Clamp device for numerical control machine tool

Abstract

The invention provides a clamp device for a numerical control machine tool, and relates to the technical field of clamps. Comprising a machine tool body, a machining head is slidably connected to the top of the machine tool body, a hydraulic cylinder is arranged in the machine tool body, a machining platform is arranged in the machine tool body, an auxiliary assembly is arranged on the machining platform, and the auxiliary assembly is used for assisting workpieces of different sizes in being clamped by a clamping assembly. The clamping assembly is connected to the auxiliary assemblies in a sliding mode, the number of the auxiliary assemblies is three, and the sizes of the three auxiliary assemblies are sequentially increased from top to bottom. By arranging the auxiliary assemblies and the clamping assemblies, when a workpiece is clamped, installation can be completed only by abutting the auxiliary assemblies up and down, the operation steps are simple, meanwhile, when the clamp clamps a cylindrical or square workpiece, the clamp does not need to be debugged, and more convenience is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of clamps, and in particular to a clamp device for a numerically controlled machine tool. Background Art

[0002] The fixture of a CNC machine tool is a process equipment used to clamp workpieces. It plays a vital role in the CNC machining process. Its main function is to ensure that the position of the workpiece is fixed during the machining process, thereby ensuring machining accuracy and production efficiency.

[0003] When clamping a workpiece, the existing CNC machine tool fixture needs to select a fixture of appropriate size according to the size of the workpiece, and the corresponding fixture needs to be installed on the machine tool. This process requires disassembly and installation of the fixture, which will waste a lot of time and affect the processing efficiency of the workpiece. At the same time, when clamping cylindrical workpieces and square workpieces, the existing fixture needs to be debugged, and the operation is relatively cumbersome. Therefore, the present application provides a fixture device for CNC machine tools to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a clamp device for CNC machine tools to solve the problem that the existing clamp needs to be installed and disassembled when clamping workpieces of different sizes, which process will waste a lot of time and the clamp needs to be debugged when clamping cylindrical workpieces and square workpieces, which is a cumbersome operation.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A clamping device for a CNC machine tool comprises a machine tool body, a processing head is slidably connected to the top of the machine tool body, a hydraulic cylinder is arranged inside the machine tool body, a processing platform is arranged in the machine tool body, an auxiliary component is arranged on the processing platform, the auxiliary component is used to assist workpieces of different sizes to be clamped by the clamping component, the clamping component is slidably connected to the auxiliary component, the auxiliary component is provided in three groups, the sizes of the three groups of auxiliary components increase successively from top to bottom, a group of clamping components in an annular array are slidably connected to the three groups of auxiliary components, the sizes of the three groups of clamping components increase successively from top to bottom, two adjacent auxiliary components are plugged together, an auxiliary groove is opened in the middle of the processing platform, the movable rod of the hydraulic cylinder is located in the auxiliary groove, the hydraulic cylinder is located directly below the auxiliary component, and the hydraulic cylinder is used to separate the three connected auxiliary components.

[0006] Optionally, the auxiliary component includes a cover plate, which is fixedly connected to the shell, a guide hole is provided in the middle position between the cover plate and the shell, an oil storage bin is provided between the cover plate and the shell, a guide hole is provided in the middle position of the oil storage bin, and an auxiliary plate is rotatably connected to the outer side of the oil storage bin.

[0007] Optionally, a group of first slide grooves in an annular array are provided on the cover plate, a first slot is provided on the cover plate, a sealed quick-release female head is provided on the cover plate, the first slot and the sealed quick-release female head are respectively located between two adjacent first slide grooves, and the bottom of the sealed quick-release female head is connected to the oil storage tank.

[0008] Optionally, a first plug rod is fixedly connected to the bottom of the shell, and a sealed quick-release male head is fixedly connected to the bottom of the shell, the first plug rod is located directly below the first slide groove, the sealed quick-release male head is located directly below the sealed quick-release female head, and the top of the sealed quick-release male head is connected to the oil storage tank.

[0009] Optionally, the oil storage tank is connected to the first oil storage rod through a hose, the bottom of the first oil storage rod is fixedly connected to the shell, the top of the first oil storage rod is limitedly slidably connected to the first tooth plate, one end of the first piston rod in the first oil storage rod is fixedly connected to one end of the first tooth plate, the bottom of the auxiliary plate is fixedly connected to the first gear, the first gear plate is meshingly connected to the first gear, and the top of the auxiliary plate is fixedly connected to the vortex plate.

[0010] Optionally, the first insertion rod and the sealed quick-release male head of the upper auxiliary component of two adjacent auxiliary components are respectively inserted into the first slot and the sealed quick-release female head of the lower auxiliary component, and the first insertion rod and the sealed quick-release male head of the auxiliary component located at the bottom are respectively inserted into the first slot and the sealed quick-release female head on the processing platform.

[0011] Optionally, the diameters of the guide holes in the three groups of auxiliary components increase sequentially from top to bottom, the movable rod of the hydraulic cylinder is provided with four sections, and the diameters of the four sections of the movable rod in the hydraulic cylinder increase sequentially from top to bottom. The top three sections of the movable rod of the hydraulic cylinder are respectively inserted into the guide holes in the corresponding auxiliary components, and the diameter of the bottom section of the movable rod of the hydraulic cylinder is larger than the diameter of the guide hole in the auxiliary component located at the bottom.

[0012] Optionally, the clamping assembly includes a first clamping head, the first clamping head is rotatably connected to the second clamping head on both sides, the inclined grooves on both sides of the first clamping head are rotatably connected to support rods, one end of the support rod is limitedly slidably connected to the second clamping head, the first clamping head is slidably connected to the first slider, the bottom of the first slider is fixedly connected to the top of the auxiliary block, the first slider is slidably connected in the first slide groove, and the auxiliary block is slidably connected to the auxiliary plate through a vortex plate.

[0013] Optionally, one end of the support rod is fixedly connected to a ball head, and the ball head is limitedly slidably connected to the limiting groove of the second clamping head, and the other end of the support rod is provided with a group of evenly spaced serrated structures, and the support rod is meshed with the second tooth plate through the serrated structure at the top, and the bottom of the second tooth plate is fixedly connected to a second piston rod, and a first spring is sleeved on the second piston rod, and the top of the first slider is fixedly connected to a baffle, and one side of the baffle is fixedly connected to a third piston rod.

[0014] Optionally, a first oil storage tank is opened inside the first clamping head, the third piston rod is slidably connected in the first oil storage tank, second oil storage tanks are arranged on both sides of the first oil storage tank, the first oil storage tank is connected to the second oil storage tank, and a second piston rod is slidably connected in the second oil storage tank.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting up auxiliary components, when processing the workpiece, by observing the size of the workpiece, the auxiliary components of the corresponding size are selected, so that the clamping components in the auxiliary components of the corresponding size can clamp the workpiece more stably, avoiding the need to frequently disassemble the fixture when the workpiece is large or small, which not only increases the workload of the operator, but also delays the processing time of the workpiece and affects the processing efficiency. Furthermore, by setting up multiple auxiliary components, when clamping the workpiece, the clamp of the corresponding size can be selected more quickly, and when installing, it only needs to be connected up and down to complete the installation. The operation steps are simple and complicated operations are avoided.

[0016] By setting up auxiliary components and hydraulic cylinders, after completing the processing of the workpiece, since the connection between the two adjacent auxiliary components is relatively tight, the movable rod can gradually separate the connected auxiliary components through the extension of the hydraulic cylinder to create a gap between them, and at the same time, the sealed quick-release male head and the sealed quick-release female head can be kept in a vertical upward state when separating, which not only can quickly achieve the separation between the two adjacent auxiliary components and facilitate the operator to collect each auxiliary component, but also protect the safety of the sealed quick-release male head and the sealed quick-release female head, and avoid shaking by the operator during the manual separation process, which will cause the sealing between the sealed quick-release male head and the sealed quick-release female head to be destroyed, affecting subsequent use.

[0017] By setting up a clamping assembly, when processing a workpiece, the cooperation between the first clamping head and the second clamping head can clamp the workpiece. Furthermore, when encountering a cylindrical workpiece or a square workpiece, the workpiece can be clamped without replacing the clamping head, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a fixture device for a CNC machine tool; Figure 2 It is a structural schematic diagram of the machine tool body of the present invention; Figure 3 It is a structural schematic diagram of the connection between the movable rod of the hydraulic cylinder of the present invention and the auxiliary component; Figure 4 It is a structural schematic diagram of the auxiliary components of the present invention; Figure 5 It is a structural schematic diagram of the cover plate of the present invention; Figure 6 It is a structural schematic diagram of the bottom of the housing of the present invention; Figure 7 It is a schematic diagram of the structure inside the auxiliary component of the present invention; Figure 8 It is a structural schematic diagram of the auxiliary plate of the present invention; Fig. 9 It is a schematic diagram of the structure of the clamping assembly of the present invention; Fig.10 An exploded view of the clamping assembly of the present invention; Fig.11 It is a structural schematic diagram of the clamping assembly part of the present invention; Fig.12 It is a partial cross-sectional view of the first clamping head of the present invention.

[0020] Reference numerals: 1. Machine tool body; 11. Processing platform; 111. Auxiliary slot; 2. Processing head; 3. Hydraulic cylinder; 4. Auxiliary components; 41. Cover plate; 411. First slide slot; 412. First slot; 413. Sealed quick-release female head; 414. Guide hole; 42. Shell; 421. First plug rod; 422. Sealed quick-release male head; 43. Oil storage tank; 431. First oil storage rod; 432. First piston rod; 433. First tooth plate; 44. Auxiliary Plate; 441, first gear; 442, vortex plate; 5, clamping assembly; 51, first clamping head; 511, inclined groove; 512, first oil storage tank; 513, second oil storage tank; 52, second clamping head; 521, limit groove; 53, support rod; 531, ball head; 532, second gear plate; 533, second piston rod; 534, first spring; 54, first slider; 541, baffle; 542, third piston rod; 55, auxiliary block.

[0021] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0022] The following is a detailed description of a clamp device for a CNC machine tool provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0023] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0024] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0025] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0026] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0027] like Figures 1 to 12 As shown, an embodiment of the present invention provides a clamping device for a numerically controlled machine tool, comprising a machine tool body 1, a processing head 2 is slidably connected to the top of the machine tool body 1, a hydraulic cylinder 3 is arranged inside the machine tool body 1, a processing platform 11 is arranged in the machine tool body 1, an auxiliary component 4 is arranged on the processing platform 11, the auxiliary component 4 is used to assist workpieces of different sizes to be clamped by a clamping component 5, the clamping component 5 is slidably connected to the auxiliary component 4, the auxiliary component 4 is provided with three groups, the sizes of the three groups of auxiliary components 4 increase from top to bottom, a group of clamping components 5 in an annular array are slidably connected to the three groups of auxiliary components 4, the sizes of the three groups of clamping components 5 increase from top to bottom, and two adjacent auxiliary components 4 are plugged in, an auxiliary groove 111 is opened in the middle of the processing platform 11, the movable rod of the hydraulic cylinder 3 is located in the auxiliary groove 111, and the hydraulic The hydraulic cylinder 3 is located directly below the auxiliary component 4. The hydraulic cylinder 3 is used to separate the three connected auxiliary components 4. When the operator needs to process the workpiece, he first needs to place the largest auxiliary component 4 on the processing platform 11. Then the operator needs to select the auxiliary component 4 of the corresponding size according to the size of the workpiece. After the auxiliary component 4 of the corresponding size is installed, the workpiece needs to be placed on the topmost auxiliary component 4 and clamped by the clamping component 5. After the workpiece is clamped stably, the operator can process the workpiece through the processing head 2. After the processing is completed, the operator needs to remove the processed workpiece and extend the hydraulic cylinder 3 to make multiple auxiliary components 4 rise at the same time and separate from each other. At this time, the operator can remove and place multiple auxiliary components 4 in turn.

[0028] As an implementation method in this embodiment, Figures 1 to 8As shown, the auxiliary component 4 includes a cover plate 41, which is fixedly connected to the shell 42, a guide hole 414 is provided in the middle position of the cover plate 41 and the shell 42, an oil storage bin 43 is provided between the cover plate 41 and the shell 42, a guide hole 414 is provided in the middle position of the oil storage bin 43, an auxiliary plate 44 is rotatably connected to the outer side of the oil storage bin 43, a group of first slide grooves 411 in an annular array are provided on the cover plate 41, a first slot 412 is provided on the cover plate 41, a sealed quick-release female head 413 is provided on the cover plate 41, the first slot 412 and the sealed quick-release female head 413 are respectively located between two adjacent first slide grooves 411, the bottom of the sealed quick-release female head 413 is connected to the oil storage bin 43, and the bottom of the shell 42 is connected to the oil storage bin 43. The first plug rod 421 is fixedly connected to the bottom of the shell 42, and a sealed quick-release male head 422 is fixedly connected to the bottom of the shell 42. The first plug rod 421 is located directly below the first slide groove 411, and the sealed quick-release male head 422 is located directly below the sealed quick-release female head 413. The top of the sealed quick-release male head 422 is connected to the oil storage bin 43, and the oil storage bin 43 is connected to the first oil storage rod 431 through a hose. The bottom of the first oil storage rod 431 is fixedly connected to the shell 42, and the top of the first oil storage rod 431 is limitedly slidably connected to the first toothed plate 433. One end of the first piston rod 432 in the first oil storage rod 431 is fixedly connected to one end of the first toothed plate 433. The bottom of the auxiliary plate 44 is fixedly connected to the first gear 441. 33 is meshed and connected with the first gear 441, and a vortex plate 442 is fixedly connected to the top of the auxiliary plate 44. The first plug rod 421 and the sealed quick-release male head 422 of the upper auxiliary component 4 of the two adjacent auxiliary components 4 are respectively inserted into the first slot 412 and the sealed quick-release female head 413 of the lower auxiliary component 4, and the first plug rod 421 and the sealed quick-release male head 422 of the lower auxiliary component 4 are respectively inserted into the first slot 412 and the sealed quick-release female head 413 on the processing platform 11. When the auxiliary component 4 of the largest size is installed on the processing platform 11, it is first necessary to insert the first plug rod 421 at the bottom of the shell 42 into the first slot 412 of the processing platform 11. As the shell 42 descends, the sealed quick-release male head 422 will be inserted into the sealed quick-release female head 413 of the processing platform 11. When the bottom of the shell 42 contacts the processing platform 11, the sealed quick-release male head 422 and the sealed quick-release female head 413 complete the sealed connection. The single sealed quick-release male head 422 and the sealed quick-release female head 413 are sealed, and the oil cannot flow out from the plug-in end of the sealed quick-release male head 422 and the sealed quick-release female head 413 alone. According to the actual size of the workpiece, select the medium-sized auxiliary component 4 or the smallest-sized auxiliary component 4. When selecting the medium-sized auxiliary component 4, you only need to place the medium-sized auxiliary component 4 above the largest-sized auxiliary component 4.The first plug rod 421 and the sealed quick-release male head 422 of the medium-sized auxiliary component 4 are inserted into the first slot 412 and the sealed quick-release female head 413 of the largest-sized auxiliary component 4, so that the sealed quick-release male head 422 in the medium-sized auxiliary component 4 and the sealed quick-release female head 413 in the largest-sized auxiliary component 4 are connected. At this time, when the clamping component 5 needs to clamp the workpiece, it only needs to place the workpiece on the medium-sized cover plate 41, and then the machine tool body 1 will pass the oil through the sealed quick release in the processing platform 11. The female connector 413 flows into the sealed quick-release male connector 422 in the auxiliary component 4 of the largest size, so that the oil can enter the oil storage tank 43. When the oil enters the oil storage tank 43, part of the oil will enter the oil storage tank 43 of the auxiliary component 4 of the medium size through the sealed quick-release joint. When the oil enters the oil storage tank 43 of the auxiliary component 4 of the largest size, it will enter the first oil storage rod 431 through the hose, thereby pushing the first piston rod 432 to move the first tooth plate 433. When the first tooth plate 433 moves, At this time, the auxiliary plate 44 will be rotated by the first gear 441. When the auxiliary plate 44 rotates, the clamping assembly 5 in the maximum size auxiliary assembly 4 will be gradually tightened and clamped on the surface of the medium size auxiliary assembly 4. At this time, the clamping assembly 5 in the maximum size auxiliary assembly 4 cannot continue to move because it is clamped on the medium size auxiliary assembly 4. At this time, the first tooth plate 433 stops moving, so that the oil that later enters the oil storage tank 43 of the maximum size auxiliary assembly 4 enters the oil storage tank 43 of the medium size auxiliary assembly 4, and at the same time drives the auxiliary plate 44 in the medium size auxiliary assembly 4 to rotate, so that the clamping assembly 5 on the medium size auxiliary assembly 4 moves to achieve the clamping of the workpiece. When the size of the workpiece to be processed is small, it is only necessary to install the minimum size auxiliary assembly 4 on the medium size auxiliary assembly 4, and clamp the medium size auxiliary assembly 4 through the maximum size auxiliary assembly 4, and then clamp the minimum size auxiliary assembly 4 through the medium size auxiliary assembly 4, and finally clamp the workpiece through the minimum size auxiliary assembly 4 to achieve the clamping of the workpiece.

[0029] In this embodiment, if Figures 1 to 8 As shown, when processing the workpiece, the auxiliary component 4 of the corresponding size is selected by observing the size of the workpiece, so that the clamping component 5 in the auxiliary component 4 of the corresponding size can clamp the workpiece more stably, avoiding the need to frequently disassemble the fixture when the workpiece is larger or smaller, which not only increases the workload of the operator, but also delays the workpiece processing time and affects the processing efficiency. Furthermore, by setting up multiple auxiliary components 4, when clamping the workpiece, the clamp of the corresponding size can be selected more quickly, and when installing, it only needs to be connected up and down to complete the installation. The operation steps are simple and complicated operations are avoided.

[0030] As an implementation method in this embodiment, Figures 1 to 6 As shown, the diameters of the guide holes 414 in the three groups of auxiliary components 4 increase from top to bottom. The movable rod of the hydraulic cylinder 3 is provided with four sections, and the diameters of the four sections of the movable rod in the hydraulic cylinder 3 increase from top to bottom. The three sections at the top of the movable rod of the hydraulic cylinder 3 are respectively plugged into the guide holes 414 in the corresponding auxiliary components 4, and the diameter of the section at the bottom of the movable rod of the hydraulic cylinder 3 is larger than the diameter of the guide hole 414 in the auxiliary component 4 at the bottom. When the workpiece is processed and taken out, the clamping assembly 5 loses the clamping of the auxiliary component 4 and the workpiece. At the same time, the movable rod of the hydraulic cylinder 3 begins to extend and gradually inserts into the guide hole 414 of the largest size. As the movable rod extends, the section with the smallest diameter in the movable rod will pass through the guide hole 414 of the smallest size. When the section with the second-to-last diameter passes through the guide hole 414 of the middle size and abuts against the bottom of the shell 42 in the smallest auxiliary component 4, as the movable rod continues to extend, the section with the second-to-last diameter in the movable rod will lift up the auxiliary component 4 with the smallest size at the top, thereby realizing the separation between the two adjacent auxiliary components 4.

[0031] In this embodiment, if Figures 1 to 6 As shown, after the processing of the workpiece is completed, since the connection between the two adjacent auxiliary components 4 is relatively tight, the movable rod can gradually separate the connected auxiliary components 4 through the extension of the hydraulic cylinder 3, so that a gap is generated therebetween, and at the same time, the sealed quick-release male head 422 and the sealed quick-release female head 413 are kept in a vertical upward state when separated, which not only can quickly realize the separation between the two adjacent auxiliary components 4 and facilitate the operator to collect each auxiliary component 4, but also protect the safety of the sealed quick-release male head 422 and the sealed quick-release female head 413, and avoid the operator from shaking during the manual separation process, resulting in the destruction of the sealing between the sealed quick-release male head 422 and the sealed quick-release female head 413, affecting subsequent use.

[0032] As an implementation method in this embodiment, Figures 8 to 12As shown, the clamping assembly 5 includes a first clamping head 51, and the second clamping heads 52 are rotatably connected on both sides of the first clamping head 51. Support rods 53 are rotatably connected in the inclined grooves 511 on both sides of the first clamping head 51. One end of the support rod 53 is limitedly slidably connected to the second clamping head 52. The first clamping head 51 is slidably connected to the first slider 54. The bottom of the first slider 54 is fixedly connected to the top of the auxiliary block 55. The first slider 54 is slidably connected in the first slide groove 411. The auxiliary block 55 is slidably connected to the auxiliary plate 44 through the vortex plate 442. One end of the support rod 53 is fixedly connected to the ball head 531, and the ball head 531 is limitedly slidably connected in the limiting groove 521 of the second clamping head 52. The other end of the support rod 53 is provided with a set of spacers. The support rod 53 is meshed with the second tooth plate 532 through the serrated structure at the top. The second piston rod 533 is fixedly connected to the bottom of the second tooth plate 532. The first spring 534 is sleeved on the second piston rod 533. The top of the first slider 54 is fixedly connected to a baffle 541. One side of the baffle 541 is fixedly connected to the third piston rod 542. A first oil storage tank 512 is provided inside the first clamping head 51. The third piston rod 542 is slidably connected to the first oil storage tank 512. Second oil storage tanks 513 are provided on both sides of the first oil storage tank 512. The first oil storage tank 512 is connected to the second oil storage tank 513. The second piston rod 533 is slidably connected in the second oil storage tank 513. When the workpiece to be processed is square When the auxiliary plate 44 rotates, the four auxiliary blocks 55 on the auxiliary plate 44 will move synchronously, so that the four first sliding blocks 54 gradually approach the surface of the workpiece. When the first clamping head 51 abuts against the surface of the workpiece, the second clamping heads 52 on both sides of the first clamping head 51 will contact the surface of the workpiece at the same time. At this time, since the two second clamping heads 52 are blocked by the surface of the workpiece, the second clamping heads 52 cannot rotate, thereby causing the support rod 53 to be unable to rotate. When the support rod 53 cannot move, the second tooth plate 532 will remain stationary accordingly, so that the oil in the first oil storage tank 512 cannot enter the second oil storage tank 513. Furthermore, at this time, the third piston rod 542 can only remain stationary and pass The auxiliary block 55 stops moving through the first slider 54, and the auxiliary plate 44 stops rotating. At this time, the four clamping components 5 will be tightly clamped on the surface of the workpiece, so that the workpiece remains stable during processing. When the workpiece is a cylinder, when the first clamping head 51 touches the cylindrical surface, the second clamping heads 52 located on both sides of the first clamping head 51 do not contact the workpiece surface. As the auxiliary plate 44 rotates, the auxiliary block 55 drives the first slider 54 to move, so that the third piston rod 542 is inserted into the first oil storage tank 512, and part of the oil in the first oil storage tank 512 is squeezed into the second oil storage tank 513. When the oil enters the second oil storage tank 513, it pushes the second piston rod 533. When the second piston rod 533 moves,The second tooth plate 532 drives the support rod 53 to rotate through the sawtooth structure. When one end of the support rod 53 rotates, the other end slides in the limiting groove 521 of the second clamping head 52 through the ball head 531. During this process, the second clamping head 52 rotates. When the second clamping head 52 rotates to the surface of the workpiece, the auxiliary plate 44 stops rotating, so that the second clamping head 52 cooperates with the first clamping head 51 to firmly fix the cylindrical workpiece.

[0033] In this embodiment, if Figures 8 to 12 As shown, when processing a workpiece, the cooperation between the first clamping head 51 and the second clamping head 52 can clamp the workpiece. Furthermore, when encountering a cylindrical workpiece or a square workpiece, the workpiece can be clamped without replacing the clamping head, which is more convenient.

[0034] The working principle of the technical solution provided by the present invention is as follows: When the operator needs to process the workpiece, first the largest auxiliary component 4 needs to be placed on the processing platform 11, and then the operator needs to select the auxiliary component 4 of the corresponding size according to the size of the workpiece. After the auxiliary component 4 of the corresponding size is installed, the workpiece needs to be placed on the uppermost auxiliary component 4 and clamped by the clamping component 5. After the workpiece is clamped stably, the operator can process the workpiece through the processing head 2. After the processing is completed, the operator needs to remove the processed workpiece and extend the hydraulic cylinder 3 to make multiple auxiliary components 4 rise at the same time and separate from each other. At this time, the operator can remove and place multiple auxiliary components 4 in turn.

[0035] When installing the auxiliary component 4 of the largest size on the processing platform 11, it is first necessary to insert the first plug rod 421 at the bottom of the shell 42 into the first slot 412 of the processing platform 11. As the shell 42 descends, the sealed quick-release male head 422 will be inserted into the sealed quick-release female head 413 of the processing platform 11. When the bottom of the shell 42 contacts the processing platform 11, the sealed quick-release male head 422 and the sealed quick-release female head 413 complete the sealed connection. The single sealed quick-release male head 422 and the sealed quick-release female head 413 are sealed, and the oil cannot flow out from the plug-in end of the sealed quick-release male head 422 and the sealed quick-release female head 413 alone. According to the actual size of the workpiece, select a medium-sized auxiliary component 4 or a minimum-sized one. When the auxiliary component 4 of the medium size is selected, it is only necessary to place the auxiliary component 4 of the medium size above the auxiliary component 4 of the maximum size, so that the first plug rod 421 and the sealed quick-release male head 422 of the medium size auxiliary component 4 are inserted into the first slot 412 and the sealed quick-release female head 413 in the auxiliary component 4 of the maximum size, so that the sealed quick-release male head 422 in the auxiliary component 4 of the medium size and the sealed quick-release female head 413 in the auxiliary component 4 of the maximum size are connected. At this time, when the clamping component 5 needs to clamp the workpiece, it is only necessary to place the workpiece on the medium size cover plate 41, and then the machine tool body 1 will flow the oil into the auxiliary component of the maximum size through the sealed quick-release female head 413 in the machining platform 11. The sealed quick-release male head 422 in the component 4 allows the oil to enter the oil storage bin 43. When the oil enters the oil storage bin 43, part of the oil will enter the oil storage bin 43 of the medium-sized auxiliary component 4 through the sealed quick-release joint. When the oil enters the oil storage bin 43 of the auxiliary component 4 of the largest size, it will enter the first oil storage rod 431 through the hose, thereby pushing the first piston rod 432 to move the first tooth plate 433. When the first tooth plate 433 moves, the auxiliary plate 44 will rotate through the first gear 441. When the auxiliary plate 44 rotates, the clamping component 5 in the auxiliary component 4 of the largest size will gradually tighten and clamp on the surface of the auxiliary component 4 of the medium size. At this time, the auxiliary component 4 of the largest size will be clamped on the surface of the auxiliary component 4 of the largest size. The clamping assembly 5 in the auxiliary assembly 4 cannot move further because it is clamped on the medium-sized auxiliary assembly 4. At this time, the first tooth plate 433 stops moving, so that the oil that later enters the oil storage tank 43 of the maximum-sized auxiliary assembly 4 enters the oil storage tank 43 of the medium-sized auxiliary assembly 4, and at the same time drives the auxiliary plate 44 in the medium-sized auxiliary assembly 4 to rotate, so that the clamping assembly 5 located on the medium-sized auxiliary assembly 4 moves to clamp the workpiece. When the size of the processed workpiece is small, it is only necessary to install the minimum-sized auxiliary assembly 4 on the medium-sized auxiliary assembly 4, and clamp the medium-sized auxiliary assembly 4 through the maximum-sized auxiliary assembly 4, and then clamp the minimum-sized auxiliary assembly 4 through the medium-sized auxiliary assembly 4.Finally, the workpiece is clamped by the minimum-sized auxiliary component 4 to achieve the clamping of the workpiece. When processing the workpiece, the auxiliary component 4 of the corresponding size is selected by observing the size of the workpiece, so that the clamping component 5 in the auxiliary component 4 of the corresponding size can clamp the workpiece more stably, avoiding the need to frequently disassemble the fixture when the workpiece is large or small, which not only increases the workload of the operator, but also delays the processing time of the workpiece and affects the processing efficiency. Further, by setting multiple auxiliary components 4, when clamping the workpiece, the clamp of the corresponding size can be selected more quickly. When installing, it only needs to be connected up and down to complete the installation. The operation steps are simple and complicated operations are avoided.

[0036] After the workpiece is processed and taken out, the clamping assembly 5 loses its grip on the auxiliary assembly 4 and the workpiece, and the movable rod of the hydraulic cylinder 3 begins to extend and gradually inserts into the guide hole 414 of the largest size. As the movable rod extends, the smallest diameter section of the movable rod passes through the smallest guide hole 414. When the second-to-last diameter section passes through the medium-sized guide hole 414 and abuts against the bottom of the shell 42 of the smallest auxiliary assembly 4, as the movable rod continues to extend, the second-to-last diameter section of the movable rod will lift up the smallest auxiliary assembly 4 at the top, thereby separating the two adjacent auxiliary assemblies 4. After the workpiece is processed, due to the adjacent The two auxiliary components 4 are connected tightly, and the movable rod can gradually separate the connected auxiliary components 4 through the extension of the hydraulic cylinder 3, so that a gap is generated between them, and at the same time, the sealed quick-release male head 422 and the sealed quick-release female head 413 are kept in a vertical upward state when they are separated, which not only can quickly realize the separation between the two adjacent auxiliary components 4 and facilitate the operator to collect each auxiliary component 4, but also protect the safety of the sealed quick-release male head 422 and the sealed quick-release female head 413, and avoid the operator from shaking during the manual separation process, which will cause the sealing between the sealed quick-release male head 422 and the sealed quick-release female head 413 to be destroyed, affecting the subsequent use.

[0037] When the workpiece to be processed is square, as the auxiliary plate 44 rotates, the four auxiliary blocks 55 located on the auxiliary plate 44 will move synchronously, so that the four first sliding blocks 54 gradually approach the surface of the workpiece, and when the first clamping head 51 abuts against the surface of the workpiece, the second clamping heads 52 located on both sides of the first clamping head 51 will contact the surface of the workpiece at the same time. At this time, since the two second clamping heads 52 are blocked by the surface of the workpiece, the second clamping heads 52 cannot rotate, thereby causing the support rod 53 to be unable to rotate. When the support rod 53 cannot move, the second clamping heads 52 The toothed plate 532 will remain stationary accordingly, so that the oil in the first oil storage tank 512 cannot enter the second oil storage tank 513. Furthermore, at this time, the third piston rod 542 can only remain stationary, and the auxiliary block 55 stops moving through the first slider 54, and the auxiliary plate 44 stops rotating. At this time, the four clamping assemblies 5 will be tightly clamped on the surface of the workpiece, so that the workpiece remains stable during processing. When the workpiece is a cylinder, when the first clamping head 51 touches the cylindrical surface, the second clamping heads 52 on both sides of the first clamping head 51 do not touch the workpiece. The auxiliary plate 44 is in contact with the surface of the supporting rod 53. As the auxiliary plate 44 rotates, the auxiliary block 55 drives the first sliding block 54 to move, so that the third piston rod 542 is inserted into the first oil storage tank 512, and part of the oil in the first oil storage tank 512 is squeezed into the second oil storage tank 513. When the oil enters the second oil storage tank 513, it pushes the second piston rod 533. When the second piston rod 533 moves, the second tooth plate 532 drives the support rod 53 to rotate through the sawtooth structure. When one end of the support rod 53 rotates, the other end is in the second oil storage tank 513 through the ball head 531. The clamping head 52 slides in the limit groove 521. During this process, the second clamping head 52 will rotate. When the second clamping head 52 rotates to the surface of the workpiece, the auxiliary plate 44 stops rotating, so that the second clamping head 52 cooperates with the first clamping head 51 to firmly fix the cylindrical workpiece. When the workpiece is processed, the cooperation between the first clamping head 51 and the second clamping head 52 can clamp the workpiece. Furthermore, when encountering a cylindrical workpiece or a square workpiece, the workpiece can be clamped without replacing the clamping head, which is more convenient.

[0038] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fixture device for a CNC machine tool, characterized in that: The invention comprises a machine tool body, a processing head is slidably connected to the top of the machine tool body, a hydraulic cylinder is arranged inside the machine tool body, a processing platform is arranged in the machine tool body, an auxiliary component is arranged on the processing platform, the auxiliary component is used to assist workpieces of different sizes to be clamped by the clamping component, the clamping component is slidably connected to the auxiliary component, the auxiliary component is provided in three groups, the sizes of the three groups of auxiliary components increase successively from top to bottom, a group of clamping components in a ring array is slidably connected to the three groups of auxiliary components, the sizes of the three groups of clamping components increase successively from top to bottom, two adjacent auxiliary components are plugged in, an auxiliary groove is opened in the middle of the processing platform, the movable rod of the hydraulic cylinder is located in the auxiliary groove, the hydraulic cylinder is located directly below the auxiliary component, and the hydraulic cylinder is used to separate the three connected auxiliary components.

2. The fixture device for a CNC machine tool according to claim 1, characterized in that: The auxiliary component includes a cover plate, which is fixedly connected to the shell, a guide hole is provided in the middle position of the cover plate and the shell, an oil storage bin is provided between the cover plate and the shell, a guide hole is provided in the middle position of the oil storage bin, and an auxiliary plate is rotatably connected to the outer side of the oil storage bin.

3. The fixture device for a CNC machine tool according to claim 2, characterized in that: A group of first slide grooves in an annular array are provided on the cover plate, a first slot is provided on the cover plate, a sealed quick-release female head is provided on the cover plate, the first slot and the sealed quick-release female head are respectively located between two adjacent first slide grooves, and the bottom of the sealed quick-release female head is connected to the oil storage tank.

4. The fixture device for a CNC machine tool according to claim 3, characterized in that: A first plug rod is fixedly connected to the bottom of the shell, and a sealed quick-release male head is fixedly connected to the bottom of the shell. The first plug rod is located directly below the first slide groove, and the sealed quick-release male head is located directly below the sealed quick-release female head. The top of the sealed quick-release male head is connected to the oil storage tank.

5. The fixture device for a CNC machine tool according to claim 4, characterized in that: The oil storage tank is connected to the first oil storage rod through a hose, the bottom of the first oil storage rod is fixedly connected to the shell, the top of the first oil storage rod is limitedly slidably connected to the first tooth plate, one end of the first piston rod in the first oil storage rod is fixedly connected to one end of the first tooth plate, the bottom of the auxiliary plate is fixedly connected to the first gear, the first gear plate is meshed with the first gear, and the top of the auxiliary plate is fixedly connected to the vortex plate.

6. The fixture device for a CNC machine tool according to claim 5, characterized in that: The first insertion rod and the sealed quick-release male head of the upper auxiliary component of the two adjacent auxiliary components are respectively inserted into the first slot and the sealed quick-release female head of the lower auxiliary component, and the first insertion rod and the sealed quick-release male head of the auxiliary component located at the bottom are respectively inserted into the first slot and the sealed quick-release female head on the processing platform.

7. The fixture device for a CNC machine tool according to claim 6, characterized in that: The diameters of the guide holes in the three groups of auxiliary components increase sequentially from top to bottom. The movable rod of the hydraulic cylinder is provided with four sections. The diameters of the four sections of the movable rod in the hydraulic cylinder increase sequentially from top to bottom. The three uppermost sections of the movable rod of the hydraulic cylinder are respectively inserted into the guide holes in the corresponding auxiliary components, and the diameter of the lowermost section of the movable rod of the hydraulic cylinder is larger than the diameter of the guide hole in the auxiliary component located at the lowermost.

8. The fixture device for a CNC machine tool according to claim 7, characterized in that: The clamping assembly includes a first clamping head, the first clamping head is rotatably connected to the second clamping head on both sides, the inclined grooves on both sides of the first clamping head are rotatably connected to support rods, one end of the support rod is limitedly slidably connected to the second clamping head, the first clamping head is slidably connected to the first slider, the bottom of the first slider is fixedly connected to the top of the auxiliary block, the first slider is slidably connected in the first slide groove, and the auxiliary block is slidably connected to the auxiliary plate through a vortex plate.

9. The fixture device for a CNC machine tool according to claim 8, characterized in that: One end of the support rod is fixedly connected to a ball head, and the ball head is limitedly slidably connected to the limiting groove of the second clamping head. The other end of the support rod is provided with a group of evenly spaced serrated structures, and the support rod is meshed with the second tooth plate through the serrated structure on the top. The bottom of the second tooth plate is fixedly connected to a second piston rod, and a first spring is sleeved on the second piston rod. The top of the first slider is fixedly connected to a baffle, and one side of the baffle is fixedly connected to a third piston rod.

10. The fixture device for a CNC machine tool according to claim 9, characterized in that: A first oil storage tank is provided inside the first clamping head, and the third piston rod is slidably connected in the first oil storage tank. Second oil storage tanks are provided on both sides of the first oil storage tank. The first oil storage tank is connected to the second oil storage tank, and a second piston rod is slidably connected in the second oil storage tank.

Images