CN112387998B

CN112387998B - Automatic compensation dynamic balance boring cutter

Info

Publication number: CN112387998B
Application number: CN202011334501.5A
Authority: CN
Inventors: 纪成鑫
Original assignee: Shenzhen Huaheng Guangneng Technology Co ltd
Current assignee: Shenzhen Huaheng Guangneng Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2024-07-23
Anticipated expiration: 2040-11-25
Also published as: CN112387998A

Abstract

The invention relates to the technical field of boring cutter processing, solves the problems that in the prior art, a boring cutter does not have a dynamic balance function, so that the damage to a main shaft is large, the processing speed efficiency is high, the boring quality is low, and particularly relates to an automatic compensation dynamic balance boring cutter. The automatic compensation dynamic balance boring cutter has the advantages that the structure is compact and reasonable, the boring range is wide by 6 MM-320 MM, the manual type weight is reduced by 41 MM, the fine adjustment scale can be doubled to one fine adjustment scale with the diameter of 0.0025MM, the deformation dynamic balance is provided with flexibility and adjustability, the general boring cutter can be changed from the condition that the dynamic balance adjustment cannot be carried out to the condition that the dynamic balance adjustment can be carried out, the processing efficiency is improved, the precision and the smoothness of an inner hole are improved, the abrasion is reduced by matching with the integral weight reduction design to protect a main shaft, the computer calculation of the asymmetric weight after the NBH2084 displacement without the dynamic balance is reduced by more than 236g, the market demand of middle-high end boring cutter which has the service life of a machine tool and pursues the processing efficiency is met, and the automatic compensation dynamic balance boring cutter is worth greatly popularized and used.

Description

Automatic compensation dynamic balance boring cutter

Technical Field

The invention relates to the technical field of boring cutter processing, in particular to an automatic compensation dynamic balance boring cutter.

Background

Boring means a device for further processing of a forged, cast or drilled hole. The boring hole can enlarge the aperture, improve the precision, reduce the surface roughness and correct the deflection of the original hole axis well. The boring may be classified into rough boring, semi-finish boring and finish boring. The precision of the fine boring hole can reach IT 8-IT 7, and the surface roughness Ra value is 1.6-0.8 mu m. The boring cutter is a cutter matched with the boring machine. In the modern manufacturing industry, the product processing development direction is developed in a high-precision, efficient, stable and professional direction, and high requirements are provided for various processed cutters.

The general categories of boring tools currently available for use with a bore machine are as follows (assistant solutions):

1. the first market minimum diameter fine-tuning fine boring head has fine-tuning scales of 0.0025 and 0.005 of diameter of 11 MM.

2. The market first type of the highest precision fine adjustment fine boring head tool apron type fine adjustment scale is 0.0005 diameter 0.001 range diameter 20 MM.

3. The first market fine-tuning fine boring head boring bar type fine-tuning scale with highest precision is 0.001 diameter and 0.002 range diameter of 3-208MM+.

4. The first adjustable boring head in the market is rough boring. Preliminary design fine tuning scale 0.05 diameter 0.1 range diameter 20-280MM+

5. The first smallest fine-tuning fine boring head in the market (aiming at the small stepped hole boring head diameter 13 MM) has fine-tuning graduation of 0.0025 diameter of 0.005MM and boring range diameter of 1-15MM.

6. The first automatic compensation dynamic balance boring cutter (general type, 28MM for body movement) in the market is fine-tuned with 0.005MM scale, 0.01MM diameter and 0.001MM vernier scale, and the range is 6-320 MM.

7. The first market is the lightest 2084-environment-friendly (general-purpose) fine adjustment scale of 0.005MM and the diameter of 0.01MM of 6-280 mm+.

8. The market first model of automatic compensation dynamic balance (body moves 4 MM) fine boring cutter with highest precision, and fine adjustment scale is 0.001MM or 0.0005MM ranges from 3 MM to 208MM. The first echelon is precisely adjusted according to the fine adjustment scale of 0.001MM, the boring range is first, and other mechanical automatic compensation functions are absent.

The existing general boring cutters in the market have the common problem that dynamic balance is not available, 2084 is taken as a class, the weight of a boring head is 2.8KG, when the displacement adjustment is up to 28MM, the displacement asymmetric weight is calculated by a computer to be different by more than 550g based on the center, the damage to a main shaft is large, the processing speed efficiency is greatly reduced, the boring quality is not high, in addition, when 2084CNC is in the boring range of 20 MM-30 MM, the general parameter speed 800, the feeding speed of 15-20% and the feeding speed of a fine hole are slow, so that the processing speed of 2084 is limited by dynamic balance. If a boring cutter is designed through integral weight reduction, the cutter which can realize the improvement of the rotation speed of dynamic balance adjustment and further improve the processing efficiency and the quality of the hole is a good choice.

To this end we provide an automatically compensating dynamic balance boring cutter to solve the above problems.

Disclosure of Invention

The invention aims to provide an automatic compensation dynamic balance boring cutter, which solves the problems that the boring cutter in the prior art has no dynamic balance function, so that the damage to a main shaft is large, the processing speed efficiency is reduced greatly and the boring quality is not high in use.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

The automatic compensation dynamic balance boring cutter comprises a main body, wherein a column position matched with a joint handle is arranged at the upper part of the main body, a locking hole is formed in the column position, a screw rod displacement adjusting and automatic compensation dynamic balance mechanism is arranged in the main body, a sliding block locking mechanism is arranged on one side of the lower part of the main body, a boring rod locking mechanism is arranged in the sliding block locking mechanism, and a first empty groove is formed in the main body;

the sliding block locking mechanism comprises a screw hole III, a hole V, an insert pin, a hole V, an inner hexagon screw I, a screw hole IV, a headless screw III, a groove I, a screw hole V, an inner hexagon screw II, a belt Kong Yaban and a sliding block;

The screw rod displacement adjustment and automatic compensation dynamic balancing mechanism comprises a first hollow batch groove, a first hole, a dial screw rod, a first bearing, a copper nut at a handle position, a fixed groove, a first headless screw, a first screw hole, a second bearing, a nut, an elastic piece, kong Qi, a balancing rod rack, a gear mounting groove, a gear and a sliding block rack;

The boring bar locking mechanism is preferably arranged inside the sliding block, and the boring bar locking mechanism comprises: the device comprises a step groove, a wafer, a retainer ring, a boring bar I, a hole III, a screw hole II, a hole IV, a headless screw II and a boring bar II.

Preferably, the first bearing is installed in the corresponding hole one, the shank of the shank copper nut is inserted into the matching and fixing groove and is fixed with a headless screw one screwed on the first screw hole, the dial screw rod penetrates through an inner hole of the first bearing and the first screw hole, penetrates through the second hole to be inserted into the second bearing and is locked and fixed through a nut assembled on the second hole, wherein a spring piece is installed between the lock nut and the second bearing, kong Qi and a gear installation groove are formed in the main body, a balance bar and a gear are correspondingly installed outside the balance bar respectively, a slide block rack is also arranged on the slide block, and the upper part and the lower part of the gear correspond to the balance bar rack and the slide block rack respectively.

Preferably, one side of the sliding block is assembled in the first main body groove, the pressing plate with the hole is screwed in the third screw hole and the fifth screw hole which are formed in the main body through the first four inner hexagon screws and the second four inner hexagon screws, the sixth hole on the sliding block is provided with an insert pin, the insert pin is inserted and matched in the fifth hole on the main body to be positioned, the fourth screw holes are formed in one side of the main body, the third headless screw is screwed in the fourth screw hole, and one end of the third headless screw is in contact with the side edge of the sliding block.

Preferably, the two Kong Qi are respectively arranged at two sides of the dial screw rod by the axis of the dial screw rod, and the balance bar is arranged in the Kong Qi.

Preferably, the modulus of the gear is consistent with the modulus of the balance bar rack and the sliding block rack, and the outer ring of the gear is respectively connected with the balance bar rack and the sliding block rack in a meshed manner.

Preferably, the handle copper nut is arranged in the sliding block fixing groove and is fixed through a headless screw I arranged in a screw hole I outside the sliding block.

Preferably, a balance Kong Kongba is arranged in the slider, a hole III and a hole IV for inserting and matching the boring bar I and the boring bar II are arranged in the slider, and three screw holes II for screwing and matching the headless screw II are arranged on one side of the slider.

The invention has at least the following beneficial effects:

The automatic compensation dynamic balance boring cutter changes the condition that the general boring cutter cannot be subjected to dynamic balance adjustment into the condition that automatic compensation dynamic balance can be performed, improves the machining efficiency, improves the precision and the finish of an inner hole, protects a main shaft by matching with the integral weight reduction design, prolongs the service life of a machine tool and a cutter, has reasonable structure, is reliable and stable, and meets the high-end market demand in the precise boring cutter.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a front view of the present invention;

fig. 4 is a left side view of the present invention.

FIG. 5 is a right side view of the present invention;

FIG. 6 is a first variation of the present invention;

fig. 7 is a second modified version of the present invention.

In the figure: 1. a first batch empty groove; 2. a first hole; 3. a dial screw rod; 4. a first bearing; 5. a shank copper nut; 6. a fixing groove; 7. a first headless screw; 8. a screw hole I; 9. a second hole; 10. a second bearing; 11. a nut; 12. a spring plate; 13. a step groove; 14. a wafer; 15. a retainer ring; 16. boring bar I; 17. hole III; 18. a screw hole II; 19. a fourth hole; 20. a second headless screw; 21. boring bar II; 22. a screw hole III; 23. a fifth hole; 24. inserting a needle; 25. a sixth hole; 26. an inner hexagon screw I; 27. screw holes IV; 28. a headless screw III; 29. a first groove; 30. screw holes V; 31. an inner hexagon screw II; 32. a band Kong Yaban; 33. a slide block; 34. kong Qi; 35. a balance bar; 36. a balance bar rack; 37. a gear installation groove; 38. a gear; 39. a slide block rack; 40. a locking hole; 41. a main body; 42. hole eight; 43. the screw rod displacement adjustment and automatic compensation dynamic balance mechanism; 44. boring bar locking mechanism; 45. and the sliding block locking mechanism.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that, if there is any direction or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., it is for convenience of description and simplification of the description only, and does not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Embodiment one:

Referring to fig. 1-5, an automatic compensation dynamic balance boring cutter is disclosed, wherein a column position matched with a connecting handle is arranged at the upper part of a main body 41, a plurality of locking holes 40 are formed in the column position, the locking holes 40 are used for locking the connecting handle of a boring machine, a screw rod displacement adjusting and automatic compensation dynamic balance mechanism 43 is arranged in the main body 41, a sliding block locking mechanism 45 is arranged at one side of the lower part of the main body 41, a boring rod locking mechanism 44 is arranged in the sliding block locking mechanism 45, a first batch empty groove 1 is formed in the main body 41, and a first batch empty groove 1 in the main body 41 is used for providing a movable space when a copper nut 5 at the handle position slides;

Referring to fig. 1-5, an automatic compensation dynamic balance boring cutter, a slider locking mechanism 45 comprises screw holes three 22 and Kong Wu, an insert 24, a hole six 25, an inner hexagon screw one 26, a screw hole four 27, an endless screw three 28, a groove one 29, a screw hole five 30, an inner hexagon screw two 31, a belt Kong Yaban and a slider 33, one side of the slider 33 is assembled in the groove one 29 of a main body 41, a hole pressing plate 32 is screwed in the screw hole three 22 and the screw hole five 30 which are formed in the main body 41 through four inner hexagon screws one 26 and four inner hexagon screws two 31 and fixedly connected, the insert 24 is assembled on the hole six 25 on the slider 33, the insert 24 is inserted and positioned in the hole five 23 on the main body 41, one side of the main body 41 is provided with a plurality of screw holes four 27, the endless screw three 28 is screwed in the screw hole four 27, and one end of the endless screw three 28 is contacted with the side of the slider 33;

Referring to fig. 1 to 5, an automatic compensating dynamic balance boring cutter, a screw displacement adjusting and automatic compensating dynamic balance mechanism 43 comprises a first hollow groove 1, a first hole 2, a dial screw 3, a first bearing 4, a shank copper nut 5, a fixed groove 6, a first endless screw 7, a first screw hole 8, a second hole 9, a second bearing 10, a nut 11, a spring piece 12, kong Qi 34, a balance bar 35, a balance bar rack 36, a gear mounting groove 37, a gear 38 and a slide block rack 39, wherein the first bearing 4 is mounted in the corresponding first hole 2, the shank copper nut 5 is inserted and matched in the fixed groove 6 and fixed with the first endless screw 7 screwed in the first screw hole 8, the dial screw 3 is inserted and matched in the second bearing 10 through the second hole 9 after penetrating through the inner hole of the first bearing 4 and the first hole 2 respectively screwing in the shank copper nut 5 and is locked and fixed by a nut 11 assembled in the second hole 9, wherein the lock nut 11 is fixedly connected with the bearing II 10 through the bearings at two ends and the nut 11 at the tail end, long-term acting force is applied through the bearings and the nut 11 arranged in the middle of the nut 11 to remove the screw rotating clearance, kong Qi 34 and gear mounting grooves 37 are formed in the main body 41, a balance bar 35 and gears 38 and Kong Qi are correspondingly arranged in the main body 41 respectively and are used for providing a sliding channel for the balance bar 35, a balance bar rack 36 is arranged outside the balance bar 35, two holes seven 34 are respectively arranged at two sides of the dial screw 3 by the axis of the dial screw 3, the balance bar 35 is arranged in the holes seven 34, the gear 38 drives a sliding block rack 39 to move by more than 28MM when the balance bar 35 is used for adjusting the dial screw 3, the boring range can be enlarged by utilizing automatic compensation dynamic balance, and the sliding block rack 39 is also arranged on the sliding block 33, the upper and lower parts of the gear 38 respectively correspond to the balance bar rack 36 and the slide block rack 39, the slide block rack 39 is arranged outside the slide block 33 and is biased to one side of the dial screw 3 during assembly, the modulus of the gear 38 is consistent with the modulus of the balance bar rack 36 and the slide block rack 39, and the outer ring of the gear 38 is respectively connected with the balance bar rack 36 and the slide block rack 39 in a meshed manner;

Referring to fig. 1-5, an automatic compensation dynamic balance boring cutter, a boring bar locking mechanism 44 comprises a stepped groove 13, a disc 14, a retainer ring 15, a boring bar one 16, a hole three 17, a screw two 18, a hole four 19, a headless screw two 20 and a boring bar two 21, wherein the hole three 17 and the hole four 19 for inserting the boring bar one 16 and the boring bar two 21 are arranged in a sliding block 33, a balance Kong Kongba 42 is arranged in the sliding block 33, the balance Kong Kongba 42 plays a role in compensating data in the initial state of a boring head, meanwhile, the position of a specific hole can be corrected according to dynamic balance, a computer design is a theoretical value, three screw holes two 18 matched with the headless screw two 20 are arranged on one side of the sliding block 33, and when in use, the corresponding boring bar is inserted according to boring hole needs, the corresponding headless screw two 20 is locked, wherein the disc 14 and the retainer ring 15 for limiting the disc 14 are arranged in the stepped groove 13 to position the boring bar insertion depth, and the boring bar locking is completed.

The automatic compensation dynamic balance boring cutter can be adjusted to be used for manually compensating the dynamic balance boring cutter in the actual production, manufacturing and use processes (according to different use requirements of different markets) and accords with the markets; the following embodiment implements a manual compensation dynamic balance mechanism, when the rotary dial screw 3 drives the boring bar to move to a position requiring boring by using the screw adjusting slide 33, in this process, the dynamic balance compensation is not changed, and two balance screws are required to be adjusted by using a manual dynamic balance machine independently according to actual situation requirements to complete dynamic balance adjustment. The method comprises the following steps:

Embodiment two:

Referring to fig. 6, in a modification of the present invention, a screw hole nine a11 is provided in the interior of the shank at the upper portion of a main body two A7, a copper nut 5 at the shank for assembly is placed in a fixing groove 6, a washer a12 is sleeved on a locking screw a13 and screwed with the screw hole nine a11 to play a role in dust and water prevention after assembly is completed, a slide block two A1 is provided with a slide block two dovetail groove one A5 which is directly inserted and assembled in a main body two dovetail groove one A6 on a main body two A7, a main body two dovetail groove one A6 is directly provided at the lower portion of the main body two A7 and is directly assembled and slidingly assembled with a slide block two dovetail groove one A5 on the slide block two A1, one side of the main body two A7 is provided with a screw hole six A2, a headless screw four A3 and a batch of empty groove A4, wherein steel balls with diameters 6MM are respectively installed in the screw hole six A2 at the middle, steel balls are respectively contacted with the side edges of the slide block two dovetail grooves one A5 and one side of the headless screw four A3, and inner holes of the rest two sides are contacted with the side walls of the empty groove A4, in addition, screw holes seven A10 are arranged on two sides of the main body II A7, a counterweight nut A9 with a screw hole eight A8 arranged inside is screwed on two sides of the main body II A7, the screw holes seven A10 are arranged on two sides of the main body II A7 and penetrate through the whole main body II A7, the counterweight nut A9 is in threaded connection with the screw holes seven A10, a plurality of screw holes eight A8 are arranged in the counterweight nut A9, corresponding screws M6 are screwed in the screw holes eight A8, the balance nut A9 is preferentially adjusted in initial dynamic balance, the screw holes seven A10 are arranged on two sides of the main body II A7, the proper position of the balance nut A9 is selected according to specific conditions, the corresponding screws M6 assembled in the screw holes eight A8 can be increased or removed to adjust the micro weight when the dynamic balance is basically consistent, the corresponding screws M6 can be assembled into one or a plurality of the corresponding screws M6 until the dynamic balance reaches the use requirement, 3 diameter holes 20MM for assembling boring bars are arranged in the slider II A1, one side is provided with three M12 screw holes, and the inside of each screw hole is screwed with a headless screw M12 for locking the boring bar, which is used for locking the boring bar, thus forming a main dynamic balancing mechanism of the first variant pattern.

For further understanding of the operation of the variant, the following description is provided in connection with the following specific details:

In this second embodiment, referring to fig. 6, the dynamic balance tool with the boring bar assembled is placed into a dynamic balance machine, according to the tested result, the first balance nut A9 disposed in the screw holes eight A8 on both sides of the second main body A7 is adjusted as required to adjust the initial dynamic balance, when the dynamic balance is substantially consistent, the screw M6 correspondingly used in the first balance nut A9 can be selectively added or removed to adjust the micro weight, and one or more corresponding screws M6 can be installed until the dynamic balance reaches the use requirement, and the dynamic balance adjustment of the whole boring tool is completed.

Embodiment III:

Referring to fig. 7, in a second variant of the present invention, two sides of a main body three B9 are provided with holes eight B3 and Kong Jiu B4, the holes eight B3 are in sliding fit with a balance bar B1, two sides of the main body three B9 are provided with holes eight B3 as balance bar B1 sliding channels, one end of each of the holes penetrates through a main body two A7, kong Jiu B4 is in sliding fit with a transparent bar B5, one end of each of the holes corresponds to a balance bar B1 scale mark B2, the balance bar B1 moves to drive the balance bar B1 to finish through rotation of a flange dial lead screw B8, the scale mark B2 of the balance bar B1 is arranged on one side of the transparent bar, the function of data observation is facilitated, the flange dial lead screw B8 penetrates through Kong Jiu B7 to be screwed and fixed on an inner measuring flange surface for positioning through a nut B6, and the lead screw end of the flange dial 8 is screwed and the inner teeth of the balance bar B1 for connection, so as to form a main dynamic balance mechanism of the second variant.

In this third embodiment, referring to fig. 7, the dynamic balance tool with the boring bar assembled is rotated to the required size for boring, the distance D of the rotational movement is recorded, the balance bar B1 is driven by the rotating flange dial screw B8, the scale mark B2 on the balance bar B1 is observed by setting the transparent bar B5 in Kong Jiu B4, and when the reverse movement distance and the distance D are consistent, the dynamic balance adjustment of the second modification is completed.

In the above embodiment, it is noted that the technical solution of the screw rod displacement adjustment and automatic compensation dynamic balancing mechanism provided in the embodiment is that, through calculation by a computer, the specific data of the product is that the total weight of the product is 2.466KG, the weight of the product is 1.2327KG,1.2333KG and 1.2327KG respectively in the center division, when the position sizes of holes with different sizes need to be adjusted are adjusted in a balanced manner, and the sliding block 33 reaches the maximum distance 28MM, the specific data of the product is that the total weight of the product is 2.466KG, the weight of the product is 1.2327KG,1.2333KG,1.076KG, and the weight of the product is 1.39kg respectively in the center division, and the asymmetric weight of the product is 314g based on the center, compared with the old 550g or more, and the weight of the product is obviously reduced by 236g or more.

It will be appreciated by those skilled in the art that each 1g of error has a large impact on dynamic balance relative to a rotating tool, so that this tool is indeed a significant improvement in dynamic balance over the old.

The foregoing has outlined and described the basic principles, features, and advantages of the present invention with the additional names first, second, and third being used to facilitate a better understanding of the description. It will be appreciated by those skilled in the art that the present invention is not limited to the above-described embodiments, and in particular, is not limited to dynamic balance adjustment schemes, including changes or modifications to visual or visualized dynamic balance adjustment schemes made by users without dynamic balancing machines for the present embodiments. The foregoing embodiments and description illustrate only the principles of the invention and are therefore susceptible of various changes and modifications without departing from the spirit and scope of the invention, which are to be considered as falling within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An automatic compensation dynamic balance boring cutter, comprising a main body (41), characterized in that: the upper part of the main body (41) is provided with a post position matched with the lug, the post position is provided with a locking hole (40), a screw rod displacement adjusting and automatic compensating dynamic balancing mechanism (43) is arranged in the main body (41), one side of the lower part of the main body (41) is provided with a sliding block locking mechanism (45), the inside of the sliding block locking mechanism (45) is provided with a boring bar locking mechanism (44), and a first empty groove (1) is formed in the main body (41);

The sliding block locking mechanism (45) comprises a screw hole III (22), a Kong Wu (23), an insert pin (24), a hole VI (25), an inner hexagon screw I (26), a screw hole IV (27), a headless screw III (28), a groove I (29), a screw hole V (30), an inner hexagon screw II (31), a belt Kong Yaban (32) and a sliding block (33);

The screw rod displacement adjustment and automatic compensation dynamic balancing mechanism (43) comprises a first hollow groove (1), a first hole (2), a dial screw rod (3), a first bearing (4), a shank copper nut (5), a fixed groove (6), a first headless screw (7), a first screw hole (8), a second hole (9), a second bearing (10), a nut (11), an elastic piece (12), kong Qi (34), a balance rod (35), a balance rod rack (36), a gear mounting groove (37), a gear (38) and a slide block rack (39);

the boring bar locking mechanism (44) is arranged inside the sliding block (33), and the boring bar locking mechanism (44) comprises: the device comprises a step groove (13), a wafer (14), a retainer ring (15), a boring bar I (16), a hole III (17), a screw hole II (18), a hole IV (19), a headless screw II (20) and a boring bar II (21);

The first bearing (4) is arranged in the corresponding hole (2), the shank of the shank copper nut (5) is inserted and matched in the fixed groove (6) and is fixed with the headless screw (7) screwed in the first screw hole (8), the dial screw (3) penetrates through the inner hole of the first bearing (4) and the first hole (2) respectively, the shank copper nut (5) is screwed in the second bearing (10) through the second hole (9) and is locked and fixed through the nut (11) assembled in the second hole (9), the spring piece (12) is arranged between the locking nut (11) and the second bearing (10), the main body (41) is internally provided with the Kong Qi (34) and the gear mounting groove (37) respectively, the balance bar (35) and the gear (38) are correspondingly arranged outside the balance bar (35), the slide block (36) is also provided with the slide block rack (39), and the upper part and the lower part of the gear (38) are correspondingly provided with the balance bar rack (36) and the slide block rack (39) respectively;

One side of the sliding block (33) is assembled in a groove I (29) of the main body (41), the belt Kong Yaban (32) is screwed into a screw hole III (22) and a screw hole V (30) formed in the main body (41) through four socket head cap screws I (26) and four socket head cap screws II (31) and is fixedly connected, an insert needle (24) is assembled on a hole VI of the sliding block (33), the insert needle (24) is inserted and matched in a hole V (23) on the main body (41) to be positioned, a plurality of screw holes IV (27) are formed on one side of the main body (41), the headless screw III (28) is screwed into the screw holes IV (27), and one end of the headless screw III (28) is in contact with the side edge of the sliding block (33);

The inside balanced Kong Kongba (42) that is equipped with of slider (33), boring bar one (16) and boring bar two (21) cartridge hole three (17) and hole four (19) set up in slider (33), three screw two (18) that headless screw two (20) are screwed the matching set up in slider (33) one side.

2. The automatic compensation dynamic balance boring tool according to claim 1, wherein the two Kong Qi (34) are respectively arranged at two sides of the dial screw (3) with the dial screw (3) as an axis, and the balance bar (35) is arranged in the hole seven (34).

3. The automatic compensation dynamic balance boring cutter according to claim 1, wherein the modulus of the gear (38) is consistent with the modulus of the balance bar rack (36) and the sliding block rack (39), and the outer ring of the gear (38) is respectively connected with the balance bar rack (36) and the sliding block rack (39) in a meshed manner.

4. The automatic compensation dynamic balance boring tool according to claim 1, wherein the shank copper nut (5) is installed in the fixing groove (6) of the sliding block (33) and is fixed by a headless screw I (7) arranged in a screw hole I (8) outside the sliding block (33).