Positioning fixture for spindle machining

Abstract

This invention provides a positioning fixture for spindle machining, belonging to the field of machining technology. It includes a frame, a worktable mounted at the top of the frame, a spindle mounted on one side of the frame, a housing mounted on the outer side of the frame, a control module mounted on one side of the housing, a clamping chuck mounted at the top of the worktable, and a pin seat mounted at the top of the worktable. This invention, by setting up a support assembly, uses four sets of follower wheels to support the middle section of the blank at multiple points, forming a uniform radial support force, effectively improving the stability of the blank after clamping, reducing swaying and offset caused by the blank being suspended during machining. Relying on the liquid damping energy dissipation characteristics of the damping flow holes, combined with the flexible buffering and liquid extrusion shock absorption effect of the honeycomb plate, it can absorb cutting vibrations during machining in multiple stages, suppressing the resonance problem between the workpiece and the fixture, and improving the machining accuracy and surface quality of the spindle and workpiece.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a positioning fixture for spindle machining. Background Technology

[0002] As modern manufacturing rapidly develops towards higher precision, higher efficiency, automation, and flexibility, the machining accuracy of various precision spindles continues to improve, placing more stringent requirements on positioning accuracy, clamping stability, repeatability, and fixture adaptability during the machining process.

[0003] Currently, in the machining process of spindle components, it is usually necessary to use machining equipment to perform drilling and milling operations on the spindle blank. Existing machining methods typically only use chucks and ejector pins to achieve a clamping and ejecting method, lacking an auxiliary support structure for the middle section of the blank. During high-speed cutting of the spindle, continuous high-frequency mechanical vibration is generated. Most existing fixtures do not have vibration damping structures and only use a single simple vibration damping method, which has limited vibration damping effect. Machining vibration cannot be effectively attenuated, and the vibration force will be transmitted to the surface of the workpiece and the tool, generating resonance, causing tool cutting instability, and causing machining defects on the outer machined parts of the workpiece. This seriously reduces the machining accuracy and surface quality of the spindle. Furthermore, traditional vibration damping structures mostly use static damping fluid damping mode, and the frictional heat generated during machining will continue to accumulate inside the damping structure, leading to performance degradation.

[0004] Therefore, this application provides a positioning fixture for spindle machining to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a positioning fixture for spindle machining to solve the problem of continuous high-frequency mechanical vibration generated during high-speed cutting of existing spindles. Most existing fixtures do not have a vibration damping structure and only use a single simple vibration damping method, which has a limited vibration damping effect. The vibration force is transmitted to the surface of the workpiece and the tool, resulting in resonance, causing unstable cutting of the tool, and causing machining defects on the outer machining parts of the workpiece. This seriously reduces the machining accuracy and surface quality of the spindle. Furthermore, traditional vibration damping structures mostly use static damping fluid damping mode, and the frictional heat generated during machining will continue to accumulate inside the damping structure, leading to performance degradation.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A positioning fixture for spindle machining includes a frame, a worktable mounted on the top of the frame, a tool shaft mounted on one side of the frame, a housing mounted on the outer side of the frame, a control module mounted on one side of the housing, a clamping chuck mounted on the top of the worktable, an ejector pin seat mounted on the top of the worktable, a circulation assembly mounted on the top of the worktable and between the clamping chuck and the ejector pin seat, the circulation assembly being used for circulating damping fluid, a support assembly mounted inside the circulation assembly, the support assembly being used for supporting and carrying the machining blank, and an adjustment assembly mounted on the side wall of the circulation assembly, the adjustment assembly being used for adjusting the working height of the support assembly and locking the support assembly.

[0007] Optionally, the circulation assembly includes a base plate mounted on the top of the workbench, with two mounting boxes symmetrically mounted on the top of the base plate, each of the mounting boxes being adjustable by sliding on the top of the base plate.

[0008] Optionally, a honeycomb panel is fixedly installed on the inner side of each mounting box, a cover plate is installed on the top of the mounting box, and one side of each of the two mounting boxes is connected to the interface of a diversion valve through a pipeline. The diversion valve is fixedly installed on one side of the frame.

[0009] Optionally, a circulation pump is connected to one side of the diversion valve via a pipeline, and a storage tank is connected to one side of the circulation pump via a pipeline. One-way valves are installed on the other side of the two mounting boxes, and the two one-way valves are connected to the storage tank via pipelines.

[0010] Optionally, the support assembly includes a first mounting plate and a second mounting plate, which rotate relative to each other inside the mounting box, and damping flow holes are equidistantly distributed on the surfaces of the first mounting plate and the second mounting plate.

[0011] Optionally, follower wheels are respectively installed at the ends of the first mounting plate and the second mounting plate, and sealing blocks are respectively sleeved on the outer sides of the first mounting plate and the second mounting plate.

[0012] Optionally, the two sealing blocks slide on the surfaces of mounting plate one and mounting plate two, respectively, and the two sealing blocks and the cover plate are connected by a sealing sleeve. One end of mounting plate one is fixedly connected to rack one, and one end of mounting plate two is fixedly connected to rack two.

[0013] Optionally, the adjustment assembly includes a drive shaft and a mounting bracket. The drive shaft is nested inside the two mounting boxes respectively, and the mounting bracket is installed on the outer side wall of the two mounting boxes respectively. The drive shaft rotates on the inner side of the corresponding mounting box. Gear 1 and Gear 2 are sequentially fixedly sleeved on the outer side of the drive shaft, and Gear 1 meshes with rack 1.

[0014] Optionally, the second gear meshes with the second rack, four sealing ring grooves are symmetrically arranged on the outer side of the transmission shaft, a sealing ring is nested inside the inner side of each sealing ring groove, two sealing covers are symmetrically installed at both ends of the transmission shaft, each sealing cover is fixed to the outer side wall of the mounting box by bolts, and a limit gear ring is installed at both ends of the transmission shaft.

[0015] Optionally, pin brackets are symmetrically installed on both sides of the mounting bracket, and the two pin brackets slide on the outside of the slide rod of the mounting bracket respectively. The limiting toothed ring is engaged with the pin bracket, and the ends of the two pin brackets are respectively equipped with limiting rings II, which rotate at the ends of the corresponding pin brackets.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting up a circulation component, the damping liquid in the storage tank is pumped to the installation box by a circulation pump. The heated damping liquid in the installation box flows back to the storage tank through the pipeline for circulation and heat exchange, realizing rapid circulation and heat exchange of the damping liquid, timely removing the heat generated during processing, avoiding the damping liquid from heating up and causing a decrease in vibration reduction performance, and ensuring that the device maintains a stable vibration reduction effect over a long period of time.

[0017] By setting up a support assembly, four sets of follower wheels provide multi-point support for the middle section of the blank, forming a uniform radial support force. This effectively improves the stability of the blank after clamping, reduces swaying and offset caused by the blank being suspended during machining, and relies on the liquid damping energy dissipation characteristics of the damping flow holes. Combined with the flexible buffering and liquid extrusion shock absorption effect of the honeycomb plate, it can absorb cutting vibrations during machining in multiple stages, suppress the resonance problem between the workpiece and the fixture, and improve the machining accuracy and surface quality of the spindle workpiece.

[0018] By setting up adjustment components and using a gear and rack reverse transmission structure, the synchronous reverse opening and closing adjustment of mounting plate one and mounting plate two is achieved. The adjustment operation is convenient and can quickly adapt to the support and positioning of workpieces of different sizes. Moreover, the mechanical meshing and locking structure of the limiting gear ring and the pin frame, together with the eccentric pre-tightening secondary locking structure of the limiting ring two, form a double locking protection to prevent the support structure from loosening during processing. At the same time, a composite sealing structure composed of multiple sealing rings and sealing covers effectively seals the mating gaps without affecting the normal rotation adjustment of the transmission shaft, preventing damping fluid leakage and impurity intrusion, ensuring the long-term stable operation of the transmission structure and sealing structure, and reducing the equipment failure rate. Attached Figure Description

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0020] Figure 1 A three-dimensional structural diagram of a positioning fixture for spindle machining; Figure 2 A schematic diagram of a doorless positioning fixture for spindle machining; Figure 3 This is a schematic diagram of the three-dimensional structure of the loop component; Figure 4 This is a sectional view of the three-dimensional structure of the loop component; Figure 5 A schematic diagram of the three-dimensional assembly of the circulation component and the support component; Figure 6 A schematic diagram of the three-dimensional structure for assembling the supporting and adjusting components; Figure 7 A three-dimensional sectional view of the assembly of supporting and adjusting components; Figure 8 Cross-sectional view of the three-dimensional structure of the mounting plate and damping flow hole assembly; Figure 9 A schematic diagram of the three-dimensional structure of the adjustment component; Figure 10 for Figure 8 Enlarged schematic diagram of the three-dimensional structure of A in the middle; Figure 11 A schematic diagram of the three-dimensional assembly structure of the mounting bracket, pin bracket, and limiting ring; Figure 12 A schematic diagram of the three-dimensional assembly structure of the drive shaft, gear one, and gear two; Figure 13 A three-dimensional structural diagram of the drive shaft, sealing ring groove, and sealing ring assembly.

[0021] Figure label: 1. Frame; 2. Worktable; 3. Spindle; 4. Housing; 5. Control module; 9. Clamping chuck; 10. Ejector pin seat; 6. Circulation assembly; 61. Base plate; 62. Mounting box; 63. Honeycomb panel; 64. Cover plate; 65. Diverter valve; 66. Circulation pump; 67. Storage tank; 68. Check valve; 7. Support assembly; 71. Mounting plate one; 72. Mounting plate two; 73. Damping flow hole; 74. Follower wheel; 75. Sealing block; 76. Sealing sleeve; 77. Rack one; 78. Rack two; 8. Adjustment assembly; 81. Drive shaft; 810. Gear 1; 811. Gear 2; 82. Mounting bracket; 83. Sealing ring groove; 84. Sealing ring; 85. Sealing cover; 86. Limiting ring 1; 87. Pin bracket; 88. Limiting ring 2.

[0022] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0023] The positioning fixture for spindle machining provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some 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.

[0024] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0025] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly 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 a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0026] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0027] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0028] like Figures 1 to 13 As shown, an embodiment of the present invention provides a positioning fixture for spindle machining, including a frame 1, a worktable 2 mounted on the top of the frame 1, a tool shaft 3 mounted on one side of the frame 1, a housing 4 mounted on the outer side of the frame 1, a control module 5 mounted on one side of the housing 4, a clamping chuck 9 mounted on the top of the worktable 2, a ejector pin seat 10 mounted on the top of the worktable 2, a circulation component 6 mounted on the top of the worktable 2, the circulation component 6 being installed between the clamping chuck 9 and the ejector pin seat 10, the circulation component 6 being used for circulating and conveying damping fluid, a support component 7 mounted on the inner side of the circulation component 6, the support component 7 being used for supporting and carrying the machining blank, and an adjustment component 8 mounted on the side wall of the circulation component 6, the adjustment component 8 being used for adjusting the working height of the support component 7 and locking the support component 7.

[0029] like Figures 2 to 5 As shown, the circulation component 6 includes a base plate 61, which is mounted on the top of the workbench 2. Two mounting boxes 62 are symmetrically mounted on the top of the base plate 61. Each mounting box 62 can slide and adjust on the top of the base plate 61. A honeycomb plate 63 is fixedly mounted on the inner side of each mounting box 62. The honeycomb plate 63 is made of silicone material, which has good resilience and avoids plastic deformation caused by vibration. A cover plate 64 is mounted on the top of the mounting box 62. One side of each of the two mounting boxes 62 is connected to the interface of a diversion valve 65 through a pipeline. The diversion valve 65 is fixedly mounted on one side of the frame 1. One side of the diversion valve 65 is connected to a circulation pump 66 through a pipeline. One side of the circulation pump 66 is connected to a storage tank 67 through a pipeline. One-way valves 68 are respectively mounted on the other side of the two mounting boxes 62. The two one-way valves 68 are respectively connected to the storage tank 67 through pipelines.

[0030] By setting up the circulation component 6, the two sets of mounting boxes 62 are slidably installed based on the base plate 61. The distance between the two sets of mounting boxes 62 can be flexibly adjusted according to the outer diameter of the blank workpiece to adapt to the support and vibration reduction requirements of different specifications of workpieces. During the equipment processing, the circulation pump 66 provides stable pumping power, and the room temperature damping liquid inside the storage tank 67 is evenly distributed through the diversion valve 65 and delivered to the inside of the two mounting boxes 62, realizing liquid replenishment and heat exchange between the two mounting boxes 62 and the storage tank 67. Utilizing the one-way conduction characteristic of the one-way valve 68, the high temperature damping liquid inside the mounting box 62 after being heated can flow back to the storage tank 67 in one direction to complete mixing and cooling, realizing the closed-loop recycling of the damping liquid. Compared with the traditional fixed damping vibration reduction structure, it can continuously maintain the constant temperature working state of the damping liquid, avoiding the problem of performance degradation and damping force reduction of the damping liquid due to long-term high temperature operation, and continuously ensuring uniform and stable vibration reduction effect.

[0031] like Figures 6 to 9 As shown, the support assembly 7 includes a first mounting plate 71 and a second mounting plate 72. The first mounting plate 71 and the second mounting plate 72 rotate relative to each other inside the mounting box 62. Damping flow holes 73 are equidistantly distributed on the surfaces of the first mounting plate 71 and the second mounting plate 72. Follower wheels 74 are respectively installed at the ends of the first mounting plate 71 and the second mounting plate 72. Sealing blocks 75 are respectively fitted on the outer sides of the first mounting plate 71 and the second mounting plate 72. The two sealing blocks 75 slide on the surfaces of the first mounting plate 71 and the second mounting plate 72. The two sealing blocks 75 and the cover plate 64 are connected by a sealing sleeve 76. The sealing sleeve 76 is made of rubber and is used to prevent cutting fluid and iron filings from falling into the mounting box 62 from the opening of the cover plate 64 during the processing, thus preventing contamination of the damping fluid. A rack 77 is fixedly connected to one end of the first mounting plate 71, and a rack 78 is fixedly connected to one end of the second mounting plate 72.

[0032] By setting up support component 7 and adopting an openable support structure with relative rotation between mounting plate 1 71 and mounting plate 2 72, combined with a reverse transmission design, the spacing of the end follower wheels 74 can be adjusted. The follower wheels 74 can fit against the outer wall of blanks with different outer diameters, forming a symmetrical X-shaped multi-point support structure, which forms a stable radial support constraint on the middle section of the blank, effectively improving the defects of uneven force distribution and easy eccentric shaking of the workpiece in traditional single-point support. At the same time, the damping flow holes 73 equidistantly arranged on the surfaces of mounting plate 1 71 and mounting plate 2 72 can allow damping fluid to repeatedly pass through the holes when the mounting plate is vibrated and shaken, using the viscous resistance of the liquid to consume the vibration kinetic energy and achieve efficient vibration reduction. Combined with the flexible honeycomb buffer structure of honeycomb plate 63, it can absorb the residual vibration impact in the secondary stage, disperse the vibration force, and avoid the concentrated accumulation of vibration.

[0033] like Figures 9 to 13As shown, the adjustment assembly 8 includes a drive shaft 81 and a mounting bracket 82. The drive shaft 81 is nested inside two mounting boxes 62, and the mounting bracket 82 is mounted on the outer walls of the two mounting boxes 62. The drive shaft 81 rotates inside the corresponding mounting box 62. Gear 1 810 and gear 2 811 are sequentially fixedly sleeved on the outer side of the drive shaft 81. Gear 1 810 meshes with rack 1 77, and gear 2 811 meshes with rack 2 78. Four sealing ring grooves 83 are symmetrically arranged on the outer side of the drive shaft 81. Each sealing ring groove 83... A sealing ring 84 is nested inside the drive shaft 81. Two sealing covers 85 are symmetrically installed at both ends of the drive shaft 81. Each sealing cover 85 is fixed to the outer wall of the mounting box 62 by bolts. Limiting ring 86 is installed at both ends of the drive shaft 81. Pin brackets 87 are symmetrically installed on both sides of the mounting bracket 82. The two pin brackets 87 slide on the outside of the slide rod of the mounting bracket 82. The limiting ring 86 and the pin bracket 87 are engaged with each other. Limiting ring 88 is installed at the ends of the two pin brackets 87. The limiting ring 88 rotates at the ends of the corresponding pin brackets 87.

[0034] By setting the adjustment component 8, gears 810 and 811, coaxially fixed to the transmission shaft 81, mesh with racks 77 and 78 respectively in a staggered manner, forming a stable reverse transmission mechanism. The rotation of a single transmission shaft 81 can synchronously drive the two mounting plates to open and close in opposite directions. The adjustment operation is simple and efficient, allowing for rapid adjustment of the workpiece support spacing. After adjustment, the transmission shaft 81 is mechanically locked by the engagement of the pin bracket 87 with the tooth groove of the limiting ring 86, fixing the opening and closing spacing of the support structure and eliminating... To address the issue of support loosening caused by transmission clearance, the limiting plane of the second limiting ring 88 is rotated and pressed for positioning, achieving secondary pre-tightening and locking. This significantly improves the structural locking stability and eliminates the problems of mechanism loosening and positioning deviation caused by machining vibration. At the same time, multiple sets of sealing rings 84 on the outside of the transmission shaft 81, together with the sealing covers 85 at both ends, form a double sealing system. This system can completely seal the mating gap between the transmission shaft 81 and the mounting box 62, effectively preventing internal damping fluid leakage and blocking external machining debris and coolant from entering the transmission mating gap, thus avoiding transmission structure jamming.

[0035] The working principle of the technical solution provided by this invention is as follows: The operator first opens the cabinet door of the housing 4, places the base plate 61 on the workbench 2, and secures it with bolts. Then, the two mounting boxes 62 are aligned with the grooves in the base plate 61 and slid along the grooves to the top of the base plate 61. The diameter of the blank is adjusted as needed. A special wrench is used to rotate the ends of the drive shafts 81 of the two mounting boxes 62, thereby driving the drive shafts 81 and the coaxially connected gears 810 and 811 within the two mounting boxes 62 to rotate synchronously and in the same direction. Figure 5 and Figure 6 As shown, the lower tooth blocks of rack 77 and gear 810 mesh, and the upper tooth blocks of rack 78 and gear 811 mesh. The meshing positions of the two tooth blocks are staggered, forming a reverse transmission structure. When gear 1 810 and gear 2 811 rotate in the same direction, they will drive rack 1 77 and rack 2 78 to swing in opposite directions around the rotation center of the corresponding mounting plate 1 71 and mounting plate 2 72. This will cause the mounting plate 1 71 and mounting plate 2 72 to swing and adjust towards each other and outward within the corresponding mounting box 62, thereby adjusting the distance between the follower wheels 74 at the ends of mounting plate 1 71 and mounting plate 2 72 and providing contact support for workpieces of different sizes. Subsequently, the operator uses hoisting equipment to lift the blank to be processed to the top of the frame 1, and slowly lowers the blank to the top of the worktable 2. The blank is then slowly lowered until the outer wall of the blank is completely in contact with the surface of the four follower wheels 74 at the ends of the two sets of mounting plates 71 and 72. After two sets of reverse opening and closing adjustment, mounting plates 71 and 72 form a stable X-shaped support structure, with the left and right sides symmetrically pressing against the sides of the blank. Through multi-point contact, a uniform radial support force is formed, which stably lifts the blank and positions it at the center of the worktable 2. When the blank support structure adjustment is completed, the operator pushes the pin bracket 87 towards the mounting box 62, causing the pin bracket 87 to slide along the slide rail track of the mounting bracket 82. As the pin bracket 87 moves forward, the pin structure at its end precisely engages in the tooth groove gap of the limiting ring 86. Using the mechanical limiting method of tooth block engagement, the rotational freedom of the limiting ring 86 is locked. Since the limiting ring 86 and the drive shaft 81 are coaxial fixed structures, the locking of the limiting ring 86 directly restricts the rotation of the drive shaft 81, thereby locking the gear 810. The meshing transmission state with gear 811 locks the swing of rack 77 and rack 78 and the opening and closing distance of mounting plate 71 and mounting plate 72, preventing the lifting of the workpiece from loosening. Then, the operator rotates the limiting ring 88. The inner ring of the limiting ring 88 has a limiting plane structure. After rotation, the limiting plane of the inner ring of the limiting ring 88 gradually presses against the sliding rod mating part of the mounting bracket 82, generating a pre-tightening constraint force, forming a lateral limiting and pressing effect on the pin bracket 87, and performing secondary locking. Sealing blocks 75 slide on the outer sides of mounting plate 1 71 and mounting plate 2 72. They work together with the opposing closing and opening actions of mounting plate 1 71 and mounting plate 2 72 to prevent jamming or interference. At the same time, a sealing sleeve 76 is provided at the opening of the top cover plate 64 of the mounting box 62. The sealing sleeve 76 fits around the opening to form an annular sealing barrier, sealing the opening of the cover plate 64. During the processing, the equipment sprays coolant to cool the tool and the blank and remove chips. Some coolant will flow down the outer wall of the blank and drip down. The sealing sleeve 76 can block the coolant with iron filings and impurities from seeping into the interior of the mounting box 62 through the opening of the cover plate 64, preventing the coolant from mixing with the damping fluid and preventing the damping fluid from being contaminated by impurities. After locking is completed, the operator completely releases the lifting equipment straps on the workpiece. The operator controls the opening and closing range of the hydraulic jaws of the clamping chuck 9 through the control module 5, and adjusts the jaw spacing according to the outer diameter of the workpiece so that multiple jaws can clamp the outer surface of the workpiece simultaneously, initially achieving circumferential clamping and fixing of one end of the workpiece. After the clamping chuck 9 is positioned, the operator controls the ejector seat 10 through the control module 5, so that the ejector pin of the ejector seat 10 moves towards the workpiece through hydraulic control until the ejector pin at the end of the ejector seat 10 presses against the center hole of the end face of the workpiece. Through the axial pressing and limiting of the ejector pin, the workpiece is fixed by a clamping and pressing method. During the spindle blank machining process, the equipment will change the drill bit and milling cutter through the cutter shaft 3 to perform drilling and milling operations on the fixed outer surface of the blank. When the metal tool cuts the blank, it generates continuous friction and extrusion, which will generate machining vibration. The vibration of the blank will be directly transmitted to the follower wheel 74, and then transmitted by the four follower wheels 74 to the corresponding mounting plate 1 71 and mounting plate 2 72 respectively. The surfaces of mounting plate 1 71 and mounting plate 2 72 are distributed with multiple damping flow holes 73. Since the lower half of mounting plate 1 71 and mounting plate 2 72 is inside the mounting box 62 and immersed in damping fluid, when the vibration causes mounting plate 1 71 and mounting plate 2 72 to shake slightly, the damping flow holes 73 on the surface of mounting plate 1 71 and mounting plate 2 72 will move back and forth in the damping fluid. The damping fluid repeatedly passes through the damping flow holes 73, generating friction and resistance. This process will convert the kinetic energy of the vibration into heat energy and consume it, reducing the shaking of mounting plate 1 71 and mounting plate 2 72. Inside each mounting box 62 is a honeycomb panel 63, which surrounds the outer sides of mounting plate 1 71 and mounting plate 2 72. The residual vibration transmitted will directly act on the honeycomb panel 63. The honeycomb panel 63 made of silicone has a hexagonal lattice structure. When the vibration is transmitted to the surface of the hexagonal lattice of the honeycomb panel 63, the flexible silicone material has its own buffering and shock absorption capacity, which can initially absorb the vibration impact. At the same time, the hexagonal hollow cavity immersed in the damping fluid will be squeezed by the vibration, squeezing the damping fluid separated in the hexagonal lattice structure. The viscous resistance generated by the liquid entering and leaving the hexagonal cavity further disperses and buffers the residual vibration, avoids the concentration and accumulation of vibration force, and avoids the situation of aggravated local vibration of the equipment. During the equipment processing, heat is continuously generated. This heat is continuously transferred to the interior of the mounting box 62 through the combined structure of the follower wheel 74, mounting plate 71, and mounting plate 72, causing the damping fluid inside the mounting box 62 to heat up. The operator can start the circulation pump 66 through the control module 5. After the circulation pump 66 starts working, it generates pumping power to draw out the normal damping fluid in the storage tank 67 through the delivery pipeline. The damping fluid first flows through the diversion valve 65, which distributes the flow rate of the damping fluid. Then, it is continuously introduced into the internal cavity of the mounting box 62 through the pipeline. The newly flowing low-temperature damping fluid continuously fills the internal space of the mounting box 62. The high-temperature damping fluid inside the mounting box 62, which originally absorbed heat and heated up, is squeezed. Under the action of liquid pressure, the high-temperature damping fluid inside the mounting box 62 will be discharged outward through the one-way valve 68 and pipeline connected to one side of the mounting box 62. The one-way valve 68 has a one-way conduction characteristic, which only allows the old liquid in the mounting box 62 to flow back to the storage tank 67, preventing liquid backflow. The high-temperature damping fluid discharged from the mounting box 62 will flow back to the storage tank 67 through the pipeline, mix and exchange heat with the low-temperature damping fluid inside the storage tank 67, and cool down, completing the liquid circulation and exchange, avoiding the static damping fluid from heating up and failing after long-term operation, and reducing the vibration reduction effect. Four sealing ring grooves 83 are symmetrically formed on the outer side of the drive shaft 81. Each sealing ring groove 83 contains a sealing ring 84. The sealing ring grooves 83 can precisely limit the sealing ring 84, preventing it from falling off. Through the multiple sealing rings 84 layer by layer fitting the gap between the drive shaft 81 and the mounting box 62, a sealing barrier is formed. At the same time, two sealing covers 85 are symmetrically mounted at both ends of the drive shaft 81. The sealing covers 85 are fixed to the outer wall of the mounting box 62 by bolts, achieving end sealing. The sealing covers 85 can cover the gap between the mating end face of the drive shaft 81 and the mounting box 62, forming an axial sealing protection. Together with the radial sealing structure of the four sealing rings 84, a multi-ring sealing structure with end face sealing is formed. Moreover, the sealing structure does not affect the normal rotation adjustment function of the drive shaft 81, always maintaining good sealing performance and ensuring the operational stability of the equipment.

[0036] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0037] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A positioning jig for spindle machining, characterized by, Includes a frame (1), a worktable (2) is installed at the top of the frame (1), a cutter shaft (3) is installed on one side of the frame (1), a housing (4) is installed on the outside of the frame (1), a control module (5) is installed on one side of the housing (4), a clamping chuck (9) is installed at the top of the worktable (2), and a pin seat (10) is installed at the top of the worktable (2). It also includes a circulation component (6), which is installed on the top of the worktable (2) and between the clamping chuck (9) and the ejector pin seat (10). The circulation component (6) is used for the circulation delivery of damping fluid. Support component (7) is installed inside the circulation component (6) and is used to support and carry the processing blank; Adjustment component (8) is installed on the side wall of the circulation component (6). The adjustment component (8) is used to adjust the working height of the support component (7) and to lock the support component (7).

2. The positioning jig for main shaft machining according to claim 1, characterized by, The circulation component (6) includes a base plate (61) which is mounted on the top of the workbench (2). Two mounting boxes (62) are symmetrically mounted on the top of the base plate (61), and each mounting box (62) can be slidably adjusted on the top of the base plate (61).

3. The positioning jig for main shaft machining according to claim 2, characterized by, A honeycomb panel (63) is fixedly installed on the inner side of each of the mounting boxes (62), and a cover plate (64) is installed on the top of the mounting box (62). One side of each of the two mounting boxes (62) is connected to the interface of a diversion valve (65) through a pipeline. The diversion valve (65) is fixedly installed on one side of the frame (1).

4. The positioning jig for main shaft machining according to claim 3, characterized by One side of the diversion valve (65) is connected to a circulation pump (66) via a pipeline, and one side of the circulation pump (66) is connected to a storage tank (67) via a pipeline. The other side of the two mounting boxes (62) is respectively equipped with a one-way valve (68), and the two one-way valves (68) are respectively connected to the storage tank (67) via pipelines.

5. The positioning jig for main shaft machining according to claim 4, characterized by The support assembly (7) includes a first mounting plate (71) and a second mounting plate (72). The first mounting plate (71) and the second mounting plate (72) rotate relative to each other inside the mounting box (62). Damping flow holes (73) are equidistantly distributed on the surfaces of the first mounting plate (71) and the second mounting plate (72).

6. The positioning jig for spindle machining according to claim 5, characterized by The ends of the first mounting plate (71) and the second mounting plate (72) are respectively equipped with follower wheels (74), and the outer sides of the first mounting plate (71) and the second mounting plate (72) are respectively fitted with sealing blocks (75).

7. The positioning jig for spindle machining according to claim 6, characterized by The two sealing blocks (75) slide on the surfaces of mounting plate one (71) and mounting plate two (72) respectively. The two sealing blocks (75) and the cover plate (64) are connected by a sealing sleeve (76). One end of mounting plate one (71) is fixedly connected to rack one (77), and one end of mounting plate two (72) is fixedly connected to rack two (78).

8. The positioning fixture for spindle machining according to claim 7, characterized in that, The adjustment assembly (8) includes a drive shaft (81) and a mounting bracket (82). The drive shaft (81) is nested inside the two mounting boxes (62) respectively. The mounting bracket (82) is installed on the outer side wall of the two mounting boxes (62) respectively. The drive shaft (81) rotates inside the corresponding mounting box (62). Gear 1 (810) and gear 2 (811) are fixedly sleeved on the outer side of the drive shaft (81) in sequence. Gear 1 (810) meshes with rack 1 (77).

9. The positioning fixture for spindle machining according to claim 8, characterized in that, The gear two (811) meshes with the rack two (78). Four sealing ring grooves (83) are symmetrically arranged on the outer side of the transmission shaft (81). A sealing ring (84) is nested inside the inner side of each sealing ring groove (83). Two sealing covers (85) are symmetrically installed at both ends of the transmission shaft (81). Each sealing cover (85) is fixed to the outer wall of the mounting box (62) by bolts. Limiting ring one (86) is installed at both ends of the transmission shaft (81).

10. The positioning fixture for spindle machining according to claim 9, characterized in that, The mounting bracket (82) is symmetrically equipped with pin brackets (87) on both sides. The two pin brackets (87) slide on the outside of the slide rod of the mounting bracket (82). The first limiting ring (86) is engaged with the pin bracket (87). The ends of the two pin brackets (87) are respectively equipped with the second limiting ring (88). The second limiting ring (88) rotates at the ends of the corresponding pin brackets (87).

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