Four-head drilling machine for metal workpiece

Abstract

The application discloses a four-head drilling machine for metal piece machining, and relates to the technical field of machining drilling machines.The four-head drilling machine comprises a machine tool, four groups of gun drills, a guide table and a clamping mechanism, the guide table is fixed on the machine tool, the clamping mechanism is installed on the guide table, the four groups of gun drills are arranged on the two sides of the guide table, a collecting groove is formed in the guide table and is used for collecting falling chippings, a plurality of rotating shafts are rotatably arranged in the collecting groove, the rotating shafts pass through the two side walls of the collecting groove at two ends, a chip removal wheel is arranged on the rotating shaft, a plurality of sieve holes are formed in the surface of the chip removal wheel, the adjacent chip removal wheels are rotationally connected, a suction groove is formed in the middle of the rotating shaft, one end of the suction groove is of an open structure, a plurality of inlets are formed in the lower surface of the rotating shaft at intervals, a suction device is arranged outside the open end of the rotating shaft, and the suction device is connected with a recovery box.The four-head drilling machine can efficiently screen and instantly recover chippings.

Description

Technical Field

[0001] This invention relates to the field of machining drilling technology, specifically a four-head drilling machine for machining metal parts. Background Technology

[0002] A four-head drilling machine is a common multi-axis drilling machine widely used in woodworking, metal processing, and other industries. It can process multiple holes simultaneously, improving production efficiency. It mainly consists of a bed, spindle head, worktable, feed mechanism, and other auxiliary structures. The spindle head is used to load the cutting tools, the worktable is used to fix the workpiece, the feed mechanism is used to drive the spindle head closer to the workpiece, and the auxiliary structures can be cooling structures or other auxiliary processing structures.

[0003] In the machining of large workpieces, multiple holes, such as bolt holes and center holes, are often required. Multi-spindle drilling machines can machine multiple holes simultaneously, significantly improving production efficiency. Furthermore, multi-spindle drilling machines ensure the machining and positional accuracy of multiple holes, reducing human error. For mass production, multi-spindle drilling machines can reduce the number of setups and machining time, further increasing production efficiency.

[0004] Existing four-head drilling machines install gun drills around the fixture according to actual drilling needs. However, for gun drills that need to be set up side by side, the small spacing will generate a large number of chips during the machining process. These chips are of different sizes and, if they cannot be discharged in time after falling onto the machine tool surface, they will affect the machining process. Summary of the Invention

[0005] The purpose of this invention is to provide a four-head drilling machine for machining metal parts, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a four-head drilling machine for metal parts processing, comprising a machine tool, four sets of gun drills, a guide table, and a clamping mechanism. The guide table is fixed on the machine tool, and the clamping mechanism is installed on the guide table for clamping the workpiece. The four sets of gun drills are arranged on both sides of the guide table to cooperate with the workpiece processing area. A collection groove is provided on the guide table for collecting fallen debris. Several rotating shafts are rotatably arranged in the collection groove, with both ends of the rotating shafts extending out of the side walls of the collection groove. A chip-cutting wheel is sleeved on the rotating shaft, and several sieve holes are opened on the circumference of the surface of the chip-cutting wheel. Adjacent chip-cutting wheels rotate and cooperate with each other. An air extraction groove is provided in the middle of the rotating shaft, and one end of the air extraction groove is an open structure. Several inlets are spaced apart on the lower surface of the rotating shaft. An extraction device is connected to the open end of the rotating shaft, and the extraction device is connected to a recovery box.

[0007] According to the technical scheme, one end of each rotating shaft is sleeved with a gear one, each rotating shaft end is respectively sleeved with a gear two, a support frame is connected to the guiding table corresponding to the collecting groove, a driver one is installed on one side of the support frame, a gear three is sleeved on the driving end of the driver one, a chain one is connected between the gear one and the gear three, and a chain two is connected between each gear two.

[0008] According to the technical scheme, a plurality of shaft sleeves are movably sleeved on the surface of the rotating shaft, the shaft sleeves are arranged corresponding to the inlets and located inside the chip removal wheel, the shaft sleeves are connected with grinding blocks, the grinding blocks are arranged in an arc structure and are attached to the inner wall of the chip removal wheel, a plurality of sieve holes two are formed on the two sides of the grinding block, a flow channel is formed in the grinding block, the flow channel is communicated with the sieve holes two and the inside of the shaft sleeve.

[0009] According to the technical scheme, the grinding block is also a counterweight block, there is a certain friction force between the shaft sleeve and the rotating shaft, the surface of the rotating shaft is provided with a friction force sensing module in cooperation with each shaft sleeve, which is used for detecting the rotating state of each shaft sleeve, and the area of the sieve hole two is smaller than the area of the sieve hole one. When the rotating shaft rotates, the shaft sleeve is driven to deflect, when reaching a certain height, the potential energy of the grinding block itself overcomes the friction force to fall downward, and the inner wall of the chip removal wheel is used to further grind the internal debris, thereby further reducing the volume of the debris. When the grinding block is at the lowest position, the flow channel is corresponding to the inlet, at this time, the debris of appropriate size can enter from the sieve hole two, pass through the flow channel, the inlet and enter the air suction groove, and when the grinding block rotates, the flow channel is misaligned with the inlet.

[0010] According to the technical scheme, the two sides of the chip removal wheel are movably connected with outer plates respectively, the outer plates are sleeved on the rotating shafts, the outer plates are connected with arc-shaped baffles, one side of the outer plate is fixedly provided with a connecting frame, and the connecting frame is connected with a driver two.

[0011] According to the technical scheme, the driver two is installed in the guiding table, the surface of the collecting groove is provided with a corresponding sliding groove in cooperation with the connecting frame, the arc-shaped baffle is arranged in close contact with the outer surface of the chip removal wheel, and the arc center angle of the arc-shaped baffle is less than 90 degrees.

[0012] According to the technical scheme, an arc-shaped groove is formed in the middle of the arc-shaped baffle, an arc-shaped rotating plate is movably arranged in the arc-shaped groove, driving tooth blocks are connected to the two sides of the arc-shaped rotating plate, a gear ring is rotatably arranged on the outer plate, the gear ring is provided with outer teeth and inner teeth respectively, the outer teeth are matched with the driving tooth blocks, a gear four is rotatably arranged on the outer plate, the inner teeth are matched with the gear four, and the gear four is connected with a driver three.

[0013] According to the technical scheme, the clamping mechanism comprises a support, a gas cylinder one is arranged on the support, a lifting plate is connected to the driving end of the gas cylinder one, a mounting plate is slidably connected to the lifting plate, a clamp is installed on one side of the mounting plate, and the shaft part of the clamp is connected with a driver four.

[0014] According to the above technical scheme, the support is provided with a longitudinal slide, the longitudinal slide is provided with a sliding plate in a matched mode, the sliding plate is provided with a second air cylinder, the driving end of the second air cylinder is connected with a mounting plate, a plurality of guide rods are fixed on the mounting plate, and the guide rods are in sliding cooperation with the sliding plate.

[0015] Compared with the prior art, the present application has the following advantages: the present application uses the cutting wheel with the screen hole one to preliminarily screen the debris in the moment of falling. The qualified debris is immediately sucked into the suction groove and recycled to the recycling box, realizing "production and cleaning simultaneously", and fundamentally avoiding the accumulation of qualified debris in the collecting groove, ensuring the smoothness of the collecting system. For the large-volume debris such as long strip and lump that cannot pass through the screen hole, the drive one drives all the cutting wheels to rotate in opposite directions, and the crushing effect between the cutting wheels and the "tearing" effect of the screen hole one can automatically break the debris into smaller particles. This process does not require manual intervention and is continuous, greatly enhancing the processing capacity of the system for complex debris, and breaking through the bottleneck of the traditional collecting groove being easily blocked by large debris.

[0016] By setting the grinding block, a "two-stage crushing" mechanism is formed. The impact and shear force of the periodic falling of the grinding block are used to grind the debris that has entered the cutting wheel but is still large in size. This not only further reduces the size of the debris, so that it can pass through the smaller screen hole two and be sucked away, realizing the "reduction" treatment of the debris, but also reduces the accommodation pressure and processing burden of the subsequent recycling box.

[0017] By setting the movable arc-shaped baffle and arc-shaped turning plate, an "intelligent cover plate" system is formed. The turning function can be realized: by moving, the debris layer on the surface of the cutting wheel can be turned over to prevent debris from "bridging" or accumulating, ensuring that all debris has the opportunity to be crushed and screened. The guiding function: actively guides the debris to the meshing area of the two cutting wheels to ensure the crushing effect. The sealing function: by unfolding the arc-shaped turning plate, a relatively closed negative pressure area can be formed locally, significantly enhancing the suction force in this area, thereby greatly improving the collection efficiency of small-volume debris. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, but do not constitute a limitation of the present application. In the drawings:

[0019] Figure 1 is a schematic view of the overall structure of the four-head drilling machine of the present application;

[0020] Figure 2 is a schematic view of the structure of the guide table of the present application;

[0021] Figure 3 is a schematic view of the internal structure of the collecting groove of the present application;

[0022] Figure 4 is the structural diagram of the cutting wheel of the present application;

[0023] Figure 5 is the collection diagram of the cutting bits of the present application;

[0024] Figure 6 is the sectional view of the cutting wheel of the present application;

[0025] Figure 7 is the schematic diagram of the outer plate and connecting structure of the present application;

[0026] Figure 8 is the enlarged schematic diagram of the A area of the present application; Figure 7

[0027] Figure 9 is the structural diagram of the clamping mechanism of the present application;

[0028] Figure 10 is the partial schematic diagram of the clamping mechanism of the present application.

[0029] In the figure: 1, machine tool; 2, gun drill; 3, guide table; 31, collection groove; 32, rotating shaft; 321, air extraction groove; 322, inlet; 323, extraction device; 324, recovery box; 325, gear one; 326, gear two; 33, cutting wheel; 331, screen hole one; 34, support frame; 341, driver one; 342, gear three; 35, shaft sleeve; 36, grinding block; 361, screen hole two; 362, flow-through channel; 37, outer plate; 371, connecting frame; 372, driver two; 38, arc-shaped baffle; 381, arc-shaped rotating plate; 382, driving tooth block; 373, gear ring; 3731, external teeth; 3732, internal teeth; 374, gear four; 375, driver three; 4, clamping mechanism; 41, support; 42, air cylinder one; 43, lifting plate; 44, mounting plate; 45, clamp; 46, driver four; 47, sliding plate; 48, air cylinder two; 49, guide rod; 5, workpiece; 6, conveying track. DETAILED DESCRIPTION

[0030] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all 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 work belong to the scope of protection of the present application.

[0031] Please refer to Figures 1-10 ​The present invention provides a technical solution: a four-head drilling machine for metal parts processing, comprising a machine tool 1, four sets of gun drills 2, a guide table 3, and a clamping mechanism 4. The guide table 3 is fixed on the machine tool 1, and the clamping mechanism 4 is installed on the guide table 3 for clamping workpieces 5. The four sets of gun drills 2 are arranged on both sides of the guide table 3 to cooperate with the processing area of ​​the workpieces 5. A collection groove 31 is provided on the guide table 3 for collecting fallen debris. Several rotating shafts 32 are rotatably arranged in the collection groove 31. The two ends protrude from the side walls of the collection tank 31. A chipping wheel 33 is fitted on the rotating shaft 32. Several screen holes 331 are opened on the circumference of the surface of the chipping wheel 33. Adjacent chipping wheels 33 rotate and cooperate with each other. An air extraction groove 321 is opened in the middle of the rotating shaft 32, and one end of the air extraction groove 321 is open. Several inlets 322 are spaced apart on the lower surface of the rotating shaft 32. An extraction device 323 is connected to the open end of the rotating shaft 32. The extraction device 323 is connected to a recycling box 324.

[0032] Furthermore, such as Figure 3 As shown, one end of one of the rotating shafts 32 is fitted with a gear 325, and the ends of each rotating shaft 32 are fitted with gears 326. The guide table 3 is connected to the collection groove 31 with a support frame 34. A driver 341 is installed on one side of the support frame 34. The driving end of the driver 341 is fitted with a gear 342. A chain 1 is connected between gear 325 and gear 342, and a chain 2 is connected between each gear 326.

[0033] The following is a supplementary explanation based on the above structure: When the debris falls into the collection tank 31, appropriately sized debris enters the cutting wheel 33 through the screen hole 331, while improperly sized debris accumulates on the surface of the cutting wheel 33. The extraction device 323 is activated to draw airflow into each extraction tank 321. The airflow carries the debris inside the cutting wheel 33 into the extraction tank 321 through the corresponding inlet 322, and is finally extracted by the extraction device 323 to the recycling box 324 for temporary storage. When driver 341 starts, it drives each cutting wheel 33 to rotate via chains 1 and 2. This causes large-volume chips accumulated on the surface of the cutting wheels 33 to move between the two cutting wheels 33. Through the crushing action between the two rolling cutting wheels 33 and the tearing effect of the screen holes 331 (e.g., when one end of a long chip gets stuck in the screen hole 331, the rotation between the two cutting wheels 33 can cut the long chip, thus reducing its overall volume), the large-volume chips are reduced in size and can then pass smoothly through the screen holes 331. The connection configuration between gears 325, 342, chains 1, 326, and 2 is not unique; the rotation direction of each cutting wheel 33 is controlled according to actual needs.

[0034] like Figure 5 , Figure 6As shown, the surface of the rotating shaft 32 is movably sleeved with a plurality of shaft sleeves 35, the shaft sleeves 35 are arranged corresponding to each inlet 322 and located inside the cutting wheel 33, the shaft sleeves 35 are connected with grinding blocks 36, the grinding blocks 36 are arranged in an arc structure and are in close contact with the inner wall of the cutting wheel 33, a plurality of second screen holes 361 are arranged on both sides of the grinding block 36, and a flow channel 362 is arranged inside the grinding block 36 and communicates with the second screen holes 361 and the inside of the shaft sleeve 35.

[0035] It should be noted that: the grinding block 36 is also a counterweight block, there is a certain friction between the shaft sleeve 35 and the rotating shaft 32, the surface of the rotating shaft 32 is provided with a friction force sensing module matched with each shaft sleeve 35, which is used for detecting the rotating state of each shaft sleeve 35, and the area of the second screen hole 361 is smaller than the area of the first screen hole 331. When the rotating shaft 32 rotates, the shaft sleeve 35 is driven to deflect, when reaching a certain height, the potential energy of the grinding block 36 itself overcomes the friction to fall downward, and the inner wall of the cutting wheel 33 is matched to further grind the internal debris, thereby further reducing the volume of the debris. When the grinding block 36 is at the lowest position, the flow channel 362 corresponds to the inlet 322, at this time, the debris of appropriate size can enter from the second screen hole 361, pass through the flow channel 362 and the inlet 322, and enter the suction groove 321, and when the grinding block 36 rotates, the flow channel 362 is misaligned with the inlet 322.

[0036] In one embodiment, as Figure 7 shown, the two sides of the cutting wheel 33 are movably connected with outer plates 37 respectively, the outer plates 37 are sleeved on the rotating shaft 32, the outer plates 37 are connected with an arc-shaped baffle 38, one side of the outer plate 37 is fixedly connected with a connecting frame 371, and the connecting frame 371 is connected with a second driver 372.

[0037] In actual operation, the second driver 372 is installed inside the guide table 3, a corresponding sliding groove is arranged on the surface of the collecting groove 31 matched with the connecting frame 371, the arc-shaped baffle 38 is arranged in close contact with the outer surface of the cutting wheel 33, and the arc center angle of the arc-shaped baffle 38 is less than 90 degrees. When the second driver 372 is started, the connecting frame 371 is driven to rotate as a whole, so that the outer plate 37 drives the arc-shaped baffle 38 to move on the upper surface of the cutting wheel 33, and the arc-shaped baffle 38 is used for turning over the debris accumulated on the surface of the cutting wheel 33; at the same time, the number of the first screen holes 331 communicated with the outside is reduced, which helps the suction device 323 to better suck the debris inside the cutting wheel 33; optionally, when the arc-shaped baffle 38 is actively controlled to rotate in the rotating direction of the cutting wheel 33, the arc-shaped baffle 38 can assist the debris to enter between the two cutting wheels 33, so as to avoid the situation that the debris is accumulated between the two cutting wheels 33 and cannot be crushed.

[0038] Further, as Figure 8As shown, the arc-shaped baffle 38 is provided with an arc-shaped slot in the middle, and an arc-shaped rotating plate 381 is movably arranged in the arc-shaped slot. The arc-shaped rotating plate 381 is connected with a driving tooth block 382 on both sides. The outer plate 37 is rotatably provided with a gear ring 373. The gear ring 373 is provided with an outer gear 3731 and an inner gear 3732. The outer gear 3731 is matched with the driving tooth block 382. The outer plate 37 is rotatably provided with a gear four 374. The inner gear 3732 is matched with the gear four 374. The gear four 374 is connected with a driver three 375.

[0039] In actual operation, when the driver three 375 is started, the gear four 374 rotates, the gear ring 373 rotates through the inner gear 3732, and the driving tooth block 382 rotates through the outer gear 3731, so that the arc-shaped rotating plate 381 rotates out of the arc-shaped slot, and forms a baffle structure with the arc-shaped baffle 38, so that the upper surface of the chip wheel 33 is relatively closed, thereby helping to better collect the appropriate size of the debris.

[0040] As shown in the figure, Figure 9 The clamping mechanism 4 includes a support 41. The support 41 is provided with a cylinder one 42. The driving end of the cylinder one 42 is connected with a lifting plate 43. The lifting plate 43 is slidably connected with a mounting plate 44. The mounting plate 44 is provided with a clamp 45 on one side. The shaft part of the clamp 45 is connected with a driver four 46.

[0041] As shown in the figure, Figure 10 The support 41 is provided with a longitudinal slide. The longitudinal slide is matched with a sliding plate 47. The sliding plate 47 is provided with a cylinder two 48. The driving end of the cylinder two 48 is connected with the mounting plate 44. The mounting plate 44 is fixed with a plurality of guide rods 49. The guide rods 49 are slidably matched with the sliding plate 47.

[0042] In actual operation, the cylinder one 42 is used to control the lifting plate 43 to drive the clamp 45 to move up and down as a whole, so as to adjust the height of the clamp 45. In this process, the sliding plate 47 moves on the longitudinal slide. The driver four 46 is used to control the rotation of the clamp 45 according to the needs. The cylinder two 48 is used to push and pull the mounting plate 44, so as to adjust the distance between the clamp 45 and the support 41.

[0043] Optionally, as shown in the figure, Figure 1 The machine tool 1 is provided with a conveying track 6 for carrying the workpiece 5.

[0044] The debris collecting and processing method is as follows:

[0045] First step: debris falling and preliminary screening. The debris generated by processing directly falls into the collecting groove 31 of the guide table 3. A plurality of chip wheels 33 arranged side by side in the collecting groove 31 constitute the first processing pass. The debris falls on the surface of the chip wheel 33. The debris with a volume smaller than the first sieve hole 331 of the chip wheel 33 directly passes through the first sieve hole 331 under the action of gravity and enters the inside of the chip wheel 33.

[0046] Second step: negative pressure suction and instant recycling. At the same time, the extraction device 323 connected to one end of the shaft 32 continues to work, and negative pressure (suction) is generated in the air extraction groove 321 in the middle of the shaft 32. Small volume chips entering the inside of the chip removal wheel 33 are quickly sucked into the air extraction groove 321 through the inlet 322 on the shaft 32 under the action of negative pressure. These chips are then uniformly transported to the recycling box 324 for temporary storage, completing the instant and clean recycling of qualified chips.

[0047] Third step: large chip crushing and forced breaking. For large volume chips such as long strips and lumps that are larger than the screen hole 331 and stay on the surface of the chip removal wheel 33, the forced breaking program is started. The driver 341 drives all shafts 32 and chip removal wheels 33 to rotate synchronously through the chain system, and the adjacent chip removal wheels 33 rotate in opposite directions. The surface chips are brought between the two opposite rotating chip removal wheels 33 and subjected to strong crushing and shearing action. At the same time, one end of part of the long strip chips will be stuck in the screen hole and torn and broken as the chip removal wheel 33 rotates. After this process, the large volume chips are broken into smaller particles.

[0048] Fourth step: internal secondary grinding and fine screening. After the third step of breaking, part of the chips become smaller and enter the inside of the chip removal wheel 33 through the screen hole 331. However, there may still be some "close to qualified" but slightly larger particles. At this time, the system starts the secondary fine processing: the shaft 32 drives the inner sleeve 35 and grinding block 36 to rotate, and when the grinding block 36 rotates to the top, it will fall due to its own gravity overcoming the friction force, impacting and grinding the chips on the inner wall of the chip removal wheel 33. The further ground and crushed chips enter the flow-through passage 362 inside the grinding block 36 through the smaller screen hole 361. When the grinding block 36 rotates to the bottom, the flow-through passage 362 is aligned with the inlet 322 on the shaft 32, and these ultra-fine chips are sucked away under the action of negative pressure, realizing deep reduction of the chips.

[0049] Further, the operation of the grinding block 36 based on the friction force sensing module is analyzed as follows:

[0050] The core function of the friction force sensing module is to monitor the relative motion state between the shaft 32 and the sleeve 35 in real time, so as to judge the working condition of the grinding block 36 and provide data basis for further control decision.

[0051] Case 1: Normal cycling state. State description: The system is in an ideal state of debris management. There is an adequate amount of debris inside the cutting wheel 33, providing effective grinding resistance without causing the grinding blocks 36 to jam. Friction data signature: The induction module detects periodic, regular friction force spikes. Process: The rotating shaft 32 lifts the sleeve 35 and the grinding blocks 36, causing the friction force to be constant and stable. When the grinding blocks 36 reach a certain height, their gravitational moment overcomes the maximum static friction, causing them to suddenly slide or roll down. At this moment, the friction force induction module detects an instantaneous drop or sharp fluctuation. System response: Determine that the system is running normally and no intervention is needed. This periodic "lift-fall" motion continues to provide effective impact and grinding for the debris.

[0052] Case 2: Excessive debris or jamming state. State description: There is too much debris inside the cutting wheel 33, which is too dense or mixed with abnormally tough materials, causing the grinding blocks 36 to be "buried" or jammed, unable to freely fall. Friction data signature: The friction force remains at a high level and there is no periodic peak fluctuation. The friction value is always maintained at a very high level, indicating that the sleeve 35 and the rotating shaft 32 are "stuck" and rotate synchronously without relative sliding. System response: Active alarm, the system sends a "grinding cavity jamming" alarm to the control center, prompting the operator to pay attention. Adjust the upstream process: The system can automatically pause the drilling process or adjust the feed parameters to reduce debris generation from the source. Trigger the cleaning program: The system can automatically increase the power of the suction device 323 to try to suck away some of the debris to reduce internal pressure. At the same time, the drive 341 can be controlled to make the cutting wheel 33 vibrate back and forth to try to loosen the jammed debris.

[0053] Case 3: Insufficient debris or idling state. State description: There is too little debris inside the cutting wheel 33, and the grinding blocks 36 lack sufficient resistance, causing the falling frequency to be too high or in a weightless bouncing state. Friction data signature: The friction force remains at a low level with small and chaotic fluctuations. Due to the lack of debris damping, the grinding blocks 36 may not be able to stably lift to the predetermined height and may slide down prematurely, resulting in small and chaotic fluctuations in the friction curve. State monitoring: Determine that the current state is "low load" or "idling". This is not necessarily a fault, but it can help the system understand the processing rhythm (such as the interval between two processes). Optimize energy consumption: The power of the suction device 323 and the drive 341 can be temporarily reduced or turned off intelligently to save energy. When new debris is detected (judged by the regular rise in friction), normal operation is resumed.

[0054] Case four: long fiber winding abnormal state. State description: long metal or non-metal fibers are generated during processing, which can be wound around the grinding block 36, the shaft sleeve 35 or the rotating shaft 32, hindering the normal movement. Friction force data characteristics: the friction force shows sustained medium-high frequency jitter or irregular stepwise rise. The winding will continuously bring additional irregular resistance to the rotation of the shaft sleeve 35. Identify abnormal mode: identify this "abnormal jitter" mode different from normal periodic fluctuations. Execute cleaning strategy: the rotating direction of the chip removal wheel 33 can be automatically reversed several times to try to "untangle" the wound fibers. At the same time, the turning of the arc-shaped baffle 38 can be combined to help destroy the fiber structure.

[0055] Case five: mechanical wear early warning state. State description: after long-term operation, the contact surface between the shaft sleeve 35 and the rotating shaft 32 is worn, causing the friction force baseline value to change. Friction force data characteristics: under the same working load, the long-term monitored friction force baseline value shows a slow but continuous one-way change trend (usually decreasing because the gap becomes larger). At the same time, the amplitude of the periodic friction force can also change. Predictive maintenance: instead of just post-alarm, it enters the advanced stage of predictive maintenance. When the friction force data trend exceeds the preset threshold, the system will issue an early warning that "the grinding mechanism is worn out, and it is recommended to arrange maintenance", so as to avoid sudden failure and realize planned production maintenance.

[0056] It should be noted that the relational terms such as first and second and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying that there is any such actual relationship or order between them. In addition, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or apparatus.

[0057] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A four-head drilling machine for machining metal parts, comprising a machine tool (1), four sets of gun drills (2), a guide table (3), and a clamping mechanism (4), characterized in that, The guide table (3) is fixed on the machine tool (1), and the clamping mechanism (4) is installed on the guide table (3) for clamping the workpiece (5). Four sets of gun drills (2) are arranged on both sides of the guide table (3) to cooperate with the workpiece (5) for processing. A collection groove (31) is provided on the guide table (3) for collecting fallen debris. Several rotating shafts (32) are rotatably arranged in the collection groove (31). The two ends of the rotating shafts (32) protrude from the two side walls of the collection groove (31). A cutting wheel (33) is fitted on the upper part. Several screen holes (331) are opened on the circumference of the surface of the cutting wheel (33). Adjacent cutting wheels (33) rotate and cooperate with each other. An air extraction groove (321) is opened in the middle of the rotating shaft (32), and one end of the air extraction groove (321) is an open structure. Several inlets (322) are opened at intervals on the lower surface of the rotating shaft (32). An extraction device (323) is connected to the open end of the rotating shaft (32). The extraction device (323) is connected to a recycling box (324). Several bushings (35) are movably sleeved on the surface of the rotating shaft (32). The bushings (35) are set corresponding to each of the inlets (322) and are located inside the cutting wheel (33). The bushings (35) are connected to a grinding block (36). The grinding block (36) is set with an arc-shaped structure and fits against the inner wall of the cutting wheel (33). Several sieve holes (361) are opened on both sides of the grinding block (36). A flow channel (362) is opened inside the grinding block (36). The flow channel (362) communicates with the sieve holes (361) and communicates with the inside of the bushings (35). The grinding block (36) is also a counterweight. There is a certain friction between the bushing (35) and the rotating shaft (32). The rotating shaft (32) is equipped with a friction sensing module that is used to detect the rotation state of each bushing (35). The area of ​​the second sieve hole (361) is smaller than the area of ​​the first sieve hole (331). When the shaft (32) rotates, the bushing (35) is driven to deflect. When it reaches a certain height, the potential energy of the grinding block (36) overcomes the friction and falls downwards. It works with the inner wall of the chip wheel (33) to further grind the internal debris, thereby further reducing the volume of the debris. When the grinding block (36) is at its lowest position, the flow channel (362) corresponds to the inlet (322). At this time, appropriately sized debris can enter through the second sieve hole (361) and enter the suction groove (321) through the flow channel (362) and the inlet (322). When the grinding block (36) rotates, the flow channel (362) and the inlet (322) are misaligned. The chipping wheel (33) is movably connected to two outer plates (37) on both sides. The outer plates (37) are sleeved on the rotating shaft (32). An arc-shaped baffle (38) is connected between the outer plates (37). A connecting frame (371) is fixed on one side of the outer plate (37). A second driver (372) is connected to the connecting frame (371). The second driver (372) is installed inside the guide platform (3). The surface of the collection groove (31) is provided with a corresponding sliding groove in cooperation with the connecting frame (371). The arc-shaped baffle (38) is set in contact with the outer surface of the chip wheel (33). The arc center angle of the arc baffle (38) is less than 90 degrees.

2. The four-head drilling machine for machining metal parts according to claim 1, characterized in that, One of the rotating shafts (32) is fitted with a gear 1 (325) at one end, and each of the rotating shafts (32) is fitted with a gear 2 (326) at the end. The guide platform (3) is connected to the collection groove (31) with a support frame (34). A driver 1 (341) is installed on one side of the support frame (34). A gear 3 (342) is fitted on the driving end of the driver 1 (341). A chain 1 is connected between the gear 1 (325) and the gear 3 (342), and a chain 2 is connected between each of the gear 2 (326).

3. A four-head drilling machine for machining metal parts according to claim 2, characterized in that, The arc-shaped baffle (38) has an arc-shaped groove in the middle, and an arc-shaped rotating plate (381) is movably arranged in the arc-shaped groove. The two sides of the arc-shaped rotating plate (381) are connected to driving gear blocks (382). A gear ring (373) is rotatably arranged on the outer plate (37). The gear ring (373) is provided with external teeth (3731) and internal teeth (3732). The external teeth (3731) cooperate with the driving gear blocks (382). A gear four (374) is rotatably arranged on the outer plate (37). The internal teeth (3732) cooperate with the gear four (374). The gear four (374) is connected to a driver three (375).

4. A four-head drilling machine for machining metal parts according to claim 3, characterized in that, The clamping mechanism (4) includes a bracket (41), on which a cylinder (42) is mounted. The driving end of the cylinder (42) is connected to a lifting plate (43). A mounting plate (44) is slidably connected to the lifting plate (43). A clamp (45) is mounted on one side of the mounting plate (44). The shaft of the clamp (45) passes through the mounting plate (44) and is connected to a driver (46).

5. A four-head drilling machine for machining metal parts according to claim 4, characterized in that, The bracket (41) is provided with a longitudinal slide rail, and a slide plate (47) is provided in cooperation with the longitudinal slide rail. A cylinder (48) is installed on the slide plate (47). The driving end of the cylinder (48) is connected to the mounting plate (44). Several guide rods (49) are fixed on the mounting plate (44). The guide rods (49) slide in cooperation with the slide plate (47).

6. A four-head drilling machine for machining metal parts according to claim 5, characterized in that, The machine tool (1) is equipped with a conveyor rail (6) for transporting workpieces (5).

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