Full-automatic combined machining machine tool for high-locking bolts

Abstract

The invention discloses a full-automatic combined machining machine tool for high-lock bolts, relates to the technical field of high-lock bolt machining equipment, and solves the problems of unstable machining precision and unstable feeding. The composite machine tool comprises a vibration feeding mechanism, a counter sinking mechanism, a drilling mechanism, a square hole punching mechanism, a scrap removing mechanism, a plurality of feeding blocks and a conveying belt. Each feeding block comprises a supporting block used for supporting the head of a blank and a pressing block used for axially positioning the head of the blank, first guide grooves used for containing the rod portion of the blank are formed in the supporting blocks, and the first guide grooves in the multiple feeding blocks are sequentially connected end to end to form a material channel. The material channel inclines downwards in the direction from the feeding port to the discharging port, and each feeding block is provided with a sliding push rod. The feeding device has the advantages of being high in automation degree, simple, convenient and rapid in feeding and the like, and is suitable for feeding and conveying of titanium alloy or high-temperature alloy aviation screws which are complex in head shape and very light in density.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aviation high-lock bolt processing equipment, in particular to a full-automatic composite machining machine tool for high-lock bolts. BACKGROUND

[0002] The aviation bolt with a plum blossom hole (internal hexagonal flower shape) or a hexagonal hole at the tail end is a high-lock bolt, also known as a high-lock bolt or a locking bolt. It is a high-performance fastener very common and important in the aerospace industry, widely used in almost all places where high-reliability bolt connection is required, such as aircraft fuselages, wings, engine nacelles, hatches, interior panels, etc.

[0003] The high-lock bolt is usually a bolt-nut assembly. Its most core design feature is that there is an internal hexagonal hole (commonly known as a plum blossom hole / internal hexagonal flower shape or a standard hexagonal hole) at the tail end of the bolt for installation, and a nut with a neck-breaking groove is provided. The internal hexagonal hole at the tail end of the high-lock bolt is processed by a machine tool.

[0004] In the prior art, such as the high-lock bolt tail end full-process machining machine of publication number CN114750001A, all workpieces in all workstations are simultaneously moved and fed by the overall transplanting mechanism, i.e. only when all workpieces in all workstations are processed and the workpieces are pushed out and introduced into the translation mechanism in the patent application Figure 6 , can all workpieces be synchronously moved to the next workstation by the translation mechanism to realize the movement of the workpieces between the machining stations. This process can only be uniformly pushed out from the machining positioning position after the slowest machining station completes processing, and then pushed into the translation slot Figure 6 to realize overall translation to the next workstation to perform full-automatic centering, chamfering, pre-opening before profiling, profiling, and removal of residual iron chips. This process is realized by each cylinder, and each cylinder needs to send an execution signal to the position before the next action can be performed. Therefore, the processing efficiency of the machining machine using this mechanism is only 480-720 pieces per hour, which is as slow as the comprehensive processing efficiency of a purchased drilling machine with one operator to realize drilling and iron removal, and a punching machine with one operator. The processing efficiency of the aviation high-lock bolt is obviously unable to meet the demand of the actual processing rhythm.

[0005] The bolt tail integrated processing equipment of publication number CN120533547A has the problem that the workpieces are conveyed by a large inclination angle of the material track after being discharged from the hopper, especially for small-specification countersunk titanium alloy aviation screws with a head taper angle of 100-120 degrees, which will be stacked together and cause jamming. In addition, the stacked taper angles also cause the workpiece to be inclined and jammed during feeding or unstable positioning. SUMMARY

[0006] The application aims to solve the above problems, and designs a high-lock bolt full-automatic composite machining machine tool to solve the problems of unstable machining precision and unstable feeding.

[0007] To achieve the above object, the technical scheme of the application is a high-lock bolt full-automatic composite machining machine tool, comprising: A vibrating feeding mechanism is used for feeding the blank of the high-lock bolt. A taping mechanism is used for tapping and positioning hole machining on the tail end of the blank. A drilling mechanism is used for drilling machining based on the positioning hole tapped on the tail end of the blank. A square hole punching mechanism is used for punching square hole or plum blossom hole machining on the bottom hole punched on the tail end of the blank. A chip removing mechanism is used for cleaning the iron chips on the bottom of the hole punched on the tail end of the blank. A plurality of feeding blocks are arranged above the taping mechanism, the drilling mechanism, the square hole punching mechanism and the chip removing mechanism, respectively, and a first material guiding groove for guiding the conveying of the blank is formed on each feeding block. A conveying belt is arranged at the head and tail ends of the conveying belt, respectively, and the discharge port of the vibrating feeding mechanism and the feeding port of the first material guiding groove on the feeding block above the taping mechanism are connected to each other, so as to convey the blank from the vibrating feeding mechanism to the first material guiding groove on the feeding block. The feeding block comprises a supporting block for supporting the head of the blank and a pressing block for axially positioning the head of the blank, the first material guiding groove for accommodating the rod part of the blank is formed on the supporting block, the first material guiding grooves on the plurality of feeding blocks are connected to each other in sequence to form a material channel, and the material channel is inclined downward from the feeding port to the discharge port, the pressing block is arranged above the supporting block, the rod part of the blank can be embedded into the material channel and can slide along the material channel, the head of the blank can be embedded into the gap between the supporting block and the pressing block, so that the blank does not fall off the material channel when sliding along the material channel, a slidable push rod is arranged on each feeding block, the front end face of the push rod is protruded to form a blocking part on the side close to the conveying direction, the front end of the push rod can cross into the material channel to block the blank and clamp the blank.

[0008] Further, the conveying belt comprises horizontally and oppositely arranged and spacing-adjustable first and second guide rails, two first synchronous pulleys rotatably connected at the two ends of the first guide rail, and a transmission belt meshing with the two first synchronous pulleys at the two ends, respectively, the first and second guide rails form a material guiding groove for accommodating the rod part of the blank, the head of the blank can be supported on the first and second guide rails, the transmission belt is wrapped around the first guide rail, and the transmission belt can drive the blank to slide backward along the material guiding groove when rotating.

[0009] Further, a second synchronous pulley is arranged below the first synchronous pulley, and a driving motor is connected to the second synchronous pulley, and the transmission belt is engaged with the second synchronous pulley.

[0010] Further, spacing adjustment mechanisms are arranged at both ends of the first guide rail and the second guide rail, and the spacing adjustment mechanisms comprise guide rail fixing blocks, adjustment frames, adjustment screws, and driving blocks, the first guide rail and the second guide rail are fixed to the guide rail fixing blocks at both ends respectively, and each of the adjustment frames is arranged at the opposite side of the two ends of the first guide rail, and a sliding groove is formed in each of the adjustment frames, and the driving blocks are slidably arranged in the sliding grooves, and the two driving blocks are fixedly connected to the guide rail fixing blocks corresponding to the two ends of the first guide rail respectively, and the adjustment screws are rotatably connected to the adjustment frames and are threadedly connected to the driving blocks, so as to control the driving blocks to slide along the sliding grooves, thereby driving the first guide rail to move close to or away from the second guide rail.

[0011] Further, two discharge pieces are arranged at the discharge port of the guide chute, and the two discharge pieces are respectively fixedly arranged at the ends of the first guide rail and the second guide rail close to the discharge port in an inclined manner, and the guide chute formed between the two discharge pieces is connected to the material channel on the feeding block.

[0012] Further, the counter sinking mechanism comprises a counter sink, a rotation control assembly for controlling the rotation of the counter sink, and a first feed control assembly for controlling the feed motion of the counter sink. The drilling mechanism comprises a drill bit, a rotation control assembly for controlling the rotation of the drill bit, and a first feed control assembly for controlling the feed motion of the drill bit. The square hole punching mechanism comprises a punch and a second feed control assembly for controlling the feed motion of the punch. The chip removal mechanism comprises a milling head, a rotation control assembly for controlling the rotation of the milling head, and a first feed control assembly for controlling the feed motion of the milling head. The counter sink, the drill bit, the punch, and the milling head are perpendicular to the conveying direction of the material channel.

[0013] Further, a connecting rod driving mechanism is arranged above the feeding block, and the connecting rod driving mechanism comprises a protection frame, a driving cylinder fixedly arranged on the protection frame, an extension rod connected to the output end of the driving cylinder, and a connecting rod hingedly connected to the upper end of the extension rod, and the middle part of the connecting rod is rotatably connected to the protection frame, and the lower end of the connecting rod is configured to be able to drive the push rod to slide.

[0014] Further, the composite machine tool further comprises: A machine body is formed with a machining space, and the counter sinking mechanism, the drilling mechanism, the square hole punching mechanism, the chip removal mechanism, and the plurality of feeding blocks are located in the machining space, the vibration feeding mechanism is located outside the machine body, and the conveying belt extends into the machining space. The waste collecting mechanism is arranged at the bottom of the machine body and is used for collecting the waste generated during the machining process. The material distributing mechanism is arranged at the bottom of the machine body and is used for collecting the waste generated during the machining process.

[0015] Further, the material distributing mechanism comprises a lower hopper, a rotatable distributing plate arranged in the lower hopper, and a distributing cylinder for driving the rotation of the distributing plate.

[0016] Further, the inner wall of the machining space is provided with a mounting plate, and the hole counter sinking mechanism, the hole drilling mechanism, the square hole punching mechanism, the chip removing mechanism and the plurality of feeding blocks are all arranged on the mounting plate in an inclined manner.

[0017] Compared with the prior art, the present application has the following advantages: The present application has the advantages of high automation, simple, convenient and fast feeding, etc.

[0018] The vibration feeding mechanism orderly delivers the blanks to the conveying belt, and the conveying belt orderly delivers the blanks to the first guide grooves on the feeding blocks which are in abutment with the conveying belt.

[0019] When the blank reaches the corresponding work station, the push rod can cross into the guide groove and push and clamp the blank, and then automatically complete the hole counter sinking, the pre-drilling before the hole punching, the hole punching (i.e. square hole punching) and the removal of the residual iron chips.

[0020] The blocking part at the front end of the push rod can block the blank, preventing it from continuing to slide backward after reaching directly above the corresponding processing mechanism. After a certain process is completed, the blank will enter the next process, and the unprocessed blank will also automatically enter the station of the previous process. There will be no empty situation in a certain process or at a certain time, which will cause unreasonable processing equipment and affect production efficiency. Moreover, only one blank will be stored in the guide slot on each feeding block, and the blanks will not contact each other and will not be stacked together, which is especially suitable for feeding and conveying of aviation screws with complex head type, light density titanium alloy or heavy density high-temperature alloy aviation screws.

[0021] The workpiece can be automatically transferred without a special cylinder pushing device after being processed at the corresponding station, greatly improving the transfer and positioning clamping efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the overall structure of the high-lock bolt full-automatic composite processing machine tool; Figure 2 is a schematic view of the structure of the high-lock bolt full-automatic composite processing machine tool from another perspective; Figure 3 is a schematic view of the cooperation of the vibration feeding mechanism, the conveyor belt, the feeding block and the processing mechanism; Figure 4 is a schematic view of the structure of Figure 3 from another perspective; Figure 5 is a schematic view of the cooperation of the vibration feeding mechanism and the conveyor belt.

[0023] Figure 6 is a schematic view of the structure of the conveyor belt; Figure 7 is a schematic view of the structure of Figure 6 without the guide cover plate; Figure 8 is a schematic view of the installation structure of the discharge sheet at the rear end of the conveyor belt; Figure 9 is a schematic view of the structure of Figure 9 at A; Figure 10 is a schematic view of the installation of the hole reaming mechanism, the drilling mechanism, the square hole punching mechanism, the chip removing mechanism and the four feeding blocks on the installation plate; Figure 11 is a schematic view of the structure of the hole reaming mechanism, the drilling mechanism, the square hole punching mechanism and the chip removing mechanism; Figure 12 is a schematic view of the shaft side of the hole reaming mechanism; Figure 13 is a sectional view of the hole reaming mechanism; Figure 14 is a schematic view of the shaft side structure of the punching mechanism; Figure 15 is a sectional view of the punching mechanism; Figure 16 is a structural schematic diagram of the tool holder seat; Figure 17 is a structural schematic diagram of the connecting rod driving mechanism and the feeding block when they are matched; Figure 18 is a bottom structural schematic diagram of the feeding block; Figure 19 is a shaft side structural schematic diagram of the feeding block; Figure 20 is a mounting structural schematic diagram of the first supporting block, the second supporting block and the third supporting block of the bottom of the feeding block; Figure 21 is a schematic diagram of the feeding block when the fixing seat, the tool fixing block and the X-axis adjusting follower block are removed; Figure 22 is a schematic diagram of the first supporting block, the second supporting block, the third supporting block and the push rod when they are matched; Figure 23 is a structural schematic diagram of the first supporting block; Figure 24 is a structural schematic diagram of the third supporting block; Figure 25 is a bottom view of the feeding block and the push rod when they are matched when the workpiece has not been clamped by the push rod; Figure 26 is a bottom view of the feeding block and the push rod when they are matched when the workpiece has been clamped by the push rod; Figure 27 is a structural schematic diagram of the push rod; Figure 28 is a structural schematic diagram of the distributing mechanism.

[0024] In the figure, 1, machine body; 2, vibrating feeding mechanism; 3, conveying belt; 301, first guide rail; 3011, second guide groove; 302, second guide rail; 303, transmission belt; 304, first synchronous pulley; 305, second synchronous pulley; 306, tensioning wheel; 307, spacing adjusting mechanism; 3071, entry adjusting frame; 3072, guide rail fixing block; 3073, adjusting screw; 3074, guide cover plate; 3075, locking piece; 3076, driving block; 3077, exit adjusting frame; 3078, adapter block; 308, driving motor; 309, discharging piece; 310, cover shell; 311, pressing plate; 312, support plate; 313, angle plate; 314, fixing plate; 315, adjusting block; 4, reaming mechanism; 401, reamer bit; 402, rotation control assembly; 4021, second servo motor; 4022, mandrel; 403, first feeding control assembly; 4031, first housing; 4032, second housing; 4033, guide sleeve; 4034, first servo motor; 4035, anti-rotation block; 40351, roller; 4036, rotary end cover; 4037, feeding end cover; 4038, guide key; 4039, screw rod; 4040, guide shaft sleeve; 404, tool shank seat; 4041, inner hexagonal bolt; 5, drilling mechanism; 501, drill bit; 6, square hole punching mechanism; 601, punch; 602, second feeding control assembly; 6021, third housing; 6022, speed reducer; 6023, third servo motor; 6024, guide mandrel sleeve; 6025, adapter sleeve; 7, chip removing mechanism; 701, milling head; 8, feeding block; 801, fixing seat; 802, tooling fixing block; 803, locking bolt; 804, first supporting block; 8041, first guide groove; 80411, first groove; 80412, second groove; 80413, third groove; 80401, air blowing hole; 805, second supporting block; 806, third supporting block; 8061, material blocking piece; 807, pressing block; 808, cap head pressing piece; 809, guide rail fixing piece; 810, X-axis adjusting follower block; 8101, X-axis adjusting limiting block; 811, X-axis adjusting block; 812, guide fixing block; 813, Y-axis adjusting wheel; 814, X-axis adjusting wheel; 815, identification piece; 816, Y-axis fixing block; 817, Y-axis positioning block; 9, material distributing mechanism; 901, discharging hopper; 902, material distributing cylinder; 903, material distributing plate; 904, discharging pipe; 10, chip collecting mechanism; 11, oil mist purifier; 12, material rack; 13, material box; 14, oil discharging groove; 15, mounting plate; 16, connecting rod driving mechanism; 161, protection frame; 162, driving cylinder; 163, extension rod; 164, coupling sleeve; 165, connecting rod; 166, pin shaft fixing block; 167, pin shaft; 17, push rod; 171, extrusion surface; 172, arc-shaped groove; 173, blocking part; 18, protective cover. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0026] The preferred embodiment of the present application provides a full-automatic composite machining tool for high-lock bolts, which integrates all machining procedures of high-lock bolts and can automatically complete feeding, machining, discharging and screening.

[0027] Specifically, referring to Figure 1 , Figure 3 , the composite machining tool mainly comprises a machine body 1, a vibrating feeding mechanism 2, a counter-sinking mechanism 4, a drilling mechanism 5, a square hole punching mechanism 6, a chip removing mechanism 7, a plurality of feeding blocks 8, a conveying belt 3, a chip collecting mechanism 10, a distributing mechanism 9 and the like.

[0028] The machine body 1 is integrally cast, which has the advantages of high strength and strong corrosion resistance. The machine body 1 is hollow inside to form a machining space, and all machining procedures of workpieces are completed inside the machining space. The front of the machine body 1 is provided with two slidable sliding doors (hidden in the drawings) to facilitate manual feeding and observing the machining status of the workpieces through the observation windows on the sliding doors.

[0029] The machine body 1 is externally provided with a numerical control screen 19 to program the tool and send instructions to the corresponding mechanisms to machine the workpieces.

[0030] As shown in Figure 3 , Figure 4 , the vibrating feeding mechanism 2 adopts a vibrating disc feeding. The vibrating disc orderly conveys the scattered high-lock bolt blanks from the discharge port in a vibrating manner. The feeding port of the conveying belt 3 is connected with the discharge port of the vibrating disc.

[0031] The conveying belt 3 and the vibrating disc in the embodiment are both horizontally placed. The vibrating disc is fixedly installed on a bracket outside the machine body 1. The conveying belt 3 extends to the inside of the machine body 1 after being connected with the vibrating disc. A cover (hidden in the drawings) is arranged outside the vibrating disc, and the cover is provided with a small door for feeding the vibrating disc.

[0032] As shown in Figures 5-9 , the conveying belt 3 mainly comprises a first guide rail 301, a second guide rail 302, a transmission belt 303, two first synchronous pulleys 304, a second synchronous pulley 305, a driving motor 308 and two spacing adjusting mechanisms 307 respectively located at the two ends of the first guide rail 301 and the second guide rail 302.

[0033] The first guide rail 301 and the second guide rail 302 are oppositely arranged and spaced apart by a certain distance to form a material guide groove, i.e., a second material guide groove 3011. The width of the second material guide groove 3011 is matched with the diameter of the rod part of the high-lock bolt blank. The spacing adjusting mechanism 307 is used to adjust the spacing between the first guide rail 301 and the second guide rail 302, i.e., the width of the second material guide groove 3011. The rod part of the blank is embedded into the second material guide groove 3011, and the head part (i.e., the cap head of the high-lock bolt) is supported by the first guide rail 301 and the second guide rail 302.

[0034] The first synchronous pulley 304 is a driven pulley, and two driven pulleys are respectively rotationally connected at two ends of the first guide rail 301. The transmission belt 303 is annular, and two ends thereof are respectively engaged with two transmission gears.

[0035] The second synchronous pulley 305 is a driving pulley. The driving pulley is rotationally connected to the inner side of the shell 310 fixed at the middle region of the bottom of the first guide rail 301. The driving motor 308 is fixedly installed on the outer side of the shell 310 and is in transmission connection with the driving pulley, i.e., the output end of the driving motor 308 is connected with the second synchronous pulley 305 to drive the driving pulley to rotate. Above the left upper side and the right upper side of the driving pulley, there are respectively provided a tension pulley 306, which is a light pulley and is rotationally connected to the shell 310 through a pin shaft 167. The lower edge of the transmission belt 303 passes above the two tension pulleys 306 and is engaged with the driving pulley.

[0036] The spacing between the two tension pulleys 306 is adjustable. On the shell 310, there are two horizontally extending waist-shaped holes, and the two tension pulleys 306 are respectively rotationally connected in the two waist-shaped holes through the pin shaft 167. The other end of the pin shaft 167 is threadedly connected with a bolt, and by loosening or tightening the bolt, the spacing between the two tension pulleys 306 is adjusted, so that the tension of the transmission belt 303 is adjusted.

[0037] The upper surface of the first guide rail 301 is downwardly recessed to form a groove, and the upper edge of the transmission belt 303 extends along the groove. Correspondingly, the upper surface of the second guide rail 302 is also downwardly recessed to form a groove, and a thin plate is arranged in the groove. The upper surface of the thin plate is substantially flush with the upper surface of the transmission belt 303.

[0038] After the rod part of the blank is embedded into the second material guide groove 3011, the head part of the blank is supported on the transmission belt 303 and the thin plate. The upper surface of the thin plate is smooth. By driving the driving motor 308 to drive the driving pulley (i.e., the second synchronous pulley 305) to rotate, the transmission belt 303 is driven to rotate, and finally the blank is driven to slide along the second material guide groove 3011 backward, so that the conveying of the blank is completed.

[0039] A protective cover plate is provided on the outside of the cover 310. The protective cover plate is fixedly installed on the cover 310 by bolts, which protects the second synchronous pulley 305.

[0040] See Figure 6 , Figure 7 The spacing adjustment mechanism 307 located at the inlet of conveyor belt 3 mainly consists of a guide rail fixing block 3072, an inlet fixing frame, an inlet adjusting frame 3071, an adjusting screw, and a drive block 3076. The feed ends of the first guide rail 301 and the second guide rail 302 are respectively fixed to the two guide rail fixing blocks 3072. The guide rail fixing block 3072 connected to the first guide rail 301 is fixed to the inlet fixing frame, and the guide rail fixing block 3072 connected to the second guide rail 302 is fixedly connected to the drive block 3076.

[0041] The inlet adjustment bracket 3071 is located outside the second guide rail 302. A groove is located on the side of the inlet adjustment bracket 3071, and a through-groove is formed within this groove. A drive block 3076 is slidably connected to this through-groove. The sliding direction of the drive block 3076 is consistent with the spacing direction of the first guide rail 301 and the second guide rail 302. An adjusting screw 3073 passes through the inlet adjustment bracket 3071 and is threadedly connected to the drive block 3076 within the through-groove. The adjusting screw 3073 and the inlet adjustment bracket 3071 are rotatably connected; the adjusting screw will not move axially relative to the inlet adjustment bracket 3071. The drive block 3076, confined by the through-groove, will not rotate. By rotating the adjusting screw 3073, the drive block 3076 slides along the through-groove, thereby moving the second guide rail 302.

[0042] A knob is provided at the outer end of the adjusting screw 3073 to allow the adjusting bolt to be rotated.

[0043] A guide cover plate 3074 is provided in the groove on the side of the adjustment frame at the entrance. The guide cover plate 3074 is fixedly installed on the adjustment frame 3071 at the entrance by bolts, and at the same time, the drive block 3076 is limited in the slide groove.

[0044] The drive block 3076 has an oblong hole extending along the sliding direction. A locking member 3075 is disposed in the oblong hole. The locking member 3075 passes through the oblong hole and is threadedly connected to the adjustment bracket 3071 at the inlet. By rotating the locking member 3075, the locking member 3075 will press or release the drive block 3076, thereby limiting the movement of the drive member.

[0045] Correspondingly, the guide cover 3074 has a pass-through hole to facilitate the passage of the locking member 3075.

[0046] See also Figure 6 , Figure 7The spacing adjusting mechanism 307 at the outlet of the conveying belt 3 is mainly composed of guide rail fixing blocks 3072, adapter blocks 3078, outlet adjusting frames 3077, adjusting screws and driving blocks 3076. The outlet ends of the second guide rails 302 are fixed on the two guide rail fixing blocks 3072 respectively. The two guide rail fixing blocks 3072 are connected with the adapter blocks 3078 and the driving blocks 3076 respectively.

[0047] The driving blocks 3076 and the adjusting screws 3073 are provided with two respectively corresponding to the first guide rails 301 and the second guide rails 302. Correspondingly, the outlet adjusting frames 3077 are also provided with two sliding grooves, the two driving blocks 3076 are slidingly connected in the two sliding grooves respectively, and one end of the two adjusting screws 3073 is threadedly connected with the two driving blocks 3076 respectively. The mounting mode is the same as the above, which will not be described in detail here.

[0048] The outlet adjusting frames 3077 extend horizontally on one side and across the top of the first guide rails 301 and the second guide rails 302. The driving block 3076 corresponding to the first guide rails 301 is also located above the guide rails, and the driving block 3076 is connected with the adapter block 3078 for adjusting the position of the first guide rails 301. The other driving block 3076 is located on the lower side of the outlet adjusting frames 3077 for adjusting the position of the first guide rails 301.

[0049] The two spacing adjusting mechanisms 307 at the inlet and the outlet of the conveying belt 3 are matched to adjust the spacing between the first guide rails 301 and the second guide rails 302, so as to adapt to high-lock bolt blank parts of different diameters.

[0050] As shown in Figure 8 , Figure 9 , a discharging piece 309 is arranged at the outlet of the first guide rails 301 and the second guide rails 302 respectively. The two discharging pieces 309 are arranged oppositely and inclined downward. A guide groove is also formed between the two discharging pieces 309 for guiding and conveying the blank. The discharging piece 309 is used for supporting the head of the blank.

[0051] A pressing plate 311 is arranged above one of the discharging pieces 309, and the inclination angle of the pressing plate 311 is consistent with that of the corresponding discharging piece 309. The pressing plate 311 is fixedly installed on the bottom of the adjusting block 315. The pressing plate 311 is spaced apart from the discharging piece 309 by a certain distance for pressing and axially positioning the head of the blank.

[0052] An angle plate 313 is arranged on the outer side of the adjusting block 315, and the angle plate 313 is fixedly installed on the front end of the support plate 312 by bolts. A fixed plate 314 is arranged above the adjusting block 315, and the fixed plate 314 is fixedly installed above the support plate 312 by bolts.

[0053] A screw with a rotating knob is arranged on the fixed plate 314, which is rotationally connected with the fixed plate 314, and the lower end of the screw is threadedly connected with the screw hole on the upper surface of the adjusting block 315. The angle plate 313 and the support plate 312 limit the rotation of the adjusting block 315, so that the adjusting plate moves up and down by rotating the screw, thereby driving the pressing plate 311 to move up and down, so as to adjust the distance between the pressing plate 311 and the discharge piece 309, and adapt to different specifications of high-lock bolts.

[0054] A waist-shaped hole extending upward and downward is formed in the angle plate 313, and a screw with a rotating knob is arranged in the waist-shaped hole, which is threadedly connected with the side surface of the adjusting block 315. When the position of the discharge piece 309 is adjusted, the screw is rotated, which pulls the adjusting block 315 tightly, so that the adjusting block 315 is tightly attached to the angle plate 313, to prevent the adjusting block 315 from moving up and down.

[0055] As shown in Figure 10 four upper feeding blocks 8 are arranged, which correspond to the counterboring mechanism 4, the drilling mechanism 5, the square hole punching mechanism 6 and the chip removing mechanism 7 respectively and are located above the corresponding mechanisms. The counterboring mechanism 4, the drilling mechanism 5, the square hole punching mechanism 6 and the chip removing mechanism 7 are arranged in sequence, and the four upper feeding blocks 8 are arranged close to each other and gradually inclined downward from the counterboring mechanism 4 to the chip removing mechanism 7. The counterboring mechanism 4, the drilling mechanism 5, the square hole punching mechanism 6, the chip removing mechanism 7 and the four upper feeding blocks 8 are all mounted on the mounting plate 15 fixed on the inner wall of the machining space.

[0056] The guide grooves formed between the two discharge pieces 309 are connected with the first guide grooves 8041 on the upper feeding block 8.

[0057] In the existing machine tool, two motors, a speed reducer and a screw are combined to adjust the coaxiality of X-Y direction by digital operation screen, which has obvious defects. After adjustment, the screw is fixed at the set position, but when subjected to a large impact force such as square hole punching or a large impact force such as drill bit collision, the screw will deform and move, thereby completely losing the reference and precision, which is the reason why this process is applied to the machining of aviation screw products with low coaxiality requirement. Although it seems to realize digital coaxiality adjustment, it is not suitable for the stable machining of aviation material screws with large force and high precision. The upper feeding block 8 of the present application completely solves this problem.

[0058] As shown in Figures 18-21 the upper feeding block 8 mainly comprises a fixing seat 801, a tool fixing block 802, a first supporting block 804, a second supporting block 805, a third supporting block 806, an X-axis adjusting follower block 810, an X-axis adjusting block 811, a pressing block 807, a Y-axis fixing block 816, a guide rail fixing piece 809, a Y-axis adjusting wheel 813, an X-axis adjusting wheel 814 and the like.

[0059] The back of the fixed seat 801 is generally fixed to the mounting plate 15 by bolts. The fixed seat 801 has an L-shaped cross section, and the tool fixing block 802 is installed in the groove at the bottom of the fixed seat 801. A locking bolt 803 is provided on the fixed seat 801, the lower end of the locking bolt 803 is screwed into the threaded sleeve fixed on the tool fixing block 802, and the tool fixing block 802 is fixed on the fixed seat 801 by the locking bolt 803, which facilitates the quick installation and disassembly of the tool fixing block 802 and all components installed on the tool fixing block 802.

[0060] The tool fixing block 802 also has an L-shaped cross section, the Y-axis fixing block 816 is installed in the groove at the bottom of the tool fixing block 802, and the first supporting plate is installed at the bottom of the Y-axis fixing block 816. The guide rail fixing plate 809 is located on the front side of the Y-axis fixing block 816 and is fixed by bolts in the groove at the bottom of the tool fixing block 802. The second supporting block 805 and the third supporting block 806 are both installed at the bottom of the guide rail fixing plate 809.

[0061] The first supporting block 804 and the second supporting block 805 are both located on the front side of the first supporting block 804, and the second supporting block 805 and the third supporting block 806 are oppositely arranged. The first supporting block 804 has a shape similar to a T letter, and a portion of the front side of the first supporting block 804 is missing, forming an avoidance area, so that the front side of the first supporting block 804 has a Z-shaped surface. The third supporting block 806 is located in the avoidance area.

[0062] Referring to Figure 22 The Z-shaped front side of the first supporting block 804 cooperates with the side surfaces of the second supporting block 805 and the third supporting block 806 to form a Z-shaped material guiding groove, i.e., the first material guiding groove 8041, between the three supporting blocks. The first material guiding groove 8041 is composed of a first groove 80411, a second groove 80412, and a third groove 80413, and the three grooves are connected end to end in a Z shape. The second supporting block 805 and the third supporting block 806 are spaced apart by a certain distance to form a through slot, so that the push rod 17 can pass through the through slot and enter the second groove 80412. The first groove 80411 and the second groove 80412 are parallel, and the first groove 80411 and the third groove 80413 are not perpendicular to the second groove 80412, but have an acute angle therebetween.

[0063] Since the upper feeding block 8 is inclined as a whole, the first material guiding groove 8041 is also inclined. Therefore, when the blank enters the first groove 80411, it will slide down along the inclined surface to the end of the first groove 80411, which is composed of the outer wall of the third supporting block 806, and then the push rod 17 will pass through the through slot to push the blank into the second groove 80412 and to the end of the second groove 80412.

[0064] Between the second slot 80412 and the third slot 80413, the joint between the inner walls of the adjacent two sides of the front side of the first supporting block 804 has an arc surface which is adapted to the shape of the blank rod.

[0065] Referring to Figure 27 Correspondingly, the front end of the push rod 17 has a pressing surface 171. In this embodiment, the pressing surface 171 is an arc surface which is similar to an arc shape and is formed by multiple planes. When the pressing surface 171 of the pressing member presses the blank, the resultant force of the pressing force of the push rod 17 on the blank is directed towards the arc surface between the second slot 80412 and the third slot 80413, so that the blank is clamped more tightly and cannot move.

[0066] In other embodiments, the pressing surface 171 can also be a quarter circular arc surface.

[0067] A blocking portion 173 is formed on the side of the front end surface of the push rod 17 which is close to the third supporting block 806, the blocking portion extends into and blocks the blank from being conveyed backwards, preventing the blank from continuing to slide backwards along the first guide slot 8041 after reaching directly above the corresponding machining mechanism.

[0068] A guide slot is formed in the bottom of the guide rail fixing plate 809, and the push rod 17 is horizontally slidably connected with the guide slot. The front end extension of the push rod 17 is inserted into the insertion slot between the second supporting block 805 and the third supporting block 806. A anti-disengagement pressing plate is arranged on each side of the guide slot in the bottom of the guide rail fixing plate 809, the anti-disengagement pressing plate is fixed to the bottom of the guide rail fixing plate 809 by bolts, and the push rod 17 is limited in the guide slot by the anti-disengagement pressing plate, preventing the push rod 17 from disengaging from the guide slot at the bottom. The push rod 17 can only slide horizontally along the guide slot.

[0069] The width direction of the first slot 80411 and the third slot 80413 is defined as the Y-axis direction, and the width direction of the second slot 80412 is defined as the X-axis direction.

[0070] As shown in Figure 25 The X-axis adjustment follower 810 and the X-axis adjustment block 811 are respectively arranged on the two sides of the first supporting block 804. The first adjusting hole is formed on the side of the first supporting block 804 which is away from the second supporting block 805 and the third supporting block 806, the first adjusting hole extends along the Y-axis direction, the Y-axis adjusting wheel 813 is located in the first adjusting hole, and the shaft of the Y-axis adjusting wheel 813 is threadedly connected with the Y-axis fixed block 816. The second adjusting hole is formed on the X-axis adjustment block 811, the second adjusting hole extends along the X-axis direction, the X-axis adjusting wheel 814 is located in the second adjusting hole, and the shaft of the X-axis adjusting wheel 814 is threadedly connected with the tool fixing block 802.

[0071] The surface of the first adjusting hole in contact with the Y-axis adjusting wheel 813 is a plane, which is consistent with the X-axis direction. The Y-axis adjusting wheel 813 is tangent to the plane, and the Y-axis adjusting wheel 813 is pressed when rotating. The surface of the second adjusting hole in contact with the X-axis adjusting wheel 814 is a plane, which is consistent with the Y-axis direction. The X-axis adjusting wheel 814 is tangent to the plane, and the X-axis adjusting wheel 814 is pressed when rotating.

[0072] The Y-axis adjusting wheel 813 and the X-axis adjusting wheel 814 in the embodiment are eccentric wheels. The eccentric wheel includes a first shaft, a second shaft, and a wheel body. The first shaft and the second shaft are respectively located on the two sides of the axial direction of the wheel body. The first shaft and the second shaft are coaxial, but are not coaxial with the wheel body. The distance between the first shaft and the second shaft and the axis of the wheel body is tens of silk, so the adjustment is also fine adjustment. The first shaft is threadedly connected with the Y-axis fixed block 816. The end of the second shaft has an internal hexagonal hole. The second shaft is driven by a wrench to eccentrically rotate the wheel body and press the first supporting block 804, so that the first supporting block 804 moves along the Y-axis direction and fine adjusts the width of the first groove 80411 and the third groove 80413.

[0073] Similarly, rotating the eccentric wheel in the X-axis direction will press the X-axis adjusting block 811. The X-axis adjusting block 811 protrudes outward in the middle area of the side facing the Y-axis fixed block 816, forming a pressing part with a plane. The pressing part will press the Y-axis fixed block 816, so that the Y-axis fixed block 816 moves along the X-axis direction to the side where the X-axis adjusting block 810 is located, and fine adjusts the width of the second groove 80412.

[0074] In other technical solutions, the Y-axis adjusting wheel 813 and the X-axis adjusting wheel 814 can also use cams.

[0075] The X-axis adjusting block 811 is fixed on the bottom of the tool fixed block 802 by bolts. The bolt hole on the X-axis adjusting block 811 is a clearance fit with the bolt, so as to leave a margin for the X-axis movement of the X-axis adjusting block 811. The bolt passes through the bolt hole and is threadedly connected with the tool fixed block 802.

[0076] The first supporting block 804 has a plurality of bolt holes, which are counterbores. The first supporting block 804 is fixed on the bottom of the Y-axis fixed block 816 by a countersunk head bolt. The countersunk head bolt and the bolt hole on the first supporting block 804 are a clearance fit, so as to leave a sufficient margin for the fine adjustment of the movement of the first supporting block 804. The countersunk head bolt passes through the bolt hole and is threadedly connected with the Y-axis fixed block 816.

[0077] A Y-axis positioning block 817 is arranged in the bottom groove of the tool fixing block 802 on the side of the Y-axis fixing block 816 close to the Y-axis adjusting wheel 813, and is in close contact with the side surface of the Y-axis fixing block 816 to position the Y-axis direction of the Y-axis positioning block 817. The Y-axis positioning block 817 is spaced apart from the first supporting block 804, and two bolts are threadedly connected to the Y-axis positioning block 817, which pass through the Y-axis positioning block 817 from the side and abut against the first supporting block 804, so that after the Y-axis adjusting wheel 813 completes the fine adjustment movement of the Y-axis direction of the first supporting block 804, the Y-axis direction of the first supporting block 804 is positioned by rotating the bolts.

[0078] The X-axis adjusting follower block 810 is fixed to the bottom of the tool fixing block 802 by bolts, and the tool fixing block 802 is provided with a guide fixing block 812 embedded into the grooves in the side surfaces of the tool fixing block 802 and the X-axis adjusting follower block 810. The upper and lower ends of the guide fixing block 812 are each threadedly connected to a bolt, the upper end of the guide fixing block 812 is fixedly connected to the tool fixing block 802 by a bolt, and the bolt on the lower side of the guide fixing block 812 is threadedly connected to the guide fixing block 812 and abuts against the X-axis adjusting limiting block 8101 after passing through the guide fixing block 812.

[0079] The X-axis adjusting follower block 810 has a cavity in the bottom, and the X-axis adjusting limiting block 8101 is located in the cavity and can move relative to the cavity. One end of the X-axis adjusting limiting block 8101 extends out of the cavity and abuts against the side surface of the first supporting block 804.

[0080] Before the X-axis adjusting wheel 814 and the X-axis adjusting block 811 fine-tune the X-axis direction of the first supporting block 804, the bolt abutting against the X-axis adjusting limiting block 8101 on the guide fixing block 812 is loosened, so that the X-axis adjusting limiting block 8101 retreats into the cavity in the bottom of the X-axis adjusting follower block 810, leaving a margin for the X-axis direction movement of the first supporting block 804. After fine-tuning is completed, the bolt is tightened to abut against the X-axis adjusting limiting block 8101, and the extended end of the X-axis adjusting limiting block 8101 again abuts against the side surface of the first supporting block 804 to prevent movement.

[0081] All structures at the bottom of the fixed seat 801 in the loading block 8 can be detached from the fixed seat 801. After the coaxiality in the X-Y directions is adjusted by the adjusting wheel, the detached structures are inserted back into the machine tool and locked. The corresponding supporting blocks at the bottom of the loading block 8 have self-locking function in the X-Y directions (i.e. after being adjusted by the adjusting wheel, they are locked and fixed by bolts), and will not be displaced when subjected to a large impact force such as punching or a large impact force such as a drill bit in the drilling station. The positioning in the X-Y coaxiality direction is stable and reliable, and is more suitable for large-scale stable machining of aviation material screws with high precision requirements.

[0082] Referring to Figure 20 The first supporting block 804 is provided with an identification sheet 815 at the bottom, which is marked with the directions of Y-axis and X-axis, and the corresponding positions on the identification sheet 815 have let holes for the Y-axis adjusting wheel 813 and the X-axis adjusting wheel 814 to expose.

[0083] The second supporting block 805 and the third supporting block 806 are protruded from the side away from the first supporting block 804, and a part of the second supporting block 805 and the third supporting block 806 are embedded into the sliding groove on the inner wall of the groove on the bottom of the guide rail fixing sheet 809, so that the second supporting block 805 and the third supporting block 806 can slide along the sliding groove when the distance between the second supporting block 805 and the third supporting block 806 is adjusted.

[0084] The waist-shaped holes extending along the direction of X-axis are arranged on the side and the upper surface of the guide rail fixing sheet 809, and the bolt is arranged in each waist-shaped hole, so that the bolt is threadedly connected with the side and the upper surface of the first supporting block 804 and the second supporting block 805 after the distance between the second supporting block 805 and the third supporting block 806 is adjusted, thereby fixing the first supporting block 804 and the second supporting block 805 with the guide rail fixing sheet 809.

[0085] The first supporting block 804 and the tool fixing block 802 have a proper gap, so as to place the pressing block 807 and the cap head pressing sheet 808. The pressing block 807 and the cap head pressing sheet 808 are located above the first supporting block 804 and are separated from the first supporting block 804 by a certain distance. The pressing block 807 is suspended below the tool fixing block 802 by the bolt, the lower end of the bolt is threadedly connected with the pressing block 807 through the tool fixing block 802, and the height of the pressing block 807 can be adjusted by rotating the bolt, so as to adapt to different specifications of the high lock bolt.

[0086] Referring to Figure 19 The cap head pressing sheet 808 is provided with two cap head pressing sheets corresponding to the first groove 80411 and the third groove 80413 of the first material guide groove 8041, and is located above the edge of the first groove 80411 and the second groove 80412, and forms a guide space between the first supporting block 804 for the head of the blank to slide. The cap head pressing sheet 808 can press the head of the blank downward, so as to prevent the blank from separating from the material guide groove during sliding.

[0087] The pressing block 807 is located above the second groove 80412 of the first material guide groove 8041, especially above the arc surface at the intersection of the second groove 80412 and the third groove 80413. After the push rod 17 pushes the blank against the arc surface, the pressing block 807 can position the axial progress of the blank when drilling the tail end of the rod of the blank, so as to prevent the processing head from pushing the blank out of the guide groove.

[0088] Two cap head pressing plates 808 are fixed on both sides of the pressing block 807 by bolts, and have waist-shaped holes extending upward and downward to adjust the position of the cap head pressing plates 808.

[0089] Correspondingly, the bottom of the tool fixing block 802 has a receiving groove for receiving the cap head pressing plate 808.

[0090] As shown in Figure 22 , Figure 24 The third supporting block 806 has a receiving groove on the side opposite to the first groove 80411, which is semi-open and has a gap communicating with the first groove 80411 and the second groove 80412. A blocking piece 8061 is arranged in the receiving groove and is rotatably connected to a cover plate fixedly installed on the third supporting block 806 by screws to seal the area of the receiving groove except the gap.

[0091] The shape of the receiving groove is matched with that of the blocking piece 8061, but the size of the receiving groove is slightly larger than that of the blocking piece 8061 to provide enough space for the rotation of the blocking piece 8061. A spring is arranged in the receiving groove and has one end connected to the first supporting block 804 and the other end connected to the blocking piece 8061.

[0092] The blocking piece 8061 has a protruding part on one side, and the spring applies a pre-tightening force to the blocking piece 8061 so that the protruding part of the blocking piece 8061 protrudes from the gap and protrudes into the second groove 80412.

[0093] As shown in Figure 25 , Figure 26 When the blank slides downward along the first groove 80411, the end of the blank reaching the end of the first groove 80411 is blocked by the protruding part of the blocking piece 8061, thereby pre-positioning the blank, which prevents multiple blanks from falling into the second groove 80412 at the same time and only one blank is pushed into the second groove 80412 at a time. Then the push rod 17 passes through the penetrating groove and pushes the blank, the protruding part of the blocking piece 8061 is pressed, the blocking piece 8061 is deflected, the spring is energized, the protruding part is retracted into the receiving groove, and the blank slides from the front end of the second groove 80412 to the position of the rear arc surface of the second groove 80412 under the pushing of the push rod 17 and is clamped between the arc surface and the pressing surface 171 of the front end of the push rod 17.

[0094] When the push rod 17 is retracted to the original position and withdrawn from the second groove 80412, the spring releases energy, and the protruding part of the blocking piece 8061 protrudes from the gap again under the action of the spring.

[0095] As shown in Figure 23As shown, the blowing direction of the blowing hole 80401 is towards the extension direction of the third groove 80413 on the arc surface inside the first supporting block 804 which penetrates to the joint of the second groove 80412 and the third groove 80413. Since oil needs to be sprayed on the blank during processing, the blank may be stuck on the arc surface. By blowing the blank through the blowing hole 80401, the blank can be blown into the third groove 80413, and the oil can be blown away at the same time.

[0096] The conventional machine tool adopts a plurality of large cams sleeved on a shaft to realize synchronous blank clamping of each station through the cams. The clamping speed and clamping force cannot be adjusted. For stations such as drilling a center hole and punching a square hole, the hole depth and stress are very uncoordinated. Only the average speed and force can be taken, which leads to unstable problems of punching a square hole station processing high-temperature alloy or large-diameter aviation screws.

[0097] As shown in Figure 3 , Figure 17 As shown, the present application is provided with a connecting rod driving mechanism 16 above each feeding block 8, which is used to drive the push rod 17 to slide relative to the guide rail fixed piece 809, control the push rod 17 to pass through the insertion slot, and top the blank tightly on the arc surface. Each connecting rod driving mechanism 16 is independently controlled.

[0098] The connecting rod driving mechanism 16 mainly includes a protection frame 161, a driving cylinder 162, a connecting rod 165, an extension rod 163 and the like. The protection frame 161 is usually fixedly installed on the machine tool, and the driving cylinder 162 is horizontally fixedly installed on the top of the protection. The output end of the driving cylinder 162 is fixedly connected with the extension rod 163, the other end of the extension rod 163 is fixedly connected with the connecting sleeve 164, and the other end of the connecting sleeve 164 is hingedly connected with the connecting rod 165. The protection frame 161 has a rectangular hole through which the connecting rod 165 passes up and down, and the lower end of the connecting rod 165 extends below the protection frame 161.

[0099] The middle part of the connecting rod 165 is rotationally connected with the protection frame 161 through a rotating shaft, and the rectangular hole can limit the rotation angle of the connecting rod 165.

[0100] In this embodiment, the lower end of the connecting rod 165 is connected to a pin fixing block 166, and the upper end of the pin fixing block 166 is fixedly connected to the lower end of the connecting rod 165 by bolts. A pin 167 is provided at the lower end of the pin fixing block 166. Correspondingly, an arc-shaped groove 172 is provided on the upper surface of the tail end of the push rod 17. The arc-shaped groove 172 is "U"-shaped, and the pin 167 is partially embedded in the arc-shaped groove 172. When the drive cylinder 162 drives the connecting rod 165 to rotate relative to the protective frame 161, it will drive the pin 167 to move in an arc-shaped trajectory. The pin 167 embedded in the arc-shaped groove 172 will push the push rod 17 to slide relative to the guide rail fixing piece 809. When the connecting rod 165 rotates clockwise, it pushes the push rod 17 into the second groove 80412. When the connecting rod 165 rotates counterclockwise, it pulls the push rod 17 out of the second groove 80412.

[0101] In other embodiments, a waist-shaped hole can be formed at the lower end of the connecting rod 165, extending along the length of the connecting rod 165. The upper end of the pin fixing block 166 is rotatably connected to the waist-shaped hole via a pin 167, and the lower end of the pin fixing block 166 is hinged to the rear end of the push rod 17 via a pin 167. When the connecting rod 165 rotates, the pin fixing block 166 pushes or pulls the push rod 17 to slide.

[0102] Each workstation utilizes an independent small pneumatic cylinder in conjunction with a lever-type speed-increasing and force-enhancing mechanism to achieve independent and rapid force-increasing clamping of the workpiece. The purpose of the small pneumatic cylinder is to achieve rapid movement of the cylinder piston rod with only a small flow of compressed air. The added lever not only amplifies the force but also makes the clamping action faster. Each workstation can independently adjust the clamping parameters and clamping force, making it particularly suitable for multi-station applications with varying requirements for clamping force and speed. It is especially suitable for multi-station machining applications involving aerospace material parts, where the processing forces and depths vary significantly.

[0103] See Figure 3 , Figure 4 The four mechanisms are arranged sequentially according to the processing order. The four feeding blocks 8 are close to each other and inclined in the direction of the processing order. Therefore, the first guide grooves 8041 on the four feeding blocks 8 are connected end to end in sequence, thus forming a through material channel. The blank can slide along this material channel to the corresponding process position.

[0104] As mentioned in the high lock bolt tail end full process machining machine with publication number CN114750001A, point oil type lubrication is adopted in the drilling and punching process to realize oil lubrication. As we all know, the material of aviation high lock bolt is mostly high-strength TC4 titanium alloy, and a small part is high-strength high-temperature alloy of A286 or Inconel718 material. The general machining cooling and lubrication method for this material workpiece at home and abroad is to spray cooling oil or cooling liquid to realize the cooling and lubrication of the drilling and punching process of this material. The patent application adopts point oil type cooling and lubrication, and the root cause is the serious defects of the design structure, that is, all the motors, cables, shaft couplings, spindle bearings, linear rails, translation mechanism sliding rails and the like are directly exposed to the place where oil can be directly splashed, so that the sealing and protection of oil splashing cannot be realized, and only the way of dripping oil can avoid corrosion and damage of the above-mentioned components. Machine tool moving and positioning parts are often frequently blocked by iron powder and fine iron filings which should be washed away by cooling liquid (point oil cooling) in time.

[0105] Secondly, all the drilling and punching servo drives adopt the stepped linear rail structure (producing significant overturning moment) in the application file Figure 16 instead of the coaxial cylindrical guide rail structure (no overturning moment), so the servo drive in this patent application has poor rigidity and large deformation under stress, which is not suitable for the machining of aviation fasteners with high coaxial accuracy requirements.

[0106] The reaming mechanism 4, drilling mechanism 5, punching hole mechanism 6 and chip removal mechanism 7 of the present application are different from the above.

[0107] Referring to Figure 11 , the reaming mechanism 4, drilling mechanism 5 and chip removal mechanism 7 have similar structures, but the functions and machining tools on the mechanisms are different. Protective covers 18 are arranged on the outside of the reaming mechanism 4, drilling mechanism 5, punching hole mechanism 6 and chip removal mechanism 7 for protecting the internal motors.

[0108] As shown in Figure 12 , Figure 13 , the reaming mechanism 4 mainly consists of a first feeding control assembly 403, a rotation control assembly 402 and a reamer 401. The first feeding control assembly 403 includes a first housing 4031, a second housing 4032, a guide sleeve 4033, an anti-rotation block 4035, a first servo motor 4034 and the like. The second housing 4032 is fixedly installed on the first housing 4031 and is in communication with the first housing 4031 through a guide hole extending along the length direction of the first housing 4031 and the second housing 4032, and the anti-rotation block 4035 can slide along the guide hole. The first housing 4031 is generally fixedly installed on a backing plate and is installed on the machine tool through the backing plate.

[0109] The guiding hole on the first shell 4031 has two guiding keys 4038 on both sides, and the anti-rotation block 4035 is located between the two guiding keys 4038 and in sliding contact with the guiding keys 4038. The guiding keys 4038 guide the sliding of the anti-rotation block 4035 and limit the rotation of the anti-rotation block 4035.

[0110] The first shell 4031 has a front-to-back through hole, and the guiding sleeve 4033 is arranged in the through hole. The two ends of the guiding sleeve 4033 extend out of the through hole by a certain length, so as to leave a margin for the extension and retraction of the guiding sleeve 4033 relative to the through hole.

[0111] A guiding sleeve 4033 is arranged in the through hole of the first shell 4031. The guiding sleeve 4033 has a front end and a rear end. The front end of the guiding sleeve 4033 is provided with a guiding hole, and the rear end of the guiding sleeve 4033 is provided with a guiding hole. The anti-rotation block 4035 is fixedly installed on the outer side of the guiding sleeve 4033. The lower end of the anti-rotation block 4035 is embedded into the groove on the outer wall of the guiding sleeve 4033 and is fixed by a bolt. The upper end of the anti-rotation block 4035 extends into the second shell 4032 through the guiding hole.

[0112] A threaded groove is formed on the contact surface between each guiding sleeve 4033 and the guiding sleeve 4033. The threaded groove is filled with lubricating liquid, which facilitates the infiltration of the lubricating liquid to the surface of the guiding sleeve 4033, so as to facilitate the axial sliding of the guiding sleeve 4033 relative to the guiding sleeve 4033.

[0113] A feeding end cover 4037 is arranged at the front end and the rear end of the first shell 4031. The feeding end cover 4037 is fixedly connected to the first shell 4031 by a bolt, and is used to seal and fix the guiding sleeve 4040 in the through hole of the first shell 4031.

[0114] The first servo motor 4034 is fixedly installed on the outer end of the second shell 4032. The output shaft of the first servo motor 4034 is connected to the lead screw 4039 through a shaft coupling. The lead screw is located in the second shell 4032. The end of the lead screw connected to the output shaft of the motor is rotatably connected to the second shell 4032 through a bearing. The other end is threadedly connected to the lead screw nut fixed on the upper end of the anti-rotation block 4035.

[0115] The first servo motor 4034 drives the lead screw 4039 to rotate. Since the anti-rotation block 4035 is limited by the guiding hole, it will not rotate. Therefore, the guiding sleeve 4033 connected to the anti-rotation block 4035 will not rotate. Therefore, the lead screw 4039 will drive the anti-rotation block 4035 to slide along the guiding hole, thereby driving the guiding sleeve 4033 to axially extend and retract relative to the through hole on the first shell 4031, and then controlling the feeding movement of the counter sink head 401.

[0116] The rotation control assembly 402 is mounted on the guide sleeve 4033. The rotation control assembly 402 mainly comprises a slewing shaft 4022 and a second servo motor 4021. The second servo motor 4021 is fixedly mounted at the rear end of the guide sleeve 4033, and the slewing shaft 4022 is located in the guide sleeve 4033. The front and rear ends of the slewing shaft 4022 are rotatably connected with the two ends of the guide sleeve 4033 through ball bearings. The output shaft of the second servo motor 4021 is connected with the rear end of the slewing shaft 4022 through a shaft coupling, and the slewing shaft 4022 is driven to rotate relative to the guide sleeve 4033 by the second servo motor 4021.

[0117] Three ball bearings, a spacer sleeve, a locking sleeve and an adjusting nut are arranged at a position close to the front end of the slewing shaft 4022. The adjusting nut is threadedly connected at the front end of the slewing shaft 4022 and flush with the front end face of the guide sleeve 4033. A sealing ring is arranged in the inner ring of the adjusting nut. The spacer sleeve is sleeved on the slewing shaft 4022. Two ball bearings are located between the adjusting nut and the spacer sleeve, and the other ball bearing is located on the other side of the spacer sleeve. The locking sleeve is fixedly mounted on the slewing shaft 4022 and tightly abuts against the ball bearings, so that the three ball bearings, the spacer sleeve and the adjusting nut tightly abut against each other.

[0118] A locking sleeve, a bearing seat end cover and two ball bearings are arranged at a position close to the rear end of the slewing shaft 4022. The two ball bearings are located close to each other. The locking sleeve is fixedly mounted at the rear end of the slewing shaft 4022 and located between the ball bearings and the shaft coupling. The bearing seat end cover is sleeved on the slewing shaft 4022 and fixedly connected with the guide sleeve 4033 through bolts. The bearing seat end cover is located at the periphery of the locking sleeve, and the locking cover and the ball bearings are sealed in the guide sleeve 4033.

[0119] A slewing end cover 4036 is arranged at the front end of the guide sleeve 4033. The slewing end cover 4036 can be threadedly connected with the guide sleeve 4033, or fixedly connected with the guide sleeve 4033 or the adjusting nut through bolts. The slewing end cover 4036 seals the front end of the guide sleeve 4033 and plays a dustproof role.

[0120] The front end of the slewing shaft 4022 penetrates through the slewing end cover 4036 and extends a certain length. A tool shank seat 404 is arranged at the front end of the slewing shaft 4022, and the tapper 401 is mounted at the front end of the tool shank seat 404. The rear end of the tool shank seat 404 is inserted into a slot at the front end of the slewing shaft 4022 and matched with the taper surface of the slot.

[0121] The rear end of the tool holder seat 404 is provided with a connecting piece, one end of the connecting piece is inserted into the slot at the front end of the rotary shaft 4022, and the other end of the connecting piece is inserted into the tool holder seat 404 and is in conical surface cooperation with the tool holder seat 404.

[0122] Referring to Figure 16 , the tool holder seat 404 is provided with an internal hexagonal bolt 4041 near the rear end, the internal hexagonal bolt 4041 passes through the rotary shaft 4022 and the tool holder seat 404 and is in threaded connection with the connecting piece, and the internal hexagonal bolt 4041 is tightened by a wrench, so that the conical surface on the connecting piece is pressed against the tool holder seat 404, so that the tool holder seat 404 has a tendency to move in the axial direction to the rear end of the rotary shaft 4022, thereby fixing the tool holder seat 404 on the rotary shaft 4022 and not being separated from the rotary shaft 4022.

[0123] When the second servo motor 4021 drives the rotary shaft 4022 to rotate, the second servo motor 4021 drives the rotary shaft 4022 to rotate, and when the first servo motor 4034 controls the feed motion of the guide sleeve 4033, the second servo motor 4021, the rotary shaft 4022 and the structure inside the rotary shaft 4022 are fed together. That is, the first feed control assembly 403 and the rotation control assembly 402 do not interfere with each other when working, and the axial movement accuracy can be ensured.

[0124] Continuing to refer to Figure 11 , the drilling mechanism 5 mainly includes a first feed control assembly 403, a rotation control assembly 402 and a drill bit 501. Except that the structure and function of the machining head (i.e. the drill bit 501) are different, the other structures and installation methods are the same as those of the hole tapping mechanism 4, which will not be described in detail here.

[0125] Similarly, the chip removal mechanism 7 is the same as the hole tapping mechanism 4 and the drilling mechanism 5, and the front end of the chip removal mechanism 7 is a milling head 701. When the square hole mechanism 6 is punching the tail end of the high lock bolt, the waste will be punched into the bottom of the hole, and the waste will be left in the bottom of the hole. At this time, the milling head 701 will extend into the hole to stir and clean the waste left inside.

[0126] As Figure 14 , Figure 15As shown, the hole punching mechanism 6 mainly comprises a punch 601 and a second feed control assembly 602 for controlling the feed movement of the punch 601. The second feed control assembly 602 is similar in structure to the first feed control assembly 403. The second feed control assembly 602 mainly comprises a third housing 6021, a guide core shaft 4022 sleeve, a lead screw 4039, a lead screw nut, a speed reducer 6022, a third servo motor 6023 and the like. The third housing 6021 is generally fixed to the backing plate and mounted on the machine tool through the backing plate. The rear end of the guide core shaft 4022 sleeve is inserted into the third housing 6021 from the front end of the third housing 6021 and connected with the through hole of the third housing 6021. A guide bushing 4040 is arranged in the through hole, and the guide core shaft 4022 sleeve is connected with the guide bushing 4040.

[0127] Grooves extending in the form of threads, i.e. thread grooves, are formed on the contact surfaces of the guide bushing 4040 and the guide core shaft 4022 sleeve. The thread grooves are used for pouring lubricating liquid, so that the immersion liquid can be immersed on the surface of the guide core shaft 4022 sleeve, so as to facilitate the axial sliding of the guide core shaft 4022 sleeve relative to the guide bushing 4040.

[0128] A feed end cover 4037 is arranged at the front end of the third housing 6021. The feed end cover 4037 is fixedly connected with the third housing 6021 by bolts, and is used for sealing and fixing the guide bushing 4040 in the through hole of the third housing 6021.

[0129] The lead screw nut is fixedly installed at the rear end of the guide core shaft 4022 sleeve, and one end of the lead screw 4039 can extend into the guide core shaft 4022 sleeve through the lead screw nut. The guide core shaft 4022 sleeve is hollow. The lead screw 4039 is threadedly connected with the lead screw nut. The output shaft of the third servo motor 6023 is connected with the input end of the speed reducer 6022. The speed reducer 6022 is fixedly installed at the rear end of the third housing 6021. The output end of the speed reducer 6022 is connected with the end of the lead screw 4039 away from the lead screw nut through a shaft coupling. The lead screw 4039 is rotatably connected with the third housing 6021 through a bearing. A bearing seat end cover is also arranged at the rear end of the third housing 6021. The bearing seat end cover is located in the third housing 6021 and fixedly connected with the third housing 6021 by bolts. The bearing seat end cover seals and fixes the bearing in the third housing 6021.

[0130] The third housing 6021 also has a guide hole. A rotation prevention block 4035 is arranged on the outer side of the guide core shaft 4022 sleeve near the rear end. The lower end of the rotation prevention block 4035 is embedded into a groove on the outer wall of the guide core shaft 4022 sleeve and is fixed thereto by a bolt. The upper end of the rotation prevention block 4035 extends into the guide hole. Two guide keys 4038 are arranged on both sides of the guide hole. The rotation prevention block 4035 is located between the two guide keys 4038 and is in sliding contact with the guide keys 4038. The guide keys 4038 guide the sliding of the rotation prevention block 4035 and limit the rotation of the rotation prevention block 4035.

[0131] A roller 40351 is arranged on the rotation prevention block 4035. The roller 40351 is in rolling contact with the guide keys 4038, thereby reducing the friction when the rotation prevention block 4035 slides.

[0132] A connecting sleeve 6025 is arranged at the front end of the guide core shaft 4022 sleeve. A tool holder 404 is arranged at the front end of the connecting sleeve 6025. The punch 601 is installed at the front end of the tool holder 404. The specific installation mode of the tool holder 404 is the same as that of the above-mentioned tapper mechanism 4, and will not be described in detail here.

[0133] When the third servo motor 6023 operates, power is transmitted to the lead screw 4039 through the speed reducer 6022 to drive the lead screw 4039 to rotate. Since the rotation prevention block 4035 is limited by the guide hole, it will not rotate, and thus the guide sleeve 4033 connected to the rotation prevention block 4035 will also not rotate. When the lead screw 4039 rotates, the rotational force is converted into an axial force by the cooperation of the lead screw nut, so the lead screw 4039 drives the rotation prevention block 4035 to slide along the guide hole, thereby driving the guide core shaft 4022 sleeve to axially extend and retract relative to the through hole on the third housing 6021, and then controlling the feed motion of the punch 601.

[0134] That is, the punch 601 of the punch and hole mechanism 6 can only move forward and backward, and will not rotate.

[0135] During processing, first, the tapper mechanism 4 controls the rotation and feed motion of the tapper 401 to tapper a central hole at the tail end of the high-lock bolt, so as to facilitate subsequent finishing. The central hole is coaxial with the central axis of the high-lock bolt. Then, the drilling mechanism 5 controls the rotation and feed motion of the drill 501 to process the central hole into a round hole. Then, the punch and hole mechanism 6 controls the feed motion of the punch 601 to punch an inner hexagonal hole in the round hole. Finally, the chip removal mechanism 7 controls the rotation and feed motion of the milling head 701 to stir and clean the waste chips punched into the inner hexagonal hole, thereby completing the chip removal.

[0136] Existing machine tools use a motor and reducer to drive a cam. The spindle that rotates at the top of the cam achieves drilling and punching at a fixed distance and feed speed. The entire cam mechanism is then supported by a variable frequency motor and a trapezoidal screw below to adjust the drilling and punching depth. However, this method has too many transmission chains, poor rigidity, large depth machining errors, and the feed speed cannot be adjusted. It is not well-suited for machining aerospace materials such as titanium alloys and high-temperature alloys, which require different feed speeds.

[0137] As can be seen from the above description, the combination of servo motor ball screw feed drive and servo motor rotary shaft realizes digital processing of drilling and punching depth displacement and feed speed during drilling and punching, which is especially suitable for processing aerospace materials such as titanium alloys and high-temperature alloys that correspond to different feed speeds.

[0138] During loading, when the blank slides above the countersinking mechanism 4, the corresponding push rod 17 pushes the blank into the tail end of the second groove 80412 of the first guide groove 8041 and clamps it, so that the blank is directly above the countersink 401 and coaxial with the countersink 401. The countersink 401, drill 501, punch 601 and milling head 701 are perpendicular to the corresponding first guide groove 8041. The fine adjustment of the first support block 804, the second support block 805 and the third support block 806 is also to adapt to high-strength bolts of different specifications and to make the high-strength bolt blanks of different specifications coaxial with the processing heads including the countersink 401, drill 501, punch 601 and milling head 701, to prevent eccentricity between the blank to be processed and the processing head. If eccentricity occurs, the position of the first support block 804, the second support block 805 and the third support block 806 can be finely adjusted. Especially the position of the first support block 804.

[0139] The finished high-strength bolts flow out from the feeding block 8 above the chip removal mechanism 7. The material distribution mechanism 9 is located at the discharge port.

[0140] like Figure 28 As shown, the material distribution mechanism 9 mainly consists of a feeding hopper 901, a distribution plate 903, and a distribution cylinder 902. The feeding hopper 901 has a receiving port at its top, through which the finished high-strength bolts fall into the feeding hopper 901. The space inside the feeding hopper 901 is divided into two parts. The distribution plate 903 is located above the two spaces. The distribution cylinder 902 is installed on the outside of the feeding hopper 901, and its output end is connected to the distribution plate 903 inside the feeding hopper 901, driving the distribution plate 903 to rotate. During rotation, the distribution plate 903 obscures the two spaces respectively.

[0141] The bottom of the distribution hopper has two discharge openings respectively connected with two spaces, and each discharge opening is connected with a discharge pipe 904. The qualified and unqualified high-lock bolts are distributed by the distribution plate 903 and discharged from the two discharge pipes 904 respectively.

[0142] A hopper 13 is arranged below each discharge pipe 904. Referring to Figure 2 , the hopper 13 is arranged in a rack 12 fixed on the machine body 1. The bottom of the hopper 13 has a plurality of small holes, so that the residual oil on the high-lock bolts falling into the hopper 13 flows into the rack 12.

[0143] The bottom of the rack 12 has an outlet, and the bottom of the outlet is connected with a pipe extending above an oil discharging groove 14 in the machine body 1. The final residual oil is collected in the oil discharging groove 14.

[0144] During the hole processing of the blank, the sensors arranged on the reaming mechanism 4, the drilling mechanism 5, the square hole punching mechanism 6 and the chip removing mechanism 7 detect the torque of the high-lock bolt. Once the torque is overloaded or changes, the system automatically judges whether the high-lock bolt is qualified, and then the distribution mechanism 9 is used to screen the qualified and unqualified products.

[0145] As shown in Figure 1 , the above-mentioned oil discharging groove 14 is located at the bottom of the processing space in the machine body 1 and below the reaming mechanism 4, the drilling mechanism 5, the square hole punching mechanism 6 and the chip removing mechanism 7. The oil and the generated chips during the processing fall into the oil discharging groove 14 and are collected.

[0146] The chip collecting mechanism 10 is located at the bottom of the machine body 1, and the middle of the oil discharging groove 14 is vertically through and connected with a collecting groove in the chip collecting mechanism 10. Finally, the oil and the chips flow into the collecting groove and are collected and treated by the chip collecting mechanism 10.

[0147] An oil mist purifier 11 is arranged at the top of the machine body 1. The oil mist purifier 11 is an electrostatic oil mist purifier 11, which is connected with the processing space in the machine body 1. The air containing oil mist in the processing space is sucked into the purifier by a fan, enters an ionization area, and the air molecules are ionized by an electric field to generate a large number of positive ions and electrons. When the oil mist particles pass through the ions, they are charged and become positively charged. The oil mist particles with electric charge enter a dust collecting area with the airflow, and according to the principle of "opposites attract", the positively charged oil mist particles are strongly adsorbed to the negatively charged dust collecting plate. The oil mist particles adsorbed on the dust collecting plate gradually gather and condense into oil droplets. When the oil droplets reach a certain size, they automatically drip to the bottom of the oil collecting groove under the action of gravity, so as to realize the recovery of oil and the purification of air. The purified clean air is finally discharged.

[0148] Referring to Figure 3 As shown in the figure, four square holes are opened on the installation plate 15, which correspond to the counter sinking mechanism 4, the drilling mechanism 5, the square hole punching mechanism 6 and the chip removing mechanism 7 respectively. The square holes are used to install a broken tool detector (not shown in the figure), which is used to automatically, quickly and accurately detect whether the tool (such as a milling cutter, a drill bit 501, etc.) is broken, excessively worn or missing during numerical control machining, so as to avoid the rejection of workpieces and the damage of equipment, and greatly improve the degree of production automation and product quality.

[0149] The above technical solution only embodies the preferred technical solution of the present application, and some changes made by the person skilled in the art to some parts thereof also embody the principle of the present application and are within the protection scope of the present application.

Claims

1. A fully automatic composite machining tool for high-strength bolts, characterized in that, include: Vibration feeding mechanism (2) is used to feed the blanks of high-strength bolts; The countersinking mechanism (4) is used to perform countersinking positioning hole processing on the tail end of the blank; Drilling mechanism (5) is used to perform drilling based on the positioning hole countersunk at the tail end of the blank; The punching mechanism (6) is used to punch hexagonal holes or plum blossom holes on the basis of the bottom hole drilled at the tail end of the blank; The chip removal mechanism (7) is used to clean the iron chips at the bottom of the hole punched out at the tail end of the blank; Multiple feeding blocks (8) are respectively set above the countersinking mechanism (4), the drilling mechanism (5), the square hole punching mechanism (6) and the chip removal mechanism (7), and each feeding block (8) has a first guide groove (8041) for guiding the conveying of the blank; The conveyor belt (3) has its first and last ends connected to the discharge port of the vibrating feeding mechanism (2) and the inlet of the first guide groove (8041) on the feeding block (8) above the countersinking mechanism (4), respectively, to convey the blank from the vibrating feeding mechanism (2) to the first guide groove (8041) on the feeding block (8); The feeding block (8) includes a support block for lifting the head of the blank and a pressure block (807) for axially positioning the head of the blank. A first guide groove (8041) for accommodating the rod portion of the blank is formed on the support block. The first guide grooves (8041) on multiple feeding blocks (8) are connected end-to-end to form a material channel, which slopes downwards from the inlet to the outlet. The pressure block (807) is located above the support block, allowing the rod portion of the blank to... The blank is embedded in the material channel and can slide along the material channel. The head of the blank can be embedded in the gap between the support block and the pressure block (807) so that the blank will not detach from the material channel when it slides along the material channel. Each feeding block (8) is provided with a sliding push rod (17). The front end face of the push rod (17) protrudes to form a blocking part on the side close to the conveying direction. The front end of the push rod (17) can pass through the material channel to block the blank and clamp the blank.

2. The fully automatic composite machining tool for high-strength bolts according to claim 1, characterized in that, The conveyor belt (3) includes a first guide rail (301) and a second guide rail (302) that are horizontally arranged and opposite to each other and whose spacing is adjustable, two first synchronous pulleys (304) that are rotatably connected to the two ends of the first guide rail (301), and a transmission belt (303) that meshes with the two first synchronous pulleys (304) at both ends. A guide groove for accommodating the blank rod is formed between the first guide rail (301) and the second guide rail (302). The head of the blank can be supported on the first guide rail (301) and the second guide rail (302). The transmission belt (303) is wrapped around the first guide rail (301). When the transmission belt (303) rotates, it can drive the blank to slide backward along the guide groove.

3. The fully automatic composite machining tool for high-strength bolts according to claim 2, characterized in that, A second synchronous pulley (305) and a drive motor (308) are disposed below the first synchronous pulley (304). The output end of the drive motor (308) is connected to the second synchronous pulley (305), and the transmission belt (303) meshes with the second synchronous pulley (305).

4. The fully automatic composite machining tool for high-strength bolts according to claim 1, characterized in that, The first guide rail (301) and the second guide rail (302) are provided with a spacing adjustment mechanism (307) at both ends. The spacing adjustment mechanism (307) includes a guide rail fixing block (3072), an adjustment frame, an adjustment screw (3073), and a drive block (3076). The two ends of the first guide rail (301) and the second guide rail (302) are respectively fixed on the guide rail fixing block (3072). An adjustment frame is provided on each opposite side of the two ends of the first guide rail (301). The upper part is provided with a sliding groove, and the driving block (3076) is slidably disposed in the sliding groove. The two driving blocks (3076) are respectively fixedly connected to the guide rail fixing blocks (3072) at both ends of the first guide rail (301). The adjusting screw (3073) is rotatably connected to the adjusting frame and threadedly connected to the driving block (3076) to control the driving block (3076) to slide along the sliding groove, thereby driving the first guide rail (301) to move closer to or away from the second guide rail (302).

5. The fully automatic composite machining tool for high-strength bolts according to claim 2, characterized in that, The discharge port of the material guide trough is provided with two discharge plates (309). The two discharge plates (309) are respectively fixedly installed at an incline on one end of the first guide rail (301) and the second guide rail (302) near the discharge port. The material guide trough formed between the two discharge plates (309) is connected to the material channel on the feeding block (8).

6. The fully automatic composite machining tool for high-strength bolts according to claim 1, characterized in that, The countersinking mechanism (4) includes a countersink (401), a rotation control component (402) for controlling the rotation of the countersink (401), and a first feed control component (403) for controlling the feed motion of the countersink (401); The drilling mechanism (5) includes a drill bit (501), a rotation control component (402) for controlling the rotation of the drill bit (501), and a first feed control component (403) for controlling the feed motion of the drill bit (501). The punching mechanism (6) includes a punch (601) and a second feed control assembly (602) for controlling the feed motion of the punch (601); The chip removal mechanism (7) includes a milling head (701), a rotation control assembly (402) for controlling the rotation of the milling head (701), and a first feed control assembly (403) for controlling the feed motion of the milling head (701). The countersink (401), drill (501), punch (601) and milling head (701) are perpendicular to the conveying direction of the feed channel.

7. The fully automatic composite machining tool for high-strength bolts according to claim 1, characterized in that, A linkage drive mechanism (16) is provided above the feeding block (8). The linkage drive mechanism (16) includes a protective frame (161), a drive cylinder (162) fixedly installed on the protective frame (161), an extension rod (163) connected to the output end of the drive cylinder (162), and a connecting rod (165) with its upper end hinged to the extension rod (163). The middle part of the connecting rod (165) is rotatably connected to the protective frame (161), and the lower end of the connecting rod (165) is configured to slide the push rod (17).

8. The fully automatic composite machining tool for high-strength bolts according to claim 1, characterized in that, The composite machine tool also includes: The machine body (1) has a processing space inside it. The countersinking mechanism (4), drilling mechanism (5), square hole punching mechanism (6), chip removal mechanism (7) and multiple feeding blocks (8) are all located in the processing space. The vibrating feeding mechanism (2) is located outside the machine body (1). The conveyor belt (3) extends into the processing space. Waste collection mechanism (10), which is located at the bottom of the machine body (1) and is used to collect waste generated during the processing; The material distribution mechanism (9) has an inlet and an outlet of the material channel connected to screen the high-strength bolts that have been processed.

9. The fully automatic composite machining tool for high-strength bolts according to claim 8, characterized in that, The material distribution mechanism (9) includes a feeding hopper (901), a rotatable material distribution plate (903) disposed in the feeding hopper (901), and a material distribution cylinder (902) that drives the material distribution plate (903) to rotate. The bottom of the feeding hopper (901) has two discharge ports, and each discharge port is connected to a discharge pipe (904). The material distribution cylinder (902) can drive the material distribution plate (903) to flip back and forth between the two discharge ports so that the qualified and unqualified products in the high-strength bolts fall into the two discharge pipes (904) respectively.

10. The fully automatic composite machining tool for high-strength bolts according to claim 8, characterized in that, An installation plate (15) is provided on the inner wall of the processing space. The countersinking mechanism (4), drilling mechanism (5), punching square hole mechanism (6), chip removal mechanism (7) and multiple feeding blocks (8) are all installed at an incline on the installation plate (15). Protective covers (18) are provided on the outer sides of the countersinking mechanism (4), drilling mechanism (5), punching square hole mechanism (6) and chip removal mechanism (7).

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