A cutting device for machining a crankshaft

Abstract

The utility model relates to a kind of cutting device for crankshaft machining in the field of crankshaft machining, including rack, clamp and cutting tool being installed on rack, collection groove being opened in the surface of rack, scraper being slidably arranged in collection groove and being used to clean collection groove, drop waste mouth being opened in one side of the bottom of collection groove, collection hopper being fixed in the bottom of rack and opening corresponding with drop waste mouth and driving mechanism for driving scraper movement;Rack is opened with installation cavity and blow hole, installation cavity is located in the side of drop waste mouth away from scraper, blow hole penetrates drop waste mouth side wall and is communicated with installation cavity;Deformable air bag is fixed in installation cavity, the free end side of air bag is fixed with extrusion plate, trigger slide block for extruding extrusion plate is also fixed in installation cavity, using the above structure, ensure the neatness of scraper after each cleaning, to improve cleaning effect, and reduce the wear of scraping strip, prolong the service life of scraper.

Description

Technical Field

[0001] This utility model relates to a cutting device for crankshaft machining, and more particularly to a cutting device for crankshaft machining applied in the field of crankshaft machining. Background Technology

[0002] Lathes are mainly used for machining shafts, discs, sleeves and other workpieces with rotating surfaces. They are the most widely used type of machine tool in machinery manufacturing and repair plants.

[0003] A search revealed that patent publication number CN218425659U discloses a turning device for machining crankshafts, including a support structure. The support structure comprises an operating table, a connecting plate, and a fixing plate. The fixing plate is fixed on the operating table, and a clamping structure is fixed on the fixing plate. A connecting plate is fixed between the fixing plates, and a cutting structure is fixed on the connecting plate. A scraping mechanism, including a scraper structure, is fixed inside the operating table. A collecting structure is fixed at the bottom of the operating table. This turning device for machining crankshafts automatically removes metal wires falling from the operating table by setting a scraping mechanism inside the operating table below the cutting structure and using a servo motor to drive the scraper structure. Even during turning operations, it can effectively remove metal wires from the operating table, improving the efficiency of crankshaft turning and thus increasing crankshaft production efficiency. It also saves time spent manually cleaning metal wires, reduces labor costs, and facilitates the use of the turning device when machining crankshafts.

[0004] Based on the above search and combined with the existing technology, although the cutting devices for crankshaft machining disclosed above have achieved the removal and collection of metal wires (including processing debris), they still have certain drawbacks. For example, the existing technology uses scrapers for cleaning, but it is difficult to ensure that metal wires are not attached to the scrapers. If metal wires are attached to the scrapers, it will affect the cleaning effect and may accelerate the damage of the scraper blades, affecting their service life. Therefore, a cutting device for crankshaft machining is proposed to improve the above problems. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is how to design a cutting device for crankshaft machining that is more effective in cleaning and can keep the scraper clean while cleaning metal wires.

[0006] To solve the above problems, this utility model provides a cutting device for crankshaft machining, including a frame, a fixture and a cutting tool mounted on the frame, a collection groove opened on the surface of the frame, a scraper slidably disposed in the collection groove and used for cleaning the collection groove, a waste outlet opened on one side of the bottom of the collection groove, a collection hopper fixed to the bottom of the frame and whose opening corresponds to the waste outlet, and a drive mechanism for driving the scraper to move.

[0007] The frame is provided with an installation cavity and a blow hole. The installation cavity is located on the side of the waste outlet away from the scraper, and the blow hole penetrates the side wall of the waste outlet and communicates with the installation cavity.

[0008] A deformable airbag is fixed inside the mounting cavity. A compression plate is fixed to one side of the free end of the airbag. A trigger slider for squeezing the compression plate is also fixed inside the mounting cavity. The trigger slider is driven by the drive mechanism.

[0009] In the aforementioned cutting device for crankshaft machining, when the trigger slider is in the initial position, the air inlet of the airbag is opened. When the trigger slider is driven by the drive mechanism, it squeezes the extrusion plate, compressing the air inside the airbag. When the scraper moves above the waste outlet, the air outlet of the airbag is opened, allowing the compressed gas to be ejected from the blowhole onto the scraper. This airflow can be used to clean the metal wires attached to the scraper, causing the metal wires to be blown away and eventually fall into the waste outlet. After each cleaning, the scraper is kept clean, thereby improving the cleaning effect, reducing scraper wear, and extending the scraper's service life.

[0010] As a further improvement of this application, a U-shaped air inlet sealing plate is slidably installed on one side of the airbag inlet in the mounting cavity. When one side of the air inlet sealing plate abuts against the side wall of the trigger slider, it moves away from the trigger slider and opens the airbag inlet. When the air inlet sealing plate separates from the trigger slider, it closes the airbag inlet.

[0011] An air outlet sealing plate is slidably installed on the inner wall of the installation cavity near the blow hole. A pressure support plate is integrally formed on the side of the air outlet sealing plate away from the air inlet sealing plate. An upper pressure wedge is fixed at the upper end of the trigger slider for pressing down the pressure support plate. When the upper pressure wedge presses down the pressure support plate, the blow hole is connected to the air outlet of the airbag.

[0012] The upper end of the air outlet sealing plate and the side of the airbag away from the trigger slider are elastically connected to the inner wall of the mounting cavity through a return spring. The air inlet sealing plate slides left and right, and the air outlet sealing plate slides up and down.

[0013] As a further improvement of this application, guide pressure walls are provided on both the front and rear sides of the trigger slider. The guide pressure wall on the front side of the trigger slider is used to press the extrusion plate to move towards the blow hole side, and the guide pressure wall on the rear side of the trigger slider is used to press the air inlet sealing plate to move towards the blow hole side.

[0014] An inclined sidewall is formed on the front side of the upper wedge block, which is used to compress the pressure plate to move downward.

[0015] As a further improvement of this application, multiple blow holes are provided and evenly distributed in an array along the side wall of the waste outlet. All blow holes are inclined downwards, and the extension axis of the blow holes coincides with the side of the scraper located above the waste outlet.

[0016] As a further improvement of this application, the drive mechanism includes a drive motor, a transmission gear, a reciprocating screw, and a driven gear. The drive motor is fixed to the back side of the frame by a bracket. The transmission gear is fixedly sleeved on the output shaft of the drive motor. The transmission gear meshes with the driven gear. The driven gear is fixedly sleeved on one end of the reciprocating screw. The reciprocating screw rotates through the side wall of the frame and extends to the front side of the mounting cavity. The reciprocating screw thread passes through the trigger slider and drives the trigger slider to move back and forth.

[0017] As a further improvement of this application, a first annular guide groove is provided on the rear side of the collection tank. The first annular guide groove is an annular groove, and a support rod with one end extending into the first annular guide groove is fixedly inserted on the scraper.

[0018] The drive mechanism also includes sprockets and chains. Multiple sprockets are provided and are located at the four corners of the first ring guide groove. All sprockets are rotatably connected to the frame through shafts, and one of the sprocket shafts is fixed to the output shaft of the drive motor.

[0019] The chain loop is mounted on multiple sprockets and drives and connects multiple sprockets. A fixing hoop is fixed on the chain and rotates and is sleeved on the end of the support rod.

[0020] As a further improvement of this application, a second annular guide groove is provided on the front side of the collection tank. The second annular guide groove is a rectangular groove. A square slider is fixed at the end of the support rod away from the first annular guide groove. The square slider is slidably embedded in the second annular guide groove and is in clearance fit with the second annular guide groove. The square slider is a cuboid with rounded corners on all four sides. The rounded corners of the square slider correspond to the edge positions of the second annular guide groove.

[0021] As a further improvement of this application, a flexible sealing plate is movably embedded in both the first ring guide groove and the second ring guide groove. A plurality of sliding hanging rods are fixed on the outside of the flexible sealing plate embedded in the first ring guide groove, which are distributed in a ring along the edge of the flexible sealing plate. The sliding hanging rods are slidably embedded in the peripheral side wall of the first ring guide groove, and the inner side of the flexible sealing plate is fixed to the side wall of the chain.

[0022] Multiple sliding rods are fixed on both the inner and outer sides of the flexible sealing plate embedded in the second annular guide groove. The multiple sliding rods are respectively slidably embedded in the inner and outer sidewalls of the second annular guide groove.

[0023] Both flexible sealing plates have through holes for the support rod to pass through.

[0024] In summary, when the trigger slider continues to slide and moves to the side of the pressure support plate, the upper wedge presses against the pressure support plate, causing the pressure support plate to drive the air outlet sealing plate to overcome the elastic force of the return spring and drop down, thereby connecting the blow hole with the air outlet of the airbag to achieve the purpose of spraying air to clean the scraper. After each cleaning, the scraper is kept clean, thereby improving the cleaning effect, reducing the wear of the scraper blade, and extending the service life of the scraper. Attached Figure Description

[0025] Figure 1 This is a first-view perspective three-dimensional structural diagram of the first embodiment of this application;

[0026] Figure 2 This is a second-view perspective three-dimensional structural diagram of the first embodiment of this application;

[0027] Figure 3 This is a front sectional view of the first embodiment of this application;

[0028] Figure 4 for Figure 3 Enlarged view of the structure at point B in the middle;

[0029] Figure 5 This is a partial top sectional view of the first embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the rear partial structure of the first embodiment of this application;

[0031] Figure 7 for Figure 3 Enlarged view of the structure at point A in the middle;

[0032] Figure 8 This is a partial structural diagram of the rear cross-section of the second embodiment of this application;

[0033] Figure 9 This is a partial structural diagram of the flexible sealing plate embedded in the first annular guide groove according to the second embodiment of this application.

[0034] Explanation of the labels in the diagram:

[0035] 1. Frame; 11. Fixture; 12. Cutting tool; 13. Collection trough; 14. Waste outlet; 15. Blowing hole; 16. First ring guide groove; 17. Second ring guide groove; 18. Mounting cavity; 19. Flexible sealing plate; 191. Perforation; 192. Sliding hanging rod; 2. Scraper; 21. Support rod; 22. Square slider; 3. Collection hopper; 4. Drive mechanism; 41. Drive motor; 42. Sprocket; 43. Chain; 44. Transmission gear; 45. Reciprocating screw; 46. Driven gear; 5. Trigger slider; 51. Upper pressure wedge; 52. Guide pressure wall; 6. Airbag; 61. Air inlet sealing plate; 7. Extrusion plate; 8. Air outlet sealing plate; 81. Pressure support plate; 9. Return spring. Detailed Implementation

[0036] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0037] Implementation method 1:

[0038] Figures 1-6The present invention illustrates a cutting device for crankshaft machining, comprising a frame 1, a clamp 11 and a cutting tool 12 mounted on the frame 1, a collection groove 13 formed on the surface of the frame 1, a scraper 2 slidably disposed in the collection groove 13 for cleaning the collection groove 13, a waste outlet 14 formed on one side of the bottom of the collection groove 13, a collection hopper 3 fixed to the bottom of the frame 1 and having an opening corresponding to the waste outlet 14, and a drive mechanism 4 for driving the scraper 2 to move.

[0039] The frame 1 is provided with an installation cavity 18 and a blow hole 15. The installation cavity 18 is located on the side of the waste outlet 14 away from the scraper 2. The blow hole 15 penetrates the side wall of the waste outlet 14 and communicates with the installation cavity 18.

[0040] A deformable airbag 6 is fixed inside the mounting cavity 18, and the free end of the airbag 6 (e.g. Figure 4 As shown, a compression plate 7 is fixed on one side of the free end (the end of the airbag 6 away from the blow hole 15), and a trigger slider 5 for squeezing the compression plate 7 is also fixed in the mounting cavity 18. The trigger slider 5 is driven by the driving mechanism 4.

[0041] Based on the above structure, when the trigger slider 5 is in the initial position, the air inlet of the airbag 6 is opened. When the trigger slider 5 is driven by the drive mechanism 4, it squeezes the extrusion plate 7, which compresses the air in the airbag 6. When the scraper 2 moves above the waste outlet 14, the air outlet of the airbag 6 is opened, so that the compressed gas is sprayed out from the blow hole 15 onto the scraper 2. In this way, the airflow can be used to clean the metal wires attached to the scraper 2, so that the metal wires are blown away and finally fall into the waste outlet 14. After each cleaning, the scraper 2 is kept clean, thereby improving the cleaning effect, reducing the wear of the scraper blade, and extending the service life of the scraper 2.

[0042] Furthermore, a U-shaped air inlet sealing plate 61 is slidably installed on one side of the air inlet of the airbag 6 in the mounting cavity 18;

[0043] An air outlet sealing plate 8 is slidably installed on the inner wall of the mounting cavity 18 near the blow hole 15. A pressure support plate 81 is integrally formed on the side of the air outlet sealing plate 8 away from the air inlet sealing plate 61. An upper pressure wedge 51 for pressing down the pressure support plate 81 is fixed at the upper end of the trigger slider 5.

[0044] Among them, the upper end of the air outlet sealing plate 8 and the side of the airbag 6 away from the trigger slider 5 are elastically connected to the inner wall of the mounting cavity 18 through the return spring 9 (the return spring 9 adopts the tension spring or compression spring commonly used in the prior art, so as to drive the air inlet sealing plate 61 and the air outlet sealing plate 8 as best) and the air inlet sealing plate 61 slides left and right, and the air outlet sealing plate 8 slides up and down.

[0045] The trigger slider 5 has guide pressure walls 52 on both the front and rear sides. The guide pressure wall 52 on the front side of the trigger slider 5 is used to press the extrusion plate 7 to move towards the blow hole 15. The guide pressure wall 52 on the rear side of the trigger slider 5 is used to press the air inlet sealing plate 61 to move towards the blow hole 15.

[0046] An inclined sidewall is formed on the front side of the upper wedge block 51, which is used to compress the pressure support plate 81 to move downward.

[0047] When the trigger slider 5 is in the initial position, one side of the air inlet sealing plate 61 abuts against the side wall of the trigger slider 5. At this time, the air inlet sealing plate 61 separates from the air inlet of the airbag 6, causing the air inlet of the airbag 6 to open. Alternatively, when the trigger slider 5 is reset, the rear guide pressure wall 52 of the trigger slider 5 presses the air inlet sealing plate 61 towards the blow hole 15, thereby causing the air inlet sealing plate 61 to slide against the elastic force of the return spring 9, thus causing the air inlet of the airbag 6 to open. When the trigger slider 5 slides and leaves the initial position, the air inlet sealing plate 61, after separating from the trigger slider 5, moves away from the blow hole 15 under the action of the return spring 9 and closes the air inlet of the airbag 6.

[0048] When the trigger slider 5 slides and leaves the initial position, the front guide pressure wall 52 of the trigger slider 5 presses the extrusion plate 7 to move toward the blow hole 15, thereby compressing the airbag 6 and increasing the air pressure inside the airbag 6.

[0049] When the trigger slider 5 continues to slide and moves to the side of the pressure support plate 81, the upper pressure wedge 51 presses against the pressure support plate 81, causing the pressure support plate 81 to drive the air outlet sealing plate 8 to overcome the elastic force of the return spring 9 and drop down, thereby making the blow hole 15 connected to the air outlet of the airbag 6 (at this time, the scraper 2 moves to the top of the waste outlet 14 under the drive of the drive mechanism 4), achieving the purpose of spraying air to clean the scraper 2; when the trigger slider 5 is reset, the upper pressure wedge 51 separates from the pressure support plate 81, thereby causing the pressure support plate 81 to reset under the action of the return spring 9 and block the air outlet of the airbag 6.

[0050] Furthermore, multiple blow holes 15 are provided and evenly distributed along the side wall of the waste outlet 14. All blow holes 15 are inclined downwards, and the extension axis of the blow holes 15 coincides with the side of the scraper 2 above the waste outlet 14.

[0051] Setting multiple blow holes 15 downwards can effectively guide the blown metal wires down into the waste outlet 14, thereby reducing the probability of the metal wires being blown up, ensuring the effectiveness of a single cleaning, and reducing the probability of repeated work (repeatedly cleaning the blown-up metal wires).

[0052] Furthermore, the drive mechanism 4 includes a drive motor 41, a transmission gear 44, a reciprocating screw 45, and a driven gear 46. The drive motor 41 is fixed to the back side of the frame 1 by a bracket. The transmission gear 44 is fixedly sleeved on the output shaft of the drive motor 41. The transmission gear 44 meshes with the driven gear 46. The driven gear 46 is fixedly sleeved on one end of the reciprocating screw 45. The reciprocating screw 45 rotates through the side wall of the frame 1 and extends to the front side of the mounting cavity 18. The reciprocating screw 45 is threaded through the trigger slider 5 and drives the trigger slider 5 to move back and forth.

[0053] After the drive motor 41 starts, it drives the transmission gear 44 to drive the transmission, and drives the reciprocating screw 45 to rotate through the driven gear 46. When the reciprocating screw 45 rotates, it can drive the trigger slider 5 (along the front and back direction of the frame 1) to move back and forth horizontally.

[0054] The second implementation method:

[0055] Figures 7-9 This invention illustrates a cutting device for crankshaft machining, which is based on Embodiment 1, but differs from Embodiment 1 in that:

[0056] A first annular guide groove 16 is provided on the rear side of the collection tank 13. The first annular guide groove 16 is an annular groove. A support rod 21 with one end extending into the first annular guide groove 16 is fixedly inserted on the scraper 2.

[0057] The drive mechanism 4 also includes sprockets 42 and chains 43. Multiple sprockets 42 are provided and are located at the four corners of the first ring guide groove 16. Multiple sprockets 42 are rotatably connected to the frame 1 through rotating shafts. One of the sprockets 42 rotating shafts is fixed to the output shaft of the drive motor 41.

[0058] The chain 43 is looped around multiple sprockets 42 and drives and connects multiple sprockets 42. A fixing hoop is fixed on the chain 43 and rotatedly sleeved on the end of the support rod 21.

[0059] In addition, a second annular guide groove 17 is provided on the front side of the collection tank 13. The second annular guide groove 17 is a rectangular groove. A square slider 22 is fixed at the end of the support rod 21 away from the first annular guide groove 16. The square slider 22 is slidably embedded in the second annular guide groove 17 and is in clearance fit with the second annular guide groove 17. The square slider 22 is a cuboid with rounded corners on all four sides. The rounded corners of the square slider 22 correspond to the edge positions of the second annular guide groove 17.

[0060] By setting the first ring guide groove 16 and the second ring guide groove 17, and changing the existing screw drive structure to a sprocket 42 and chain 43 drive structure, the support rod 21 (including scraper 2) can be driven to move in a ring. When the scraper 2 moves towards the waste outlet 14, its bottom contacts the bottom of the collection tank 13, achieving a cleaning effect. When it moves away from the waste outlet 14, it is lifted to avoid pushing the metal wire that falls during cleaning in the opposite direction, thereby achieving a more thorough cleaning effect and further improving cleaning efficiency.

[0061] Specifically, after the drive motor 41 starts, it drives one of the sprockets 42 to rotate through the output shaft. The rotation of the sprocket 42 drives the chain 43 to rotate. The chain 43 rotates in a ring along the first ring guide groove 16 under the support of multiple sprockets 42, thereby driving the support rod 21 connected to it to rotate in a ring, and finally achieving the purpose of driving the scraper 2 to rotate back and forth in a cycle.

[0062] When the support rod 21 moves, it can also drive the square slider 22 to slide along the second ring guide groove 17, so that the support rod 21 can always maintain a fixed posture during the rotation, thereby ensuring that the scraper 2 is always vertically downward during the rotation, and preventing the scraper 2 from flipping over during the rotation and losing its cleaning effect.

[0063] Furthermore, flexible sealing plates 19 are movably embedded in both the first annular guide groove 16 and the second annular guide groove 17. The flexible sealing plates 19 are made of flexible materials commonly used in the prior art and applicable to this embodiment (such as rubber, flexible fabric, etc.). They have certain deformation properties and can undergo self-adaptive deformation when encountering the corner of the first annular guide groove 16 or the second annular guide groove 17. Multiple sliding hanging rods 192 are fixed on the outside of the flexible sealing plate 19 embedded in the first annular guide groove 16, which are distributed in a ring along the edge of the flexible sealing plate 19. The sliding hanging rods 192 are slidably embedded in the peripheral side wall of the first annular guide groove 16, and the inner side of the flexible sealing plate 19 is fixed to the side wall of the chain 43.

[0064] Multiple sliding rods 192 are fixed on both the inner and outer sides of the flexible sealing plate 19 embedded in the second ring guide groove 17. These sliding rods 192 are distributed in a ring along the edge of the flexible sealing plate 19. The multiple sliding rods 192 are respectively slidably embedded in the inner and outer peripheral walls of the second ring guide groove 17 (not shown in the figure, but it can be understood that the inner and outer peripheral walls of the second ring guide groove 17 and the outer peripheral wall of the first ring guide groove 16 are provided with grooves for the sliding rods 192 to slide. These grooves are also covered by the flexible sealing plate 19. Here, the peripheral walls are the upper and lower, left and right side walls). The aforementioned self-adaptive deformation is mainly caused by the sliding rods 192 pulling to generate deformation.

[0065] Both flexible sealing plates 19 are provided with through holes 191 for the support rod 21 to pass through.

[0066] By setting the flexible sealing plate 19, the flexible sealing plate 19 can block the first annular guide groove 16 and the second annular guide groove 17, thereby preventing the metal wire generated during the cutting of the crankshaft from entering the first annular guide groove 16 or the second annular guide groove 17, and preventing obstruction or jamming of the movement of the sprocket 42, chain 43, support rod 21 and square slider 22, ensuring the smooth operation of the device; at the same time, it can rotate with the rotation of the support rod 21 and the chain 43, thereby achieving the sealing effect while meeting the annular movement requirements of the support rod 21.

[0067] It should be further noted that the technical features of the drive motor, reciprocating lead screw, fixture, cutting tool, sprocket, chain, etc. involved in this utility model patent application should be regarded as prior art. The specific structure, working principle (including the working principle of using the cutting device to process the crankshaft) of these technical features, as well as the control method and spatial arrangement method that may be involved, can adopt conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0068] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A cutting device for crankshaft machining, comprising a frame (1), a clamp (11) mounted on the frame (1) and a cutting tool (12), a collection groove (13) formed on the surface of the frame (1), a scraper (2) slidably disposed in the collection groove (13) for cleaning the collection groove (13), a waste outlet (14) formed on one side of the bottom of the collection groove (13), a collection hopper (3) fixed to the bottom of the frame (1) and whose opening corresponds to the waste outlet (14), and a drive mechanism (4) for driving the scraper (2) to move, characterized in that: The frame (1) is provided with an installation cavity (18) and a blow hole (15). The installation cavity (18) is located on the side of the waste outlet (14) away from the scraper (2). The blow hole (15) penetrates the side wall of the waste outlet (14) and communicates with the installation cavity (18). A deformable airbag (6) is fixed inside the mounting cavity (18). A compression plate (7) is fixed on one side of the free end of the airbag (6). A trigger slider (5) for squeezing the compression plate (7) is also fixed inside the mounting cavity (18). The trigger slider (5) is driven by the driving mechanism (4). When the trigger slider (5) is in the initial position, it opens the air inlet of the airbag (6). When the trigger slider (5) is driven by the drive mechanism (4), it squeezes the extrusion plate (7) and compresses the air in the airbag (6). When the scraper (2) moves above the waste outlet (14), it opens the air outlet of the airbag (6) so that the compressed gas is sprayed out from the blow hole (15) onto the scraper (2).

2. The cutting device for crankshaft machining according to claim 1, characterized in that: The mounting cavity (18) is slidably fitted with a U-shaped air inlet sealing plate (61) on one side of the air inlet of the airbag (6). When one side of the air inlet sealing plate (61) abuts against the side wall of the trigger slider (5), it moves away from the trigger slider (5) and opens the air inlet of the airbag (6). When the air inlet sealing plate (61) separates from the trigger slider (5), it closes the air inlet of the airbag (6). An air outlet sealing plate (8) is slidably installed on the inner wall of the mounting cavity (18) on the side close to the blow hole (15). A pressure support plate (81) is integrally formed on the side of the air outlet sealing plate (8) away from the air inlet sealing plate (61). An upper pressure wedge (51) for pressing down the pressure support plate (81) is fixed at the upper end of the trigger slider (5). When the upper pressure wedge (51) presses down the pressure support plate (81), the blow hole (15) is connected to the air outlet of the airbag (6). The upper end of the air outlet sealing plate (8) and the side of the airbag (6) away from the trigger slider (5) are elastically connected to the inner wall of the mounting cavity (18) through the reset spring (9). The air inlet sealing plate (61) slides left and right, and the air outlet sealing plate (8) slides up and down.

3. A cutting device for crankshaft machining according to claim 2, characterized in that: The trigger slider (5) has guide pressure walls (52) on both the front and rear sides. The guide pressure wall (52) on the front side of the trigger slider (5) is used to press the extrusion plate (7) to move towards the blow hole (15). The guide pressure wall (52) on the rear side of the trigger slider (5) is used to press the air inlet sealing plate (61) to move towards the blow hole (15). The upper wedge (51) forms an inclined sidewall on its front side, and the upper wedge (51) is used to press the pressure plate (81) downward.

4. A cutting device for crankshaft machining according to claim 1, characterized in that: The blow holes (15) are provided in multiple arrays and are evenly distributed along the side wall of the waste outlet (14). All the blow holes (15) are inclined downwards. The extension axis of the blow holes (15) coincides with the side of the scraper (2) above the waste outlet (14).

5. A cutting device for crankshaft machining according to claim 1, characterized in that: The drive mechanism (4) includes a drive motor (41), a transmission gear (44), a reciprocating screw (45), and a driven gear (46). The drive motor (41) is fixed to the back side of the frame (1) by a bracket. The transmission gear (44) is fixedly sleeved on the output shaft of the drive motor (41). The transmission gear (44) meshes with the driven gear (46). The driven gear (46) is fixedly sleeved on one end of the reciprocating screw (45). The reciprocating screw (45) rotates through the side wall of the frame (1) and extends to the front side of the mounting cavity (18). The reciprocating screw (45) threaded through the trigger slider (5) and drives the trigger slider (5) to move back and forth.

6. A cutting device for crankshaft machining according to claim 5, characterized in that: The collection trough (13) has a first annular guide groove (16) on its rear side. The first annular guide groove (16) is an annular groove. A support rod (21) with one end extending into the first annular guide groove (16) is fixedly inserted on the scraper (2). The drive mechanism (4) also includes sprockets (42) and chains (43). Multiple sprockets (42) are provided and are located at the four corners of the first ring guide groove (16). Multiple sprockets (42) are rotatably connected to the frame (1) through a rotating shaft. The rotating shaft of one of the sprockets (42) is fixed to the output shaft of the drive motor (41). The chain (43) is encircled on multiple sprockets (42) and drives multiple sprockets (42). A fixing hoop is fixed on the chain (43) and rotatedly sleeved on the end of the support rod (21).

7. A cutting device for crankshaft machining according to claim 6, characterized in that: The collection groove (13) has an annular second ring guide groove (17) on its front side. The second ring guide groove (17) is a rectangular groove. The support rod (21) has a square slider (22) fixed at one end away from the first ring guide groove (16). The square slider (22) is slidably embedded in the second ring guide groove (17) and has a clearance fit with the second ring guide groove (17). The square slider (22) is a cube with rounded corners on all four sides. The rounded corners of the square slider (22) correspond to the edge positions of the second ring guide groove (17).

8. A cutting device for crankshaft machining according to claim 7, characterized in that: Flexible sealing plates (19) are movably embedded in both the first annular guide groove (16) and the second annular guide groove (17). Multiple sliding hanging rods (192) are fixed on the outside of the flexible sealing plate (19) embedded in the first annular guide groove (16) and distributed in a ring along the edge of the flexible sealing plate (19). The sliding hanging rods (192) are slidably embedded in the peripheral side wall of the first annular guide groove (16). The inner side of the flexible sealing plate (19) is fixed to the side wall of the chain (43). The flexible sealing plate (19) embedded in the second annular guide groove (17) has multiple sliding rods (192) fixed on both the inner and outer sides, which are distributed in a ring along the edge of the flexible sealing plate (19). The multiple sliding rods (192) are respectively slidably embedded in the inner and outer side walls of the second annular guide groove (17). Both of the flexible sealing plates (19) are provided with through holes (191) through which the support rod (21) can move.

Images