Device for releasing the alarm of the inner milling center frame twist
By installing a hydraulic cylinder and a traction mechanism on the internal milling center rest, and utilizing the principle of three points forming a plane, the problem of torsion alarm during the transverse movement of the center rest was solved, thereby achieving stable operation of the machine tool and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIANGYANG FUDA DONGKANG CRANKSHAFT
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-14
AI Technical Summary
The existing internal milling center rest is prone to twisting alarms during transverse movement, causing the machine tool to malfunction. Furthermore, the replacement and maintenance costs of imported machine tools are high, and domestic spare parts are difficult to purchase.
A device was designed to deactivate the internal milling center frame torsion alarm. By installing a hydraulic cylinder and a traction mechanism on the center frame, the principle of three points forming a surface is used to ensure that the center frame is subjected to uniform force when it moves laterally on the guide rail, thus ensuring stability.
This system enables smooth sliding of the center frame on the machine tool guide rail, avoids twisting alarms, reduces maintenance and replacement costs, and improves equipment reliability and ease of maintenance.
Smart Images
Figure CN224488505U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically a device for activating the alarm for internal milling center support torsion. Background Technology
[0002] In the milling process of crankshaft main journals and connecting rod journals, the function of the internal milling center rest is to clamp adjacent main journals being machined while milling them, preventing crankshaft vibration and bending deformation. After internal milling of one main journal and connecting rod journal, the center rest's V-shaped jaws release, move to another adjacent main journal, and clamp it, then milling continues. The center rest's skip distance is equal to the center distance between adjacent crankshaft main journals.
[0003] The sliding of the center rest on the guide rail is powered by the slide table. When the center rest moves laterally, the V-shaped chucks of the center rest release and move away from the main journal, meaning that the crankshaft does not interfere with the lateral movement of the center rest.
[0004] Currently, due to the age of the imported internal milling machines used, the internal milling center rest frequently experiences torsion alarms during transverse movement, preventing normal operation. Analysis of the existing center rest structure reveals that the lower end of the center rest has two guide rail grooves, which are slidably or locked to the guide rails of the machine tool bed. Specifically, when the machine tool is machining a crankshaft, the center rest is locked to the guide rails; when the machine tool is not machining a crankshaft and the center rest needs to be shifted to clamp the crankshaft main journal, the center rest is slidably connected to the guide rails.
[0005] The center rest is erected on the machine tool by two guide rails. Between the two guide rails below the center rest is a traction mechanism. A hydraulic cylinder is located directly above the traction mechanism. By clamping the connecting plate at the square hole of the center rest, the cylinder, together with the traction mechanism, pulls the center rest to a stop, thus achieving the center rest's repositioning. If the center rest cannot move laterally normally, triggering a torsion alarm during lateral movement, the machine tool will malfunction. This is because the force driving the entire center rest forward by the traction mechanism is unevenly distributed on the machine tool guide rails. Furthermore, due to the age of the machine tool and wear on the guide rails, the traction force at the two guide rails becomes biased.
[0006] In summary, the existing center frame has the following shortcomings:
[0007] 1. The center frame is aging, and there are risks of wear, corrosion, and jamming in various parts.
[0008] 2. The large area of the center frame can easily cause the direction of the traction force to deviate from the direction of the guide rail.
[0009] 3. The center frame has thin walls and the two guide rail grooves are very short, which requires high precision in the sliding fit between the center frame and the guide rails.
[0010] 4. Machine tools are expensive. If the center frame malfunctions, purchasing an imported machine tool again will result in very high production costs.
[0011] 5. Key components for imported machine tools cannot be purchased domestically, making replacement and repair inconvenient, time-consuming, and expensive. Summary of the Invention
[0012] To overcome the shortcomings of the existing technology, the purpose of this invention is to provide a device for relieving the internal milling center support torsion alarm, so as to achieve smooth and reliable sliding of the center support on the machine tool bed guide rail.
[0013] To achieve the above-mentioned objectives, the slide table of the device for relieving the internal milling center frame torsion alarm is located on the left side of the center frame and is slidably connected to the guide rails arranged horizontally parallel to the machine bed. The connecting rod is fixed to the right end of the slide table, and the frame is fixedly connected to the upper part of the slide table. The connecting plate is installed on the right end of the frame. A through hole for the piston rod of the second hydraulic cylinder is drilled at the lower right end of the center frame. The second hydraulic cylinder is installed at the lower right end of the center frame. A guide hole for sliding cooperation with the connecting rod is drilled on the center frame near the second hydraulic cylinder. The traction mechanism is located between the guide rail groove 1 and the guide rail groove 2 and is connected to the left end of the slide table. Above the traction mechanism, on the upper part of the center frame, the first hydraulic cylinder is installed vertically downwards, and its piston rod can directly pass into the square hole of the center frame.
[0014] Furthermore, the center of symmetry of the hydraulic cylinder two mounted on the central frame forms a right-angled triangle with the center of the traction mechanism and the center of the hydraulic cylinder one.
[0015] Furthermore, one end of the connecting rod is a screw for connecting the connecting rod to the slide, and the other end is a light rod. The light rod slides in conjunction with the guide hole on the central frame. The front end of the light rod is provided with a chamfer for guiding the light rod when it is inserted into the guide hole. An annular groove is provided in the middle part of the light rod for the piston rod of the second cylinder to hold the connecting rod. A flat surface is also provided in the middle part of the light rod to clamp the connecting rod with a wrench and mount it on the slide.
[0016] Furthermore, the oil inlet pipes of the three-way valves 1 and 2 of the hydraulic cylinder 1 and hydraulic cylinder 2 are connected to the oil tank. One branch of the oil inlet pipe of the three-way valve 1 is connected to the oil inlet pipe 1 of the hydraulic cylinder 1, and the other branch of the oil inlet pipe is connected to the oil inlet pipe 2 of the hydraulic cylinder 2. One branch of the oil outlet pipe of the three-way valve 2 is connected to the oil outlet pipe 1 of the hydraulic cylinder 1, and the other branch of the oil outlet pipe is connected to the oil outlet pipe 2 of the hydraulic cylinder 2.
[0017] Furthermore, the center height of the connecting rod on the slide is consistent with the center height of the second oil cylinder, and the center height of the first connecting plate on the frame matches the height of the square hole on the central frame.
[0018] Furthermore, the front end of the piston rod of the second cylinder is a conical structure that facilitates locking into the annular groove of the connecting rod.
[0019] Furthermore, the transverse servo motor of the traction mechanism is fixed to the bed through the motor base, and the transverse servo motor serves as a transmission source to provide power to the traction mechanism; the transverse lead screw is connected to the transverse servo motor, and the slide nut installed in the slide table engages with the transverse lead screw through threads.
[0020] Furthermore, the central frame is composed of a front-end cylinder, a rear-end cylinder, a second piston rod, a V-shaped claw, a connecting rod, a third piston rod, and a second connecting plate. The front-end cylinder and the rear-end cylinder are fixed at the front and rear ends of the central frame, respectively. The second piston rod of the rear-end cylinder is fixedly connected to the connecting rod through the second connecting plate. The connecting rod is connected to the rear-end V-shaped claw. The front-end cylinder is connected to the V-shaped claw through the third piston rod.
[0021] Furthermore, the slide table comprises a milling head box, a cutter head, a cutter head motor, a vertical servo motor, a vertical reducer, a vertical lead screw, a vertical lead screw nut, a vertical servo motor, a vertical reducer, a vertical lead screw, and a vertical lead screw nut; the vertical servo motor is fixed to the machine bed, and the vertical servo motor is connected to the vertical lead screw via the vertical reducer, and the vertical lead screw meshes with the vertical lead screw nut fixed in the slide table via a thread; the vertical servo motor is fixed to the machine bed, and the vertical servo motor is connected to the vertical lead screw via the vertical reducer, and the vertical lead screw meshes with the vertical lead screw nut fixed in the slide table.
[0022] Compared with the prior art, when the center frame moves laterally, the slide table drives the connecting rod and the connecting plate to move horizontally. When the connecting rod is inserted into the guide hole, the piston rod presses the connecting rod tightly, and the connecting plate is inserted into the square hole. The piston rod of the hydraulic cylinder presses the connecting plate against the bottom of the square hole. The traction mechanism drives the center frame to move laterally through the slide table. Since the center frame has three points that can be subjected to traction force, and the three points form a plane, the plane can stabilize the lateral movement of the center frame and effectively maintain parallel traction force between the center frame and the guide rail. This overcomes the problem of uneven force distribution on the machine tool guide rail caused by the previous method of driving the entire center frame to move laterally by two traction forces. Attached Figure Description
[0023] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:
[0024] Figure 1 This is the front view of the central frame of this utility model.
[0025] Figure 2 for Figure 1 The left view.
[0026] Figure 3 for Figure 1 A magnified view of part of T.
[0027] Figure 4 This is a simplified diagram of the structure of the hydraulic cylinder 2 tightening the connecting rod when the central frame of this utility model moves laterally.
[0028] Figure 5 for Figure 2 A magnified view of Q.
[0029] Figure 6 for Figure 5 A simplified structural diagram of the central frame during lateral movement.
[0030] Figure 7 for Figure 1 A simplified structural diagram of the traction mechanism.
[0031] Figure 8 for Figure 1 Enlarged diagram L of the central frame clamping and loosening structure.
[0032] Figure 9 for Figure 2 A simplified structural diagram of the slide table.
[0033] In the diagram: 1. Center frame; 2. V-shaped chuck; 3. Spindle journal; 4. Guide rail groove one; 5. Square hole; 6. Hydraulic cylinder one; 7. Oil inlet pipe one; 8. Oil outlet pipe one; 9. Traction mechanism; 10. Guide rail groove two; 11. T-junction one; 12. T-junction two; 13. Oil outlet pipe two; 14. Hydraulic cylinder two; 15. Oil inlet pipe two; 16. Guide rail; 17. Slide table; 18. Frame; 19. Connecting rod; 20. Connecting plate one; 21. Crankshaft; 22. Bed; 23. Through hole; 24. Piston rod one; 25. Bolt; 26. Screw; 27. Plane; 28. Annular groove; 29. Smooth 30. Chamfer; 31. Guide hole; 32. Horizontal servo motor; 33. Horizontal lead screw; 34. Slide table nut; 35. Motor base; 36. Rear end cylinder; 37. Front end cylinder; 38. Piston rod three; 39. Vertical servo motor; 40. Vertical reducer; 41. Vertical lead screw; 42. Vertical nut; 43. Vertical lead screw; 44. Vertical reducer; 45. Vertical servo motor; 46. Vertical nut; 47. Milling head box; 48. Cutter head; 49. Cutter head motor; 50. Piston rod two; 51. Connecting rod; 52. Connecting plate two. Detailed Implementation
[0034] To make the invention's objectives, technical solutions, and advantages clearer, the present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of protection of the present invention.
[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the center frame 1 of the device for relieving the torsion alarm of the internal milling center frame of this utility model is a large, nearly rectangular structure when viewed from the front, and has a thin-walled shape when viewed from the side. The guide rail groove 1-4 and guide rail groove 2-10 at the bottom of the center frame 1 slide in contact with the transversely parallel guide rails 16 on the bed 22. Therefore, the contact area between the guide rail groove 1-4 and guide rail groove 2-10 of the center frame 1 and the guide rails 16 of the bed 22 is very limited. In order for the center frame 1 to move normally on the guide rails 16, the fitting accuracy of the guide rail groove 1-4 and guide rail groove 2-10 with the guide rails 16 is very strict. If there are defects such as rust, wear, or jamming, the torsion alarm will easily occur during the transverse movement of the center frame 1. A pair of V-shaped chucks 2 on the center frame 1 are used to clamp the main journal 3 when machining the crankshaft 21 to ensure the stability of the crankshaft 21 during the machining process. When the center frame 1 moves laterally, the V-shaped chuck 2 releases the main shaft journal 3 to ensure that the center frame 1 does not interfere with the crankshaft 21 during the lateral movement.
[0036] The slide table 17 is the power source for the transverse movement of the traction center frame 1. Located on the left side of the center frame 1, the slide table 17 is slidably connected to the guide rails 16 arranged horizontally parallel to the bed 22. The connecting rod 19 is fixed to the right end of the slide table 17. The frame 18 is fixedly connected to the upper part of the slide table 17, and the connecting plate 20 is mounted on the right end of the frame 18. The hydraulic cylinder 14 is installed below the right end of the center frame 1, on the side away from the operator. The line connecting the symmetrical center of the hydraulic cylinder 14 on the center frame 1 and the center of the traction mechanism 9 and the hydraulic cylinder 6 forms a right-angled triangle (e.g., ...). Figure 1(As shown) A through hole 23 is drilled below the right end of the center frame 1, corresponding to the position of the second cylinder 14, for the piston rod 24 of the second cylinder 14 to pass through. The front end of the piston rod 24 of the second cylinder 14 has a conical structure, which facilitates it to be locked in the annular groove 28 of the connecting rod 19. Threaded holes are drilled around the through hole 23, and the second cylinder 14 is fixed to the right end face of the center frame 1 with four bolts 25. A guide hole 31 is drilled on the center frame 1 near the second cylinder 14, which slides with the connecting rod 19. The guide hole 31 is positioned so that the piston rod 24 of the second cylinder 14 can be inserted into the guide hole 31 when it is extended. When the center frame 1 and the guide rail 1 are aligned... When 6 is in the locked state, that is, the two V-shaped chucks 2 clamp the main journal 3 of the crankshaft 21, the piston rod 24 of the second cylinder 14 is in the retracted state, and the connecting rod 19 has not yet contacted the guide hole 31 of the center frame 1; the traction mechanism 9 is located between the guide rail groove 4 and the guide rail groove 10, and is connected to the left end of the slide table 17; directly above the traction mechanism 9, on the upper part of the center frame 1, the first cylinder 6 is installed vertically downward, and its piston rod can directly pass into the square hole 5 of the center frame 1; the center height of the connecting rod 19 on the slide table 17 is consistent with the center height of the second cylinder 14, and the center height of the connecting plate 20 on the frame 18 matches the height of the square hole 5 on the center frame 1.
[0037] When the center frame 1 moves laterally, the traction mechanism 9 drives the slide table 17 to move laterally along the guide rail 16 toward the center frame 1, and drives the connecting rod 19 and the connecting plate 20 to move synchronously. When the connecting rod 19 is inserted into the guide hole 31 and slides into the guide hole 31 until the annular groove 28 is aligned with the through hole 23, the slide table 17 stops moving laterally. Hydraulic oil is introduced into the oil inlet pipes 7 and 15 of the first cylinder 6 and the second cylinder 14, respectively. The piston rod 24 of the second cylinder 14 extends through the through hole 23 on the center frame 1. The piston rod 24, with a conical structure at the front end, will... Connecting rod 19 is tightened, and simultaneously, connecting plate 20 is inserted into square hole 5. The front end of piston rod of cylinder 6 presses connecting plate 20 against the bottom of square hole 5. Slide 17 is fixedly connected to center frame 1. Front cylinder 37 and rear cylinder 36 respectively drive two V-shaped chucks 2 to release the main journal 3 of crankshaft 21. Center frame 1 and guide rail 16 are released from locking and are in a sliding fit state. Traction mechanism 9 can smoothly drive center frame 1 to perform a skip-shift lateral movement through slide 17, moving center frame 1 to another adjacent main journal 3 to be processed. Because center frame 1 is subjected to traction from three directions—traction mechanism 9, cylinder 6, and cylinder 14—its lateral movement can be completely smooth and reliable.
[0038] Preferably, one end of the connecting rod 19 is a screw 26 for connecting the connecting rod 19 to the slide table 17, and the other end is a smooth rod. The smooth rod slides in conjunction with the guide hole 31 on the center frame 1. The front end of the smooth rod has a chamfer 30 for guiding the smooth rod when it is inserted into the guide hole 31. An annular groove 28 is provided in the middle of the smooth rod for the piston rod 24 of the second cylinder 14 to hold the connecting rod 19. The annular groove 28 can prevent the piston rod 24 from slipping on the smooth rod. A flat surface 27 is also provided in the middle of the smooth rod. By clamping the flat surface 27 with a wrench, the connecting rod 19 can be tightened and installed on the slide table 17, and the connecting rod 19 is aligned with the guide hole 31. The size, shape and mechanical properties of the connecting rod 19 can meet the needs of the traction center frame 1.
[0039] Preferably, the oil inlet pipes of the three-way valves 11 and 22 of the hydraulic cylinders 1-6 and 2-14 are connected to the oil tank. One branch of the three-way valve 11 is connected to the oil inlet pipe 7 of the hydraulic cylinder 1-6, and the other branch is connected to the oil inlet pipe 25 of the hydraulic cylinder 2-14. One branch of the three-way valve 22 is connected to the oil outlet pipe 8 of the hydraulic cylinder 1-6, and the other branch is connected to the oil outlet pipe 23 of the hydraulic cylinder 2-14. When oil enters the hydraulic cylinders 1-6 and 2-14, the pistons simultaneously push the piston rods of the hydraulic cylinders 1-6 and 2-14 forward, respectively pressing against the connecting plate 20 and the connecting rod 19. At this time, the slide table 17 can drive the center frame 1 to move laterally by skipping gears. Conversely, when the piston rods of the hydraulic cylinders 1-4 and 2-14 retract, and the slide table 17 drives the connecting plate 20 and the connecting rod 19 to retract, the center frame 1 cannot move laterally because it is not under traction.
[0040] Preferably, the transverse servo motor 32 of the traction mechanism 9 is fixed to the bed 22 via a motor base 35, and the transverse servo motor 32 serves as a transmission source to provide power to the traction mechanism 9. The transverse lead screw 33 is connected to the transverse servo motor 32, and the slide nut 34, installed in the slide table 17, engages with the transverse lead screw 33 via threads. When the transverse servo motor 32 operates, it directly drives the transverse lead screw 33 to rotate synchronously. Since the slide nut 34 and the transverse lead screw 33 are engaged via threads, the rotational motion of the transverse lead screw 33 is converted into the linear motion of the slide nut 34, thereby realizing the traction function of the traction mechanism 9 on the slide table 17 through the movement of the slide nut 34.
[0041] Preferably, the central frame 1 mainly consists of a rear end cylinder 36, a piston rod 38, a front end cylinder 37, a V-shaped claw 2, a piston rod 50, a connecting rod 51, and a connecting plate 52. The front end cylinder 37 and the rear end cylinder 36 are fixed on both sides of the central frame 1. The piston rod 50 of the rear end cylinder 36 is fixedly connected to the connecting rod 51 through the connecting plate 52. The connecting rod 51 is directly connected to the V-shaped claw 2. The front end cylinder 37 is connected to the V-shaped claw 2 through the piston rod 38.
[0042] The operation process of center support 1 clamping crankshaft 21 is as follows: When it is necessary to clamp crankshaft 21, the front cylinder 37 is activated, and the piston rod 38 of the front cylinder 37 extends, moving the V-shaped jaws 2 directly from the front end towards the main journal 3 of crankshaft 21. The piston rod 50 of the rear cylinder 36 extends from the rear end, moving the V-shaped jaws 2 towards the main journal 3 of crankshaft 21. The extension movements of the piston rod 38 of the front cylinder 37 and the piston rod 50 of the rear cylinder 36 are relative. The two V-shaped jaws 2 clamp the main journal 3 of crankshaft 21 until it is fully clamped.
[0043] The operation process of the center support 1 to release the crankshaft 21: After the milling of a main journal 3 and a connecting rod journal is completed, the crankshaft 21 needs to be released. At this time, the piston rod 38 of the front cylinder 37 can be controlled to retract, and the piston rod 50 of the rear cylinder 36 can be retracted, so that the two V-shaped chucks 2 move outward synchronously. The two V-shaped chucks 2 release the main journal 3 of the crankshaft 21, that is, release the clamping on the main journal 3 of the crankshaft 21.
[0044] Preferably, the slide table 17 mainly consists of a milling head box 47, a cutter head 48, a cutter head motor 49, a vertical servo motor 39, a vertical reducer 40, a vertical lead screw 41, a vertical lead screw nut 42, a vertical servo motor 45, a vertical reducer 44, a vertical lead screw 43, and a vertical lead screw nut 46. The vertical servo motor 39 is fixed on the bed 22 and is connected to the vertical lead screw 41 via the vertical reducer 40. The vertical lead screw 41 is threaded into the vertical lead screw nut 42 fixed in the slide table 17. The vertical servo motor 45 is fixed on the bed 22 and is connected to the vertical lead screw 43 via the vertical reducer 44. The vertical lead screw 43 is threaded into the vertical lead screw nut 46 fixed in the slide table 17. After receiving a system command, the cutter head motor 49 starts and drives the cutter head 48 to rotate through the internal transmission of the milling head box 47. The vertical servo motors 39 and 45, after receiving system commands, start and output their speeds, which are then reduced by the vertical reducer 40 and vertical reducer 44 respectively, driving the vertical lead screw 41 and vertical lead screw 43 to rotate. The vertical lead screw nut 41 and vertical lead screw nut 46 are connected to the milling head box 47, converting the rotational motion of the vertical lead screw 41 and vertical lead screw 43 into radial feed of the milling head box 47 in the vertical and vertical directions, thus enabling the cutter head 48 to cut the radial dimension of the crankshaft 21. When other positions of the crankshaft 21 need to be machined, the transverse servo motor 32 drives the transverse lead screw 33 to rotate, driving the slide table 17 to move in the transverse direction, thereby enabling the machining of other positions of the crankshaft 21.
[0045] Machining process for milling crankshaft 21 main journal 3 and connecting rod journal on an internal milling machine:
[0046] 1. Place the large and small ends of the crankshaft 21 on the machine tool chuck;
[0047] 2. Decoupling the center frame 1: The traction mechanism 9 drives the slide table 17 to move laterally along the guide rail 16 toward the center frame 1, and drives the connecting rod 19 and the connecting plate 20 to move synchronously. When the connecting rod 19 is inserted into the guide hole 31, until the annular groove 28 is aligned with the through hole 23, the slide table 17 stops moving laterally. The oil inlet pipes 7 and 15 of the first cylinder 6 and the second cylinder 14 respectively enter hydraulic oil. The piston rod 24 of the second cylinder 14 passes through the through hole 23 on the center frame 1 and presses the connecting rod 19 tightly. At the same time, the connecting plate 20 is inserted into the square hole 5. The front end of the piston rod of the first cylinder 6 presses the connecting plate 20 against the bottom of the square hole 5. The slide table 17 is fixedly connected to the center frame 1. The traction mechanism 9 drives the center frame 1 to move smoothly to the adjacent spindle 3 of the spindle 3 to be processed through the slide table 17.
[0048] 3. Clamping the main journal 3 of crankshaft 21: Start the front cylinder 37, the piston rod 38 of the front cylinder 37 extends, and moves the V-shaped chuck 2 directly from the front end toward the main journal 3 of crankshaft 21. The piston rod 50 of the rear cylinder 36 extends and moves synchronously from the rear end toward the main journal 3 of crankshaft 21. The extension movements of the piston rod 38 of the front cylinder 37 and the piston rod 50 of the rear cylinder 36 are relative. The two V-shaped chucks 2 clamp the main journal 3 of crankshaft 21.
[0049] 3. After receiving the system command, the cutter head motor 49 starts, and the cutter heads 48 on both sides of the machine tool simultaneously process a spindle journal and a connecting rod journal;
[0050] 4. After the milling of a main journal 3 and a connecting rod journal is completed, the crankshaft 21 needs to be released. At this time, the piston rod 38 of the front cylinder 37 and the piston rod 50 of the rear cylinder 36 can be controlled to retract, so that the two V-shaped chucks 2 move outward synchronously. The two V-shaped chucks 2 release the main journal 3 of the crankshaft 21, that is, release the clamping on the main journal 3 of the crankshaft 21.
[0051] 5. Repeat the above actions of decoupling center frame 1 and clamping crankshaft 21 main journal 3, and so on to process the remaining journals;
[0052] 6. The slide table 17 moves the center frame 1 back to its original position, and the machining is completed.
[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A device for activating the alarm for torsion of the internal milling center support, characterized in that: The slide (17) is located on the left side of the center frame (1) and is slidably connected to the guide rails (16) arranged horizontally parallel to the bed (22). The connecting rod (19) is fixed to the right end of the slide (17). The frame (18) is fixedly connected to the upper part of the slide (17). The connecting plate (20) is installed on the right end of the frame (18). A through hole (23) is drilled below the right end of the center frame (1) for the piston rod (24) of the second cylinder (14) to pass through. The second cylinder (14) is installed in the center frame (17). Below the right end of the frame (1), near the second oil cylinder (14), there is a guide hole (31) drilled on the frame (1) that slides with the connecting rod (19); the traction mechanism (9) is located between the first guide rail groove (4) and the second guide rail groove (10), and is connected to the left end of the slide table (17); directly above the traction mechanism (9), on the upper part of the frame (1), the first oil cylinder (6) is installed vertically downward, and its piston rod can directly pass into the square hole (5) of the frame (1).
2. The device for relieving the internal milling center support torsion alarm according to claim 1, characterized in that: The center of symmetry of the second hydraulic cylinder (14) mounted on the central frame (1) forms a right triangle with the center of the traction mechanism (9) and the center of the first hydraulic cylinder (6).
3. The device for relieving the internal milling center support torsion alarm according to claim 1, characterized in that: One end of the connecting rod (19) is a screw (26) for connecting the connecting rod (19) and the slide (17), and the other end is a light rod. The light rod is slidably engaged with the guide hole (31) on the center frame (1). The front end of the light rod is provided with a chamfer (30) for guiding the light rod when it is inserted into the guide hole (31). In the middle part of the light rod, there is an annular groove (28) for the piston rod (24) of the second cylinder (14) to hold the connecting rod (19). In the middle part of the light rod, there is also a flat surface (27) for clamping the connecting rod (19) with a wrench and mounting it on the slide (17).
4. The device for relieving the internal milling center support torsion alarm according to claim 1, characterized in that: The oil inlet pipes of the three-way valve one (11) and three-way valve two (12) of the oil cylinder one (6) and oil cylinder two (14) are connected to the oil tank. One branch of the three-way valve one (11) is connected to the oil inlet pipe one (7) of the oil cylinder one (6), and the other branch is connected to the oil inlet pipe two (15) of the oil cylinder two (14). One branch of the three-way valve two (12) is connected to the oil outlet pipe one (8) of the oil cylinder one (6), and the other branch is connected to the oil outlet pipe two (13) of the oil cylinder two (14).
5. The device for relieving the internal milling center support torsion alarm according to claim 1, characterized in that: The center height of the connecting rod (19) on the slide (17) is consistent with the center height of the second oil cylinder (14), and the center height of the connecting plate (20) on the frame (18) matches the height of the square hole (5) on the center frame (1).
6. The device for relieving the internal milling center support torsion alarm according to claim 1, characterized in that: The piston rod (24) of the second cylinder (14) has a conical structure at the front end, which is convenient to be locked in the annular groove (28) of the connecting rod (19).
7. The device for relieving the internal milling center support torsion alarm according to claim 1, characterized in that: The transverse servo motor (32) of the traction mechanism (9) is fixed to the bed (22) via the motor base (35). The transverse servo motor (32) serves as a transmission source to provide power transmission to the traction mechanism (9). The transverse lead screw (33) is connected to the transverse servo motor (32), and the slide nut (34) installed in the slide (17) meshes with the transverse lead screw (33) via threads.
8. The device for relieving the internal milling center support torsion alarm according to claim 1, characterized in that: The central frame (1) consists of a rear end cylinder (36), piston rod three (38), front end cylinder (37), V-shaped claw (2), piston rod two (50), connecting rod (51), and connecting plate two (52). The front end cylinder (37) and the rear end cylinder (36) are fixed at both ends of the central frame (1). The piston rod two (50) of the rear end cylinder (36) is fixedly connected to the connecting rod (51) through the connecting plate two (52). The connecting rod (51) is connected to the V-shaped claw (2). The front end cylinder (37) is connected to the V-shaped claw (2) through piston rod three (38).
9. The device for relieving the internal milling center support torsion alarm according to claim 1, characterized in that: The slide (17) is composed of a milling head box (47), a cutter head (48), a cutter head motor (49), a vertical servo motor (39), a vertical reducer (40), a vertical lead screw (41), a vertical lead screw nut (42), a vertical servo motor (45), a vertical reducer (44), a vertical lead screw (43), and a vertical lead screw nut (46); the vertical servo motor (39) is fixed on the bed (22), and the vertical servo motor (39) The vertical reducer (40) is connected to the vertical lead screw (41), and the vertical lead screw (41) is threaded into the vertical nut (42) fixed in the slide (17); the vertical servo motor (45) is fixed on the bed (22), and the vertical servo motor (45) is connected to the vertical lead screw (43) via the vertical reducer (44), and the vertical lead screw (43) is threaded into the vertical nut (46) fixed in the slide (17).