Multi-power-head quick adjusting device of circumferential array grinding machine and using method of multi-power-head quick adjusting device

Abstract

The invention provides a multi-power-head rapid adjusting device of a circumferential array grinding machine and a using method of the multi-power-head rapid adjusting device, and belongs to the technical field of mechanical grinding machining. The device comprises a base assembly, a spiral lifting assembly is arranged on the base assembly, and a linear sliding table assembly is arranged on the outer side of the spiral lifting assembly; a rear positioning seat assembly is arranged on the linear sliding table assembly, a front positioning seat assembly is arranged on the spiral lifting assembly, and a group of corresponding front positioning seat assembly and rear positioning seat assembly is connected with a double-hooke-joint main shaft assembly; the base assembly is connected with a workpiece rotary table ram assembly through a portal frame, and the workpiece rotary table ram assembly is connected with a calibration adjusting tool. According to the using method, the angle coordinates of all the power heads are determined through circumferential array angle grouping calculation, and then accurate adjustment and positioning are conducted by means of all the assemblies. Through circumferential rotation, accurate calibration and rapid butt joint of the linear sliding table, rapid and accurate adjustment of the circumferential array grinding power head is achieved, the device adapts to machining of different blade discs, and efficiency and accuracy are improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical grinding technology, and in particular to a rapid adjustment device for multiple power heads of a circular array grinding machine and its usage method. Background Technology

[0002] As a core structural component of aero-engines, integral bladed disks (IBDs) integrate rotor blades with the disk, eliminating the need for tenons, mortises, and locking devices in traditional connections. This significantly reduces structural weight and the number of parts, lowers airflow losses, and improves aerodynamic efficiency, leading to their widespread application in both military and civilian aero-engines. However, their manufacturing process is extremely complex. Currently, the precision machining of IBDs mainly relies on high-end imported bladed disk milling machines. Milling methods suffer from low efficiency, susceptibility to bladed disk deformation, and high equipment costs, severely hindering aero-engine production efficiency and manufacturing cost control.

[0003] To overcome the aforementioned bottlenecks, multi-head grinding machines are currently commonly used, which effectively improve the finishing efficiency of integral impellers by grinding multiple blades simultaneously. However, in actual production, due to significant differences in the number of blades and the included angle between blades among different models of integral impellers, the position of each grinding head needs to be readjusted when changing the impeller model.

[0004] In the prior art, Chinese patent application publication number CN105881108A discloses a multi-station, multi-directional CNC machining equipment. Although this equipment achieves multi-station machining through a turntable and multiple fixed power heads, the spindle center lines of the power heads are fixed and intersect at a single point. It can only adapt to the machining of parts with specific structures and cannot flexibly adjust the position of the power heads according to the workpiece parameters. In addition, Chinese patent application publication number CN111300173A discloses a relay grinding process and a CNC grinding machine. This grinding machine achieves process relay by having a bottom turntable drive the power head to cooperate with a fixed grinding wheel frame. The number and position of its power heads are relatively fixed, and it is only suitable for batch processing of standardized workpieces such as circular blades. It lacks the ability to quickly adjust the power head for different blade parameters.

[0005] It is evident that the existing adjustment method is not only cumbersome to operate, requiring mechanical alignment, tightening and calibration of each power head one by one, but also difficult to guarantee the adjustment accuracy. Multiple adjustments can easily lead to cumulative errors, which seriously affect the processing quality. At the same time, the adjustment process is time-consuming, which greatly reduces the effective processing time of the equipment and restricts the mass production efficiency of the overall impeller. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies, such as cumbersome operation, low adjustment accuracy, and low work efficiency, and to provide a rapid adjustment device for a multi-power head of a circular array grinding machine and its usage method.

[0007] This invention is achieved through the following technical solution: A rapid adjustment device for a multi-power head of a circular array grinding machine includes a base assembly. A spiral lifting assembly is mounted on the base assembly. Multiple linear slide assemblies, evenly arranged circumferentially, are mounted on the outer side of the spiral lifting assembly and are slidably connected to the base assembly, allowing the linear slide assemblies to rotate circumferentially on the base assembly. Each linear slide assembly has a rear positioning seat assembly. The spiral lifting assembly has multiple front positioning seat assemblies, each corresponding to a rear positioning seat assembly. A corresponding set of front and rear positioning seat assemblies are connected to a double Hooke hinge spindle assembly. The front part of the double Hooke hinge spindle assembly is connected to the front positioning seat assembly, and the rear part is connected to the rear positioning seat assembly. A gantry frame is mounted on the base assembly, located outside the linear slide assemblies. The crossbeam of the gantry frame is connected to a workpiece turntable slide assembly via a linear guide pair. A calibration and adjustment fixture is connected to the end of the workpiece turntable slide assembly.

[0008] This device achieves rapid positioning of the circumferential array grinding power head through the circumferential rotation adjustment of the linear slide assembly and the precise calibration of the calibration adjustment fixture. This significantly shortens the adjustment time caused by changes in the number and angle of the impeller blades, and provides high positioning accuracy, adapting to the processing needs of different models of integral impellers.

[0009] A further improvement of the present invention is that the base assembly includes a base body, the spiral lifting assembly is disposed on the top of the base body, the two side columns of the gantry frame are respectively connected to the two sides of the base body, and the gantry frame and the base body are coaxial; the base body is provided with an annular sliding groove assembly with a T-shaped cross section, and the base body is slidably connected to the linear slide assembly through the annular sliding groove assembly.

[0010] A further improvement of the present invention is that the linear slide assembly includes a slide base, the top of which is provided with a slide table surface, and the rear positioning seat assembly is fixed to the slide table surface by screws; T-shaped nut and screw assemblies corresponding to the annular slide groove assembly are respectively provided on both sides of the slide base, the T-shaped nut and screw assemblies are slidably connected to the annular slide groove assembly, and after the T-shaped nut and screw assemblies are loosened, the linear slide assembly can rotate along the annular slide groove assembly on the base body.

[0011] A further improvement of the present invention is that a toothed ring is provided on the top of the base body, located outside the annular slide groove assembly, and a manual adjustment gear assembly that meshes with the toothed ring is provided on the side of the slide base near the toothed ring.

[0012] A further improvement of the present invention is that the spiral lifting assembly includes a spiral lifting machine, which is disposed at the center of the base body, and the top end of the lifting rod of the spiral lifting machine is connected to a lifting platform, and the front positioning seat assembly is fixed to the lifting platform by a pressure plate.

[0013] A further improvement of the present invention is that the double Hooke hinge spindle assembly includes a spindle box, a front Hooke hinge is provided at the front end of the spindle box, and a rear Hooke hinge is provided at the rear end of the spindle box; a front three-R positioning plate is provided at the bottom of the front Hooke hinge, and the front Hooke hinge is connected to the three-R clamp of the front positioning seat assembly through the front three-R positioning plate and a pull stud; a rear three-R positioning plate is provided at the bottom of the rear Hooke hinge, and the rear Hooke hinge is connected to the three-R clamp of the rear positioning seat assembly through the rear three-R positioning plate.

[0014] A further improvement of the present invention is that the workpiece turntable slide assembly includes a slide, which is disposed at the center of the gantry beam via a linear guide pair, and a workpiece turntable is disposed at the end of the slide. A four-head zero-point positioning fixture mother plate is disposed at the bottom of the workpiece turntable, and the workpiece turntable is connected to the calibration and adjustment fixture via the four-head zero-point positioning fixture mother plate.

[0015] A further improvement of the present invention is that the calibration and adjustment fixture includes a marble straightedge, one end of which is slidably connected to an adjustment connecting seat, and the other end of which is sequentially slidably connected to a rear three-R positioning piece and a front three-R positioning piece; a zero-point positioning sub-plate is provided on the top of the adjustment connecting seat, and the adjustment connecting seat is connected to the workpiece turntable through the zero-point positioning sub-plate and the four-head zero-point positioning fixture mother plate.

[0016] A method for using a rapid adjustment device for multiple power heads on a circular array grinding machine includes the following steps: S1. Calculate the distribution angle coordinates of the grinding power head based on the number of blades on the impeller and the circumferential array angle grouping method. The circular array angle grouping method is as follows: Derive the formula for calculating the angle between two adjacent spindles, and set the number of blades as follows: n The number of spindles is N The formula for calculating the spindle spacing angle is derived as follows: ; In the formula, s n =360 / n , Z For a set of integers, [ s n ] is the floor function, if s n If the integer is not a valid integer, then the interval between the two principal axes is... θi quantity n i and θ i+1 for: .

[0017] S2. Loosen the fasteners between the double Hooke hinge spindle assembly, the front positioning seat assembly, and the rear positioning seat assembly, and set them aside for later use; loosen the screws and pressure plate on the front positioning seat assembly and the screws on the rear positioning seat assembly, and set them aside for later use; move the coordinates of the spiral lifting assembly to the zero position through the CNC system.

[0018] S3. Fix the calibration and adjustment fixture on the workpiece turntable slide assembly and move it to the angle coordinate of the grinding power head to be adjusted through the system; loosen the T-nut screw assembly of the linear slide assembly, and coarsely adjust the linear slide assembly to the angle coordinate position by manually adjusting the gear assembly; finely adjust the linear slide assembly by pulling the feed direction of the linear slide assembly parallel to the marble straightedge of the calibration and adjustment fixture to complete the angle adjustment of the linear slide assembly.

[0019] S4. Fix the front positioning seat assembly and the rear positioning assembly to the calibration and adjustment fixture using rivets. The lifting workpiece turntable slide assembly drives the calibration and adjustment fixture, as well as the front positioning seat assembly and the rear positioning assembly on the fixture, to be placed on the lifting platform of the spiral lifting assembly and the slide platform of the linear slide assembly. The front fixed seat assembly is positioned on the lifting platform and fixed with a pressure plate, and the rear fixed assembly is positioned on the slide platform and fixed with screws to complete the indexing and fixing of the front fixed seat assembly and the rear fixed assembly.

[0020] S5. Fix the front Hooke hinge of the double Hooke hinge spindle assembly to the front positioning seat assembly, and fix the rear Hooke hinge to the rear positioning assembly to complete the indexing of a single grinding power head.

[0021] S6. Repeat operations S1-S5 to complete the indexing operations of the remaining grinding power heads.

[0022] As can be seen from the above technical solutions, the beneficial effects of the present invention are: 1. This device significantly improves the adaptability and flexibility of the overall impeller processing equipment through its innovatively designed circumferential array power head adjustment structure. Compared to the existing multi-power head structure with a fixed spindle centerline, this device adopts a sliding connection design between the linear slide assembly and the base, combined with the height adjustment function of the screw lifting assembly. This allows for flexible adjustment of the circumferential position and height of each power head according to the number of blades and the included angle between blades on different impellers, eliminating the need for a complete replacement of the power heads. This overcomes the limitation of existing equipment that can only adapt to a single type of workpiece, greatly expanding the processing range of the equipment.

[0023] 2. This device achieves high efficiency and accuracy in power head adjustment through multiple high-precision positioning and rapid calibration mechanisms. Existing technologies rely on a bottom turntable to switch power head positions, resulting in a relatively fixed power head position that struggles to handle diverse variations in blade parameters. This device, however, utilizes a double Hooke hinge spindle assembly and three-R positioning plates, combined with precise calibration using a calibration and adjustment fixture, to improve power head positioning accuracy to the micrometer level. Furthermore, the adjustment process eliminates the need for individual mechanical alignment of each power head, significantly reducing adjustment time, effectively minimizing equipment downtime, and improving the overall batch production efficiency of the impeller.

[0024] 3. The modular and standardized design of this device further optimizes the ease of operation and maintenance costs. Compared to the complex power head adjustment mechanism in existing technologies, the core components of this device, such as the linear slide assembly and the front and rear positioning seat assemblies, adopt standardized interfaces. Combined with the labor-saving design of the manual adjustment gear assembly, operators can complete the power head adjustment without professional skills, reducing labor costs. At the same time, the error compensation function of the double Hooke hinge structure reduces the impact of part machining accuracy on overall positioning, lowering the difficulty of equipment manufacturing and maintenance. Attached Figure Description

[0025] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0027] Figure 2 This is a top view of the base assembly and the spiral lifting assembly according to a specific embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the base assembly according to a specific embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the spiral lifting assembly according to a specific embodiment of the present invention.

[0030] Figure 5 This is a structural schematic diagram of a linear slide assembly according to a specific embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of the structure of the double Hooke hinge spindle assembly according to a specific embodiment of the present invention.

[0032] Figure 7 This is a schematic diagram of the calibration and adjustment tooling according to a specific embodiment of the present invention.

[0033] Figure 8 This is a schematic diagram of the workpiece turntable slide assembly according to a specific embodiment of the present invention.

[0034] In the diagram: 1. Base assembly; 101. Base body; 102. Gear ring; 103. Annular slide rail assembly; 2. Screw lifting assembly; 201. Lifting platform; 202. Screw lift; 3. Linear slide assembly; 301. Slide base; 302. Slide platform; 303. Manual adjustment gear assembly; 304. T-nut and screw assembly; 4. Double Hooke hinge spindle assembly; 401. Rear Hooke hinge; 402. Front Hooke hinge; 403. Spindle box; 404. 405. Rear 3R positioning plate; 5. Front 3R positioning plate; 6. Front positioning seat assembly; 7. Rear positioning seat assembly; 8. Calibration and adjustment fixture; 9. Marble straightedge; 10. Adjustment connecting seat; 11. Adjusting rear 3R positioning plate; 12. Adjusting front 3R positioning plate; 13. Zero point positioning sub-plate; 14. Workpiece turntable slide assembly; 15. Slide; 16. Workpiece turntable; 17. Four-head zero point positioning fixture mother plate; 18. Gantry frame; 19. Linear guide pair. Detailed Implementation

[0035] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0036] Now refer to Figures 1-8 The following is a description in conjunction with specific embodiments: The present invention discloses a rapid adjustment device for a multi-power head of a circular array grinding machine, comprising a base assembly 1, on which a spiral lifting assembly 2 is disposed. Multiple linear slide assemblies 3 are evenly arranged circumferentially on the outer side of the spiral lifting assembly 2, and the linear slide assemblies 3 are slidably connected to the base assembly 1, allowing the linear slide assemblies 3 to rotate circumferentially on the base assembly 1. Each linear slide assembly 3 is provided with a rear positioning seat assembly 6, and the spiral lifting assembly 2 is provided with multiple corresponding rear positioning seat assemblies 6. The front positioning seat assembly 5, and a corresponding set of front positioning seat assemblies 5 and rear positioning seat assemblies 6 are connected to a double Hooke hinge spindle assembly 4. The front part of the double Hooke hinge spindle assembly 4 is connected to the front positioning seat assembly 5, and the rear part of the double Hooke hinge spindle assembly 4 is connected to the rear positioning seat assembly 6. A gantry 9 located outside the linear slide assembly 3 is provided on the base assembly 1. The crossbeam of the gantry 9 is connected to the workpiece turntable slide assembly 8 through a linear guide pair 901. The end of the workpiece turntable slide assembly 8 is connected to a calibration and adjustment fixture 7.

[0037] The base assembly 1 provides stable support for the overall structure. The spiral lifting assembly 2 is fixed at the center of the base assembly 1, supporting the front positioning seat assembly 5 and allowing its height to be adjusted. Multiple linear slide assemblies 3 are evenly arranged around the circumference of the base assembly 1. Through sliding connection with the base assembly 1, they can rotate circumferentially to adjust their position, thereby driving the rear positioning seat assembly 6 on them to move synchronously. Each corresponding front positioning seat assembly 5 and rear positioning seat assembly 6 together clamp the double Hooke hinge spindle assembly 4. The positioning and fixing of the grinding power head double Hooke hinge spindle assembly is achieved through the connection between the front positioning seat assembly 5 and the front of the double Hooke hinge spindle assembly 4, and the connection between the rear positioning seat assembly 6 and the rear of the double Hooke hinge spindle assembly 4. The gantry 9 provides the mounting base for the workpiece turntable slide assembly 8. The workpiece turntable slide assembly 8 moves along the crossbeam of the gantry 9 through the linear guide pair 901. The calibration and adjustment fixture 7 at its end can accurately calibrate the positions of the linear slide assembly 3 and the front and rear positioning seat assemblies.

[0038] This device achieves rapid positioning of the circumferential array grinding power head through the circumferential rotation adjustment of the linear slide assembly 3 and the precise calibration of the calibration adjustment fixture 7. This significantly shortens the adjustment time caused by changes in the number and angle of the impeller blades, and provides high positioning accuracy, adapting to the processing needs of different models of integral impellers.

[0039] Specifically, refer to Figure 3The base assembly 1 includes a base body 101, the spiral lifting assembly 2 is disposed on the top of the base body 101, the two side columns of the gantry frame 9 are respectively connected to the two sides of the base body 101, and the gantry frame 9 is coaxial with the base body 101; the base body 101 is provided with an annular slide groove assembly 103 with a T-shaped cross section, and the base body 101 is slidably connected to the linear slide assembly 3 through the annular slide groove assembly 103.

[0040] The base body 101 serves as the core load-bearing structure, providing an installation reference for the spiral lifting assembly 2, the gantry frame 9, and the linear slide assembly 3. The spiral lifting assembly 2 is located at the center of the base body 101, ensuring the symmetrical distribution of the front positioning seat assembly 5. The two side columns of the gantry frame 9 are connected to the two sides of the base body 101 and are coaxial, ensuring that the movement trajectory of the workpiece turntable slide assembly 8 is coaxial with the center of the circumferential array power head, improving calibration consistency. The T-shaped annular slide groove assembly 103 on the base body 101 slides in conjunction with the linear slide assembly 3, providing guidance for the circumferential rotation of the linear slide assembly 3.

[0041] The device ensures smooth and unbiased sliding of the linear slide assembly 3 through the T-shaped structure of the annular slide rail group 103. The coaxial design of the gantry 9 and the base reduces calibration errors. The overall structure has strong symmetry, which improves the stability and accuracy of the power head adjustment.

[0042] Specifically, refer to Figure 5 The linear slide assembly 3 includes a slide base 301, and a slide table surface 302 is provided on the top of the slide base 301. The rear positioning seat assembly 6 is fixed to the slide table surface 302 by screws. T-shaped nut and screw assemblies 304 corresponding to the annular slide groove assembly 103 are respectively provided on both sides of the slide base 301. The T-shaped nut and screw assemblies 304 are slidably connected to the annular slide groove assembly 103. After the T-shaped nut and screw assemblies 304 are loosened, the linear slide assembly 3 can rotate along the annular slide groove assembly 103 on the base body 101.

[0043] The slide base 301 is connected to the annular slide groove assembly 103 of the base body 101 via the T-nut and screw assembly 304. When the T-nut and screw assembly is loosened, the linear slide assembly 3 can rotate circumferentially along the annular slide groove assembly 103. After adjusting to the target angle, the screw assembly is tightened to achieve fixation. The slide table surface 302 provides an installation plane for the rear positioning seat assembly 6, ensuring that the rear positioning seat assembly 6 and the linear slide assembly 3 move synchronously.

[0044] The tightening and loosening operation of the above-mentioned T-type nut and screw assembly 304 is simple. In conjunction with the annular slide groove assembly 103, it can realize the rapid rotation and fixation of the linear slide assembly 3, reducing the cumbersome steps of the existing adjustment method and greatly improving the efficiency of the power head angle adjustment.

[0045] Specifically, refer to Figure 3 and Figure 5 The top of the base body 101 is provided with a gear ring 102 located outside the annular slide groove assembly 103, and the side of the slide base 301 near the gear ring 102 is provided with a manual adjustment gear assembly 303 that meshes with the gear ring 102.

[0046] The gear ring 102 on the top of the base body 101 meshes with the manual adjustment gear assembly 303 of the slide base 301. The operator rotates the manual adjustment gear assembly to drive the linear slide assembly 3 to rotate circumferentially along the annular slide groove assembly 103 by the gear transmission, and controls the rotation angle by the meshing accuracy of the gears.

[0047] The aforementioned gear meshing transmission has high angle control precision, avoiding the errors of manual direct pushing, making the angle adjustment of the linear slide assembly more precise and labor-saving, and further improving adjustment efficiency.

[0048] Specifically, refer to Figure 4 The spiral lifting assembly 2 includes a spiral lifting machine 202, which is located at the center of the base body 101. The top end of the lifting rod of the spiral lifting machine 202 is connected to a lifting platform 201, and the front positioning seat assembly 5 is fixed to the lifting platform 201 by a pressure plate.

[0049] The screw jack 202 drives the lifting platform 201 to rise and fall vertically, which in turn drives the front positioning seat assembly 5 fixed on the platform to adjust its height synchronously to adapt to the processing height requirements of different integral impellers. The front positioning seat assembly 5 is fixed to the lifting platform 201 by a pressure plate to ensure that the front positioning seat assembly 5 does not loosen after the height is adjusted.

[0050] The aforementioned screw jack 202 has high lifting accuracy and can achieve fine adjustment of the height of the front positioning seat assembly 5 to meet the height processing requirements of different impellers. The pressure plate fixing method ensures that the front positioning seat assembly 5 is stable and avoids vibration during processing from affecting accuracy.

[0051] Specifically, refer to Figure 6 The double Hooke hinge spindle assembly 4 includes a spindle box 403. A front Hooke hinge 402 is provided at the front end of the spindle box 403, and a rear Hooke hinge 401 is provided at the rear end of the spindle box 403. A front three-R positioning piece 405 is provided at the bottom of the front Hooke hinge 402. The front Hooke hinge 402 is connected to the three-R clamp of the front positioning seat assembly 5 through the front three-R positioning piece 405 and a pull stud. A rear three-R positioning piece 404 is provided at the bottom of the rear Hooke hinge 401. The rear Hooke hinge 401 is connected to the three-R clamp of the rear positioning seat assembly 6 through the rear three-R positioning piece 404.

[0052] The front Hooke hinge 402 of the double Hooke hinge spindle assembly 4 engages with the 3R clamp of the front positioning seat assembly 5 through the front three-R positioning plate 405, and the rear Hooke hinge 401 engages with the 3R clamp of the rear positioning seat assembly 6 through the rear three-R positioning plate 404. The pull stud fastening achieves rapid positioning. The Hooke hinge structure allows the spindle box 403 to self-adjust within a small angle range to compensate for installation errors.

[0053] This device achieves high-precision positioning of the double Hooke hinge spindle assembly 4 through the cooperation of the three-R positioning plate and the three-R clamp. The pull pin connection enables quick loading and unloading. The angle compensation function of the Hooke hinge reduces the positioning deviation caused by the machining error of the parts and improves the installation accuracy of the power head.

[0054] Specifically, refer to Figure 7 The workpiece turntable slide assembly 8 includes a slide 801, which is mounted at the center of the crossbeam of the gantry frame 9 via a linear guide pair 901. A workpiece turntable 802 is mounted at the end of the slide 801. A four-head zero-point positioning fixture mother plate 803 is mounted at the bottom of the workpiece turntable 802. The workpiece turntable 802 is connected to the calibration and adjustment fixture 7 via the four-head zero-point positioning fixture mother plate 803.

[0055] The slide block 801 moves along the linear guide pair 901 of the crossbeam of the gantry frame 9, driving the workpiece turntable 802 and the four-head zero-point positioning fixture mother plate 803 at the end to translate; the four-head zero-point positioning fixture mother plate 803 quickly docks with the zero-point positioning daughter plate of the calibration and adjustment fixture 7 to realize the quick loading and unloading of the calibration and adjustment fixture; the workpiece turntable 802 can be rotated to adjust the angle so that the calibration and adjustment fixture is aligned with the power head to be calibrated.

[0056] This device ensures smooth movement of the slide 801 through the linear guide pair 901, and the quick docking function of the zero-point positioning fixture greatly shortens the loading and unloading time of the calibration adjustment fixture 7. The angle adjustment of the workpiece turntable 802 improves the calibration flexibility, thereby improving the overall calibration efficiency of this device.

[0057] Specifically, refer to Figure 8 The calibration and adjustment fixture 7 includes a marble straightedge 701. One end of the marble straightedge 701 is slidably connected to an adjustment connecting seat 702. The other end of the marble straightedge 701 is sequentially slidably connected to a rear three-R positioning piece 703 and a front three-R positioning piece 704. The top of the adjustment connecting seat 702 is provided with a zero-point positioning sub-plate 705. The adjustment connecting seat 702 is connected to the workpiece turntable 802 through the zero-point positioning sub-plate 705 and the four-head zero-point positioning fixture mother plate 803.

[0058] The marble straightedge 701 serves as a high-precision reference. Its adjustment connecting seat 702, rear three-R positioning piece 703, and front three-R positioning piece 704 can slide along the straightedge to be adjusted to match the position of the power head to be calibrated. The adjustment connecting seat 702 is quickly connected to the four-head zero-point positioning fixture mother plate 803 of the workpiece turntable 802 through the zero-point positioning sub-plate 705, realizing the precise docking of the calibration adjustment fixture and the workpiece turntable slide assembly, which is used to calibrate the position of the front and rear positioning seat assemblies.

[0059] This device ensures the reliability of the calibration benchmark through the high precision of the 701 marble straightedge. The sliding positioning plate adapts to the calibration requirements of power heads with different parameters. The rapid docking of the zero-point positioning sub-disc and the mother disc reduces calibration preparation time and improves the accuracy of power head positioning and calibration efficiency.

[0060] The method of using the rapid adjustment device for multiple power heads of a circular array grinding machine according to the present invention includes the following steps: S1. Calculate the distribution angle coordinates of the grinding power head based on the number of blades on the impeller and the circumferential array angle grouping method. The circular array angle grouping method is as follows: To ensure that each spindle of the machine tool corresponds identically to multiple blades of the integral impeller, a formula for calculating the angle between adjacent spindles is derived, and the number of blades is set to be... n The number of spindles is N The formula for calculating the spindle spacing angle is derived as follows: ; In the formula, s n =360 / n , Z For a set of integers, [ s n ] is the floor function, if s n If the integer is not a valid integer, then the interval between the two principal axes is... θ i quantity n i and θ i+1 for: ; The following example illustrates the parameters of a bladed disk with 83 blades and 8 main shafts. The calculated interval angles that need to be adjusted for each main shaft are 47.7109° for main shaft 1-3 and 43.3735° for main shaft 4-8.

[0061] S2. Loosen the fasteners between the double Hooke hinge spindle assembly 4, the front positioning seat assembly 5, and the rear positioning seat assembly 6, and set them aside for later use; loosen the screws and pressure plate on the front positioning seat assembly 5 and the screws on the rear positioning seat assembly 6, and set them aside for later use; move the coordinates of the spiral lifting assembly 2 to the zero position through the CNC system.

[0062] S3. The calibration and adjustment fixture 7 is fixed on the workpiece turntable slide assembly 8 and moved to the angle coordinate of the grinding power head to be adjusted by the system; the T-nut screw assembly 304 of the linear slide assembly 3 is loosened, and the linear slide assembly 3 is coarsely adjusted to the angle coordinate position by manually adjusting the gear assembly 303. Fine adjustment is performed by pulling the feed direction of the linear slide assembly 3 parallel to the marble straightedge 701 of the calibration and adjustment fixture 7 to complete the angle adjustment of the linear slide assembly 3.

[0063] S4. The front positioning seat assembly 5 and the rear positioning assembly 6 are fixed to the calibration adjustment fixture 7 by means of rivets. The lifting workpiece turntable slide assembly 8 drives the calibration adjustment fixture 7 and the front positioning seat assembly 5 and the rear positioning assembly 6 on the fixture to be placed on the lifting platform 201 of the spiral lifting assembly 2 and the slide platform 302 of the linear slide assembly 3. The front fixed seat assembly 5 is positioned on the lifting platform 201 and fixed with a pressure plate, and the rear fixed assembly 6 is positioned on the slide platform 302 and fixed with screws to complete the indexing and fixing of the front fixed seat assembly 5 and the rear fixed assembly 6.

[0064] S5. Fix the front Hooke hinge 402 of the double Hooke hinge spindle assembly 4 to the front positioning seat assembly 5, and fix the rear Hooke hinge 401 to the rear positioning assembly 6 to complete the indexing of a single grinding power head.

[0065] S6. Repeat operations S1-S5 to complete the indexing operations of the remaining grinding power heads.

[0066] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rapid adjustment device for multiple power heads of a circular array grinding machine, comprising a base assembly (1), characterized in that, The base assembly (1) is provided with a spiral lifting assembly (2), and a plurality of linear slide assemblies (3) are provided on the outer side of the spiral lifting assembly (2) and are evenly arranged in the circumferential direction. The linear slide assemblies (3) are slidably connected to the base assembly (1) so that the linear slide assemblies (3) can rotate in the circumferential direction on the base assembly (1). Each linear slide assembly (3) is provided with a rear positioning seat assembly (6), and the spiral lifting assembly (2) is provided with a plurality of front positioning seat assemblies (5) that correspond one-to-one with the rear positioning seat assembly (6). The base assembly (5) and the rear positioning base assembly (6) are connected together to the double Hooke hinge spindle assembly (4). The front part of the double Hooke hinge spindle assembly (4) is connected to the front positioning base assembly (5), and the rear part of the double Hooke hinge spindle assembly (4) is connected to the rear positioning base assembly (6). A gantry frame (9) located outside the linear slide assembly (3) is provided on the base assembly (1). The crossbeam of the gantry frame (9) is connected to the workpiece turntable slide assembly (8) through the linear guide pair (901). The end of the workpiece turntable slide assembly (8) is connected to the calibration and adjustment fixture (7).

2. The rapid adjustment device for multiple power heads of a circular array grinding machine according to claim 1, characterized in that, The base assembly (1) includes a base body (101), the spiral lifting assembly (2) is disposed on the top of the base body (101), and the two side columns of the gantry frame (9) are respectively connected to the two sides of the base body (101); the base body (101) is provided with an annular slide groove assembly (103) with a T-shaped cross section, and the base body (101) is slidably connected to the linear slide assembly (3) through the annular slide groove assembly (103).

3. The rapid adjustment device for multiple power heads of a circular array grinding machine according to claim 2, characterized in that, The linear slide assembly (3) includes a slide base (301), and a slide table surface (302) is provided on the top of the slide base (301). The rear positioning seat assembly (6) is fixed to the slide table surface (302) by screws. T-shaped nut and screw assemblies (304) corresponding to the annular slide groove assembly (103) are respectively provided on both sides of the slide base (301). The T-shaped nut and screw assembly (304) is slidably connected to the annular slide groove assembly (103).

4. The rapid adjustment device for multiple power heads of a circular array grinding machine according to claim 3, characterized in that, The top of the base body (101) is provided with a gear ring (102) located outside the annular slide groove assembly (103), and the side of the slide base (301) near the gear ring (102) is provided with a manual adjustment gear assembly (303) that meshes with the gear ring (102).

5. A rapid adjustment device for multiple power heads of a circular array grinding machine according to claim 3, characterized in that, The spiral lifting assembly (2) includes a spiral lifting machine (202), which is located at the center of the base body (101). The top end of the lifting rod of the spiral lifting machine (202) is connected to the lifting platform (201), and the front positioning seat assembly (5) is fixed to the lifting platform (201) by a pressure plate.

6. A rapid adjustment device for multiple power heads of a circular array grinding machine according to claim 5, characterized in that, The double Hooke hinge spindle assembly (4) includes a spindle box (403), a front Hooke hinge (402) is provided at the front end of the spindle box (403), and a rear Hooke hinge (401) is provided at the rear end of the spindle box (403); a front three-R positioning piece (405) is provided at the bottom of the front Hooke hinge (402), and the front Hooke hinge (402) is connected to the three-R clamp of the front positioning seat assembly (5) through the front three-R positioning piece (405) and the pull stud; a rear three-R positioning piece (404) is provided at the bottom of the rear Hooke hinge (401), and the rear Hooke hinge (401) is connected to the three-R clamp of the rear positioning seat assembly (6) through the rear three-R positioning piece (404).

7. A rapid adjustment device for multiple power heads of a circular array grinding machine according to claim 1, characterized in that, The workpiece turntable slide assembly (8) includes a slide (801), which is located at the center of the crossbeam of the gantry frame (9) via a linear guide pair (901). A workpiece turntable (802) is provided at the end of the slide (801), and a four-head zero-point positioning fixture mother plate (803) is provided at the bottom of the workpiece turntable (802). The workpiece turntable (802) is connected to the calibration and adjustment fixture (7) via the four-head zero-point positioning fixture mother plate (803).

8. A rapid adjustment device for multiple power heads of a circular array grinding machine according to claim 7, characterized in that, The calibration and adjustment fixture (7) includes a marble straightedge (701), one end of which is slidably connected to an adjustment connecting seat (702), and the other end of which is slidably connected to a rear three-R positioning piece (703) and a front three-R positioning piece (704); a zero-point positioning sub-plate (705) is provided on the top of the adjustment connecting seat (702), and the adjustment connecting seat (702) is connected to the workpiece turntable (802) through the zero-point positioning sub-plate (705) and the four-head zero-point positioning fixture mother plate (803).

9. A method of using a rapid adjustment device for multiple power heads of a circular array grinding machine, as described in any one of claims 1-8, characterized in that... Includes the following steps: S1. Calculate the distribution angle coordinates of the grinding power head based on the number of blades on the impeller and the circumferential array angle grouping method. The circular array angle grouping method is as follows: Derive the formula for calculating the angle between two adjacent spindles, and set the number of blades as follows: n The number of spindles is N The formula for calculating the spindle spacing angle is derived as follows: ； In the formula, s n =360 / n Z is the set of integers, [ s n ] is the floor function, if s n If the integer is not a valid integer, then the interval between the two principal axes is... θ i quantity n i and θ i+1 for: ； S2. Loosen the fasteners between the double Hooke hinge spindle assembly (4), the front positioning seat assembly (5), and the rear positioning seat assembly (6), and set them aside for later use; loosen the screws and pressure plate on the front positioning seat assembly (5) and the screws on the rear positioning seat assembly (6), and set them aside for later use; move the coordinates of the spiral lifting assembly (2) to the zero position through the CNC system; S3. Fix the calibration adjustment fixture (7) on the workpiece turntable slide assembly (8) and move it to the angle coordinate of the grinding power head to be adjusted through the system; loosen the T-nut screw assembly (304) of the linear slide assembly (3), and coarsely adjust the linear slide assembly (3) to the angle coordinate position by manually adjusting the gear assembly (303). Finely adjust the linear slide assembly (3) by pulling the feed direction of the linear slide assembly (3) parallel to the marble straightedge (701) of the calibration adjustment fixture (7) to complete the angle adjustment of the linear slide assembly (3); S4. Fix the front positioning seat assembly (5) and the rear positioning assembly (6) to the calibration adjustment fixture (7) by means of rivets. The lifting workpiece turntable slide assembly (8) drives the calibration adjustment fixture (7) and the front positioning seat assembly (5) and the rear positioning assembly (6) on the fixture to be placed on the lifting table surface (201) of the spiral lifting assembly (2) and the slide table surface (302) of the linear slide assembly (3). The front fixed seat assembly (5) is positioned on the lifting table surface (201) and fixed with a pressure plate, and the rear fixed assembly (6) is positioned on the slide table surface (302) and fixed with screws to complete the indexing and fixing of the front fixed seat assembly (5) and the rear fixed assembly (6). S5. Fix the front Hooke hinge (402) of the double Hooke hinge spindle assembly (4) to the front positioning seat assembly (5), and fix the rear Hooke hinge (401) to the rear positioning assembly (6) to complete the indexing of a single grinding power head. S6. Repeat operations S1-S5 to complete the indexing operations of the remaining grinding power heads.

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