Centrifugal type chip breaking device for numerical control machining center

Abstract

The present application belongs to the technical field of chip removal device, and discloses a centrifugal type crushing chip removal device of numerical control machining center, which comprises a base, a chain plate conveyor, a fixed shell, a rotating drum and a machine frame.The chain plate conveyor is arranged in a Z shape as a whole, and the machine frame is fixedly connected with the base.The fixed shell is installed at the tail end of the machine frame of the chain plate conveyor.The rotating drum is rotatably arranged in the fixed shell, and the circumferential side wall of the rotating drum is provided with mesh holes for discharging cutting fluid near the upper part, and a rib strip protruding radially inward is arranged at the lower part of the inner wall of the rotating drum.The rotating drum is arranged at the end of the chain plate conveyor, so that the chips can fall into the interior of the rotating drum, and the chips are rapidly separated from the cutting fluid by centrifugal force during the rotation of the rotating drum.The cutting fluid is introduced into the liquid guide pipe through the liquid passage gap between the rotating drum and the fixed shell, and finally flows back to the machining center, so that the efficient recovery of the cutting fluid is realized, the utilization rate of the cutting fluid is improved, and the subsequent processing burden is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of chip removal devices, specifically relating to a centrifugal crushing and chip removal device for CNC machining centers. Background Technology

[0002] CNC machining centers are essential equipment widely used in modern manufacturing. When machining metal parts, they generate a large amount of chips. To ensure smooth machining and maintain a clean working environment, chip removal devices are typically required. These devices primarily remove chips generated during machining from the machining area, preventing chip accumulation from affecting machine operation. They also facilitate the recovery of cutting fluid and subsequent chip processing. Various types of chip removal devices exist, including chain conveyors and spiral conveyors. Their core function is to transport chips along a specific path to the outside of the machine tool or a centralized collection point.

[0003] However, existing chip removal devices still have several shortcomings: First, the cutting fluid separation efficiency is low. Existing chip removal devices can only transport and lift chips. During the transport process, the cutting fluid mainly relies on its own gravity to slowly separate from the chips, resulting in chips still carrying some cutting fluid when discharged. This not only prevents the cutting fluid from being fully recycled but also increases the difficulty of subsequent cleaning and treatment. Second, in actual machining in CNC machining centers, some cutting operations produce long chips. These chips are prone to entanglement during chip removal, causing the chip removal device to malfunction or even be damaged. Furthermore, long chips occupy a large space when stored, making centralized management and processing inconvenient. In addition, existing chip removal devices are usually only responsible for exporting chips and cannot pulverize them. Due to the varying sizes of the chips, uncrushed chips may occupy a large volume when stored, which is not conducive to subsequent storage and transportation. Summary of the Invention

[0004] This invention provides a centrifugal chip crushing and removal device for CNC machining centers, which solves the problems mentioned in the background art, such as low cutting fluid separation efficiency, easy entanglement of long chips, and ineffective chip crushing and storage space occupation during chip conveying.

[0005] The technical solution adopted in this invention is: a centrifugal crushing and chip removal device for CNC machining centers, comprising:

[0006] Base;

[0007] The chain plate conveyor is arranged in a Z-shape and includes a frame that is fixedly connected to the base.

[0008] A fixed housing is installed at the tail end of the frame of the chain conveyor.

[0009] A rotating drum is rotatably arranged in the fixed shell, and a circumferential side wall of the rotating drum is provided with mesh holes for discharging cutting fluid at a position close to the upper portion, and a rib protruding radially inward is arranged at a lower region of the inner wall of the rotating drum;

[0010] A crushing seat is arranged in the rotating drum and forms an annular crushing gap with the inner wall of the rotating drum.

[0011] The cutting chips guided by the chain plate conveyor fall into the rotating drum, and the rotating drum applies centrifugal force to the cutting chips during rotation to separate the cutting chips from the cutting fluid. Then, the cutting chips move downward under the action of gravity and are crushed by the rib of the inner wall of the rotating drum and the crushing seat during falling, and finally are discharged from the rotating drum.

[0012] The upper end of the crushing seat is in inverted V shape or upward protruding hemispherical structure, and the crushing seat is located directly below the discharge end of the chain plate conveyor, so that the cutting chips falling from the chain plate conveyor can fall on the crushing seat.

[0013] The outer wall of the crushing seat below is in tapered structure with the width increasing from top to bottom, the inner cavity of the rotating drum is in tapered structure with the width increasing from top to bottom, and the taper of the inner wall of the rotating drum is greater than that of the outer wall of the crushing seat, so that the crushing gap between the rotating drum and the crushing seat has a radial dimension decreasing from top to bottom.

[0014] The crushing seat is connected to the fixed shell by locking bolts, and the number of the locking bolts is at least two. A spring is sleeved outside the locking bolt, and one end of the spring abuts against the inner side surface of the head of the locking bolt, and the other end of the spring abuts against the outer wall of the fixed shell.

[0015] The rotating drum is arranged in the inner portion of the fixed shell by a bearing, and a gear ring is fixed in the circumferential direction of the upper end of the rotating drum. A support leg extending downward is fixed on the frame, and a connecting frame is fixed between the support leg and the fixed shell. A centrifugal motor is fixed on the connecting frame, and a driving wheel is arranged at the shaft end of the centrifugal motor. The driving wheel is engaged with the gear ring to drive the rotating drum to rotate.

[0016] An annular liquid passage gap is arranged between the rotating drum and the fixed shell, and the liquid passage gap is used to collect the cutting fluid separated from the cutting chips. An upward extending baffle ring is arranged below the fixed shell, and a liquid guide pipe is arranged at the bottom of the fixed shell, and the other end of the liquid guide pipe extends into the numerical control machining center.

[0017] A plurality of chip outlets are arranged at the bottom of the fixed shell and in the region inside the baffle ring, and the chip outlets are uniformly distributed around the center of the fixed shell.

[0018] The base is provided with a double-spiral conveying mechanism above the chain plate conveyor feeding end, the double-spiral conveying mechanism comprises two main shafts rotating synchronously and reversely, and the main shafts are fixed with spiral blades in the circumferential direction; the center distance of the two main shafts is less than the outer diameter of the spiral blades, so that the outer edge of any spiral blade can enter the inside envelope area of the adjacent main shaft spiral blade, so that the two spiral blades form a meshing structure interlaced with each other in the rotation process.

[0019] The power device for driving the double-spiral conveying mechanism to rotate is further included.

[0020] The power device comprises a first gear mounted on the rotating shaft of the chain plate conveyor, a rotatable worm is mounted inside the base, the worm is parallel to the rotating shaft axis, a second gear meshing with the first gear is mounted on the worm, and the worm has two meshing tooth parts with opposite rotation directions, and the two meshing tooth parts are respectively arranged in meshing relationship with the worm wheels on the two main shafts.

[0021] The beneficial effects of the present application are:

[0022] The present application sets a rotatable rotating drum at the end of the chain plate conveyor, so that the chips can fall into the inside of the rotating drum, and in the rotation process of the rotating drum, the chips are rapidly separated from the cutting fluid by the centrifugal force, the cutting fluid is guided into the liquid guide pipe through the liquid guiding gap between the rotating drum and the fixed shell, and finally flows back to the machining center, realizing efficient recovery of the cutting fluid, avoiding mixing of too much cutting fluid in the discharged chips, thereby improving the utilization rate of the cutting fluid and reducing the subsequent processing burden.

[0023] The present application realizes the above-mentioned separation effect through the rotating drum, and at the same time, the crushing gap formed between the rotating drum and the crushing seat is used to crush the chips falling into the inside of the rotating drum in the rotation process of the rotating drum, so as to crush the chips into relatively uniform particles, the volume of the crushed chips is obviously reduced, which is convenient for subsequent centralized stacking and storage management, can effectively reduce the occupied space, and improves the transportation and processing convenience of the chips.

[0024] The present application adopts the double-spiral conveying mechanism to preliminarily crush and cut the chips, so that the long strip-shaped chips are cut into appropriate lengths, thereby avoiding the winding problem in the conveying process, and the double-spiral conveying mechanism is also used for pre-crushing the chips, so that the volume of the chips is reduced, avoiding that the too large chips directly enter the subsequent crushing area and cause the crushing effect to be reduced, and effectively improving the crushing effect and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective view of the embodiment one of the present application;

[0026] Figure 2 It is a structural schematic view of the tail area of the chip removal device.

[0027] Figure 3 This is a structural diagram of the rotating drum of the present invention;

[0028] Figure 4 This is a partial structural diagram of Embodiment 2 of the present invention;

[0029] Figure 5 This is a cross-sectional view of Embodiment 2 of the present invention.

[0030] in:

[0031] 1. Base; 2. Chain conveyor; 201. Baffle; 202. Cover plate; 203. Frame; 3. Support feet; 4. Connecting frame; 5. Centrifugal motor; 6. Drive wheel; 7. Liquid guide pipe; 8. Crushing gap; 9. Locking bolt; 10. Spring; 11. Crushing seat; 12. Rotary drum; 1201. Mesh; 1202. Rib; 13. Liquid passage gap; 14. Fixed housing; 1401. Retaining ring; 1402. Chip discharge port; 15. Gear ring; 16. First gear; 17. Second gear; 18. Worm; 1801. Meshing teeth; 19. Worm wheel; 20. Spiral blade; 21. Main shaft. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] like Figures 1-3 As shown, a centrifugal crushing and chip removal device for a CNC machining center includes a base 1, a chain conveyor 2, a fixed housing 14, a rotating drum 12, a crushing seat 11, etc.

[0035] The base 1 is a shell structure with an open top, used for installation inside the CNC machining center, and serves as the mounting base for the chain conveyor 2.

[0036] The chain plate conveyor 2 is arranged in a Z shape, the Z shape has a chip inlet end arranged horizontally at a low point, a lifting area arranged in an inclined structure, and a chip outlet end arranged horizontally at a high point, the chain plate conveyor 2 comprises a rack 203 fixedly connected with the base 1, the rack 203 serves as a main rack body of the chain plate conveyor 2, a rotating shaft is mounted on the rack 203, a conveying chain plate is mounted on the rotating shaft, and a conveying motor is also mounted on the rack 203, which is used to realize the operation of the whole chain plate conveyor 2, the driving structure and principle thereof belong to the conventional setting in the prior art, and will not be described in detail here. In addition, in order to prevent the chips from falling during lifting and to achieve an aesthetic effect, a cover plate 202 is mounted on the rack 203 of the lifting area to cover the lifting area of the chain plate conveyor 2; in order to realize effective lifting, a baffle 201 is also mounted on the conveying chain plate, so that the chips can be smoothly lifted. In order to ensure the balance of the overall center of gravity, a supporting leg 3 is mounted on the lifting area of the rack 203.

[0037] The fixed shell 14 is mounted at the tail end position of the rack 203 of the chain plate conveyor 2, and is connected with the rack 203 in a bolted manner, and mainly serves as a mounting base for the inner rotating drum 12 and the crushing seat 11. In order to achieve an aesthetic effect and facilitate the downward flow of cutting fluid along the inner wall thereof, the fixed shell 14 is designed in a tapered structure with a wide upper part and a narrow lower part.

[0038] The rotating drum 12 is rotatably arranged in the fixed shell 14, the circumferential side wall of the rotating drum 12 is provided with mesh holes 1201 for discharging cutting fluid at a position close to the upper part, and a rib 1202 protruding radially inward is arranged at the lower area of the inner wall of the rotating drum 12. The mesh holes 1201 are designed on the rotating drum 12 to realize effective separation of chips and cutting fluid by centrifugal force, and the rib 1202 is arranged to facilitate the crushing of chips after the solid-liquid separation is completed. The separation and crushing effects are realized by a single rotating drum 12, which simplifies the structure. In addition, in order to further improve the crushing efficiency and effect, the rib 1202 is designed in an inclined structure at the position of the inner wall of the rotating drum 12, and a rib structure is also arranged on the outer wall of the crushing seat 11, for example, an inclined or spiral rib structure, which can improve the shearing and crushing effect.

[0039] The crushing seat 11 is mounted in the rotating drum 12 and forms an annular crushing gap 8 with the inner wall of the rotating drum 12. The chips guided by the chain plate conveyor 2 fall into the rotating drum 12, and the rotating drum 12 applies a centrifugal force to the chips during rotation to separate the chips from the cutting fluid; then the chips move downward under the action of their own gravity and are crushed by the rib 1202 of the inner wall of the rotating drum 12 cooperating with the crushing seat 11 during the falling process, and finally are discharged from the rotating drum 12.

[0040] The upper end of the crushing seat 11 is in inverted V shape or upward convex hemispherical structure (in this case, upward convex hemispherical structure), and the crushing seat 11 is located directly below the discharge end of the chain plate conveyor 2, so that the cuttings falling from the chain plate conveyor 2 can fall on the crushing seat 11, mainly to enable the cuttings to move in the peripheral direction of the crushing seat 11 after falling, thereby avoiding the problem of accumulation.

[0041] The outer wall of the crushing seat 11 below is in tapered structure with the width increasing from top to bottom, the inner cavity of the rotating drum 12 is in tapered structure with the width increasing from top to bottom, and the taper of the inner wall of the rotating drum 12 is greater than that of the outer wall of the crushing seat 11, so that the radial size of the crushing gap 8 formed between the rotating drum 12 and the crushing seat 11 decreases from top to bottom, and the crushing path is gradually tightened, thereby improving the crushing efficiency. That is, the cuttings continuously enter smaller gap areas during downward movement, and are subjected to gradually enhanced extrusion, shearing and grinding, thereby achieving the purpose of gradual crushing, and the crushing effect is more sufficient, and finally more fine and uniform crushed particles can be obtained.

[0042] The crushing seat 11 is connected with the fixed shell 14 through locking bolts 9, the number of the locking bolts 9 is at least two, and springs 10 are sleeved outside the locking bolts 9, one end of the spring 10 abuts against the inner side end face of the head of the locking bolt 9, and the other end abuts against the outer wall of the fixed shell 14. By sleeving the spring 10 outside the locking bolt 9, an elastic connection structure with pre-tightening force is formed between the crushing seat 11 and the fixed shell 14, so that the spring 10 can absorb and buffer the impact force and vibration during the crushing process, thereby avoiding damage of the crushing seat 11 and the fixed shell 14 due to hard collision, improving the durability of the parts; and the elastic connection structure can automatically adjust the crushing gap 8 in a small amount according to the stress condition, so that the crushing process is more stable, and the problem of jamming is avoided.

[0043] The rotating drum 12 is installed inside the fixed shell 14 through a bearing, and a gear ring 15 is fixed in the circumferential direction of the upper end of the rotating drum 12, a support leg 3 extending downward is fixed on the rack 203, a connecting frame 4 is fixed between the support leg 3 and the fixed shell 14, a centrifugal motor 5 is fixed on the connecting frame 4, a driving wheel 6 is installed at the shaft end of the centrifugal motor 5, and the driving wheel 6 is engaged with the gear ring 15, for driving the rotating drum 12 to rotate.

[0044] The rotary drum 12 and the fixed shell 14 are provided with an annular liquid passage gap 13 for collecting cutting fluid separated from the cutting chips, the fixed shell 14 is provided with an upwardly extending baffle ring 1401 at the lower portion, and the fixed shell 14 is provided with a liquid guide pipe 7 at the bottom, and the other end of the liquid guide pipe 7 extends into the numerical control machining center. Since the fixed shell 14 is in a tapered structure with a wide upper portion and a narrow lower portion, the cutting fluid always flows downward along the inner wall of the fixed shell 14 when flowing downward, so that the cutting fluid can be prevented from flowing directly out of the chip discharge port 1402. The baffle ring 1401 is mainly used to block the flow of cutting fluid in the direction of the chip discharge port 1402. In actual use, the baffle ring 1401 with different heights can be designed according to the requirements.

[0045] The bottom of the fixed shell 14 and the area inside the baffle ring 1401 are provided with a plurality of chip discharge ports 1402 uniformly distributed around the center of the fixed shell 14, wherein the chip discharge ports 1402 are mainly located below the crushing gap 8, so that the crushed cutting chips can directly fall downward through the chip discharge ports 1402. In actual use, a cutting chip collection vehicle is placed below the chip discharge ports 1402.

[0046] Embodiment two,

[0047] As shown in Figures 4-5 The embodiment is based on the above-mentioned embodiment one, and a double-spiral conveying mechanism is arranged on the base 1 and above the feeding end of the chain plate conveyor 2. The double-spiral conveying mechanism includes two main shafts 21 that rotate synchronously and in opposite directions. The main shafts 21 are installed on the base 1 and the cover plate 202 of the chain plate conveyor 2 through bearings, and the circumferential direction of the main shafts 21 is fixed with spiral blades 20. The center distance of the two main shafts 21 is less than the outer diameter of the spiral blades 20, so that the outer edge of any spiral blade 20 can enter the inside envelope area of the spiral blade 20 of the adjacent main shaft 21, thereby forming an interlaced meshing structure between the two spiral blades 20 during rotation.

[0048] By arranging the double-spiral conveying mechanism above the feeding end of the chain plate conveyor 2 and making the two main shafts 21 rotate synchronously and in opposite directions, and forming an interlaced meshing structure between the spiral blades 20, the cutting chips first pass through the double-spiral conveying mechanism for extrusion and preliminary crushing before entering the chain plate conveyor, which can divide the long cutting chips into shorter sizes, significantly reduce the risk of entanglement, and reduce the damage probability of the chain plate conveyor 2. In addition, the interlaced area of the double-spiral blades 20 has a certain cutting and crushing effect on the cutting chips, providing a more reliable and suitable initial cutting chip size basis for the subsequent crushing process, thereby improving the overall crushing quality of the system.

[0049] The power device for driving the double helix conveying mechanism to rotate is also included. In this example, the power device includes a first gear 16 mounted on the rotating shaft of the chain conveyor 2, a rotatable worm 18 is mounted inside the base 1, the worm 18 is parallel to the rotating shaft axis, the worm 18 is provided with a second gear 17 engaged with the first gear 16, and the worm 18 has two meshing tooth portions 1801 with opposite rotation directions, and the two meshing tooth portions 1801 are respectively engaged with the worm gears 19 on the two main shafts 21.

[0050] The power device has a compact structure, can directly use the power source of the chain conveyor 2, avoids adding an additional driving motor, and reduces the system complexity and cost. Meanwhile, the worm 18 has two meshing tooth portions 1801 with opposite rotation directions, which can be respectively engaged with the worm gears 19 on the two main shafts 21, so as to ensure that the two main shafts 21 are synchronously and reversely rotated under the driving of the worm 18, and improve the transmission consistency and stability.

[0051] In work, the cutting chips generated in the machining process first enter the double helix conveying mechanism, the cutting chips are first preliminarily crushed under the extrusion and shearing action of the two helical blades 20, the long cutting chips are cut into appropriate lengths, and the winding risk in subsequent conveying is reduced. Then, the cutting chips enter the chain conveyor 2 and are lifted to the position of the rotating drum 12, under the high-speed rotation of the rotating drum 12, the cutting chips and the cutting fluid are rapidly separated by centrifugal action, the cutting fluid flows back to the machining center along the inner wall of the fixed shell 14 through the liquid guide pipe 7, and the cutting chips fall along the inner cavity of the rotating drum 12, and are gradually extruded, sheared and ground through the crushing gap 8 in the falling process, so as to realize uniform crushing, and finally, the crushed cutting chips are concentratedly discharged through the chip discharge port 1402, and the whole process of efficient conveying, separation and crushing of the cutting chips is completed.

[0052] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A centrifugal crushing and chip removal device for a CNC machining center, characterized in that, include: Base (1); The chain plate conveyor (2) is arranged in a Z-shape. The chain plate conveyor (2) includes a frame (203) that is fixedly connected to the base (1). A fixed housing (14) is installed at the tail end of the frame (203) of the chain conveyor (2); The rotating drum (12) is rotatably disposed inside the fixed housing (14). The circumferential sidewall of the rotating drum (12) is provided with a mesh (1201) for discharging cutting fluid near the upper part, and a radially protruding rib (1202) is provided in the lower part of the inner wall of the rotating drum (12). The crushing seat (11) is installed inside the rotating drum (12) and forms an annular crushing gap (8) with the inner wall of the rotating drum (12). The upper end of the crushing seat (11) is an inverted V-shaped or upwardly convex hemispherical structure. The crushing seat (11) is located directly below the discharge end of the chain conveyor (2). The chips falling from the chain conveyor (2) can fall on the crushing seat (11). The lower outer wall of the crushing seat (11) is a tapered structure that is wider at the top and narrower at the bottom. The inner cavity of the rotating drum (12) is a tapered structure that is wider at the top and narrower at the bottom. The inner wall taper of the rotating drum (12) is greater than the outer wall taper of the crushing seat (11), so that the radial dimension of the crushing gap (8) formed between the rotating drum (12) and the crushing seat (11) decreases from top to bottom. An annular fluid passage (13) is provided between the rotating drum (12) and the fixed housing (14), the fluid passage (13) is used to collect the cutting fluid separated from the chips, a retaining ring (1401) extending upward is provided below the fixed housing (14), a fluid guide pipe (7) is installed at the bottom of the fixed housing (14), the other end of the fluid guide pipe (7) extends into the CNC machining center; a number of chip discharge ports (1402) are evenly distributed around the center of the fixed housing (14) in the area at the bottom of the fixed housing (14) and inside the retaining ring (1401); the base ( 1) A double helical conveying mechanism is provided above the feed end of the chain plate conveyor (2). The double bolt conveying mechanism includes two main shafts (21) that rotate synchronously and in opposite directions. Helical blades (20) are fixed in the circumferential direction of the main shafts (21). The center distance between the two main shafts (21) is smaller than the outer diameter of the helical blades (20), so that the outer edge of any helical blade (20) can enter the inner envelope area of ​​the helical blades (20) of the adjacent main shaft (21), thereby forming an interlocking meshing structure between the two helical blades (20) during rotation. Among them, the chips delivered by the chain conveyor (2) fall into the drum (12). During the rotation of the drum (12), centrifugal force is applied to the chips, so that the chips are separated from the cutting fluid. Then the chips move downward under their own gravity, and during the falling process, the ribs (1202) on the inner wall of the drum (12) cooperate with the crushing seat (11) to crush the chips, and finally discharge them from the drum (12).

2. The centrifugal crushing and chip removal device for a CNC machining center according to claim 1, characterized in that, The crushing seat (11) is connected to the fixed housing (14) by locking bolts (9). There are at least two locking bolts (9). A spring (10) is sleeved on the outside of the locking bolt (9). One end of the spring (10) abuts against the inner end face of the head of the locking bolt (9), and the other end abuts against the outer wall of the fixed housing (14).

3. The centrifugal crushing and chip removal device for a CNC machining center according to claim 1, characterized in that, The rotating drum (12) is mounted inside the fixed housing (14) via bearings, and a gear ring (15) is fixed in the circumferential direction at the upper end of the rotating drum (12). A downwardly extending support foot (3) is fixed on the frame (203), and a connecting frame (4) is fixed between the support foot (3) and the fixed housing (14). A centrifugal motor (5) is fixed on the connecting frame (4), and a drive wheel (6) is installed on the shaft end of the centrifugal motor (5). The drive wheel (6) meshes with the gear ring (15) to drive the rotating drum (12) to rotate.

4. The centrifugal crushing and chip removal device for a CNC machining center according to claim 1, characterized in that, It also includes a power unit for driving the twin-helix conveyor mechanism to rotate.

5. A centrifugal crushing and chip removal device for a CNC machining center according to claim 4, characterized in that, The power unit includes a first gear (16) mounted on the shaft of the chain conveyor (2), a rotatable worm (18) mounted inside the base (1), the worm (18) being parallel to the shaft axis, a second gear (17) meshing with the first gear (16) mounted on the worm (18), and two meshing teeth (1801) with opposite directions of rotation on the worm (18), which mesh with worm wheels (19) on the two main shafts (21) respectively.

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