Finish machining tool combination device for square cavity

Abstract

The invention provides a 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. The square cavity of the large workpiece can be clamped on a common machine tool at a time to finish machining in the cavity, the machining efficiency is greatly improved, and operation is easy and convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of machining equipment, and in particular relates to a 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. The overall material is particularly hard. The cutting depth can only be about 0.5mm each time. The processing is very slow and the efficiency is very low. The inner cavity of the forming cylinder has very high processing requirements. No cutting is allowed. The surface roughness requirements are ≤1.6 and the flatness is ≤0.1. Since the depth of the cylinder exceeds the processing range of ordinary tool bars, a more expensive damping tool bar was purchased for trial processing. Since there are many damping tool bars with different configurations for the depth of the forming cylinder, the cost is too high, and the processing efficiency can only be increased by 20%, which cannot meet the customer's delivery requirements. Therefore, in order to save costs and improve processing efficiency, it is necessary to modify the existing 61125 ordinary horizontal lathe, remove the existing lathe tool holder, middle bracket and tailstock, and design and install a tool combination device suitable for one-time finishing of square cavity parts such as forming cylinders, so as to achieve the purpose of improving work efficiency and meeting processing requirements. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a finishing tool combination device for square cavities. The purpose of the present invention is to design a combined tool device in combination with an ordinary machine tool to achieve one-time clamping of a square cavity of a large workpiece on an ordinary machine tool to complete the finishing of the cavity, thereby realizing the assembly line operation of large parts, greatly improving the processing efficiency, and ensuring that the production task is completed on schedule.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A finishing tool assembly device for a square cavity comprises a housing, wherein the housing is an elongated housing structure with a square cross section;

[0006] An intermediate shaft assembly is rotatably supported inside the housing, and the axis of the intermediate shaft assembly is arranged along the length direction of the housing;

[0007] The intermediate shaft assembly is provided with 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 in sequence from left to right; the boring tool and the transmission device are provided with four groups of boring tools and 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 and 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 in the square cavity of the workpiece; the upper and lower cutter discs and the transmission device are provided with two groups of cutter discs and 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 in the square cavity of the workpiece.

[0008] Further limiting the above scheme, 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.

[0009] Both ends of the shell are detachably and 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 sides and the upper and lower sides of the shell.

[0010] Further limiting the above scheme, the boring tool and the transmission device include a boring tool main transmission spur gear and four sets of boring tool transmission components, the boring tool main transmission spur gear is fixed on the intermediate shaft component, and the four sets of boring tool transmission components are installed corresponding to the four boring tool mounting holes;

[0011] Each group of boring tool transmission components includes a boring tool bearing seat, a boring tool bearing 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 component; 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 cover;

[0012] 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;

[0013] 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 spur gear 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 on the boring cutter transmission shaft II;

[0014] 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;

[0015] The boring cutter transmission shaft I, boring cutter transmission shaft II, and boring cutter transmission shaft III are all parallel to the axis of the intermediate shaft assembly, the boring cutter transmission spur gear I is meshed with the boring cutter main transmission spur gear, the boring cutter transmission spur gear I is meshed with the boring cutter transmission spur gear II, the boring cutter transmission spur gear II is meshed with the boring cutter transmission spur gear III, and a boring cutter assembly is fixed on one end of the boring cutter transmission shaft III;

[0016] The boring tool bearing seat and the boring tool transmission shaft III are sealed by a sealing ring, and the boring tool bearing seat is positioned and fixed by a boring tool bearing seat fixing bolt and a boring tool bearing seat locating pin.

[0017] 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 through oblique boring head seat bolts, one of the boring blades is fixed to the boring head seat through a boring blade screw, and the other boring blade is directly fixed to the other side of the boring head body through a boring blade screw, and the boring head body is provided with a fine-tuning top screw for fine-tuning the boring head seat.

[0018] Further limiting the above scheme, the left and right cutter discs and the transmission device include left and right cutter disc bearing frames, left and right cutter disc main transmission bevel gears and left and right cutter disc transmission components;

[0019] 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;

[0020] Each group 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 a cutter disc mounting bearing. The axis of the cutter disc component intersects the axis of the intermediate shaft assembly at right angles. The cutter disc transmission bevel gear is fixed to the inner end of the shaft of the cutter disc component through a bevel gear square key. The two ends of the cutter disc component are respectively fixed by a cutter disc bearing end cover and a 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.

[0021] To further limit the above scheme, the cutter disc component includes a cutter disc body, and a plurality of straight blade seat assemblies are evenly distributed on the circumference of the cutter disc body; each straight blade seat assembly includes a straight blade seat, and the straight blade seat is obliquely pressed onto the cutter disc body by a straight blade seat fixing bolt, and the straight blade seat is provided with left and right straight blade seat fine-tuning screws for left and right fine-tuning and up and down straight blade seat fine-tuning screws for up and down fine-tuning, and a straight blade is fixed to the straight blade seat by a blade screw.

[0022] Further limiting the above scheme, the upper and lower cutter discs and the transmission device include upper and lower side cutter disc bearing frames, upper and lower cutter disc main transmission bevel gears, upper and lower cutter disc shafts, upper cutter disc components and lower cutter disc components;

[0023] The upper and lower cutter disc main drive 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, 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 are pressed by the upper and lower cutter disc bearing glands; 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, 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 drive 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.

[0024] Further limiting the above solution, the upper cutter disc component comprises 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;

[0025] Each of the upper straight blade seat components comprises an upper straight blade seat, which is obliquely pressed onto the upper blade disc body by means of an upper straight blade seat fixing bolt, and is provided with an upper straight blade seat left and right fine-tuning screw for left and right fine-tuning and an upper straight blade seat up and down fine-tuning screw for up and down fine-tuning, and an upper straight blade is fixed onto the upper straight blade seat by means of an upper blade screw;

[0026] 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;

[0027] Each of the lower reverse knife seat components includes a lower reverse knife seat, which is obliquely pressed onto the lower knife disc body by 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 by a lower blade screw.

[0028] Further defining the above scheme, 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 left intermediate shaft 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 right intermediate shaft bearing, and the upper opening of the middle bearing seat is pressed by the middle bearing upper cover;

[0029] The intermediate shaft is provided with a boring cutter main drive spur gear, a left and right cutter main drive bevel gear, and an upper and lower cutter main drive bevel gear, which are used to drive 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 respectively; 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 main drive bevel gears are fixed to the intermediate shaft by a square key II and are limited by a shoulder and a middle spacer sleeve; the upper and lower cutter 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.

[0030] A further limitation of the above scheme also includes an external movable tooling for fixing a workpiece with a square cavity on a support plate of a machine tool; the external movable tooling is composed of an external tooling base plate, an external tooling front vertical plate, an external tooling rear buckle plate, two external tooling rear vertical plates and two external tooling reinforcement plates, the external tooling front vertical plate is fixedly connected perpendicularly to the front edge of the upper surface of the external tooling base plate, the two external tooling rear vertical plates are fixedly connected perpendicularly to the rear edge of the upper surface of the external tooling base plate and symmetrically, 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 vertical plate are provided with sockets, the four corners of the external tooling rear buckle plate are provided with plug blocks, the plug blocks are correspondingly inserted into the sockets, the upper and lower parts of the external tooling rear vertical plate are screwed with tightening screws corresponding to the sockets, the tightening screws tighten the plug blocks inserted into the sockets, and an anti-compression pad is separated from the tightening screws and the plug blocks;

[0031] The external tooling front vertical plate and the external tooling rear plate are both provided with holes that match the shape of the cavity port of the workpiece; the external tooling front vertical plate is arranged with bolt holes corresponding to the positions of the bolt through holes on the workpiece connection surface, and a front tensioning plate is arranged 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 positions of the bolt through holes on the workpiece connection surface, and a rear tensioning plate is arranged 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.

[0032] The advantages of the present invention compared with the prior art are:

[0033] 1. When this solution is used, the shell is installed on the Z guide rail of the equipment, the workpiece is installed on the X-axis middle support plate of the equipment through the tooling, the tooling is controlled by the middle support plate of the equipment and the workpiece is driven to move, so that the square cavity of the workpiece passes through the tool assembly device, and the workpiece passes through the upper and lower cutter discs and the transmission device 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 discs and the transmission device perform fine processing on the left and right sides of the square cavity of the workpiece, and the boring tool and the transmission device 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 once on an ordinary machine tool to complete the fine processing in the cavity, and also realizing the assembly line operation of large parts, greatly improving the processing efficiency, and ensuring the completion of production tasks on schedule;

[0034] 2. In this solution, the main power is provided by the lathe, and the tool assembly device is designed in combination with the structural characteristics of the lathe, thereby ensuring that the tool assembly device can be effectively combined with the lathe structure, and can complete the processing of square cavity workpieces of different models, avoiding 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

[0035] Figure 1 The three-dimensional structure of the overall device of the present invention is shown in FIG. Figure 1 ;

[0036] Figure 2 The three-dimensional structure of the overall device of the present invention is shown in FIG. Figure 2 ;

[0037] Figure 3 It is a main structural diagram of the overall device of the present invention;

[0038] Figure 4 It is a top view of the overall structure of the device of the present invention;

[0039] Figure 5 The three-dimensional structure of the boring tool and the transmission device in the present invention is shown in FIG. Figure 1 ;

[0040] Figure 6 The three-dimensional structure of the boring tool and the transmission device in the present invention is shown in FIG. Figure 2 ;

[0041] Figure 7 It is a front view structural diagram of the boring cutter and the transmission device in the present invention;

[0042] Figure 8 The front view of the internal structure of the boring cutter and the transmission device in the present invention;

[0043] Fig. 9 For the present invention Figure 7 AA structural section view;

[0044] Fig.10 It is a schematic diagram of the internal three-dimensional structure of the boring tool and the transmission device in the present invention;

[0045] Fig.11 The three-dimensional structure of the boring tool assembly of the present invention is shown in FIG. Figure 1 ;

[0046] Fig.12 The three-dimensional structure of the boring tool assembly of the present invention is shown in FIG. Figure 2 ;

[0047] Fig.13 It is a front view structural diagram of the boring tool assembly in the present invention;

[0048] Fig.14 For the present invention Fig.13 BB structural section view;

[0049] Fig.15 The three-dimensional structure of the left and right cutter discs and the transmission device in the present invention is shown in FIG. Figure 1 ;

[0050] Fig.16 The three-dimensional structure of the left and right cutter discs and the transmission device in the present invention is shown in FIG. Figure 2 ;

[0051] Fig.17 It is a front view structural diagram of the left and right cutter discs and the transmission device in the present invention;

[0052] Fig.18 For the present invention Fig.17 The CC structural section view;

[0053] Fig.19 It is a three-dimensional structural schematic diagram of the cutter head component in the present invention;

[0054] Fig. 20 It is a front view structural diagram of the cutter head component in the present invention;

[0055] Fig.21 For the present invention Fig. 20 DD structural section view;

[0056] Fig. 22 It is a schematic diagram of the three-dimensional structure of the positive knife seat assembly on the knife disc component of the present invention;

[0057] Fig.23 It is a front view structural diagram of the positive tool holder assembly of the present invention;

[0058] Fig.24 For the present invention Fig.23 EE structural section view;

[0059] Fig.25 For the present invention Fig.23FF structural section view;

[0060] Fig.26 The three-dimensional structure of the upper and lower cutter discs and the transmission device in the present invention is shown in FIG. Figure 1 ;

[0061] Fig. 27 The three-dimensional structure of the upper and lower cutter discs and the transmission device in the present invention is shown in FIG. Figure 2 ;

[0062] Fig.28 It is a front view structural diagram of the upper and lower cutter discs and the transmission device in the present invention;

[0063] Fig.29 It is a cross-sectional view of the internal structure of the upper and lower cutter discs and the transmission device in the present invention;

[0064] Fig.30 It is a schematic diagram of the three-dimensional structure of the upper cutter disc component in the present invention;

[0065] Fig.31 It is a schematic diagram of the three-dimensional structure of the upper positive tool holder assembly in the present invention;

[0066] Fig.32 It is a front view structural diagram of the upper positive tool holder assembly of the present invention;

[0067] Fig.33 For the present invention Fig.32 The GG structural section view;

[0068] Fig.34 For the present invention Fig.32 HH structural section view;

[0069] Fig.35 It is a three-dimensional structural schematic diagram of the lower cutter disc component in the present invention;

[0070] Fig.36 It is a schematic diagram of the three-dimensional structure of the lower reverse tool holder assembly in the present invention;

[0071] Fig.37 It is a front structural diagram of the lower reverse knife holder assembly of the present invention;

[0072] Fig.38 For the present invention Fig.37 The II-direction structural cross-sectional view;

[0073] Fig.39 For the present invention Fig.37 The JJ structural section view;

[0074] Fig.40 It is a schematic diagram of the three-dimensional external structure of the shell in the present invention;

[0075] Fig.41It is a front view of the housing in the present invention;

[0076] Fig.42 For the present invention Fig.41 A schematic diagram of the structure of the intermediate shaft assembly shown in the KK direction;

[0077] Fig.43 It is a three-dimensional structural schematic diagram of the intermediate shaft assembly in the present invention;

[0078] Fig.44 This is a front structural diagram of the intermediate shaft assembly of the present invention;

[0079] Fig.45 is a cross-sectional view of the intermediate shaft assembly of the present invention;

[0080] Fig.46 The three-dimensional structure of the external mobile tooling in the present invention is shown in FIG. Figure 1 ;

[0081] Fig.47 The three-dimensional structure of the external mobile tooling in the present invention is shown in FIG. Figure 2 ;

[0082] Fig.48 This is a main structural diagram of the external mobile tooling in the present invention;

[0083] Fig.49 It is a left-side structural diagram of the external mobile tooling in the present invention;

[0084] Fig.50 It is a right view structural diagram of the external mobile tooling in the present invention;

[0085] Fig.51 It is a top view of the structure of the external mobile tooling in the present invention. DETAILED DESCRIPTION

[0086] The following will be combined with the 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 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 are within the scope of protection of the present invention.

[0087] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present invention.

[0088] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0089] See also Figure 1-51 , details of the embodiments of the present invention.

[0090] Embodiment: A finishing tool assembly device for a square cavity, see Figure 1-4 As shown, it includes a housing 1, and the housing 1 is an elongated housing structure with a square cross section;

[0091] 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;

[0092] The intermediate shaft assembly 2 is provided with a boring tool and transmission device 3, a left and right cutter disc and transmission device 4, and an upper and lower cutter disc and transmission device 5 in sequence from left to right; the boring tool and transmission device 3 are provided with four groups of boring tools and are respectively placed outside the shell 1 corresponding to the four corners of the shell 1, and are used to process 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, and are used to process 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, and are used to process the upper and lower side surfaces in the square cavity of the workpiece 9.

[0093] 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 middle plate of the equipment through the tooling, and the tooling is controlled by the middle plate of the equipment to drive the workpiece to move, so that the square cavity of the workpiece passes through the tool combination device, and the workpiece passes through the upper and lower cutter discs 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 discs 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 on a common machine tool in one clamping to complete the fine processing in the cavity (the fine processing amount on one side is ≤0.5mm), and also realizing the assembly line operation of large parts, greatly improving the processing efficiency, and the production tasks can 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.

[0094] At the same time, the whole set of equipment is lubricated with butter 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 onto the equipment as a whole.

[0095] In a specific implementation: see Fig.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.

[0096] The two ends of the housing 1 are detachably fixedly connected with brackets 6, and the brackets 6 are used to connect with the guide rails on the machine tool equipment. The two end surfaces of the housing 1 are provided with lifting rings 7, and the housing 1 can be assembled and unassembled as a whole through four M20 lifting rings. In addition, in this embodiment, the lifting rings 7 do not exceed the left and right upper and lower surfaces of the housing 1, which is convenient for the workpiece and the tooling to be inserted or removed from the whole tool assembly device, and is easy to operate.

[0097] In a specific implementation: 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 boring tool transmission components. The boring tool main transmission spur gear 3-1 is fixed on the intermediate shaft component 2, and the four boring tool transmission components are installed corresponding to the four boring tool mounting holes 1-1.

[0098] Each group of boring tool transmission components includes a boring tool bearing seat 3-2, a boring tool bearing 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 cover 3-3;

[0099] 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;

[0100] The boring cutter transmission shaft II3-9 is supported in the boring cutter bearing seat 3-2 through the transmission shaft support bearing II3-10, and the boring cutter transmission shaft II3-9 is fixedly connected to the boring cutter transmission spur gear II3-13 through the spur gear spacer II3-11 and the spur gear flat key II3-12;

[0101] 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;

[0102] The boring cutter transmission shaft Ⅰ3-4, the boring cutter transmission shaft Ⅱ3-9 and the boring cutter transmission shaft Ⅲ3-14 are all parallel to the axis of the intermediate shaft assembly 2, the boring cutter transmission spur gear Ⅰ3-5 is meshed with the boring cutter main transmission spur gear 3-1, the boring cutter transmission spur gear Ⅰ3-5 is meshed with the boring cutter transmission spur gear Ⅱ3-13, the boring cutter transmission spur gear Ⅱ3-13 is meshed with the boring cutter transmission spur gear Ⅲ3-15, and a boring cutter assembly 3-20 is fixed on one end of the boring cutter transmission shaft Ⅲ3-14;

[0103] The boring tool bearing seat 3-2 and the boring tool transmission shaft III3-14 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.

[0104] In this embodiment, in view of the processing requirements of the four corners of the inner cavity of the forming cylinder, a Φ40mm boring cutter is used, and the intermediate shaft assembly 2 drives the boring cutter main transmission spur gear 3-1 with M=2, Z=94 to rotate, and the boring cutter main transmission spur gear 3-1 drives the boring cutter transmission spur gear I3-5 with M=2, Z=30 in each group of boring cutter transmission assemblies to rotate, and the boring cutter transmission spur gear I3-5 drives the boring cutter transmission spur gear II3-13 with M=2, Z=30 to engage, and the boring cutter transmission spur gear II3-13 drives the boring cutter transmission spur gear III3-15 with M=2, Z=15 to rotate, and the boring cutter transmission spur gear III3-15 drives the boring cutter transmission shaft III3-14 to rotate, and the boring cutter transmission shaft III3-14 drives The boring tool assembly 3-20 rotates to achieve tool cutting processing.

[0105] The set of components is fixed on the housing 1 through the boring cutter bearing seat, the boring cutter bearing gland, the hexagonal bolts and the positioning pins. Each spur gear is fixed and assembled by a tapered roller bearing, a spacer sleeve and a flat key to achieve flexible rotation without displacement or jamming.

[0106] Among them: See Figure 11-14As 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 pressed 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 on the boring head seat 3-20-2 by 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 by 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.

[0107] 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 seat structure.

[0108] In a specific implementation: 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;

[0109] 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;

[0110] 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 a cutter disc mounting bearing 4-6. The axis of the cutter disc component 4-8 intersects the axis of the intermediate shaft assembly 2 at right angles. 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; the cutter disc transmission bevel gear 4-3 is meshed with the left and right cutter disc main transmission bevel gears 4-2.

[0111] In this embodiment, in view of the processing requirements of the left and right sides of the inner cavity of the forming cylinder, a Φ270mm cutter disc transmission component is used. The intermediate shaft assembly 2 drives the left and right cutter disc main transmission bevel gears 4-2 of M=4, Z=32 to rotate, and the left and right cutter disc main transmission bevel gears 4-2 simultaneously drive two cutter disc transmission bevel gears 4-3 of M=4, Z=32 to rotate clockwise and counterclockwise respectively. The cutter disc transmission bevel gear 4-3 drives the corresponding Φ270mm cutter disc component 4-8 to rotate clockwise and counterclockwise respectively, and the tool on the cutter disc component 4-8 can perform cutting processing. Among them, the cutter disc component 4-8 can rotate flexibly without jamming through the support of the tapered roller bearing. In this device, the left and right cutter disc components rotate clockwise and counterclockwise respectively.

[0112] 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 straight blade seat assemblies 4-8-2 are evenly distributed on the circumference of the cutter disc body 4-8-1; each straight blade seat assembly 4-8-2 includes a straight blade seat 4-8-3, and the straight blade seat 4-8-3 is obliquely pressed on the cutter disc body 4-8-1 by a straight blade seat fixing bolt 4-8-5, and the straight blade seat left and right fine-tuning screws 4-8-7 for left and right fine-tuning and straight blade seat up and down fine-tuning screws 4-8-8 for up and down fine-tuning are provided on the straight blade seat 4-8-3, and a straight blade 4-8-4 is fixed to the straight blade seat 4-8-3 by a blade screw 4-8-6.

[0113] In this embodiment, in view of 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 pressed on the On the cutter disc; the 1604 front cutter seat assembly can be fine-tuned left and right by the M4×16mm left and right adjustment screws; the 1604 front cutter seat assembly can be fine-tuned up and down by the 1604-M3 up and down adjustment screws.

[0115] In a specific implementation: see Figure 26-29 As shown, the upper and lower cutter discs and the 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, an upper cutter disc component 5-3 and a lower cutter disc component 5-10;

[0116] 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, 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 are 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, 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.

[0117] In this embodiment, according to the processing requirements of the forming cylinder, Cutter drive 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 disc 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 gland, M12×45mm hexagon socket bolts and Pin fixed to the housing; O-ring It acts as a seal for lubrication of the inner cavity. 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 parts and The lower cutter disc component rotates and the tool on the disc performs cutting processing.

[0118] 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;

[0119] Each of the upper straight knife seat components 5-3-2 comprises an upper straight knife seat 5-3-3, which is obliquely pressed onto the upper cutter disc body 5-3-1 by means of an upper straight knife seat fixing bolt 5-3-5, and is provided with an upper straight knife seat left and right fine-tuning screw 5-3-7 for left and right fine-tuning and an upper straight knife seat up and down fine-tuning screw 5-3-8 for up and down fine-tuning, and an upper straight knife seat 5-3-4 is fixed onto the upper straight knife seat 5-3-3 by means of an upper blade screw 5-3-6;

[0120] The lower cutter disc component 5-10 comprises 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;

[0121] Each of the lower reverse tool seat components 5-10-2 includes a lower reverse tool seat 5-10-3, and the lower reverse tool seat 5-10-3 is obliquely pressed onto the lower blade 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. The 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.

[0122] In this embodiment, according to the processing requirements of the forming cylinder, the upper and lower cutter disc components are both Cutter head parts. 10 1604 positive knife seat assemblies are evenly installed on the upper knife disc; 10 1604 reverse blade seat assemblies are evenly installed on the lower blade disc; the 1604 positive blade seat assembly is composed of a 1604 positive blade seat, 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 reverse blade seat assembly is composed of a 1604 blade, an M5×15mm hexagonal 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 pressed in place by an M5×15mm hexagonal bolt. On the upper cutter disc; the 1604 reverse cutter seat assembly is tightened on the upper cutter disc by M5×15mm hexagonal bolts. On the lower knife disc; the 1604 blade is pressed on the 1604 positive knife seat or the 1604 reverse knife seat by the blade screw; the 1604 positive knife seat assembly and the 1604 reverse knife seat assembly are finely adjusted left and right by the M4×16mm left and right adjustment screws; the 1604 positive knife seat assembly and the 604 reverse knife seat assembly are finely adjusted up and down by the 1604-M3 up and down adjustment screws.

[0123] In a specific implementation: see Figure 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 through the intermediate shaft left bearing 2-4, and the end bearing seat 2-2 port 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 opening of the middle bearing seat 2-11 is pressed by the middle bearing upper cover 2-12;

[0124] The intermediate shaft 2-1 is provided with a boring cutter main drive spur gear 3-1, a left and right cutter main drive bevel gear 4-2, and an upper and lower cutter 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 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 a middle spacer sleeve 2-9; the upper and lower cutter 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.

[0125] In the above structure, the power transmitted by the machine tool reforming equipment drives the intermediate shaft to rotate, and the intermediate shaft drives the boring cutter and transmission device 3, the left and right cutter discs and transmission device 4, the upper and lower cutter discs and transmission device 5, the boring cutter main transmission spur gear 3-1, the left and right cutter disc main transmission bevel gear 4-2, and the upper and lower cutter disc main transmission bevel gear 5-2 to rotate, thereby realizing the transmission of power. In the above structure, an M10×1mm straight-through pressure injection oil cup is used to provide lubricating oil for the main transmission components.

[0126] In a specific implementation: see Figures 46-51As shown, it also includes an external movable tooling 8 for fixing a workpiece 9 with a square cavity on a support plate of a machine tool; the external movable tooling 8 is composed of an external tooling bottom 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 bottom plate 8-1, the two external tooling rear vertical plates 8-3 are fixedly connected perpendicularly to the rear edge of the upper surface of the external tooling bottom plate 8-1 and symmetrically, and the two external tooling reinforcement plates 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 plug holes 8-3-1, and the four corners of the external tooling rear buckle plate 8-4 are provided with plug blocks 8-4-1, and the plug blocks 8-4-1 are correspondingly inserted into the plug holes 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 plug holes 8-3-1, and the tightening screws 8-7 tighten the plug blocks 8-4-1 inserted into the plug holes 8-3-1, and an anti-pressure pad 8-6 is provided between the tightening screws 8-7 and the plug blocks 8-4-1;

[0127] The external tooling front vertical plate 8-2 and the external tooling rear plate 8-4 are both provided with holes that match 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 connecting surface of the workpiece 9, and a front tensioning plate 8-8 is arranged at the back connection of the connecting 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 connecting surface of the workpiece 9, and a rear tensioning plate 8-11 is arranged at the back connection of the connecting 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.

[0128] 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 buckle 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 buckle 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, and at the same time, the anti-compression 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.

[0129] The present invention enables the square cavity of a large workpiece to be clamped once on a common machine tool and completes the fine machining in the cavity, thereby realizing the assembly line operation of large parts, greatly improving the machining efficiency and ensuring that the production task is completed on schedule.

[0130] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0131] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 modes that can be understood by those skilled in the art.

Claims

1. A finishing tool assembly device for a square cavity, characterized in that: The invention comprises a shell (1), wherein the shell (1) is an elongated shell structure with a square cross section; 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); The intermediate shaft assembly (2) is provided with a boring tool and transmission device (3), a left and right cutter disc and transmission device (4), and an upper and lower cutter disc and transmission device (5) in sequence from left to right; the boring tool and transmission device (3) are provided with four groups of boring tools and are respectively arranged 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 arranged 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 arranged 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).

2. A finishing tool assembly device for a square cavity according to claim 1, 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 shell (1), and the brackets (6) are used to connect to guide rails on machine tool equipment; both end surfaces of the shell (1) are provided with lifting rings (7), and the lifting rings (7) do not exceed the left and right sides and the upper and lower sides of the shell (1).

3. A finishing tool assembly device for a square cavity according to claim 2, 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 the intermediate shaft component (2). The four sets of boring tool transmission components are installed corresponding to the four boring tool installation holes (1-1). Each group of boring tool transmission components comprises a boring tool bearing seat (3-2), a boring tool bearing 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 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 to one end of the boring cutter transmission shaft III (3-14); The boring tool bearing seat (3-2) and the boring tool transmission shaft III (3-14) are sealed via a sealing ring, and the boring tool bearing seat (3-2) is positioned and fixed via a boring tool bearing seat fixing bolt (3-19) and a boring tool bearing seat positioning pin (3-21).

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

7. A finishing tool assembly device for a square cavity according to claim 2, characterized in that: The upper and lower cutter discs and the transmission device (5) comprise 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), 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 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 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 finishing tool assembly device for square cavities according to claim 7, 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) is obliquely mounted and pressed on the upper blade disc body (5-3-1) through 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 and lower 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 on the upper straight blade seat (5-3-3) through 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 counter cutter seat assemblies (5-10-2) are evenly distributed on the circumference of the lower cutter disc body (5-10-1); Each of the lower reverse blade seat components (5-10-2) comprises a lower reverse blade seat (5-10-3), the lower reverse blade seat (5-10-3) being obliquely mounted and pressed onto the lower blade disc body (5-10-1) via a lower reverse blade seat fixing bolt (5-10-5), 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 finishing tool assembly device for a square cavity according to claim 2, 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 a 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 opening 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 drive spur gear (3-1), a left and right cutter main drive bevel gear (4-2), and an upper and lower cutter main drive bevel gear (5-2) for respectively driving the boring cutter 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); 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 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 a middle spacer sleeve (2-9); the upper and lower cutter 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.

10. The finishing tool assembly device for square cavity according to claim 1, characterized in that: The machine tool 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); 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) and symmetrically; the two external tool reinforcement plates (8-5) are vertically fixedly connected to the rear edge of the upper surface of the external tool base plate (8-1) and symmetrically; 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 plug holes (8-3-1); the four corners of the external tooling rear buckle plate (8-4) are both provided with plug blocks (8-4-1); the plug blocks (8-4-1) are correspondingly inserted into the plug holes (8-3-1); the upper and lower parts of the external tooling rear plate (8-3) are both screwed with tightening screws (8-7) corresponding to the plug holes (8-3-1); the tightening screws (8-7) tighten the plug blocks (8-4-1) inserted into the plug holes (8-3-1); and an anti-pressure pad (8-6) is provided between the tightening screws (8-7) and the plug blocks (8-4-1); The external tooling front plate (8-2) and the external tooling rear plate (8-4) are both provided with holes that match the shape of the cavity port of the workpiece (9); the external tooling front plate (8-2) is provided with bolt holes that correspond to the positions of the bolt through holes on the connection surface of the workpiece (9); during installation, a front tensioning plate (8-8) is provided at the back connection of the connection surface of the workpiece (9); the external tooling front 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) and the front positioning pin (8-10) are connected; 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); during installation, a rear tensioning plate (8-11) is arranged at the back connection of the connection surface of the workpiece (9); the external tooling rear buckle 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).

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