Portable ship flange hole milling device

Abstract

The utility model provides a portable ship flange hole milling device in the field of ships. Comprising a machine body, a transmission mechanism, a rotating mechanism and a feeding mechanism, the transmission mechanism is provided with a worm shaft assembled on the machine body, the outer end of the worm shaft is provided with a belt pulley connected with power, and a worm on the worm shaft transmits power; the cutting mechanism is provided with a cutter bar which is of a lead screw structure, the upper portion of the cutter bar is assembled on the machine body through a sleeve, and a worm gear is assembled in the middle of the sleeve and is perpendicular to and meshed with a worm of the worm shaft in a staggered mode. A cutter is assembled at the lower part of the cutter bar, is used for milling holes and is locked through a jackscrew; the feeding mechanism is provided with a nut seat, the nut seat comprises a nut and a boss, the nut seat is assembled on the top of the machine body through a lower baffle and an upper baffle, the cutter bar is in threaded connection with the nut, feeding of the cutter bar is achieved, and a cutter is driven to conduct hole milling operation; a manual feeding mechanism is arranged between the lower baffle and the upper baffle and used for driving the nut to be meshed with the cutter bar lead screw, and centering of a cutter in hole milling is carried out. The hole milling device is suitable for use.

Description

Technical Field

[0001] This utility model relates to the milling of bolt holes for rudder blades and rudder stock flanges in the field of shipbuilding, and particularly to a portable device for milling bolt holes in ship flanges. Background Technology

[0002] Currently, the rudder blade and rudder stock of ships are connected by flanges. Since the rudder blade and rudder stock flanges are processed separately, in order to ensure that the rudder blade and rudder stock flanges are correctly aligned and installed, the flange bolt holes need to be milled at the same time after the rudder blade and rudder stock are aligned.

[0003] However, in the process of implementing the inventive technical solution in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems:

[0004] Due to the large size and weight of the rudder blades and rudder stock, the small processing area, and the complex environment, it is difficult to use large tools to mill flange bolt holes.

[0005] Therefore, to address the above situation and based on the dimensions of the bolt holes in the rudder blade and rudder stock flanges, as well as the processing area, a portable marine flange milling device was designed. This device enables the milling of the bolt holes in the rudder blade and rudder stock flanges, meeting the requirements for connection and fixation between the rudder blade and rudder stock flanges. It simplifies the construction process, reduces construction difficulty, and improves work efficiency. Summary of the Invention

[0006] To address the shortcomings of existing technologies and the problem of insufficient space and complex conditions for flange milling in rudder blade and rudder stock flange bolt hole machining, this application provides a portable marine flange milling device. This device solves the technical problem of milling bolt holes in rudder blade and rudder stock flanges by using a transmission mechanism on the main body to provide rotational power to the cutting tool on the rotating mechanism and controlling the radial feed of the cutting tool through a feed mechanism.

[0007] The solution adopted by the embodiments of this application to solve the technical problem is:

[0008] A portable marine flange milling device includes a body, a transmission mechanism, a cutting mechanism, and a feed mechanism. The body is a box-shaped structure used to mount and fix the device near the rudder blade and rudder stock flange. The transmission mechanism has a worm shaft mounted on the body, with a pulley at the outer end of the worm shaft for power input, and the worm on the worm shaft transmits power. The cutting mechanism has a tool holder, which is a lead screw structure. The upper part is mounted on the body through a sleeve, and a worm wheel is mounted in the middle of the sleeve. The worm wheel and the worm on the worm shaft are intersected perpendicularly and mesh with each other. A cutting tool is mounted at the lower part of the tool holder for milling holes and is locked by a set screw. The feed mechanism has a lead screw nut, which includes a lead screw nut and a boss. The lead screw nut is mounted on the top of the body through a lower baffle and an upper baffle. The tool holder is screwed to the lead screw nut to realize the feed of the tool holder and drive the cutting tool to perform milling operations. A manual feed mechanism is set between the lower baffle and the upper baffle to drive the lead screw nut to mesh with the tool holder and lead screw for centering the cutting tool in the milling hole.

[0009] To further address the technical problems addressed in the embodiments of this application, the machine body provided in this application includes a limiting base on its side. The limiting base is a flange-type structure with bolt holes for fastening it to a mounting seat near the rudder blade and rudder stock flange. A transverse worm gear assembly hole is provided in the middle of the machine body for assembling a worm shaft. A longitudinal worm wheel assembly hole is provided on the outside of the machine body for assembling a tool holder. The worm wheel assembly hole and the worm gear assembly hole are perpendicularly intersecting each other. A groove is provided in the middle of the worm wheel assembly hole, with the upper part of the groove open for assembling the worm wheel onto the tool holder.

[0010] Furthermore, the transmission mechanism includes a pulley, a worm shaft, a cantilever seat, a single-row radial ball bearing, a cantilever seat cover, a single-row tapered rolling bearing, and a blind cover. The worm shaft has single-row tapered rolling bearings installed at both ends of the worm, which are assembled in the worm mounting hole of the machine body. One end of the worm shaft is sealed by the blind cover, and the other end extends out of the worm mounting hole. A cantilever seat is provided on the end face of the worm mounting hole. The cantilever seat has a cylindrical structure, with one end connected to the worm mounting hole and the other end housing a single-row radial ball bearing to support the worm shaft. The single-row radial ball bearing is sealed in the cantilever seat through the cantilever seat cover. A pulley is installed at the end of the worm shaft that passes through the cantilever seat cover, and the pulley is connected to a power source.

[0011] Furthermore, the cutting mechanism includes a tool holder, a cutting tool, a set screw, a worm gear, a sleeve, a copper sleeve, a lower end cap, and an upper end cap. The tool holder is a stepped shaft with a radial through groove at the bottom. A set screw is axially located at the bottom of the tool holder, extending into the through groove to lock and fix the cutting tool embedded in the through groove. The upper part of the tool holder is a lead screw, which is screwed to a nut at the top of the worm gear mounting hole mounted on the machine body. The sleeve is mounted on the lead screw of the tool holder by a key connection, and its upper end is mounted in the worm gear mounting hole through the upper end cap, and its lower end is mounted in the worm gear mounting hole through the lower end cap. A worm gear is mounted in the middle of the sleeve and is housed in a groove in the machine body. A copper sleeve is provided between the sleeve and the worm gear mounting hole cavity, wherein the copper sleeve is divided into upper and lower sections by the worm gear.

[0012] Furthermore, the feed mechanism includes a lower baffle, an upper baffle, a lead screw nut seat, a bolt assembly, a spacer sleeve, and a manual feed mechanism; the lead screw nut seat includes a lead screw nut and a boss, with a threaded connection between the lead screw nut and the tool holder in the middle of the lead screw nut seat; a boss is provided at the lower part of the lead screw nut seat for installation and fixing; the lower baffle is an annular pad, with a limiting hole in the middle of the lower baffle, and four bolt holes distributed around the limiting hole for fitting it onto the outer contour of the top of the worm gear mounting hole; three threaded holes are also distributed around the limiting hole, with the threaded holes and bolt holes located on outer circles of different diameters and spaced apart, and the threaded holes are used for bolt assembly connection; outside the limiting hole... A lower rotating shaft hole is provided for assembling a manual feed mechanism; the upper baffle is a triangular pad with a nut limiting hole in the middle, which fits onto the nut and presses the boss tight; three through holes corresponding to the threaded holes are distributed around the nut limiting hole for connecting bolt assemblies; an upper rotating shaft hole corresponding to the lower rotating shaft hole is provided outside the nut limiting hole for assembling a manual feed mechanism; one end of the bolt assembly passes through the through hole of the upper baffle, and the other end is threaded into the threaded hole of the lower baffle, connecting and fixing the upper and lower baffles; a spacer sleeve is fitted on the bolt assembly to separate the upper and lower baffles.

[0013] Positive effects:

[0014] The technical solutions provided in this application embodiment have at least the following technical effects or advantages:

[0015] 1. Because the embodiments of this application adopt the technical means of setting a transmission mechanism, a cutting mechanism and a feeding mechanism on the machine body, the feeding mechanism is set on the upper part of the cutting mechanism, and the cutting mechanism and the transmission mechanism are intersected and perpendicular, which effectively solves the technical problem of the transmission mechanism, cutting mechanism and feeding mechanism converging on the machine body in the prior art, and thus realizes the technical effect of the device being transported along with the machine body and easy to carry.

[0016] 2. Since the embodiments of this application adopt the technical means of having a pulley on the transmission mechanism set on the machine body, the technical problem of the external power source being able to be quickly connected to the transmission mechanism in the prior art is effectively solved, thereby realizing the technical effect of the milling device being movable on the work site and facilitating construction operations.

[0017] 3. Since the embodiment of this application adopts the technical means of setting a limiting base on the side of the body 1, it effectively solves the technical problem of locking and fixing the body near the rudder blade and rudder stock flange in the prior art, thereby realizing the technical effect of milling operation and improving work efficiency.

[0018] 4. Because the embodiments of this application adopt the technical means of the tapered sleeve with a tapered angle that is larger at the bottom and smaller at the top, when the tool holder and the sleeve are assembled in the worm gear assembly hole, the tapered structure of the sleeve can offset part of the axial force generated by the tool milling the hole, effectively solving the technical problem of tool stability in the prior art, and thus achieving the technical effect of smooth tool operation and safe and reliable operation.

[0019] 5. Because the embodiments of this application adopt the technical means of setting a manual feed mechanism between the upper baffle and the lower baffle, the upper part of the manual rotating shaft equipped with the manual drive gear is provided with a hexagon; the manual drive gear meshes with the manual driven gear, the manual driven gear is equipped with a screw nut, and the screw nut is threadedly connected to the lead screw of the tool bar, which effectively solves the technical problem of tool alignment in the prior art. Using a wrench to drive the manual rotating shaft to rotate, the manual drive gear meshes with the manual driven gear, and the manual driven gear drives the screw nut to rotate, which can transmit the rotation and lifting of the tool on the tool bar to complete the alignment of the milling hole, thereby achieving the technical effect of tool alignment.

[0020] Suitable for use as a portable marine flange milling device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is the AA main view of this embodiment;

[0023] Figure 2 This is a top view of BB in this embodiment;

[0024] Figure 3 This is a CC side view of this embodiment;

[0025] Figure 4 This is the front view of the machine body;

[0026] Figure 5 This is a side view of the aircraft.

[0027] Figure 6 This is a top view of the top cover;

[0028] Figure 7 This is a top view of the lower end cap;

[0029] Figure 8 This is the front view of the gear shaft;

[0030] Figure 9 This is a partial sectional front view of the casing;

[0031] Figure 10 This is a full sectional front view of the copper bushing;

[0032] Figure 11 This is a half-section front view of the nut.

[0033] In the picture:

[0034] 1. Organism,

[0035] 11. Limiting base,

[0036] 12. Worm gear assembly hole,

[0037] 13. Worm gear mounting hole,

[0038] 14. Groove;

[0039] 2. Transmission mechanism,

[0040] 21. Pulley,

[0041] 22. Worm shaft,

[0042] 23. Cantilever seat,

[0043] 24. Single-row radial ball bearing,

[0044] 25. Cantilevered seat with transparent cover.

[0045] 26. Single-row tapered rolling bearing,

[0046] 27. Cover with a lid.

[0047] 3. Cutting mechanism,

[0048] 31. Tool holder,

[0049] 32. Knives,

[0050] 33. Top screw,

[0051] 34. Worm gear

[0052] 35. Sleeve,

[0053] 351. Conical sleeve,

[0054] 352. Lead screw hole,

[0055] 36. Copper sleeve,

[0056] 361. Conical cylinder

[0057] 362. Casing hole,

[0058] 363. Lubrication groove,

[0059] 37. Lower end cap,

[0060] 38. Top cover;

[0061] 4. Feed mechanism,

[0062] 41. Lower baffle,

[0063] 411. Limiting hole,

[0064] 412. Threaded hole,

[0065] 413. Lower rotating shaft hole; 414. Bolt hole.

[0066] 42. Upper baffle,

[0067] 421. Nut limiting hole; 422. Through hole.

[0068] 423. Upper rotating shaft hole,

[0069] 43. Silk Mother Seat

[0070] 431. Mother silk,

[0071] 432. Boss,

[0072] 44. Bolt assembly,

[0073] 45. Spacer sleeve,

[0074] 46. ​​Manual driven gear,

[0075] 47. Manually rotate the shaft.

[0076] 471. Wheel and axle

[0077] 472. Hexagonal,

[0078] 473. Upper shoulder,

[0079] 474. Lower shoulder,

[0080] 48. Manual drive gear. Detailed Implementation

[0081] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0082] According to the attached Figures 1-11 As shown, the portable marine flange milling device includes a body 1, a transmission mechanism 2, a cutting mechanism 3, and a feed mechanism 4;

[0083] The main body 1 is a box structure, used to install and fix the device near the rudder blade and rudder stock flange;

[0084] The transmission mechanism 2 has a worm shaft 22 mounted on the machine body 1, and a pulley 21 is provided at the outer end of the worm shaft 22 to connect to the power, and the worm on the worm shaft 22 transmits the power.

[0085] The cutting mechanism 3 has a tool holder 31, which is a lead screw structure. The upper part is mounted on the machine body 1 through a sleeve 35. A worm wheel 34 is mounted in the middle of the sleeve 35. The worm wheel 34 is perpendicular to and meshes with the worm shaft 22. A cutting tool 32 is mounted at the lower part of the tool holder 31 for milling holes and is locked by a set screw 33.

[0086] The feed mechanism 4 has a lead screw seat 43, which includes a lead screw 431 and a boss 432. The lead screw seat 43 is assembled on the top of the machine body 1 through a lower baffle 41 and an upper baffle 42. The tool bar 31 is screwed to the lead screw 431 to realize the feed of the tool bar 31 and drive the tool 32 to perform milling operations. A manual feed mechanism is provided between the lower baffle 41 and the upper baffle 42 to drive the lead screw of the lead screw 431 to mesh with the lead screw of the tool bar 31 to center the tool 32 in the milling operation.

[0087] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0088] Since the transmission mechanism 2, the cutting mechanism 3 and the feeding mechanism 4 are set on the body 1, and the feeding mechanism 4 is set on the upper part of the cutting mechanism 3, and the cutting mechanism 3 and the transmission mechanism 2 are intersected and perpendicular, the transmission mechanism 2, the cutting mechanism 3 and the feeding mechanism 4 are gathered on the body 1, and can be transported along with the body 1, making it easy to carry.

[0089] Since the transmission mechanism 2 on the machine body 1 has a pulley 21, the external power source can be quickly connected to the transmission mechanism 2, which makes it easy for the milling device to move on the work site and facilitates construction operations.

[0090] To ensure the stability of the structure in this embodiment, please refer to the appendix. Figure 2 , 4 5. A limiting base 11 is provided on the side of the body 1. The limiting base 11 is a flange-type structure with bolt holes for fastening it to the mounting seat near the rudder blade and rudder stock flange. A horizontal worm gear assembly hole 12 is provided in the middle of the body 1 for assembling the worm shaft 22. A vertical worm wheel assembly hole 13 is provided on the outside of the body 1 for assembling the tool holder 31. The worm wheel assembly hole 13 and the worm gear assembly hole 12 are perpendicular to each other. A groove 14 is provided in the middle of the worm wheel assembly hole 13. The upper part of the groove 14 is open for assembling the worm wheel 34 on the tool holder 31, thereby realizing the transmission of meshing power between the worm on the worm shaft 22 and the worm wheel 34.

[0091] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0092] Because the fuselage 1 is equipped with a limiting base 11 on its side, the fuselage 1 can be locked and fixed near the rudder blade and rudder stock flange for milling operations, thus improving work efficiency.

[0093] To further ensure the stability of the structure in this embodiment, please refer to the appendix. Figure 2 The transmission mechanism 2 includes a pulley 21, a worm shaft 22, a cantilever seat 23, a single-row radial ball bearing 24, a cantilever seat cover 25, a single-row tapered rolling bearing 26, and a blind cover 27.

[0094] The worm shaft 22 has single-row tapered rolling bearings 26 installed at both ends of the worm, which are assembled in the worm mounting hole 12 of the machine body 1. One end of the worm shaft 22 is sealed by a cover 27, and the other end of the worm shaft 22 extends out of the worm mounting hole 12. A cantilever seat 23 is provided on the end face of the worm mounting hole 12. The cantilever seat 23 has a cylindrical structure. One end is connected to the worm mounting hole 12, and the other end is equipped with a single-row radial ball bearing 24 to support the worm shaft 22. The single-row radial ball bearing 24 is sealed in the cantilever seat 23 through a cantilever seat cover 25. A pulley 21 is installed at the end of the worm shaft 22 that passes through the cantilever seat cover 25. The pulley 21 is connected to a power source, which drives the worm shaft 22 to rotate, thereby realizing the rotation of the worm of the worm shaft 22.

[0095] To optimize the structure of this embodiment, please refer to the appendix. Figure 3 , 9 10. The cutting mechanism 3 includes a tool holder 31, a cutting tool 32, a set screw 33, a worm gear 34, a sleeve 35, a copper sleeve 36, a lower end cover 37, and an upper end cover 38.

[0096] The tool holder 31 is a stepped shaft with a radial through groove at the bottom. A set screw 33 is axially provided at the bottom of the tool holder 31, extending into the through groove to lock and fix the tool 32 embedded in the through groove. The upper part of the tool holder 31 is a lead screw, which is screwed to the nut 431 at the top of the worm gear mounting hole 13 of the machine body 1. The sleeve 35 is mounted on the lead screw of the tool holder 31 by a key connection, and its upper end is mounted in the worm gear mounting hole 13 through the upper end cover 38 and the lower end through the lower end cover 37. The worm gear 34 is mounted in the middle of the sleeve 35 and is received in the groove 14 of the machine body 1. A copper sleeve 36 is provided between the sleeve 35 and the cavity of the worm gear mounting hole 13 to reduce the wear of the sleeve 35. The copper sleeve 36 is divided into upper and lower sections by the worm gear 34.

[0097] Preferably, the sleeve 35 is a cylindrical structure with an inner straight and an outer tapered shape. The inner cavity of the sleeve 35 is a lead screw hole 352 that is assembled with the lead screw of the tool holder 31. The outer contour of the sleeve 35 is a tapered sleeve 351 with a tapered angle that is larger at the bottom and smaller at the top. This allows the tool holder 31 to offset part of the axial force generated by milling, and the tool 32 to run smoothly.

[0098] Preferably, the copper sleeve 36 is a cylindrical structure with an inner cone and an outer straight shape, including a cone cylinder 361 and a sleeve hole 362. The cone cylinder 361 is assembled on the inner cavity of the worm gear assembly hole 13. The sleeve hole 362 is a tapered tube with a larger bottom and a smaller top, which is correspondingly matched with the cone sleeve 351. A lubrication groove 363 is provided on the inner wall of the sleeve hole 362 for lubrication and sealing.

[0099] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0100] Because the tapered sleeve 351 of the sleeve 35 has a tapered angle with a larger lower part and a smaller upper part, when the tool holder 31 and the sleeve 35 are assembled in the worm gear assembly hole 13, the tapered structure of the sleeve 35 can offset part of the axial force generated by the tool 32 milling the hole, so that the tool 32 runs smoothly and safely.

[0101] To further optimize the structure of this embodiment, please refer to the appendix. Figure 3 , 6 7, 11, The feed mechanism 4 includes a lower baffle 41, an upper baffle 42, a nut seat 43, a bolt assembly 44, a spacer sleeve 45 and a manual feed mechanism;

[0102] The threaded nut seat 43 includes a threaded nut 431 and a boss 432. The threaded nut 431 is provided in the middle of the threaded nut seat 43 and is threaded to the lead screw of the tool bar 31. The boss 432 is provided at the lower part of the threaded nut seat 43 for the installation and fixing of the threaded nut seat 43.

[0103] The lower baffle 41 is a circular pad. A limiting hole 411 is provided in the middle of the lower baffle 41. Four bolt holes 414 are distributed around the limiting hole 411 for fitting onto the outer contour of the top of the worm gear assembly hole 13. Three threaded holes 412 are also distributed around the limiting hole 411. The threaded holes 412 and the bolt holes 414 are located on outer circles of different diameters and are spaced apart from each other. The threaded holes 412 are used for connecting the bolt assembly 44. A lower rotating shaft hole 413 is provided outside the limiting hole 411 for assembling the manual feed mechanism.

[0104] The upper baffle 42 is a triangular pad. A nut limiting hole 421 is provided in the middle of the upper baffle 42. The nut limiting hole 421 is fitted onto the nut 431 and presses the boss 432 tightly. Three through holes 422 corresponding to the threaded holes 412 are distributed around the nut limiting hole 421 for connecting the bolt assembly 44. An upper rotating shaft hole 423 corresponding to the lower rotating shaft hole 413 is provided outside the nut limiting hole 421 for assembling the manual feed mechanism.

[0105] One end of the bolt assembly 44 passes through the through hole 422 of the upper baffle 42, and the other end is threaded to the threaded hole 412 of the lower baffle 41, thereby connecting and fixing the upper baffle 42 and the lower baffle 41. A spacer sleeve 45 is fitted on the bolt assembly 44 to separate the upper baffle 42 and the lower baffle 41, which is used to support the upper baffle 42 and the lower baffle 41 and prevent deformation.

[0106] To further optimize the structure of this embodiment, see Appendix Figure 1 , 8 The manual feed mechanism includes a manual driven gear 46, a manual rotating shaft 47, and a manual driving gear 48;

[0107] The manual driven gear 46 is an external gear, and the nut seat 43 is assembled in the inner cavity of the manual driven gear 46. The two sit together on the upper part of the upper end cover 38.

[0108] The manual rotating shaft 47 is a stepped shaft, including a wheel axle 471, a hexagonal 472, an upper shoulder 473, and a lower shoulder 474. A wheel axle 471 is mounted on the manual rotating shaft 47, and the wheel axle 471 is fitted with a manual drive gear 48 that meshes with a manual driven gear 46. The lower part of the wheel axle 471 has a lower shoulder 474 for assembly with the lower rotating shaft hole 413 of the lower baffle 41. The upper part of the wheel axle 471 has an upper shoulder 473 for assembly with the upper rotating shaft hole 423 of the upper baffle 42. The manual drive gear 48 is assembled between the upper baffle 42 and the lower baffle 41; the manual rotating shaft 47 extends upward through the upper rotating shaft hole 423 and is provided with a hexagon 472 for rotating the manual rotating shaft 47 with a wrench tool, thereby rotating the manual rotating shaft 47. The manual drive gear 48 and the manual driven gear 46 mesh with each other for transmission. The manual driven gear 46 drives the screw nut 431 to rotate, thereby the screw nut 431 drives the screw of the tool bar 31 to rotate and rise, and the tool 32 can perform milling hole centering adjustment.

[0109] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0110] Because a manual feed mechanism is provided between the upper baffle 42 and the lower baffle 41, the upper part of the manual rotating shaft 47 equipped with the manual drive gear 48 is provided with a hexagon 472; the manual drive gear 48 meshes with the manual driven gear 46, and the manual driven gear 46 is equipped with a screw nut 431, which is threadedly connected to the lead screw of the tool bar 31. Therefore, by using a wrench to drive the manual rotating shaft 47 to rotate, the manual drive gear 48 meshes with the manual driven gear 46, and the manual driven gear 46 drives the screw nut 431 to rotate, which can drive the tool 32 on the tool bar 31 to rotate and rise, and complete the centering of the milling hole of the tool 32.

[0111] As a conventional technical choice, in this embodiment, the outer circle of the tool holder 31 has a through keyway, and a part of the outer circle is machined into a square thread screw. The nut 431 is machined according to its thread, and the axial clearance is less than 0.08mm. The grinding clearance between the outer circle of the tool holder 31 and the sleeve 35 is between 0.035 and 0.045mm. The copper sleeve 36 is pressed into the machine body 1 with an interference fit of 0.01 to 0.02mm.

[0112] It is worth noting that all contents not described in detail in the specification are existing technologies known to those skilled in the art. Furthermore, the model parameters of the pulley 21, single-row radial ball bearing 24, single-row tapered rolling bearing 26, worm gear 34, screw nut 431, manual driven gear 46, and manual driving gear 48 are not specifically limited and can be determined using conventional equipment. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described further here.

[0113] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable marine flange milling device, characterized in that: include: The body (1) is a box structure used to install and fix the device near the rudder blade and rudder stock flange; The transmission mechanism (2) has a worm shaft (22) mounted on the machine body (1), and a pulley (21) is provided at the outer end of the worm shaft (22) to connect to the power, and the worm on the worm shaft (22) transmits the power; A cutting mechanism (3) is provided, comprising a tool holder (31) which is a lead screw structure. The upper part of the tool holder (31) is mounted on the machine body (1) via a sleeve (35). A worm gear (34) is mounted in the middle of the sleeve (35). The worm gear (34) is perpendicular to and meshes with the worm shaft (22). A cutting tool (32) is mounted at the lower part of the tool holder (31) for milling holes and is locked by a set screw (33). The feeding mechanism (4) has a lead screw seat (43), which includes a lead screw (431) and a boss (432). The lead screw seat (43) is assembled on the top of the machine body (1) through a lower baffle (41) and an upper baffle (42). The tool bar (31) is screwed to the lead screw (431) to realize the feeding of the tool bar (31) and drive the tool (32) to perform milling operations. A manual feeding mechanism is provided between the lower baffle (41) and the upper baffle (42) to drive the lead screw of the lead screw (431) to mesh with each other and to center the tool (32) in the milling operation.

2. The portable marine flange milling device according to claim 1, characterized in that: The body (1) is provided with a limiting base (11) on its side. The limiting base (11) is a flange-type structure with bolt holes for fastening it to the mounting seat near the rudder blade and rudder stock flange. A horizontal worm gear assembly hole (12) is provided in the middle of the body (1) for assembling the worm shaft (22). A vertical worm wheel assembly hole (13) is provided on the outside of the body (1) for assembling the tool holder (31). The worm wheel assembly hole (13) and the worm gear assembly hole (12) are perpendicular to each other. A groove (14) is provided in the middle of the worm wheel assembly hole (13). The upper part of the groove (14) is open for assembling the worm wheel (34) on the tool holder (31).

3. The portable marine flange milling device according to claim 2, characterized in that: The transmission mechanism (2) includes the pulley (21), the worm shaft (22), the cantilever seat (23), the single-row radial ball bearing (24), the cantilever seat cover (25), the single-row tapered rolling bearing (26), and the end cap (27); The worm shaft (22) has single-row tapered rolling bearings (26) installed at both ends of the worm, which are assembled in the worm mounting hole (12) of the machine body (1). One end of the worm shaft (22) is sealed by the end cap (27), and the other end of the worm shaft (22) extends out of the worm mounting hole (12). The end face of the worm mounting hole (12) is provided with the cantilever seat (23). The cantilever seat (23) is a cylindrical structure. One end is connected to the worm mounting hole (12), and the other end is equipped with the single-row radial ball bearing (24) to support the worm shaft (22). The single-row radial ball bearing (24) is sealed in the cantilever seat (23) through the cantilever seat cover (25). The end of the worm shaft (22) that passes through the cantilever seat cover (25) is equipped with the pulley (21), which is connected to the power source.

4. The portable marine flange milling device according to claim 3, characterized in that: The cutting mechanism (3) includes the tool holder (31), the cutting tool (32), the set screw (33), the worm gear (34), the sleeve (35), the copper sleeve (36), the lower end cover (37), and the upper end cover (38); The tool holder (31) is a stepped shaft with a radial through groove at the bottom. The tool holder (31) has an axially arranged set screw (33) at its bottom, which extends into the through groove to lock and fix the tool (32) embedded in the through groove. The upper part of the tool holder (31) is a lead screw, which is screwed to the nut (431) at the top of the worm gear mounting hole (13) of the machine body (1). The sleeve (35) is assembled to the tool holder (31) by a key connection. The lead screw is mounted on the worm gear assembly hole (13) with the upper end through the upper end cover (38) and the lower end through the lower end cover (37); the worm gear (34) is mounted in the middle of the sleeve (35) and is received in the groove (14) of the machine body (1); the copper sleeve (36) is provided between the sleeve (35) and the cavity of the worm gear assembly hole (13), wherein the copper sleeve (36) is divided into upper and lower sections by the worm gear (34).

5. The portable marine flange milling device according to claim 4, characterized in that: The sleeve (35) is a cylindrical structure with an inner straight and an outer tapered shape. The inner cavity of the sleeve (35) is a lead screw hole (352) which is assembled with the lead screw of the tool bar (31). The outer contour of the sleeve (35) is a tapered sleeve (351), which has a tapered angle with a larger bottom and a smaller top.

6. The portable marine flange milling device according to claim 5, characterized in that: The copper sleeve (36) is a cylindrical structure with an inner cone and an outer straight shape, including a cone (361) and a sleeve hole (362). The cone (361) is assembled on the inner cavity of the worm gear assembly hole (13). The sleeve hole (362) is a tapered tube with a larger bottom and a smaller top, which is correspondingly matched with the cone sleeve (351). A lubrication groove (363) is provided on the inner wall of the sleeve hole (362).

7. The portable marine flange milling device according to claim 6, characterized in that: The feeding mechanism (4) includes the lower baffle (41), the upper baffle (42), the nut seat (43), the bolt assembly (44), the spacer sleeve (45), and the manual feeding mechanism; The nut seat (43) includes a nut (431) and a boss (432). The nut (431) is connected to the screw thread of the tool bar (31) in the middle of the nut seat (43). The boss (432) is provided at the lower part of the nut seat (43) for the installation and fixing of the nut seat (43). The lower baffle (41) is an annular pad. A limiting hole (411) is provided in the middle of the lower baffle (41). Four bolt holes (414) are distributed around the limiting hole (411) for fitting onto the outer contour of the top of the worm gear assembly hole (13). Three threaded holes (412) are also distributed around the limiting hole (411). The threaded holes (412) and the bolt holes (414) are located on outer circles of different diameters and are spaced apart from each other. The threaded holes (412) are used for connecting the bolt assembly (44). A lower rotating shaft hole (413) is provided outside the limiting hole (411) for assembling a manual feed mechanism. The upper baffle (42) is a triangular pad. A nut limiting hole (421) is provided in the middle of the upper baffle (42). The nut limiting hole (421) is fitted on the nut (431) and presses the boss (432) tightly. Three through holes (422) corresponding to the threaded hole (412) are distributed around the nut limiting hole (421) for connecting the bolt assembly (44). An upper rotating shaft hole (423) corresponding to the lower rotating shaft hole (413) is provided outside the nut limiting hole (421) for assembling a manual feed mechanism. One end of the bolt assembly (44) passes through the through hole (422) of the upper baffle (42), and the other end is threadedly connected to the threaded hole (412) of the lower baffle (41), thereby connecting and fixing the upper baffle (42) and the lower baffle (41); a spacer sleeve (45) is fitted on the bolt assembly (44) to separate the upper baffle (42) and the lower baffle (41).

8. The portable marine flange milling device according to claim 7, characterized in that: The manual feed mechanism includes a manual driven gear (46), a manual rotating shaft (47), and a manual driving gear (48); The manual driven gear (46) is an external gear, and the nut seat (43) is assembled in the inner cavity of the manual driven gear (46). Both of them sit together on the upper part of the upper end cover (38). The manual rotating shaft (47) is a stepped shaft, including a wheel axle (471), a hexagonal shaft (472), an upper shoulder (473), and a lower shoulder (474). The wheel axle (471) is mounted on the manual rotating shaft (47), and the wheel axle (471) is fitted with the manual drive gear (48) and the manual driven gear (46). The lower part of the wheel axle (471) has the lower shoulder (474) for assembly with the lower rotating shaft hole (413) of the lower baffle (41). The upper part of the wheel axle (471) has the upper shoulder (473) for assembly with the upper rotating shaft hole (413) of the upper baffle (42). 423) are assembled together, and the manual drive gear (48) is assembled between the upper baffle (42) and the lower baffle (41); the manual rotating shaft (47) extends upward through the upper rotating shaft hole (423) and is provided with the hexagon (472) for rotating the manual rotating shaft (47) with a wrench tool; the manual drive gear (48) and the manual driven gear (46) mesh with each other for transmission; the manual driven gear (46) drives the screw nut (431) to rotate; the screw nut (431) drives the screw of the tool bar (31) to rotate and rise; the tool (32) can perform milling hole centering adjustment.

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