A multi-process clamping device

Abstract

The application provides a multi-process clamping device, which comprises a first clamping part, a second clamping part and a rotating part; wherein the first clamping part comprises a first pressing assembly and a first cylinder body; the second clamping part comprises a second pressing assembly and a second cylinder body; the rotating part comprises a rotating pressing assembly and a shaft coupling; one side of the shaft coupling is located on the first cylinder body, and the other side is located on the second cylinder body; the rotating pressing assembly penetrates through the shaft coupling, connects the first clamping part and the second clamping part, and rotates the second clamping part through self-rotation to change the relative position of the first pressing assembly and the second pressing assembly. The multi-process clamping device is provided with the rotating part, the second clamping part can be rotated to adapt to different processes, and the effect that one set of clamping device is applicable to two processes is realized.

Description

[0001] This invention application is a divisional application of the parent application "A Flexible Clamp", the application number of which is 2023115167730 and the application date is November 15, 2023. Technical Field

[0002] This invention relates to the field of machining technology, and in particular to a multi-process clamping device. Background Technology

[0003] Currently, there are two common flexible manufacturing methods on the market: FMS (Flexible Manufacturing System) and zero-point quick changeover. These two methods can be combined in the following ways: 1. Multiple machines / processes corresponding to multiple sets of fixtures; 2. A single machine corresponding to multiple sets of fixtures (mother-daughter fixtures / zero-point quick changeover system); 3. Multiple machines sharing a single set of fixtures (traveling pallet / fixture). All three combinations are implemented under the premise that the capacity planning for multiple product varieties is relatively certain and stable. Because of their high initial investment costs and significant risks, they cannot solve the problem of processing multiple product varieties and multiple processes with a single machine and a single set of fixtures, and are especially unsuitable for the early trial production stage.

[0004] With the continuous development of industrial production technology, clamping devices are an indispensable component in machining. Driven by the development of machine tool technology towards high speed, high efficiency, precision, composite, intelligent and environmental protection, clamping device technology is developing towards high precision, high efficiency, modularity, combination, versatility and economy.

[0005] The production characteristics of modern machinery industry are: many varieties, small batches, high precision, and rapid updates. This results in the following shortcomings of traditional clamping devices: a) Small-batch production using advanced processes makes dedicated clamping devices uneconomical, but high-precision and cutting-edge products must use them; b) Current production preparation cycles are long, and clamping devices cannot meet the needs of product updates; c) Rapid product updates lead to stockpiling when using dedicated clamping devices; d) They cannot be applied to multiple processes. Summary of the Invention

[0006] In view of the above-mentioned deficiencies of the prior art, the object of the present invention is to provide a multi-process clamping device, a flexible fixture, and a multi-process flexible clamping method, which can solve at least one of the above-mentioned problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A multi-process clamping device includes a first clamping part (OP10 clamping part), a second clamping part (OP20 clamping part), and a rotating part;

[0009] The OP10 clamping part includes a first pressing assembly (OP10 pressing assembly) and a first cylinder (OP10 cylinder).

[0010] The OP20 clamping part includes a second clamping assembly (OP20 clamping assembly) and a second cylinder (OP20 cylinder).

[0011] The rotating part includes a rotating clamping assembly and a coupling; one side of the coupling is located on the OP10 cylinder body, and the other side is located on the OP20 cylinder body; the rotating clamping assembly passes through the coupling, connects the OP10 clamping part and the OP20 clamping part, and drives the OP20 clamping part to rotate by its own rotation, so as to change the relative position of the OP10 clamping assembly and the OP20 clamping assembly.

[0012] In some embodiments, the rotary clamping assembly includes a rotary clamping transmission unit and a connecting rod; the rotary clamping transmission unit is located inside the OP10 cylinder; the connecting rod passes through the coupling, with one end connected to the rotary clamping transmission unit and the other end connected to the OP20 cylinder.

[0013] In some embodiments, the rotating part further includes a speed regulating component associated with the rotary clamping drive unit for adjusting the movement speed of the rotary clamping drive unit, thereby adjusting the rotation speed of the rotating part.

[0014] In some embodiments, the rotary clamping assembly is a parallel rotary cylinder; the speed regulating assembly is a speed regulating valve, which adjusts the clamping / releasing speed of the parallel rotary cylinder by controlling the hydraulic oil flow rate, so as to achieve smooth rotation of the OP20 clamping part.

[0015] In some implementations, the coupling is an interlocking gear disc.

[0016] In some embodiments, the OP10 clamping assembly includes a first pressure plate piston rod (OP10 pressure plate piston rod) and a first pressure plate (OP10 pressure plate), wherein the OP10 pressure plate piston rod is located within the OP10 cylinder; one end of the OP10 pressure plate piston rod is connected to the OP10 pressure plate, and the OP10 pressure plate piston rod changes the position of the OP10 pressure plate through its reciprocating motion and rotational motion; the OP10 pressure plate is used to clamp the workpiece;

[0017] The OP20 clamping assembly includes a second pressure plate piston rod (OP20 pressure plate piston rod) and a second pressure plate (OP20 pressure plate). The OP20 pressure plate piston rod is located inside the OP20 cylinder. One end of the OP20 pressure plate piston rod is connected to the OP20 pressure plate. The OP20 pressure plate piston rod changes the position of the OP20 pressure plate through its reciprocating motion and rotational motion. The OP20 pressure plate is used to clamp the workpiece.

[0018] In some embodiments, the OP10 clamping assembly further includes a first positioning reference (OP10 positioning reference), a first positioning reference piston rod (OP10 positioning reference piston rod), and a first positioning reference connecting rod (OP10 positioning reference connecting rod); the OP10 positioning reference piston rod and the OP10 positioning reference connecting rod are partially located inside the OP10 cylinder;

[0019] One end of the OP10 positioning reference piston rod is connected to the OP10 positioning reference connecting rod, and the other end is connected to the OP10 positioning reference. The OP10 positioning reference connecting rod drives the OP10 positioning reference piston rod to reciprocate, thereby controlling the position change of the OP10 positioning reference. The OP10 pressure plate and the OP10 positioning reference clamp the workpiece between them to press the workpiece.

[0020] The OP20 clamping assembly also includes a second positioning reference (OP20 positioning reference), and the OP20 pressure plate and the OP20 positioning reference clamp the workpiece between them to clamp the workpiece.

[0021] In some embodiments, the OP10 cylinder body further includes a first gas detection block (OP10 gas detection block), which is associated with the OP10 pressure plate piston rod to detect whether the OP10 pressure plate is fully relaxed; the OP20 cylinder body further includes a second gas detection block (OP20 gas detection block), which is associated with the OP20 pressure plate piston rod to detect whether the OP20 pressure plate is fully relaxed.

[0022] In some implementations, the exterior of the OP10 cylinder block includes:

[0023] The positioning module, used in conjunction with the equipment probe on the machine tool, is used to confirm the position of the multi-process clamping device;

[0024] The first moving drive block can be connected to the machine tool spindle, and the machine tool spindle controls the multi-process clamping device to move in the horizontal plane through the first moving drive block;

[0025] Both the positioning module and the first moving drive block need to face the machine tool spindle.

[0026] In some implementations, the exterior of the OP10 cylinder block includes:

[0027] The second moving drive block can be connected to the machine tool spindle. The machine tool spindle drives the second moving drive block to move up and down, and then controls the reciprocating motion of the OP10 positioning reference through the OP10 positioning reference connecting rod. The second moving drive block needs to face the machine tool spindle.

[0028] The second moving drive block cover plate is disposed on both sides of the second moving drive block to restrict the left and right movement of the second moving drive block.

[0029] The present invention also provides a flexible clamp, the technical solution of which is as follows:

[0030] A flexible clamp includes: a clamp base plate, a two-jaw chuck, a three-jaw chuck, several multi-process clamping devices, and a base plate guide rail;

[0031] The base plate guide rail and the three-jaw chuck are both fixed on the fixture base plate, and the two-jaw chuck and several multi-process clamping devices are disposed on the base plate guide rail and can slide along the base plate guide rail;

[0032] The two-jaw chuck includes two movable jaws and a jaw drive, wherein the jaw drive drives the movable jaws to extend and retract around the jaw drive as the center;

[0033] The three-jaw chuck includes three movable jaws and a jaw drive, wherein the jaw drive drives the movable jaws to extend and retract around the jaw drive as the center;

[0034] The multi-process clamping device includes a clamping part and a rotating part; the clamping part is a first clamping part (OP10 clamping part) and a second clamping part (OP20 clamping part), both of which are equipped with a clamping assembly; the clamping assembly includes a pressure plate piston rod and a pressure plate; wherein, one end of the pressure plate piston rod is connected to the pressure plate, and the position of the pressure plate is changed by its own reciprocating motion and rotational motion; the pressure plate is used to clamp the workpiece; the rotating part includes a rotating clamping assembly and a coupling; one side of the coupling is located at the OP10 clamping part, and the other side is located at the OP20 clamping part; the rotating clamping assembly passes through the coupling, connects the OP10 clamping part and the OP20 clamping part, and drives the OP20 clamping part to rotate by its own rotation, so as to change the relative position of the OP10 clamping part and the OP20 clamping part;

[0035] The two-jaw chuck, the three-jaw chuck, and the multi-process clamping device are each provided with at least one movable drive block. The movable drive block can be connected to the machine tool spindle, so that the machine tool spindle drives each component to move in different directions through the movable drive block.

[0036] In some implementations, the moving drive block is connected to the machine tool spindle via an external moving drive device, so that the machine tool spindle drives the various components to move in different directions via the moving drive device and the moving drive block;

[0037] The moving drive device includes: a positioning block, which contacts the moving drive block and positions the moving drive device at the position of the moving drive block; a cylindrical push rod, which pushes out when the moving drive device is connected to the moving drive block to fill the gap between the two and stabilize the connection between them; and a tool holder, which is connected to the machine tool spindle.

[0038] In some implementations, the two-jaw chuck side, the three-jaw chuck side, and the multi-process clamping device side are all provided with positioning modules, which are used in conjunction with the equipment probes on the machine tool to confirm the position of each component.

[0039] In some embodiments, the multi-process clamping device has a clamping assembly and a guide rail slider at its bottom, both of which contact the base plate guide rail. The guide rail slider facilitates the sliding of the component along the guide rail; the clamping assembly, when locked, restricts the movement of the multi-process clamping device along the guide rail direction; the clamping assembly includes a clamping disc, a clamping block, a clamping disc connecting plate, and a guide rail clamp; one end of the clamping disc connecting plate is connected to the multi-process clamping device, and the other end is used to connect and mount the clamping disc; the clamping disc is located on both sides of the base plate guide rail, and when locked, it further restricts the movement of the component along the guide rail; the clamping block is located on the clamping disc, and its surface is toothed to increase the friction of the clamping disc; the guide rail clamp is used to lock the component to restrict its sliding along the guide rail.

[0040] In some implementations, the bottom of the two-jaw chuck is provided with the guide rail clamp and the guide rail slider, both of which are in contact with the base plate guide rail.

[0041] In some implementations, a hinge structure is provided between the two multi-process clamping devices to adjust the distance between them; the machine tool spindle is connected to the moving drive block on the side of the multi-process clamping device to drive the hinge structure to extend and retract.

[0042] In some implementations, a multi-process clamping device linkage guide rail is provided between the front and rear multi-process clamping devices, passing through both; when the hinge structure extends or retracts, the front and rear multi-process clamping devices slide along the multi-process clamping device linkage guide rail.

[0043] In some embodiments, the base plate guide rail includes a hinge structure linkage guide rail; the hinge point of the hinge structure is fixed on the hinge structure linkage guide rail and can slide along the hinge structure linkage guide rail.

[0044] In some implementations, the chuck drive includes a support rod, a sleeve mounting block, and a linkage mechanism; the sleeve mounting block is located on the outer side of the support rod, and the sleeve mounting block is connected to the linkage mechanism, which in turn connects the movable chuck; a moving drive block is connected to the sleeve mounting block, and the machine tool spindle can drive the sleeve mounting block to move up and down along the support rod via the moving drive block, thereby driving the movable chuck to extend and retract around the support rod via the linkage mechanism.

[0045] In some implementations, the chuck drive further includes several stop elements, which are respectively installed on the upper and lower sides at a certain distance from the expansion sleeve mounting block to limit the movement range of the expansion sleeve mounting block.

[0046] In some implementations, the jaw drive further includes a drive element and an expansion sleeve; the expansion sleeve is installed inside the expansion sleeve mounting block and contacts the support rod; the support rod is a piston rod; the drive element drives the expansion sleeve to grip the support rod and drives the support rod to reciprocate, thereby causing the movable jaw to extend and retract around the support rod to clamp the workpiece.

[0047] In some embodiments, both the two-jaw chuck and the three-jaw chuck further include a chuck body; the chuck body includes a support plate, a base plate, and a chuck plate; the support plate located in a vertical plane and the base plate located in a horizontal plane are connected to each other, serving as a frame to support the two-jaw chuck and the three-jaw chuck; the chuck plate is connected to the support plate and is used to place the movable jaws; the chuck plate is provided with jaw cover plates of the same number as the movable jaws, used to restrict the up-and-down movement of the movable jaws.

[0048] In some implementations, the chuck drive further includes an oil guide rod, which is located between the base plate and the chuck plate, passes through the expansion sleeve mounting block, and guides oil into the expansion sleeve mounting block to drive the expansion sleeve to clamp.

[0049] In some implementations, the movable jaw is a mother-daughter jaw structure, with the mother jaw fixed to the chuck plate, and the jaw drive causing the daughter jaw to extend and retract along the mother jaw with the jaw drive as the center.

[0050] This invention also provides a multi-stage flexible clamping method, the technical solution of which is as follows:

[0051] A multi-stage flexible clamping method is implemented using a flexible fixture with multiple clamping devices, wherein the clamping devices include a multi-jaw chuck and a multi-stage clamping mechanism. The implementation steps of the multi-stage flexible clamping method include:

[0052] S1 compares the external structure of different types of workpieces, identifies common features, and determines a unified positioning and clamping method.

[0053] S2 unifies the process reference between different types of workpieces, and the required process reference is determined according to the highest process reference among different types of parts.

[0054] S3 adjusts the position of the clamping device for workpieces of different specifications;

[0055] S4 is controlled by a digital control program for loading and unloading operations:

[0056] S41 Switches the clamping component of the multi-process clamping device according to the required process and adjusts the position of the multi-process clamping device:

[0057] The clamping assembly switching steps are as follows: The clamping assembly of the multi-process clamping device is divided into a first clamping assembly (OP10 clamping assembly) and a second clamping assembly (OP20 clamping assembly); when it is necessary to clamp the workpiece of the first process (process 10), the clamping surface of the OP10 clamping assembly is parallel to the workpiece to be clamped position, and the clamping surface of the OP20 clamping assembly is not parallel to the workpiece to be clamped position; when it is necessary to clamp the workpiece of the second process (process 20), the OP20 clamping assembly rotates around the OP10 clamping assembly so that the clamping surface of the OP20 clamping assembly is parallel to the workpiece to be clamped position and higher than the clamping surface of the OP10 clamping assembly;

[0058] S42 loading:

[0059] S43 material feeding.

[0060] In some implementations, step S3 is divided into:

[0061] S31 automatically calls the digital control program based on the workpiece's parameter information to adjust the position of the clamping device's positioning module;

[0062] The equipment probes on the S32 machine tool confirm the position of each clamping device positioning module, and feed back the positioning module of the clamping device that has not reached the designated position to the digital control program, which then adjusts its position again.

[0063] S33 repeats step S32 until all clamping device positioning modules reach the designated position, and then feeds the result back to the digital control program.

[0064] In some implementation schemes,

[0065] S42 loading:

[0066] Adjust the extension and retraction of the jaws of the multi-jaw chuck according to the workpiece parameters to adjust the pre-clamping diameter, and further eliminate the gap between the jaws and the workpiece.

[0067] The position of the clamping component of the multi-process clamping device is adjusted according to the workpiece parameters to clamp the workpiece;

[0068] S43 material cutting:

[0069] Adjust the position of the clamping component of the multi-process clamping device according to the workpiece parameters to release the workpiece;

[0070] Eliminate the gap between the jaws and the workpiece, and adjust the extension and retraction of the jaws of the multi-jaw chuck according to the workpiece parameters to release the workpiece.

[0071] In some implementations, the step of adjusting the position of the multi-process clamping device in S41 is as follows: the digital control program is automatically invoked according to the parameter information of the workpiece to adjust the position of the positioning module of the multi-process clamping device; the equipment probe on the machine tool confirms the position of the positioning module of the multi-process clamping device, and feeds back the positioning module of the multi-process clamping device that has not reached the designated position to the digital control program, and the digital control program adjusts its position again; the previous step is repeated until all the required multi-process clamping device positioning modules have reached the designated position, and the result is fed back to the digital control program.

[0072] Beneficial effects:

[0073] The multi-process clamping device provided by the present invention is equipped with a rotating part, which can rotate the OP20 clamping part to adapt to different processes, thus achieving the effect of one clamping device being applicable to two processes.

[0074] The flexible fixture provided by this invention is equipped with a movable two-jaw chuck and a multi-process clamping device. In addition, the two-jaw chuck and the three-jaw chuck can adjust the clamping diameter of the jaws, and the multi-process clamping device can also adjust the position of its pressure plate. This enables the use of the same set of flexible fixtures to process different types of workpieces, reducing investment costs and risks. It is especially suitable for the early trial production stage.

[0075] The multi-process flexible clamping method provided by this invention can achieve the technical effect of using the same set of flexible fixtures to process different types of workpieces by adjusting the position of the clamping device, thereby reducing investment costs and risks, and is especially suitable for the early trial production stage. Attached Figure Description

[0076] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0077] Figure 1 This is the main view of the flexible fixture (OP10 state).

[0078] Figure 2 This is a top view of the flexible fixture (OP10 state).

[0079] Figure 3 This is the main view of the flexible fixture (OP20 state).

[0080] Figure 4 This is a top view of the flexible fixture (OP20 state).

[0081] Figure 5 This is the left view of the flexible fixture (OP20 state).

[0082] Figure 6 This is a 3D view of a multi-process clamping device (OP10 state).

[0083] Figure 7 This is a partial exploded view of the multi-process clamping device (OP10 state).

[0084] Figure 8 This is the main view of the multi-process clamping device (OP10 state).

[0085] Figure 9 This is a left view of the multi-process clamping device (OP10 state).

[0086] Figure 10 This is a top view of the multi-process clamping device (OP10 state).

[0087] Figure 11 This is the right view of the multi-process clamping device (OP10 state).

[0088] Figure 12 Is with Figure 8 The corresponding cross-sectional view AA.

[0089] Figure 13 Is with Figure 10 The corresponding cross section BB.

[0090] Figure 14 Is with Figure 10 The corresponding cross section CC.

[0091] Figure 15 This is a 3D view of a multi-process clamping device (OP20 state).

[0092] Figure 16 This is a partial exploded view of the multi-process clamping device (OP20 state).

[0093] Figure 17 This is the main view of the multi-process clamping device (OP20 state).

[0094] Figure 18 This is a top view of the multi-process clamping device (OP20 state).

[0095] Figure 19 Is with Figure 17 The corresponding cross-sectional view AA.

[0096] Figure 20 Is with Figure 18 The corresponding cross-sectional view BB.

[0097] Figure 21 This is a schematic diagram of the hinged structure of a multi-process clamping device.

[0098] Figure 22 It is a 3D diagram of a two-jaw chuck.

[0099] Figure 23 This is the main view of a two-jaw chuck.

[0100] Figure 24 This is a left view of a two-jaw chuck.

[0101] Figure 25 This is a top view of a two-jaw chuck.

[0102] Figure 26 Is with Figure 25 The corresponding cross-sectional view AA.

[0103] Figure 27 It is a 3D diagram of a three-jaw chuck.

[0104] Figure 28 This is the main view of a three-jaw chuck.

[0105] Figure 29 This is a left view of a three-jaw chuck.

[0106] Figure 30 This is a top view of a three-jaw chuck.

[0107] Figure 31 Is with Figure 30 The corresponding cross-sectional view AA.

[0108] Figure 32 It is a 3D view of the mobile drive device.

[0109] Figure 33 This is the main view of the mobile drive unit.

[0110] Figure 34 Is with Figure 33 The corresponding cross-sectional view AA.

[0111] 1. Multi-process clamping device; 11. OP10 clamping part; 111. OP10 pressure plate piston rod; 112. OP10 pressure plate; 113. OP10 pressure plate pressing point; 114. OP10 positioning reference; 115. OP10 positioning reference piston rod; 116. OP10 positioning reference connecting rod; 117. OP10 pressure plate nut; 118. OP10 air detection block; 119. Second moving drive block cover plate; 110. Dustproof cover plate; 12. OP20 clamping part; 121. OP20 pressure plate piston rod. 122. OP20 pressure plate; 123. OP20 positioning reference; 124. OP20 pressure plate nut; 125. OP20 air detection block; 126. Rotary clamping transmission unit connecting block; 131. Rotary clamping transmission unit; 132. Connecting rod; 133. Coupling; 134. Speed ​​regulating component; 14. Hinge structure; 15. Hinge point; 16. Connecting block; 17. Connecting plate; 2a. Two-jaw chuck; 2b. Three-jaw chuck; 211. Male jaw; 212. Female jaw; 221. Support plate; 222. Base plate; 22 3. Chuck plate; 224. T-block; 231. Support rod; 232. Expansion sleeve mounting block; 233. Linkage mechanism; 234. Stop element; 235. Oil guide rod; 236. Drive element; 237. Jaw cover plate; 311. Clamping disc; 312. Clamping block; 313. Clamping disc connecting plate; 314. Guide rail clamp; 32. Guide rail slider; 4. Base plate guide rail; 41. Multi-process clamping device X-axis guide rail; 42. Hinge structure linkage guide rail; 43. Two-jaw chuck X-axis guide rail; 5. Fixture base plate; 6. Moving... Drive unit, 61. Positioning block, 62. Cylindrical push rod, 63. Tool holder, 64. Cylindrical pin, 65. Equal height bolt, 66. O-ring, 67. Washer ring, 68. Flange nut, 69. Drive unit body, 7. Multi-process clamping device linkage guide rail, 81. Positioning module, 82. Equipment probe, 83. Positioning device, 9. Moving drive block, 9a. First moving drive block, 9b. Second moving drive block, 101. Expansion sleeve, 102. Threaded plug, 103. Spring, 104. Oil pipe joint, 105. Bushing.

[0112] Note: OP10 refers to process 10, and OP20 refers to process 20. It should be noted that the process numbers are for illustrative purposes only and do not have any limiting effect. Detailed Implementation

[0113] To make the technical problem to be solved, the technical solution, and the beneficial effects of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0114] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily intended to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "including," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0115] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0116] One embodiment of the present invention, such as Figures 1-5 As shown, a flexible fixture includes: a fixture base plate 5, a positioning device 83, a clamping device (two-jaw chuck 2a, three-jaw chuck 2b, several multi-process clamping devices 1) and a base plate guide rail 4. In this embodiment, four multi-process clamping devices 1 are symmetrically arranged at the four corners of the fixture.

[0117] like Figures 1-5 As shown, the base plate guide rail 4 and the three-jaw chuck 2b are both fixed on the fixture base plate 5. The base plate guide rail 4 is divided into a multi-process clamping device X-axis guide rail 41, a hinged structure linkage guide rail 42, and a two-jaw chuck X-axis guide rail 43. Four multi-process clamping devices 1 are mounted on the multi-process clamping device X-axis guide rail 41, and the two-jaw chuck 2a is mounted on the two-jaw chuck X-axis guide rail 43 and can slide along the corresponding guide rail. The positioning device 83 is equipped with a positioning module 81.

[0118] like Figures 6-21 As shown (not shown in the figure, the clamping assembly, guide rail clamp 314, and guide rail slider 32 located at the bottom of the multi-process clamping device 1 and interacting with the X-guide rail 41 of the multi-process clamping device), the multi-process clamping device 1 includes an OP10 clamping part 11, an OP20 clamping part 12, and a rotating part.

[0119] like Figure 6 , 9 The OP10 clamping part 11 includes an OP10 clamping assembly and an OP10 cylinder.

[0120] The OP10 clamping assembly includes an OP10 pressure plate piston rod 111, an OP10 pressure plate 112, an OP10 positioning reference 114, an OP10 positioning reference piston rod 115, and an OP10 positioning reference connecting rod 116. The OP10 pressure plate piston rod 111, the OP10 positioning reference piston rod 115, and the OP10 positioning reference connecting rod 116 are partially located within the OP10 cylinder body; for example... Figure 14 One end of the OP10 pressure plate piston rod 111 is connected to the OP10 pressure plate 112. The OP10 pressure plate piston rod 111 controls the up-and-down movement of the OP10 pressure plate 112 along the Y-axis and its rotation around the Y-axis through its own reciprocating and rotational movements. The OP10 pressure plate 112 is provided with OP10 pressure plate pressing points 113; Figure 13 One end of the OP10 positioning reference piston rod 115 is connected to the OP10 positioning reference connecting rod 116, and the other end is connected to the OP10 positioning reference 114. The other end of the OP10 positioning reference connecting rod 116 is connected to the second moving drive block 9b located outside the OP10 cylinder. The machine tool spindle drives the moving drive device 6, inserts the moving drive device 6 into the second moving drive block 9b, and adjusts the Y-axis position of the OP10 positioning reference piston rod 115 through the OP10 positioning reference connecting rod 116, thereby controlling the Y-axis position of the OP10 positioning reference 114. The OP10 pressure plate pressure point 113 and the OP10 positioning reference 114 clamp the workpiece between them to restrict the movement of the workpiece.

[0121] like Figure 9 As shown, the OP10 clamping assembly also includes an OP10 pressure plate nut 1117 for locking the OP10 pressure plate and the OP10 pressure plate piston rod, a threaded plug 102 for sealing the two piston rods, and an expansion sleeve 101 for clamping and fixing the OP10 positioning reference piston rod.

[0122] like Figure 14 The OP10 cylinder body also includes an OP10 air detection block 118, which is associated with the OP10 pressure plate piston rod 111 to detect whether the OP10 pressure plate 112 is fully relaxed. Specifically, when the OP10 pressure plate piston rod 111 is not fully relaxed, the OP10 air detection block 118 is under force, and the spring 103 is in a compressed state; when the OP10 pressure plate piston rod 111 is fully relaxed, the OP10 air detection block 118 is not under force and extends towards the OP10 pressure plate piston rod 111, and the spring 103 is in an extended state.

[0123] like Figure 9 The OP10 cylinder body externally includes a positioning module 81, two moving drive blocks 9 (divided into a first moving drive block 9a and a second moving drive block 9b according to their functions), and a second moving drive block cover plate 119. The positioning module 81 is connected to the positioning device 83, the positioning module 81 on the positioning device 83, and the equipment probe 82 on the machine tool. Figure 2The positioning module 81 and the first and second moving drive blocks 9a are used together to confirm the position of the multi-process clamping device. The first moving drive block 9a can be connected to the machine tool spindle through the moving drive device 6. The machine tool spindle controls the multi-process clamping device 1 to move along the X-guide rail 41 of the multi-process clamping device through the first moving drive block 9a. The function of the second moving drive block 9b is as described above. The second moving drive block cover plate 119 is provided on both sides of the second moving drive block 9b to restrict the left and right movement of the second moving drive block 9b. The positioning module 81 and the first and second moving drive blocks 9a and 9b must all face the machine tool spindle.

[0124] like Figure 6 The OP10 cylinder body is also equipped with a dust cover 110 for sealing the cylinder body and preventing dust from entering, and an oil pipe connector 104 for conveying oil, with one end connected to the oil pipe connection plate and the other end connected to the oil pipe.

[0125] like Figure 15 The OP20 clamping assembly includes an OP20 pressure plate piston rod 121, an OP20 pressure plate 122, and an OP20 positioning reference 123. For example... Figure 20 The piston rod 121 of the OP20 pressure plate is located inside the OP20 cylinder. One end of the piston rod 121 is connected to the OP20 pressure plate 122. The piston rod 121 controls the up-and-down movement of the OP20 pressure plate 122 along the Y-axis and the rotation around the Y-axis through its own reciprocating and rotational movements. The OP20 pressure plate 122 and the OP20 positioning reference 123 clamp the workpiece between them to restrict the movement of the workpiece.

[0126] like Figure 15 , 20 The OP20 clamping assembly also includes an OP20 pressure plate nut 124 for locking the OP20 pressure plate and the OP20 pressure plate piston rod, and a threaded plug 102 for sealing the two piston rods.

[0127] like Figure 20 The OP20 cylinder body also includes an OP20 air detection block 125, which is associated with the OP20 pressure plate piston rod 121 to detect whether the OP20 pressure plate 122 is fully relaxed. Specifically, when the OP20 pressure plate piston rod 121 is not fully relaxed, the OP20 air detection block 125 is under force, and the spring is in a compressed state; when the OP20 pressure plate piston rod is fully relaxed, the OP20 air detection block 125 is not under force, extends towards the OP20 pressure plate piston rod 121, and the spring is in an extended state.

[0128] like Figure 6 , 12The multi-process clamping device 1 is also equipped with a clamping assembly and a guide rail slider 32 at its bottom. The connecting plate at the bottom of the OP10 cylinder body is used to connect the OP10 cylinder body, the clamping assembly, and the guide rail slider 32. The guide rail slider 32 facilitates the sliding of each component of the clamping part along the guide rail; when the clamping assembly is locked, it can restrict the movement of the multi-process clamping device along the X-axis guide rail of the multi-process clamping device; the clamping assembly includes a clamping plate 311, a clamping block 312, a clamping plate connecting plate 313, and a guide rail clamp 314. The clamping plate 313 is connected at one end to the bottom of the multi-process clamping device 1, and at the other end to the clamping plate 311. The clamping plate 311 is located on both sides of the X-axis guide rail 41 of the multi-process clamping device, and can further restrict the movement of the multi-process clamping device 1 along the X-axis guide rail 41 when locked. The clamping block 312 is located on the clamping plate 311, and its surface is toothed to increase the friction of the clamping plate 311. The guide rail clamp 314 is used to lock the multi-process clamping device 1 to restrict the sliding of the multi-process clamping device 1 along the X-axis guide rail 41. Figure 2 ).

[0129] like Figure 21 As shown, a hinge structure 14 is also provided between the two multi-process clamping devices 1, and the two ends of the hinge structure 14 are respectively connected to the OP10 cylinder of the two multi-process clamping devices 1. Figure 21 To clearly show the hinge structure 14, the image angle was adjusted, therefore the connection relationship between the hinge structure 14 and the OP10 cylinder body is not shown. This allows the two multi-process clamping devices 1 to extend and retract along the Z-axis, thereby adjusting the position of the multi-process clamping devices 1 in the Z-axis direction. The hinge point 15 of the hinge structure 14 is fixed to the hinge structure linkage guide rail 42 in the base plate guide rail 4 via the connecting plate 17, and can slide along the hinge structure linkage guide rail 42. The hinge structure linkage guide rail 42 is also equipped with a guide rail slider 32 to facilitate the movement of the hinge point 15. The hinge structure linkage guide rail 42 is fixed to the fixture base plate 5 via a connecting block. The two multi-process clamping devices 14 can extend and retract along the Z-axis, thereby adjusting the position of the multi-process clamping devices 1 in the Z-axis direction. A multi-process clamping device linkage guide rail 7 is also provided through the clamping device 1, and similar to the bottom of the multi-process clamping device 1, it is also equipped with clamping components and guide rail sliders 32. When the hinge structure 14 extends or retracts, the two multi-process clamping devices 1 slide back and forth along the multi-process clamping device linkage guide rail 7. The machine tool spindle is connected to the first moving drive block 9a on the side of the multi-process clamping device 1 through the moving drive device 6, driving the two multi-process clamping devices 1 to slide along the multi-process clamping device linkage guide rail 7, that is, to extend or retract along the Z-axis direction. At the same time, the hinge point 15 of the hinge structure slides in the X direction along the hinge structure linkage guide rail 42. The multi-process clamping device linkage guide rail 7 and the multi-process clamping device X-axis guide rail 41 are at different heights. In some embodiments, the multi-process clamping device linkage guide rail 7 and the multi-process clamping device X-axis guide rail 41 can also be set on the fixture base plate 5 and at the same height.

[0130] In some embodiments, the flexible fixture has three multi-process clamping devices, with two multi-process clamping devices on one side and only one multi-process clamping device on the other side. In this case, the independent multi-process clamping device does not have a hinge structure and does not need to move along the Z-axis direction. Alternatively, a Z-axis bottom plate guide rail can be provided on the fixture base plate to allow the multi-process clamping device to move along the Z-axis bottom plate guide rail.

[0131] like Figures 7-19 As shown, the rotating part includes a rotary clamping assembly, a coupling 133, and a speed regulating assembly 134. Figure 7 16. In this embodiment, the coupling 133 is an end-face gear that can mesh and clamp. One side of the coupling 133 (one toothed disc of the end-face gear) is located in the OP10 cylinder body, and the other side (the other toothed disc of the end-face gear) is located in the OP20 cylinder body. The rotary clamping assembly includes a rotary clamping transmission unit 131 and a connecting rod 132. The rotary clamping transmission unit 131 is located in the OP10 cylinder body. The connecting rod 132 passes through the coupling 133, with one end connected to the rotary clamping transmission unit 131 and the other end connected to the OP20 cylinder body. It drives the OP20 clamping part 12 to rotate by its own rotation, thereby changing the relative position of the OP10 clamping assembly and the OP20 clamping assembly. The speed regulating assembly 134 is associated with the rotary clamping transmission unit 131 and is used to regulate the movement speed of the rotary clamping transmission unit 131, thereby regulating the rotation speed of the rotating part. The rotary clamping transmission unit connecting block 126 connects the rotary clamping transmission unit 131 and the OP10 cylinder body together. In this embodiment, the rotary clamping transmission unit 131 is a parallel rotary cylinder, while in other embodiments it can be a parallel rotary air cylinder or the like; the speed regulating component 134 is a speed regulating valve, which adjusts the clamping / releasing speed of the parallel rotary cylinder by controlling the hydraulic oil flow rate, so as to achieve smooth rotation of the OP20 clamping part 12.

[0132] In OP10 state ( Figures 6-14 When the OP20 pressure plate piston rod 121 is in a horizontal state, the parallel rotary cylinder is released and the two gear discs of the gear disk separate. When it is necessary to switch to the OP20 state, the parallel rotary cylinder drives the connecting rod 132 and the gear disk to rotate, so that the OP20 clamping part 12 rotates upward by 90° (there may be a deviation of ±0.005°, which is determined by the tooth groove clearance of the gear disk and can be adjusted as needed) until the OP20 pressure plate piston rod 121 is in a vertical state. Then the parallel rotary cylinder clamps and the gear discs mesh and hold each other tightly. At this time, the multi-process clamping device 1 is in the OP20 state.

[0133] When switching from OP20 to OP10 ( Figures 15-21Release the parallel rotating cylinder, separate the meshing gear discs, and the connecting rod and gear disc rotate around. Rotate the OP20 clamping part 12 downward by 90° (again, the deviation is determined by the tooth groove clearance of the gear disc and can be adjusted as needed) until the OP20 pressure plate piston rod 121 is in a horizontal state. At this time, the multi-process clamping device 1 returns to the OP10 state.

[0134] In some embodiments, the rotation angle of the OP20 clamping part is not limited to 90°, but can be adjusted according to processing needs, such as rotating 30°, 60°, 120°, etc.

[0135] like Figures 22-26 As shown, the two-jaw chuck 2a includes two movable jaws, a jaw drive, and a chuck body. The jaw drive drives the two movable jaws to extend and retract around the jaw drive as the center.

[0136] like Figure 22 , 23 The chuck body includes a support plate 221, a base plate 222, a chuck plate 223, a positioning module 81, and a T-block 224. The support plate 221, located in a vertical plane, and the base plate 222, located in a horizontal plane, are connected to each other, forming a frame to support the two-jaw chuck 2a. The chuck plate 223 is connected to the support plate 221 and is used to house the movable jaws. The chuck plate 223 has jaw cover plates 237, the same number as the movable jaws, to restrict the vertical movement of the movable jaws. The positioning module 81, also known as the zero-point confirmation block, is located on the support plate 221 and is connected to the positioning device 83, the positioning module 81 on the positioning device 83, and the equipment probe 82 on the machine tool. Figure 2 Used in conjunction with the two-jaw chuck 2a to confirm the position of the two-jaw chuck 2a; the T-block 224 is set on the base plate to connect and install the corresponding components.

[0137] The chuck body also includes an oil pipe fitting 104 for connecting an oil pipe to deliver oil.

[0138] like Figure 24 , 26The chuck drive includes a support rod 231, a sleeve mounting block 232, a linkage mechanism 233, a moving drive block 9, several stop elements 234, an oil guide rod 235, a drive element 236, and a sleeve. A sleeve mounting block 232 is provided on the outer side of the support rod. The sleeve is installed inside the sleeve mounting block 232 and contacts the support rod 231. The sleeve mounting block 232 is connected to the linkage mechanism 233, which in turn connects to the movable chuck. The moving drive block 9 is connected to the sleeve mounting block 232. The machine tool spindle can drive the sleeve mounting block 232 to move up and down along the support rod 231 via the moving drive device 6 connected to the moving drive block 9. This, in turn, drives the movable chuck to extend and retract around the support rod 231 via the linkage mechanism 233 to adjust the pre-clamping diameter of the two-jaw chuck. Furthermore, the machine tool spindle can also drive the two-jaw chuck 2a to move along the two-jaw chuck X-guide rail 43 via the moving drive device. Figure 2 In this embodiment, the stop element 234 is a stop screw, and several stop screws are respectively installed between the T-block 224 and the chuck plate 223. By limiting the range of motion of the expansion sleeve mounting block 231, the travel of the movable jaw of the two-jaw chuck 2a is hard-limited. The support rod 231 is a piston rod. The drive element 236 (a square oil cylinder in this embodiment) drives the expansion sleeve to hug the support rod 231 and drives the support rod 231 to reciprocate, thereby driving the movable jaw to extend and retract around the support rod 231, eliminating the gap between the movable jaw and the workpiece to clamp the workpiece. The oil guide rod 235 is located between the T-block 224 and the chuck plate 223 on the base plate 222, passes through the expansion sleeve mounting block 232, guides oil into the expansion sleeve mounting block 232, and drives the expansion sleeve to hug.

[0139] The chuck drive also includes a bushing 105 and a threaded plug 102 for sealing the piston rod.

[0140] like Figure 23 The bottom of the two-jaw chuck 2a is also provided with a guide rail clamp 314 and a guide rail slider 32, both of which contact the X-axis guide rail 43 of the two-jaw chuck. The guide rail slider 32 facilitates the sliding of the two-jaw chuck 2a along the X-axis guide rail 43, and the guide rail clamp 314 is used to lock the two-jaw chuck 2a to limit the sliding of the two-jaw chuck 2a along the X-axis guide rail 43. Figure 2 ).

[0141] like Figures 27-31 As shown, the three-jaw chuck 2b includes three movable jaws, a jaw drive, and a chuck body. The jaw drive drives the three movable jaws to extend and retract around the jaw drive as the center.

[0142] like Figure 27 , 28The chuck body and jaw drive of the three-jaw chuck 2b are similar to those of the two-jaw chuck, except that (1) the chuck body does not have an oil pipe joint; (2) the bottom of the three-jaw chuck 2b does not have a guide rail clamp 314 and a guide rail slider 32, but is directly fixed to the fixture base plate 5 by a positioning plate and screws. Therefore, the machine tool spindle can only drive the expansion sleeve mounting block 232 to move up and down along the support rod 231 by connecting the moving drive device 6 to the moving drive block 9, and then drive the movable jaw to extend and retract around the support rod 231 through the linkage mechanism 233 to adjust the pre-clamping diameter of the three-jaw chuck 2b. It cannot drive the three-jaw chuck 2b to move in the X direction along the corresponding guide rail.

[0143] In this embodiment, the movable jaws of the two-jaw chuck 2a and the three-jaw chuck 2b are of a mother-daughter jaw structure. The mother jaw 212 is fixed on the chuck plate 223, and the jaw drive drives the daughter jaw 211 to extend and retract along the mother jaw 212 with the jaw drive as the center. In some embodiments, the movable jaws may be an integral structure.

[0144] like Figure 4 The external moving drive device 6, connected to the machine tool spindle, enables the machine tool spindle to drive the various components of the fixture to move in different directions via the moving drive device 6 and the moving drive block 9. For example... Figure 34 The mobile drive device 6 includes: a positioning block 61, which contacts the mobile drive block and positions the mobile drive device at the position of the mobile drive block; a cylindrical push rod 62, which pushes out to fill the gap between the two when the mobile drive device is connected to the mobile drive block, so as to stabilize the connection between the two; a tool holder 63, which is connected to the machine tool spindle; a cylindrical pin 64, which fixes the cylindrical push rod; an equalizing bolt 65, which fixes the positioning block; an O-ring 66, a washer 67, and a flange nut 68, which seal and fasten the cylindrical push rod; and a drive device body 69, which serves as a load-bearing component.

[0145] In some implementations, the machine tool can be directly connected to the fixture components via a moving drive block, without the need for a moving drive device.

[0146] Another embodiment of the present invention combines the above-described method of using a flexible fixture (note that some steps are not in any particular order and are described below for ease of reading). This method allows for the processing of multiple types of workpieces and multiple processes using only one machine and one set of fixtures. The method includes two aspects. The first aspect is for multiple types of workpieces, and its implementation method is as follows:

[0147] During process 10:

[0148] S1 compares the external structures of different types of workpieces, identifies common features, and determines a unified positioning and clamping method;

[0149] S2 unifies the process reference between different types of workpieces, and the required process reference is determined according to the highest process reference among different types of parts.

[0150] S3 adjusts the position of the clamping device for workpieces of different specifications (assuming the designated position of the two multi-process clamping devices 1 on the X+ side is A1, the designated position of the two multi-process clamping devices 1 on the X- side is A2, and the designated position of the two-jaw chuck 2a is C):

[0151] a. All clamping devices are in a disabled (relaxed) state to ensure that the multi-process clamping device 1 and the two-jaw chuck 2a can move normally in the X / Y / Z directions;

[0152] b. Use the machine tool spindle to drive the moving drive device 6, insert the moving drive device 6 into the moving drive block (first moving drive block 9a) of the multi-process clamping device on the X+ side, drive the multi-process clamping device 1 to move along the bottom plate guide rail 4X direction, and at the same time drive the hinge structure 14 of the multi-process clamping device to extend and retract to adjust the Z-axis position of the two multi-process clamping devices 1 in the Z direction, and finally move to position A1. Insert the moving drive device 6 into the moving drive block 9 of the two-jaw chuck 2a, drive the multi-process clamping device 1 to move along the bottom plate guide rail 4X direction, move to position C, and lock the 6 guide rail clamps 314 and 24 clamping plates 311 (each multi-process clamping device is provided with 2 guide rail clamps and 12 clamping plates, and the two-jaw chuck is provided with two guide rail clamps);

[0153] c. Use the equipment probe 82 to detect the position of the positioning module 81 to determine whether the multi-process clamping device 1 on the X+ side has reached the designated position A1 and whether the two-jaw chuck 2a has reached the position C: (1) Correct, proceed to step d; (2) Incorrect, release the 6 guide rail clamps 314 and 24 clamping discs 311 in step b, and repeat step b until the multi-process clamping device 1 on the X+ side and the two-jaw chuck 2a reach the designated positions A1 and C respectively.

[0154] d. Using the machine tool spindle to drive the moving drive device 6, insert the moving drive device 6 into the moving drive block (first moving drive block 9a) of the multi-process clamping device 1 on the X-side, driving the multi-process clamping device 1 to move along the base plate guide rail 4X direction, and simultaneously driving the hinge structure 14 of the multi-process clamping device to extend and retract to adjust the Z-axis position of the two multi-process clamping devices 1 in the Z direction, finally moving to position A2. Lock the four guide rail clamps 314 and the 24 clamping discs 311;

[0155] e. Use the equipment probe 82 to detect the position of the positioning module 81 to determine whether the multi-process clamping device 1 on the X-side has reached the specified position A2: (1) Correct, proceed to step f; (2) Incorrect, release the 4 guide rail clamps 314 and 24 clamping discs 311 in step d, and repeat step d until the specified position A2 is reached.

[0156] S4 is controlled by a digital control program for loading and unloading operations:

[0157] a, Loading materials

[0158] b. After loading, clamp the workpiece: Use the machine tool spindle to drive the moving drive device 6, and insert the moving drive device 6 into the moving drive block 9 of the two-jaw chuck 2a and the three-jaw chuck 2b in sequence. Drive the expansion sleeve mounting block 232 to move up and down along the support rod 231. Then, through the linkage mechanism 233, drive the movable jaw to extend and retract around the support rod 231 to adjust the pre-clamping diameter of the two-jaw chuck 2a and the three-jaw chuck 2b. Then, the drive element 236 (a square oil cylinder in this embodiment) drives the expansion sleeve 101 to hug the support rod 231 and drives the support rod 231 to reciprocate, thereby driving the movable jaw to extend and retract around the support rod 231 to eliminate the gap between the movable jaw and the workpiece and clamp the workpiece. The machine tool spindle drives the moving drive device 6, which is then inserted into the moving drive block (second moving drive block 9b) of the multi-process clamping device 1 on the X+ / - side. The OP10 positioning reference piston rod 115 is adjusted and the position of the OP10 positioning reference Y-axis 114 is controlled by the OP10 positioning reference connecting rod 116. The hydraulic oil drives the OP10 pressure plate piston rod 111 to generate its own reciprocating motion and rotational motion, thereby controlling the up-and-down movement of the OP10 pressure plate 112 along the Y-axis and its rotation around the Y-axis. The OP10 pressure plate 112 is provided with OP10 pressure plate pressure point 113. The OP10 pressure plate pressure point 113 and the OP10 positioning reference 114 clamp the workpiece between them to restrict the movement of the workpiece.

[0159] c. Loosening the workpiece before unloading: The drive element 236 (a square hydraulic cylinder in this embodiment) of the two-jaw chuck 2a and the three-jaw chuck 2b drives the support rod 231 to reciprocate, thereby causing the movable jaw to extend and retract around the support rod 231, re-establishing the gap between the movable jaw and the workpiece to loosen the workpiece, and the expansion sleeve 101 loosens the support rod 231. The machine tool spindle drives the moving drive device 6, which is inserted into the moving drive block 9 of the two-jaw chuck 2a and the three-jaw chuck 2b in sequence, causing the expansion sleeve mounting block 232 to move up and down along the support rod 231, and then, through the linkage mechanism 233, causes the movable jaw to retract around the support rod 231 to reduce the pre-clamping diameter of the two-jaw chuck 2a and the three-jaw chuck 2b to facilitate unloading. As in step b, adjust the position changes of the OP10 pressure plate pressure point 113 and the OP10 positioning reference 114 to loosen the workpiece.

[0160] d. Feeding.

[0161] In process 20, the adjustment steps are similar to those in process 10, with the following differences:

[0162] S4 is controlled by a digital control program for loading and unloading operations:

[0163] a, Loading materials

[0164] b. After loading, clamp the workpiece: Use the machine tool spindle to drive the moving drive device 6, and insert the moving drive device 6 into the moving drive block 9 of the two-jaw chuck 2a and the three-jaw chuck 2b in sequence. Drive the expansion sleeve mounting block 232 to move up and down along the support rod 231. Then, through the linkage mechanism 233, drive the movable jaw to extend and retract around the support rod 231 to adjust the pre-clamping diameter of the two-jaw chuck 2a and the three-jaw chuck 2b. Then, the drive element 236 (a square oil cylinder in this embodiment) drives the expansion sleeve 101 to hug the support rod 231 and drives the support rod 231 to reciprocate, thereby driving the movable jaw to extend and retract around the support rod 231 to eliminate the gap between the movable jaw and the workpiece and clamp the workpiece. Hydraulic oil drives the piston rod 121 of the OP20 pressure plate to generate its own reciprocating motion and rotational motion, thereby controlling the up-and-down movement of the OP20 pressure plate 122 along the Y-axis and its rotation around the Y-axis; the position change of the OP20 pressure plate 122 cooperates with the OP20 positioning reference 123 to clamp the workpiece.

[0165] c. Loosening the workpiece before unloading: The drive element 236 (a square hydraulic cylinder in this embodiment) of the two-jaw chuck 2a and the three-jaw chuck 2b drives the support rod 231 to reciprocate, thereby causing the movable jaw to extend and retract around the support rod 231, re-establishing the gap between the movable jaw and the workpiece to release the workpiece. The expansion sleeve 101 releases the support rod 231. The machine tool spindle drives the moving drive device 6, which is inserted into the moving drive block 9 of the two-jaw chuck 2a and the three-jaw chuck 2b in sequence. This causes the expansion sleeve mounting block 232 to move up and down along the support rod 231, and then, through the linkage mechanism 233, causes the movable jaw to retract around the support rod 231 to reduce the pre-clamping diameter of the two-jaw chuck 2a and the three-jaw chuck 2b to facilitate unloading. Adjust the OP20 pressure plate 122 as in step b to loosen the workpiece.

[0166] Another aspect addresses the requirements of multi-process manufacturing, and the implementation method is as follows:

[0167] 1. When machining operation OP20 (process 20) is required, first switch the multi-process clamping device 1 to the OP20 state, then move it to the designated position. The movable devices of the flexible fixture can be moved as needed, following the same process as described in the first aspect. The specific switching and moving process of the multi-process clamping device 1 is as follows (assuming the designated positions of the two multi-process clamping devices 1 on the X+ side are A1, and the designated positions of the two multi-process clamping devices 1 on the X- side are A2):

[0168] a. The four multi-process clamping devices 1 are in a disabled state (relaxed state) to ensure that all multi-process clamping devices 1 can move normally in the X / Y / Z directions;

[0169] b. Drive the parallel rotating cylinders of the four multi-process clamping devices 1, the cylinders clamp, drive the gear disk and connecting rod 132 to rotate, so that the OP20 clamping part 12 is in a vertical state, and the gear disk meshes and clamps to fix the vertical state of the OP20 clamping part 12.

[0170] c. Using the machine tool spindle to drive the moving drive device 6, insert the moving drive device 6 into the moving drive block (first moving drive block 9a) of the multi-process clamping device 1 on the X+ side, driving the multi-process clamping device 1 to move along the base plate guide rail 4X direction, and simultaneously driving the hinge structure 14 of the multi-process clamping device to extend and retract to adjust the Z-axis position of the two multi-process clamping devices 1 in the Z direction, finally moving to position A1. Lock the 4 guide rail clamps 314 and 24 clamping discs 311 (each multi-process clamping device is equipped with 2 guide rail clamps and 12 clamping discs);

[0171] d. Use the equipment probe 82 to detect the position of the positioning module 81 to determine whether the multi-process clamping device 1 on the X+ side has reached the specified position A1: (1) Correct, proceed to step e; (2) Incorrect, release the 4 guide rail clamps 314 and 24 clamping discs 311 in step c, and repeat step c until the specified position A1 is reached.

[0172] e. Using the machine tool spindle to drive the moving drive device 6, insert the moving drive device 6 into the moving drive block (first moving drive block 9a) of the multi-process clamping device 1 on the X-side, driving the multi-process clamping device 1 to move along the base plate guide rail 4X direction, and simultaneously driving the hinge structure 14 of the multi-process clamping device to extend and retract to adjust the Z-axis position of the two multi-process clamping devices 14 in the Z direction, finally moving to position A2. Lock the 4 guide rail clamps 314 and 24 clamping discs 311;

[0173] f. Use the equipment probe 82 to detect the position of the positioning module 81 to determine whether the multi-process clamping device 1 on the X-side has reached the designated position A2: (1) Correct, complete the switch; (2) Incorrect, release the 4 guide rail clamps 314 and 24 clamping discs in step e, and repeat step e until the designated position A2 311 is reached.

[0174] g. The hydraulic oil drives the piston rod 121 of the OP20 pressure plate to generate its own reciprocating motion and rotational motion, thereby controlling the up-and-down movement of the OP20 pressure plate 122 along the Y-axis and its rotation around the Y-axis; the position change of the OP20 pressure plate 122, in conjunction with the OP20 positioning reference 123, is used to clamp and release different types of workpieces in different processes.

[0175] 2. When machining operation OP10 (process 10) is required, first switch the multi-process clamping device 1 to the OP10 state, then move it to the designated position. The movable devices of the flexible fixture can be moved as needed, following the same process as described in the first aspect. The specific switching and moving process of the multi-process clamping device 1 is as follows (assuming the designated positions of the two multi-process clamping devices on the X+ side are B1, and the designated positions of the two multi-process clamping devices on the X- side are B2):

[0176] a. All multi-process clamping devices 1 are in a disabled state (relaxed state) to ensure that the multi-process clamping devices 1 of the fixture can move normally in the X / Y / Z directions;

[0177] b. Drive the parallel rotating cylinders of the four multi-process clamping devices 1. When the cylinders are released, the gear disks separate. The parallel rotating cylinders drive the gear disks and connecting rods 132 to rotate, so that the OP20 clamping part 12 is in a horizontal state.

[0178] c. Using the machine tool spindle to drive the moving drive device 6, insert the moving drive device 6 into the moving drive block (first moving drive block 9a) of the multi-process clamping device 1 on the X+ side, drive the multi-process clamping device 1 to move along the base plate guide rail 4X direction, and at the same time drive the hinge structure 14 of the multi-process clamping device to extend and retract to adjust the Z-axis position of the two multi-process clamping devices 1 in the Z direction, and finally move to position B1. Lock the 4 guide rail clamps 314 and 24 clamping discs 311;

[0179] d. Use the equipment probe 82 to detect the position of the positioning module 81 to determine whether the multi-process clamping device 1 on the X+ side has reached the specified position B1: (1) Correct, proceed to step e; (2) Incorrect, release the 4 guide rail clamps 314 and 24 clamping discs 311 in step c, and repeat step c until the specified position B1 is reached.

[0180] e. Using the machine tool spindle to drive the moving drive device 6, insert the moving drive device 6 into the moving drive block (first moving drive block 9a) of the multi-process clamping device 1 on the X-side, drive the multi-process clamping device 1 to move along the X-direction of the base plate guide rail 4, and at the same time drive the hinge structure 14 of the multi-process clamping device to extend and retract to adjust the Z-axis position of the two multi-process clamping devices 1 in the Z-direction, and finally move to position B2. Lock the four guide rail clamps 314 and the 24 clamping discs 311;

[0181] f. Use the equipment probe 82 to detect the position of the positioning module 81 to determine whether the multi-process clamping device 1 on the X+ side has reached the designated position B2: (1) Correct, proceed to step e; (2) Incorrect, release the 4 guide rail clamps 314 and 24 clamping discs 311 in step e, and repeat step e until the designated position B2 is reached.

[0182] g. The machine tool spindle drives the moving drive device 6, and the moving drive device 6 is inserted into the moving drive block (second moving drive block 9b) of the multi-process clamping device 1 on the X+ / - side in sequence. The OP10 positioning reference piston rod 115 is adjusted by the OP10 positioning reference connecting rod 116 and the Y-axis position of the OP10 positioning reference 114 is controlled. The hydraulic oil drives the OP10 pressure plate piston rod 111 to generate its own reciprocating motion and rotational motion, thereby controlling the up and down movement of the OP10 pressure plate 112 along the Y-axis and its rotation around the Y-axis. The OP10 pressure plate 112 is provided with OP10 pressure plate pressure points 113. The position changes of the OP10 pressure plate pressure points 113 and the OP10 positioning reference 114 are used to clamp and release different types of workpieces in different processes.

[0183] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, variations, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-process clamping device, comprising a first clamping part, a second clamping part, and a rotating part; in, The first clamping part includes a first pressing assembly and a first cylinder; The second clamping part includes a second clamping assembly and a second cylinder; The rotating part includes a rotating clamping assembly and a coupling; one side of the coupling is located in the first cylinder body and the other side is located in the second cylinder body; the rotating clamping assembly passes through the coupling, connects the first clamping part and the second clamping part, and drives the second clamping part to rotate by its own rotation, so as to change the relative position of the first clamping assembly and the second clamping assembly.

2. The multi-process clamping device according to claim 1, characterized in that, The rotary clamping assembly includes a rotary clamping transmission unit and a connecting rod; the rotary clamping transmission unit is located inside the first cylinder; the connecting rod passes through the coupling, with one end connected to the rotary clamping transmission unit and the other end connected to the second cylinder.

3. The multi-process clamping device according to claim 2, characterized in that, The rotating part also includes a speed regulating component, which is associated with the rotary clamping transmission unit and is used to adjust the movement speed of the rotary clamping transmission unit and thus adjust the rotation speed of the rotating part.

4. The multi-process clamping device according to claim 3, characterized in that, The rotary clamping assembly is a parallel rotary cylinder; the speed regulating assembly is a speed regulating valve, which adjusts the clamping / releasing speed of the parallel rotary cylinder by controlling the hydraulic oil flow rate, so as to achieve smooth rotation of the second clamping part.

5. The multi-process clamping device according to claim 4, characterized in that, The coupling is an end face gear disc that can mesh and clamp tightly.

6. The multi-process clamping device according to claim 1, characterized in that, The first clamping assembly includes a first pressure plate piston rod and a first pressure plate, with the first pressure plate piston rod portion located within the first cylinder body; one end of the first pressure plate piston rod is connected to the first pressure plate, and the first pressure plate piston rod changes the position of the first pressure plate through its own reciprocating motion and rotational motion; the first pressure plate is used to clamp the workpiece; The second clamping assembly includes a second pressure plate piston rod and a second pressure plate. The second pressure plate piston rod is located inside the second cylinder. One end of the second pressure plate piston rod is connected to the second pressure plate. The second pressure plate piston rod changes the position of the second pressure plate through its reciprocating motion and rotational motion. The second pressure plate is used to clamp the workpiece.

7. The multi-process clamping device according to claim 6, characterized in that, The first clamping assembly further includes a first positioning reference, a first positioning reference piston rod, and a first positioning reference connecting rod; the first positioning reference piston rod and the first positioning reference connecting rod are partially located inside the first cylinder. The first positioning reference piston rod is connected at one end to the first positioning reference connecting rod and at the other end to the first positioning reference. The first positioning reference connecting rod drives the first positioning reference piston rod to reciprocate, thereby controlling the position change of the first positioning reference. The first pressure plate and the first positioning reference clamp the workpiece between them to press the workpiece. The second clamping assembly also includes a second positioning reference, and the second pressure plate and the second positioning reference clamp the workpiece between them to clamp the workpiece.

8. The multi-process clamping device according to claim 6, characterized in that, The first cylinder body also includes a first air detection block, which is associated with the first pressure plate piston rod to detect whether the first pressure plate has been relaxed to the appropriate position; the second cylinder body also includes a second air detection block, which is associated with the second pressure plate piston rod to detect whether the second pressure plate has been relaxed to the appropriate position.

9. The multi-process clamping device according to claim 1, characterized in that, The exterior of the first cylinder block includes: The positioning module, used in conjunction with the equipment probe on the machine tool, is used to confirm the position of the multi-process clamping device; The first moving drive block can be connected to the machine tool spindle, and the machine tool spindle controls the multi-process clamping device to move in the horizontal plane through the first moving drive block; Both the positioning module and the first moving drive block need to face the machine tool spindle.

10. The multi-process clamping device according to claim 7, characterized in that, The exterior of the first cylinder block includes: The second moving drive block can be connected to the machine tool spindle. The machine tool spindle drives the second moving drive block to move up and down, thereby controlling the reciprocating motion of the first positioning reference through the first positioning reference connecting rod. The second moving drive block needs to face the machine tool spindle. The second moving drive block cover plate is disposed on both sides of the second moving drive block to restrict the left and right movement of the second moving drive block.

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