A chip removal device, a numerically controlled machine tool and a chip removal method

Abstract

A kind of chip removal device, numerical control machine tool and chip removal method belong to numerical control machine tool field, chip removal device includes the chip removal mechanism being arranged on the table top below the middle processing area of bed body, the two sides of chip removal mechanism are respectively equipped with one pusher mechanism, pusher mechanism includes the pusher frame of U type, pusher frame is hinged with telescopic drive unit, the two sides of pusher frame are equipped with guide frame, the two sides of the end of pusher frame away from chip removal mechanism are fixed with cross bar, cross bar is slidably connected with guide frame, first slide and second slide being oppositely arranged are provided in guide frame, the end close to chip removal mechanism in guide frame is rotatably installed with reversing block, reversing block is used for the position switching of cross bar between first slide and second slide when pusher frame retreats, so that pusher frame retreats and lifts up.The cooperation of reversing block and cross bar makes pusher frame be able to automatically lift up and overturn in retreat stage, avoids pusher frame and table top residual chip contact, prevents the chip of retreat.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and in particular to a chip removal device, a CNC machine tool, and a chip removal method. Background Technology

[0002] With the rapid development of the new energy vehicle industry, die-cast body parts made of lightweight materials such as aluminum alloys are widely used in the manufacturing of new energy vehicle bodies due to their advantages such as light weight, high strength, and good formability. These die-cast body parts are usually characterized by complex structure, high dimensional accuracy requirements, and uneven machining allowances, requiring precision machining through multiple processes such as milling, drilling, and boring using specialized machine tools.

[0003] During the processing of die-cast body parts by specialized machine tools, a large amount of metal chips are generated. In order to avoid the impact of chips on the operation and life of the machine tool, the machine tool is usually equipped with a chip removal structure. The chip removal structure is located on one side of the machine tool, and a chip pushing structure such as a push plate is provided in the processing area. The push plate is connected to the telescopic end of the cylinder. The chip in the processing area is pushed to the chip removal structure through the push plate to achieve rapid chip removal.

[0004] Existing chip-pushing structures are directly driven by cylinders or rocker arms to achieve the reciprocating movement of the pusher plate. Although this can meet the chip-pushing requirements, the pusher plate has a single movement method. During the retraction process, it is easy to interfere with the chips remaining at the bottom of the machine bed, causing the chips to be pushed back to the processing area. This results in poor chip removal and a lack of targeted protective and drainage structures. Chips are also easy to scatter to the outside of the chip-pushing structure, further affecting the chip removal effect. Summary of the Invention

[0005] To address the technical problems of existing chip-removing structures in the background art, such as the limited movement of the pusher plate and its tendency to interfere with residual chips at the bottom of the machine bed during retraction, resulting in chips being pushed back into the machining area and poor chip removal efficiency, this invention provides a chip removal device, a CNC machine tool, and a chip removal method.

[0006] The technical solution of this invention is as follows:

[0007] This invention provides a chip removal device, including a chip removal mechanism disposed on a table below the machining area in the middle of the machine bed. A chip pushing mechanism is provided on each side of the chip removal mechanism. The chip pushing mechanism includes a U-shaped chip pushing frame, with a telescopic drive unit hinged to the chip pushing frame. Guide frames are provided on both sides of the chip pushing frame. Crossbars are fixedly provided on both sides of the chip pushing frame away from the chip removal mechanism. The crossbars are slidably connected to the guide frames. A first slide rail and a second slide rail are provided inside the guide frames, arranged vertically opposite each other. A reversing block is rotatably installed at one end of the guide frame near the chip removal mechanism. When the chip pushing frame retracts, the reversing block switches the position of the crossbar between the first and second slide rails, causing the chip pushing frame to retract and rise. By symmetrically setting chip-pushing mechanisms on both sides of the chip removal mechanism, chips on both sides of the table can be cleaned simultaneously, with a large cleaning coverage area and significantly improved chip removal efficiency. The U-shaped chip-pushing frame can more comprehensively wrap the chips on the table, preventing chips from leaking out from both sides of the frame during the pushing process. The cooperation of the first slide, the second slide and the reversing block structurally realizes the lifting function when the chip-pushing frame retracts, avoiding the problem of chip-carrying back when the chip-pushing structure retracts, and ensuring the continuity and thoroughness of chip removal.

[0008] Preferably, the guide frame includes a first guide section and a second guide section. The first guide section is a channel steel structure, and the second guide section is an L-shaped elongated structure. The second guide section is fixedly installed at the end of the first guide section near the chip removal mechanism, extending out of the table and located above the chip removal mechanism. The channel steel structure of the first guide section provides stable sliding space for the crossbar, preventing it from deviating during sliding and ensuring the straightness of the chip pusher frame's movement, thereby ensuring accurate chip pushing path. The L-shaped structure of the second guide section extends out of the table and covers the chip removal mechanism. On the one hand, it guides the end of the chip pusher frame near the chip removal mechanism, preventing positional deviation when the chip pusher frame pushes chips to the chip removal mechanism. On the other hand, it forms a protective barrier to prevent the chip pusher frame from falling during the pushing process.

[0009] Preferably, the first slide, the second slide, and the reversing block are all disposed within the first guide section, with a partition between the first and second slides, and the reversing block located between the partition and the second guide section. Concentrating the guiding and reversing components within the first guide section makes the structural layout more compact and reduces the space occupied inside the machine tool. The partition separates the first slide (chip-pushing channel) from the second slide (return and lifting channel), preventing the crossbar from accidentally entering the other slide during sliding, ensuring the accuracy of slide switching, ensuring stable and reliable reversing action, and reducing the risk of structural jamming.

[0010] Preferably, the reversing block is rotatably connected to the first guide portion via a rotating shaft, with the rotating shaft located near the end of the reversing block adjacent to the partition. This arrangement of the rotating shaft near the partition creates a lever structure where the end near the partition is the fulcrum and the end away from the partition is the movable end. When the crossbar pushes or squeezes the reversing block, only a small force is needed to flip the reversing block, reducing the load on the telescopic drive unit and lowering energy consumption. At the same time, this fulcrum position ensures that the reversing block automatically flips and resets under gravity.

[0011] Preferably, the end of the reversing block closest to the partition is the overlapping end, and the shape of the corresponding end of the partition matches the overlapping end. The end of the partition furthest from the reversing block is the transition end, which has a downward-sloping surface. The overlapping end and the end of the partition are matched in shape, so that when the reversing block is flipped to be parallel to the partition, the two can overlap tightly to form a smooth transition channel, ensuring that the crossbar can slide smoothly from the reversing block to above the partition, avoiding the crossbar getting stuck due to the connection gap. The downward-sloping surface of the transition end provides guidance for the crossbar in the later stage of retraction, allowing the crossbar to slide smoothly from the second slide to the first slide, ensuring the smoothness of the reset action and avoiding impact damage between the chip pusher frame and the table during reset.

[0012] Preferably, the outer wall of the end of the chip-pushing frame near the chip removal mechanism is hinged to the telescopic drive unit via a connecting shaft and a joint. A guide block is mounted on the connecting shaft, and the guide block is slidably connected to the second guide part. The hinge between the connecting shaft and the joint allows the telescopic drive unit to not only drive the chip-pushing frame to move but also to meet the needs of tilting and lifting the chip-pushing frame. The sliding engagement between the guide block and the second guide part further provides dual guidance for the movement of the chip-pushing frame, preventing the frame from swaying or tilting during the pushing process.

[0013] Preferably, the chip removal mechanism includes a first chip conveyor, a second chip conveyor, and a chip removal trolley. The first chip conveyor is located below the central machining area inside the machine bed, and the second chip conveyor is located outside the machine bed. The first and second chip conveyors are connected, and their extension directions are perpendicular. The chip removal trolley is positioned below the end of the second chip conveyor furthest from the first chip conveyor. The first chip conveyor, located below the machining area, can directly receive falling chips and chips pushed by the chip pushing mechanism, shortening the chip transport path and reducing the time chips remain inside the machine bed. The vertically connected first and second chip conveyors enable the turning and transport of chips from inside the machine bed to the outside, avoiding the chip removal structure occupying the operating space around the machine tool's machining area and improving the flexibility of the workshop layout. The chip removal trolley, working in conjunction with the second chip conveyor, enables batch collection and transfer of chips, eliminating the need for frequent manual cleaning of the chip conveyors, reducing the labor intensity of operators, and preventing chips from scattering during transfer, thus maintaining a clean workshop environment.

[0014] A CNC machine tool includes the aforementioned chip removal device, which can effectively solve the problem of chips being pushed back and scattered during chip removal, ensuring the cleanliness of the processing area, preventing chips from causing wear on precision components such as machine tool guideways and cutting tools, and extending the service life of the machine tool.

[0015] A chip removal method, comprising:

[0016] Some metal chips generated during processing fall directly onto the first chip conveyor, while others fall onto the tables on either side of the first chip conveyor. A chip-pushing mechanism then pushes the chips from the tables back onto the first chip conveyor. The chips on the first chip conveyor are then transported to the second chip conveyor, and from there to a chip removal trolley. The trolley then transfers the chips to a designated location. This direct receiving and dual-side pushing method ensures comprehensive chip collection from the processing area, preventing chip accumulation on the tables. The step-by-step transport of chips from the first and second chip conveyors to the chip removal trolley forms a complete collection, transport, and transfer process, ensuring full control over the chips and reducing the risk of scattering.

[0017] Preferably, the working process of the chip-pushing mechanism is as follows: the telescopic drive unit pushes the chip-pushing frame to move towards the first chip conveyor. During the movement, the crossbar moves along the first slide rail. At this time, the chip-pushing frame is in contact with the table surface. When the crossbar moves to the position of the reversing block, the crossbar pushes the reversing block to flip and move to the side of the reversing block away from the partition. The reversing block automatically returns to the tilted state under the action of gravity. The chip-pushing frame pushes the metal chips on the table surface onto the first chip conveyor. After the chip-pushing is completed, the chip-pushing frame retracts. The crossbar moves along the reversing block to the second slide rail above the partition and slides. At this time, the end of the chip-pushing frame away from the first chip conveyor flips and tilts up to lift the chip-pushing frame and prevent the metal chips from being pulled back. Under the guidance of the transition end, the crossbar moves back into the first slide rail, and the chip-pushing frame retracts and resets. During the chip-pushing phase, the crossbar slides along the first slide rail to ensure the chip-pushing frame is in contact with the table surface, thoroughly pushing the chips on the table surface to the first chip conveyor, reducing residue. The reversing block automatically resets due to gravity, requiring no additional power, simplifying the control process, and reducing energy consumption and failure risk. During the retraction phase, the crossbar enters the second slide rail along the reversing block, causing the chip-pushing frame to rise, preventing the chip-pushing frame from contacting residual chips on the table surface, and preventing the chip-pushing structure from carrying chips back during retraction.

[0018] As can be seen from the above technical solutions, the advantages of the present invention are:

[0019] 1. The combined use of the reversing block and the crossbar allows the chip-pushing frame to adjust its position relative to the table as needed. During the chip-pushing phase, the crossbar slides along the first slide to ensure that the chip-pushing frame is in contact with the table, which can completely push the chips on the table to the first chip conveyor, reducing residue. During the retraction phase, the crossbar enters the second slide along the reversing block, which drives the chip-pushing frame to rise, avoiding contact between the chip-pushing frame and the residual chips on the table, and preventing the chip-pushing structure from retracting chips.

[0020] 2. The overlapping end and the end of the partition are matched in shape so that when the reversing block is flipped to be parallel to the partition, the two can overlap tightly to form a smooth transition channel. This ensures that the crossbar can slide smoothly from the reversing block to the top of the partition and avoids the crossbar getting stuck due to the connection gap. The downward slope of the transition end provides a guide for the crossbar in the later stage of retraction, so that the crossbar can slide smoothly from the second slide back to the first slide, ensuring the smoothness of the reset action and avoiding impact damage between the chip pusher frame and the table during reset. Attached Figure Description

[0021] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of a CNC machine tool according to one or more embodiments of the present invention;

[0023] Figure 2 This is a schematic diagram showing the positional relationship between the chip pushing mechanism and the chip removal mechanism according to one or more embodiments of the present invention;

[0024] Figure 3 This is a schematic diagram of the chip-pushing mechanism according to one or more embodiments of the present invention;

[0025] Figure 4 This is a schematic diagram illustrating the cooperation relationship between the inner side of the guide frame and the crossbar according to one or more embodiments of the present invention;

[0026] Figure 5 This is a schematic diagram of the operation of the chip-pushing mechanism according to one or more embodiments of the present invention;

[0027] Figure 6 This is a schematic diagram of the protective mechanism according to one or more embodiments of the present invention;

[0028] The components represented by the various reference numerals in the diagram are:

[0029] 1. Chip removal mechanism; 2. Chip pushing mechanism; 3. Protective mechanism; 4. Bed; 41. Table; 5. Turntable; 6. First chip conveyor; 7. Second chip conveyor; 8. Chip removal trolley; 9. Chip pushing frame; 10. Horizontal frame; 11. Side frame; 12. Reinforcing rib; 13. Connecting shaft; 14. Guide assembly; 15. Guide frame; 151. First guide section; 152. Second guide section; 16. Reversing block; 17. Guide block; 18. Partition; 19. First slide rail; 20. Second slide rail; 21. Transition end; 22. Drive assembly; 23. Telescopic drive unit; 24. Connector; 25. Operator side pedal; 26. Turntable side guide plate; 27. Loading gate side guide plate; 28. Skirt; 29. ​​Crossbar. Detailed Implementation

[0030] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0031] Example 1

[0032] In a typical embodiment of the present invention, such as Figures 2-6 As shown, a chip removal device is proposed, including: a chip removal mechanism 1, a chip pushing mechanism 2, and a protective mechanism 3. The chip removal mechanism 1 is located below the middle processing area inside the machine bed 4 to receive metal chips. The chip pushing mechanism 2 is also located below the middle processing area inside the machine bed 4 and on both sides of the chip removal mechanism 1 to push the metal chips onto the chip removal mechanism 1, ensuring effective discharge of metal chips and preventing their accumulation. The protective mechanism 3 is located above the chip pushing mechanism 2 to protect the chip pushing mechanism 2 and also to guide the metal chips, ensuring that the metal chips fall within the working range of the chip pushing mechanism 2 and avoiding dead corners.

[0033] like Figure 2As shown, the chip removal mechanism 1 includes a first chip conveyor 6, a second chip conveyor 7, and a chip removal trolley 8. Both the first chip conveyor 6 and the second chip conveyor 7 are scraper-type chip conveyors. The first chip conveyor 6 is located below the middle processing area inside the bed 4, and the second chip conveyor 7 is located outside the bed 4. The extension directions of the first chip conveyor 6 and the second chip conveyor 7 are perpendicular. In this embodiment, the first chip conveyor 6 is arranged longitudinally, and the second chip conveyor 7 is arranged laterally. One end of the second chip conveyor 7 is located below the head of the first chip conveyor 6 to receive the metal chips conveyed by the first chip conveyor 6. The chip removal trolley 8 is located below the end of the second chip conveyor 7 away from the first chip conveyor 6, that is, the chip removal trolley 8 is located below the head of the second chip conveyor 7 to receive the metal chips conveyed by the second chip conveyor 7 and transfer the metal chips to a designated position.

[0034] Two chip-pushing mechanisms 2 are provided and distributed on both sides of the first chip conveyor 6. In this embodiment, the upper surface of the first chip conveyor 6 is lower than the bottom table 41 of the middle processing area inside the bed 4. The chip-pushing mechanism 2 is set on the table 41 on both sides of the first chip conveyor 6, so that the chip-pushing mechanism 2 can be used to collect the metal chips falling on the table 41 and push them to the first chip conveyor 6, and then transfer them to the chip removal trolley 8 through the second chip conveyor 7.

[0035] In this embodiment, two turntables 5 are also installed inside the bed 4. The two turntables 5 are arranged opposite each other and located above the first chip conveyor 6 and the chip pushing mechanism 2. The two turntables 5 are used to clamp and fix the workpiece, and can drive the workpiece to rotate around the axis as needed during the processing. After the processing is completed, the metal chips fall onto the table 41 at the bottom of the middle area inside the bed 4 and onto the first chip conveyor 6. The chip pushing mechanism 2 can push the metal chips on the table 41 onto the first chip conveyor 6 for discharge.

[0036] like Figure 2 As shown, the chip-pushing mechanism 2 includes a chip-pushing frame 9, a guide assembly 14, and a drive assembly 22. The chip-pushing frame 9 is a U-shaped frame and is movably mounted on the bottom table 41 in the middle area of ​​the bed 4 to push metal chips onto the first chip conveyor 6. The chip-pushing frame 9 is connected to the drive assembly 22 and can move towards / away from the first chip conveyor 6 under the drive of the drive assembly 22. The guide assembly 14 is located on both sides of the chip-pushing frame 9 and can guide the chip-pushing frame 9 during its forward and backward movement. At the same time, it can also change the angle between the chip-pushing frame 9 and the table 41 during the backward movement, so that the chip-pushing frame 9 changes from being parallel to the table 41 to having an angle during the backward movement, thereby preventing the chip-pushing frame 9 from pulling the metal chips on the table 41 back when it moves backward, thus ensuring the chip-pushing effect.

[0037] like Figure 3 and Figure 4As shown, the chip-pushing frame 9 includes a horizontal frame 10, side frames 11, and reinforcing ribs 12. There are two side frames 11, which are fixedly connected to both ends of the horizontal frame 10 by bolts, thus forming a U-shaped frame structure. The side wall of the horizontal frame 10 is fixedly connected to the side wall of the side frame 11 by the reinforcing ribs 12. The reinforcing ribs 12 are also bolted to the horizontal frame 10 and the side frames 11 to improve the overall strength of the chip-pushing frame 9. The bolted connection facilitates quick assembly and disassembly, reducing the difficulty of integrated welding. The side of the side frame 11 away from the horizontal frame 10 is hinged to the drive assembly 22. While moving with the help of the drive assembly 22, it can also ensure the overall flipping capability of the chip-pushing frame 9, making it easy to change the angle between it and the table 41.

[0038] The drive assembly 22 includes a telescopic drive unit 23 and a connector 24. The telescopic drive unit 23 is a telescopic cylinder. The telescopic drive unit 23 is fixedly installed on the table 41. There are two telescopic drive units 23, which are distributed on both sides of the chip pusher frame 9. The telescopic drive units 23 are parallel to the side frame 11. The telescopic end of the telescopic drive unit 23 is fixedly installed with a connector 24. The connector 24 has an annular connecting part and a bearing is provided in the connecting part. A connecting shaft 13 is fixedly provided on the side of the side frame 11 away from the horizontal frame 10. The connecting shaft 13 is fixedly connected to the inner ring of the bearing inside the connecting part, so that the telescopic drive unit 23 and the adjacent side frame 11 are hinged, which ensures the lateral driving capability without hindering the flipping of the chip pusher frame 9.

[0039] The guide assembly 14 includes a guide frame 15, a reversing block 16, a guide block 17, and a partition 18. Two guide frames 15 are provided and fixedly mounted on the platform 41. The two guide frames 15 are positioned opposite each other on both sides of the chip-pushing frame 9, parallel to the side frames 11. Each side frame 11 has a guide frame 15 between it and its adjacent telescopic drive unit 23 for guiding the movement and rotation of the chip-pushing frame 9. The partition 18 is horizontally fixedly installed inside the guide frame 15, dividing the interior of the guide frame 15 into upper and lower slides to respectively guide the fitted surfaces. The chip-pushing frame 9 moves in both the attached and separated states. The reversing block 16 is rotatably disposed within the guide frame 15 and is located at one end of the guide frame 15 near the first chip conveyor 6. The reversing block 16 can assist the reversing of the chip-pushing frame 9 so that the chip-pushing frame 9 in the attached state flips to the separated state and retracts. The guide block 17 is installed on the side of the side frame 11, specifically on the connecting shaft 13. The guide block 17 is slidably connected to the guide frame 15 to guide the movement of the chip-pushing frame 9 and prevent the chip-pushing frame 9 from deflecting during the movement.

[0040] It should be noted that the attached state of the chip-pushing frame 9 mentioned in this embodiment refers to the bottom of the chip-pushing frame 9 being attached to the table surface 41; the separated state refers to the chip-pushing frame 9 being flipped so that its bottom is separated from the table surface 41.

[0041] like Figure 4 As shown, the guide frame 15 includes a first guide portion 151 and a second guide portion 152. The first guide portion 151 is a channel steel structure, and the second guide portion 152 is a long strip structure with an L-shaped cross-section. The second guide portion 152 is fixedly installed at one end of the first guide portion 151 near the first chip conveyor 6. The lower surface of the second guide portion 152 is flush with the lower surface of the first guide portion 151. The first guide portion 151 is placed on the table 41, and the second guide portion 152 extends out of the table 41 and is located above the first chip conveyor 6. It plays a guiding role and also a supporting role to prevent the chip pusher frame 9 from falling.

[0042] In this embodiment, the table 41 is tilted toward the first chip conveyor 6, so that the second guide portion 152 is also tilted toward the first chip conveyor 6, which can prevent metal chips from accumulating on the second guide portion 152.

[0043] The opening of the first guide portion 151 faces the adjacent side frame 11 to facilitate cooperation with the side frame 11. The partition 18 is fixedly installed inside the first guide portion 151 by welding. The partition 18 extends along the length of the first guide portion 151 to divide the internal space of the first guide portion 151 into upper and lower parts, namely the first slide 19 and the second slide 20. The first slide 19 is located below the second slide 20. The first slide 19 is used to guide the chip pusher frame 9 during the forward process, at which time the chip pusher frame 9 is in a close-fitting state. The second slide 20 is used to guide the chip pusher frame 9 during the retraction process, at which time the chip pusher frame 9 is in a separated state.

[0044] The reversing block 16 is rotatably disposed within the first guide portion 151 and located at one end of the first guide portion 151 near the first chip conveyor 6. The reversing block 16 is located between the partition plate 18 and the second guide portion 152 to guide the flipping of the chip pusher frame 9. Specifically, the reversing block 16 is rotatably connected to the first guide portion 151 via a rotating shaft. The rotating shaft is close to one end of the reversing block 16 adjacent to the partition plate 18, so that the reversing block 16 on the side of the rotating shaft near the partition plate 18 is shorter than the other side. Thus, the reversing block 16 can be tilted under the action of gravity (in a free state) to block the end of the first slide 19 near the first chip conveyor 6.

[0045] A crossbar 29 is fixedly provided on the outer wall of the side frame 11 away from the first chip conveyor 6. The end of the crossbar 29 away from the side frame 11 is inserted into the slide of the first guide part 151. Specifically, when the chip pusher frame 9 moves forward, the crossbar 29 moves along the first slide 19; when the chip pusher frame 9 moves backward, the crossbar 29 moves along the second slide 20.

[0046] like Figure 5 As shown, the specific reversing process of the crossbar 29 is as follows: When the chip-pushing frame 9 moves forward to push the chips, the crossbar 29 moves along the first slide rail 19. At this time, the chip-pushing frame 9 is in contact with the table surface 41 and pushes the metal chips on the table surface 41 towards the direction of the first chip conveyor 6. When the telescopic drive unit 23 extends to its limit position, the crossbar 29 pushes the reversing block 16 to flip and move to the side of the reversing block 16 away from the partition 18. The reversing block 16 automatically returns to the tilted state under the action of gravity. When the chip-pushing frame 9 returns to its original position... When retracting, the crossbar 29 moves along the reversing block 16 to the top of the partition 18 to enter the second slide 20. The crossbar 29 moves along the second slide 20. At this time, the end of the chip pusher frame 9 away from the guide block 17 flips and tilts up, so that the chip pusher frame 9 separates from the table surface 41 to prevent the metal chips from being pulled back. Under the guidance of the transition end 21 of the partition 18, the crossbar 29 moves back into the first slide 19, so that the chip pusher frame 9 retracts and resets and re-fits the table surface 41 to prepare for subsequent chip pushing work.

[0047] In this embodiment, the end of the reversing block 16 near the partition 18 is the overlapping end, and the corresponding end shape of the partition 18 is adapted to it. Thus, when the reversing block 16 rotates to be parallel to the partition 18, the overlapping end of the reversing block 16 overlaps with the end of the adjacent partition 18. Through the adaptation of the end shape, the reversing block 16 and the upper surface of the partition 18 are flush, ensuring the smooth reversing of the crossbar 29. The end of the partition 18 away from the reversing block 16 is the transition end 21. The transition end 21 has a downward inclined surface, which can guide the crossbar 29 and avoid collision damage between the chip pusher frame 9 and the table surface 41 caused by the crossbar 29 falling directly.

[0048] The guide block 17 is located outside the first guide part 151 and is slidably connected to the second guide part 152. The guide block 17 has a groove that matches the vertical section of the second guide part 152. The guide block 17 is slidably connected to the second guide part 152 through the groove and is guided and limited.

[0049] The protective mechanism 3 includes an operator-side foot pedal 25, a turntable-side guide plate 26, a loading gate-side guide plate 27, and a skirt 28. The operator-side foot pedal 25, turntable-side guide plate 26, and loading gate-side guide plate 27 are all fixedly connected to the bed 4 by bolts. The operator-side foot pedal 25 is fixedly installed at the operator's working position. The turntable-side guide plate 26 is fixedly installed below the turntable 5. The loading gate-side guide plate 27 is fixedly installed on the side of the loading gate. The skirt 28 is fixedly connected to the operator-side foot pedal 25, turntable-side guide plate 26, and loading gate-side guide plate 27. Figure 6 As shown, the skirt 28 is used to cover the main body area of ​​the chip pushing mechanism 2 to protect the chip pushing mechanism 2 and prevent metal chips from damaging the telescopic drive unit 23. It also serves as a guide to direct the metal chips into the chip pushing range of the chip pushing frame 9.

[0050] Example 2

[0051] In another typical embodiment of the present invention, such as Figure 1 As shown, a CNC machine tool is proposed, including a bed 4, a rotary table 5, and the chip removal device mentioned in Embodiment 1. The chip removal device includes a chip removal mechanism 1, a chip pushing mechanism 2, and a protective mechanism 3. The chip removal mechanism 1 is located below the middle machining area inside the bed 4 to receive metal chips. The chip pushing mechanism 2 is also located below the middle machining area inside the bed 4 and on both sides of the chip removal mechanism 1 to push the metal chips onto the chip removal mechanism 1, ensuring effective discharge of metal chips and preventing their accumulation. The protective mechanism 3 is located above the chip pushing mechanism 2 to protect the chip pushing mechanism 2 and also serves as a guide for the metal chips, allowing them to fall within the working range of the chip pushing mechanism 2 and avoiding dead zones.

[0052] Example 3

[0053] In another typical embodiment of the present invention, a chip removal method is provided, comprising:

[0054] The workpiece is clamped by two turntables 5 for processing. Some of the metal chips generated during processing fall directly onto the first chip conveyor 6, while some metal chips fall onto the table surfaces 41 on both sides of the first chip conveyor 6 under the guidance of the skirt 28. The chip pushing mechanism 2 pushes the metal chips on the table surfaces 41 onto the first chip conveyor 6.

[0055] Specifically, the telescopic end of the telescopic drive unit 23 extends towards the first chip conveyor 6, so as to push the chip-pushing frame 9 as a whole towards the first chip conveyor 6 through the cooperation of the connector 24 and the connecting shaft 13. During the movement, the crossbar 29 moves along the first slide rail 19. At this time, the chip-pushing frame 9 is in contact with the table 41 and pushes the metal chips on the table 41 towards the first chip conveyor 6. When the crossbar 29 moves to the position of the reversing block 16, the crossbar 29 pushes the reversing block 16 to flip and move to the side of the reversing block 16 away from the partition 18. The reversing block 16 automatically returns to the tilted state under the action of gravity. The chip-pushing frame 9 pushes the metal chips on the table 41 onto the first chip conveyor 6. After the chip pushing is completed, the push... As the chip-pushing frame 9 retracts, the crossbar 29 moves along the reversing block 16 to the top of the partition 18. As the crossbar 29 continues to move upward along the reversing block 16, it drives the reversing block 16 to rotate until it is parallel to and overlaps with the partition 18. The crossbar 29 enters the second slide rail 20 and moves along the second slide rail 20. At this time, the end of the chip-pushing frame 9 away from the first chip ejector 6 flips and tilts up, causing the chip-pushing frame 9 to separate from the table surface 41, preventing the metal chips from retracting. After the crossbar 29 moves to the transition end 21 of the partition 18, under the guidance of the transition end 21, the crossbar 29 moves back into the first slide rail 19, causing the chip-pushing frame 9 to retract and reset and re-fit against the table surface 41, in preparation for subsequent chip-pushing work.

[0056] The metal chips that fall onto the first chip conveyor 6 are conveyed to the second chip conveyor 7 by the scraper, and then conveyed to the chip removal trolley 8 by the second chip conveyor 7. Finally, the chip removal trolley 8 is used to transfer the metal chips to the designated location.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A chip removal device, comprising: A chip removal mechanism (1) is installed on the table (41) below the middle machining area of ​​the bed (4). The chip removal mechanism (1) has a chip pushing mechanism (2) on each side. The chip pushing mechanism (2) includes a U-shaped chip pushing frame (9). The chip pushing frame (9) is hinged to a telescopic drive unit (23). Guide frames (15) are provided on both sides of the chip pushing frame (9). A crossbar (29) is fixedly provided on both sides of the end of the chip pushing frame (9) away from the chip removal mechanism (1). The crossbar (29) is slidably connected to the guide frame (15). The guide frame (15) has a first slide rail (19) and a second slide rail (20) arranged vertically opposite each other. A reversing block (16) is rotatably installed at one end of the guide frame (15) near the chip removal mechanism (1). When the chip pushing frame (9) retracts, the reversing block (16) is used to move the crossbar (29) between the first slide rail (19) and the second slide rail (20). The position switching between the two causes the chip pusher frame (9) to retract and rise. The guide frame (15) includes a first guide part (151) and a second guide part (152). The first slide (19), the second slide (20) and the reversing block (16) are all located in the first guide part (151). A partition (18) is provided between the first slide (19) and the second slide (20). The reversing block (16) is located between the partition (18) and the second guide part (152). The reversing block (16) is rotatably connected to the first guide part (151) through a rotating shaft. The rotating shaft is close to the end of the reversing block (16) adjacent to the partition (18). The end of the reversing block (16) close to the partition (18) is the overlapping end. The shape of the corresponding end of the partition (18) is adapted to the overlapping end. The end of the partition (18) away from the reversing block (16) is the transition end (21). The transition end (21) has a downward inclined surface.

2. The chip removal device according to claim 1, characterized in that, The first guide part (151) is a channel steel structure, and the second guide part (152) is a long strip structure with an L-shaped cross section. The second guide part (152) is fixedly installed at one end of the first guide part (151) near the chip removal mechanism (1). The second guide part (152) extends out of the table (41) and is located above the chip removal mechanism (1).

3. The chip removal device according to claim 2, characterized in that, The outer wall of the chip pusher frame (9) near the chip removal mechanism (1) is hinged to the telescopic drive unit (23) via the connecting shaft (13) and the joint (24). A guide block (17) is installed on the connecting shaft (13), and the guide block (17) is slidably connected to the second guide part (152).

4. The chip removal device according to claim 1, characterized in that, The chip removal mechanism (1) includes a first chip conveyor (6), a second chip conveyor (7), and a chip removal trolley (8). The first chip conveyor (6) is located below the middle machining area inside the bed (4). Two chip pushing mechanisms (2) are located on both sides of the first chip conveyor (6). The second chip conveyor (7) is located on the outside of the bed (4). The first chip conveyor (6) is connected to the second chip conveyor (7). The extension directions of the first chip conveyor (6) and the second chip conveyor (7) are perpendicular. The chip removal trolley (8) is located below the end of the second chip conveyor (7) away from the first chip conveyor (6).

5. A CNC machine tool, characterized in that, Includes the chip removal device as described in any one of claims 1-4.

6. A chip removal method, employing the chip removal device as described in claim 4, characterized in that, include: Some of the metal chips generated during processing fall directly onto the first chip conveyor (6), and some of the metal chips fall onto the tables (41) on both sides of the first chip conveyor (6). The chip pushing mechanism (2) pushes the metal chips on the tables (41) onto the first chip conveyor (6). The metal chips that fall onto the first chip conveyor (6) are conveyed to the second chip conveyor (7) and then conveyed to the chip removal trolley (8) by the second chip conveyor (7). The chip removal trolley (8) is used to transfer the metal chips to the designated location.

7. The chip removal method according to claim 6, characterized in that, The working process of the chip pushing mechanism (2) is as follows: the telescopic drive unit (23) pushes the chip pushing frame (9) to move toward the first chip conveyor (6). During the movement, the crossbar (29) moves along the first slide (19), and the chip pushing frame (9) is in contact with the table (41). When the crossbar (29) moves to the position of the reversing block (16), the crossbar (29) pushes the reversing block (16) to flip and move to the side of the reversing block (16) away from the partition (18). The reversing block (16) automatically resets to the tilted state under the action of gravity, and the chip pushing frame (9) pushes the metal chips on the table (41) onto the first chip conveyor (6). After the chip pushing is completed, the chip pushing frame (9) retracts, the crossbar (29) moves along the reversing block (16) to the second slide (20) above the partition (18) and slides, the end of the chip pushing frame (9) away from the first chip ejector (6) flips up to lift the chip pushing frame (9) and prevent the metal chips from being pulled back. Under the guidance of the transition end (21), the crossbar (29) moves back to the first slide (19) and the chip pushing frame (9) retracts and resets.

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