A distance-adjustable worktable for a double-spindle machining center

Abstract

This application relates to an adjustable-pitch worktable for a dual-spindle machining center, belonging to the field of machining center technology. The adjustable-pitch worktable structure includes: a main worktable, a first quick-release assembly fixedly connected to the bottom of the main worktable, a rotary worktable fixedly fitted inside the first quick-release assembly, two sets of horizontal cradle turntables arranged above the rotary worktable, two sets of lead screws fixedly connected to the main worktable, one end of each set of horizontal cradle turntables being respectively located at the nut portion of the two sets of lead screws, and the other ends of each set of horizontal cradle turntables being slidably disposed on the inner wall of the main worktable. The main worktable contains a switching assembly and cleaning assemblies located on both sides of the bottom of the main worktable, with the cleaning assemblies communicating with the switching assembly. This application has the technical advantages of high workstation switching efficiency and automatic table surface cleaning.

Description

Technical Field

[0001] This application relates to the technical field of machining centers, and in particular to an adjustable-pitch worktable for a dual-spindle machining center. Background Technology

[0002] Currently, with the continuous growth in demand for batch processing of parts in industries such as automotive parts and general machinery, dual-spindle machining centers are widely used in milling and drilling processes of various precision parts due to their dual-station parallel processing characteristics. As the core carrier for workpiece clamping and motion output, the adjustability of the worktable structure and the degree of functional integration are key factors that determine the machining center's processing adaptability and production efficiency. Existing dual-spindle machining center worktables generally adopt a fixed-spacing station layout, which can only adapt to the processing of workpieces with fixed size specifications. A few worktables with spacing adjustment functions are only equipped with a single type of worktable surface. The worktable function switching process is complicated, and the cleaning of machining debris on the table surface requires independent machine stop operation.

[0003] Patent (CN114161206A) discloses a machining center with a flexible, serialized structural configuration. This patent is used for flexible automated production lines, featuring modular parallel machining units and a modular front bed unit. Depending on the characteristics of the workpieces being processed, horizontal or vertical rotary tables are flexibly used to clamp and rotate large workpieces. The number of horizontal or vertical rotary tables is determined based on the production line's cycle time requirements to flexibly match different production capacity needs (large, medium, and small). A modular main bed unit is also configured, with the number of parallel machining units determined based on the production line's cycle time requirements to flexibly match different production capacity needs (large, medium, and small). The modular front bed unit and modular main bed unit utilize automatic slides to increase the linear axis stroke for machining large workpieces. The configured modular front bed unit and modular main bed unit are functionally combined into a modular configuration according to the characteristics of the workpieces being processed and the production line's cycle time requirements, thus completing the overall configuration of the machining center.

[0004] Regarding the aforementioned technologies, the inventors believe that they suffer from drawbacks such as low workstation switching efficiency and the need for independent shutdown operations for table cleaning. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides an adjustable-pitch worktable for a dual-spindle machining center.

[0006] This application provides a pitch-adjustable worktable for a dual-spindle machining center, which adopts the following technical solution: An adjustable-spacing worktable for a dual-spindle machining center includes a main worktable. A first quick-release assembly is fixedly connected to the bottom of the main worktable. A rotary worktable is fixedly fitted inside the first quick-release assembly. Two sets of horizontal cradle turntables are arranged above the rotary worktable. Two sets of lead screws are fixedly connected to the main worktable. One end of each set of horizontal cradle turntables is respectively located at the nut portion of the two sets of lead screws. The other ends of each set of horizontal cradle turntables are slidably disposed on the inner wall of the main worktable. An exchange assembly and cleaning assemblies are arranged inside the main worktable and on both sides of the bottom of the main worktable. The cleaning assemblies are connected to the exchange assembly.

[0007] By adopting the above technical solution, two sets of lead screws synchronously drive two sets of horizontal cradle turntables to slide smoothly along the inner wall of the machine's worktable. The distance between the two sets of worktables can be continuously adjusted to adapt to the dual-spindle synchronous machining of workpieces of different lengths and widths, meeting diverse clamping and machining size requirements. The first quick-release component enables the rapid assembly, disassembly, and replacement of the rotary worktable, shortening the time spent on changing workstations. The switching component enables the switching between the rotary worktable and the horizontal cradle turntable, allowing the equipment to flexibly switch between planar rotary machining and multi-axis cradle machining, expanding the processing application scenarios and process adaptability range of the worktable. The cleaning component is directly connected to and linked with the switching component, which can simultaneously complete the cleaning of machining debris on the worktable surface during the workstation switching process, simplifying the overall operation process, reducing manual cleaning steps, improving the efficiency of continuous machining operation and the cleanliness of the worktable, and preventing residual debris from affecting the workpiece clamping accuracy.

[0008] Preferably, the first quick-release assembly includes a fixed worktable, the lower surface of which is fixedly connected to multiple sets of adjusting guide plates, and the interior of the whole machine worktable is provided with multiple sets of adjusting cavities. The multiple sets of adjusting guide plates correspond one-to-one with the multiple sets of adjusting cavities. The adjusting guide plates are slidably disposed inside the adjusting cavities. A sealing ring is fixedly connected to one end of the adjusting guide plate located inside the adjusting cavity. An adjusting chamber is formed between the sealing ring, the adjusting guide plate, and the adjusting cavity.

[0009] By adopting the above technical solution, multiple sets of adjusting guide plates and adjusting cavities are arranged in a one-to-one correspondence and form a sliding fit, which can provide stable guidance at multiple points for the lifting stroke of the fixed worktable, effectively avoiding the fixed worktable from tilting or jamming during the lifting process, and ensuring the smoothness and positional accuracy of the lifting operation; the sealing ring is fitted on the end of the adjusting guide plate and fits tightly against the inner wall of the adjusting cavity, together with the adjusting guide plate and adjusting cavity to form a sealed adjusting chamber, using air pressure change as the driving force for the lifting of the fixed worktable, the transmission process is smooth and without rigid impact, which can avoid the vibration of the lifting action on the worktable surface and the clamped workpiece.

[0010] Preferably, the switching component includes an air intake passage disposed inside the machine workbench and an air vent passage disposed opposite to the air intake passage. One end of both the air intake passage and the air vent passage is connected to the adjustment chamber. An air intake compressor is disposed at the other end of the air intake passage, and an air vent compressor is disposed at the other end of the air vent passage. An air intake baffle is disposed at the air intake passage, and an air vent baffle is disposed at the air vent passage.

[0011] By adopting the above technical solution, the air intake passage, in conjunction with the air intake compressor, can fill the regulating chamber with compressed air to increase the chamber pressure, providing a continuous and stable air pressure driving force for the upward movement of the fixed worktable; the air release passage, in conjunction with the air release compressor, can extract the gas from the regulating chamber to reduce the chamber pressure, providing negative pressure driving force for the downward reset of the fixed worktable; the two air passages are independently laid out and controlled separately, enabling independent operation of the inflation and deflation processes, avoiding crosstalk between air passages, and ensuring the accuracy of air pressure regulation and the controllability of the lifting and lowering movements; the air intake baffle and the air release baffle can mechanically cut off the opening and closing of the corresponding air passages respectively, controlling the opening and closing of the corresponding air passages at different stages of workstation switching, and closing the air release passage during the inflation and rising phase and closing the air intake passage during the deflation and falling phase.

[0012] Preferably, the machine's workbench has an air intake regulating chamber inside, an air intake regulating button is slidably disposed inside the air intake regulating chamber, one end of the air intake regulating button is fixedly connected to an air intake regulating wedge, the air intake regulating wedge slides laterally within the air intake regulating chamber, an air intake baffle is fixedly connected to the upper end of the air intake baffle, an air intake driven block is fixedly connected to one end of the air intake baffle, the wedge surface of the air intake regulating wedge abuts against the air intake driven block, the air intake driven block and the air intake baffle slide vertically within the air intake regulating chamber, an air intake regulating guide post is fixedly connected to the upper surface of the air intake baffle, and an air intake regulating spring is sleeved around the air intake regulating guide post.

[0013] By adopting the above technical solution, the air intake adjustment button can be directly touched by the outward rotation of the horizontal cradle turntable. Through the contact transmission between the air intake adjustment wedge and the wedge surface of the air intake driven block, the lateral displacement of the air intake adjustment button is converted into the vertical displacement of the air intake baffle, which in turn drives the air intake baffle to rise synchronously and open the air intake passage. This achieves a purely mechanical linkage triggering of the workstation switching action and the opening of the air passage, with fast response speed and high operational reliability, and is not affected by electrical control failures. After the triggering force disappears, the air intake adjustment spring can automatically reset the air intake baffle and the air intake baffle by relying on elastic rebound, and close the air intake passage in time, improving the automation level and reset accuracy of the device.

[0014] Preferably, the machine's workbench has an internal venting adjustment chamber, and a venting adjustment button is slidably disposed inside the venting adjustment chamber. One end of the venting adjustment button is fixedly connected to a venting adjustment wedge, which slides laterally within the venting adjustment chamber. A venting baffle is fixedly connected to the upper end of the venting baffle, and a venting driven block is fixedly connected to one end of the venting driven block. The wedge surface of the venting adjustment wedge abuts against the venting driven block. The venting driven block and the venting driven block slide vertically within the venting adjustment chamber. A venting adjustment guide post is fixedly connected to the lower surface of the venting driven block, and a venting adjustment spring is sleeved around the venting adjustment guide post.

[0015] By adopting the above technical solution, the air release adjustment button can be touched synchronously by the rotation of the horizontal cradle turntable. Through the wedge surface transmission of the air release adjustment wedge and the air release driven block, the lateral pressing force is converted into the vertical displacement of the air release baffle, which in turn drives the air release baffle to descend synchronously and close the air release passage. This works in conjunction with the opening action of the air intake passage to ensure the airtightness of the adjustment chamber during inflation and lifting, and avoid insufficient lift caused by air pressure leakage. The air release adjustment spring can automatically rebound by its elasticity after the trigger is released, driving the air release baffle to rise and reset and open the air release passage. This works in conjunction with the closing action of the air intake baffle to realize automatic air circuit switching during the lifting and resetting process.

[0016] Preferably, the cleaning component includes a cleaning passage disposed inside the machine workbench, the cleaning passage being connected to the venting passage, a debris box being disposed at the bottom of the machine workbench, the cleaning passage being connected to the debris box, and a filter plate being disposed in the middle section of the cleaning passage, the filter plate being located inside the debris box.

[0017] By adopting the above technical solution, the cleaning passage and the venting passage are directly connected. During the venting process, the negative pressure airflow generated by the venting air compressor can be used to suck up the processing debris on the surface of the workbench. This allows the cleaning action and the venting action during workstation switching to be started synchronously, simplifying the overall machine structure and reducing equipment costs and energy consumption. The filter plate is set in the middle of the cleaning passage and located inside the debris box. It can effectively intercept metal debris and processing debris carried in the airflow, causing the debris to fall into the debris box for centralized collection. At the same time, the filtered clean airflow enters the venting passage, preventing debris from entering the venting air compressor and causing component wear, thus extending the service life of the air circuit components. The debris box is installed in a pull-out type at the bottom of the workbench, making it easy for operators to regularly remove and clean the accumulated debris. Maintenance and operation are simple and quick, ensuring the continuous operation of the cleaning system. At the same time, it prevents residual debris on the table from scratching the bottom surface of the workpiece and the workbench surface, ensuring the accuracy of the clamping plane.

[0018] Preferably, the upper surface of the fixed workbench is provided with a first quick-release hole, and a first bearing is provided inside the first quick-release hole. The outer ring of the first bearing is fixedly connected to the inner wall of the first quick-release hole. Multiple sets of first square holes are provided on the inner wall of the inner ring of the first bearing. A first wedge is slidably provided inside the first square hole. A first guide post is fixedly connected to one end of the first wedge inside the first square hole. A first spring is sleeved around the first guide post. One end of the first spring is fixedly connected to the first wedge, and the other end of the first spring is fixedly connected to the inner wall of the first square hole. A first reset through hole is provided on the side wall of the first quick-release hole at the position corresponding to the first square hole. A first reset pull rod is slidably provided in the first reset through hole. One end of the first reset pull rod is fixedly connected to the first wedge, and the outer end protrudes from the outer wall of the fixed workbench.

[0019] By adopting the above technical solution, the first bearing is embedded inside the first quick-release hole, which can ensure the rotational accuracy and smoothness of the rotary table during operation, reduce rotational friction resistance, and meet the process requirements of high-precision rotary machining. Multiple sets of first wedges cooperate with the first spring, which can be automatically retracted when the first quick-release cylinder is inserted into the first quick-release hole. After alignment, they automatically pop out and lock into the corresponding slot by the elastic force of the first spring, completing the automatic locking and fixing of the rotary table. The operation is simple and quick. The first reset pull rod is inserted into the first reset through hole. The operator can directly pull the pull rod from the outside of the fixed worktable to drive the first wedge to retract and unlock, realizing the rapid disassembly of the rotary table, greatly improving the efficiency of assembly, disassembly and maintenance, shortening the time spent on worktable replacement and maintenance, and adapting to the processing scenario of frequent model changes.

[0020] Preferably, both ends of the two sets of horizontal cradle turntables are fixedly installed with second quick-release components. The second quick-release components include sleeves. Two sets of sleeves are fixedly connected to the nut portion of the lead screw, and the other two sets of sleeves are slidably connected to the machine worktable. A second bearing is provided inside the sleeve. The outer ring of the second bearing is fixedly connected to the inner wall of the sleeve. Multiple sets of second square holes are opened on the inner wall of the inner ring of the second bearing. A second wedge is slidably arranged inside the second square hole. A second guide post is fixedly connected to one end of the second wedge located inside the second square hole. A second spring is sleeved around the second guide post. One end of the second spring is fixedly connected to the second wedge, and the other end of the second spring is fixedly connected to the inner wall of the second square hole. A second reset through hole is opened on the side wall of the sleeve at the position corresponding to the second square hole. A second reset pull rod is slidably arranged in the second reset through hole. One end of the second reset pull rod is fixedly connected to the second wedge, and the outer end protrudes from the outer wall of the sleeve.

[0021] By adopting the above technical solution, both ends of the two sets of horizontal cradle turntables are connected by a second quick-release assembly. The sleeve at the lead screw end moves synchronously with the nut, and the sleeve at the sliding end slides along the inner wall of the machine's turntable, jointly ensuring the smoothness and parallelism of the horizontal cradle turntable during the spacing adjustment process. The second bearing is embedded inside the sleeve, ensuring the accuracy and smoothness of the horizontal cradle turntable's rotation, meeting the rotation requirements of multi-axis swing processing. Multiple sets of second wedges cooperate with the second spring to form an automatic locking structure, which can be fixed by insertion, making installation and removal convenient. The second reset pull rod can be quickly unlocked from the outside of the sleeve, realizing the quick disassembly and replacement of the horizontal cradle turntable. The quick-release structure at both ends is uniform, the spare parts are highly interchangeable, and maintenance and management are convenient. At the same time, it can be adapted to the replacement of horizontal cradle turntables of different specifications, improving the equipment's process adaptability.

[0022] Preferably, the horizontal cradle turntable includes a cradle base, one end of which is fixedly connected to a rotating turntable, and the rotating turntable is fixedly connected to a second quick-release cylinder. The second quick-release cylinder has a second quick-release groove around its perimeter, and the second quick-release cylinder is fixedly fitted inside the second quick-release assembly. The cradle worktable is rotatably mounted on the upper surface of the cradle base.

[0023] By adopting the above technical solutions, the rotary table can drive the cradle base and the cradle worktable to rotate around the axis as a whole. With the adjustment of the cradle worktable's own swing angle, the workpiece's position and posture can be adjusted with multiple degrees of freedom, meeting the processing requirements of complex curved surfaces, multi-angle holes and inclined surfaces, and expanding the equipment's five-axis processing capabilities. The second quick-release cylinder and the second quick-release assembly cooperate to realize quick assembly and disassembly positioning between the horizontal cradle rotary table and the whole machine worktable, which is convenient for the maintenance and repair of the worktable and the adaptation and switching of different specifications of workstations. The cradle base provides stable support and a swing installation foundation for the cradle worktable, ensuring the load-bearing capacity and operating rigidity during the swing process and improving the vibration resistance during the processing.

[0024] Preferably, a first quick-release cylinder is fixedly connected to the lower surface of the rotary worktable. Multiple sets of first quick-release grooves are formed around the first quick-release cylinder, and the multiple sets of first quick-release grooves correspond one-to-one with multiple sets of first square holes; multiple sets of second square holes correspond one-to-one with multiple sets of second quick-release grooves.

[0025] By adopting the above technical solution, the first quick-release slot and the first square hole are arranged in a one-to-one correspondence, and the second quick-release slot and the second square hole are arranged in a one-to-one correspondence. This ensures the accuracy of the wedge block alignment during locking, allowing each set of wedge blocks to be synchronously engaged in the corresponding slots, avoiding locking failure and uneven force caused by misalignment. The multiple sets of slots are evenly distributed along the circumference, which can evenly distribute the locking force around the cylinder, improving the connection rigidity and load-bearing capacity of the rotary table and the horizontal cradle turntable after installation. At the same time, it ensures the balance of force during rotation and improves the stability of operation. The one-to-one corresponding slot structure can also play a role in circumferential anti-rotation positioning, ensuring the positioning accuracy of repeated installation and ensuring the consistency of processing accuracy.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Two sets of lead screws synchronously drive two sets of horizontal cradle turntables to slide smoothly along the inner wall of the machine's worktable. The distance between the two sets of worktables can be continuously adjusted to adapt to dual-spindle synchronous machining operations of workpieces of different lengths and widths, meeting diverse clamping and machining size requirements. The first quick-release component enables rapid assembly, disassembly, and replacement of the rotary worktable, shortening the time spent on changing workstations. The switching component enables the switching between the rotary worktable and the horizontal cradle turntable, allowing the equipment to flexibly switch between planar rotary machining and multi-axis cradle machining, expanding the processing application scenarios and process adaptability range of the worktable. The cleaning component is directly connected to and linked with the switching component, which can simultaneously complete the cleaning of machining debris on the worktable surface during workstation switching, simplifying the overall operation process, reducing manual cleaning steps, improving continuous machining efficiency and table surface cleanliness, and preventing residual debris from affecting workpiece clamping accuracy.

[0027] 2. The intake passage, in conjunction with the intake air compressor, can fill the regulating chamber with compressed air to increase the chamber pressure, providing a continuous and stable air pressure driving force for the upward movement of the fixed worktable; the venting passage, in conjunction with the venting air compressor, can extract the gas from the regulating chamber to reduce the chamber pressure, providing negative pressure driving force for the downward reset of the fixed worktable; the two air passages are independently laid out and controlled separately, enabling independent operation of the inflation and deflation processes, avoiding crosstalk between air passages, and ensuring the accuracy of air pressure regulation and the controllability of the lifting and lowering movements; the intake baffle and venting baffle can mechanically cut off the opening and closing of the corresponding air passages respectively, controlling the opening and closing of the corresponding air passages at different stages of workstation switching, and closing the venting passage during the inflation and rising phase and closing the intake passage during the deflation and falling phase. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the embodiment.

[0029] Figure 2 This is a schematic diagram of the overall structure of the workbench in the embodiment.

[0030] Figure 3 This is a schematic diagram of the overall structure of the fixed workbench in the embodiment.

[0031] Figure 4 This is a schematic diagram of the internal structure of the fixed workbench in an embodiment.

[0032] Figure 5 This is a schematic diagram of the internal pathways of the switching component in an embodiment.

[0033] Figure 6 This is a schematic diagram of the overall structure of the air intake baffle in an embodiment.

[0034] Figure 7 This is a schematic diagram of the internal structure of the intake regulating chamber in an embodiment.

[0035] Figure 8 This is a schematic diagram of the overall structure of the venting baffle in an embodiment.

[0036] Figure 9 This is a schematic diagram of the internal structure of the venting regulating chamber in an embodiment.

[0037] Figure 10 This is a schematic diagram of the overall structure of the horizontal cradle turntable workbench in an embodiment.

[0038] Figure 11 This is a schematic diagram of the internal structure of the second quick-release component in the embodiment.

[0039] Explanation of reference numerals in the attached drawings: 1. Complete machine worktable; 11. Air intake regulating chamber; 12. Air release regulating chamber; 2. First quick-release assembly; 21. Fixed worktable; 211. First quick-release hole; 212. First bearing; 213. First square hole; 214. First wedge; 215. First guide post; 216. First spring; 22. First disassembly cylinder; 221. First disassembly groove; 23. Adjusting guide plate; 24. Adjusting cavity; 25. Sealing ring; 26. Adjusting chamber; 3. Rotary worktable; 4. Horizontal cradle turntable worktable; 41. Cradle base; 42. Rotary turntable; 45. Second quick-release cylinder; 46. Second quick-release groove; 47. Cradle worktable; 5. Lead screw; 6. Second quick-release assembly; 61. Sleeve; 62. Second bearing; 63. Second square hole; 64. Second wedge; 6 5. Second guide post; 66. Second spring; 7. Replacement assembly; 71. Intake passage; 72. Vent passage; 73. Intake air compressor; 74. Vent air compressor; 75. Intake baffle; 751. Intake deflector; 752. Intake adjustment button; 753. Intake adjustment wedge; 754. Intake driven block; 755. Intake adjustment guide post; 756. Intake adjustment spring; 76. Vent baffle; 761. Vent deflector; 762. Vent adjustment button; 763. Vent adjustment wedge; 764. Vent driven block; 765. Vent adjustment guide post; 766. Vent adjustment spring; 8. Cleaning assembly; 81. Cleaning passage; 82. Debris box; 83. Filter plate; 9. First reset through hole; 91. First reset pull rod; 92. Second reset through hole; 93. Second reset pull rod. Detailed Implementation

[0040] The following is in conjunction with the appendix Figures 1 to 11 This application will be described in further detail.

[0041] This application discloses an adjustable-pitch worktable for a dual-spindle machining center. (Refer to...) Figures 1 to 5The system includes a main worktable 1, with a first quick-release assembly 2 fixedly connected to the bottom of the main worktable 1. A rotating worktable 3 is fixedly fitted inside the first quick-release assembly 2. Two sets of horizontal cradle turntables 4 are positioned above the rotating worktable 3. Two sets of lead screws 5 are fixedly connected to the main worktable 1. One end of each set of horizontal cradle turntables 4 is located at the nut of the lead screw 5, and the other end of each set of horizontal cradle turntables 4 is slidably mounted on the inner wall of the main worktable 1. An adjustment assembly 7 and cleaning assemblies 8 are located on both sides of the bottom of the main worktable 1, with the cleaning assemblies 8 communicating with the adjustment assembly 7. When the distance between the two sets of horizontal cradle turntables 4 needs to be adjusted, the two sets of... When the lead screw 5 rotates, the nuts of the two sets of lead screws 5 drive the two sets of horizontal cradle turntables 4 to slide along the inner wall of the machine worktable 1. After adjusting to the target distance, the two sets of lead screws 5 stop rotating, and the two processing arms above are controlled to descend to process the workpiece. When it is necessary to switch to the use of the rotary worktable 3, the two sets of lead screws 5 are driven to rotate, which drives the two sets of horizontal cradle turntables 4 to move to the preset positions on both sides. Then, the two sets of horizontal cradle turntables 4 are rotated outward, triggering the switching component 7 to start running. The switching component 7 drives the first quick-release component 2 to drive the rotary worktable 3 to complete the lifting action. During the worktable switching process, the cleaning component 8 starts running synchronously with the switching component 7 to complete the cleaning of debris on the worktable surface.

[0042] Reference Figures 1 to 4 The first quick-release assembly 2 includes a fixed worktable 21. Multiple sets of adjusting guide plates 23 are fixedly connected to the lower surface of the fixed worktable 21. Multiple sets of adjusting cavities 24 are provided inside the worktable 1. Each set of adjusting guide plates 23 corresponds to one set of adjusting cavities 24. The adjusting guide plates 23 are slidably disposed inside the adjusting cavities 24. A sealing ring 25 is fixedly connected to one end of the adjusting guide plate 23 inside the adjusting cavity 24. An adjusting chamber 26 is formed between the sealing ring 25, the adjusting guide plate 23, and the adjusting cavity 24. The replacement assembly 7 injects air into the adjusting chamber 26. When the gas is in the regulating chamber 26, it pushes the sealing ring 25 upward along the inner wall of the regulating cavity 24. The sealing ring 25 drives the regulating guide plate 23 to slide upward synchronously along the regulating cavity 24. The regulating guide plate 23 drives the fixed worktable 21 to rise synchronously. When the changing component 7 extracts gas from the regulating chamber 26, a negative pressure is formed in the regulating chamber 26, which drives the sealing ring 25 downward along the inner wall of the regulating cavity 24. The sealing ring 25 drives the regulating guide plate 23 to slide downward synchronously along the regulating cavity 24. The regulating guide plate 23 drives the fixed worktable 21 to fall synchronously.

[0043] Reference Figures 3 to 9The replacement component 7 includes an air intake passage 71 and an air venting passage 72 disposed inside the machine workbench 1. One end of both the air intake passage 71 and the air venting passage 72 is connected to the regulating chamber 26. An air intake compressor 73 is disposed at the other end of the air intake passage 71, and an air venting compressor 74 is disposed at the other end of the air venting passage 72. An air intake baffle 75 is disposed at the air intake passage 71, and an air venting baffle 76 is disposed at the air venting passage 72. The interior of the machine workbench 1 is equipped with... An intake regulating chamber 11 is provided, and an intake regulating button 752 is slidably disposed inside the intake regulating chamber 11. One end of the intake regulating button 752 is fixedly connected to an intake regulating wedge 753, which slides laterally within the intake regulating chamber 11. An intake baffle 75 is fixedly connected to the upper end of the intake baffle 75, and one end of the intake baffle 751 is fixedly connected to an intake driven block 754. The wedge surface of the intake regulating wedge 753 abuts against the intake driven block 754. 54 and the intake deflector 751 slide vertically within the intake adjustment chamber 11. An intake adjustment guide post 755 is fixedly connected to the upper surface of the intake deflector 751, and an intake adjustment spring 756 is sleeved around the intake adjustment guide post 755. The machine workbench 1 is provided with a venting adjustment chamber 12. A venting adjustment button 762 is slidably arranged inside the venting adjustment chamber 12. A venting adjustment wedge 763 is fixedly connected to one end of the venting adjustment button 762. The venting adjustment wedge 763 adjusts the venting adjustment... The venting baffle 76 slides laterally within the cavity 12. A venting lever 761 is fixedly connected to the upper end of the venting baffle 76. A venting driven block 764 is fixedly connected to one end of the venting lever 761. The wedge surface of the venting adjusting wedge 763 abuts against the venting driven block 764. The venting driven block 764 and the venting lever 761 slide vertically within the venting adjusting cavity 12. A venting adjusting guide post 765 is fixedly connected to the lower surface of the venting lever 761. A venting adjusting spring 766 is sleeved around the venting adjusting guide post 765.

[0044] When the two sets of horizontal cradle turntables 4 rotate outwards and touch the air intake adjustment button 752, the air intake adjustment button 752 is forced to slide into the air intake adjustment cavity 11, causing the air intake adjustment wedge 753 to move horizontally synchronously within the air intake adjustment cavity 11. The wedge surface of the air intake adjustment wedge 753 pushes the air intake driven block 754 to slide vertically upwards. The air intake driven block 754 causes the air intake deflector 751 to move upwards synchronously. The air intake deflector 751 causes the air intake baffle 75 to rise synchronously, opening the air intake passage 71. At the same time, the air intake deflector 751 drives... The intake regulating guide post 755 moves upward, compressing the intake regulating spring 756; simultaneously, the two sets of horizontal cradle turntables 4 rotate outward and touch the vent regulating button 762. The vent regulating button 762 is forced to slide into the vent regulating cavity 12, causing the vent regulating wedge block 763 to move laterally synchronously within the vent regulating cavity 12. The vent regulating wedge block 763 causes the vent driven block 764 to slide downward, which in turn causes the vent deflector 761 to slide downward. The vent deflector 761 causes the vent baffle 76 to descend synchronously, thus regulating the venting. When the spring 766 is compressed, the vent passage 72 is closed. Then, the intake air compressor 73 starts, and outside gas flows into the regulating chamber 26 through the intake passage 71. When the air pressure in the regulating chamber 26 reaches the specified level, the intake air compressor 73 stops working. When the two sets of horizontal cradle turntables 4 return to their original positions and the intake adjustment button 752 and the vent adjustment button 762 are released, the intake adjustment spring 756 rebounds, causing the intake deflector 751 to move downwards. The intake deflector 751 then causes the intake baffle 75 to descend synchronously, closing the intake passage 71. The intake deflector 751 drives the intake driven block 754 to slide upward, pushing the intake adjusting wedge 753 to move laterally in the opposite direction, causing the intake adjusting button 752 to pop out and reset; at the same time, the vent adjusting spring 766 rebounds and drives the vent deflector 761 to move upward, and the vent deflector 761 drives the vent baffle 76 to rise synchronously, opening the vent passage 72. Then the vent air compressor 74 starts, extracting the gas inside the adjusting chamber 26 through the vent passage 72. When the air pressure in the adjusting chamber 26 drops to the preset value, the vent air compressor 74 stops working.

[0045] Reference Figures 1 to 5The cleaning component 8 includes a cleaning passage 81 located inside the workbench 1, which is connected to the venting passage 72. A debris box 82 is located at the bottom of the workbench 1, and the cleaning passage 81 is connected to the debris box 82. A filter plate 83 is located in the middle section of the cleaning passage 81, inside the debris box 82. When the venting air compressor 74 starts to pump air, the debris on the surface of the workbench is sucked into the cleaning passage 81 with the airflow. When the airflow carries the debris through the filter plate 83, the debris is intercepted by the filter plate 83 and falls into the debris box 82. The filtered airflow is discharged through the venting passage 72. When it is necessary to clean the accumulated debris, the operator pulls the debris box 82 out from the bottom of the workbench 1, pours out the debris accumulated inside the debris box 82, and then puts the debris box 82 back into the bottom of the workbench 1.

[0046] Reference Figures 1 to 4The upper surface of the fixed workbench 21 is provided with a first quick-release hole 211. A first bearing 212 is provided inside the first quick-release hole 211. The outer ring of the first bearing 212 is fixedly connected to the inner wall of the first quick-release hole 211. Multiple sets of first square holes 213 are provided on the inner wall of the inner ring of the first bearing 212. A first wedge 214 is slidably disposed inside the first square hole 213. A first guide post 215 is fixedly connected to one end of the first wedge 214 located inside the first square hole 213. A first spring 216 is sleeved around the first guide post 215. One end of the first spring 216 is fixedly connected to the first wedge 214, and the other end of the first spring 216 is fixedly connected to the first wedge 214. The first quick-release cylinder is fixedly connected to the inner wall of the first square hole 213; a first reset through hole 9 is opened on the side wall of the first quick-release hole 211 at the position corresponding to the first square hole 213, and a first reset pull rod 91 is slidably arranged in the first reset through hole 9. One end of the first reset pull rod 91 is fixedly connected to the first wedge block 214, and the outer end protrudes from the outer wall of the fixed worktable 21; a first quick-release cylinder is fixedly connected to the lower surface of the rotary worktable 3, and multiple sets of first quick-release grooves are opened around the first quick-release cylinder, with each set of first quick-release grooves corresponding to a set of first square holes 213; when installing the rotary worktable 3, the first quick-release cylinder is aligned with the center of the first quick-release hole 211 and inserted downwards. The lower outer wall of the column presses against the exposed inclined surface of the first wedge 214, causing the first wedge 214 to slide towards the bottom of the first square hole 213. The first wedge 214 drives the first guide post 215 to move synchronously, compressing the first spring 216 sleeved around the first guide post 215. When the first quick-release cylinder is fully inserted into the first quick-release hole 211 and multiple sets of first quick-release slots are aligned with multiple sets of first square holes 213, the first spring 216 rebounds and extends, pushing the first wedge 214 to slide towards the opening of the first square hole 213. The exposed end of the first wedge 214 is engaged in the corresponding position of the first quick-release slot. The rotary worktable 3 is in operation. In the current state, the inner ring of the first bearing 212 rotates relative to the outer ring, causing the first quick-release cylinder and the rotary table 3 to rotate as a whole around the axis of the first quick-release hole 211. When disassembling the rotary table 3, the first reset lever 91 is pulled along the first reset through hole 9 towards the bottom of the hole. The first reset lever 91 drives the first wedge 214 to slide along the first square hole 213 towards the bottom of the hole and compress the first spring 216. The exposed end of the first wedge 214 exits from the inside of the first quick-release groove, releasing the locking limit on the first quick-release cylinder. Then, the rotary table 3 is pulled upward to pull the first quick-release cylinder out of the inside of the first quick-release hole 211, completing the disassembly of the rotary table 3.

[0047] Reference Figures 9 to 11The horizontal cradle turntable 4 includes a cradle base 41, with a rotating turntable 42 fixedly connected to one end of the cradle base 41. A second quick-release cylinder 45 is fixedly connected to the rotating turntable 42. A second quick-release groove 46 is formed around the second quick-release cylinder 45, which is fixedly fitted inside the second quick-release assembly 6. A cradle worktable 47 is rotatably mounted on the upper surface of the cradle base 41. Two sets of horizontal cradle turntables 4 are each fixedly mounted with a second quick-release assembly 6 at both ends. The second quick-release assembly 6 includes a sleeve 61. Two sets of sleeves 61 are fixedly connected to the nut portion of the lead screw 5, and the other two sets of sleeves 61 are slidably connected to the machine worktable 1. A second bearing 62 is provided inside the sleeve 61, and the outer ring of the second bearing 62 is fixedly connected to the inner wall of the sleeve 61. Multiple sets of second square holes 63 are formed on the inner wall of the inner ring of the second bearing 62. A second wedge 64 is slidably disposed inside the second square hole 63. A second guide post 65 is fixedly connected to one end of the second wedge 64 inside the second square hole 63. A second spring 66 is sleeved around the second guide post 65. One end of the second spring 66 is fixedly connected to the second wedge 64, and the other end of the second spring 66 is fixedly connected to the inner wall of the second square hole 63. A second reset through hole 92 is formed on the side wall of the sleeve 61 at the position corresponding to the second square hole 63. A second reset pull rod 93 is slidably disposed inside the second reset through hole 92. One end of the second reset pull rod 93 is fixedly connected to the second wedge 64, and the outer end protrudes from the outer wall of the sleeve 61. The multiple sets of second square holes 63 correspond one-to-one with the multiple sets of second quick-release grooves 46.

[0048] When installing the horizontal cradle turntable 4, the second quick-release cylinder 45 is inserted into the center of the sleeve 61. The outer wall of the end of the second quick-release cylinder 45 presses against the exposed end face of the second wedge 64, causing the second wedge 64 to slide towards the bottom of the second square hole 63. The second wedge 64 drives the second guide post 65 to move synchronously, compressing the second spring 66 sleeved around the second guide post 65. When the second quick-release cylinder 45 is fully inserted into the sleeve 61 and the multiple sets of second quick-release grooves 46 are aligned with the multiple sets of second square holes 63, the second spring 66 rebounds and extends, pushing the second wedge 64 to slide towards the opening of the second square hole 63. The exposed end of the second wedge 64 is engaged in the corresponding second quick-release groove 46. When adjusting the distance between the two sets of horizontal cradle turntables 4, the lead screw 5 rotates, and the nut of the lead screw 5 drives the sleeve 61 at the corresponding position to move synchronously. The horizontal cradle turntable 4 slides along the inner wall of the machine worktable 1. When the horizontal cradle turntable 4 is in working condition, the rotating turntable 42 drives the cradle base 41, the cradle worktable 47 and the second quick-release cylinder 45 to rotate around the axis of the sleeve 61. At the same time, the cradle worktable 47 swings at an angle on the upper surface of the cradle base 41. When disassembling the horizontal cradle turntable 4, the second reset lever 93 is pulled towards the bottom of the second reset through hole 92. The second reset lever 93 drives the second wedge 64 to slide towards the bottom of the second square hole 63 and compress the second spring 66. The exposed end of the second wedge 64 exits from the inside of the second quick-release groove 46, releasing the locking limit on the second quick-release cylinder 45. Then, the horizontal cradle turntable 4 is pulled outward to pull the second quick-release cylinder 45 out of the sleeve 61, completing the disassembly of the horizontal cradle turntable 4.

[0049] The working principle of the adjustable-gap worktable for a dual-spindle machining center in this application is as follows: When adjusting the distance between the two sets of horizontal cradle rotary table worktables 4, the two sets of lead screws 5 are driven to rotate. The nuts of the lead screws 5 drive the two sets of horizontal cradle rotary table worktables 4 to slide along the inner wall of the machine worktable 1. After reaching the target distance, the lead screws 5 stop rotating, and the two machining arms above are controlled to descend to process the workpiece. When switching the working condition of the rotary table 3, the lead screws 5 are first driven to move the two sets of horizontal cradle rotary table worktables 4 to the sides to the preset positions, and then they are rotated outwards to touch the adjustment. When the intake adjustment button 752 and the vent adjustment button 762 of component 7 are switched, the operation of component 7 is triggered. The intake adjustment button 752 is pressed and slides into the intake adjustment cavity 11, causing the intake adjustment wedge block 753 to move laterally. The wedge surface drives the intake driven block 754, the intake deflector 751, and the intake baffle 75 to rise, opening the intake passage 71. At the same time, the vent adjustment button 762 is pressed and slides into the vent adjustment cavity 12, causing the vent adjustment wedge block 763 to move laterally, pushing the vent driven block 764 and the vent deflector 761. As the vent baffle 76 moves downward, the vent passage 72 is cut off; the air compressor 73 then starts, and gas enters the regulating chamber 26 through the air intake passage 71, pushing the sealing ring 25 and the regulating guide plate 23 upward along the regulating cavity 24. With the help of the fixed worktable 21 of the first quick-release assembly 2, the rotating worktable 3 is raised synchronously to achieve worktable switching. Then, the two processing arms above are controlled to descend to process the workpiece; when the horizontal cradle turntable worktable 4 rotates back to its original position and the adjustment button is released, the air intake regulating spring 756 rebounds to close the air intake passage 71. When the venting adjustment spring 766 rebounds, it opens the venting passage 72. The venting air compressor 74 draws gas from the regulating chamber 26, causing the rotating worktable 3 to fall back to its original position. The cleaning component 8 operates synchronously, sucking debris from the worktable surface into the cleaning passage 81 with the airflow. The debris is intercepted by the filter plate and collected in the debris box 82. The filtered airflow is discharged through the venting passage 72. The disassembly and assembly of the rotating worktable 3 and the horizontal cradle turntable 4 are completed quickly by relying on the wedge locking structure of the first quick-release component 2 and the second quick-release component 6 in conjunction with the reset pull rod.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable-pitch worktable for a dual-spindle machining center, characterized in that: The system includes a complete machine workbench (1), with a first quick-release assembly (2) fixedly connected to the bottom of the complete machine workbench (1). A rotating workbench (3) is fixedly fitted inside the first quick-release assembly (2). Two sets of horizontal cradle turntables (4) are arranged above the rotating workbench (3). Two sets of lead screws (5) are fixedly connected to the complete machine workbench (1). One end of each set of horizontal cradle turntables (4) is respectively located at the nut of the two sets of lead screws (5). The other end of each set of horizontal cradle turntables (4) is slidably arranged on the inner wall of the complete machine workbench (1). An exchange assembly (7) and a cleaning assembly (8) are arranged on both sides of the bottom of the complete machine workbench (1). The cleaning assembly (8) is connected to the exchange assembly (7).

2. The adjustable-pitch worktable for a dual-spindle machining center according to claim 1, characterized in that: The first quick-release assembly (2) includes a fixed worktable (21). Multiple sets of adjustment guide plates (23) are fixedly connected to the lower surface of the fixed worktable (21). Multiple sets of adjustment cavities (24) are provided inside the whole machine worktable (1). The multiple sets of adjustment guide plates (23) correspond one-to-one with the multiple sets of adjustment cavities (24). The adjustment guide plates (23) are slidably disposed inside the adjustment cavities (24). A sealing ring (25) is fixedly connected to one end of the adjustment guide plate (23) located inside the adjustment cavity (24). An adjustment chamber (26) is formed between the sealing ring (25), the adjustment guide plate (23), and the adjustment cavity (24).

3. The adjustable-pitch worktable for a dual-spindle machining center according to claim 2, characterized in that: The switching component (7) includes an air intake passage (71) disposed inside the workbench (1) of the whole machine and an air release passage (72) disposed opposite to the air intake passage (71). One end of the air intake passage (71) and the air release passage (72) are connected to the regulating chamber (26). An air intake compressor (73) is disposed at the other end of the air intake passage (71), and an air release compressor (74) is disposed at the other end of the air release passage (72). An air intake baffle (75) is disposed at the air intake passage (71), and an air release baffle (76) is disposed at the air release passage (72).

4. The adjustable-pitch worktable for a dual-spindle machining center according to claim 3, characterized in that: The machine workbench (1) is provided with an air intake regulating chamber (11). An air intake regulating button (752) is slidably disposed inside the air intake regulating chamber (11). An air intake regulating wedge (753) is fixedly connected to one end of the air intake regulating button (752). The air intake regulating wedge (753) slides laterally within the air intake regulating chamber (11). An air intake baffle (751) is fixedly connected to the upper end of the air intake baffle (75). One end of the intake driven block (754) is fixedly connected to the intake adjustment wedge (753). The wedge surface of the intake adjustment wedge (753) abuts against the intake driven block (754). The intake driven block (754) and the intake deflector (751) slide vertically in the intake adjustment cavity (11). An intake adjustment guide post (755) is fixedly connected to the upper surface of the intake deflector (751). An intake adjustment spring (756) is sleeved around the intake adjustment guide post (755).

5. The adjustable-pitch worktable for a dual-spindle machining center according to claim 3, characterized in that: The machine workbench (1) is provided with a venting adjustment chamber (12) inside. A venting adjustment button (762) is slidably arranged inside the venting adjustment chamber (12). A venting adjustment wedge (763) is fixedly connected to one end of the venting adjustment button (762). The venting adjustment wedge (763) slides laterally in the venting adjustment chamber (12). A venting baffle (76) is fixedly connected to the upper end of the venting baffle (76). One end of the 761) is fixedly connected to a venting driven block (764), the wedge surface of the venting adjusting wedge (763) abuts against the venting driven block (764), the venting driven block (764) and the venting lever (761) slide vertically in the venting adjusting cavity (12), the lower surface of the venting lever (761) is fixedly connected to a venting adjusting guide post (765), and a venting adjusting spring (766) is sleeved around the venting adjusting guide post (765).

6. The adjustable-pitch worktable for a dual-spindle machining center according to claim 3, characterized in that: The cleaning component (8) includes a cleaning passage (81) disposed inside the workbench (1) of the machine, the cleaning passage (81) being connected to the venting passage (72), a debris box (82) being disposed at the bottom of the workbench (1), the cleaning passage (81) being connected to the debris box (82), a filter plate (83) being disposed in the middle section of the cleaning passage (81), and the filter plate (83) being located inside the debris box (82).

7. The adjustable-pitch worktable for a dual-spindle machining center according to claim 3, characterized in that: The upper surface of the fixed workbench (21) is provided with a first quick-release hole (211). A first bearing (212) is provided inside the first quick-release hole (211). The outer ring of the first bearing (212) is fixedly connected to the inner wall of the first quick-release hole (211). The inner wall of the inner ring of the first bearing (212) is provided with multiple sets of first square holes (213). A first wedge (214) is slidably arranged inside the first square hole (213). One end of the first wedge (214) located inside the first square hole (213) is fixedly connected to a first guide post (215). A first spring (216) is sleeved around the first wedge (214), one end of the first spring (216) is fixedly connected to the first wedge (214), and the other end of the first spring (216) is fixedly connected to the inner wall of the first square hole (213); a first reset through hole (9) is opened on the side wall of the first quick release hole (211) at the position corresponding to the first square hole (213), and a first reset pull rod (91) is slidably arranged in the first reset through hole (9), one end of the first reset pull rod (91) is fixedly connected to the first wedge (214), and the outer end protrudes from the outer wall of the fixed worktable (21).

8. The adjustable-pitch worktable for a dual-spindle machining center according to claim 7, characterized in that: Both ends of the two sets of horizontal cradle turntables (4) are fixedly equipped with second quick-release components (6). The second quick-release components (6) include sleeves (61). Two sets of sleeves (61) are fixedly connected to the nut part of the lead screw (5), and the other two sets of sleeves (61) are slidably connected to the machine worktable (1). A second bearing (62) is provided inside the sleeve (61). The outer ring of the second bearing (62) is fixedly connected to the inner wall of the sleeve (61). Multiple sets of second square holes (63) are opened on the inner wall of the inner ring of the second bearing (62). A second wedge (64) is slidably arranged inside the second square hole (63). A second guide post (65) is fixedly connected to one end of the second square hole (63). A second spring (66) is sleeved around the second guide post (65). One end of the second spring (66) is fixedly connected to the second wedge (64), and the other end of the second spring (66) is fixedly connected to the inner wall of the second square hole (63). A second reset through hole (92) is opened on the side wall of the sleeve (61) at the position corresponding to the second square hole (63). A second reset pull rod (93) is slidably arranged in the second reset through hole (92). One end of the second reset pull rod (93) is fixedly connected to the second wedge (64), and the outer end protrudes from the outer wall of the sleeve (61).

9. The adjustable-pitch worktable for a dual-spindle machining center according to claim 8, characterized in that: The horizontal cradle turntable (4) includes a cradle base (41), one end of which is fixedly connected to a rotating turntable (42), and the rotating turntable (42) is fixedly connected to a second quick-release cylinder (45). The second quick-release cylinder (45) has a second quick-release groove (46) around its perimeter, and the second quick-release cylinder (45) is fixedly fitted inside the second quick-release assembly (6). The cradle worktable (47) is rotatably mounted on the upper surface of the cradle base (41).

10. The adjustable-pitch worktable for a dual-spindle machining center according to claim 9, characterized in that: The lower surface of the rotary worktable (3) is fixedly connected to a first quick-release cylinder. Multiple sets of first quick-release grooves are opened around the first quick-release cylinder. The multiple sets of first quick-release grooves correspond one-to-one with the multiple sets of first square holes (213); the multiple sets of second square holes (63) correspond one-to-one with the multiple sets of second quick-release grooves (46).

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