A fixture device for a numerical control machine tool

Abstract

The present invention provides a fixture device for a numerically controlled machine tool, which relates to the technical field of fixtures. It includes a machine tool body, on the top of which a processing head is slidably connected. A hydraulic cylinder is arranged inside the machine tool body, and a processing platform is arranged in the machine tool body. An auxiliary component is arranged on the processing platform, and the auxiliary component is used to assist workpieces of different sizes to be clamped by a clamping component. The clamping component is slidably connected to the auxiliary component. There are three groups of the auxiliary components, and the sizes of the three groups of the auxiliary components increase sequentially from top to bottom. By setting the auxiliary component and the clamping component, when clamping a workpiece, only the auxiliary components need to be docked up and down to complete the installation, and the operation steps are simple. At the same time, when the fixture clamps a cylindrical or square workpiece, there is no need to debug the fixture, which is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of jigs, and particularly relates to a jig device for a numerically controlled machine tool. Background Art

[0002] The jig of a numerically controlled machine tool is a process equipment for clamping workpieces, which plays a crucial role in the numerical control machining process. Its main function is to ensure the fixed position of the workpiece during the machining process, thereby ensuring the machining accuracy and production efficiency.

[0003] When the existing numerically controlled machine tool jigs clamp workpieces, it is necessary to select a jig with a suitable size according to the size of the workpiece, and it is also necessary to install the corresponding jig on the machine tool. This process requires the disassembly and installation of the jig, which will take a lot of time and affect the machining efficiency of the workpiece. At the same time, when the existing jigs clamp cylindrical workpieces and square workpieces, it is necessary to debug the jigs, and the operation is relatively cumbersome. Therefore, the present application provides a jig device for a numerically controlled machine tool to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a jig device for a numerically controlled machine tool to solve the problems that when the existing jigs clamp workpieces of different sizes, it is necessary to install and disassemble the jigs, which will take a lot of time, and when clamping cylindrical workpieces and square workpieces, it is necessary to debug the jigs, and the operation is relatively cumbersome.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A jig device for a numerically controlled machine tool, including 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 a clamping component, the clamping component is slidably connected to the auxiliary component, there are three groups of the auxiliary components, the sizes of the three groups of auxiliary components increase sequentially from top to bottom, a group of clamping components arranged in a circular array are slidably connected to each of the three groups of auxiliary components, the sizes of the three groups of clamping components increase sequentially from top to bottom, adjacent two of the auxiliary components are inserted into each other, 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.

[0007] Optionally, the auxiliary component includes a cover plate fixedly connected to the housing. A guiding hole is provided at the middle position between the cover plate and the housing. An oil storage chamber is provided between the cover plate and the housing. A guiding hole is provided at the middle position of the oil storage chamber. An auxiliary plate is rotatably connected to the outside of the oil storage chamber.

[0008] Optionally, a set of annularly arrayed first sliding grooves are formed in the cover plate. A first slot is formed in the cover plate. A sealed quick-release female connector is provided on the cover plate. The first slot and the sealed quick-release female connector are respectively located between two adjacent first sliding grooves. The bottom of the sealed quick-release female connector communicates with the oil storage chamber.

[0009] Optionally, a first plug rod is fixedly connected to the bottom of the housing. A sealed quick-release male connector is fixedly connected to the bottom of the housing. The first plug rod is located directly below the first sliding groove. The sealed quick-release male connector is located directly below the sealed quick-release female connector. The top of the sealed quick-release male connector communicates with the oil storage chamber.

[0010] Optionally, the oil storage chamber is connected to a first oil storage rod through a hose. The bottom of the first oil storage rod is fixedly connected to the housing. A first toothed plate is limited and slidably connected to the top of the first oil storage rod. One end of a first piston rod in the first oil storage rod is fixedly connected to one end of the first toothed plate. A first gear is fixedly connected to the bottom of the auxiliary plate. The first toothed plate is meshed with the first gear. A scroll plate is fixedly connected to the top of the auxiliary plate.

[0011] Optionally, the first plug rod and the sealed quick-release male connector in the upper auxiliary component among two adjacent auxiliary components are respectively inserted into the first slot and the sealed quick-release female connector in the lower auxiliary component. The first plug rod and the sealed quick-release male connector in the lowermost auxiliary component are respectively inserted into the first slot and the sealed quick-release female connector on the processing platform.

[0012] Optionally, the diameters of the guiding holes in the three groups of auxiliary components increase sequentially from top to bottom. The movable rod of the hydraulic cylinder has four segments. The diameters of the four segments of the movable rod in the hydraulic cylinder increase sequentially from top to bottom. The uppermost three segments of the movable rod in the hydraulic cylinder are respectively inserted into the guiding holes in the corresponding auxiliary components. The diameter of the lowermost segment of the movable rod in the hydraulic cylinder is larger than the diameter of the guiding hole in the lowermost auxiliary component.

[0013] Optionally, the clamping assembly includes a first clamping head, with second clamping heads rotatably connected to both sides of the first clamping head. Support rods are rotatably connected to the inclined slots on both sides of the first clamping head, and one end of each support rod is connected to the second clamping head in a limited sliding manner. The first clamping head is slidably connected to a first slider, and the bottom of the first slider is fixedly connected to the top of an auxiliary block. The first slider is slidably connected to a first chute, and the auxiliary block is slidably connected to an auxiliary plate through a scroll plate.

[0014] Optionally, one end of the support rod is fixedly connected with a ball head, and the ball head is connected to the limiting slot of the second clamping head in a limited sliding manner. The other end of the support rod is provided with a group of evenly spaced serrated structures. The support rod is meshed and connected to a second toothed plate through the serrated structure at the top. The bottom of the second toothed plate is fixedly connected to a second piston rod, and a first spring is sleeved on the second piston rod. A baffle is fixedly connected to the top of the first slider, and a third piston rod is fixedly connected to one side of the baffle.

[0015] Optionally, a first oil storage tank is formed inside the first clamping head. The third piston rod is slidably connected to the first oil storage tank. Second oil storage tanks are arranged on both sides of the first oil storage tank, and the first oil storage tank is communicated with the second oil storage tanks. The second piston rod is slidably connected to the second oil storage tank.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above solution, by providing an auxiliary assembly, when processing a workpiece, by observing the size of the workpiece, the auxiliary assembly with the corresponding size can be selected, so that the clamping assembly in the auxiliary assembly with the corresponding size can clamp the workpiece more stably, avoiding the need to frequently disassemble the fixture when the workpiece is too large or too 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 providing multiple auxiliary assemblies, when clamping the workpiece, the fixture with the corresponding size can be selected more quickly. During installation, it only needs to be docked up and down to complete the installation, and the operation steps are simple, avoiding complex operations.

[0018] By setting up auxiliary components and a hydraulic cylinder, after the workpiece is processed, since the connection between two adjacent auxiliary components is relatively tight, through the extension of the hydraulic cylinder, the movable rod can gradually separate the connected auxiliary components, creating a gap between them. At the same time, when the quick-release male seal and the quick-release female seal are separated, they maintain a vertically upward state. This not only enables the rapid separation of two adjacent auxiliary components, facilitating the operator to collect each auxiliary component, but also protects the safety of the quick-release male seal and the quick-release female seal, preventing the operator from causing shaking during the manual separation process, which could damage the sealing performance between the quick-release male seal and the quick-release female seal and affect subsequent use.

[0019] By setting up a clamping component, when processing the workpiece, the cooperation between the first clamping head and the second clamping head can clamp the workpiece. Further, when encountering a cylindrical workpiece or a square workpiece, there is no need to replace the clamping head to clamp the workpiece, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a fixture device for a numerical control machine tool;

[0022] Figure 2 It is a structural schematic diagram of the machine tool body of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the connection between the movable rod of the hydraulic cylinder and the auxiliary component of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the auxiliary component of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the cover plate of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the bottom of the housing of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the inside of the auxiliary component of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the auxiliary plate of the present invention;

[0029] Figure 9 It is a structural schematic diagram of the clamping component of the present invention;

[0030] Figure 10 Explosion diagram of the clamping component of the present invention;

[0031] Figure 11 Schematic structural diagram of a part of the clamping component of the present invention;

[0032] Figure 12 Partial cross-sectional view of the first clamping head of the present invention.

[0033] Reference numerals:

[0034] 1. Machine tool body; 11. Machining platform; 111. Auxiliary groove; 2. Machining head; 3. Hydraulic cylinder; 4. Auxiliary component; 41. Cover plate; 411. First chute; 412. First slot; 413. Sealed quick-release female head; 414. Guide hole; 42. Housing; 421. First plug rod; 422. Sealed quick-release male head; 43. Oil storage bin; 431. First oil storage rod; 432. First piston rod; 433. First toothed plate; 44. Auxiliary plate; 441. First gear; 442. Scroll plate; 5. Clamping component; 51. First clamping head; 511. Inclined groove; 512. First oil storage groove; 513. Second oil storage groove; 52. Second clamping head; 521. Limit groove; 53. Support rod; 531. Ball head; 532. Second toothed plate; 533. Second piston rod; 534. First spring; 54. First slider; 541. Baffle; 542. Third piston rod; 55. Auxiliary block.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0036] The following describes in detail a fixture device for a numerical control machine tool provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. Those skilled in the art can also adopt other alternative methods for some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0037] It should be noted that in the specification, references to "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Additionally, when a particular feature, structure, or characteristic is described in connection with an embodiment, implementing such feature, structure, or characteristic in connection with other embodiments (whether or not explicitly described) should be within the knowledge of those skilled in the relevant art.

[0038] Generally, terms can be understood, at least in part, from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood to not necessarily be intended to convey a set of exclusive factors, but rather, at least in part depending on the context, to allow for the existence of other factors that may not be explicitly described.

[0039] It can be understood that the meanings of "on", "above", and "over" in the present invention should be construed in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0040] Furthermore, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the figures. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the figures. The device may be oriented in another way, and the spatial relative descriptive terms used herein may be interpreted accordingly.

[0041] Such as Figures 1 to 12As shown in the figure, an embodiment of the present invention provides a fixture device for a numerically controlled machine tool, including 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. Three groups of auxiliary components 4 are provided, and the sizes of the three groups of auxiliary components 4 increase sequentially from top to bottom. A group of clamping components 5 arranged in a circular array are slidably connected to each of the three groups of auxiliary components 4, and the sizes of the three groups of clamping components 5 increase sequentially from top to bottom. Adjacent two auxiliary components 4 are inserted into each other. 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. 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 an operator needs to process a workpiece, first, the auxiliary component 4 with the largest size needs to be placed on the processing platform 11. Then, the operator needs to select the auxiliary component 4 with the corresponding size according to the size of the workpiece. After the installation of the auxiliary component 4 with the corresponding size is completed, the workpiece needs to be placed on the uppermost auxiliary component 4, and the workpiece is clamped by the clamping component 5. After the workpiece is stably clamped, at this time, 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 by extending the hydraulic cylinder 3, multiple auxiliary components 4 are simultaneously lifted and separated from each other. At this time, the operator can sequentially remove and place the multiple auxiliary components 4.

[0042] As an implementation manner in this embodiment, as Figures 1 to 8As shown, the auxiliary component 4 includes a cover plate 41, the cover plate 41 is fixedly connected to the housing 42, a guide hole 414 is provided at the middle position between the cover plate 41 and the housing 42, an oil storage chamber 43 is provided between the cover plate 41 and the housing 42, a guide hole 414 is provided at the middle position of the oil storage chamber 43, an auxiliary plate 44 is rotatably connected to the outside of the oil storage chamber 43, a group of annularly arrayed first sliding grooves 411 are formed in the cover plate 41, a first slot 412 is formed in 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 sliding grooves 411, the bottom of the sealed quick-release female head 413 is communicated with the oil storage chamber 43, a first plug rod 421 is fixedly connected to the bottom of the housing 42, a sealed quick-release male head 422 is fixedly connected to the bottom of the housing 42, the first plug rod 421 is located directly below the first sliding groove 411, 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 communicated with the oil storage chamber 43, the oil storage chamber 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 in the housing 42, a first toothed plate 433 is limited and slidably connected to the top of the first oil storage rod 431, one end of a first piston rod 432 in the first oil storage rod 431 is fixedly connected to one end of the first toothed plate 433, a first gear 441 is fixedly connected to the bottom of the auxiliary plate 44, the first toothed plate 433 is meshed with the first gear 441, a scroll 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 in the upper auxiliary component 4 among two adjacent auxiliary components 4 are respectively inserted into the first slot 412 and the sealed quick-release female head 413 in the lower auxiliary component 4, the first plug rod 421 and the sealed quick-release male head 422 in the lowermost 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 installing the auxiliary component 4 with the largest size on the processing platform 11, first, the first plug rod 421 at the bottom of the housing 42 needs to be inserted into the first slot 412 on the processing platform 11. As the housing 42 descends, the sealed quick-release male head 422 will be inserted into the sealed quick-release female head 413 on the processing platform 11. When the bottom of the housing 42 touches the processing platform 11, at this time, 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 have sealing performance, and the oil fluid cannot flow out alone from the insertion end of the sealed quick-release male head 422 and the sealed quick-release female head 413. According to the actual size of the workpiece, select the auxiliary component 4 with medium size or the auxiliary component 4 with the smallest size. When selecting the auxiliary component 4 with medium size, only need to place the auxiliary component 4 with medium size above the auxiliary component 4 with the largest size.Insert the first plug rod 421 and the sealed quick-release male connector 422 of the medium-sized auxiliary component 4 into the first slot 412 and the sealed quick-release female connector 413 in the largest-sized auxiliary component 4, so that the sealed quick-release male connector 422 in the medium-sized auxiliary component 4 and the sealed quick-release female connector 413 in the largest-sized auxiliary component 4 are connected. At this time, when the clamping component 5 needs to clamp the workpiece, just place the workpiece on the medium-sized cover plate 41. Then, the machine tool body 1 will flow the oil through the sealed quick-release female connector 413 in the processing platform 11 into the sealed quick-release male connector 422 in the largest-sized auxiliary component 4, so that the oil can 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 largest-sized auxiliary component 4, it will enter the first oil storage rod 431 through the hose, thereby pushing the first piston rod 432 and moving the first toothed plate 433. When the first toothed plate 433 moves, it will rotate the auxiliary plate 44 through the first gear 441. When the auxiliary plate 44 rotates, the clamping component 5 in the largest-sized auxiliary component 4 will gradually tighten and clamp on the surface of the medium-sized auxiliary component 4. At this time, since the clamping component 5 in the largest-sized auxiliary component 4 is clamped on the medium-sized auxiliary component 4, it cannot move further. At this time, the first toothed plate 433 stops moving, so that the oil that later enters the oil storage bin 43 of the largest-sized auxiliary component 4 will all enter the oil storage bin 43 of the medium-sized auxiliary component 4, and at the same time drive the auxiliary plate 44 in the medium-sized auxiliary component 4 to rotate, so that the clamping component 5 on the medium-sized auxiliary component 4 moves to clamp the workpiece. When the size of the workpiece to be processed is small, only need to install the smallest-sized auxiliary component 4 on the medium-sized auxiliary component 4. Clamp the medium-sized auxiliary component 4 through the largest-sized auxiliary component 4, then clamp the smallest-sized auxiliary component 4 through the medium-sized auxiliary component 4, and finally clamp the workpiece through the smallest-sized auxiliary component 4 to realize the clamping of the workpiece.,

[0043] In this embodiment, as Figures 1 to 8 shown, when processing the workpiece, observe the size of the workpiece, and then select the auxiliary component 4 of the corresponding size, 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 too large or too 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 fixture of the corresponding size can be selected faster. During installation, only need to dock up and down to complete the installation, and the operation steps are simple, avoiding complex operations.

[0044] 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. 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 inserted into the guide holes 414 in the corresponding auxiliary components 4. 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. After the workpiece is processed and taken out, the clamping component 5 loses its 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 largest guide hole 414. 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 in the smallest auxiliary component 4, as the movable rod continues to extend, the second-to-last diameter section of the movable rod will lift up the smallest auxiliary component 4 at the top, thereby realizing the separation between the two adjacent auxiliary components 4.

[0045] 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 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. This not only can quickly achieve the separation between the two adjacent auxiliary components 4, making it convenient for 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 subsequent use.

[0046] As an implementation method in this embodiment, Figures 8 to 12As shown, the clamping assembly 5 includes a first clamping head 51. Second clamping heads 52 are rotatably connected to both sides of the first clamping head 51. Support rods 53 are rotatably connected to the inclined slots 511 on both sides of the first clamping head 51. One end of the support rod 53 is limited and 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 to the first chute 411. The auxiliary block 55 is slidably connected to the auxiliary plate 44 through the scroll plate 442. A ball head 531 is fixedly connected to one end of the support rod 53. The ball head 531 is limited and slidably connected to the limit groove 521 of the second clamping head 52. A group of evenly spaced serrated structures are provided at the other end of the support rod 53. The support rod 53 is meshed and connected to the second toothed plate 532 through the serrated structure at the top. The bottom of the second toothed plate 532 is fixedly connected to the second piston rod 533. A first spring 534 is sleeved on the second piston rod 533. A baffle 541 is fixedly connected to the top of the first slider 54. A third piston rod 542 is fixedly connected to one side of the baffle 541. A first oil storage tank 512 is opened 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 communicated with the second oil storage tanks 513. The second piston rod 533 is slidably connected to the second oil storage tank 513. 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 sliders 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 located on both sides of the first clamping head 51 will simultaneously contact the surface of the workpiece. 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, resulting in the support rod 53 being unable to rotate. When the support rod 53 cannot move, the second 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. Further, at this time, the third piston rod 542 can only remain stationary, and through the first slider 54, the auxiliary block 55 is stopped from moving, and the auxiliary plate 44 is stopped from rotating. At this time, the four clamping assemblies 5 will tightly clamp on the surface of the workpiece, keeping the workpiece stable during processing. When the workpiece is cylindrical, when the first clamping head 51 touches the surface of the cylinder, the second clamping heads 52 located on both sides of the first clamping head 51 do not contact the surface of the workpiece. As the auxiliary plate 44 rotates, the auxiliary block 55 will drive 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 will push the second piston rod 533. When the second piston rod 533 moves,The second toothed plate 532 drives the support rod 53 through a serrated structure. When one end of the support rod 53 rotates, the other end slides in the limit 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.

[0047] In this embodiment, as Figures 8 to 12 shown, when processing the workpiece, the cooperation between the first clamping head 51 and the second clamping head 52 can clamp the workpiece. Further, when encountering a cylindrical workpiece or a square workpiece, there is no need to replace the clamping head, and the workpiece can be clamped more conveniently.

[0048] The working principle of the technical solution provided by the present invention is as follows:

[0049] When an operator needs to process a workpiece, first, the auxiliary component 4 with the largest size needs to be placed on the processing platform 11. Then, the operator needs to select the auxiliary component 4 with the corresponding size according to the size of the workpiece. After the installation of the auxiliary component 4 with the corresponding size is completed, the workpiece needs to be placed on the uppermost auxiliary component 4, and the workpiece is clamped by the clamping component 5. After the workpiece is clamped stably, at this time, 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 through the elongation of the hydraulic cylinder 3, multiple auxiliary components 4 rise simultaneously and separate from each other. At this time, the operator can remove and place the multiple auxiliary components 4 in turn.

[0050] When installing the auxiliary component 4 with the largest size on the processing platform 11, first, the first insertion rod 421 at the bottom of the housing 42 needs to be inserted into the first slot 412 of the processing platform 11. As the housing 42 descends, the sealed quick-release male connector 422 will be inserted into the sealed quick-release female connector 413 of the processing platform 11. When the bottom of the housing 42 touches the processing platform 11, at this time, the sealed quick-release male connector 422 and the sealed quick-release female connector 413 complete the sealed connection. The single sealed quick-release male connector 422 and the sealed quick-release female connector 413 have sealing performance, and the oil fluid cannot flow out separately from the insertion end of the sealed quick-release male connector 422 and the sealed quick-release female connector 413. According to the size of the actual workpiece, select the auxiliary component 4 with medium size or the auxiliary component 4 with the smallest size. When selecting the auxiliary component 4 with medium size, only need to place the auxiliary component 4 with medium size above the auxiliary component 4 with the largest size, and make the first insertion rod 421 and the sealed quick-release male connector 422 of the auxiliary component 4 with medium size be inserted into the first slot 412 and the sealed quick-release female connector 413 in the auxiliary component 4 with the largest size, so that the sealed quick-release male connector 422 in the auxiliary component 4 with medium size and the sealed quick-release female connector 413 in the auxiliary component 4 with the largest size complete the connection. At this time, when the clamping component 5 needs to clamp the workpiece, only need to place the workpiece on the cover plate 41 with medium size, and then the machine tool body 1 will flow the oil fluid into the sealed quick-release male connector 422 in the auxiliary component 4 with the largest size through the sealed quick-release female connector 413 in the processing platform 11, so that the oil fluid can enter the oil storage bin 43. When the oil fluid enters the oil storage bin 43, part of the oil fluid will enter the oil storage bin 43 of the auxiliary component 4 with medium size through the sealed quick-release joint. When the oil fluid enters the oil storage bin 43 of the auxiliary component 4 with the largest size, it will enter the first oil storage rod 431 through the hose, thereby pushing the first piston rod 432 and making the first toothed plate 433 move. When the first toothed plate 433 moves, it will make the auxiliary plate 44 rotate through the first gear 441. When the auxiliary plate 44 rotates, it will make the clamping component 5 in the auxiliary component 4 with the largest size gradually tighten and clamp on the surface of the auxiliary component 4 with medium size. At this time, the clamping component 5 located in the auxiliary component 4 with the largest size cannot move further because it is clamped on the auxiliary component 4 with medium size. At this time, the first toothed plate 433 stops moving, so that all the oil fluid that later enters the oil storage bin 43 of the auxiliary component 4 with the largest size will enter the oil storage bin 43 of the auxiliary component 4 with medium size, and at the same time drive the auxiliary plate 44 in the auxiliary component 4 with medium size to rotate, so that the clamping component 5 located on the auxiliary component 4 with medium size moves to realize the clamping of the workpiece. When the size of the processed workpiece is small, only need to install the auxiliary component 4 with the smallest size on the auxiliary component 4 with medium size. Clamp the auxiliary component 4 with medium size through the auxiliary component 4 with the largest size, and then clamp the auxiliary component 4 with the smallest size through the auxiliary component 4 with medium size.Finally, the workpiece is clamped by the minimum-size auxiliary component 4 to achieve clamping of the workpiece. When machining the workpiece, by observing the size of the workpiece, the corresponding-size auxiliary component 4 is selected, so that the clamping component 5 in the corresponding-size auxiliary component 4 can clamp the workpiece more stably, avoiding frequent disassembly of the fixture when the workpiece is too large or too small, which not only increases the workload of the operator, but also delays the machining time of the workpiece and affects the machining efficiency. Further, by providing multiple auxiliary components 4, when clamping the workpiece, the corresponding-size fixture can be selected more quickly. During installation, only vertical docking is required to complete the installation, and the operation steps are simple, avoiding complex operations.

[0051] When the workpiece is removed after machining, at this time, the clamping component 5 loses the clamping of the auxiliary component 4 and the workpiece. At the same time, the movable rod of the hydraulic cylinder 3 starts to extend and gradually inserts into the largest-size guide hole 414. As the movable rod extends, the shortest-diameter section of the movable rod will pass through the smallest-size guide hole 414. When the second-shortest-diameter section passes through the medium-size guide hole 414 and abuts against the bottom of the housing 42 in the smallest-size auxiliary component 4, as the movable rod continues to extend, the second-shortest-diameter section of the movable rod will push up the uppermost smallest-size auxiliary component 4 to achieve separation between adjacent two auxiliary components 4. After the workpiece is machined, since the connection between adjacent two auxiliary components 4 is relatively tight, by the extension of the hydraulic cylinder 3, the movable rod can gradually separate the connected auxiliary components 4 to create a gap between them, and at the same time, when the quick-release male seal head 422 and the quick-release female seal head 413 are separated, they maintain a vertically upward state. This can not only quickly separate adjacent two auxiliary components 4, facilitating the operator to collect each auxiliary component 4, but also protects the safety of the quick-release male seal head 422 and the quick-release female seal head 413, avoiding shaking during the manual separation process by the operator, which may damage the sealing performance between the quick-release male seal head 422 and the quick-release female seal head 413 and affect subsequent use.

[0052] When the workpiece to be processed is square, as the auxiliary plate 44 rotates, the four auxiliary blocks 55 on the auxiliary plate 44 will move synchronously, so that the four first sliders 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 simultaneously contact the surface of the workpiece. 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, resulting in the support rod 53 being unable to rotate. When the support rod 53 cannot move, the second 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. Further, at this time, the third piston rod 542 can only remain stationary, and through the first slider 54, the auxiliary block 55 is stopped from moving, and the auxiliary plate 44 is stopped from rotating. At this time, the four clamping assemblies 5 will tightly clamp the surface of the workpiece, keeping the workpiece stable during processing. When the workpiece is cylindrical, when the first clamping head 51 touches the surface of the cylinder, the second clamping heads 52 on both sides of the first clamping head 51 do not contact the surface of the workpiece. As the auxiliary plate 44 rotates, the auxiliary block 55 will drive 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 will push the second piston rod 533. When the second piston rod 533 moves, the second toothed plate 532 will drive the support rod 53 to rotate through the serrated structure. When one end of the support rod 53 rotates, the other end will slide in the limit groove 521 of the second clamping head 52 through the ball head 531. 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 processing the workpiece, the cooperation between the first clamping head 51 and the second clamping head 52 can clamp the workpiece. Further, when encountering a cylindrical workpiece or a square workpiece, there is no need to replace the clamping head to clamp the workpiece, which is more convenient.

[0053] The present invention covers any substitutions, modifications, equivalent methods and solutions made within the spirit and scope of the present invention. For the purpose of enabling the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. In addition, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0054] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A fixture device for a numerically controlled machine tool, characterized in that, It includes a machine tool body, on the top of the machine tool body is slidably connected a processing head, inside the machine tool body is provided a hydraulic cylinder, in the machine tool body is provided a processing platform, on the processing platform is provided an auxiliary component, the auxiliary component is used to assist workpieces of different sizes to be clamped by a clamping component, the clamping component is slidably connected to the auxiliary component, there are three groups of auxiliary components, the sizes of the three groups of auxiliary components increase sequentially from top to bottom, on each of the three groups of auxiliary components is slidably connected a group of clamping components arranged in a circular array, the sizes of the three groups of clamping components increase sequentially from top to bottom, adjacent two auxiliary components are inserted into each other, in the middle of the processing platform is opened an auxiliary groove, 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; The auxiliary component includes a cover plate, the cover plate is fixedly connected to a housing, in the middle position between the cover plate and the housing is provided a guiding hole, between the cover plate and the housing is provided an oil storage chamber, in the middle position of the oil storage chamber is provided a guiding hole, and the outer side of the oil storage chamber is rotatably connected with an auxiliary plate; On the cover plate are opened a group of first sliding grooves arranged in a circular array, on the cover plate is opened a first insertion slot, on the cover plate is provided a quick-release sealing female head, the first insertion slot and the quick-release sealing female head are respectively located between two adjacent first sliding grooves, and the bottom of the quick-release sealing female head is communicated with the oil storage chamber; At the bottom of the housing is fixedly connected a first insertion rod, at the bottom of the housing is fixedly connected a quick-release sealing male head, the first insertion rod is located directly below the first sliding groove, the quick-release sealing male head is located directly below the quick-release sealing female head, and the top of the quick-release sealing male head is communicated with the oil storage chamber; The oil storage chamber is connected to a first oil storage rod through a hose, the bottom of the first oil storage rod is fixedly connected in the housing, the top of the first oil storage rod is limited and slidably connected with a first toothed plate, one end of a first piston rod in the first oil storage rod is fixedly connected to one end of the first toothed plate, at the bottom of the auxiliary plate is fixedly connected a first gear, the first toothed plate is meshed with the first gear, at the top of the auxiliary plate is fixedly connected a scroll plate, and the clamping component is slidably connected to the auxiliary plate through the scroll plate; The first insertion rod and the quick-release sealing male head in the upper of the adjacent two auxiliary components are respectively inserted into the first insertion slot and the quick-release sealing female head in the lower auxiliary component, and the first insertion rod and the quick-release sealing male head in the lowermost auxiliary component are respectively inserted into the first insertion slot and the quick-release sealing female head on the processing platform.

2. The fixture device for a numerically controlled machine tool according to claim 1, characterized in that, The diameters of the guiding holes in the three groups of auxiliary components increase sequentially from top to bottom, the movable rod of the hydraulic cylinder has four sections, the diameters of the four sections of the movable rod in the hydraulic cylinder increase sequentially from top to bottom, the uppermost three sections of the movable rod in the hydraulic cylinder are respectively inserted into the guiding holes in the corresponding auxiliary components, and the diameter of the lowermost section of the movable rod in the hydraulic cylinder is larger than the diameter of the guiding hole in the lowermost auxiliary component.

3. The fixture device for a numerically controlled machine tool according to claim 2, wherein, The clamping assembly includes a first clamping head, second clamping heads are rotatably connected to both sides of the first clamping head, support rods are rotatably connected to inclined grooves on both sides of the first clamping head, one end of each support rod is connected to the second clamping head in a limited sliding manner, the first clamping head is slidably connected to a first slider, the bottom of the first slider is fixedly connected to the top of an auxiliary block, the first slider is slidably connected to a first chute, and the auxiliary block is slidably connected to an auxiliary plate through a scroll plate.

4. The fixture device for a numerically controlled machine tool according to claim 3, characterized in that, One end of the support rod is fixedly connected with a ball head, the ball head is connected to a limiting groove of the second clamping head in a limited sliding manner, the other end of the support rod is provided with a set of evenly spaced serrated structures, the support rod is meshed and connected with a second toothed plate through the serrated structure at the top, the bottom of the second toothed plate is fixedly connected with a second piston rod, a first spring is sleeved on the second piston rod, the top of the first slider is fixedly connected with a baffle, and a third piston rod is fixedly connected to one side of the baffle.

5. The fixture device for a numerically controlled machine tool according to claim 4, characterized in that, A first oil storage tank is opened inside the first clamping head, the third piston rod is slidably connected to 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 communicated with the second oil storage tanks, and the second piston rod is slidably connected to the second oil storage tanks.

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