A turning device for an automobile die-casting mold

Abstract

The application relates to the technical field of turning processing, and particularly discloses a turning processing equipment for an automobile die-casting die, an adjusting pump is fixedly installed at the center position of the upper end surface of a transverse moving table, a flexible connecting disc is rotatably installed at the upper end surface of the adjusting pump, and the upper end surface of the flexible connecting disc is attached to and slidably connected with a triangular plate; on the basis of a multi-degree-of-freedom adjustable machine head, an eccentric disc and a cam ring double-station processing assembly are additionally arranged, multi-angle processing capacity is optimized, and a rough and fine processing integrated synergy advantage is newly added: a large eccentric disc is matched with a motor to complete rough turning and large-amount cutting, a small eccentric disc is matched with a motor to complete fine turning and slight polishing, the cam ring realizes S-shaped curve walking, multi-station parallel processing can be realized, a tool bit does not need to be replaced and processing parameters do not need to be adjusted in the middle, process circulation time is shortened, positioning deviation caused by tool replacement is avoided, and processing precision and forming quality are improved.

Description

Technical Field

[0001] This invention relates to the field of turning technology, and in particular to a turning equipment for automotive die-casting molds. Background Technology

[0002] Automotive die-casting molds contain a large number of curved surfaces and inclined irregular cavities, and the industry's commonly used traditional turning equipment has multiple shortcomings in batch precision machining scenarios.

[0003] Conventional turning heads on the market only support single-plane feed adjustment and lack a multi-dimensional linkage adjustment architecture for transverse, longitudinal, rotation, and tilt. When machining irregular die-casting molds, multiple disassembly and flipping and repeated positioning are required, which can easily lead to dimensional deviations. It is difficult to balance processing efficiency and forming accuracy.

[0004] Meanwhile, the industry's standard clamping structure is a fixed, rigid jaw, which cannot adapt to the contours of the concave and convex molds. Uneven clamping force can easily cause cutting vibrations and scratches on the mold forming surface. In addition, the roughing and finishing processes are separated into two machines, and the workpiece is transferred and clamped twice, which amplifies the error. Furthermore, the equipment does not have an integrated chip removal, cooling and separation structure. Waste chips and coolant accumulate and can easily jam the transmission mechanism. The amount of manual cleaning is large. These multiple defects combine to form the industry's comprehensive pain points.

[0005] Existing equipment cannot simultaneously achieve multi-position head adjustment, adaptive flexible clamping, dual-station integrated machining, and automatic chip removal, making it difficult to meet the needs of large-scale production of high-precision die-casting molds. Summary of the Invention

[0006] The purpose of this invention is to provide a machining equipment for automotive die-casting molds to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a turning processing equipment for automotive die casting molds, comprising a base platform, a worktable fixedly installed inside the base platform, and transverse moving platforms slidably installed at both ends of the upper part of the worktable; Gear groove rings are rotatably mounted on the upper end faces of both left and right transverse moving platforms. Support rods are rotatably mounted on the upper end faces of the gear groove rings. Triangular plates are rotatably mounted on the upper end faces of the support rods. Processing motors are designed on the upper end faces of the triangular plates. An adjusting pump is fixedly installed at the center of the upper end face of the transverse moving platform. A flexible connecting plate is rotatably installed on the upper end face of the adjusting pump. The upper end face of the flexible connecting plate is in contact with and slidably connected to the triangular plate. An installation platform is fixedly installed on the upper surface of the workbench, and a clamping platform is rotatably installed on the upper surface of the installation platform.

[0008] Preferably, the upper surface of the workbench is recessed to the inside, and multiple waste ports are provided in the recessed area from the front surface to the inside. A first filter screen is slidably installed on the upper front part of the base platform. A drain plate is fixedly installed inside the base platform and below the first filter screen. A discharge plate is fixedly installed on the outer side of one end of the base platform. The discharge plate and the drain plate are in a through connection state, and the drain plate is in an inclined state.

[0009] Preferably, a second filter screen is fixedly installed on both the left and right sides of the base platform, and a servo motor is fixedly installed on both the left and right sides inside the base platform. A first grooved ring is fixedly installed on the circumferential surface of the output shaft of the servo motor. A track is rotatably installed on the circumferential surface of the first grooved ring. A second grooved ring is rotatably installed on the other end of the track. The second grooved ring is rotatably installed inside the worktable.

[0010] Preferably, threaded rods are fixedly installed on the inner side of the second groove ring, and the two threaded rods are in a straight line. An installation platform is rotatably installed on the adjacent end of the two threaded rods. The upper end of the workbench is fixedly installed on the lower end of the installation platform. Multiple first grooves are opened on the upper end of the installation platform, and a first telescopic pump is rotatably installed inside the first groove.

[0011] Preferably, the first telescopic pumps are arranged in pairs and in opposite positions. Each telescopic rod of the first telescopic pump is fixedly equipped with an arc-shaped connecting rod. The end of each arc-shaped connecting rod away from the first telescopic pump is rotatably equipped with a clamping platform. Rotating connecting rods are fixedly installed on both the left and right sides of the lower end face of the clamping platform. The interior of the rotating connecting rod is a hollow structure. Symmetrical miniature clamping pumps are fixedly installed at both ends of the mounting platform. The telescopic rod of each miniature clamping pump can slide into the interior of the rotating connecting rod.

[0012] Preferably, a sliding groove is formed from the upper end surface to the interior of the clamping platform, and a U-shaped cavity is formed inside the clamping platform and below the sliding groove. A flexible push rod is slidably installed inside the cavity. A clamping rod is fixedly installed at the upper end of the flexible push rod and inside the sliding groove. A flexible pad is fixedly installed inside the upper end of the clamping rod. A return spring is fixedly installed between the lower end of the clamping rod and the inner sidewall of the sliding groove. The inner sides of multiple clamping rods jointly clamp the workpiece.

[0013] Preferably, a transverse guide rod is fixedly installed on both the left and right sides of the upper end of the worktable, and a transverse moving platform is slidably installed on the outer side of the transverse guide rod. The transverse moving platform is threadedly rotatably connected to two adjacent threaded rods. A limit rod is fixedly installed on the upper end of the transverse moving platform, and a longitudinal guide platform is slidably installed on the outer side of the limit rod. A second telescopic pump is fixedly installed at the rear end of each longitudinal guide platform, and the second telescopic pump is fixedly installed on the rear end face of the transverse moving platform.

[0014] Preferably, a forward and reverse motor is fixedly installed inside the longitudinal guide platform, a gear is fixedly installed on the output shaft of the forward and reverse motor, a gear groove ring is meshed on the outer side of the gear, and a support rod is evenly rotated and mounted in a ring array on the upper end face of the gear groove ring.

[0015] Preferably, a slide table is fixedly installed on the inner side of the lower end face of the triangular plate. The slide table is slidably installed inside the convex groove. The convex groove is opened on the upper end face of the flexible connecting plate. A grooved rod is fixedly installed on the upper end face of the triangular plate. A rotating plate is rotatably installed inside the grooved rod. A tension spring is fixedly installed inside the upper part of the rotating plate. A sliding plate is fixedly installed on the outer side of the tension spring. A buffer pad is fixedly installed inside the outer end of the sliding plate. A processing motor is clamped inside the buffer pad.

[0016] Preferably, the number of processing motors is six. Among them, three of the processing motors have drive rods nested on the outer side of one end of their internal parts. The lower end of the drive rod passes through a through slot in a triangular plate, and a disc is eccentrically fixed to the lower end of the drive rod. A variable frequency motor is fixedly installed at one end of the disc and is fixedly installed on the lower end face of the triangular plate. The other three processing motors have adjusting rods nested on one end of their internal parts. The lower end of the adjusting rods slides through the through slot and a cam ring is installed. The same variable frequency motor is also fixedly installed on the inner side of the cam ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. Based on a multi-degree-of-freedom adjustable machine head, this invention adds a dual-station machining component consisting of an eccentric disc and a cam ring, optimizing multi-angle machining capabilities and adding the integrated advantages of roughing and finishing: the large eccentric disc, equipped with a motor, completes roughing with large allowance cutting, while the small eccentric disc, equipped with a motor, completes finishing with micro-grinding. The cam ring achieves S-curve movement, enabling parallel machining at multiple stations without the need to change tool heads or adjust machining parameters midway, shortening process flow time, avoiding tool change positioning deviations, improving machining accuracy and forming quality, and solving the pain points of cumbersome processes and long cycles of traditional single-station turning equipment. It is suitable for high-precision machining of complex cavities and curved surfaces of automotive die-casting molds. Multiple stations share a single multi-directional adjustable machine head, solving the defects of traditional equipment that have limited posture adjustment and require repeated flipping.

[0018] 2. This invention relies entirely on a multi-degree-of-freedom machine head structure composed of a base platform, a transverse moving platform, a gear groove ring, a triangular machining platform, and a flexible connecting plate. It solves the core problems of traditional machine heads having a single adjustment dimension and requiring repeated mold flipping for positioning. The threaded rod drives the transverse moving platform to achieve left and right feed, while the forward and reverse motors drive the gear ring to complete circumferential rotation. The adjusting pump pushes the flexible connecting plate to change the tilt angle of the triangular plate, and the machining motor can achieve three-dimensional linkage adjustment of horizontal, rotational, and tilting. Die-cast curved surfaces and inclined cavity molds can be machined at multiple angles in a single clamping without the need for repeated disassembly and repositioning. This eliminates dimensional errors caused by repeated clamping from the basic structure of the machine head, significantly improving machining accuracy and single-piece machining efficiency.

[0019] 3. This invention enables different degrees of roughing and finishing through discs with different eccentric settings on the left and right sides. Furthermore, the subsequent cam ring enables cavity trimming with different machining radii, filling the gap in existing equipment that cannot complete the entire process from roughing to finishing under the same clamping conditions. It also solves the shortcoming of traditional automotive die-casting mold turning, which requires multiple roughing and finishing machines. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a structural diagram of the main body of the present invention; Figure 2 This is a structural diagram of the base platform of the present invention; Figure 3 This is a structural diagram of the first filter screen and the base platform of the present invention; Figure 4 This is a structural diagram of the workbench of the present invention; Figure 5 This is a structural diagram of the mounting platform and workpiece of the present invention; Figure 6 This is a cross-sectional view of the card table of the present invention; Figure 7 This is a structural diagram of the clamping rod of the present invention; Figure 8 This is a structural diagram of the guide rod and the transverse moving stage of the present invention; Figure 9 This is a structural diagram of the longitudinal guide rod and triangular plate of the present invention; Figure 10 This is a structural diagram of the second telescopic pump and triangular plate of the present invention; Figure 11This is a structural diagram of the grooved rod and rotating plate of the present invention; Figure 12 This is a structural diagram of the triangular plate and the machining motor of the present invention; Figure 13 This is a structural diagram of the cam ring and machining motor of the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Base platform; 2. First filter screen; 3. Drain plate; 4. Discharge plate; 5. Worktable; 6. Waste port; 7. Second filter screen; 8. Servo motor; 9. First grooved ring; 10. Track; 11. Second grooved ring; 12. Threaded rod; 13. Mounting platform; 14. First groove; 15. First telescopic pump; 16. Arc-shaped connecting rod; 17. Miniature clamping pump; 18. Rotating connecting rod; 19. Clamping platform; 20. Sliding groove; 21. Cavity groove; 22. Flexible push rod; 23. Clamping rod; 24. Flexible pad; 25. Return spring; 26. Workpiece; 7. Horizontal guide rod; 28. Horizontal moving table; 29. ​​Limiting rod; 30. Longitudinal guide table; 31. Second telescopic pump; 32. Forward and reverse motor; 33. Gear; 34. Gear groove ring; 35. Support rod; 36. Triangular plate; 37. Slide table; 38. Through groove; 39. Adjusting pump; 40. Flexible connecting plate; 41. Convex slide groove; 42. Variable frequency motor; 43. Disc; 44. Drive rod; 45. Processing motor; 46. Groove rod; 47. Rotating plate; 48. Tension spring; 49. Sliding plate; 50. Buffer pad; 51. Cam ring; 52. Adjusting rod. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1 to 13 The present invention provides a technical solution: A turning machine for automotive die-casting molds includes a base platform 1, with a first filter screen 2 slidably mounted on the upper front end of the base platform 1. Figure 3 As shown, the upper front end of the base platform 1 has two supporting structures on both sides, allowing the first filter screen 2 to be slidably installed on the upper surface of the base platform 1 for separating coolant and waste. Secondly, a drain plate 3 is fixedly installed inside the base platform 1, below the first filter screen 2. The drain plate 3 is inclined, allowing the coolant to flow through the opening on the left side of the base platform 1 and, with the assistance of the discharge plate 4, enter the interior of the outer container. Figure 3 As shown.

[0025] Therefore, during use, the coolant can carry the waste chips and scrap generated during turning to the upper end of the first filter screen 2. The first filter screen 2 intercepts the waste at the upper end through the mesh, while the coolant passes through the first filter screen 2 and falls onto the surface of the drain plate 3. Finally, it flows out from the discharge plate 4 along the inclined drain plate 3, completing the automatic separation of coolant and waste chips. This facilitates the subsequent centralized cleaning of waste and the recycling and reuse of coolant, reducing resource waste and cleaning workload during the processing.

[0026] A T-shaped workbench 5 is fixedly installed inside the base platform 1. The upper surface of the workbench 5 is recessed, and three waste inlets 6 are opened from the front surface to the recess. The outlets of the waste inlets 6 are located above the first filter screen 2. Furthermore, the groove structure inside the workbench 5 is inclined to allow waste and coolant to enter the interior of the waste inlets 6 and then flow into the upper surface of the first filter screen 2. Figure 1 As shown.

[0027] Therefore, during the operation, the waste chips and mixed coolant generated in the processing area will fall into the recessed structure at the top of the workbench 5, flow along the inclined groove to the waste port 6 at the front end, and be discharged directly through the waste port 6 to the top of the first filter screen 2, thus completing the automatic diversion of the waste chip and coolant mixture. Without the need for an additional power conveying structure, the waste mixture generated during processing can be guided to the separation position, reducing the overall energy consumption and structural complexity of the equipment.

[0028] The lower left and right sides of the base platform 1 are each fixedly fitted with a second filter screen 7 using nuts. Inside the filter screen 7, i.e., inside the base platform 1, a servo motor 8 is fixedly installed. A first grooved ring 9 is slidably mounted on the circumferential surface of the output shaft of each servo motor 8. The two are slidably combined using a pin and groove structure. A track 10 is rotatably mounted on the circumferential surface of the first grooved ring 9. A second grooved ring 11 is rotatably mounted on the other end of the inner side of the track 10. A threaded rod 12 is fixedly installed at the center of the inner surface of the second grooved ring 11. Figure 4 As shown, it should be noted that the track 10 is made of special materials, such as oil-resistant and wear-resistant engineering rubber, which can work for a long time in an environment mixed with metal shavings and coolant, and is not prone to aging, cracking or being scratched by sharp debris, thus having a longer service life.

[0029] Therefore, during use, when the servo motor 8 drives the first grooved ring 9 to rotate, the power is transmitted to the second grooved ring 11 through the track 10, which in turn drives the threaded rod 12 to rotate synchronously. The output shaft of the servo motor 8 and the first grooved ring 9 adopt a pin sliding fit structure design, which can accommodate the slight positional displacement of the first grooved ring 9 caused by the transmission of the track 10, avoid the problem of jamming and stalling during power transmission, and ensure the stability of power transmission. At the same time, this combination structure is easy to disassemble and maintain. When the track 10 or the first grooved ring 9 is worn or damaged, the pin can be pulled out directly to remove the first grooved ring 9 from the output shaft for replacement, without disassembling the entire servo motor 8 and base platform 1 structure, which greatly improves the convenience of maintenance operations and reduces the time spent on maintenance operations.

[0030] The second filter 7 protects the inner space of the equipment, preventing metal debris generated during processing inside the base platform 1 from splashing onto the outer servo motor 8 area. It also prevents debris from getting stuck in the threaded fit gap between the threaded rod 12 and the base platform 1, thus avoiding obstruction of the rotation of the threaded rod 12. This further improves the stability of the threaded rod 12's transmission process and extends the service life of the threaded rod 12 and its mating structure. In addition, the second filter 7 is fixed by a nut, allowing for quick disassembly and cleaning of the filtered debris, making maintenance simple and convenient.

[0031] A mounting platform 13 is fixedly installed at the center of the upper end face of the base 1. The mounting platform 13 is rotatably connected to the threaded rods 12 at the left and right ends without interfering with each other. Furthermore, four first grooves 14 are horizontally formed on the upper end face of the mounting platform 13. A first telescopic pump 15 is rotatably installed inside each of the first grooves 14. The first telescopic pumps 15 are arranged in pairs, in opposite positions. A specially designed arc-shaped connecting rod 16 is fixedly installed on the telescopic rod of each first telescopic pump 15. The ends of two adjacent arc-shaped connecting rods 16 furthest from the first telescopic pump 15 are rotatably mounted with the same clamping platform 19. Figure 5 As shown.

[0032] Rotating connecting rods 18 are fixedly installed on both the left and right sides of the lower end face of the mounting platform 13. The two ends of the rotating connecting rods 18 are hollow structures. Furthermore, miniature clamping pumps 17 are fixedly installed on both sides of the mounting platform 13, located outside the rotating connecting rods 18. The telescopic rods of the miniature clamping pumps 17 can extend into the interior of the rotating connecting rods 18 to assist in the rotation of the clamping platform 19. Figure 5 As shown.

[0033] Therefore, during use, when it is necessary to adjust the processing state of the subsequent workpiece 26, the corresponding first telescopic pump 15 can be activated for telescopic adjustment. When the telescopic rod of the first telescopic pump 15 extends, it will drive the arc-shaped connecting rod 16 to rotate, thereby allowing the arc-shaped connecting rod 16 to rotate the clamping table 19. The clamping table 19 can rotate 90 degrees with the help of the rotating connecting rod 18 and the micro clamping pump 17. Furthermore, since the four first telescopic pumps 15 are in pairs and in opposite directions, the clamping table 19 can rotate 180 degrees, thereby realizing roughing and fine machining.

[0034] It should be noted that when the clamping platform 19 rotates, the miniature clamping pump 17 at the other end needs to contact and rotate the sliding combination of the connecting rod 18 to avoid interfering with the operation.

[0035] The upper surface of the card holder 19 has four sliding grooves 20, and a U-shaped cavity 21 located below and on the outside of the sliding grooves 20. A flexible push rod 22 is slidably installed inside the cavity 21. A clamping rod 23 is fixedly installed at the upper end of the flexible push rod 22. The clamping rod 23 is slidably installed inside the sliding groove 20, and a flexible pad 24 is fixedly installed inside its upper part. Figure 5 , Figure 6 and Figure 7 As shown.

[0036] It should be noted that hydraulic oil is filled into the cavity groove 21, and is squeezed and pushed by the internal hydraulic rod, thereby causing the flexible push rod 22 to slide and operate inside the cavity groove 21. Furthermore, a return spring 25 is fixedly installed between the clamping rod 23 and the inner sidewall of the sliding groove 20. Figure 7 As shown.

[0037] Therefore, during use, when the workpiece 26 needs to be clamped and fixed, the hydraulic rod pushes the flexible push rod 22 to slide inside the cavity groove 21, so that the corresponding clamping rod 23 slides outward synchronously under the action of the sliding groove 20. At this time, the flexible pad 24 first contacts the corner of the outer contour of the workpiece 26. If a clamping rod 23 contacts the workpiece 26 first and is subjected to reverse compression, the flexible push rod 22 at that position will retract inward, squeezing the hydraulic oil in the cavity groove 21 to flow to other unforced areas, pushing the flexible push rod 22 at the corresponding position to continue to extend outward until all clamping rods 23 are close to the outer surface of the workpiece 26, thus completing the adaptive multi-point clamping operation.

[0038] Compared to traditional single-point clamping or fixed-size clamping structures, this adaptive hydraulic clamping structure can conform to workpieces 26 with different contours, ensuring that each contact point can provide sufficient clamping force. It will not cause local clamping problems due to contour errors of workpieces 26. At the same time, the flexible pad 24 can buffer the vibration caused by cutting, which can not only protect the surface of workpieces 26 from being pinched, but also improve the stability of the machining process and reduce the machining errors caused by cutting vibration. When the machining is completed, the hydraulic rod is unloaded, the return spring 25 will pull the clamping rod 23 to return to its original position, and the flexible push rod 22 will return to its initial position. The machined workpiece 26 can then be easily removed, completing the entire clamping and machining process.

[0039] It should be noted that the internal structure of the card table 19 is equipped with multiple hydraulic rods connected in series, which enables precise adjustment of the working state of each flexible push rod 22.

[0040] Additionally, a transverse moving platform 28 is threadedly mounted on the circumferential surface of the threaded rod 12, and transverse guide rods 27 are fixedly mounted on both the left and right ends of the upper inner side of the base platform 1. The transverse moving platform 28 is slidably mounted on the outer side of the transverse guide rods 27. Figure 8 As shown.

[0041] Limiting rods 29 are fixedly installed on both the left and right edges of the upper end face of the transverse moving platform 28. A longitudinal guide platform 30 is slidably installed on the outer side of the limiting rods 29. A second telescopic pump 31 is fixedly installed at the rear end of each longitudinal guide platform 30. The second telescopic pump 31 is fixedly installed on the rear end face of the transverse moving platform 28. Figure 8 As shown.

[0042] Therefore, during use, when the threaded rod 12 rotates, it drives the transverse moving table 28 to slide laterally along the transverse guide rod 27, thereby adjusting the transverse position of the longitudinal guide table 30 and the workpiece 26 above, and adapting to the transverse machining position requirements of workpieces 26 of different sizes. When the second telescopic pump 31 extends and retracts, it can drive the longitudinal guide table 30 to slide longitudinally along the limit rod 29, thereby adjusting the longitudinal machining position of the workpiece 26, and cooperating with the turning mechanism to complete the cutting operations at different positions.

[0043] A forward and reverse motor 32 is fixedly installed inside the longitudinal guide platform 30. The output shaft of the forward and reverse motor 32 extends to the outside of the longitudinal guide platform 30 and is fixedly installed with a gear 33. A gear groove ring 34 is meshed on the outside of the gear 33. The gear groove ring 34 is rotatably installed on the upper end face of the longitudinal guide platform 30. The two are rotatably connected by an L-shaped structure and an L-shaped groove. Multiple support rods 35 are evenly fixedly installed in a ring array on the upper end face of the gear groove ring 34. A triangular plate 36 is rotatably installed on the upper end of each support rod 35. A slide table 37 is fixedly installed on the lower inner end face of each triangular plate 36. The slide table 37 is slidably installed on the upper end face of the flexible connecting plate 40. A convex groove 41 is opened on the upper end face of the flexible connecting plate 40. The slide table 37 is slidably installed inside the convex groove 41. An adjusting pump 39 is rotatably installed on the lower end face of the flexible connecting plate 40. The lower end of the adjusting pump 39 is fixedly installed on the upper end face of the longitudinal guide platform 30. Figure 9 and Figure 10 As shown.

[0044] Therefore, during use, when it is necessary to adjust the axial machining angle of the workpiece 26, the forward and reverse motors 32 can directly drive the gear 33 to rotate. The gear 33 drives the gear groove ring 34 to rotate on the upper end face of the longitudinal guide table 30 through meshing. Then, through the support rod 35, the workpiece 26 above is driven to rotate together, so as to adjust the machining state of the automotive die-casting mold workpiece 26 and replace the corresponding machining tool.

[0045] If it is necessary to adjust the tilting machining angle of workpiece 26, the adjustable pump 39 can push the flexible connecting plate 40 up and down. Since the lower inner end of the triangular plate 36 is slidably connected to the flexible connecting plate 40 through the slide table 37, when the flexible connecting plate 40 is raised and lowered, it will push each triangular plate 36 to deflect around the rotation node at the upper end of the support rod 35, thereby causing the workpiece 26 clamped above to tilt and deflect synchronously. The turning machining tilt angle of workpiece 26 can be quickly adjusted to adapt to the multi-face and multi-angle machining requirements of different types of die-casting molds. There is no need to change the clamping fixture, which can greatly reduce the tooling change time and improve the overall processing efficiency.

[0046] It should be noted that when the flexible connecting disc 40 moves upward, it will tilt outward due to the squeezing and driving of the triangular plate 36, thereby ensuring the sliding combination operation of the triangular plate 36 and enabling it to rotate without interference.

[0047] Each of the three triangular plates 36 has a variable frequency motor 42 fixedly mounted on its lower end face. A disc 43 is fixedly mounted on the output shaft of each of the three variable frequency motors 42. A drive rod 44 is eccentrically mounted on one side of each disc 43. The drive rod 44 passes through a through slot 38 on the triangular plate 36 and is then rotatably connected to a machining motor 45. Figure 1As shown, the left side represents rough machining, and the right side represents fine machining. Therefore, the eccentricity distance between each disk 43 and drive rod 44 is different.

[0048] A grooved rod 46 is fixedly installed at the center of the upper end face of the triangular plate 36. A rotating plate 47 is rotatably installed inside the grooved rod 46. Tension springs 48 are fixedly installed inside the upper two ends of the rotating plate 47. Sliding plates 49 are fixedly installed outside the tension springs 48 and inside the rotating plate 47. Buffer pads 50 are fixedly installed on the inner sides of two adjacent sliding plates 49. A processing motor 45 is clamped inside two adjacent buffer pads 50. Figure 10 and Figure 11 As shown.

[0049] Therefore, during use, the eccentrically set disc 43 and drive rod 44 can drive the processing motor 45 to rotate regularly. Combined with the rotational feed of the workpiece 26 on the lathe, the outer peripheral turning of the variable diameter curved surface workpiece 26 can be completed in one go, avoiding the accuracy error caused by multiple clamping and adjustment, and effectively improving the processing efficiency and processing accuracy of the irregular curved surface workpiece 26.

[0050] Meanwhile, the drive rods 44 with different eccentric distances provide different swing angle ranges for the left roughing station and the right finishing station. The left roughing station has a larger eccentric distance and a wider swing angle range for the machining motor 45, which can quickly remove most of the redundant material of the workpiece 26. The right finishing station has a smaller eccentric distance and a smoother swing angle change for the machining motor 45, which can achieve higher machining surface accuracy and match the process requirements of different machining stages.

[0051] The rotating plate 47, in conjunction with the tension spring 48 and the buffer pad 50, can adaptively buffer and absorb high-frequency vibrations generated during processing. This prevents vibrations from being transmitted to the main body of the equipment and affecting the overall processing stability, while also reducing the wobble of the machining tool, extending its service life, and further ensuring processing accuracy. The machining motor 45 is connected to achieve a rotating hinge, which can both complete the swing angle movement with the drive rod 44 and provide stable support and limit for the machining motor 45, preventing unnecessary displacement of the machining motor 45 under the action of cutting force.

[0052] Secondly, cam rings 51 are fixedly installed on the output shafts of the other three variable frequency motors 42. Adjusting rods 52 are rotatably installed on the outer circumferential surface of the cam rings 51. It should be noted that the circumferential surface of the cam rings 51 has a groove structure and an irregular S-shaped curve inside. Therefore, during the rotation, the adjusting rods 52 will slide up and down irregularly, thereby adjusting the up and down angle of the subsequent processing motors 45. Thus, it is possible to perform adaptive processing on automotive die-casting mold workpieces 26 with irregular curved surfaces. By driving the cam rings 51 to rotate through the variable frequency motors 42, the adjusting rods 52 can be precisely driven to complete the angle adjustment according to the preset curved surface trend. Combined with the rotational feed of the workpieces 26, the turning of complex irregular curved surfaces can be completed in one go without the need for multiple disassembly and reassembly to change processing stations.

[0053] Compared to traditional split-type multi-station machining, the structure can effectively avoid positioning errors caused by multiple clamping, greatly improving the machining accuracy and efficiency of complex curved surface molds. In addition, the contour curve of the cam ring 51 can be pre-customized according to the surface parameters of the mold to be processed. For die-casting mold workpieces 26 of different specifications, only the cam ring 51 with the corresponding contour needs to be replaced for adaptation and processing. The equipment has stronger adaptability and flexibility, and can meet the processing needs of multi-variety small batch automotive die-casting molds.

[0054] In conventional mold processing, large-diameter, high-rigidity cutting tools are typically used for rough machining of pre-cast or pre-forged blanks to quickly remove excess material. However, this rough machining inevitably leaves noticeable tool marks and localized unevenness on the cavity surface. If a small-diameter finishing tool is used to cut these surfaces in a single pass, the narrow cavity space leads to excessive tool overhang and insufficient tool rigidity. Forcing cutting under these conditions can easily cause severe tool chatter and sudden changes in cutting load, resulting in significant defects on the finished surface. The "knife phenomenon," or a wavy surface, fails to meet the quality requirements of a mirror or matte finish. It also accelerates tool wear and can even cause chipping, significantly reducing processing efficiency and yield. This device employs a micro-adjustment method that can reciprocate and oscillate. Specifically, when the frequency converter motor 42 starts and drives the disc 43 to rotate, the reciprocating motion of the eccentrically positioned drive rod 44 within the through slot 38 is converted into a micro-angle oscillation by the processing motor 45 and the finishing tool. This action is not a traditional continuous linear cutting, but a high-frequency micro-amplitude reciprocating grinding and micro-cutting composite action.

[0055] In practical use, taking the deep cavity surface finishing of the front bumper mold of an automotive exterior body panel mold as an example, after rough machining, there are irregular tool marks with a depth of about 0.1mm-0.3mm on the bottom and side walls of the cavity, and the allowance is unevenly distributed. At this time, the motor 45 of the ball end mill or the motor 45 of the round nose end mill is replaced with a smaller diameter. After starting, the tool feeds along the cavity contour and performs the radial reciprocating oscillation provided by this solution. The cutting edge of the tool continuously changes the instantaneous cutting angle within a small oscillation range. This mechanical action, similar to the micro-finishing of a hand file, can effectively break up and evenly remove the macro tool marks left by rough machining.

[0056] Moreover, during the reciprocating oscillation process, the contact point between the tool and the workpiece 26 is in dynamic change, which helps to periodically release the heat and internal stress accumulated in the cutting area, significantly reducing the generation of built-up edge, thereby extending the service life of the fragile finishing tool. In addition, for areas with drastic curvature changes in the mold cavity, rigid cutting with a fixed trajectory is difficult to ensure uniform force across the entire tool width, while the micro-oscillation of the tool gives the machining head a certain degree of flexibility, enabling it to better conform to the complex three-dimensional curved surface and ensure consistent cutting quality at different positions.

[0057] Furthermore, by setting different S-shaped curve cam rings 51, the contour direction of the cam ring 51 can be customized to match the distribution of residual allowance in the roughing of the automotive die-casting mold surface. This allows the swing amplitude of the machining tool driven by the adjusting rod 52 to be perfectly matched with the residual allowance at the corresponding position, thereby achieving targeted removal of allowance. This avoids the problem of excessive tool load when the local allowance is too large and wasted time when the local allowance is too small due to the one-cut machining method. While ensuring machining quality, it further reduces finishing time and improves overall machining efficiency. At the same time, cam rings 51 with different curve parameters can also adapt to the machining needs of die-casting molds with different surface complexities and materials. The swing pattern of the tool can be adjusted simply by changing the cam ring 51, without the need to modify or adjust the overall structure of the equipment. This further reduces the modification cost for multi-scenario machining and improves the versatility of the equipment.

[0058] Therefore, through the combination and use of the above structure, compared with the single processing device on the market, this device can flexibly adapt to the clamping and processing of automotive die-casting mold workpieces 26 of different sizes and processing requirements. It can not only meet the conventional turning processing of plane and rotating surfaces, but also quickly adjust the angle and processing position of workpiece 26, realizing multi-angle and multi-process integrated processing. There is no need to repeatedly disassemble and replace fixtures and adjust machine tools, which effectively reduces the intensity of manual operation and shortens the processing cycle of a single batch of mold workpieces 26. At the same time, the integrated rough and fine dual-station processing also avoids the positioning error caused by multiple clamping, which can significantly improve the processing accuracy and product qualification rate of automotive die-casting molds.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A turning machine for automotive die-casting molds, comprising a base platform (1), characterized in that: The base platform (1) is fixedly installed with a work platform (5), and the upper two ends of the work platform (5) are slidably installed with transverse moving platforms (28). Gear groove rings (34) are rotatably mounted on the upper end face of both left and right transverse moving platforms (28). Support rods (35) are rotatably mounted on the upper end face of each gear groove ring (34). Triangular plates (36) are rotatably mounted on the upper end face of each support rod (35). A processing motor (45) is designed on the upper end face of each triangular plate (36). An adjusting pump (39) is fixedly installed at the center of the upper end face of the transverse moving platform (28). A flexible connecting plate (40) is rotatably installed on the upper end face of the adjusting pump (39). The upper end face of the flexible connecting plate (40) is in contact with and slidably connected to the triangular plate (36). An installation platform (13) is fixedly installed on the upper surface of the workbench (5), and a clamping platform (19) is rotatably installed on the upper surface of the installation platform (13).

2. The turning equipment for automobile die-casting molds according to claim 1, characterized in that: The upper surface of the workbench (5) is recessed to the inside, and multiple waste ports (6) are provided in the recessed front surface. A first filter screen (2) is slidably installed on the upper front part of the base platform (1). A drain plate (3) is fixedly installed inside the base platform (1) and below the first filter screen (2). A discharge plate (4) is fixedly installed on the outer side of one end of the base platform (1). The discharge plate (4) and the drain plate (3) are in a through connection state, and the drain plate (3) is in an inclined state.

3. The turning equipment for automobile die-casting molds according to claim 2, characterized in that: The base platform (1) is fixedly installed with a second filter screen (7) on both the left and right sides. The base platform (1) is fixedly installed with a servo motor (8) on both the left and right sides inside. The output shaft of the servo motor (8) is fixedly installed with a first groove ring (9). The first groove ring (9) is rotatably installed with a track (10) on the circumference of the track (9). The other end of the track (10) is rotatably installed with a second groove ring (11). The second groove ring (11) is rotatably installed inside the worktable (5).

4. The turning equipment for automobile die-casting molds according to claim 3, characterized in that: The inner side of the second groove ring (11) is fixedly installed with threaded rods (12). The two threaded rods (12) are in a straight line. The adjacent ends of the two threaded rods (12) are rotatably installed with mounting platforms (13). The lower end face of the mounting platform (13) is fixedly installed with the upper end face of the workbench (5). The upper end face of the mounting platform (13) has multiple first grooves (14). The first telescopic pump (15) is rotatably installed inside the first groove (14).

5. The turning equipment for automobile die-casting molds according to claim 4, characterized in that: The first telescopic pumps (15) are arranged in pairs and in opposite states. Each telescopic rod of the first telescopic pump (15) is fixedly equipped with an arc-shaped connecting rod (16). Each arc-shaped connecting rod (16) is rotatably equipped with a clamping platform (19) at the end away from the first telescopic pump (15). Rotating connecting rods (18) are fixedly installed on both the left and right sides of the lower end face of the clamping platform (19). The interior of the rotating connecting rod (18) is a hollow structure. Each end of the mounting platform (13) is fixedly equipped with a symmetrical miniature clamping pump (17). The telescopic rod of the miniature clamping pump (17) can slide into the interior of the rotating connecting rod (18).

6. The turning equipment for automobile die-casting molds according to claim 5, characterized in that: The upper end face of the clamping platform (19) is provided with a sliding groove (20) extending into the interior. A U-shaped cavity groove (21) is provided inside the clamping platform (19) and below the sliding groove (20). A flexible push rod (22) is slidably installed inside the cavity groove (21). A clamping rod (23) is fixedly installed at the upper end of the flexible push rod (22) and inside the sliding groove (20). A flexible pad (24) is fixedly installed inside the upper end of the clamping rod (23). A return spring (25) is fixedly installed between the lower end of the clamping rod (23) and the inner side wall of the sliding groove (20). The inner sides of multiple clamping rods (23) jointly clamp the workpiece (26).

7. The turning equipment for automobile die-casting molds according to claim 5, characterized in that: The upper left and right sides of the worktable (5) are fixedly installed with transverse guide rods (27). A transverse moving platform (28) is slidably installed on the outer side of the transverse guide rods (27). The transverse moving platform (28) is threadedly connected to two adjacent threaded rods (12). A limit rod (29) is fixedly installed on the upper end of the transverse moving platform (28). A longitudinal guide platform (30) is slidably installed on the outer side of the limit rod (29). A second telescopic pump (31) is fixedly installed on the rear end of the longitudinal guide platform (30). The second telescopic pump (31) is fixedly installed on the rear end face of the transverse moving platform (28).

8. The turning equipment for automobile die-casting molds according to claim 7, characterized in that: The longitudinal guide (30) is fixedly installed with a forward and reverse motor (32), and the output shaft of the forward and reverse motor (32) is fixedly installed with a gear (33). A gear groove ring (34) is meshed on the outside of the gear (33), and support rods (35) are evenly installed in a ring array on the upper end face of the gear groove ring (34).

9. The turning equipment for automobile die-casting molds according to claim 1, characterized in that: A slide table (37) is fixedly installed on the inner side of the lower end face of the triangular plate (36). The slide table (37) is slidably installed inside the convex groove (41). The convex groove (41) is opened on the upper end face of the flexible connecting plate (40). A grooved rod (46) is fixedly installed on the upper end face of the triangular plate (36). A rotating plate (47) is rotatably installed inside the grooved rod (46). A tension spring (48) is fixedly installed inside the upper part of the rotating plate (47). A sliding plate (49) is fixedly installed on the outer side of the tension spring (48). A buffer pad (50) is fixedly installed inside the outer end of the sliding plate (49). A processing motor (45) is clamped inside the buffer pad (50).

10. The turning equipment for automobile die-casting molds according to claim 9, characterized in that: The number of processing motors (45) is six. Among them, three of the processing motors (45) have a drive rod (44) nested on the outer side of one end inside. The lower end of the drive rod (44) passes through the through slot (38) opened on the triangular plate (36) and a disc (43) is fixedly installed on the lower end. A variable frequency motor (42) is fixedly installed on one end of the disc (43). The variable frequency motor (42) is fixedly installed on the lower end face of the triangular plate (36). The other three processing motors (45) have an adjusting rod (52) nested on one end inside. The lower end of the adjusting rod (52) passes through the through slot (38) and a cam ring (51) is slidably installed. The same variable frequency motor (42) is also fixedly installed on the inner side of the cam ring (51).

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