A direct-drive deep hole internal surface drilling and milling compound tool

Abstract

The present invention belongs to the field of mechanical manufacturing, and discloses a direct-drive deep hole internal profile drilling and milling composite tool, comprising: a tool mechanism assembly, a rotary drive mechanism assembly, and a feed drive mechanism assembly placed coaxially in sequence. The rear end of the transverse bevel gear in the tool mechanism assembly is embedded in the front port of the rotary drive shaft, and the rotary drive shaft is driven to rotate by the rotary drive mechanism assembly; the rotary drive shaft is nested in the radial outer side of the bevel feed push rod, and the feed drive mechanism assembly pushes the bevel feed push rod to reciprocate axially in the rotary drive shaft; the transverse bevel gear is meshed with the radial bevel gear at a right angle, the drilling and milling cutter head is arranged in the radial bevel gear, and the tail of the drilling and milling cutter head is connected to the bevel feed push rod. Therefore, the drilling and milling cutter head has the action functions of rotation and radial feeding at the same time, so that the tool is suitable for drilling and milling of deep hole internal profiles, and is particularly suitable for occasions with high requirements for processing accuracy and efficiency.

Description

Technical Field

[0001] The invention belongs to the field of mechanical manufacturing, and in particular relates to a direct-drive deep hole inner surface drilling and milling composite tool. Background Art

[0002] Direct-drive drilling and milling tools are advanced cutting tools that combine direct-drive technology and drilling and milling functions. Direct-drive technology enables drilling and milling tools to be linked with other axes, so that the tool posture can be adjusted more flexibly to meet the processing needs of complex curved surfaces. Direct-drive drilling and milling tools can perform both drilling and milling, and have the characteristics of one tool for multiple uses. Direct-drive drilling and milling tools are widely used in various machining fields, such as automobiles, aviation, and mold manufacturing. They are particularly suitable for machining occasions that require high precision, high efficiency, and high flexibility. Direct-drive drilling and milling tools play an important role in deep hole machining with their high precision, high efficiency, versatility, and wide applicability. However, there are currently no related products for drilling and milling of complex inner surfaces of deep holes.

[0003] The utility model with publication number CN203509721U discloses a direct-drive drilling and milling head with compact structure, small size, light weight and high precision. The utility model provides a direct-drive drilling and milling head, including a spindle, a motor rotor, a motor stator, a sliding bracket, a linear feed motor magnet, a linear feed motor stator, a main support frame, a support arm and a tool chuck; the motor rotor is directly fixed on the spindle and placed in the motor stator, the motor stator is fixed in the sliding bracket, the linear feed motor magnet is embedded on the outside of the sliding bracket, the linear feed motor stator is placed on the outside of the linear feed motor magnet, embedded in the main support frame, and the main support frame is connected to the support arm. However, it is mainly based on drilling in a limited space, and cannot realize drilling and milling at the same time, and the control accuracy is not high, and it cannot meet the processing requirements of deep hole internal surface drilling and milling. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a direct-drive deep hole inner surface drilling and milling composite tool, which is suitable for drilling and milling of deep hole inner surfaces, and is particularly suitable for occasions with high requirements on processing accuracy and efficiency.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a direct-drive deep hole inner surface drilling and milling composite tool, comprising:

[0007] A tool mechanism assembly, the tool mechanism assembly comprises a transverse bevel gear, a rotary drive shaft, a bevel feed push rod, a radial bevel gear and a drilling and milling cutter head; the rear end of the transverse bevel gear is embedded in the front port of the rotary drive shaft, the rotary drive shaft is nested in the radial outer side of the bevel feed push rod, and the bevel feed push rod reciprocates in the rotary drive shaft along the axial direction; the transverse bevel gear is meshed and connected with the radial bevel gear at a right angle; the drilling and milling cutter head is arranged in the radial bevel gear, and the tail of the drilling and milling cutter head is connected with the bevel feed push rod;

[0008] A rotary drive mechanism assembly, wherein the rotary drive mechanism assembly drives the rotary drive shaft to rotate through electromagnetic interaction;

[0009] and a feed drive mechanism assembly, wherein the feed drive mechanism assembly adopts the principle of a linear motor to drive the inclined feed push rod to reciprocate along the axial direction;

[0010] Wherein, the tool mechanism assembly, the rotation drive mechanism assembly, and the feed drive mechanism assembly are coaxially placed in sequence.

[0011] As a further improvement of the present invention, a rotating sleeve is nested in the inner hole of the radial bevel gear, a bevel feed core shaft is nested radially inside the rotating sleeve, the radial outer side of the bevel feed core shaft is connected to a feed push-pull column, and the radial outer side of the feed push-pull column is connected to a drilling and milling cutter head.

[0012] As a further improvement of the present invention, the rotating drive shaft is coaxially arranged in the tool body sleeve through a ball bearing, and a sliding guide pin is arranged at the front end of the inclined rod of the inclined feed push rod. The sliding guide pin can slide axially in the sliding guide groove arranged on the tool body sleeve, and the radial upper end of the inclined feed core shaft is nested in the guide bushing, and the guide bushing is fixed to the tool body upper cover plate by the radial shaft end cover; the radial bevel gear is supported on the inner circle side of the radial processing port of the tool body sleeve through a thrust bearing; and a guide block is arranged on the outer circle of the tool body sleeve.

[0013] As a further improvement of the present invention, the rotating drive mechanism assembly includes: a rotor core, which is nested on the outer circle of the rotating drive shaft, and a U-shaped stator core and a rectangular magnet are placed circumferentially at intervals outside the radial outer circle of the rotor core, and a rectangular winding group is surrounded on two circumferentially adjacent U-shaped stator cores and the rectangular magnet between them, and the rectangular winding group is arranged circumferentially.

[0014] As a further improvement of the present invention, a rotating outer sleeve is arranged on the radial outer side of the U-shaped stator core and the rectangular magnetic steel, the axial front end of the rotating outer sleeve is connected to the rotating drive shaft through a ball bearing, the axial rear end of the rotating outer sleeve is provided with a rotating shaft rear end cover, a rotating encoder is arranged on the inner side of the rotating shaft rear end cover, and the rotating shaft rear end cover is connected to the rotating drive shaft through a ball bearing.

[0015] As a further improvement of the present invention, the rotating outer sleeve is embedded in the rear end of the tool mechanism assembly, so that the U-shaped stator core, the rectangular surround group and the rectangular magnetic steel are fixed, and the rotor core generates torque rotation, thereby rotating the drilling and milling cutter head through the transmission chain of the rotating drive shaft, the transverse bevel gear, the radial bevel gear and the rotating sleeve in sequence.

[0016] As a further improvement of the present invention, the feed drive mechanism assembly includes: a salient pole secondary core, the salient pole secondary core is embedded in the outer circle of the inclined feed push rod, annular magnets, a primary L annular core, and a primary L annular core are arranged in sequence along the axial direction outside the radial outer circle of the salient pole secondary core, and annular windings are placed in sequence in the slot formed between one of the primary L annular cores and one of the primary L annular cores.

[0017] As a further improvement of the present invention, the radial outer surfaces of the annular magnetic steel, the primary L annular iron core and the primary L annular iron core are provided with the feed outer sleeve, the axial front end of the feed outer sleeve is connected to the inclined feed push rod via a linear bearing, the axial rear end of the feed outer sleeve is provided with a feed shaft rear end cover, and the feed shaft rear end cover is connected to the inclined feed push rod via a linear bearing; a linear grating scale is provided on the inner side of the feed shaft rear end cover.

[0018] As a further improvement of the present invention, the feed outer sleeve is connected to the rotary drive mechanism assembly through the rear end cover of the rotating shaft, so that the annular magnet, the primary L annular core, the primary L annular core and the annular winding are fixed.

[0019] As a further improvement of the present invention, a connecting rod is provided at the rear end of the rear end cover of the feed shaft.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The tool mechanism assembly, the rotary drive mechanism assembly, and the feed drive mechanism assembly of the present invention are coaxially placed in sequence. The tool mechanism assembly converts the rotary drive into the rotation and feed motion of the drilling and milling cutter head through the right-angle meshing of the bevel gear, thereby realizing the functions of drilling and milling. The rotary drive mechanism assembly drives the rotary drive shaft to rotate through electromagnetic interaction to provide power for the tool. The feed drive mechanism assembly pushes the bevel feed push rod to reciprocate along the axial direction to realize the precise feeding of the drilling and milling cutter head. The overall design structure is compact, and all mechanism components are coaxially placed, which reduces the overall volume and is suitable for the processing of deep hole inner profiles. In addition, the mechanical transmission is efficient, and the energy transmission loss is reduced through the right-angle meshing of the bevel gear and the direct drive of the linear motor, thereby improving the transmission efficiency. It can achieve precise control, and the use of the brushless DC motor and the linear motor enables the speed and feed rate to be accurately adjusted through electronic control, thereby improving the processing accuracy. Due to the use of the brushless DC motor and the linear motor, mechanical wear is reduced and the maintenance cost is reduced. The composite tool is suitable for the drilling and milling of the inner profile of the deep hole, and is particularly suitable for occasions with high requirements for processing accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are for explanation purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall axial cross-section structure of a direct-drive deep hole internal profile drilling and milling compound tool;

[0024] Figure 2 It is a schematic diagram of the transmission structure of a direct-drive deep hole internal profile drilling and milling compound tool;

[0025] Figure 3 It is a schematic diagram of the axial cross section of the cutter body mechanism of a direct-drive deep hole internal profile drilling and milling compound cutter in the initial processing position;

[0026] Figure 4 It is a schematic diagram of the axial cross section of the cutter body mechanism of a direct-drive deep hole internal profile drilling and milling compound cutter at the end processing position;

[0027] Figure 5 It is a schematic diagram of the axial cross-section structure of a rotary drive assembly of a direct-drive deep hole internal profile drilling and milling compound tool;

[0028] Figure 6 A schematic cross-sectional view of a rotary drive assembly of a direct-drive deep hole internal profile drilling and milling composite tool;

[0029] Figure 7It is a three-dimensional structural schematic diagram of a rotary drive component of a direct-drive deep hole internal profile drilling and milling compound tool;

[0030] Figure 8 It is a schematic diagram of the axial cross-section structure of a feed drive assembly of a direct-drive deep hole internal profile drilling and milling compound tool;

[0031] Fig. 9 It is a three-dimensional structural schematic diagram of a feed drive assembly of a direct-drive deep hole internal profile drilling and milling compound tool;

[0032] Fig.10 A three-dimensional schematic diagram of a direct-drive deep hole internal profile drilling and milling compound tool;

[0033] Fig.11 It is a schematic diagram of a direct-drive deep hole internal profile drilling and milling compound tool processing in a deep hole part;

[0034] Among them, 1. tool mechanism assembly; 2. rotary drive mechanism assembly; 3. feed drive mechanism assembly; 4. transverse bevel gear; 5. rotary drive shaft; 6. inclined plane feed push rod; 7. inclined plane feed mandrel; 8. feed push-pull column; 9. rotary sleeve; 10. radial bevel gear; 11. drilling and milling cutter head; 12. sliding guide pin; 13. cutter body sleeve; 14. guide block; 15. guide bushing; radial shaft end cover 16; 17. cutter body upper cover plate; 18. ball bearing; 19. thrust bearing; 20. sliding guide groove; 21. Radial processing port; 22, ball bearing; 23, U-shaped stator core; 24, rectangular surround group; 25, rectangular magnet; 26, rotor core; 27, rotating outer sleeve; 28, rotary encoder; 29, rear end cover of rotating shaft; 30, feed outer sleeve; 31, linear bearing; 32, salient pole secondary core; 33, annular magnet; 34, primary l annular core; 35, primary L annular core; 36, annular winding; 37, linear grating scale; 38, rear end cover of feed shaft; 39, connecting rod; 40, deep hole workpiece. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] like Figures 1 to 11 As shown, the present invention provides a direct-drive deep hole internal surface drilling and milling composite tool, which is mainly composed of three parts: a tool mechanism component 1, a rotation drive mechanism component 2 and a feed drive mechanism component 3. The tool mechanism component 1, the rotation drive mechanism component 2 and the feed drive mechanism component 3 are coaxially placed in sequence.

[0039] The direct-drive deep hole internal profile drilling and milling compound tool of the present invention combines the functions of drilling and milling, and is particularly suitable for processing the internal profile of a deep hole. The direct-drive deep hole internal profile drilling and milling compound tool is mainly composed of three parts: a tool mechanism component 1, a rotation drive mechanism component 2, and a feed drive mechanism component 3. These components are coaxially placed in sequence, making the overall structure compact and suitable for deep hole processing.

[0040] The working principle is: a pair of bevel gears in the tool mechanism assembly 1 mesh at right angles, and the rotary drive is converted into the rotary motion of the drilling and milling cutter head through the rotary drive mechanism assembly 2. The rotary drive mechanism assembly 2 adopts the principle of a switched flux permanent magnet linear motor to drive the rotary drive shaft to rotate through electromagnetic interaction. The feed drive mechanism assembly 3 adopts the principle of a switched flux permanent magnet linear motor to drive the inclined feed push rod to reciprocate axially to achieve precise feed motion of the drilling and milling cutter head. The rotary motion and feed motion of the drilling and milling cutter head are combined to achieve the functions of drilling and milling.

[0041] Among them, combined Figure 2 The tool mechanism assembly 1 includes: a transverse bevel gear 4, a rotary drive shaft 5, a bevel feed push rod 6, a radial bevel gear 10 and a drilling and milling cutter head 11. The rear end of the transverse bevel gear 4 is embedded in the front port of the rotary drive shaft 5. The rotary drive shaft 5 is nested in the radial outer side of the bevel feed push rod 6. The bevel feed push rod 6 can reciprocate in the axial direction of the rotary drive shaft 5.

[0042] The transverse bevel gear 4 is meshed with the radial bevel gear 10 at right angles. A rotating sleeve 9 is nested in the inner hole of the radial bevel gear 10. A bevel feed core shaft 7 is nested radially inside the rotating sleeve 9. The radial outer side of the bevel feed core shaft 7 is connected to a feed push-pull column 8. The radial outer side of the feed push-pull column 8 is connected to a drilling and milling cutter head 11.

[0043] Further optionally, if Figure 3 and Figure 4 As shown, the rotating drive shaft 5 is coaxially arranged in the tool body sleeve 13 through a ball bearing 18, and a sliding guide pin 12 is arranged at the front end of the inclined rod of the inclined feed push rod 6. The sliding guide pin 12 can slide axially in a sliding guide groove 20 arranged on the tool body sleeve 13, and the radial upper end of the inclined feed spindle 7 is nested in a guide bushing 15, and the guide bushing 15 is fixed to the tool body upper cover plate 17 by a radial shaft end cover 16; the radial bevel gear 10 is supported on the inner circle side of the radial processing port 21 of the tool body sleeve 13 through a thrust bearing 19; and a guide block 14 is arranged on the outer circle of the tool body sleeve 13.

[0044] Exemplarily, the rear end of the transverse bevel gear 4 in the tool mechanism assembly 1 is embedded in the front port of the rotary drive shaft 5, and the rotation of the transverse bevel gear 4 is driven by the rotation of the rotary drive shaft 5. The transverse bevel gear 4 is meshed at right angles with the radial bevel gear 10, so that the rotation drive of the rotating shaft can be converted into a rotational motion along the radial feed axis. The radial bevel gear 10 drives the rotating sleeve 9 to rotate, and then transmits the motion to the drilling and milling cutter head 11 through the inclined feed spindle 7 and the feed push-pull column 8, thereby realizing the rotation of the drilling and milling cutter.

[0045] Among them, Figures 5 to 7 As shown, the rotary drive mechanism assembly 2 includes: a rotor core 26 and a rotary outer sleeve 27, wherein the rotor core 26 is nested on the outer circle of the rotary drive shaft 5, and U-shaped stator cores 23 and rectangular magnetic steels 25 are placed circumferentially at intervals on the outer side of the radial outer circle of the rotor core 26, and a rectangular winding group 24 is wound around two circumferentially adjacent U-shaped stator cores 23 and the rectangular magnetic steel 25 in between, and the rectangular winding group 24 is arranged circumferentially.

[0046] Furthermore, a rotating outer sleeve 27 is arranged on the radial outer side of the U-shaped stator core 23 and the rectangular magnetic steel 25, and the axial front end of the rotating outer sleeve 27 is connected to the rotating drive shaft 5 through a ball bearing 22, and the axial rear end of the rotating outer sleeve 27 is provided with a rotating shaft rear end cover 29, and a rotating encoder 28 is arranged on the inner side of the rotating shaft rear end cover 29, and the rotating shaft rear end cover 29 is connected to the rotating drive shaft 5 through a ball bearing 22.

[0047] Switched flux permanent magnet principle of the rotary drive mechanism assembly 2: wherein the rotor core 26 is nested on the rotary drive shaft 5, and together with the U-shaped stator core 23 and the rectangular magnetic steel 25, constitutes the main part of the brushless DC motor. When the rectangular winding group 24 is energized, a magnetic field is generated, which interacts with the permanent magnet in the rotor core 26 to realize the rotation of the rotary drive shaft 5.

[0048] Among them, Figure 8 and Fig. 9 As shown, the feed drive mechanism assembly 3 includes: a salient pole secondary core 32 and a feed outer sleeve 30; the salient pole secondary core 32 is embedded in the outer circle of the inclined feed push rod 6, and an annular magnetic steel 33, a primary L annular core 34, and a primary L annular core 35 are arranged in sequence along the axial direction on the radial outer side of the salient pole secondary core 32, and an annular winding 36 is placed in sequence in the slot formed between one of the primary L annular cores 34 and the primary L annular core 35;

[0049] The feed outer sleeve 30 is arranged on the radial outer side of the annular magnetic steel 33, the primary L annular core 34 and the primary L annular core 35. The axial front end of the feed outer sleeve 30 is connected to the inclined feed push rod 6 through a linear bearing 31. The axial rear end of the feed outer sleeve 30 is provided with a feed shaft rear end cover 38. The feed shaft rear end cover 38 is connected to the inclined feed push rod 6 through a linear bearing 31; a linear grating scale 37 is arranged on the inner side of the feed shaft rear end cover 38.

[0050] As an example, the feed drive mechanism assembly 3 adopts the principle of a switched flux permanent magnet linear motor: the salient pole secondary core 32 is nested on the ramp feed push rod 6, and together with the annular magnetic steel 33, the primary l annular core 34, the primary L annular core 35 and the annular winding 36, constitutes the main part of the permanent magnet linear motor. When the annular winding 36 is energized, a magnetic field is generated, which interacts with the permanent magnet in the salient pole secondary core 32, pushing the ramp feed push rod 6 to reciprocate axially, thereby realizing the feeding of the drilling and milling cutter head 11.

[0051] like Fig.10 As shown, the rotating outer sleeve 27 is embedded in the rear end of the cutter body sleeve 13, so that the U-shaped stator core 23, the rectangular winding group 24 and the rectangular magnetic steel 25 are fixed. After a suitable current is passed through the rectangular winding group 24, a torque is generated in the rotor core 26 to rotate, thereby rotating the drilling and milling cutter head 11 through the transmission chain of the rotating drive shaft 5, the transverse bevel gear 4, the radial bevel gear 10, and the rotating sleeve 9 in sequence;

[0052] The feed outer sleeve 30 is connected to the rotating outer sleeve 27 through the rear end cover 29 of the rotating shaft, so that the annular magnet 33, the primary L annular core 34, the primary L annular core 35, and the annular winding 36 are fixed. After a suitable current is passed through the annular winding 36, an axial thrust is generated in the salient pole secondary core 32, thereby causing the drilling and milling cutter head 11 to be radially fed through the transmission chain of the inclined feed push rod 6, the inclined feed core shaft 7, the feed push-pull column 8, and the rotating sleeve 9 in sequence.

[0053] like Fig.11 As shown, the outer diameters of the tool body sleeve 13, the rotating outer sleeve 27, and the feed outer sleeve 30 are the same and are set according to the inner diameter of the deep hole workpiece 40. When the present invention is in use, the direct-drive deep hole inner surface drilling and milling composite tool enters the deep hole workpiece 40 and the corresponding drilling, milling, keyway processing and other processes are completed by the rotation and radial feed motion of the drilling and milling cutter head 11.

[0054] Optionally, a connecting rod 39 is provided at the rear end of the feed shaft rear end cover 38 to increase the machinable travel range of the direct-drive deep hole internal profile drilling and milling composite tool.

[0055] Therefore, the advantages of the direct-drive deep hole internal profile drilling and milling composite tool of the present invention are as follows:

[0056] 1. High efficiency: Through optimized transmission structure and efficient direct drive, this composite tool can achieve efficient drilling and milling processing.

[0057] 2. Accuracy: The precise control of the switched flux permanent magnet motor and permanent magnet linear motor ensures the processing accuracy and stability.

[0058] 3. Durability: The use of high-strength materials and advanced design concepts makes the tool have good durability and service life.

[0059] 4. Wide applicability: This composite tool is suitable for processing various deep hole internal surfaces and has wide applicability.

[0060] Therefore, the direct-drive deep hole inner surface drilling and milling compound tool can efficiently complete the processing task of complex inner surfaces, improve production efficiency and processing quality, and is suitable for various deep hole inner surface processing needs.

[0061] Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a disclaimer of such subject matter, nor should it be considered that the applicants did not consider such subject matter to be part of the disclosed inventive subject matter.

Claims

1. A direct-drive deep hole internal profile drilling and milling composite tool, characterized in that: include: A tool mechanism assembly (1), the tool mechanism assembly (1) comprising a transverse bevel gear (4), a rotary drive shaft (5), a bevel feed push rod (6), a radial bevel gear (10) and a drilling and milling cutter head (11); the rear end of the transverse bevel gear (4) is embedded in the front end of the rotary drive shaft (5), the rotary drive shaft (5) is nested in the radial outer side of the bevel feed push rod (6), and the bevel feed push rod (6) is fed back and forth axially in the rotary drive shaft (5); the transverse bevel gear (4) is meshed with the radial bevel gear (10) at right angles; the drilling and milling cutter head (11) is arranged in the radial bevel gear (10), and the rear end of the drilling and milling cutter head (11) is connected to the bevel feed push rod (6); A rotary drive mechanism assembly (2), wherein the rotary drive mechanism assembly (2) drives the rotary drive shaft (5) to rotate through electromagnetic interaction; and a feed drive mechanism assembly (3), wherein the feed drive mechanism assembly (3) adopts the principle of a linear motor to drive the inclined feed push rod (6) to reciprocate along the axial direction; Wherein, the tool mechanism assembly (1), the rotation drive mechanism assembly (2), and the feed drive mechanism assembly (3) are coaxially arranged in sequence; A rotating sleeve (9) is nested in the inner hole of the radial bevel gear (10), a bevel feed core shaft (7) is nested in the radial inner side of the rotating sleeve (9), the radial outer side of the bevel feed core shaft (7) is connected to a feed push-pull column (8), and the radial outer side of the feed push-pull column (8) is connected to a drilling and milling cutter head (11); The rotating drive shaft (5) is coaxially arranged in the cutter body sleeve (13) through a ball bearing, and a sliding guide pin (12) is provided at the front end of the inclined rod of the inclined feed push rod (6). The sliding guide pin (12) can slide axially in a sliding guide groove (20) provided on the cutter body sleeve (13). The radial upper end of the inclined feed core shaft (7) is nested in a guide bushing (15), and the guide bushing (15) is fixed to the cutter body upper cover plate (17) by a radial shaft end cover (16); the radial bevel gear (10) is supported on the inner circle side of the radial processing port (21) of the cutter body sleeve (13) through a thrust bearing (19); and a guide block (14) is provided on the outer circle of the cutter body sleeve (13).

2. A direct-drive deep hole internal profile drilling and milling composite tool according to claim 1, characterized in that: The rotary drive mechanism assembly (2) comprises: a rotor core (26), wherein the rotor core (26) is nested on the outer circle of the rotary drive shaft (5), and a U-shaped stator core (23) and a rectangular magnetic steel (25) are placed circumferentially at intervals outside the radial outer circle of the rotor core (26), and a rectangular surrounding group (24) is surrounded by two circumferentially adjacent U-shaped stator cores (23) and the rectangular magnetic steel (25) therebetween, and the rectangular surrounding group (24) is arranged circumferentially.

3. A direct-drive deep hole internal profile drilling and milling composite tool according to claim 2, characterized in that: A rotating outer sleeve (27) is provided on the radial outer side of the U-shaped stator core (23) and the rectangular magnetic steel (25), the axial front end of the rotating outer sleeve (27) is connected to the rotating drive shaft (5) through a ball bearing, and the axial rear end of the rotating outer sleeve (27) is provided with a rotating shaft rear end cover (29), the inner side of the rotating shaft rear end cover (29) is provided with a rotary encoder (28), and the rotating shaft rear end cover (29) is connected to the rotating drive shaft (5) through a ball bearing.

4. A direct-drive deep hole internal profile drilling and milling composite tool according to claim 3, characterized in that: The rotating outer sleeve (27) is embedded in the rear end of the tool mechanism assembly (1), thereby fixing the U-shaped stator core (23), the rectangular surround group (24) and the rectangular magnetic steel (25), and the rotor core (26) generates torque rotation, thereby rotating the drilling and milling cutter head (11) through the transmission chain of the rotating drive shaft (5), the transverse bevel gear (4), the radial bevel gear (10), and the rotating sleeve (9).

5. The direct-drive deep hole internal profile drilling and milling composite tool according to claim 1, characterized in that: The feed drive mechanism assembly (3) comprises: a salient pole secondary core (32), the salient pole secondary core (32) being nested on the outer circle of the inclined feed push rod (6), an annular magnetic steel (33), a primary L annular core (34), and a primary L annular core (35) being sequentially arranged along the axial direction on the radial outer side of the salient pole secondary core (32), and an annular winding (36) being sequentially arranged in a slot formed between one of the primary L annular cores (34) and a primary L annular core (35).

6. A direct-drive deep hole internal profile drilling and milling composite tool according to claim 5, characterized in that: A feed outer sleeve (30) is provided on the radial outer surface of the annular magnetic steel (33), the primary L annular iron core (34) and the primary L annular iron core (35); the axial front end of the feed outer sleeve (30) is connected to the inclined feed push rod (6) through a linear bearing (31); the axial rear end of the feed outer sleeve (30) is provided with a feed shaft rear end cover (38); the feed shaft rear end cover (38) is connected to the inclined feed push rod (6) through a linear bearing (31); a linear grating ruler (37) is provided on the inner side of the feed shaft rear end cover (38).

7. A direct-drive deep hole internal profile drilling and milling composite tool according to claim 6, characterized in that: The feed outer sleeve (30) is connected to the rotary drive mechanism assembly (2) via the rear end cover (29) of the rotary shaft, thereby fixing the annular magnetic steel (33), the primary L annular core (34), the primary L annular core (35) and the annular winding (36).

8. The direct-drive deep hole internal profile drilling and milling composite tool according to claim 6, characterized in that: A connecting rod (39) is provided at the rear end of the feed shaft rear end cover (38).

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