High-efficiency and high-quality finish machining tool combination device for square cavity

Abstract

The utility model provides an efficient and high-quality finish machining tool combination device for a square cavity, and belongs to the technical field of machining devices. An intermediate shaft assembly is rotationally supported in the shell; the middle shaft assembly is sequentially provided with a hole boring cutter and transmission device, a left-right cutter head and transmission device and an upper-lower cutter head and transmission device from left to right. Four groups of boring cutters are arranged on the boring cutter and transmission device, correspond to the four corners of the shell respectively, are arranged outside the shell and are used for machining the four corners in the square cavity of the workpiece; two groups of cutterheads are arranged on the left and right cutterheads and the transmission device, correspond to the left and right side surfaces of the shell respectively, are arranged outside the shell and are used for machining the left and right side surfaces in the square cavity of the workpiece; two groups of cutter heads are arranged on the upper and lower cutter heads and the transmission device, correspond to the upper and lower side surfaces of the shell respectively, are arranged outside the shell and are used for machining the upper and lower side surfaces in the square cavity of the workpiece. According to the utility model, a square cavity of a large workpiece is clamped on a common machine tool once to finish the finish machining in the cavity, so that the machining efficiency is greatly improved, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining equipment, and in particular relates to a high-efficiency and high-quality finishing tool assembly device for a square cavity. Background Art

[0002] In recent years, we have undertaken batch processing of various types of forming cylinder parts. The material is 3D-printed stainless steel, and the overall material is extremely hard. The cutting depth can only be around 0.5mm each time, which makes processing very slow and inefficient. The machining requirements for the inner cavity of the forming cylinder are very high. No cutting is allowed. The surface roughness must be ≤1.6 and the flatness must be ≤0.1. Because the cylinder depth exceeds the processing range of ordinary tool bars, more expensive damping tool bars were purchased for trial processing. However, due to the large number of damping tool bars configured for different forming cylinder depths, the cost was too high. The processing efficiency can only be improved by 20%, which cannot meet customer delivery requirements. Therefore, in order to save costs and improve processing efficiency, it is necessary to modify the existing 61125 ordinary horizontal lathe. The existing lathe tool holder, center bracket, and tailstock are removed, and a tool assembly device suitable for one-time finishing of square cavity components such as forming cylinders is designed and installed to achieve the goal of improving work efficiency and meeting processing requirements. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a square cavity high-efficiency and high-quality finishing tool combination device. The purpose of the utility model is to realize the finishing of the square cavity of a large workpiece by one-time clamping on an ordinary machine tool through the design of a combined tool device combined with an ordinary machine tool, thereby realizing the assembly line operation of large parts, greatly improving the processing efficiency, and ensuring that the production tasks are completed on schedule.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by this utility model is:

[0005] A high-efficiency and high-quality finishing tool combination device for square cavities comprises a shell, wherein an intermediate shaft assembly is rotatably supported inside the shell, and the axis of the intermediate shaft assembly is arranged along the length direction of the shell; a boring tool and a transmission device, a left and right cutter disc and a transmission device, and an upper and lower cutter disc and a transmission device are arranged on the intermediate shaft assembly from left to right in sequence; the boring tool and the transmission device are provided with four groups of boring tools, which are respectively placed outside the shell corresponding to the four corners of the shell, and are used to process the four corners in the square cavity of the workpiece; the left and right cutter discs and the transmission device are provided with two groups of cutter discs, which are respectively placed outside the shell corresponding to the left and right side surfaces of the shell, and are used to process the left and right side surfaces of the square cavity of the workpiece; the upper and lower cutter discs and the transmission device are provided with two groups of cutter discs, which are respectively placed outside the shell corresponding to the upper and lower side surfaces of the shell, and are used to process the upper and lower side surfaces of the square cavity of the workpiece.

[0006] Further defining the above solution, the housing is provided with a boring tool mounting hole, a left and right cutter disc mounting hole, and an upper and lower cutter disc mounting hole corresponding to the mounting positions of the boring tool and the transmission device, the left and right cutter discs and the transmission device, and the upper and lower cutter discs and the transmission device, in sequence from left to right along the length direction. The boring tool mounting holes are provided with four holes and are distributed at the four corners of the housing. The two ends of the left and right cutter disc mounting holes correspond to the left and right side surfaces of the housing, and the two ends of the upper and lower cutter disc mounting holes correspond to the upper and lower side surfaces of the housing.

[0007] Both ends of the shell are detachably fixedly connected with brackets, and the brackets are used to connect with the guide rails on the machine tool equipment; both end surfaces of the shell are provided with lifting rings, and the lifting rings do not exceed the left and right and upper and lower surfaces of the shell.

[0008] Further limiting the above solution, the boring tool and transmission device includes a boring tool main drive spur gear and four sets of boring tool transmission assemblies, the boring tool main drive spur gear is fixed to the intermediate shaft assembly, and the four sets of boring tool transmission assemblies are installed corresponding to the four boring tool mounting holes;

[0009] Each group of the boring tool transmission assembly includes a boring tool bearing seat, a boring tool bearing pressure cover, a boring tool transmission shaft I, a boring tool transmission shaft II, a boring tool transmission shaft III, a boring tool transmission spur gear I, a boring tool transmission spur gear II, a boring tool transmission spur gear III and a boring tool assembly; the boring tool bearing seat is fixed in the corresponding boring tool mounting hole, and the boring tool bearing seat port is covered by the boring tool bearing pressure cover;

[0010] The boring cutter transmission shaft I is supported in the boring cutter bearing seat through the transmission shaft support bearing I, and the boring cutter transmission spur gear I is fixedly connected to the boring cutter transmission shaft I through the spur gear spacer I and the spur gear flat key I;

[0011] The boring cutter transmission shaft II is supported in the boring cutter bearing seat through the transmission shaft support bearing II, and the boring cutter transmission shaft II is fixedly connected to the boring cutter transmission spur gear II through the spur gear spacer II and the spur gear flat key II;

[0012] The boring cutter transmission shaft III is supported in the boring cutter bearing seat through the transmission shaft support bearing III, and the boring cutter transmission spur gear III is fixedly connected to the boring cutter transmission shaft III through the spur gear spacer III and the spur gear flat key III;

[0013] The boring cutter drive shaft I, boring cutter drive shaft II, and boring cutter drive shaft III are all parallel to the axis of the intermediate shaft assembly. The boring cutter drive spur gear I is meshed with the boring cutter main drive spur gear. The boring cutter drive spur gear I is meshed with the boring cutter drive spur gear II. The boring cutter drive spur gear II is meshed with the boring cutter drive spur gear III. A boring cutter assembly is fixed to one end of the boring cutter drive shaft III.

[0014] The boring cutter bearing seat and the boring cutter transmission shaft III are sealed by a sealing ring, and the boring cutter bearing seat is positioned and fixed by a boring cutter bearing seat fixing bolt and a boring cutter bearing seat locating pin.

[0015] To further define the above scheme, the boring tool assembly includes a boring head body and two boring blades, the two boring blades are symmetrically installed on both sides of the boring head body at 180°, a boring head seat is fixed on one side of the boring head body, the boring head seat is pressed onto the boring head body by obliquely installed boring head seat bolts, one of the boring blades is fixed to the boring head seat by a boring blade screw, and the other boring blade is directly fixed to the other side of the boring head body by a boring blade screw, and the boring head body is provided with a fine-tuning top screw for fine-tuning the boring head seat.

[0016] Further limiting the above solution, the left and right cutter discs and transmission device include left and right cutter disc bearing frames, left and right cutter disc main drive bevel gears and two left and right cutter disc transmission assemblies;

[0017] The left and right cutter disc bearing frames are fixed in the left and right cutter disc mounting holes, the left and right cutter disc main drive bevel gears are fixed on the intermediate shaft assembly, and the left and right sets of the cutter disc drive assemblies are respectively installed on the left and right sides of the left and right cutter disc bearing frames;

[0018] Each set of the cutter disc transmission assembly includes a cutter disc transmission bevel gear and a cutter disc component. The shaft of the cutter disc component is supported in the left and right cutter disc bearing frames through the cutter disc mounting bearings. The axis of the cutter disc component is perpendicular to the axis of the intermediate shaft assembly. The cutter disc transmission bevel gear is fixed to the inner end of the shaft of the cutter disc component through the bevel gear square key. The two ends of the cutter disc component are respectively fixed by the cutter disc bearing end cover and the cutter disc bearing pressure cover; the cutter disc of the cutter disc component is located outside the corresponding ends of the left and right cutter disc mounting holes; the cutter disc transmission bevel gear is meshed with the left and right cutter disc main transmission bevel gears.

[0019] To further limit the above scheme, the cutter disc component includes a cutter disc body, and a plurality of positive blade seat assemblies are evenly distributed on the circumference of the cutter disc body; each positive blade seat assembly includes a positive blade seat, and the positive blade seat is obliquely pressed on the cutter disc body by a positive blade seat fixing bolt, and the positive blade seat is provided with left and right positive blade seat fine-tuning screws for left and right fine-tuning and up and down positive blade seat fine-tuning screws for up and down fine-tuning, and a positive blade is fixed on the positive blade seat by a blade screw.

[0020] Further limiting the above solution, the upper and lower cutter discs and transmission device include upper and lower side cutter disc bearing frames, upper and lower cutter disc main drive bevel gears, upper and lower cutter disc shafts, upper cutter disc components and lower cutter disc components;

[0021] The upper and lower cutter disc main transmission bevel gears are fixed on the intermediate shaft assembly; the upper and lower side cutter disc bearing frames are fixed in the upper and lower cutter disc mounting holes, and the upper and lower cutter disc shafts are supported in the upper and lower side cutter disc bearing frames through the upper and lower cutter disc shaft mounting bearings, and one end of the upper and lower side cutter disc bearing frames is pressed by the upper and lower cutter disc bearing pressure covers; the upper and lower cutter disc transmission bevel gears are fixed on the upper and lower cutter disc shafts through the upper and lower cutter disc bevel gear square keys, and the upper and lower cutter disc transmission bevel gears are positioned by bushings, and the upper and lower cutter disc transmission bevel gears are meshed with the upper and lower cutter disc main transmission bevel gears; the upper cutter disc component and the lower cutter disc component are respectively fixed to the two ends of the upper and lower cutter disc shafts by bolts and pins and are placed outside the two ends of the upper and lower cutter disc mounting holes.

[0022] Further limiting the above solution, the upper cutter disc component includes an upper cutter disc body, and a plurality of upper positive cutter seat assemblies are evenly distributed on the circumference of the upper cutter disc body;

[0023] Each of the upper positive knife seat components includes an upper positive knife seat, which is obliquely pressed onto the upper cutter disc body by an upper positive knife seat fixing bolt, and is provided with an upper positive knife seat left and right fine-tuning screw for left and right fine-tuning and an upper positive knife seat up and down fine-tuning screw for up and down fine-tuning, and an upper positive blade is fixed to the upper positive knife seat by an upper blade screw;

[0024] The lower cutter disc component comprises a lower cutter disc body, and a plurality of lower reverse cutter seat assemblies are evenly distributed on the circumference of the lower cutter disc body;

[0025] Each of the lower reverse knife seat components includes a lower reverse knife seat, which is obliquely pressed onto the lower knife disc body through a lower reverse knife seat fixing bolt. The lower reverse knife seat is provided with a lower reverse knife seat left and right fine-tuning screw for left and right fine-tuning and a lower reverse knife seat up and down fine-tuning screw for up and down fine-tuning. A lower reverse blade is fixed to the lower reverse knife seat through a lower blade screw.

[0026] In a further definition of the above solution, the intermediate shaft assembly includes an intermediate shaft, an end bearing seat, and a middle bearing seat, wherein the end bearing seat is fixed inside the left end of the housing, and the middle bearing seat is fixed in the bearing seat mounting groove in the middle of the housing; the left end of the intermediate shaft is supported in the end bearing seat by the intermediate shaft left bearing, and the end bearing seat port is pressed by the end bearing pressure cover; the right end of the intermediate shaft is supported in the middle bearing seat by the intermediate shaft right bearing, and the upper opening of the middle bearing seat is pressed by the middle bearing upper cover;

[0027] The intermediate shaft is provided with a boring cutter main drive spur gear, left and right cutter disc main drive bevel gears, and upper and lower cutter disc main drive bevel gears for respectively driving the boring cutter and transmission device, the left and right cutter discs and transmission device, and the upper and lower cutter discs and transmission device; the boring cutter main drive spur gear is fixed to the intermediate shaft by a toothed sleeve external thread, a round nut, a stop washer, and a square key I; the left and right cutter disc main drive bevel gears are fixed to the intermediate shaft by a square key II and are limited by a shoulder and an intermediate spacer sleeve; the upper and lower cutter disc main drive bevel gears are fixed to the end of the intermediate shaft by a square key III and are limited by a shaft head pressure plate and a shaft shoulder.

[0028] The two rear panels are symmetrically fixed to the upper and lower edges of the external tooling base plate, and the two external tooling reinforcement plates are fixed perpendicularly to the left and right edges of the upper surface of the external tooling base plate; the upper and lower ends of the external tooling rear panel are provided with sockets, and the four corners of the external tooling rear panel are provided with plug blocks, and the plug blocks are correspondingly inserted into the sockets, and the upper and lower parts of the external tooling rear panel are screwed with tightening screws corresponding to the sockets, and the tightening screws tighten the plug blocks inserted into the sockets, and an anti-pressure pad is separated from the tightening screws and the plug blocks;

[0029] The external tooling front vertical plate and the external tooling rear plate are both provided with holes that are adapted to the shape of the cavity port of the workpiece; the external tooling front vertical plate is arranged with bolt holes corresponding to the bolt through-hole positions on the workpiece connection surface, and a front tensioning plate is set at the back connection of the workpiece connection surface during installation, and the external tooling front vertical plate, the front of the workpiece and the front tensioning plate are connected by front tensioning bolts and front positioning pins; the external tooling rear plate is arranged with bolt holes corresponding to the bolt through-hole positions on the workpiece connection surface, and a rear tensioning plate is set at the back connection of the workpiece connection surface during installation, and the external tooling rear plate, the rear of the workpiece and the rear tensioning plate are connected by rear tensioning bolts and rear positioning pins.

[0030] The advantages of this utility model compared with the prior art are:

[0031] 1. When using this solution, the shell is installed on the Z guide rail of the equipment, and the workpiece is installed on the X-axis center support plate of the equipment through the tooling. The tooling is controlled by the center support plate of the equipment and drives the workpiece to move, so that the square cavity of the workpiece passes through the tool assembly device. The workpiece passes through the upper and lower cutter heads and transmission devices on the tool assembly device to perform fine processing on the upper and lower surfaces of the square cavity of the workpiece, the left and right cutter heads and transmission devices to perform fine processing on the left and right sides of the square cavity of the workpiece, and the boring tool and transmission device to perform fine processing on the four corners of the square cavity of the workpiece, thereby achieving the completion of the fine processing of the square cavity of the large workpiece on the ordinary machine tool in one clamping. It also realizes the flow operation of large parts, greatly improves the processing efficiency, and ensures that the production tasks are completed on schedule;

[0032] 2. In this solution, the main power is provided by the lathe. The tool assembly device is designed in combination with the structural characteristics of the lathe to ensure that the tool assembly device can be effectively combined with the lathe structure. It can complete the processing of square cavity workpieces of different models and avoid the use of expensive damping tool rod devices to complete the processing of workpieces. It has a wide range of uses, is very simple to operate, and has high job adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The three-dimensional structure diagram of the overall device of the utility model Figure 1 ;

[0034] Figure 2 The three-dimensional structure diagram of the overall device of the utility model Figure 2 ;

[0035] Figure 3 This is a main structural diagram of the overall device of the utility model;

[0036] Figure 4 This is a top view of the overall structure of the utility model;

[0037] Figure 5 The three-dimensional structure diagram of the boring tool and transmission device in this utility model Figure 1 ;

[0038] Figure 6 The three-dimensional structure diagram of the boring tool and transmission device in this utility model Figure 2 ;

[0039] Figure 7 This is a main structural diagram of the boring tool and the transmission device in the utility model;

[0040] Figure 8 This is a front view of the internal structure of the boring tool and the transmission device in the utility model;

[0041] Figure 9 For this utility model Figure 7 AA structural cross-sectional view;

[0042] Figure 10 This is a schematic diagram of the internal three-dimensional structure of the boring tool and the transmission device in the utility model;

[0043] Figure 11 The three-dimensional structure diagram of the boring tool assembly in this utility model Figure 1 ;

[0044] Figure 12 The three-dimensional structure diagram of the boring tool assembly in this utility model Figure 2 ;

[0045] Figure 13 This is a main structural diagram of the boring tool assembly of the utility model;

[0046] Figure 14 For this utility model Figure 13 BB structural cross-sectional view;

[0047] Figure 15 The three-dimensional structure diagram of the left and right cutter discs and the transmission device in this utility model Figure 1 ;

[0048] Figure 16 The three-dimensional structure diagram of the left and right cutter discs and the transmission device in this utility model Figure 2 ;

[0049] Figure 17 This is a front view structural diagram of the left and right cutter discs and the transmission device in the present utility model;

[0050] Figure 18 For this utility model Figure 17 CC structural cross-sectional view;

[0051] Figure 19 This is a schematic diagram of the three-dimensional structure of the cutter head component in the present utility model;

[0052] Figure 20 This is a main structural diagram of the cutter head component in the present utility model;

[0053] Figure 21 For this utility model Figure 20 DD structural cross-sectional view;

[0054] Figure 22 This is a schematic diagram of the three-dimensional structure of the positive knife seat assembly on the cutter head component of the present invention;

[0055] Figure 23 This is a main structural diagram of the positive tool holder assembly of the utility model;

[0056] Figure 24 For this utility model Figure 23 EE structural cross-sectional view;

[0057] Figure 25 For this utility model Figure 23 FF structural cross-sectional view;

[0058] Figure 26 The three-dimensional structure diagram of the upper and lower cutter discs and the transmission device in this utility model Figure 1 ;

[0059] Figure 27 The three-dimensional structure diagram of the upper and lower cutter discs and the transmission device in this utility model Figure 2 ;

[0060] Figure 28 This is a main structural diagram of the upper and lower cutter discs and the transmission device in the utility model;

[0061] Figure 29 This is a cross-sectional view of the internal structure of the upper and lower cutter discs and the transmission device in the present utility model;

[0062] Figure 30 This is a schematic diagram of the three-dimensional structure of the upper cutter disc component of the utility model;

[0063] Figure 31 This is a schematic diagram of the three-dimensional structure of the upper positive knife seat assembly in the utility model;

[0064] Figure 32 This is a main structural diagram of the upper positive tool holder assembly of the utility model;

[0065] Figure 33 For this utility model Figure 32 The GG structural cross-sectional view;

[0066] Figure 34 For this utility model Figure 32 HH structural cross-sectional view;

[0067] Figure 35 This is a schematic diagram of the three-dimensional structure of the lower cutter disc component of the utility model;

[0068] Figure 36 This is a schematic diagram of the three-dimensional structure of the lower reverse tool holder assembly of the utility model;

[0069] Figure 37 This is a front structural diagram of the lower reverse tool holder assembly of the utility model;

[0070] Figure 38 For this utility model Figure 37 The II-direction structural cross-sectional view;

[0071] Figure 39 For this utility model Figure 37 The JJ structural cross-sectional view;

[0072] Figure 40 This is a schematic diagram of the three-dimensional external structure of the shell in the present utility model;

[0073] Figure 41 This is the main view of the housing in the utility model;

[0074] Figure 42 For this utility model Figure 41 A schematic diagram of the intermediate shaft assembly structure shown in the KK direction;

[0075] Figure 43 This is a schematic diagram of the three-dimensional structure of the intermediate shaft assembly in the present utility model;

[0076] Figure 44 This is a main structural diagram of the intermediate shaft assembly in the present utility model;

[0077] Figure 45 It is a cross-sectional view of the intermediate shaft assembly in the present utility model;

[0078] Figure 46 This is a schematic diagram of the three-dimensional structure of the external mobile tooling in this utility model Figure 1 ;

[0079] Figure 47 This is a schematic diagram of the three-dimensional structure of the external mobile tooling in this utility model Figure 2 ;

[0080] Figure 48 This is the main structural diagram of the external mobile tooling in the utility model;

[0081] Figure 49 This is a left-side structural diagram of the external mobile tooling in the present utility model;

[0082] Figure 50 This is a right side structural diagram of the external mobile tooling in the present utility model;

[0083] Figure 51 This is a top view of the external mobile tooling in the utility model. DETAILED DESCRIPTION

[0084] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0085] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0086] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0087] See also Figure 1-51 , describe in detail the embodiments of the present utility model.

[0088] Example: Square cavity high-efficiency and high-quality finishing tool assembly device, see Figure 1-4 As shown, it includes a housing 1, which is an elongated housing structure with a square cross section;

[0089] An intermediate shaft assembly 2 is rotatably supported inside the housing 1, and the axis of the intermediate shaft assembly 2 is arranged along the length direction of the housing 1;

[0090] The intermediate shaft assembly 2 is provided with a boring tool and transmission device 3, left and right cutter discs and transmission device 4, and upper and lower cutter discs and transmission device 5 from left to right; the boring tool and transmission device 3 is provided with four groups of boring tools and are respectively placed outside the shell 1 corresponding to the four corners of the shell 1, for processing the four corners in the square cavity of the workpiece 9; the left and right cutter discs and transmission device 4 are provided with two groups of cutter discs and are respectively placed outside the shell 1 corresponding to the left and right side surfaces of the shell 1, for processing the left and right side surfaces in the square cavity of the workpiece 9; the upper and lower cutter discs and transmission device 5 are provided with two groups of cutter discs and are respectively placed outside the shell 1 corresponding to the upper and lower side surfaces of the shell 1, for processing the upper and lower side surfaces in the square cavity of the workpiece 9.

[0091] In the above structure: the shell 1 is installed on the Z guide rail of the equipment. The workpiece 9 is installed on the X-axis center plate of the equipment through the tooling, and the tooling is controlled by the center plate of the equipment to drive the workpiece to move, so that the square cavity of the workpiece passes through the tool combination device. The workpiece passes through the upper and lower cutter heads and the transmission device 5 on the tool combination device in turn to perform fine processing on the upper and lower surfaces of the square cavity of the workpiece, the left and right cutter heads and the transmission device 4 perform fine processing on the left and right sides of the square cavity of the workpiece, and the boring tool and the transmission device 3 perform fine processing on the four corners of the square cavity of the workpiece, thereby realizing the square cavity of a large workpiece to be clamped and completed in one clamping on an ordinary machine tool (the fine processing amount on one side is ≤0.5mm), and also realizing the flow operation of large parts, greatly improving the processing efficiency, and the production tasks can also be completed on schedule. Among them, the main power of the combined tool is given by the lathe, the operation is very simple, and the job adaptability is high.

[0092] At the same time, the entire equipment is lubricated with grease through a straight-through pressure-injection oil cup M10×1. When the workpiece 9 is replaced, the shell 1 needs to be hoisted out of the equipment as a whole to replace the product and then hoisted back onto the equipment as a whole.

[0093] In a specific embodiment: see Figure 40 As shown, the shell 1 is provided with a boring tool mounting hole 1-1, a left and right cutter disc mounting hole 1-2, and an upper and lower cutter disc mounting hole 1-3 corresponding to the mounting positions of the boring tool and transmission device 3, the left and right cutter discs and transmission device 4, and the upper and lower cutter discs and transmission device 5 in sequence along the length direction from left to right. The boring tool mounting holes 1-1 are provided with four and are distributed at the four corners of the shell 1. The two ends of the left and right cutter disc mounting holes 1-2 correspond to the left and right side surfaces of the shell 1, and the two ends of the upper and lower cutter disc mounting holes 1-3 correspond to the upper and lower side surfaces of the shell 1.

[0094] Brackets 6 are removably fixedly attached to both ends of the housing 1, which are used to connect to the guide rails on the machine tool. Lifting rings 7 are provided on both ends of the housing 1, allowing the housing 1 to be assembled and disassembled as a whole using four M20 lifting rings. Furthermore, in this embodiment, the lifting rings 7 do not extend beyond the left, right, upper, and lower surfaces of the housing 1, facilitating the insertion and removal of workpieces and tooling from the tool assembly, facilitating ease of operation.

[0095] In a specific embodiment: see Figure 5-10 As shown, the boring tool and transmission device 3 includes a boring tool main transmission spur gear 3-1 and four sets of boring tool transmission assemblies. The boring tool main transmission spur gear 3-1 is fixed on the intermediate shaft assembly 2, and the four sets of boring tool transmission assemblies are installed corresponding to the four boring tool mounting holes 1-1.

[0096] Each group of the boring tool transmission assembly includes a boring tool bearing seat 3-2, a boring tool bearing pressure cover 3-3, a boring tool transmission shaft I 3-4, a boring tool transmission shaft II 3-9, a boring tool transmission shaft III 3-14, a boring tool transmission spur gear I 3-5, a boring tool transmission spur gear II 3-13, a boring tool transmission spur gear III 3-15 and a boring tool assembly 3-20; the boring tool bearing seat 3-2 is fixed in the corresponding boring tool mounting hole 1-1, and the port of the boring tool bearing seat 3-2 is covered by the boring tool bearing pressure cover 3-3;

[0097] The boring cutter transmission shaft I3-4 is supported in the boring cutter bearing seat 3-2 through the transmission shaft support bearing I3-7, and the boring cutter transmission shaft I3-4 is fixedly connected to the boring cutter transmission spur gear I3-5 through the spur gear spacer I3-6 and the spur gear flat key I3-8;

[0098] The boring cutter transmission shaft II 3-9 is supported in the boring cutter bearing seat 3-2 through the transmission shaft support bearing II 3-10, and the boring cutter transmission shaft II 3-9 is fixedly connected to the boring cutter transmission spur gear II 3-13 through the spur gear spacer II 3-11 and the spur gear flat key II 3-12;

[0099] The boring cutter transmission shaft III3-14 is supported in the boring cutter bearing seat 3-2 through the transmission shaft support bearing III3-16, and the boring cutter transmission shaft III3-14 is fixedly connected to the boring cutter transmission spur gear III3-15 through the spur gear spacer III3-17 and the spur gear flat key III3-18;

[0100] The boring cutter drive shaft I3-4, the boring cutter drive shaft II3-9, and the boring cutter drive shaft III3-14 are all parallel to the axis of the intermediate shaft assembly 2, the boring cutter drive spur gear I3-5 is meshed with the boring cutter main drive spur gear 3-1, the boring cutter drive spur gear I3-5 is meshed with the boring cutter drive spur gear II3-13, the boring cutter drive spur gear II3-13 is meshed with the boring cutter drive spur gear III3-15, and a boring cutter assembly 3-20 is fixed on one end of the boring cutter drive shaft III3-14;

[0101] The boring tool bearing seat 3-2 and the boring tool transmission shaft III 3-14 are sealed by a sealing ring, and the boring tool bearing seat 3-2 is positioned and fixed by a boring tool bearing seat fixing bolt 3-19 and a boring tool bearing seat locating pin 3-21.

[0102] In this embodiment, in response to the processing requirements of the four corners of the inner cavity of the forming cylinder, a Φ40mm boring tool is used, and the intermediate shaft assembly 2 drives the boring tool main transmission spur gear 3-1 with M=2, Z=94 to rotate, and the boring tool main transmission spur gear 3-1 drives the boring tool transmission spur gear I3-5 with M=2, Z=30 in each group of boring tool transmission assemblies to rotate, and the boring tool transmission spur gear I3-5 drives the boring tool transmission spur gear II3-13 with M=2, Z=30 to engage, and the boring tool transmission spur gear II3-13 drives the boring tool transmission spur gear III3-15 with M=2, Z=15 to rotate, and the boring tool transmission spur gear III3-15 drives the boring tool transmission shaft III3-14 to rotate, and the boring tool transmission shaft III3-14 drives The boring tool assembly 3-20 rotates, thereby realizing tool cutting processing.

[0103] This set of components is fixed to the housing 1 through the boring cutter bearing seat, the boring cutter bearing cover, the hexagonal bolt, and the positioning pin. Each spur gear is fixed with a tapered roller bearing, a spacer, and a flat key to achieve flexible rotation without displacement or jamming.

[0104] Among them: See Figure 11-14 As shown, the boring tool assembly 3-20 includes a boring head body 3-20-1 and two boring blades 3-20-3, the two boring blades 3-20-3 are symmetrically installed on both sides of the boring head body 3-20-1 at 180 degrees, a boring head seat 3-20-2 is fixed on one side of the boring head body 3-20-1, and the boring head seat 3-20-2 is press-fitted on the boring head body through an oblique boring head seat bolt 3-20-4. On 3-20-1, one boring blade 3-20-3 is fixed to the boring head seat 3-20-2 through a boring blade screw 3-20-5, and the other boring blade 3-20-3 is directly fixed to the other side of the boring head body 3-20-1 through a boring blade screw 3-20-5. The boring head body 3-20-1 is provided with a fine-tuning top screw 3-20-6 for fine-tuning the boring head seat 3-20-2.

[0105] The above-mentioned boring tool assembly is preferably a Φ40 boring tool-reverse tool according to the requirements of the forming cylinder. The Φ40 boring tool-reverse tool has two tool heads, which are symmetrical at 180 degrees relative to each other, and one end is a micro-adjustable tool holder structure.

[0106] In a specific embodiment: see Figure 15-18 As shown, the left and right cutter discs and transmission device 4 include left and right cutter disc bearing frames 4-1, left and right cutter disc main transmission bevel gears 4-2 and two left and right cutter disc transmission components;

[0107] The left and right cutter disc bearing frames 4-1 are fixed in the left and right cutter disc mounting holes 1-2, the left and right cutter disc main drive bevel gears 4-2 are fixed on the intermediate shaft assembly 2, and the left and right sets of the cutter disc drive assemblies are respectively installed on the left and right sides of the left and right cutter disc bearing frames 4-1;

[0108] Each group of the cutter disc transmission assembly includes a cutter disc transmission bevel gear 4-3 and a cutter disc component 4-8. The shaft of the cutter disc component 4-8 is supported in the left and right cutter disc bearing frames 4-1 through the cutter disc mounting bearing 4-6. The axis of the cutter disc component 4-8 intersects perpendicularly with the axis of the intermediate shaft assembly 2. The cutter disc transmission bevel gear 4-3 is fixed to the inner end of the shaft of the cutter disc component 4-8 through the bevel gear square key 4-4. The two ends of the cutter disc component 4-8 are respectively fixed by the cutter disc bearing end cover 4-5 and the cutter disc bearing pressure cover 4-7; the cutter disc of the cutter disc component 4-8 is located outside the corresponding ends of the left and right cutter disc mounting holes 1-2; the cutter disc transmission bevel gear 4-3 is meshed with the left and right cutter disc main transmission bevel gears 4-2.

[0109] In this embodiment, a Φ270mm cutterhead drive assembly is used to meet the machining requirements for the left and right sides of the forming cylinder's inner cavity. The intermediate shaft assembly 2 drives the left and right cutterhead main drive bevel gears 4-2 (M=4, Z=32) to rotate. These gears simultaneously drive two cutterhead drive bevel gears 4-3 (M=4, Z=32) to rotate clockwise and counterclockwise, respectively. The cutterhead drive bevel gears 4-3 drive the corresponding Φ270mm cutterhead assembly 4-8 to rotate clockwise and counterclockwise, respectively. The cutting tools on the cutterhead assembly 4-8 can then perform cutting operations. The cutterhead assembly 4-8 is supported by tapered roller bearings, allowing for flexible rotation without stalling. In this device, the left and right cutterhead assemblies rotate clockwise and counterclockwise, respectively.

[0110] Among them, see Figure 19-25 As shown, the cutter disc component 4-8 includes a cutter disc body 4-8-1, and a plurality of positive blade seat assemblies 4-8-2 are evenly distributed on the circumference of the cutter disc body 4-8-1; each of the positive blade seat assemblies 4-8-2 includes a positive blade seat 4-8-3, and the positive blade seat 4-8-3 is obliquely pressed on the cutter disc body 4-8-1 by a positive blade seat fixing bolt 4-8-5, and the positive blade seat left and right fine-tuning screws 4-8-7 for left and right fine-tuning and the positive blade seat up and down fine-tuning screws 4-8-8 for up and down fine-tuning are provided on the positive blade seat 4-8-3, and a positive blade 4-8-4 is fixed to the positive blade seat 4-8-3 by a blade screw 4-8-6.

[0111] In this embodiment, in accordance with the processing requirements of the forming cylinder, a Φ270mm cutter disc is used, and 10 1604 positive tool holder assemblies are evenly installed on the Φ270mm cutter disc; the 1604 positive tool holder assembly is composed of a 1604 positive tool holder, a 1604 blade, an M5×15mm hexagonal bolt, a blade screw, an M4×16mm left and right adjustment screw, and a 1604-M3 up and down adjustment screw; the 1604 positive tool holder assembly is tightened on the 1604 blade by an M5×15mm hexagonal bolt. On the cutter disc; the 1604 positive tool holder assembly uses the M4×16mm left and right adjustment screws to make fine adjustments to the tool holder left and right; the 1604 positive tool holder assembly uses the 1604-M3 up and down adjustment screws to make fine adjustments to the tool holder up and down.

[0112] In a specific embodiment: see Figures 26-29 As shown, the upper and lower cutter discs and transmission device 5 include upper and lower side cutter disc bearing frames 5-1, upper and lower cutter disc main transmission bevel gears 5-2, upper and lower cutter disc shafts 5-9, upper cutter disc components 5-3 and lower cutter disc components 5-10;

[0113] The upper and lower cutter disc main transmission bevel gears 5-2 are fixed on the intermediate shaft assembly 2; the upper and lower side cutter disc bearing frames 5-1 are fixed in the upper and lower cutter disc mounting holes 1-3, and the upper and lower cutter disc shafts 5-9 are supported in the upper and lower side cutter disc bearing frames 5-1 through the upper and lower cutter disc shaft mounting bearings 5-5, and one end of the upper and lower side cutter disc bearing frames 5-1 is pressed by the upper and lower cutter disc bearing pressure covers 5-4; the upper and lower cutter disc transmission bevel gears 5-6 are fixed on the upper and lower cutter disc shafts 5-9 through the upper and lower cutter disc bevel gear square keys 5-7, and the upper and lower cutter disc transmission bevel gears 5-6 are positioned by the bushings 5-8, and the upper and lower cutter disc transmission bevel gears 5-6 are meshed with the upper and lower cutter disc main transmission bevel gears 5-2; the upper cutter disc component 5-3 and the lower cutter disc component 5-10 are respectively fixed to the two ends of the upper and lower cutter disc shafts 5-9 by bolts and pins and are placed outside the two ends of the upper and lower cutter disc mounting holes 1-3.

[0114] In this embodiment, according to the processing requirements of the forming cylinder, Cutter head transmission parts. The intermediate shaft drives M=4.5, Z=24 cone arc gear to rotate, M=4.5, Z=24 cone arc gear drives M=4.5, Z=48 cone arc gear to rotate, M=4.5, Z=48 cone arc gear drives 36×28.5×20mm square key and The knife shaft rotates. The lower cutter head assembly is fixed to the outer casing by M12×35mm hexagon socket bolts. The knife shaft is equipped with a tapered roller bearing, which can The knife shaft rotates flexibly without jamming and cooperates with The bushing does not move. The knife shaft passes Bearing cover, M12×45mm hexagon socket bolts and Pin fixed to the housing; O-ring It lubricates the inner cavity and acts as a seal. The upper cutter head is fixed to the On the knife shaft, The lower cutter head is fixed to the On the knife shaft. When the knife shaft rotates, it drives Upper cutter head components and The lower cutter disc rotates and the tool on the disc performs cutting processing.

[0115] Among them, see Figure 30-39 As shown, the upper cutter disc component 5-3 includes an upper cutter disc body 5-3-1, and a plurality of upper positive cutter seat assemblies 5-3-2 are evenly distributed on the circumference of the upper cutter disc body 5-3-1;

[0116] Each of the upper straight blade seat components 5-3-2 includes an upper straight blade seat 5-3-3, which is obliquely pressed onto the upper cutter disc body 5-3-1 via an upper straight blade seat fixing bolt 5-3-5. The upper straight blade seat 5-3-3 is provided with an upper straight blade seat left and right fine-tuning screw 5-3-7 for left and right fine-tuning and an upper straight blade seat up and down fine-tuning screw 5-3-8 for up and down fine-tuning. An upper straight blade 5-3-4 is fixed to the upper straight blade seat 5-3-3 via an upper blade screw 5-3-6.

[0117] The lower cutter disc component 5-10 includes a lower cutter disc body 5-10-1, and a plurality of lower counter cutter seat assemblies 5-10-2 are evenly distributed on the circumference of the lower cutter disc body 5-10-1;

[0118] Each of the lower reverse tool seat components 5-10-2 includes a lower reverse tool seat 5-10-3, which is obliquely pressed onto the lower cutter disc body 5-10-1 by a lower reverse tool seat fixing bolt 5-10-5. The lower reverse tool seat 5-10-3 is provided with a lower reverse tool seat left and right fine-tuning screw 5-10-7 for left and right fine-tuning and a lower reverse tool seat up and down fine-tuning screw 5-10-8 for up and down fine-tuning. A lower reverse blade 5-10-4 is fixed to the lower reverse tool seat 5-10-3 by a lower blade screw 5-10-6.

[0119] In this embodiment, the upper and lower cutter disc components are both made of Cutter head components. 10 1604 positive tool holder assemblies are evenly distributed on the upper tool disc; Ten 1604 reverse blade seat assemblies are evenly distributed on the lower cutter disc; the 1604 positive blade seat assembly is composed of a 1604 positive blade seat, a 1604 blade, an M5×15mm hexagon socket bolt, a blade screw, an M4×16mm left and right adjustment screw, and a 1604-M3 up and down adjustment screw. The 1604 reverse blade seat assembly is composed of a 1604 blade, an M5×15mm hexagon socket bolt, a blade screw, an M4×16mm left and right adjustment screw, a 1604-M3 up and down adjustment screw, and a 1604 reverse blade seat. The 1604 positive blade seat assembly is tightened on the lower cutter disc by an M5×15mm hexagon socket bolt. On the upper cutter head; the 1604 reverse cutter seat assembly is tightened on the upper cutter head by M5×15mm hexagon socket bolts. On the lower cutter disc; the 1604 blade is pressed onto the 1604 positive tool holder or the 1604 reverse tool holder by the blade screw; the 1604 positive tool holder assembly and the 1604 reverse tool holder assembly are fine-tuned left and right by the M4×16mm left and right adjustment screws; the 1604 positive tool holder assembly and the 604 reverse tool holder assembly are fine-tuned up and down by the 1604-M3 up and down adjustment screws.

[0120] In a specific embodiment: see Figures 40-45 As shown, the intermediate shaft assembly 2 includes an intermediate shaft 2-1, an end bearing seat 2-2, and a middle bearing seat 2-11. The end bearing seat 2-2 is fixed inside the left end of the housing 1, and the middle bearing seat 2-11 is fixed in the bearing seat mounting groove 1-4 in the middle of the housing 1; the left end of the intermediate shaft 2-1 is supported in the end bearing seat 2-2 by the intermediate shaft left bearing 2-4, and the end of the end bearing seat 2-2 is pressed by the end bearing pressure cover 2-3; the right end of the intermediate shaft 2-1 is supported in the middle bearing seat 2-11 by the intermediate shaft right bearing 2-13, and the upper end of the middle bearing seat 2-11 is pressed by the middle bearing upper cover 2-12;

[0121] The intermediate shaft 2-1 is provided with a boring cutter main drive spur gear 3-1, a left and right cutter disc main drive bevel gear 4-2, and an upper and lower cutter disc main drive bevel gear 5-2 for respectively driving the boring cutter and transmission device 3, the left and right cutter discs and transmission device 4, and the upper and lower cutter discs and transmission device 5; the boring cutter main drive spur gear 3-1 is fixed to the intermediate shaft 2-1 through a toothed sleeve external thread 2-5, a round nut 2-6, a stop washer 2-7, and a square key I 2-8; the left and right cutter disc main drive bevel gears 4-2 are fixed to the intermediate shaft 2-1 through a square key II 2-10 and are limited by a shoulder and an intermediate spacer sleeve 2-9; the upper and lower cutter disc main drive bevel gears 5-2 are fixed to the end of the intermediate shaft 2-1 through a square key III 2-14 and are limited by a shaft head pressure plate 2-15 and a shaft shoulder.

[0122] In the above structure, power from the machine tool conversion equipment drives the intermediate shaft, which in turn drives the boring cutter and transmission device 3, the left and right cutter heads and transmission device 4, and the upper and lower cutter heads and transmission device 5, including the boring cutter main drive spur gear 3-1, the left and right cutter heads main drive bevel gears 4-2, and the upper and lower cutter heads main drive bevel gears 5-2, thereby achieving power transmission. In this structure, an M10×1mm straight-through pressure-injected oiler is used to provide lubrication to the main transmission components.

[0123] In a specific embodiment: see Figures 46-51 As shown, it also includes an external movable tooling 8 for fixing a workpiece 9 with a square cavity on a pallet of a machine tool; the external movable tooling 8 is composed of an external tooling base plate 8-1, an external tooling front vertical plate 8-2, an external tooling rear buckle plate 8-4, two external tooling rear vertical plates 8-3 and two external tooling reinforcement plates 8-5, the external tooling front vertical plate 8-2 is fixedly connected perpendicularly to the front edge of the upper surface of the external tooling base plate 8-1, the two external tooling rear vertical plates 8-3 are fixedly connected perpendicularly to the two sides of the rear edge of the upper surface of the external tooling base plate 8-1, and the two external tooling reinforcement plates are fixedly connected perpendicularly to the two sides of the rear edge of the upper surface of the external tooling base plate 8-1. The plate 8-5 is fixed perpendicularly to the left and right edges of the upper surface of the external tooling bottom plate 8-1; the upper and lower ends of the external tooling rear vertical plate 8-3 are provided with sockets 8-3-1, and the four corners of the external tooling rear gusset plate 8-4 are provided with plug blocks 8-4-1, and the plug blocks 8-4-1 are correspondingly inserted into the sockets 8-3-1. The upper and lower parts of the external tooling rear vertical plate 8-3 are screwed with tightening screws 8-7 corresponding to the sockets 8-3-1, and the tightening screws 8-7 tighten the plug blocks 8-4-1 inserted into the sockets 8-3-1. An anti-pressure pad 8-6 is provided between the tightening screws 8-7 and the plug blocks 8-4-1;

[0124] The external tooling front vertical plate 8-2 and the external tooling rear plate 8-4 are both provided with holes that are adapted to the shape of the cavity port of the workpiece 9; the external tooling front vertical plate 8-2 is arranged with bolt holes corresponding to the positions of the bolt through holes on the connection surface of the workpiece 9, and a front tensioning plate 8-8 is set at the back connection of the connection surface of the workpiece 9 during installation, and the external tooling front vertical plate 8-2, the front of the workpiece 9 and the front tensioning plate 8-8 are connected by front tensioning bolts 8-9 and front positioning pins 8-10; the external tooling rear plate 8-4 is arranged with bolt holes corresponding to the positions of the bolt through holes on the connection surface of the workpiece 9, and a rear tensioning plate 8-11 is set at the back connection of the connection surface of the workpiece 9 during installation, and the external tooling rear plate 8-4, the rear of the workpiece 9 and the rear tensioning plate 8-11 are connected by rear tensioning bolts 8-12 and rear positioning pins 8-13.

[0125] When the above-mentioned external mobile tooling 8 is used, the workpiece is placed inside the external mobile tooling 8, so that one end face of the workpiece 9 is fixedly connected to the front vertical plate 8-2 of the external tooling through the front tensioning plate 8-8, the front tensioning bolt 8-9 and the front positioning pin 8-10, and the other end of the workpiece 9 is connected to the rear clip plate 8-4 of the external tooling through the rear tensioning plate 8-11, the rear tensioning bolt 8-12 and the rear positioning pin 8-13, and the plug 8-4-1 on the rear clip plate 8-4 of the external tooling is correspondingly inserted into the socket 8-3-1 on the rear vertical plate 8-3 of the external tooling, and then the plug 8-4-1 is tightened with the tightening screw 8-7. At the same time, the anti-pressure pad 8-6 cooperates with the tightening screw 8-7 to assemble and adjust the workpiece 9. After the above assembly is completed, the external mobile tooling is assembled on the pallet in the equipment through the external tooling bottom plate and can be moved.

[0126] The utility model can complete the fine processing of the square cavity of a large workpiece by clamping it once on an ordinary machine tool, realize the flow operation of large parts, greatly improve the processing efficiency, and ensure that the production task is completed on schedule.

[0127] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0128] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Square cavity high-efficiency and high-quality finishing tool assembly device, characterized by: The invention comprises a shell (1), wherein an intermediate shaft assembly (2) is rotatably supported inside the shell (1), and the axis of the intermediate shaft assembly (2) is arranged along the length direction of the shell (1); a boring tool and a transmission device (3), a left and right cutter disc and a transmission device (4), and an upper and lower cutter disc and a transmission device (5) are sequentially arranged on the intermediate shaft assembly (2) from left to right; the boring tool and the transmission device (3) are provided with four groups of boring tools, which are respectively arranged outside the shell (1) corresponding to the four corners of the shell (1) and used for processing the four corners in the square cavity of the workpiece (9); the left and right cutter discs and the transmission device (4) are provided with two groups of cutter discs, which are respectively arranged outside the shell (1) corresponding to the left and right side surfaces of the shell (1) and used for processing the left and right side surfaces in the square cavity of the workpiece (9); the upper and lower cutter discs and the transmission device (5) are provided with two groups of cutter discs, which are respectively arranged outside the shell (1) corresponding to the upper and lower side surfaces of the shell (1) and used for processing the upper and lower side surfaces in the square cavity of the workpiece (9).

2. The high-efficiency and high-quality square cavity finishing tool assembly device according to claim 1 is characterized in that: The housing (1) is provided with a boring tool mounting hole (1-1), a left and right cutter disc mounting hole (1-2), and an upper and lower cutter disc mounting hole (1-3) corresponding to the mounting positions of the boring tool and the transmission device (3), the left and right cutter discs and the transmission device (4), and the upper and lower cutter discs and the transmission device (5) in sequence from left to right along the length direction. The boring tool mounting holes (1-1) are provided with four holes and are distributed at the four corners of the housing (1). The two ends of the left and right cutter disc mounting holes (1-2) correspond to the left and right side surfaces of the housing (1), and the two ends of the upper and lower cutter disc mounting holes (1-3) correspond to the upper and lower side surfaces of the housing (1). Brackets (6) are detachably fixedly connected to both ends of the housing (1), and the brackets (6) are used to connect to guide rails on machine tools. Hanging rings (7) are provided on both end surfaces of the housing (1), and the hanging rings (7) do not exceed the left and right sides and the upper and lower sides of the housing (1).

3. The high-efficiency and high-quality square cavity finishing tool assembly device according to claim 2 is characterized in that: The boring tool and transmission device (3) comprises a boring tool main transmission spur gear (3-1) and four sets of boring tool transmission components. The boring tool main transmission spur gear (3-1) is fixed on an intermediate shaft component (2). The four sets of boring tool transmission components are installed corresponding to the four boring tool mounting holes (1-1). Each group of boring tool transmission components comprises a boring tool bearing seat (3-2), a boring tool bearing pressure cover (3-3), a boring tool transmission shaft I (3-4), a boring tool transmission shaft II (3-9), a boring tool transmission shaft III (3-14), a boring tool transmission spur gear I (3-5), a boring tool transmission spur gear II (3-13), a boring tool transmission spur gear III (3-15) and a boring tool component (3-20); the boring tool bearing seat (3-2) is fixed in the corresponding boring tool mounting hole (1-1), and the port of the boring tool bearing seat (3-2) is covered by the boring tool bearing pressure cover (3-3); The boring cutter transmission shaft I (3-4) is supported in the boring cutter bearing seat (3-2) via a transmission shaft support bearing I (3-7); the boring cutter transmission shaft I (3-4) is fixedly connected to the boring cutter transmission spur gear I (3-5) via a spur gear spacer I (3-6) and a spur gear flat key I (3-8); The boring cutter transmission shaft II (3-9) is supported in the boring cutter bearing seat (3-2) via a transmission shaft support bearing II (3-10); the boring cutter transmission shaft II (3-9) is fixedly connected to the boring cutter transmission spur gear II (3-13) via a spur gear spacer II (3-11) and a spur gear flat key II (3-12); The boring cutter transmission shaft III (3-14) is supported in the boring cutter bearing seat (3-2) via a transmission shaft support bearing III (3-16); the boring cutter transmission shaft III (3-14) is fixedly connected to the boring cutter transmission spur gear III (3-15) via a spur gear spacer III (3-17) and a spur gear flat key III (3-18); The boring cutter transmission shaft I (3-4), the boring cutter transmission shaft II (3-9), and the boring cutter transmission shaft III (3-14) are all parallel to the axis of the intermediate shaft assembly (2); the boring cutter transmission spur gear I (3-5) is meshed with the boring cutter main transmission spur gear (3-1); the boring cutter transmission spur gear I (3-5) is meshed with the boring cutter transmission spur gear II (3-13); the boring cutter transmission spur gear II (3-13) is meshed with the boring cutter transmission spur gear III (3-15); and a boring cutter assembly (3-20) is fixed on one end of the boring cutter transmission shaft III (3-14); The boring cutter bearing seat (3-2) and the boring cutter transmission shaft III (3-14) are sealed via a sealing ring, and the boring cutter bearing seat (3-2) is positioned and fixed via a boring cutter bearing seat fixing bolt (3-19) and a boring cutter bearing seat locating pin (3-21).

4. The high-efficiency and high-quality square cavity finishing tool assembly device according to claim 3 is characterized in that: The boring tool assembly (3-20) comprises a boring head body (3-20-1) and two boring blades (3-20-3), wherein the two boring blades (3-20-3) are symmetrically mounted on both sides of the boring head body (3-20-1) at 180 degrees, a boring head seat (3-20-2) is fixed on one side of the boring head body (3-20-1), and the boring head seat (3-20-2) is press-fitted on the boring head body (3-20-1) via an obliquely mounted boring head seat bolt (3-20-4). -20-1), one of the boring blades (3-20-3) is fixed on the boring head seat (3-20-2) through a boring blade screw (3-20-5), and the other boring blade (3-20-3) is directly fixed on the other side of the boring head body (3-20-1) through a boring blade screw (3-20-5), and the boring head body (3-20-1) is provided with a fine-tuning top screw (3-20-6) for fine-tuning the boring head seat (3-20-2).

5. The high-efficiency and high-quality square cavity finishing tool assembly device according to claim 2 is characterized in that: The left and right cutter discs and transmission device (4) include left and right cutter disc bearing frames (4-1), left and right cutter disc main transmission bevel gears (4-2) and two left and right cutter disc transmission components; The left and right cutter disc bearing frames (4-1) are fixed in the left and right cutter disc mounting holes (1-2), the left and right cutter disc main drive bevel gears (4-2) are fixed on the intermediate shaft assembly (2), and the left and right sets of the cutter disc drive assemblies are respectively installed on the left and right sides of the left and right cutter disc bearing frames (4-1); Each set of the cutter disc transmission assembly comprises a cutter disc transmission bevel gear (4-3) and a cutter disc component (4-8); the shaft of the cutter disc component (4-8) is supported in the left and right cutter disc bearing frames (4-1) through a cutter disc mounting bearing (4-6); the axis of the cutter disc component (4-8) intersects perpendicularly with the axis of the intermediate shaft component (2); the cutter disc transmission bevel gear (4-3) is fixed to the inner end of the shaft of the cutter disc component (4-8) through a bevel gear square key (4-4); the two ends of the cutter disc component (4-8) are respectively fixed by a cutter disc bearing end cover (4-5) and a cutter disc bearing pressure cover (4-7); the cutter disc of the cutter disc component (4-8) is located outside the corresponding ends of the left and right cutter disc mounting holes (1-2); and the cutter disc transmission bevel gear (4-3) is meshed with the left and right cutter disc main transmission bevel gears (4-2).

6. The high-efficiency and high-quality square cavity finishing tool assembly device according to claim 5 is characterized in that: The cutter disc component (4-8) includes a cutter disc body (4-8-1), and a plurality of positive blade seat assemblies (4-8-2) are evenly distributed on the circumference of the cutter disc body (4-8-1); each positive blade seat assembly (4-8-2) includes a positive blade seat (4-8-3), and the positive blade seat (4-8-3) is obliquely mounted and pressed on the cutter disc body (4-8-1) through a positive blade seat fixing bolt (4-8-5); the positive blade seat left and right fine-tuning screws (4-8-7) for left and right fine-tuning and positive blade seat up and down fine-tuning screws (4-8-8) for up and down fine-tuning are provided on the positive blade seat (4-8-3); a positive blade (4-8-4) is fixed on the positive blade seat (4-8-3) through a blade screw (4-8-6).

7. The high-efficiency and high-quality square cavity finishing tool assembly device according to claim 2 is characterized in that: The upper and lower cutter discs and transmission device (5) include upper and lower cutter disc bearing frames (5-1), upper and lower cutter disc main transmission bevel gears (5-2), upper and lower cutter disc shafts (5-9), an upper cutter disc component (5-3) and a lower cutter disc component (5-10); The upper and lower cutter disc main drive bevel gears (5-2) are fixed on the intermediate shaft assembly (2); the upper and lower side cutter disc bearing frames (5-1) are fixed in the upper and lower cutter disc mounting holes (1-3); the upper and lower cutter disc shafts (5-9) are supported in the upper and lower side cutter disc bearing frames (5-1) through the upper and lower cutter disc shaft mounting bearings (5-5); one end of the upper and lower side cutter disc bearing frames (5-1) is pressed by the upper and lower cutter disc bearing pressure covers (5-4); the upper and lower cutter disc shafts (5-9) are supported by the upper and lower cutter disc shaft mounting bearings (5-5). The disc bevel gear square key (5-7) is fixed with the upper and lower cutter disc transmission bevel gears (5-6), the upper and lower cutter disc transmission bevel gears (5-6) are positioned by bushings (5-8), and the upper and lower cutter disc transmission bevel gears (5-6) are meshed with the upper and lower cutter disc main transmission bevel gears (5-2); the upper cutter disc component (5-3) and the lower cutter disc component (5-10) are respectively fixed to the two ends of the upper and lower cutter disc shafts (5-9) by bolts and pins and are placed outside the two ends of the upper and lower cutter disc mounting holes (1-3).

8. The high-efficiency and high-quality square cavity finishing tool assembly device according to claim 7 is characterized in that: The upper cutter disc component (5-3) comprises an upper cutter disc body (5-3-1), and a plurality of upper positive cutter seat assemblies (5-3-2) are evenly distributed on the circumference of the upper cutter disc body (5-3-1); Each upper straight blade seat assembly (5-3-2) comprises an upper straight blade seat (5-3-3), the upper straight blade seat (5-3-3) being obliquely mounted and pressed onto the upper cutter disc body (5-3-1) via an upper straight blade seat fixing bolt (5-3-5), the upper straight blade seat left and right fine-tuning screws (5-3-7) for left and right fine-tuning and upper straight blade seat up and down fine-tuning screws (5-3-8) for up and down fine-tuning are provided on the upper straight blade seat (5-3-3), and an upper straight blade (5-3-4) is fixed to the upper straight blade seat (5-3-3) via an upper blade screw (5-3-6); The lower cutter disc component (5-10) comprises a lower cutter disc body (5-10-1), and a plurality of lower reverse cutter seat assemblies (5-10-2) are evenly distributed on the circumference of the lower cutter disc body (5-10-1); Each lower reverse blade seat assembly (5-10-2) comprises a lower reverse blade seat (5-10-3), wherein the lower reverse blade seat (5-10-3) is obliquely mounted and pressed onto the lower cutter disc body (5-10-1) via a lower reverse blade seat fixing bolt (5-10-5), and the lower reverse blade seat left and right fine-tuning screws (5-10-7) for left and right fine-tuning and lower reverse blade seat up and down fine-tuning screws (5-10-8) for up and down fine-tuning are provided on the lower reverse blade seat (5-10-3), and a lower reverse blade (5-10-4) is fixed to the lower reverse blade seat (5-10-3) via a lower blade screw (5-10-6).

9. The high-efficiency and high-quality square cavity finishing tool assembly device according to claim 2 is characterized in that: The intermediate shaft assembly (2) comprises an intermediate shaft (2-1), an end bearing seat (2-2), and a middle bearing seat (2-11); the end bearing seat (2-2) is fixed inside the left end of the housing (1), and the middle bearing seat (2-11) is fixed in the bearing seat mounting groove (1-4) in the middle of the housing (1); the left end of the intermediate shaft (2-1) is supported in the end bearing seat (2-2) through the intermediate shaft left bearing (2-4), and the end of the end bearing seat (2-2) is pressed by the end bearing pressure cover (2-3); the right end of the intermediate shaft (2-1) is supported in the middle bearing seat (2-11) through the intermediate shaft right bearing (2-13), and the upper end of the middle bearing seat (2-11) is pressed by the middle bearing upper cover (2-12); The intermediate shaft (2-1) is provided with a boring cutter main transmission spur gear (3-1), a left and right cutter disc main transmission bevel gear (4-2), and an upper and lower cutter disc main transmission bevel gear (5-2) for respectively driving the boring cutter and transmission device (3), the left and right cutter discs and transmission device (4), and the upper and lower cutter discs and transmission device (5); the boring cutter main transmission spur gear (3-1) is fixed to the intermediate shaft (2-1) through a toothed sleeve external thread (2-5), a round nut (2-6), a stop washer (2-7), and a square key I (2-8); the left and right cutter disc main transmission bevel gears (4-2) are fixed to the intermediate shaft (2-1) through a square key II (2-10) and are limited by a shoulder and a middle spacer sleeve (2-9); the upper and lower cutter disc main transmission bevel gears (5-2) are fixed to the end of the intermediate shaft (2-1) through a square key III (2-14) and are limited by a shaft head pressure plate (2-15) and a shaft shoulder.

10. The high-efficiency and high-quality square cavity finishing tool assembly device according to claim 1 is characterized in that: The machine also includes an external movable tool (8) for fixing a workpiece (9) having a square cavity on a support plate of a machine tool; the external movable tool (8) is composed of an external tool base plate (8-1), an external tool front vertical plate (8-2), an external tool rear buckle plate (8-4), two external tool rear vertical plates (8-3) and two external tool reinforcement plates (8-5), wherein the external tool front vertical plate (8-2) is fixedly connected perpendicularly to the front edge of the upper surface of the external tool base plate (8-1), the two external tool rear vertical plates (8-3) are fixedly connected perpendicularly to the rear edge of the upper surface of the external tool base plate (8-1) in a symmetrical manner, and the two external tool reinforcement plates (8-5) are fixedly connected perpendicularly to the rear edge of the upper surface of the external tool base plate (8-1). The external tooling rear plate (8-1) is fixed perpendicular to the left and right edges of the upper surface; the upper and lower ends of the external tooling rear plate (8-3) are both provided with insertion holes (8-3-1); the four corners of the external tooling rear buckle plate (8-4) are each provided with an insertion block (8-4-1); the insertion block (8-4-1) is correspondingly inserted into the insertion hole (8-3-1); the upper and lower parts of the external tooling rear plate (8-3) are both screwed with a tightening screw (8-7) corresponding to the insertion hole (8-3-1); the tightening screw (8-7) tightens the insertion block (8-4-1) inserted into the insertion hole (8-3-1); an anti-pressure pad (8-6) is provided between the tightening screw (8-7) and the insertion block (8-4-1); The external tooling front vertical plate (8-2) and the external tooling rear buckle plate (8-4) are both provided with holes that are adapted to the shape of the cavity port of the workpiece (9); the external tooling front vertical plate (8-2) is provided with bolt holes corresponding to the positions of the bolt through holes on the connection surface of the workpiece (9); when installing, a front tensioning plate (8-8) is provided at the back connection of the connection surface of the workpiece (9); the external tooling front vertical plate (8-2), the front of the workpiece (9) and the front tensioning plate (8-8) are connected through The front tensioning bolt (8-9) is connected to the front positioning pin (8-10); bolt holes corresponding to the bolt through-hole positions on the connection surface of the workpiece (9) are arranged on the external tooling rear buckle plate (8-4); a rear tensioning plate (8-11) is set at the back connection of the connection surface of the workpiece (9) during installation; the external tooling rear buckle plate (8-4), the rear part of the workpiece (9) and the rear tensioning plate (8-11) are connected by the rear tensioning bolt (8-12) and the rear positioning pin (8-13).

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