Marine diesel engine flywheel drilling positioning tool

Abstract

The invention discloses a drilling and positioning tool for a flywheel of a marine diesel engine, comprising a mounting base, an inner positioning assembly, a driving assembly and an outer positioning assembly. The inner positioning assembly is arranged concentrically with the outer positioning assembly, and the driving assembly is connected to the inner positioning assembly in a power connection. The inner positioning assembly is used to position the inner ring of the flywheel and adjust the height, and the driving assembly drives it to rotate around the axis. The outer positioning assembly comprises a positioning clamp seat, an upper positioning jaw, a lower positioning jaw, a radial positioning assembly and an axial positioning assembly. The positioning clamp seat is distributed on the mounting base in an annular array and is equipped with an upper positioning jaw and a lower positioning jaw. The radial positioning assembly is linked to the positioning clamp seat to drive its radial retraction and extension, and the axial positioning assembly is linked to the jaw to drive its axial lifting and lowering. The invention is superior in terms of precise positioning, real-time detection, processing efficiency and finished product quality, and provides reliable guarantee for efficient and high-quality processing of flywheels of marine diesel engines.

Description

Technical Field

[0001] The invention relates to the technical field of tooling fixtures, in particular to a drilling and positioning tool for a flywheel of a marine diesel engine. Background Art

[0002] In the manufacturing process of marine diesel engines, the flywheel is a key component, and its processing accuracy directly affects the overall performance and service life of the diesel engine. Therefore, accurate positioning and drilling of the flywheel is crucial. However, the traditional flywheel positioning tooling has some significant deficiencies in practical applications, which are mainly manifested in the following aspects:

[0003] First, the traditional flywheel positioning tool usually only applies radial force to the flywheel towards the axis. Although this method can fix the flywheel to a certain extent, it cannot ensure the precise positioning of the flywheel in the horizontal direction. In actual operation, this positioning method often causes the flywheel to move slightly during the drilling process, thus affecting the accuracy of the drilling, and further affecting the assembly and performance of the flywheel.

[0004] Secondly, the traditional flywheel positioning tooling usually completely locks the flywheel during use, keeping it in a completely fixed state. Although this fixing method can ensure that the flywheel does not move significantly during drilling, it also brings another problem: the flywheel cannot be tested for dynamic balance in real time. In actual production, the dynamic balance of the flywheel is crucial to its performance. If the balance hole cannot be drilled in real time according to the dynamic balance test data, the processing quality of the flywheel will be seriously affected.

[0005] In order to perform dynamic balancing test, the traditional method requires the flywheel to be removed from the positioning fixture and transferred to the dynamic balancing test equipment for testing. After the test is completed, the flywheel is repositioned for processing of the balancing hole. This operation method not only increases the complexity of the process flow, but also easily leads to a decrease in the secondary positioning accuracy of the flywheel due to multiple disassembly and transfer, further affecting the accuracy and efficiency of the flywheel drilling process.

[0006] Therefore, there is an urgent need for an improved flywheel positioning tool that can ensure the precise positioning of the flywheel while allowing real-time dynamic balancing detection of the flywheel and processing of balancing holes based on the detection data, thereby improving the processing accuracy and efficiency of flywheel drilling. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a drilling positioning tool for a flywheel of a marine diesel engine, which exhibits superior performance in terms of precise positioning, real-time detection, processing efficiency and finished product quality, solves many problems in traditional technologies, and provides reliable technical guarantee for the efficient and high-quality processing of flywheels of marine diesel engines.

[0008] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a marine diesel engine flywheel drilling positioning tool, including a mounting base and an inner positioning component assembled in the mounting base, a drive component and an outer positioning component arranged outside the inner positioning component, the inner positioning component and the outer positioning component are kept concentrically arranged, and the drive component and the inner positioning component are kept in power connection.

[0009] The inner positioning assembly is used to position the inner ring of the flywheel of the marine diesel engine and adjust the positioning height of the flywheel, and the driving assembly is used to drive the inner positioning assembly and the flywheel to rotate around its own axis.

[0010] The external positioning assembly includes a positioning clamp seat, an upper positioning jaw, a lower positioning jaw, a radial positioning assembly, and an axial positioning assembly. The positioning clamp seat includes multiple groups distributed in a ring array on the mounting base and running along the diameter direction of the mounting base. Each group of the positioning clamp seats is equipped with an upper positioning jaw and a lower positioning jaw. The radial positioning assembly is linked to the positioning clamp seat, and the axial positioning assembly is linked to the upper positioning jaw and the lower positioning jaw.

[0011] In some of the implementations, in order to ensure that the mounting base can be stably assembled in the processing equipment (machining center, CNC drilling machine), and to ensure that the internal positioning component, the drive component, and the external positioning component can be stably assembled in the mounting base, the following technical solutions are provided.

[0012] The mounting base includes an assembly base and an assembly cover shell. An upper flange is fixedly connected to the bottom of the assembly cover shell. A lower flange matched with the upper flange is fixedly connected to the assembly base. The upper flange and the lower flange are fixedly connected by a bolt assembly. An assembly cavity is opened in the assembly base and the assembly cover shell.

[0013] In some of the implementations, in order to ensure that the inner positioning plate can effectively position the inner ring of the flywheel, and ensure that the inner positioning plate can carry the flywheel and perform height adjustment, the following technical solutions are provided.

[0014] A guide through hole is opened at the axis center of the assembly cover shell, and the internal positioning component includes an assembly shaft, a carrying plate, and a chuck. The assembly shaft is assembled in the guide through hole in a relative rotation and sliding manner. The carrying plate is fixedly connected to the top of the assembly shaft. The chuck is fixedly assembled at the axis center of the carrying plate. Multiple groups of claws are evenly mounted on the chuck, and the claws are used to clamp the inner wall of the inner ring of the flywheel.

[0015] In some of the implementations, in order to ensure that the inner positioning assembly can drive the flywheel clamped and positioned thereon to adjust its height position without affecting the normal operation of the inner positioning assembly and the flywheel around the axis, the following technical solutions are provided.

[0016] The inner positioning assembly also includes an assembly disk and a telescopic cylinder. Two groups of limit disks are fixedly connected to the assembly shaft. The assembly disk is rotatably installed on the periphery of the assembly shaft and arranged between the two groups of limit disks. The telescopic cylinder includes multiple groups arranged on the periphery of the assembly shaft and arranged in the vertical direction. The fixed end of the telescopic cylinder is fixedly connected to the assembly base, and the movable end of the telescopic cylinder is fixedly connected to the assembly disk.

[0017] In some of the implementations, in order to ensure that the drive assembly can be stably installed in the assembly cavity in the mounting base, and that the drive assembly can drive the assembly shaft to operate stably without affecting the free lifting and lowering of the assembly shaft, the following technical solutions are provided.

[0018] The driving assembly includes a spline shaft A and a driving motor. The spline shaft A is rotatably installed at the axis center of the assembly base and is arranged in the vertical direction. A spline groove A is provided at the axis center of the assembly shaft and is slidably connected to the spline shaft A. The driving motor is fixedly installed on the assembly base, and a driving bevel gear is fixedly connected to the output shaft of the driving motor. A transmission bevel gear is fixedly connected to the spline shaft A, and the transmission bevel gear is meshed with the driving bevel gear.

[0019] In some of the implementations, in order to ensure that the radial positioning assembly can drive the positioning clamp to stably retract and extend along a straight line on the mounting base to achieve accurate positioning of the flywheel, the following technical solutions are provided.

[0020] A plurality of radially arranged linear guide grooves are evenly arranged on the top of the assembly cover shell, a connecting seat is fixedly connected to the bottom of the positioning clamp seat, and the connecting seat is slidably installed in the linear guide grooves.

[0021] The radial positioning assembly includes a driving disk and an adjusting motor A. The driving disk is rotatably installed in the assembly cavity. A plurality of arc guide grooves are evenly arranged on the driving disk. A guide column is fixedly connected to the bottom of the connecting seat. The guide column and the arc guide groove are matched and combined. The adjusting motor A is fixedly installed in the assembly cavity, and a bevel gear A is fixedly connected to the output shaft of the adjusting motor A. A bevel gear a that meshes with the bevel gear A is fixedly connected to the driving disk.

[0022] In some of the implementations, in order to ensure that the drive disc can be stably installed in the assembly cavity and that the arrangement of the drive disc and bevel gear a and the inner positioning assembly at the axis do not interfere with spatial movement, the following technical solutions are provided.

[0023] Two sets of limiting rings A are fixedly connected to the inner wall of the assembly cover shell, and the driving disk is rotatably installed between the two sets of limiting rings A. A clearance hole A is opened at the axis of the driving disk and the bevel gear a. The assembly shaft, the assembly disk, and the telescopic cylinder are all arranged on the inner side of the clearance hole A, and the driving motor, the driving bevel gear, and the transmission bevel gear are all arranged below the driving disk and the bevel gear a.

[0024] In some of the implementations, in order to ensure that the upper positioning jaw and the lower positioning jaw can be stably assembled on the positioning clamp seat, and at the same time, the upper and lower surfaces of the outer edge of the flywheel are clamped and positioned by the reverse operation of the upper and lower positioning jaws, the following technical solutions are provided.

[0025] The upper and lower ends of the positioning clamp seat are fixedly connected to the limit seats, the upper positioning clamp jaw and the lower positioning clamp jaw are slidably sleeved on the periphery of the positioning clamp seat, and the upper positioning clamp jaw and the lower positioning clamp jaw are arranged between the two groups of limit seats.

[0026] A vertically arranged threaded rod is rotatably mounted on the limit seat, and two sections of threaded grooves with opposite spiral directions are arranged on the threaded rod. The two sections of threaded grooves are respectively screwed to the upper positioning jaw and the lower positioning jaw, and the threaded rod is dynamically connected to the axial positioning assembly.

[0027] In some of the implementations, in order to ensure that the axial positioning assembly can be stably installed in the assembly cavity and that the axial positioning assembly can transmit power to the threaded rods on each group of positioning clamp seats, the following technical solutions are provided.

[0028] A mounting sleeve is fixedly connected inside the assembly cover shell, an assembly groove arranged in the assembly cavity is opened on the connecting seat, a No. 1 bevel gear arranged in the assembly groove is fixedly connected to the bottom end of the threaded rod, a horizontally arranged mounting shaft is rotatably installed in the assembly groove, and a No. 2 bevel gear meshing with the No. 1 bevel gear is fixedly connected to the mounting shaft.

[0029] The axial positioning assembly includes a bevel gear B, an adjusting motor B and multiple groups of spline shafts B distributed in a ring array. The spline shaft B is rotatably installed between the side wall of the assembly cover shell and the mounting sleeve and is arranged radially along the assembly cover shell. A spline groove B is opened on the mounting shaft and is slidably connected to the spline shaft B. The bevel gear B is rotatably installed on the inner side of the mounting sleeve. The inner end of the spline shaft B is fixedly connected to a bevel gear b that is meshed with the bevel gear B. The adjusting motor B is fixedly installed in the assembly cover shell, and a number three bevel gear is fixedly connected to the output shaft of the adjusting motor B. The number three bevel gear is meshed with the bevel gear B.

[0030] In some of the implementations, in order to ensure that the bevel gear B can be stably assembled inside the mounting sleeve and avoid spatial motion interference between the assembled mounting sleeve, bevel gear B and the assembly shaft, assembly disk, and telescopic cylinder in the internal positioning assembly, the following technical solution is provided.

[0031] Two sets of limit rings B are fixedly connected to the inner wall of the installation sleeve, and the bevel gear B is rotatably installed between the two sets of limit rings B. A clearance hole B is opened at the axis center of the bevel gear B, and the assembly shaft, assembly disk, and telescopic cylinder are all arranged on the inner side of the clearance hole B.

[0032] Beneficial effects of the present invention:

[0033] 1. Accurate horizontal positioning:

[0034] Through the cooperation of the upper positioning jaw, the lower positioning jaw and the positioning clamp seat, the outer edge of the flywheel and its upper and lower surfaces can be effectively clamped and positioned. Compared with the traditional method of only applying radial force, the present application can ensure the double precise positioning of the flywheel in the horizontal and vertical directions, effectively prevent the flywheel from being displaced during the drilling process, and improve the accuracy of drilling.

[0035] 2. Real-time dynamic balance detection:

[0036] Traditional tooling completely locks the flywheel, making it impossible to perform real-time dynamic balancing detection. This application uses innovative design to allow the flywheel to be dynamically balanced while in a positioned clamping state. In this way, dynamic balancing data can be obtained in real time during the flywheel drilling process, and the balancing hole can be processed based on the detection results, thereby significantly improving the processing quality of the flywheel.

[0037] 3. Improve processing efficiency:

[0038] The traditional method requires the flywheel to be repeatedly disassembled and transported between the positioning tooling and the dynamic balancing detection equipment, which is time-consuming and labor-intensive and easily affects the secondary positioning accuracy. The design of this application enables the flywheel to complete dynamic balancing detection and balancing hole processing after one fixation, without the need for multiple transfers and repositioning, greatly simplifying the process and improving processing efficiency.

[0039] 4. Improve flywheel quality and performance:

[0040] Through precise positioning and real-time dynamic balancing detection, the present application ensures the flywheel drilling accuracy while also ensuring the flywheel's dynamic balance, effectively improving the flywheel's overall processing quality and performance. The flywheel produced in this way can exhibit better stability and durability in subsequent diesel engine operation.

[0041] In summary, the flywheel drilling positioning tooling provided in this application demonstrates superior performance in terms of precise positioning, real-time detection, processing efficiency and finished product quality, solves many problems in traditional technologies, and provides reliable technical guarantees for efficient and high-quality processing of marine diesel engine flywheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of the present invention;

[0043] Figure 2 It is a structural schematic diagram of the installation base in the present invention when it is in a cut-away state;

[0044] Figure 3 For the Figure 2 A schematic diagram of the structure from another perspective;

[0045] Figure 4 It is a structural schematic diagram of the mounting base in a cutaway state;

[0046] Figure 5 It is a structural diagram of the combination of the internal positioning component and the driving component;

[0047] Figure 6 It is a schematic diagram of the structure of the assembly shaft and the components installed thereon;

[0048] Figure 7 It is a schematic diagram of the structure of the external positioning component;

[0049] Figure 8 It is a structural diagram of the external positioning component from another perspective;

[0050] Fig. 9 It is a schematic diagram of the upper half structure of the positioning clamp (in a cutaway state) and the components installed thereon;

[0051] Fig.10 It is a schematic diagram of the structure of the lower half of the positioning clamp seat (in a cutaway state) and the components installed thereon;

[0052] Fig.11 It is a schematic diagram of the structure of the installation shaft and the components installed thereon.

[0053] In the figure: 11 assembly base, 111 lower flange, 112 connecting through hole, 113 assembly sink, 114 support frame, 12 assembly cover, 121 upper flange, 122 guide through hole, 123 linear guide groove, 124 limit ring A, 125 mounting sleeve, 1251 limit ring B, 13 bolt assembly, 14 assembly cavity, 21 assembly shaft, 211 limit plate, 212 spline groove A, 22 bearing plate, 23 chuck, 24 assembly plate, 25 telescopic cylinder, 31 positioning clamp seat, 311 connecting seat, 312 guide column, 313 limit seat, 314 threaded rod, 3141 No. 1 bevel gear , 315 assembly groove, 316 installation shaft, 3161 second bevel gear, 3162 spline groove B, 317 protective cover, 32 upper positioning jaw, 33 lower positioning jaw, 341 driving plate, 3411 arc guide groove, 3412 bevel gear a, 3413 make way through hole A, 342 adjusting motor A, 3421 bevel gear A, 351 bevel gear B, 3511 make way through hole B, 352 adjusting motor B, 3521 third bevel gear, 353 spline shaft B, 3531 bevel gear b, 41 spline shaft A, 411 transmission bevel gear, 42 driving motor, 421 driving bevel gear, 5 flywheel. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] See also Figure 1-Figure 11 , and combined with the following embodiments, the various technical solutions involved in the present invention and the principles of coordinated operation in each technical solution are described in detail.

[0056] Example 1

[0057] The drilling and positioning tool for a flywheel of a marine diesel engine comprises a mounting base, an inner positioning component assembled in the mounting base, a driving component and an outer positioning component arranged outside the inner positioning component. The inner positioning component and the outer positioning component are arranged concentrically, and the driving component and the inner positioning component are dynamically connected.

[0058] The inner positioning assembly is used to position the inner ring of the flywheel 5 of the marine diesel engine and adjust the positioning height of the flywheel 5, and the driving assembly is used to drive the inner positioning assembly and the flywheel 5 to rotate around its own axis.

[0059] The external positioning assembly includes a positioning clamp seat 31, an upper positioning jaw 32, a lower positioning jaw 33, a radial positioning assembly, and an axial positioning assembly. The positioning clamp seat 31 includes multiple groups distributed in a ring array on the mounting base and running along the diameter direction of the mounting base. Each group of positioning clamp seats 31 is equipped with an upper positioning jaw 32 and a lower positioning jaw 33. The radial positioning assembly is linked to the positioning clamp seat 31, and the axial positioning assembly is linked to the upper positioning jaw 32 and the lower positioning jaw 33.

[0060] The setting of the mounting base can ensure the stable installation and operation of the inner positioning component, the driving component and the outer positioning component, so as to realize the accurate and stable positioning of the flywheel 5 of the marine diesel engine and ensure the stable drilling process of the flywheel 5.

[0061] At the same time, the mounting base can be stably assembled in a machining center, and the machining center can perform accurate and efficient drilling processing on the flywheel 5.

[0062] The inner positioning component can clamp and position the inner ring of the flywheel 5, and the inner ring of the flywheel 5 is used to assemble the crankshaft connected to the diesel engine. The inner positioning component can be driven by the driving component to operate, and then drive the clamped and positioned flywheel 5 to operate synchronously, so as to facilitate the detection of the dynamic balance state of the flywheel 5, or adjust the rotation angle of the flywheel 5, so as to ensure that the machining center can perform drilling operations on specific parts of the flywheel 5 without interference from the external positioning component.

[0063] In particular, when drilling the outer assembly hole for assembling the outer gear ring on the flywheel 5, the upper positioning jaw 32 and the lower positioning jaw 33 will cause obstruction to the position of the outer assembly hole during the clamping and positioning process. At this time, the outer positioning component can be controlled to be in an outward expansion and loosened posture, and the driving component can drive the inner positioning component and the clamped and positioned flywheel 5 to rotate a certain angle, so that the processing point of the outer assembly hole is misaligned with the outer positioning component, and then the outer positioning component acts on the flywheel 5 again and fixes it, and the outer assembly hole is drilled on the flywheel 5 by the machining center.

[0064] After the dynamic balancing test of the flywheel 5 is completed with the help of the driving assembly, balancing holes can be drilled at the outer edge of the flywheel 5 according to the dynamic balancing test result to ensure that the mass of the flywheel 5 is uniform at all locations during operation.

[0065] Since the flywheel 5 of the marine diesel engine is large in size and mass, when drilling the flywheel 5, the inner positioning component and the outer positioning component jointly clamp and position the flywheel 5, the inner positioning component applies an outward radial force to the inner ring of the flywheel 5, the positioning clamp seat 31 in the outer positioning component applies an inward radial force to the outer edge of the flywheel 5, and the upper positioning jaw 32 and the lower positioning jaw 33 respectively apply downward and upward axial forces to the flywheel 5, thereby jointly achieving accurate and stable clamping and positioning of the flywheel 5, thereby ensuring accurate drilling of the flywheel 5 by the machining center.

[0066] The drilled holes processed on the flywheel 5 include the inner assembly hole for fixing and connecting the diesel engine crankshaft (located near the outer periphery of the inner ring of the flywheel 5), the outer assembly hole for fixing the outer gear ring (located inside the outer edge of the flywheel 5), the ventilation hole for reducing weight and dissipating heat (located on the wheel surface of the flywheel 5), and the balancing hole for ensuring the dynamic balance of the flywheel 5 (located on the outer edge of the flywheel 5). Since the processing of the inner and outer assembly holes and the ventilation holes will affect the overall dynamic balance of the flywheel 5, the processing of the balancing hole is at the back of the other drilling processes.

[0067] Example 2

[0068] In order to ensure that the mounting base can be stably assembled in the processing equipment (machining center, CNC drilling machine), and to ensure that the inner positioning component, the drive component, and the outer positioning component can be stably assembled in the mounting base, the following technical solutions are provided.

[0069] The mounting base includes an assembly base 11 and an assembly cover shell 12. An upper flange 121 is fixedly connected to the bottom of the assembly cover shell 12. A lower flange 111 matched with the upper flange 121 is fixedly connected to the assembly base 11. The upper flange 121 and the lower flange 111 are fixedly connected by a bolt assembly 13. An assembly cavity 14 is opened in the assembly base 11 and the assembly cover shell 12.

[0070] Connecting through holes 112 are evenly arranged on the edge of the assembly base 11, so as to facilitate fixing the assembly base 11 to the processing equipment by bolts. The assembly cover shell 12 is fixed on the assembly base 11, and the assembly cavity 14 inside the two can ensure that the driving component and some parts of the inner positioning component and the outer positioning component can be stably assembled and operated therein.

[0071] An assembly groove 113 is opened on the lower surface of the assembly base 11, which is used to connect the upper flange 121 and the lower flange 111. The bottom end of the bolt assembly 13 is placed in the assembly groove 113 to avoid the bolt assembly 13 being exposed and affecting the installation base and the feeding mechanism in the processing equipment. Interference occurs.

[0072] Example 3

[0073] In order to ensure that the inner positioning disc can effectively position the inner ring of the flywheel 5 and that the inner positioning disc can carry the flywheel 5 and perform height adjustment, the following technical solution is provided.

[0074] A guide through hole 122 is opened at the axis center of the assembly cover shell 12, and the internal positioning component includes an assembly shaft 21, a carrier plate 22, and a chuck 23. The assembly shaft 21 is assembled in the guide through hole 122 in a relative rotation and sliding manner. The carrier plate 22 is fixedly connected to the top of the assembly shaft 21, and the chuck 23 is fixedly assembled at the axis center of the carrier plate 22. A plurality of groups of claws are evenly mounted on the chuck 23, and the claws are used to clamp the inner wall of the inner ring of the flywheel 5.

[0075] The provision of the guide through hole 122 can ensure that the assembly shaft 21 is stably assembled therein, and the assembly shaft 21 can realize rotation around its own axis or realize lifting and lowering motion along the axis of the guide through hole 122 under the limiting effect of the guide through hole 122 .

[0076] The supporting plate 22 can play the role of supporting the flywheel 5 to ensure that the flywheel 5 can be stably assembled on the supporting plate 22, and the inner ring of the flywheel 5 can be clamped and positioned by the chuck 23 that synchronously retracts and extends each group of claws, so that the flywheel 5 is driven by the assembly shaft 21, the supporting plate 22, and the chuck 23 to realize the movement around its own axis or the movement of lifting and lowering along its own axis.

[0077] The inner positioning assembly cooperates with the driving assembly and the outer positioning assembly to realize fast and accurate processing of the bore holes of the flywheel 5 .

[0078] In order to ensure that the inner positioning assembly can drive the flywheel 5 clamped and positioned thereon to adjust its height position without affecting the normal operation of the inner positioning assembly and the flywheel 5 around the axis, the following technical solution is provided.

[0079] The internal positioning component also includes an assembly disk 24 and a telescopic cylinder 25. Two groups of limit disks 211 are fixedly connected to the assembly shaft 21. The assembly disk 24 is rotatably installed on the periphery of the assembly shaft 21 and arranged between the two groups of limit disks 211. The telescopic cylinder 25 includes multiple groups arranged on the periphery of the assembly shaft 21 and arranged in the vertical direction. The fixed end of the telescopic cylinder 25 is fixedly connected to the assembly base 11, and the movable end of the telescopic cylinder 25 is fixedly connected to the assembly disk 24.

[0080] The setting of the limiting plate 211 can ensure that the assembly plate 24 rotates stably around the assembly shaft 21 and ensure that the assembly plate 24 and the assembly shaft 21 keep rising and falling synchronously.

[0081] In the process of controlling the synchronous extension and retraction of each group of telescopic cylinders 25, the assembly disk 24 can be driven to rise and fall stably in the vertical direction, thereby driving the assembly shaft 21, the carrying disk 22 and the flywheel 5 assembled on the carrying disk 22 and positioned by the chuck 23 to rise and fall synchronously.

[0082] Since the assembly disk 24 is rotationally connected to the assembly shaft 21, the lifting movement of the assembly disk 24 will not interfere with the state of the assembly shaft 21 rotating around itself, thereby ensuring that the flywheel 5 positioned on the inner positioning assembly maintains an independent rotation and lifting posture.

[0083] Example 4

[0084] In order to ensure that the drive assembly can be stably installed in the assembly cavity 14 in the mounting base, and to ensure that the drive assembly can drive the assembly shaft 21 to operate stably without affecting the free lifting of the assembly shaft 21, the following technical solution is provided.

[0085] The driving assembly includes a spline shaft A41 and a driving motor 42. The spline shaft A41 is rotatably installed at the axis center of the assembly base 11 and is arranged in the vertical direction. A spline groove A212 is opened at the axis center of the assembly shaft 21 to maintain sliding connection with the spline shaft A41. The driving motor 42 is fixedly installed on the assembly base 11, and a driving bevel gear 421 is fixedly connected to the output shaft of the driving motor 42. A transmission bevel gear 411 is fixedly connected to the spline shaft A41, and the transmission bevel gear 411 is meshed with the driving bevel gear 421.

[0086] The spline shaft A41 is slidably connected with the assembly shaft 21 having a spline groove A212 at the axis center, so that the power of the spline shaft A41 can always be transmitted to the assembly shaft 21 during the lifting and lowering process of the assembly shaft 21 driven by the telescopic cylinder 25 and the assembly plate 24.

[0087] When the driving motor 42 drives the driving bevel gear 421 to operate, it can drive the transmission bevel gear 411 and the spline shaft A41 to operate stably, and then transmit power to the assembly shaft 21 to drive the carrier plate 22, the chuck 23 and the flywheel 5 clamped and positioned by the chuck 23 to operate stably.

[0088] Example 5

[0089] In order to ensure that the radial positioning assembly can drive the positioning clamp 31 to stably retract and release along a straight line on the mounting base to achieve accurate positioning of the flywheel 5, the following technical solution is provided.

[0090] A plurality of radially arranged linear guide grooves 123 are evenly formed on the top of the assembly cover shell 12 . A connecting seat 311 is fixedly connected to the bottom of the positioning clamp seat 31 . The connecting seat 311 is slidably installed in the linear guide grooves 123 .

[0091] The radial positioning assembly includes a driving disk 341 and an adjusting motor A342. The driving disk 341 is rotatably installed in the assembly cavity 14. A plurality of arc guide grooves 3411 are evenly arranged on the driving disk 341. A guide column 312 is fixedly connected to the bottom of the connecting seat 311. The guide column 312 and the arc guide groove 3411 are matched and combined. The adjusting motor A342 is fixedly installed in the assembly cavity 14, and a bevel gear A3421 is fixedly connected to the output shaft of the adjusting motor A342. A bevel gear a3412 ​​meshing with the bevel gear A3421 is fixedly connected to the driving disk 341.

[0092] The arrangement of the linear guide groove 123 can limit the positioning clamp seat 31 to stably run along the diameter direction of the mounting base. During the synchronous operation of each group of positioning clamp seats 31, the outer edge of the flywheel 5 can be clamped or loosened.

[0093] When the adjusting motor A342 is running and drives the bevel gear A3421 to operate, it further drives the bevel gear a3412 ​​and the driving disk 341 to operate stably. The operating arc guide groove 3411 acts on the guide column 312, and cooperates with the limiting effect of the linear guide groove 123 to drive each group of positioning clamps 31 to be synchronously retracted and extended along the radial direction of the mounting base, so that the positioning clamps 31 can realize precise positioning of the outer edge of the flywheel 5.

[0094] A support frame 114 is also fixedly mounted on the assembly base 11 , and the adjustment motor A342 is fixedly mounted on the support frame 114 to ensure that the adjustment motor A342 is poweredly connected to the drive disk 341 .

[0095] In order to ensure that the drive disk 341 can be stably installed in the assembly cavity 14 and to ensure that the arrangement of the drive disk 341 and the bevel gear a3412 ​​and the internal positioning component at the axis do not interfere with spatial movement, the following technical solution is provided.

[0096] Two sets of limiting rings A124 are fixedly connected to the inner wall of the assembly cover shell 12, and the driving disk 341 is rotatably installed between the two sets of limiting rings A124. A clearance hole A3413 is opened at the axis center of the driving disk 341 and the bevel gear a3412. The assembly shaft 21, the assembly disk 24, and the telescopic cylinder 25 are all arranged on the inner side of the clearance hole A3413, and the driving motor 42, the driving bevel gear 421, and the transmission bevel gear 411 are all arranged below the driving disk 341 and the bevel gear a3412.

[0097] The setting of two sets of limit rings A124 can ensure that the driving disk 341 is stably assembled inside the assembly cover shell 12 and that the driving disk 341 operates stably. The setting of the clearance hole A3413 opened at the axis of the driving disk 341 and the bevel gear a3412 ​​can avoid spatial motion interference between the arrangement of the driving disk 341 and the bevel gear a3412 ​​and the assembly shaft 21, the assembly disk 24 and the telescopic cylinder 25 in the internal positioning component.

[0098] Since the driving motor 42, the transmission bevel gear 411 and the driving bevel gear 421 in the driving assembly are arranged below the driving disk 341 and the bevel gear a3412, there will be no spatial motion interference with the driving disk 341.

[0099] Example 6

[0100] In order to ensure that the upper positioning jaw 32 and the lower positioning jaw 33 can be stably assembled on the positioning clamp seat 31, and at the same time, the upper and lower surfaces of the outer edge of the flywheel 5 are clamped and positioned by the reverse operation of the upper and lower positioning jaws 32 and 33, the following technical solution is provided.

[0101] The upper and lower ends of the positioning clamp seat 31 are fixedly connected to the limit seats 313 , the upper positioning jaw 32 and the lower positioning jaw 33 are slidably mounted on the periphery of the positioning clamp seat 31 , and the upper positioning jaw 32 and the lower positioning jaw 33 are arranged between the two sets of limit seats 313 .

[0102] A vertically arranged threaded rod 314 is rotatably mounted on the limit seat 313. The threaded rod 314 is provided with two sections of thread grooves arranged in opposite spiral directions. The two sections of thread grooves are respectively screwed to the upper positioning jaw 32 and the lower positioning jaw 33. The threaded rod 314 maintains a dynamic connection with the axial positioning assembly.

[0103] In order to prevent the debris generated during the drilling process from entering the thread groove of the threaded rod 314 and affecting the normal operation of the threaded rod 314, a protective cover 317 is fixed to the outside of the positioning clamp 31, and the threaded rod 314 is arranged on the inside of the protective cover 317, which can effectively prevent the debris generated during the drilling process from entering the thread groove of the threaded rod 314.

[0104] When the threaded rod 314 on each positioning clamp seat 31 is driven by the axial positioning component to operate, the upper positioning jaw 32 and the lower positioning jaw 33 can be synchronously driven to maintain symmetrical movement. When the upper positioning jaw 32 and the lower positioning jaw 33 move relative to each other, the outer edge of the flywheel 5 between the two can be axially positioned.

[0105] When the flywheel 5 is axially positioned, the assembly disk 24 and the telescopic cylinder 25 in the inner positioning assembly are operated, and the telescopic cylinder 25 drives the flywheel 5 to a specific height position, so that the upper positioning jaw 32 and the lower positioning jaw 33 can clamp and position the upper and lower surfaces of the outer edge of the flywheel 5 at the same time.

[0106] In order to ensure that the axial positioning assembly can be stably installed in the assembly cavity 14 and that the axial positioning assembly can transmit power to the threaded rods 314 on each group of positioning clamp seats 31, the following technical solution is provided.

[0107] An installation sleeve 125 is fixedly connected to the inside of the assembly cover shell 12, an assembly groove 315 arranged in the assembly cavity 14 is opened on the connecting seat 311, a No. 1 bevel gear 3141 arranged in the assembly groove 315 is fixedly connected to the bottom end of the threaded rod 314, a horizontally arranged installation shaft 316 is rotatably installed in the assembly groove 315, and a No. 2 bevel gear 3161 that meshes with the No. 1 bevel gear 3141 is fixedly connected to the installation shaft 316.

[0108] The axial positioning assembly includes a bevel gear B351, an adjusting motor B352 and multiple groups of spline shafts B353 distributed in a circular array. The spline shaft B353 is rotatably installed between the side wall of the assembly cover shell 12 and the mounting sleeve 125 and is arranged radially along the assembly cover shell 12. A spline groove B3162 is provided on the mounting shaft 316 to maintain sliding connection with the spline shaft B353. The bevel gear B351 is rotatably installed on the inner side of the mounting sleeve 125. The inner end of the spline shaft B353 is fixedly connected to a bevel gear b3531 that is meshed with the bevel gear B351. The adjusting motor B352 is fixedly installed in the assembly cover shell 12, and the output shaft of the adjusting motor B352 is fixedly connected to the third bevel gear 3521, and the third bevel gear 3521 is meshed with the bevel gear B351.

[0109] The setting of the mounting sleeve 125 can ensure that the bevel gear B351 and the spline shaft B353 are stably installed in the assembly cavity 14. When the adjusting motor B352 drives the third bevel gear 3521 to operate, it can drive the bevel gear B351 to operate stably, and then drive each group of bevel gears b3531 and the spline shaft B353 fixedly connected to the bevel gear b3531 to operate stably. Since the spline shaft B353 maintains a sliding connection with the mounting shaft 316, the mounting shaft 316 and the second bevel gear 3161 thereon are driven to operate, and then the first bevel gear 3141 and the threaded rod 314 are driven to operate stably, so as to drive the upper positioning jaws 32 and the lower positioning jaws 33 on each group of positioning clamps 31 to operate in the opposite direction, thereby realizing the axial clamping or loosening operation of the flywheel 5.

[0110] Since the installation shaft 316 is always slidably connected with the spline shaft B353, during the radial positioning component driving the positioning clamp seat 31 and the upper positioning jaw 32 and the lower positioning jaw 33 assembled thereon to run radially synchronously, the power of the spline shaft B353 can always be transmitted to the threaded rod 314, and the threaded rod 314 drives the upper positioning jaw 32 and the lower positioning jaw 33 to move up and down along the axial direction to achieve the clamping positioning or loosening of the flywheel 5.

[0111] The mounting sleeve 125 , the bevel gear B351 , the adjusting motor B352 and the spline shaft B353 are all arranged above the driving disk 341 , so they will not interfere with the spatial movement of the running driving disk 341 .

[0112] In order to ensure that the bevel gear B351 can be stably assembled inside the mounting sleeve 125 and avoid spatial motion interference between the assembled mounting sleeve 125, bevel gear B351 and the assembly shaft 21, assembly disk 24 and telescopic cylinder 25 in the inner positioning assembly, the following technical solution is provided.

[0113] Two sets of limiting rings B1251 are fixedly connected to the inner wall of the mounting sleeve 125, and the bevel gear B351 is rotatably mounted between the two sets of limiting rings B1251. A clearance hole B3511 is opened at the axis of the bevel gear B351, and the assembly shaft 21, the assembly disk 24, and the telescopic cylinder 25 are all arranged on the inner side of the clearance hole B3511.

[0114] The setting of the limiting ring B1251 can ensure that the bevel gear B351 is stably installed in a relatively rotating manner inside the mounting sleeve 125. The adjusting motor B352 is arranged outside the mounting sleeve 125, and the third bevel gear 3521 assembled thereon is arranged inside the mounting sleeve 125 and meshes with the bevel gear B351. The mounting sleeve 125 is arranged outside the assembly shaft 21, the assembly disk 24 and the telescopic cylinder 25 to avoid spatial interference therewith, and the clearance through hole B3511 opened at the axis of the bevel gear B351 can also avoid spatial motion interference between the bevel gear B351 and the assembly shaft 21, the assembly disk 24 and the telescopic cylinder 25.

[0115] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0116] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Marine diesel engine flywheel drilling and positioning tool, characterized by: It comprises a mounting base, an inner positioning assembly assembled in the mounting base, a driving assembly, and an outer positioning assembly arranged outside the inner positioning assembly, wherein the inner positioning assembly and the outer positioning assembly are arranged concentrically, and the driving assembly and the inner positioning assembly are connected in power; The mounting base comprises an assembly base (11) and an assembly cover shell (12), wherein an assembly cavity (14) is provided in the assembly base (11) and the assembly cover shell (12); The inner positioning component is used to position the inner ring of the flywheel (5) of the marine diesel engine and adjust the positioning height of the flywheel (5), and the driving component is used to drive the inner positioning component and the flywheel (5) to rotate around their own axis; A guide through hole (122) is provided at the axis center of the assembly cover shell (12); the inner positioning assembly comprises an assembly shaft (21), a carrier plate (22), and a chuck (23); the assembly shaft (21) is assembled in the guide through hole (122) in a relatively rotating and sliding manner; the carrier plate (22) is fixedly connected to the top end of the assembly shaft (21); and the chuck (23) is fixedly assembled at the axis center of the carrier plate (22); The driving assembly comprises a spline shaft A (41) and a driving motor (42); the spline shaft A (41) is rotatably mounted at the axis center of the assembly base (11) and arranged in the vertical direction; a spline groove A (212) is provided at the axis center of the assembly shaft (21) and is slidably plugged with the spline shaft A (41); the driving motor (42) is fixedly mounted on the assembly base (11); a driving bevel gear (421) is fixedly connected to the output shaft of the driving motor (42); a transmission bevel gear (411) is fixedly connected to the spline shaft A (41); and the transmission bevel gear (411) is meshed with the driving bevel gear (421); The external positioning assembly comprises a positioning clamp seat (31), an upper positioning jaw (32), a lower positioning jaw (33), a radial positioning assembly, and an axial positioning assembly. The positioning clamp seat (31) comprises a plurality of groups distributed in an annular array on the mounting base and running along the diameter direction of the mounting base. Each group of the positioning clamp seats (31) is equipped with an upper positioning jaw (32) and a lower positioning jaw (33). The radial positioning assembly is linked to the positioning clamp seat (31), and the axial positioning assembly is linked to the upper positioning jaw (32) and the lower positioning jaw (33). The top of the assembly cover shell (12) is evenly provided with a plurality of groups of radially arranged linear guide grooves (123); the bottom of the positioning clamp seat (31) is fixedly connected with a connecting seat (311); the connecting seat (311) is slidably installed in the linear guide grooves (123); The radial positioning assembly comprises a driving disk (341) and an adjusting motor A (342); the driving disk (341) is rotatably mounted in the assembly cavity (14); a plurality of groups of arc guide grooves (3411) are evenly arranged on the driving disk (341); a guide column (312) is fixedly connected to the bottom of the connecting seat (311); the guide column (312) and the arc guide groove (3411) are in a matching combination; the adjusting motor A (342) is fixedly mounted in the assembly cavity (14); a bevel gear A (3421) is fixedly connected to the output shaft of the adjusting motor A (342); and a bevel gear a (3412) meshing with the bevel gear A (3421) is fixedly connected to the driving disk (341); Two groups of limiting rings A (124) are fixedly connected to the inner wall of the assembly cover shell (12); the driving disk (341) is rotatably mounted between the two groups of limiting rings A (124); a clearance through hole A (3413) is provided at the axis of the driving disk (341) and the bevel gear a (3412); the assembly shaft (21), the assembly disk (24), and the telescopic cylinder (25) are all arranged on the inner side of the clearance through hole A (3413); and the driving motor (42), the driving bevel gear (421), and the transmission bevel gear (411) are all arranged below the driving disk (341) and the bevel gear a (3412); The upper and lower ends of the positioning clamp seat (31) are fixedly connected to the limit seats (313), the upper positioning clamp jaw (32) and the lower positioning clamp jaw (33) are slidably mounted on the periphery of the positioning clamp seat (31), and the upper positioning clamp jaw (32) and the lower positioning clamp jaw (33) are arranged between the two groups of limit seats (313); A vertically arranged threaded rod (314) is rotatably mounted on the limit seat (313), and the threaded rod (314) is provided with two sections of thread grooves arranged in opposite spiral directions, and the two sections of thread grooves are respectively screwed to the upper positioning jaw (32) and the lower positioning jaw (33), and the threaded rod (314) is dynamically connected to the axial positioning assembly; The assembly cover shell (12) is fixedly connected to an installation sleeve (125) inside, the connection seat (311) is provided with an assembly groove (315) arranged in the assembly cavity (14), the bottom end of the threaded rod (314) is fixedly connected to a first bevel gear (3141) arranged in the assembly groove (315), a horizontally arranged installation shaft (316) is rotatably installed in the assembly groove (315), and a second bevel gear (3161) meshing with the first bevel gear (3141) is fixedly connected to the installation shaft (316); The axial positioning assembly comprises a bevel gear B (351), an adjustment motor B (352), and a plurality of groups of spline shafts B (353) distributed in an annular array. The spline shafts B (353) are rotatably mounted between the side wall of the assembly cover shell (12) and the mounting sleeve (125) and are arranged radially along the assembly cover shell (12). The mounting shaft (316) is provided with a spline groove B (3162) that is slidably connected to the spline shaft B (353). The bevel gear B ( The adjusting motor B (352) is fixedly mounted in the assembly cover shell (12), and a third bevel gear (3521) is fixedly mounted on the output shaft of the adjusting motor B (352), and the third bevel gear (3521) is meshed with the bevel gear B (351); Two sets of limiting rings B (1251) are fixedly connected to the inner wall of the installation sleeve (125); the bevel gear B (351) is rotatably installed between the two sets of limiting rings B (1251); a clearance through hole B (3511) is opened at the axis of the bevel gear B (351); the assembly shaft (21), the assembly disk (24), and the telescopic cylinder (25) are all arranged on the inner side of the clearance through hole B (3511).

2. The marine diesel engine flywheel drilling and positioning tool according to claim 1, characterized in that: An upper flange (121) is fixedly connected to the bottom of the assembly cover shell (12), a lower flange (111) matched with the upper flange (121) is fixedly connected to the assembly base (11), and the upper flange (121) and the lower flange (111) are fixedly connected via a bolt assembly (13).

3. The marine diesel engine flywheel drilling and positioning tool according to claim 2, characterized in that: The chuck (23) is evenly equipped with a plurality of groups of claws, and the claws are used to clamp the inner wall of the inner ring of the flywheel (5).

4. The marine diesel engine flywheel drilling and positioning tool according to claim 3, characterized in that: The inner positioning assembly further comprises an assembly disk (24) and a telescopic cylinder (25). Two groups of limit disks (211) are fixedly connected to the assembly shaft (21). The assembly disk (24) is rotatably mounted on the periphery of the assembly shaft (21) and arranged between the two groups of limit disks (211). The telescopic cylinder (25) comprises a plurality of groups arranged on the periphery of the assembly shaft (21) and arranged in a vertical direction. The fixed end of the telescopic cylinder (25) is fixedly connected to the assembly base (11), and the movable end of the telescopic cylinder (25) is fixedly connected to the assembly disk (24).

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