Plane threaded hole machining device applied to ring type stepped plane flange

Abstract

The utility model provides a plane threaded hole machining device applied to a ring type stepped plane flange. Comprising a servo feeding driving mechanism, a rotary supporting arm assembly, a numerical control system and a cross-shaped positioning assembly. A servo motor and a double-gear precision speed reducer are assembled on the fixed block; a screw tap quick-change chuck and a screw tap are assembled at the output end of the double-gear precision speed reducer; the rotary supporting arm assembly is a linkage connecting rod mechanism provided with a rotary arm and a supporting arm, one end of the supporting arm is connected with the servo feeding driving mechanism, the position of the servo feeding driving mechanism is adjusted through the rotary supporting arm assembly, and alignment with the threaded hole is achieved. A lifting mechanism is arranged on the upper portion of the cross-shaped positioning assembly, and the rotary arm is assembled on the lifting mechanism and ascends and descends along with the lifting mechanism. A supporting column assembly and a limiting assembly are arranged on the lower portion of the cross-shaped positioning assembly, and the plane threaded hole machining device is positioned on the ring type step plane flange. The rotary supporting arm assembly pulls the screw tap to move in space, and the servo feeding driving mechanism controls the screw tap to rotate through a numerical control system to achieve cutting.

Description

Technical Field

[0001] The utility model relates to the processing of flange threaded holes in the field of ships, and particularly to a device for processing plane threaded holes of a ring-type stepped plane flange. Background Technique

[0002] During the shipbuilding process, when processing the threads of some threaded holes of ring-type stepped plane flanges, due to limited space, large threaded processing equipment cannot enter and be fixed, and manual processing is adopted. It is extremely easy to cause the tap to break and remain in the blind hole and is not easy to remove. It is very difficult to ensure the perpendicularity of the thread axis and the effective thread depth. Especially for the processing of large-size coarse-thread blind holes, it is time-consuming and laborious, and the construction efficiency is not high. Summary of the Invention

[0003] In order to solve the deficiencies existing in the prior art and aiming at the problem of the perpendicularity of the thread axis during the processing of threaded holes of ring-type stepped plane flanges, the utility model provides a device for processing plane threaded holes of a ring-type stepped plane flange. The plane threaded hole processing device is positioned by a cross positioning component and controls the spatial movement of a servo feed driving mechanism in combination with a slewing support arm component to solve the technical problems of processing threaded holes of ring-type stepped plane flanges.

[0004] The solution adopted by the utility model to solve the technical problems is as follows:

[0005] A device for processing plane threaded holes of a ring-type stepped plane flange includes a servo feed driving mechanism, a slewing support arm component, a numerical control system, and a cross positioning component;

[0006] The servo feed driving mechanism includes a servo motor, a fixed block, a two-stage precision reducer, a tap quick-change chuck, and a tap; the fixed block is an installation seat, a servo motor is assembled on the fixed block, and the output end of the servo motor is assembled with a two-stage precision reducer; the output end of the two-stage precision reducer is assembled with a tap quick-change chuck, and a tap is assembled on the tap quick-change chuck to process threaded holes;

[0007] The slewing support arm component is a linkage connecting rod mechanism with a slewing arm and a support arm. One end of the support arm is connected to the servo feed driving mechanism, and the position of the servo feed driving mechanism 1 is adjusted through the slewing support arm component to achieve centering and alignment with the threaded hole;

[0008] The upper part of the cross positioning component is provided with a lifting mechanism, and the slewing arm is assembled thereon and rises and falls therewith; the lower part of the cross positioning component is provided with a support column component and a limiting component for positioning the plane threaded hole processing device on the ring-type stepped plane flange. Among them, the support column component is embedded in the inner cavity of the ring-type stepped plane flange for radial positioning, and the limiting component is located on the end face of the ring-type stepped plane flange for axial positioning;

[0009] Among them, the cross positioning component positions the plane thread hole machining device on the ring-type stepped plane flange. The rotary support arm component is used to realize the spatial movement of the tap on the servo feed drive mechanism. The tap is driven to rotate by the servo feed drive mechanism to perform cutting. At the same time, under the control of the numerical control system, the thread hole machining of the ring-type stepped plane flange is completed.

[0010] In order to further solve the technical problems to be solved by the present utility model, in the cross positioning component provided by the present utility model, the cross positioning component includes a central mounting plate, a support flange, a main shaft, a lead screw, a lifting mechanism, a fixed baffle, a support column component and a limit component;

[0011] The central mounting plate is a rectangular plate for supporting the cross positioning component; the support column component is arrayed on the end face of the central mounting plate and is used to support in the inner cavity of the ring-type stepped plane flange, and can radially position the cross positioning component; the limit component is arrayed on the upper surface of the central mounting plate and is staggered with the support column component, and is used to seat the cross positioning component on the end face of the ring-type stepped plane flange and axially position it; the support flange is located at the center of the central mounting plate, and its lower part is connected to the central mounting plate; the main shaft is a guide post and is vertically and rotatably connected to the support flange; the fixed baffle is sleeved at the bottom of the main shaft and is adjacent to the support flange; two mounting holes are provided on the fixed baffle, and one of the mounting holes is used for assembling the movable connection of the main shaft; the lead screw is arranged in parallel with the main shaft, and the lower part is assembled and rotatably connected in the other mounting hole of the fixed baffle; the lifting mechanism is assembled on the lead screw and the main shaft, and the rotary arm lead screw of the rotary support arm component is connected to the main shaft. The lifting mechanism is used to control the lifting of the rotary arm, thereby realizing the height adjustment of the rotary support arm component.

[0012] Further, the support column component includes a support column, an adjusting screw, a copper gasket and an inner hexagon screw;

[0013] The support column is a round shaft, one end of which is fixedly connected to the central mounting plate, and the other end is provided with an internal thread to connect the adjusting screw to form a movable rod; a copper gasket is arranged at the end of the adjusting screw, and it is connected to the adjusting screw through an inner hexagon screw. The inner hexagon screw sinks into the copper gasket to avoid touching the inner cavity of the ring-type stepped plane flange; the copper gasket abuts against the inner cavity of the ring-type stepped plane flange to radially position the cross positioning component.

[0014] Furthermore, the rotary support arm component includes a rotary arm, a nut, a rotary shaft rotating sleeve, a rotary shaft, a support arm, a support arm sleeve, a servo motor connecting plate, a nitrogen spring and a bolt component;

[0015] The slewing arm is a long strip-shaped plate, on which a numerical control system is installed. One end of the slewing arm is provided with a spindle connecting sleeve connected to the spindle, and the slewing arm moves up and down along the spindle guide. The other end of the slewing arm is provided with a rotary shaft sleeve. The nut is arranged on the side of the spindle connecting sleeve of the slewing arm and is connected to the lead screw. When the lead screw rotates, the nut slides along the lead screw, driving the slewing arm to lift and adjust the height. Among them, the axial direction of the nut is parallel to the axial direction of the spindle connecting sleeve, so that the spindle and the lead screw are axially parallel. The rotary shaft rotating sleeve is a block structure arranged on the upper part of the rotary shaft sleeve, with a through shaft hole at one end and an open groove at the other end, and the shaft hole and the groove are in the same direction. The rotary shaft has a shoulder, and the rotary shaft passes through the shaft hole of the rotary shaft rotating sleeve and extends into the rotary shaft sleeve of the slewing arm, movably connecting the slewing arm and the rotary shaft rotating sleeve. A lifting lug is arranged on the shoulder of the rotary shaft for assembly. The support arm is a rotating connecting rod, and support arm sleeves are arranged at both ends of the support arm. The support arm sleeve at one end is assembled in the groove of the rotary shaft rotating sleeve and is locked and fixed through a support arm pin shaft assembly. The nitrogen spring is an elastic component with high-pressure nitrogen as the working medium, configured in pairs, with one end connected to the outer side of the support arm and the other end fixed on both sides of the rotary shaft rotating sleeve, and has a stable elastic pressure to control the rotation of the support arm. The servo motor connecting plate is a symmetrically arranged structural plate. At one end of the servo motor connecting plate, a support arm sleeve is assembled between the two servo motor connecting plates and is locked and fixed through a support arm pin shaft assembly. At the other end of the servo motor connecting plate, a fixing block of the servo feed driving mechanism is assembled between the two servo motor connecting plates and is connected and fixed through a bolt assembly, so that the servo feed driving mechanism is adjusted along with the servo motor connecting plate.

[0016] Positive effects:

[0017] The technical solution provided in the embodiment of the present application has at least the following technical effects or advantages:

[0018] 1. Since the embodiment of the present application adopts the technical means of arranging a support column component and a limit component under the cross positioning component, the cross positioning component can perform radial positioning in the inner cavity of the ring-type stepped plane flange, and can also perform axial positioning on the end face of the ring-type stepped plane flange, effectively solving the technical problem of the perpendicularity of the thread axis in the prior art, and further achieving the technical effect of positioning the cross positioning component on the ring-type stepped plane flange for processing plane threaded holes.

[0019] 2. Since the embodiment of the present application adopts the technical means of arranging a lifting mechanism at the top of the cross positioning component, and a slewing support arm component is arranged between the cross positioning component and the servo feed drive mechanism. On the one hand, the slewing support arm component can adjust the height through the lifting mechanism of the cross positioning component; on the other hand, the slewing support arm component rotates around the cross positioning component to adjust the centering and alignment of the servo feed drive mechanism with the threaded holes of the ring-type stepped flat flange, effectively solving the technical problem of centering and alignment of threaded holes in the prior art, and thus achieving the technical effect of machining the threaded holes of the ring-type stepped flat flange.

[0020] 3. Since the embodiment of the present application adopts the technical means of arranging a support flange at the lower part of the cross positioning component, the support flange is provided with a main shaft, and the slewing support arm component connected to the lead screw and the main shaft can rotate around the main shaft, which is convenient for adjusting the spatial position of the slewing support arm component, effectively solving the technical problem of centering and alignment of threaded holes in the prior art, and thus achieving the technical effect of centering and aligning the tap on the servo feed drive mechanism with the threaded holes of the ring-type stepped flat flange.

[0021] 4. Since the embodiment of the present application adopts the technical means of arranging a lifting mechanism at the top of the cross positioning component, and the lead screw of the lifting mechanism and the main shaft are assembled with a slewing arm, effectively solving the technical problems in the prior art, and thus achieving the technical effect that the slewing arm drives the slewing support arm component to rotate and move up and down.

[0022] 5. Since the embodiment of the present application adopts the technical means of arranging a copper gasket at the end of the adjusting screw and connecting it with an internal hexagon screw, the internal hexagon screw sinks into the copper gasket, and the copper gasket directly touches the inner cavity of the ring-type stepped flat flange and is adjusted with the rotation of the adjusting screw, effectively solving the technical problem of centering and alignment of threaded holes in the prior art, and thus achieving the technical effect of placing the cross positioning component at the center of the ring-type stepped flat flange.

[0023] 6. Since the embodiment of the present application adopts the technical means of connecting the rotary shaft sleeve and the rotary shaft rotating sleeve through a rotary shaft, and the rotary shaft rotating sleeve is connected through a support arm, the main shaft connecting sleeve of the slewing arm is assembled on the main shaft, and the nut is assembled on the lead screw, effectively solving the technical problem of the slewing arm pulling the slewing support arm component to rotate in the prior art, and thus achieving the technical effect that the servo feed drive mechanism assembled on the servo motor connecting plate can rotate along with the slewing arm.

[0024] 7. Since the embodiment of the present application adopts the technical means of assembling a nitrogen spring between the support arm and the rotary shaft rotating sleeve, effectively solving the technical problem of forming a stable elastic pressure control linkage between the rotary shaft rotating sleeve and the servo motor connecting plate in the prior art, and thus achieving the technical effects of stable machining state of the servo feed drive mechanism and high machining accuracy of the threaded holes.

[0025] It is suitable to be used as a device for machining the plane threaded holes of a ring-type stepped plane flange. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Isometric view from the southeast of this embodiment;

[0028] Figure 2 Isometric view from the southeast of the servo feed drive mechanism;

[0029] Figure 3 Isometric view from the southeast of the rotary support arm assembly;

[0030] Figure 4 Front view of the rotary support arm assembly;

[0031] Figure 5 Top view of the rotary support arm assembly;

[0032] Figure 6 Isometric view from the southeast of the cross positioning assembly.

[0033] In the figure:

[0034] 1. Servo feed drive mechanism,

[0035] 11. Servo motor,

[0036] 12. Fixed block,

[0037] 121. Through hole,

[0038] 13. Double-stage precision reducer,

[0039] 14. Tap quick-change chuck,

[0040] 15. Tap,

[0041] 16. Countersunk head screw;

[0042] 2. Rotary support arm assembly,

[0043] 21. Rotary arm,

[0044] 211. Spindle connecting sleeve,

[0045] 212. Rotary shaft sleeve,

[0046] 22. Threaded nut,

[0047] 23. Rotating shaft rotating sleeve

[0048] 24. Rotating shaft

[0049] 25. Support arm

[0050] 26. Support arm sleeve

[0051] 261. Support arm pin shaft assembly

[0052] 27. Servo motor connecting plate

[0053] 28. Nitrogen spring

[0054] 29. Bolt assembly

[0055] 3. Numerical control system

[0056] 4. Cross positioning assembly

[0057] 41. Central mounting plate

[0058] 42. Support flange

[0059] 43. Spindle

[0060] 44. Lead screw

[0061] 45. Lifting mechanism

[0062] 451. Lifting motor fixing plate

[0063] 452. Lifting motor

[0064] 453. Reducer

[0065] 454. Lifting switch

[0066] 455. Hoisting ring

[0067] 46. Fixed baffle

[0068] 47. Support column assembly

[0069] 471. Support column

[0070] 472. Adjusting screw

[0071] 473. Copper gasket

[0072] 474. Socket head cap screw

[0073] 48. Limit assembly

[0074] 481. Limit plate

[0075] 482. Fastening bolt Specific Embodiments

[0076] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle 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 of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0077] The embodiment of this application provides a device for machining flat threaded holes of a ring-type stepped flat flange, which solves the problems that are likely to occur during the machining of flat threaded holes of a ring-type stepped flat flange in the prior art. In the machining of flat threaded holes of a ring-type stepped flat flange, the cross-positioning component 4 and the rotary support arm component 2 are used to realize the adjustment of the servo feed drive mechanism 1.

[0078] As shown in the figure, a device for machining flat threaded holes of a ring-type stepped flat flange includes a servo feed drive mechanism 1, a rotary support arm component 2, a numerical control system 3, and a cross-positioning component 4;

[0079] The servo feed drive mechanism 1 includes a servo motor 11, a fixed block 12, a two-stage precision reducer 13, a tap quick-change chuck 14, and a tap 15;

[0080] The fixed block 12 is a mounting seat. The servo motor 11 is assembled on the fixed block 12, and the output end of the servo motor 11 is assembled with the two-stage precision reducer 13; the output end of the two-stage precision reducer 13 is assembled with a tap quick-change chuck 14, and the tap quick-change chuck 14 is assembled with taps 15 of different specifications according to the construction requirements for machining threaded holes;

[0081] The rotary support arm component 2 is a linkage mechanism with a rotary arm 21 and a support arm 25. One end of the support arm 25 is connected to the servo feed drive mechanism 1. The position of the servo feed drive mechanism 1 is adjusted through the rotary support arm component 2 to achieve centering and alignment with the threaded hole;

[0082] A lifting mechanism 45 is provided at the upper part of the cross positioning component 4. The rotary arm 21 is assembled thereon and rises and falls therewith. Furthermore, the lifting mechanism 45 adjusts the height of the rotary support arm assembly 2 and the servo feed drive mechanism 1 to meet the requirements of thread hole machining. At the lower part of the cross positioning component 4, a support column assembly 47 and a limit component 48 are provided, which are used to position the flat thread hole machining device on the ring-type stepped flat flange. Among them, the support column assembly 47 is embedded in the inner cavity of the ring-type stepped flat flange for radial positioning, and the limit component 48 is located on the end face of the ring-type stepped flat flange for axial positioning.

[0083] Among them, the cross positioning component 4 positions the flat thread hole machining device on the ring-type stepped flat flange. The spatial movement of the tap 15 on the servo feed drive mechanism 1 is realized by using the rotary support arm assembly 2. The power provided by the servo feed drive mechanism 1 drives the tap 15 to rotate for cutting. At the same time, through the control of the numerical control system 3, intelligent operation is realized, and finally the thread hole machining of the ring-type stepped flat flange is completed.

[0084] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0085] Since the support column assembly 47 and the limit component 48 are provided at the lower part of the cross positioning component 4, the cross positioning component 4 can be radially positioned in the inner cavity of the ring-type stepped flat flange and can also be axially positioned on the end face of the ring-type stepped flat flange, so as to realize the positioning of the cross positioning component 4 on the ring-type stepped flat flange for flat thread hole machining.

[0086] Since a lifting mechanism 45 is provided at the top of the cross positioning component 4 and a rotary support arm assembly 2 is provided between the cross positioning component 4 and the servo feed drive mechanism 1, on the one hand, the rotary support arm assembly 2 can adjust the height through the lifting mechanism 45 of the cross positioning component 4; on the other hand, the rotary support arm assembly 2 rotates around the cross positioning component 4 to adjust the servo feed drive mechanism 1 to center and align with the thread hole of the ring-type stepped flat flange, so as to realize the machining of the thread hole of the ring-type stepped flat flange.

[0087] To ensure the stability of the structure of this embodiment, the fixing block 12 of the servo feed drive mechanism 1 is of a rectangular block structure. The servo motor 11 is assembled at one end of the fixing block 12 and is locked and fixed by a countersunk head screw 16; through holes 121 are arrayed at the other end of the fixing block 12 for screwing connection with the rotary support arm assembly 2.

[0088] In this embodiment, in order to meet the high speed and high efficiency during the machining of small-sized thread holes and the low speed and stability during the machining of large-sized thread holes, a two-speed precision reducer 13 is selected in the servo feed drive mechanism 1, and the quick conversion between high speed and low speed can be quickly completed by selecting the reduction ratio through the numerical control system.

[0089] In this embodiment, various parameters for machining common threaded holes have been set in the numerical control system 3 according to the national standard, such as: pitch, tapping depth, tapping speed, retracting speed, torque, machining count, and manual / automatic mode switching setting. After the numerical control system 3 is powered on, the thread machining parameters are set in the numerical control system 3 to achieve intelligent depth setting, automatic tapping and retracting. In this embodiment, the thread machining of threaded holes at any position within a radius range of 1200 mm can be completed.

[0090] To further ensure the stability of the structure of this embodiment, the cross positioning assembly 4 includes a central mounting plate 41, a support flange 42, a main shaft 43, a lead screw 44, a lifting mechanism 45, a fixed baffle 46, a support column assembly 47, and a limit assembly 48;

[0091] The central mounting plate 41 is a rectangular plate for supporting the cross positioning assembly 4;

[0092] The support column assembly 47 is arrayed on the end face of the central mounting plate 41 for supporting inside the inner cavity of the ring-type stepped plane flange, and can radially position the cross positioning assembly; in this embodiment, the support column assembly 47 has four pieces and is evenly distributed on the end face of the central mounting plate 41;

[0093] The limit assembly 48 is arrayed on the upper surface of the central mounting plate 41 and is staggered with the support column assembly 47 for seating the cross positioning assembly on the end face of the ring-type stepped plane flange and axially positioning it; in this embodiment, the limit assembly 48 has four pieces and is evenly distributed on the upper surface of the central mounting plate 41;

[0094] The support flange 42 is located at the center of the central mounting plate 41, and its lower part is connected to the central mounting plate 41;

[0095] The main shaft 43 is a guide post and is vertically rotatably connected to the support flange 42;

[0096] The fixed baffle 46 is sleeved on the bottom of the main shaft 43 and is adjacent to the support flange 42; two mounting holes are provided on the fixed baffle 46, and one of the mounting holes is used for assembling the movable connection of the main shaft 43;

[0097] The lead screw 44 is arranged in parallel with the main shaft 43, and its lower part is assembled and rotatably connected to the other mounting hole of the fixed baffle 46;

[0098] The lifting mechanism 45 is assembled on the lead screw 44 and the main shaft 43. The lead screw 44 of the rotary arm 21 of the rotary support arm assembly 2 is connected to the main shaft 43. The lifting mechanism 45 is used to control the lifting of the rotary arm 21, thereby realizing the height adjustment of the rotary support arm assembly 2.

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

[0100] Since a support flange 42 is provided at the lower part of the cross positioning assembly 4, and a main shaft 43 is provided on the support flange 42, the slewing support arm assembly 2 connected to the lead screw 44 and the main shaft 43 can rotate around the main shaft 43, facilitating the adjustment of the spatial position of the slewing support arm assembly 2, thereby adjusting the alignment of the tap 15 on the servo feed drive mechanism 1 with the threaded hole of the ring-type stepped plane flange.

[0101] To optimize the structure of this embodiment, the lifting mechanism 45 includes a lifting motor fixing plate 451, a lifting motor 452, a reducer 453, a lifting switch 454, and a lifting ring 455;

[0102] The lifting motor fixing plate 451 is a rectangular plate, sleeved on the top end of the main shaft 43. A lifting motor 452 and a reducer 453 are assembled on the lifting motor fixing plate 451. The output end of the reducer 453 passes through the lifting motor fixing plate 451 and is connected to the lead screw 44; a lifting switch 454 is provided on the lifting motor fixing plate 451 to control the start and stop of the lifting motor 452; a lifting ring 455 is provided on the side of the lifting motor fixing plate 451 for the hoisting and handling of the cross positioning assembly 4.

[0103] Among them, the lifting motor fixing plate 451 and the fixed baffle 46 are sleeved on both ends of the main shaft 43, and the lifting mechanism 45 and the lead screw 44 can rotate around the main shaft 43.

[0104] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0105] Since a lifting mechanism 45 is provided at the top of the cross positioning assembly 4, and a slewing arm 21 is assembled on the lead screw 44 and the main shaft 43 of the lifting mechanism 45, the slewing arm 21 drives the slewing support arm assembly 2 to rotate and move up and down.

[0106] To further optimize the structure of this embodiment, the support column assembly 47 includes a support column 471, an adjustment screw 472, a copper gasket 473, and an inner hexagon screw 474;

[0107] The support column 471 is a round shaft, one end of which is fixedly connected to the central mounting plate 41, and the other end is provided with an internal thread to connect the adjustment screw 472 to form a movable rod. The adjustment screw 472 is screwed with the support column 471 to adjust the length of the rod, so as to adapt to the inner cavity of the ring-type stepped plane flange; a copper gasket 473 is provided at the end of the adjustment screw 472, and it is connected to the adjustment screw 472 through an inner hexagon screw 474. The inner hexagon screw 474 sinks into the copper gasket 473 to avoid touching the inner cavity of the ring-type stepped plane flange; the copper gasket 473 abuts against the inner cavity of the ring-type stepped plane flange to radially position the cross positioning assembly 4.

[0108] As a conventional technical option, the limit assembly 48 includes a limit plate 481 and a fastening bolt 482;

[0109] The limiting plates 481 are long plate-shaped structures, which are evenly distributed on the upper surface of the central mounting plate 41 and are locked and fixed by fastening bolts 482 to fix the cross positioning assembly 4 to the end face of the stepped plane flange to achieve axial positioning.

[0110] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0111] Since a copper gasket 473 is provided at the end of the adjusting screw 472 and is connected by a hexagon socket screw 474, the hexagon socket screw 474 is sunk into the copper gasket 473. Therefore, the copper gasket 473 directly touches the inner cavity of the annular stepped plane flange. With the rotation and adjustment of the adjusting screw 472, the cross positioning assembly 4 can be placed at the center of the annular stepped plane flange.

[0112] In order to further optimize the structure of this embodiment, the swivel support arm assembly 2 includes a swivel arm 21, a nut 22, a swivel shaft rotating sleeve 23, a swivel shaft 24, a support arm 25, a support arm sleeve 26, a servo motor connecting plate 27, a nitrogen spring 28 and a bolt assembly 29;

[0113] The swivel arm 21 is a long strip plate, on which a numerical control system 3 is installed. A spindle connecting sleeve 211 is provided at one end of the swivel arm 21 and connected to the spindle 43. The swivel arm 21 moves up and down along the guide of the spindle 43. A swivel sleeve 212 is provided at the other end of the swivel arm 21.

[0114] The nut 22 is arranged on the side of the main shaft connecting sleeve 211 of the rotating arm 21, and the nut 22 is connected to the lead screw 44. When the lead screw 44 rotates, the nut 22 slides along the lead screw 44, driving the rotating arm 21 to rise and fall to adjust the height; wherein the axial direction of the nut 22 is parallel to the axial direction of the main shaft connecting sleeve 211, thereby making the main shaft 43 and the lead screw 44 axially parallel;

[0115] The rotary shaft sleeve 23 is a block structure arranged on the upper part of the rotary shaft sleeve 212, with a through shaft hole at one end and an open groove at the other end, and the shaft hole and the groove are in the same direction;

[0116] The rotary shaft 24 has a shaft shoulder, and the rotary shaft 24 passes through the shaft hole of the rotary shaft rotating sleeve 23 and enters the rotary shaft sleeve 212 of the rotary arm 21, so as to flexibly connect the rotary arm 21 with the rotary shaft rotating sleeve 23; a lifting ear is provided on the shaft shoulder of the rotary shaft 24 for assembly;

[0117] The support arm 25 is a rotating connecting rod, and support arm sleeves 26 are provided at both ends of the support arm 25. The support arm sleeve 26 at one end is assembled in the groove of the rotary sleeve 23 of the rotary shaft, and is locked and fixed by the support arm pin assembly 261. In this embodiment, the support arms 25 are arranged in two groups in parallel to form a linked parallel connecting rod mechanism.

[0118] The nitrogen gas spring 28 is an elastic component with high-pressure nitrogen gas as the working medium. It is configured in pairs, with one end connected to the outer side of the support arm 25 and the other end fixed on both sides of the rotary shaft rotating sleeve 23; it has a stable elastic pressure to control the rotation of the support arm 25.

[0119] The servo motor connecting plate 27 is a symmetrically arranged structural plate. At one end of the servo motor connecting plate 27, a support arm sleeve 26 is assembled between the two servo motor connecting plates 27 and is locked and fixed through the support arm pin shaft assembly 261; at the other end of the servo motor connecting plate 27, a fixed block 12 of the servo feed driving mechanism 1 is assembled between the two servo motor connecting plates 27 and is connected and fixed through the bolt assembly 29, so that the servo feed driving mechanism 1 is adjusted along with the servo motor connecting plate 27. In this embodiment, the bolt assembly 29 passes through the through holes 121 arrayed on the fixed block 12 to fix the fixed block 12 between the two servo motor connecting plates 27.

[0120] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0121] Since the main shaft connecting sleeve 211 of the rotary arm 21 is assembled on the main shaft 43 and the lead nut 22 is assembled on the lead screw 44, the rotary arm 21 pulls the rotary support arm assembly 2 to rotate.

[0122] Since the rotary shaft sleeve 212 and the rotary shaft rotating sleeve 23 are connected by the rotary shaft 24 and the rotary shaft rotating sleeve 23 is connected by the support arm 25, the servo feed driving mechanism 1 assembled on the servo motor connecting plate 27 can rotate along with the rotary arm 21.

[0123] Since a nitrogen gas spring 28 is assembled between the support arm 25 and the rotary shaft rotating sleeve 23, a stable elastic pressure control linkage is formed between the rotary shaft rotating sleeve 23 and the servo motor connecting plate 27, so that the machining state of the servo feed driving mechanism 1 is stable and the machining accuracy of the threaded hole is high.

[0124] As a conventional technical option, the support arm pin shaft assembly 261 includes a pin shaft, a washer, a spring washer and a bolt;

[0125] The support arm pin shaft assembly 261 penetrates through the groove of the rotary shaft rotating sleeve 23. A shaft shoulder limit is provided at one end of the pin shaft, and the other end is locked through a washer, a spring washer and a bolt.

[0126] The working process of this embodiment:

[0127] First, position the plane threaded hole machining device on the ring-type stepped plane flange through the cross positioning assembly 4, perform radial positioning by adjusting the support column assembly 47, and perform axial fixation by the limit assembly 48;

[0128] Secondly, adjust the height of the slewing support arm assembly 2 and the servo feed drive mechanism 1 through the lifting motor 452 of the lifting mechanism 45 to meet the processing requirements;

[0129] Next, after the numerical control system 3 is powered on, set the thread processing parameters in the numerical control system 3. Manually drag the servo feed drive mechanism 1 and the slewing support arm assembly 2 to rotate around the main shaft 43 of the cross positioning assembly 4, and gently press down the servo feed drive mechanism 1 to make the tap 15 close to the threaded hole to be processed on the ring-type stepped plane flange. Fine-tune the plane thread hole processing device to finally align the tap 15 with the threaded hole;

[0130] Finally, turn on the switch of the servo feed drive mechanism 1, and slowly let the tap 15 smoothly enter the threaded hole to achieve cutting. When the cutting is normal, remove the external force and perform the threaded hole processing.

[0131] It should be noted that the content not described in detail in the specification belongs to the prior art well-known to those skilled in the art, and the model parameters of the servo motor 11, double-stage precision reducer 13, tap quick-change chuck 14, tap 15, lifting motor 452, reducer 453, lifting switch 454 and nitrogen spring 28 are not specifically limited, and conventional equipment can be used. In this technical solution, since the numerical control system 3 and the electrical control components not mentioned belong to the prior art, they are not shown in the figure and will not be described here.

[0132] Finally, it should be noted that:

[0133] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for processing threaded holes on a ring-type stepped flat flange surface, characterized in that: It comprises a servo feed drive mechanism (1), a rotary support arm assembly (2), a numerical control system (3) and a cross positioning assembly (4); The servo feed drive mechanism (1) comprises a servo motor (11), a fixing block (12), a double-speed precision reducer (13), a tap quick-change chuck (14) and a tap (15); The fixed block (12) is a mounting seat, a servo motor (11) is mounted on the fixed block (12), and a double-speed precision reducer (13) is mounted on the output end of the servo motor (11); a tap quick-change chuck (14) is mounted on the output end of the double-speed precision reducer (13), and a tap (15) is mounted on the tap quick-change chuck (14) for threaded hole processing; The swivel support arm assembly (2) is a linkage connecting rod mechanism having a swivel arm (21) and a support arm (25); one end of the support arm (25) is connected to the servo feed drive mechanism (1); the position of the servo feed drive mechanism (1) is adjusted by the swivel support arm assembly (2) to achieve alignment with the threaded hole; The upper portion of the cross positioning assembly (4) is provided with a lifting mechanism (45), on which the slewing arm (21) is mounted and raised and lowered accordingly; the lower portion of the cross positioning assembly (4) is provided with a support column assembly (47) and a stop assembly (48), which are used to position the planar threaded hole processing device on the annular stepped plane flange, wherein the support column assembly (47) is embedded in the inner cavity of the annular stepped plane flange for radial positioning, and the stop assembly (48) is located on the end surface of the annular stepped plane flange for axial positioning; The cross positioning assembly (4) positions the planar threaded hole processing device on the annular stepped plane flange, and the rotary support arm assembly (2) is used to realize the spatial movement of the tap (15) on the servo feed drive mechanism (1). The servo feed drive mechanism (1) drives the tap (15) to rotate to realize cutting. At the same time, the threaded hole processing of the annular stepped plane flange is completed through the control of the numerical control system (3).

2. According to claim 1, a device for machining threaded holes on a ring-type stepped flat flange surface, characterized in that: The fixed block (12) of the servo feed drive mechanism (1) is a rectangular block structure; the servo motor (11) is mounted on one end of the fixed block (12) and is locked and fixed by a countersunk screw (16); the other end of the fixed block (12) is provided with an array of through holes (121) for being screwed to the slewing support arm assembly (2).

3. The device for machining threaded holes on a ring-type stepped flat flange according to claim 1 is characterized in that: The cross positioning assembly (4) comprises a central mounting plate (41), a supporting flange (42), a main shaft (43), a lead screw (44), a lifting mechanism (45), a fixed baffle (46), a supporting column assembly (47) and a limiting assembly (48); The central mounting plate (41) is a rectangular plate used to support the cross positioning assembly (4); The support column assembly (47) is arrayed on the end surface of the central mounting plate (41) and is used to support the inner cavity of the annular stepped plane flange, so as to radially position the cross positioning assembly (4); The limiting components (48) are arrayed on the upper surface of the central mounting plate (41) and are arranged alternately with the support column components (47) to seat the cross positioning component (4) on the end surface of the annular stepped plane flange and position it axially; The supporting flange (42) is located at the center of the central mounting plate (41), and its lower part is connected to the central mounting plate (41); The main shaft (43) is a guide column, which is vertically rotatably connected to the support flange (42); The fixed baffle (46) is sleeved on the bottom of the main shaft (43) and is adjacent to the supporting flange (42); two mounting holes are provided on the fixed baffle (46), one of which is used for assembling the main shaft (43) for movable connection; The lead screw (44) is arranged in parallel with the main shaft (43), and the lower part is assembled on another mounting hole of the fixed baffle (46) for rotational connection; The lifting mechanism (45) is assembled on the lead screw (44) and the main shaft (43); the lead screw (44) of the slewing arm (21) of the slewing support arm assembly (2) is connected to the main shaft (43); the lifting mechanism (45) is used to control the lifting and lowering of the slewing arm (21), thereby realizing the height adjustment of the slewing support arm assembly (2).

4. The device for machining threaded holes on a ring-type stepped flat flange according to claim 3 is characterized in that: The lifting mechanism (45) comprises a lifting motor fixing plate (451), a lifting motor (452), a reducer (453), a lifting switch (454) and a lifting ring (455); The lifting motor fixing plate (451) is a rectangular plate, which is mounted on the top of the main shaft (43). The lifting motor (452) and the reducer (453) are mounted on the lifting motor fixing plate (451). The output end of the reducer (453) passes through the lifting motor fixing plate (451) and is connected to the lead screw (44). The lifting motor fixing plate (451) is provided with a lifting switch (454) to control the start and stop of the lifting motor (452). The side of the lifting motor fixing plate (451) is provided with a lifting ring (455) for lifting and transporting the cross positioning assembly (4). The lifting motor fixing plate (451) and the fixing baffle (46) are sleeved on both ends of the main shaft (43), and the lifting mechanism (45) and the lead screw (44) are capable of rotating around the main shaft (43).

5. The device for machining threaded holes on a ring-type stepped flat flange according to claim 3 is characterized in that: The support column assembly (47) comprises a support column (471), an adjustment screw (472), a copper gasket (473) and a hexagon socket screw (474); The support column (471) is a round shaft, one end of which is connected and fixed to the central mounting plate (41), and the other end of which is provided with an internal thread connected to the adjusting screw (472) to form a movable rod; a copper gasket (473) is provided at the end of the adjusting screw (472) and is connected to the adjusting screw (472) by a hexagon socket screw (474); the hexagon socket screw (474) is sunk into the copper gasket (473) to avoid touching the inner cavity of the annular stepped plane flange; the copper gasket (473) contacts the inner cavity of the annular stepped plane flange to radially position the cross positioning assembly (4).

6. The device for machining threaded holes on a ring-type stepped flat flange according to claim 3 is characterized in that: The limiting assembly (48) comprises a limiting plate (481) and a fastening bolt (482); The limiting plates (481) are long plate-shaped structures, evenly distributed on the upper surface of the central mounting plate (41) and locked and fixed by fastening bolts (482), fixing the cross positioning assembly (4) to the end surface of the stepped plane flange to achieve axial positioning.

7. The device for machining threaded holes on a ring-type stepped flat flange according to claim 3 is characterized in that: The slewing support arm assembly (2) comprises a slewing arm (21), a nut (22), a slewing shaft rotating sleeve (23), a slewing shaft (24), a support arm (25), a support arm sleeve (26), a servo motor connecting plate (27), a nitrogen spring (28) and a bolt assembly (29); The swivel arm (21) is a long strip-shaped plate. A numerical control system (3) is installed on the swivel arm (21). A main shaft connecting sleeve (211) is provided at one end of the swivel arm (21) and is connected to the main shaft (43). The swivel arm (21) moves vertically along the guide of the main shaft (43). A swivel shaft sleeve (212) is provided at the other end of the swivel arm (21). The nut (22) is arranged on the side of the main shaft connecting sleeve (211) of the rotating arm (21), and the nut (22) is connected to the lead screw (44). When the lead screw (44) rotates, the nut (22) slides along the lead screw (44), driving the rotating arm (21) to rise and fall to adjust the height; wherein the axial direction of the nut (22) is parallel to the axial direction of the main shaft connecting sleeve (211), thereby making the main shaft (43) and the lead screw (44) axially parallel; The rotary shaft rotating sleeve (23) is a block-shaped structure arranged on the upper part of the rotary shaft sleeve (212), one end of which is provided with a through shaft hole, and the other end of which is provided with an open groove, and the shaft hole and the groove are in the same direction; The rotary shaft (24) has a shaft shoulder, and the rotary shaft (24) passes through the shaft hole of the rotary shaft rotating sleeve (23) and enters the rotary shaft sleeve (212) of the rotary arm (21), so as to flexibly connect the rotary arm (21) and the rotary shaft rotating sleeve (23); a lifting lug is provided on the shaft shoulder of the rotary shaft (24) for assembly; The support arm (25) is a rotating connecting rod, and support arm sleeves (26) are provided at both ends of the support arm (25). The support arm sleeve (26) at one end is assembled in the groove of the rotating sleeve (23) of the rotating shaft and is locked and fixed by a support arm pin assembly (261); The nitrogen spring (28) is an elastic component using high-pressure nitrogen as a working medium, and is arranged in pairs, with one end connected to the outer side of the support arm (25) and the other end fixed to both sides of the rotary sleeve (23) of the rotary shaft; it has a stable elastic force to control the rotation of the support arm (25); The servo motor connecting plate (27) is a symmetrically arranged structural plate. At one end of the servo motor connecting plate (27), a support arm sleeve (26) is mounted between the two servo motor connecting plates (27) and is locked and fixed by a support arm pin assembly (261); at the other end of the servo motor connecting plate (27), a fixing block (12) of the servo feed drive mechanism (1) is mounted between the two servo motor connecting plates (27) and is connected and fixed by a bolt assembly (29), so that the servo feed drive mechanism (1) can be adjusted along with the servo motor connecting plate (27).

8. The device for machining threaded holes on a ring-type stepped flat flange according to claim 7 is characterized in that: The support arm pin shaft assembly (261) comprises a pin shaft, a washer, a spring washer and a bolt; The support arm pin shaft assembly (261) passes through the groove of the rotary shaft rotating sleeve (23); one end of the pin shaft is provided with a shaft shoulder limiter, and the other end is locked by a washer, a spring washer and a bolt.

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