve complex processing paths and process requirements.

[0039] At least two clamp assemblies 20 are arranged on the turntable assembly 10 at intervals in the first direction, and the clamp assembly 20 includes: a first positioning plate 21, a clamping member 22 and a plurality of zero-point positioning pins 23. The clamping member 22 and the plurality of zero-point positioning pins 23 are respectively arranged on both sides of the first positioning plate 21 in the second direction, and the clamping member 22 is used to fix the workpiece, and the plurality of zero-point positioning pins 23 and the plurality of zero-point locators 14 are positioned and matched.

[0040] The clamp assembly 20 is used to clamp the workpiece and press it to fix it to prevent the workpiece from loosening during the processing and causing poor processing. Specifically, the workpiece is arranged above the first positioning plate 21, and the workpiece is fixed to the first positioning plate 21 by a clamping member 22. There can be multiple clamping members 22, and multiple clamping members 22 are arranged on both sides of the first positioning plate 21 in the second direction, which can apply pressure evenly to the workpiece, and the fixation of the workpiece is more stable and reliable.

[0041] Furthermore, there may be four pressing members 22 , with two pressing members 22 on each side of the first positioning plate 21 in the second direction.

[0042] A plurality of zero-point positioning pins 23 are arranged on both sides of the first positioning plate 21 in the second direction, and at least two groups of positioning components are arranged at intervals on the bridge plate 13. Any group of positioning components includes a plurality of zero-point positioners 14, and the positions of the zero-point positioners 14 and the zero-point positioning pins 23 correspond one to one. Through the positioning and matching of the plurality of zero-point positioning pins 23 and the plurality of zero-point positioners 14, the fixture assembly 20 can be fixed on the bridge plate 13. In this way, the fixture assembly 20 can be replaced to adapt to different workpiece sizes without disassembling the entire bridge plate 13, avoiding wear of the oil circuit seal, and the fixture assembly 20 is lighter in weight, smaller in size, and less difficult to hoist, saving clamping time, and improving production efficiency.

[0043] Moreover, replacing the fixture assembly 20 can reduce or avoid sacrificing the rationality of the design scheme when using the fixture assembly 20 for processing. For example, when the entire bridge plate 13 needs to be replaced, the bridge plate 13 is difficult to replace, and replacement is avoided as much as possible during processing. Therefore, the energy absorption box and the mounting plate in the aluminum alloy anti-collision beam energy absorption box are processed separately and then welded, which is easy to cause error accumulation, and ultimately requires repeated debugging, which is easy to affect the delivery process. After only replacing the fixture assembly 20, the appropriate fixture assembly 20 can be replaced according to the structure of different workpieces. The energy absorption box and the mounting plate can be welded before processing, which can improve the processing accuracy of the energy absorption box and the mounting plate mounting hole, shorten the debugging cycle of welding with the anti-collision beam main beam, and effectively improve the processing quality and production efficiency.

[0044] The pressing member 22 may be a pressing cylinder, a mounting hole is provided on the first positioning plate 21, and the pressing member 22 and the zero point positioning pin 23 are both mounted on the first positioning plate 21 by bolts.

[0045] Also, the first direction may be the front-to-back direction, and the second direction may be the left-to-right direction, or the first direction may be the left-to-right direction, and the second direction may be the front-to-back direction.

[0046] Therefore, by utilizing multiple zero-point positioning pins 23 and multiple zero-point positioners 14 for positioning and cooperation, the fixture assembly 20 can be quickly disassembled and assembled. There is no need to replace the entire bridge plate 13 for different workpiece sizes, thus avoiding wear of the oil circuit seal. In addition, the fixture assembly 20 is lighter in weight and smaller in size, making it less difficult to lift. The design of the workpiece does not need to be changed, thus improving processing accuracy, saving clamping time, and increasing production efficiency.

[0047] Reference Figure 7 As shown, there may be four zero-point positioning pins 23, and the four zero-point positioning pins 23 are spaced apart at the edge of the first positioning plate 21. By arranging the four zero-point positioning pins 23 at intervals on the edge of the first positioning plate 21, the connection point of the clamp assembly 20 and the bridge plate 13 is evenly stressed, which can improve the thermal stability of the connection between the clamp assembly 20 and the bridge plate 13.

[0048] Furthermore, a locking part is provided on the zero point locator 14, and the locking part is used to lock the zero point positioning pin 23. The locking part can be one or more of a hydraulic locking part, a pneumatic locking part, and a mechanical locking part. In other words, the locking method of the zero point locator 14 and the zero point positioning pin 23 can use hydraulic, pneumatic transmission, and mechanical locking, etc. The use of hydraulic, pneumatic transmission or mechanical locking makes the two fit tightly, and the fixture assembly 20 can be quickly clamped and disassembled, thereby realizing the change of modular tooling between different products.

[0049] Among them, the connection between each clamp component 20 and the bridge plate 13 is an over-constrained assembly, which can achieve high-stability and high-positioning accuracy assembly. The repeated clamping positioning accuracy can fully meet the processing requirements. No secondary precision adjustment is required. The workpiece can be processed after clamping, shortening the working time of the entire process from disassembly, change of shape, precision confirmation, etc., and improving work efficiency.

[0050] Reference Figure 6 As shown, the clamping member 22 includes: a driving part 221, a supporting part 222, a transmission part 223 and a clamping part 224. One end of the supporting part 222 is arranged on the driving part 221 and the other end is connected to the transmission part 223. One end of the transmission part 223 is transmission-connected to the driving part 221 and the other end is provided with a clamping part 224. The clamping part 224 is used to clamp the workpiece. In this way, the hydraulic oil enters the driving part 221, and the pressure of the hydraulic oil is transmitted to the transmission part 223 through the driving part 221. The transmission part 223 converts the pressure into mechanical force, thereby pushing the clamping part 224 to move, and the clamping part 224 clamps or releases the workpiece.

[0051] The driving part 221 may be a hydraulic cylinder, and the transmission part 223 may be a piston rod and a lever arm.

[0052] Reference Figure 3 , Figure 5 and Figure 6 As shown, the fixture assembly 20 also includes: a support platform 24, the support platform 24 is fixed on the first positioning plate 21, and the side of the support platform 24 away from the first positioning plate 21 is a support surface, and the workpiece is placed on the support surface. That is, the support platform 24 is arranged above the first positioning plate 21, and the upper side of the support platform 24 is the support surface of the first positioning plate 21, which is used to contact the workpiece. There can be two support platforms 24, and the two support platforms 24 are respectively located on both sides of the second direction of the first positioning plate 21, which can provide stable support for the workpiece. At least two mounting holes are provided on the first positioning plate 21, and the support platform 24 is fixed to the first positioning plate 21 by bolt connection.

[0053] Reference Figure 3 , Figure 5 and Figure 6 As shown, the clamp assembly 20 also includes: a positioning member 25, the positioning member 25 is fixed on the first positioning plate 21, and a first positioning portion is provided on the side of the positioning member 25 away from the first positioning plate 21, and the first positioning portion is used to cooperate with the workpiece in positioning. That is, the positioning member 25 is arranged above the first positioning plate 21, and the upper part of the positioning member 25 is provided with the first positioning portion. The workpiece is first positioned to a suitable processing position by the first positioning portion, and then clamped and fixed by the clamping member 22, which can improve the clamping efficiency. Among them, the positioning member 25 can be a pin, and the first positioning portion can be round or rhombus-shaped, that is, the positioning member 25 can be a round pin or a rhombus pin.

[0054] Reference Figure 3 , Figure 5 and Figure 6 As shown, there are at least two positioning members 25, and at least two positioning members 25 are arranged at intervals on the first positioning plate 21. In this way, by arranging at least two positioning members 25 on the first positioning plate 21, the positioning members 25 are fixed to the first positioning plate 21 by bolts, and the positioning principle of two pins on one side is used, the stability of the processing positioning process can be effectively improved.

[0055] Reference Figure 1-4 As shown, the turntable assembly 10 further includes: two sliding members 15, one end of the two sliding members 15 is respectively fixed to the two ends of the bridge plate 13 in the first direction, and the other ends of the two sliding members 15 are respectively slidably connected to the turntable 11 and the tailstock 12. That is, one of the sliding members 15 is fixed between the bridge plate 13 and the turntable 11, and the other sliding member 15 is fixed between the bridge plate 13 and the tailstock 12, and the sliding members 15 can limit the positions of the bridge plate 13, the tailstock 12 and the turntable 11.

[0056] The other end of the sliding member 15 is provided with a sliding protrusion 16, and the tailstock 12 and the turntable 11 are provided with a sliding groove 151, and the sliding protrusion 16 and the sliding groove 151 are slidably matched. In other words, through the sliding match between the sliding protrusion 16 and the sliding groove 151, the bridge plate 13 can be fixed on the tailstock 12 or the turntable 11 to achieve common rotation.

[0057] The sliding member 15 may be a slider, and a sliding protrusion 16 is provided on the slider. The sliding protrusion 16 is clamped in the sliding groove 151 to limit the relative position of the bridge plate 13 and the tailstock 12 or the turntable 11. The sliding member 15 is also provided with a mounting hole, and the tailstock 12 or the turntable 11 and the sliding member 15 are tightly connected by bolts passing through the mounting holes of the sliding member 15.

[0058] In some embodiments, there may be multiple sliding members 15, which are disposed at both ends of the bridge plate 13 in the first direction and spaced apart in the second direction of the bridge plate 13. By increasing the number of sliding members 15, the tightness of the connection between the bridge plate 13 and the tailstock 12 or the turntable 11 can be improved.

[0059] Reference Figure 1-4 As shown, the bridge plate 13 includes: a bottom plate 131 and two side plates 132, the two side plates 132 are arranged at both ends of the bottom plate 131 in the first direction and extend in the second direction, and the two side plates 132 are respectively connected to the turntable 11 and the tailstock 12. The two side plates 132 of the bridge plate 13 can be connected to the turntable 11 and the tailstock 12 by bolts, so that the bridge plate 13, the turntable 11 and the side plates 132 are connected as a whole, and synchronous rotation can be achieved.

[0060] Reference Figure 1-4 As shown, the turntable assembly 10 also includes: a first oil separator 17 and a second oil separator 18. The first oil separator 17 is arranged on the side plate 132, and the second oil separator 18 is arranged on the bottom plate 131. The bottom plate 131 is provided with a first oil passage connecting the first oil separator 17 and the second oil separator 18. Specifically, the first oil separator 17 is fixed to the side plate 132 by bolt connection. The first oil separator 17 is provided with an oil inlet and a built-in oil passage. The built-in oil passage of the first oil separator 17 is connected with the first oil passage. The first oil separator 17 can push the hydraulic oil into the first oil passage in the bottom plate 131 of the bridge plate 13. The second oil separator 18 is fixed to the bottom plate 131 of the bridge plate 13 by bolts. The second oil separator 18 is also provided with a built-in oil passage. The first oil passage and the built-in oil passage of the second oil separator 18 are connected. In addition, a sealing screw plug is provided on the second oil separator 18 to seal the oil passage process hole of the second oil separator 18 to prevent hydraulic oil leakage.

[0061] The first oil separator 17 may be a rotary oil separator.

[0062] Reference Figure 3 and Figure 5 As shown, the clamp assembly 20 further includes: a joint 26, the second oil distributor 18 is connected to the joint 26, and the first positioning plate 21 is provided with a second oil passage connecting the joint 26 and the pressing member 22. That is, the hydraulic oil can flow into the joint 26 through the built-in oil passage of the second oil distributor 18, and then flow into the pressing member 22, so that the pressing member 22 completes the pressing action, wherein the hydraulic oil in the second oil distributor 18 can flow into the joint 26 through the oil pipe 27, and the joint 26 is fixed on the first positioning plate 21 through the mounting hole on the first positioning plate 21.

[0063] In summary, the transmission route of the hydraulic oil is: equipment hydraulic station → solenoid valve → oil inlet of the first oil distributor 17 → built-in oil circuit of the first oil distributor 17 → first oil channel → built-in oil circuit of the second oil distributor 18 → connector 26 → second oil channel → clamping piece 22 .

[0064] Reference Figure 1-4As shown, the turntable assembly 10 also includes: a second positioning plate 19, the turntable 11 and the tailstock 12 are both fixed on the second positioning plate 19, and the first positioning plate 21 and / or the second positioning plate 19 and / or the bridge plate 13 are provided with weight reduction holes 191. Specifically, the second positioning plate 19 is located below the turntable 11 and the tailstock 12, and the lower end of the turntable 11 is provided with a turntable 11 positioning plate folded relative to the turntable 11, and the turntable 11 positioning plate and the second positioning plate 19 are provided with mounting holes corresponding to the positions, and the bolts pass through the mounting holes on the turntable 11 positioning plate and the second positioning plate 19 to fix the turntable 11 on the second positioning plate 19. The lower end of the tailstock 12 is provided with a tailstock 12 positioning plate folded relative to the tailstock 12, and the tailstock 12 positioning plate and the second positioning plate 19 are provided with mounting holes corresponding to the positions, and the bolts pass through the mounting holes on the tailstock 12 positioning plate and the second positioning plate 19 to fix the turntable 11 on the second positioning plate 19.

[0065] Since the positioning plate of the turntable 11, the positioning plate of the tailstock 12, the second positioning plate and the mounting holes are all machined, a high assembly accuracy can be guaranteed, thereby ensuring the coaxiality of the rotation center of the turntable 11 and the tailstock 12, and ensuring the stability of the processing process, and avoiding the problem of the bridge plate 13 being twisted due to the coaxiality of the rotation center exceeding the tolerance during the rotation process, thereby causing the oil circuit seal of the plate bridge connection to fail and leak. On the other hand, the coaxiality exceeding the tolerance will lead to a large error in the positioning origin of the workpiece, which is easy to cause poor processing.

[0066] Furthermore, weight-reducing holes 191 may be provided on the first positioning plate 21, the second positioning plate 19 and the bridge plate 13, and the weight-reducing holes 191 may reduce the overall weight, save materials and thus reduce costs. In some embodiments, weight-reducing holes 191 may be provided on the first positioning plate 21, the second positioning plate 19 and the bridge plate 13, or one or two of the structures may be provided with weight-reducing holes 191.

[0067] It should also be noted that the fixture assembly 100 of this embodiment can also be suitable for a three-axis vertical machining center. By using a long-stroke three-axis vertical machining center, more modular tooling can be arranged to improve machining efficiency and reduce machining costs.

[0068] Furthermore, the fixture assembly 20 is reduced to a single one, which can be applied to a five-axis machining center, and can realize 360° machining of five sides of the workpiece. Considering the cost of part machining, the machining plan should be selected on a preferential basis.

[0069] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0071] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A clamp assembly, characterized in that: include: A turntable assembly, the turntable assembly comprising: a turntable, a tailstock and a bridge plate, the bridge plate being arranged between the turntable and the tailstock and rotating according to the turntable and the tailstock, at least two groups of positioning assemblies being arranged at intervals on the bridge plate, any one group of the positioning assemblies comprising a plurality of zero point positioners; At least two fixture assemblies, at least two of the fixture assemblies are arranged on the turntable assembly at intervals in the first direction, and the fixture assemblies include: a first positioning plate, a clamping member and a plurality of zero-point positioning pins, the clamping member and the plurality of zero-point positioning pins are respectively arranged on both sides of the first positioning plate in the second direction, the clamping member is used to fix the workpiece, and the plurality of zero-point positioning pins and the plurality of zero-point locators are positioned and matched.

2. The clamp assembly according to claim 1, characterized in that: There are four zero-point positioning pins, which are spaced apart at the edge of the first positioning plate.

3. The clamp assembly according to claim 1, characterized in that: The zero point locator is provided with a locking portion, and the locking portion is used to lock the zero point positioning pin; and, The locking part is one or more of a hydraulic locking part, a pneumatic locking part and a mechanical locking part.

4. The clamp assembly according to claim 1, characterized in that: The clamping part includes: a driving part, a supporting part, a transmission part and a clamping part, one end of the supporting part is arranged on the driving part and the other end is connected to the transmission part, one end of the transmission part is transmission-connected to the driving part and the other end is provided with the clamping part, and the clamping part is used to clamp the workpiece.

5. The clamp assembly according to claim 1, characterized in that: The fixture assembly further includes: a support platform, which is fixed on the first positioning plate, and a side of the support platform away from the first positioning plate is a support surface, and the workpiece is placed on the support surface.

6. The clamp assembly according to claim 1, characterized in that: The clamp assembly further includes: a positioning member, the positioning member is fixed on the first positioning plate, a first positioning portion is provided on a side of the positioning member away from the first positioning plate, and the first positioning portion is used for positioning and cooperating with the workpiece.

7. The clamp assembly according to claim 6, characterized in that: There are at least two positioning members, and at least two positioning members are arranged on the first positioning plate at intervals.

8. The clamp assembly according to claim 1, characterized in that: The turntable assembly further includes: two sliding members, one end of each of the two sliding members is respectively fixed to the two ends of the bridge plate in the first direction, and the other end of each of the two sliding members is respectively slidably connected to the turntable and the tailstock.

9. The clamp assembly according to claim 8, characterized in that: The other end of the sliding member is provided with a sliding protrusion, and the tailstock and the turntable are provided with sliding grooves, and the sliding protrusion and the sliding groove are slidably matched.

10. The clamp assembly according to claim 8, characterized in that: There are a plurality of sliding members, and the plurality of sliding members are arranged at two ends of the bridge plate in the first direction and are spaced apart in the second direction of the bridge plate.

11. The clamp assembly according to claim 1, characterized in that: The bridge plate comprises: a bottom plate and two side plates, the two side plates are arranged at two ends of the bottom plate in a first direction and extend in a second direction, and the two side plates are respectively connected to the turntable and the tailstock.

12. The clamp assembly according to claim 11, characterized in that: The turntable assembly further includes: a first oil separator and a second oil separator, wherein the first oil separator is arranged on the side plate, and the second oil separator is arranged on the bottom plate, wherein a first oil passage connecting the first oil separator and the second oil separator is arranged on the bottom plate.

13. The clamp assembly according to claim 12, characterized in that: The clamp assembly further includes a joint, the second oil distributor is connected to the joint, and the first positioning plate is provided with a second oil passage connecting the joint and the pressing member.

14. The clamp assembly according to claim 1, characterized in that: The turntable assembly also includes: a second positioning plate, the turntable and the tailstock are both fixed on the second positioning plate, and the first positioning plate, and / or the second positioning plate, and / or the bridge plate are provided with weight reduction holes.

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