Milling machine for machining engine crankshaft

Abstract

The engine crankshaft machining milling machine comprises a machining milling machine shell, a machining table is arranged in the machining milling machine shell, and a crankshaft pushing assembly is arranged at the position, close to a machining milling machine shell protection opening, of the top of the machining table; an opening is formed in the inner side of the top of the machining table, and a calibration assembly is arranged in the opening and located at the bottom in the machining milling machine shell. Crankshaft clamp assemblies are erected on the two sides of the opening in the top of the machining table. A turning and milling cutter moving part is mechanically linked to the crankshaft clamp assembly, rolling wheels are arranged at the bottom of the turning and milling cutter moving part, the rolling wheels are installed on a third rail, and the third rail is fixed to the inner side of the inner bottom wall of the machining milling machine shell; the crankshaft clamp assembly comprises column bases installed on the two sides of an opening in the top of the machining table, first guide rod bases are arranged on the two sides of the top of each column base, and a first guide rod and a lead screw transversely penetrate through the position between the corresponding first guide rod bases. The turning and milling device has the beneficial effects of being suitable for crankshaft connecting rods of various sizes and improving turning and milling accuracy.

Description

A milling machine for machining engine crankshafts Technical Field

[0001] This invention relates to the field of milling and turning machine tools, and more specifically, to a milling machine for machining engine crankshafts. Background Technology

[0002] The crankshaft is the most important component in an engine. It bears the force transmitted from the connecting rod and converts it into torque, which is then output through the crankshaft to drive other accessories on the engine. The crankshaft is subjected to the combined effects of centrifugal force from the rotating mass, periodically changing gas inertial force, and reciprocating inertial force, resulting in bending and torsional loads. Therefore, the crankshaft requires sufficient strength and rigidity, and the journal surface must be wear-resistant, have uniform operation, and good balance. Turning, milling, planing, and grinding are the four basic machining methods and are important parts processing methods. They mainly complete the machining of parts so that they can be used for the assembly of machinery and equipment. These include turning, milling, planing, and grinding. Different parts require different machining methods. For example, shaft parts generally only require turning, but some parts require two or more of these machining methods to complete the part's machining.

[0003] Currently, in the production process of existing crankshafts, the crankshaft is forged as a whole. The connecting rods cannot be forged to the set size in one go. Therefore, they are usually forged to a rougher size, and then the specified size is precisely milled by a turning and milling machine. However, since the multiple connecting rods of the crankshaft are not on the same axis, the crankshaft cannot be milled in the rotating state during turning and milling. This leads to a decrease in accuracy and is prone to vibration during the machining process. The vibration directly acts on the wall of the turning and milling machine, reducing the service life of the machine. Excessive vibration will also affect the accuracy of the machining. Summary of the Invention

[0004] The technical objective of this invention is to address the above-mentioned shortcomings by providing a milling machine for machining engine crankshafts, thereby resolving the aforementioned problems.

[0005] The technical solution of this invention is implemented as follows: A milling machine for machining engine crankshafts includes a milling machine housing, a machining table inside the milling machine housing, and a crankshaft pushing assembly located on the top of the machining table near the protective opening of the milling machine housing; an opening is provided on the inner side of the top of the machining table, and a calibration assembly is located inside the opening, situated at the bottom of the milling machine housing; crankshaft clamping assemblies are mounted on both sides of the opening on the top of the machining table; a milling cutter moving part is mechanically linked to the crankshaft clamping assembly, and rollers are provided at the bottom of the milling cutter moving part, the rollers being mounted on a track three fixed inside the milling machine housing. The inner side of the bottom wall; the crankshaft fixture assembly includes a column base installed on both sides of the opening at the top of the machining table. Each column base has a guide rod seat on both sides of its top. A guide rod and a lead screw are respectively arranged transversely between a pair of guide rod seats. One end of the lead screw is connected to a motor installed on one side inside the machining milling machine housing. A rotating fixture is provided at the center of the upper part of the column base. One end of the rotating fixture is connected to a motor. The motor is installed on one side inside the machining milling machine housing. A pneumatic push part is provided on the side of the column base away from the motor. A positioning part is provided at the center of the top of the column base. The milling cutter moving part is mechanically linked to the lead screw.

[0006] Preferably, the crankshaft pushing assembly includes a set of upright plates, which are installed on both sides of the top of the machining table near the protective opening of the milling machine housing. The upper part of the upright plates is provided with guide grooves, and guide rods with sliding fit are provided in the guide grooves. Rotary plates are provided on the corresponding sides of the guide rods. A shaft is provided on the side end of the rotating plate away from the guide rods. Side plates are fitted on both sides of the shaft. Slide plates are provided at the bottom of the side plates. The bottom of slide plates is slidably connected to rails. Rails are fixed on both sides of the top of the machining table near the middle. A connecting plate is provided between slide plates. A threaded rod with threaded fit is inserted on one side of the connecting plate. A motor is provided on the side of the threaded rod away from the opening. Motor is fixed on the top of the machining table. A fixing plate is provided at the other end of the threaded rod. The fixing plate is fixed on the top of the machining table. A transition fixing component is fitted on the middle of the shaft. A rotating support plate is provided between the tops of the two transition fixing components.

[0007] Preferably, a guide rod 2 is inserted on the side of the connecting plate away from the threaded rod, and guide rod 2 is provided at both ends of the guide rod 2, and the guide rod 2 is fixed to the top of the processing table.

[0008] Preferably, the calibration assembly includes a movable plate, with telescopic columns 1 on both sides of the opening at the top of the movable plate, and a matching telescopic column 2 inside the telescopic column 1. The telescopic column 2 passes through the telescopic column 1, and a top plate is horizontally inserted between the tops of the telescopic columns 2. A pneumatic rod 1 is located at the bottom center of the top plate, and a matching cylinder 1 is located below the pneumatic rod. A cylinder seat is located at the bottom of the cylinder 1, and the cylinder seat is fixed to the inner center of the top of the movable plate. A calibration support is located at the top center of the top plate, and a gear component is located at the top center of the movable plate.

[0009] Preferably, the gear component includes a shaft seat installed at the center of both sides of the top of the movable plate, a cylinder is provided between the top of the corresponding sides of the shaft seat, a transverse shaft is provided inside the cylinder, the transverse shaft passes through the shaft seat and gears are sleeved at both ends; the telescopic column one has an arc groove on the side corresponding to the gear; the lower part of the surface of the telescopic column two has a side gear tooth that meshes with the gear on the side corresponding to the arc groove.

[0010] Preferably, the calibration support includes an L-shaped seat fixed to the top of the top plate. A fixing block is provided in the groove at the top of the L-shaped seat. An inner shaft is inserted on both sides of the fixing block near the upper part of the protruding side of the L-shaped seat. An arm is provided at both ends of the inner shaft. An arm is provided on the inner side of the other end of the arm. An arm is movably connected to the side of the calibration frame on the other side. An arm is provided on the inner side of the arm near the middle. One end of the arm is movably connected to one side of the calibration frame. An arm is provided on the outer side of the other end of the arm. An arm is movably connected to the lower side of the side of the fixing block on the other side. A micro-driver is connected to one end of the inner shaft. The micro-driver is mounted on the side of the L-shaped seat through a mounting base.

[0011] Preferably, the calibration frame has a side groove 1 on both sides near the L-shaped seat protrusion, and the ends of the arms 2 and 4 are movably connected to one side wall of the side groove; the top of the calibration frame and the side away from the L-shaped seat protrusion are both provided with calibration grooves; the upper part of the side of the fixing block away from the L-shaped seat protrusion is provided with side groove 2; the top of the L-shaped seat is provided with a V-shaped positioning groove on the side of the protrusion away from the calibration frame, and the calibration frame is provided with a positioning slope on the side near the V-shaped positioning groove.

[0012] Preferably, the milling cutter moving part includes a cylinder three, the bottom of which is fixed on a roller. A matching air rod three is provided inside the cylinder three. The air rod three passes through the cylinder three and has a horizontal plate at its top. A milling machine is provided on the side of the horizontal plate away from the air rod three. A milling cutter head is provided at the bottom of the milling machine. A telescopic column three is provided at the bottom center of the horizontal plate. A matching telescopic column four is provided at the lower part of the telescopic column three. A threaded block that engages with the lead screw thread is provided at the bottom of the telescopic column four.

[0013] Preferably, the positioning part includes a protruding plate fixed at the center of the top of the column base. The protruding plate has a longitudinal cavity and a transverse cavity. A threaded hole is provided at the center of the top of the protruding plate corresponding to the longitudinal cavity. A threaded locking rod is provided in the threaded hole. The upper part of the threaded locking rod penetrates the top of the milling machine housing. A locking plate is provided at the lower part of the threaded locking rod. A locking hole matching the threaded locking rod is provided at the center of the top of the locking plate. The locking plate is located in the longitudinal cavity. A trapezoidal plate is provided in the transverse cavity. A V-groove is provided in the middle of the trapezoidal plate. A matching limiting rod is provided in the V-groove. One end of the limiting rod is fixed at the center of the side of the locking plate. A through hole is provided at the center of the upper part of the column base. An internally threaded cylinder that is threaded with the rotating fixture is provided in the through hole. A locking groove matching the locking plate is provided at the center of the top of the internally threaded cylinder.

[0014] Preferably, the pneumatic actuation unit includes a sliding plate 1 installed at the bottom of the inner side of the mounting column base, the bottom of the sliding plate 1 having a groove, and a matching track 1 installed in the groove, the track 1 being fixed to the inner side of the top of the machining table near the opening side; and a cylinder 2, the cylinder 2 being fixed to one side inside the outer shell of the machining milling machine, the cylinder 2 having a matching air rod 2, the air rod 2 passing through the cylinder 2, and the side of the air rod 2 away from the cylinder 2 being fixed at the lower center of the corresponding side of the column base.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. A crankshaft pushing assembly, a calibration assembly, a crankshaft clamping assembly, and a turning and milling cutter moving part are provided inside the milling machine housing. The crankshaft is pushed to the calibration assembly by the crankshaft pushing assembly. After the crankshaft falls onto the calibration assembly, the calibration assembly pushes the crankshaft into the crankshaft clamping assembly. The calibration support part of the calibration assembly is adjusted to make the calibration frame clamp the crankshaft connecting rod, and the crankshaft connecting rod is positioned and calibrated. Then, the position of the crankshaft clamping assembly is adjusted to process the crankshaft clamped below. It is suitable for crankshaft connecting rods of various sizes and improves the accuracy of turning and milling.

[0016] 2. By linking the milling cutter's moving part with the lead screw, the rotation of the lead screw can drive the milling cutter's moving part to move, allowing the milling machine to move left and right as needed during machining operations, increasing the flexibility of machining. Compared with the existing technology that moves directly through the track beam, this invention links the milling cutter with the crankshaft fixture, making the position adjustment process more stable and preventing slippage. The adjustment angle is smaller due to the influence of the thread structure, improving the accuracy of milling machining.

[0017] 3. After the rotating fixture on the crankshaft fixture assembly drives the crankshaft connecting rod held between them to rotate, the positioning part on the column seat abuts against the inner wall of the milling machine housing, so that the column seat and the inner wall of the milling machine housing always maintain a certain distance. This can greatly reduce the vibration force generated during the crankshaft connecting rod machining process from being directly applied to the milling machine housing, thereby improving the service life of the milling machine. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is an external perspective view of an embodiment of the present invention; Figure 2 is a schematic diagram of a machining table structure according to an embodiment of the present invention; Figure 3 is a schematic diagram of a crankshaft pushing assembly structure according to an embodiment of the present invention; Figure 4 is a schematic diagram of a calibration assembly structure according to an embodiment of the present invention; Figure 5 is a schematic diagram of the connection structure between the crankshaft clamp assembly and the milling cutter moving part according to an embodiment of the present invention; Figure 6 is a schematic diagram of the positioning part structure according to an embodiment of the present invention; Figure 7 is a schematic diagram of the internal structure of the convex plate according to an embodiment of the present invention; Figure 8 is a schematic diagram of the connection structure between the calibration support part and the top plate according to an embodiment of the present invention; Figure 9 is a schematic diagram of the working state structure of the calibration support part according to an embodiment of the present invention; Figure 10 is a schematic diagram of the fixing block structure according to an embodiment of the present invention.

[0020] In the diagram: 1. Milling machine housing; 2. Machining table; 3. Crankshaft push assembly; 4. Opening; 5. Calibration assembly; 6. Crankshaft fixture assembly; 7. Milling cutter moving part; 8. Column base; 9. Guide rod seat one; 10. Guide rod one; 11. Lead screw; 12. Motor two; 13. Rotary fixture; 14. Motor one; 15. Vertical plate; 16. Guide groove; 17. Guide rail; 18. Rotary plate; 19. Side plate 20. Slide plate II; 21. Track II; 22. Connecting plate; 23. Threaded rod; 24. Motor III; 25. Fixing plate; 26. Adapter fixing part; 27. Transfer plate; 28. Guide rod II; 29. ​​Guide rod seat II; 30. Moving plate; 31. Telescopic column I; 32. Telescopic column II; 33. Top plate; 34. Gas spring I; 35. Gas cylinder I; 36. Gas cylinder seat; 37. Calibration support; 38. Shaft seat; 39. Cylinder; 40. Transverse shaft; 41. Gear; 42. Arc groove; 43. Side gear tooth; 44. L-shaped seat; 45. Arm 1; 46. Arm 2; 47. Calibration frame; 48. Arm 4; 49. Arm 3; 50. Fixing block; 51. Miniature actuator; 52. Side groove 1; 53. Calibration groove; 54. Side groove 2; 55. V-shaped positioning groove; 56. Cylinder 3; 57. Horizontal plate; 58. Milling and turning machine 59. Milling cutter head; 60. Telescopic column three; 61. Threaded block; 62. Convex plate; 63. Longitudinal cavity; 64. Transverse cavity; 65. Threaded hole; 66. Threaded locking rod; 67. Locking plate; 68. Trapezoidal plate; 69. V-groove; 70. Limiting rod; 71. Internal threaded cylinder; 72. Locking groove; 73. Slide plate one; 74. Rail one; 75. Cylinder two; 76. Pneumatic rod two; 77. Telescopic column four; 78. Pneumatic rod three. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] According to an embodiment of the present invention, as shown in Figures 1-10: the present invention provides a milling machine for machining engine crankshafts, including a milling machine housing 1, a machining table 2 disposed inside the milling machine housing 1, a crankshaft pushing assembly 3 disposed on the top of the machining table 2 near the protective opening of the milling machine housing 1; an opening 4 disposed on the inner side of the top of the machining table 2, a calibration assembly 5 disposed within the opening 4, the calibration assembly 5 being located at the bottom of the milling machine housing 1; a crankshaft clamping assembly 6 is mounted on both sides of the opening 4 on the top of the machining table 2; a milling cutter moving part 7 is mechanically linked to the crankshaft clamping assembly 6, a roller is disposed at the bottom of the milling cutter moving part 7, the roller is mounted on a track 3, the track 3 being fixed to the inner side of the bottom wall of the milling machine housing 1; the crankshaft clamping assembly... Component 6 includes column seats 8 mounted on both sides of the top opening 4 of the machining table 2. Guide rod seats 9 are provided on both sides of the top of each column seat 8. A guide rod 10 and a lead screw 11 are respectively arranged transversely between a pair of guide rod seats 19. One end of the lead screw 11 is connected to a motor 12 installed inside the machining milling machine housing 1. A rotating clamp 13 is provided at the center of the upper part of the column seat 8. Two rotating clamps 13 are provided at this location, as shown in Figure 5. The left rotating clamp 13 is connected to the motor 14 and rotates in its original position. The right rotating clamp 13 moves synchronously with the right column seat 8. The corresponding sides of the two rotating clamps 13 are clamping holes, and expansion rings and collision rings are provided inside the clamping holes. Under pressure, the mechanism expands, clamping and fixing the crankshaft connecting rod inserted inside. The threads on the surfaces of the left and right rotating clamps 13 are opposite, and the threads on the inner wall of the upper internal threaded cylinder 71 are also opposite, engaging with the threads on the corresponding rotating clamp 13 surfaces, causing the two internal threaded cylinders 71 to move synchronously to both sides. Limiting blocks are provided on both sides of the right rotating clamp 13. After the right column seat 8 moves to the left side to the left limiting block, it moves the right rotating clamp 13 to the left along with it under the push of the pneumatic pusher. This is suitable for shorter crankshaft connecting rods, and vice versa for longer crankshaft connecting rods. One end of one rotating clamp 13 is connected to a motor 14, which is mounted on the outside of the milling machine. On one side of the inner shell 1, away from the motor 14, the column base 8 is provided with a pneumatic pusher. The pneumatic pusher includes a sliding plate 73 installed on the bottom of the inner side of the column base 8. The bottom of the sliding plate 73 is provided with a groove, and a matching track 74 is provided in the groove. The track 74 is fixed on the inner side of the top of the machining table 2 near the opening 4. A cylinder 75 is fixed on one side of the inner shell 1 of the milling machine. A matching air rod 76 is provided in the cylinder 75. The air rod 76 passes through the cylinder 75. The side of the air rod 76 away from the cylinder 75 is fixed at the lower center of the corresponding side of the column base 8. A positioning part is provided at the top center of the column base 8. The milling cutter moving part 7 is mechanically linked with the lead screw 11.

[0024] The milling machine housing 1 is divided into left and right cavities, a middle cavity, and a lower cavity. The machining table 2 is located in the middle cavity. The crankshaft pushing assembly 3 is installed on the top of the machining table 2 near the protective opening. A milling machine protective cover is installed at the protective opening of the milling machine housing 1. During machining operations, the milling machine protective covers on both sides are closed. The crankshaft pushing assembly 3 is moved to the protective opening to facilitate the pushing of the crankshaft connecting rod. An opening is provided on the inner side of the machining table 2. A calibration assembly 5 is located below the opening, in the lower cavity. The calibration assembly 5 can move up and down and left and right, and its position can be adjusted as needed to calibrate the pushed crankshaft connecting rod to the appropriate position. The position is set and calibrated for positioning support; the crankshaft clamping assembly 6 is provided on the cross frame of the opening 4, which facilitates the cooperation between the crankshaft clamping assembly 6 and the calibration assembly 5. The crankshaft clamping assembly 6 is provided with a positioning part. When the rotating clamp 13 clamps the crankshaft connecting rod and rotates, the column seat 8 is always kept at a certain distance from the inner wall of the milling machine housing 1, that is, the inner wall of the middle cavity, so as to avoid the vibration motion generated during the processing being directly subjected to the milling machine housing 1, thereby increasing the stability during the processing; the milling cutter moving part 7 moves left and right with the lead screw 11, which facilitates the adjustment of the stability of the milling cutter head 59 during the processing operation.

[0025] The crankshaft pushing assembly 3 includes a set of upright plates 15. The upright plates 15 are installed on both sides of the top of the machining table 2 near the opening 4 of the milling machine housing 1. The upper part of the upright plates 15 is provided with guide grooves 16, and guide rods 17 are slidably fitted within the guide grooves 16. A rotating plate 18 is provided on the corresponding side of the guide rod 17. A shaft is provided on the side end of the rotating plate 18 away from the guide rod 17. Side plates 19 are fitted on both sides of the shaft. A second sliding plate 20 is provided at the bottom of the side plate 19. The bottom of the second sliding plate 20 is slidably connected to a second track 21. The second track 21 is fixed to the top of the machining table 2 near the center on both sides. A connecting plate 22 is provided between the two 20s. A threaded rod 23 with threaded engagement is inserted through one side of the connecting plate 22. A motor 24 is provided on the side of the threaded rod 23 away from the opening 4. The motor 24 is fixed to the top of the processing table 2. A fixing plate 25 is provided at the other end of the threaded rod 23. The fixing plate 25 is fixed to the top of the processing table 2. A transition fixing part 26 is sleeved on the middle of the shaft. A rotating support plate 27 is provided between the tops of the two transition fixing parts 26. A guide rod 28 is inserted through the side of the connecting plate 22 away from the threaded rod 23. Guide rod seats 29 are provided at both ends of the guide rod 28. The guide rod seats 29 are fixed to the top of the processing table 2.

[0026] The calibration component 5 includes a movable plate 30. Telescopic columns 31 are provided on both sides of the opening 4 at the top of the movable plate 30. A matching telescopic column 32 is provided inside each telescopic column 31, penetrating the first telescopic column 31. A top plate 33 is horizontally inserted between the tops of the second telescopic columns 32. A pneumatic rod 34 is provided at the bottom center of the top plate 33. A matching cylinder 35 is provided below the pneumatic rod 34. A cylinder seat 36 is provided at the bottom of the cylinder 35, and the cylinder seat 36 is fixed to the inner center of the top of the movable plate 30. A calibration support 37 is provided at the top center of the top of the top plate 33. A gear component is located at the center of the top of the movable plate 30. The gear component includes shaft seats 38 installed at the center of both sides of the top of the movable plate 30. A cylinder 39 is transversely inserted between the top of the corresponding sides of the shaft seats 38. A transverse shaft 40 is located inside the cylinder 39. The transverse shaft 40 passes through the shaft seats 38 and has gears 41 fitted at both ends. An arc-shaped groove 42 is provided on the side of the telescopic column 31 corresponding to the gear 41. A side gear tooth 43 that meshes with the gear 41 is provided on the lower part of the surface of the telescopic column 32 corresponding to the arc-shaped groove 42. The calibration support part 37 includes an L-shaped seat 44, which is fixed to the top of the top plate 33. A fixing block 50 is provided at the top recess of the 4. An inner shaft is inserted on the upper part of the protruding side near the L-shaped seat 44 on both sides of the fixing block 50. Each end of the inner shaft has a first arm 45. An second arm 46 is provided on the inner side of the other end of the first arm 45. The other side of the second arm 46 is movably connected to the side of the calibration frame 47. An fourth arm 48 is provided near the middle of the inner side of the first arm 45. One end of the fourth arm 48 is movably connected to one side of the calibration frame 47. An third arm 49 is provided on the outer side of the other end of the fourth arm 48. The other side of the third arm 49 is movably connected to the lower side of the fixing block 50. A micro-driver 5 is connected to one end of the inner shaft. 1. The micro actuator 51 is mounted on the side of the L-shaped base 44 via a mounting base. The calibration frame 47 has a side groove 52 on both sides near the protrusion of the L-shaped base 44. The ends of the second arm 46 and the fourth arm 48 are movably connected to the side wall of the side groove 52. The top of the calibration frame 47 and the side away from the protrusion of the L-shaped base 44 are both provided with calibration grooves 53. The upper part of the side away from the protrusion of the L-shaped base 44 on both sides of the fixing block 50 is provided with a side groove 54. The top of the L-shaped base 44 is provided with a V-shaped positioning groove 55 on the side away from the protrusion of the calibration frame 47. The calibration frame 47 is provided with a positioning slope on the side near the V-shaped positioning groove 55.

[0027] The milling cutter moving part 7 includes a cylinder 3 56, the bottom of which is fixed on a roller. A matching air rod 3 78 is provided inside the cylinder 3 56. The air rod 3 78 passes through the cylinder 3 56 and has a horizontal plate 57 at its top. A milling machine 58 is provided on the side of the horizontal plate 57 away from the air rod 3 78. A milling cutter disc 59 is provided at the bottom of the milling machine 58. A telescopic column 3 60 is provided at the bottom center of the horizontal plate 57. A matching telescopic column 4 77 is provided at the lower part of the telescopic column 3 60. A threaded block 61 that is threaded with the lead screw 11 is provided at the bottom of the telescopic column 4 77.

[0028] The positioning part includes a protruding plate 62 fixed at the center of the top of the column base 8. The protruding plate 62 has a longitudinal cavity 63 and a transverse cavity 64. The top of the protruding plate 62 has a threaded hole 65 at the center of one side of the longitudinal cavity 63. The threaded hole 65 has a threaded locking rod 66. The upper part of the threaded locking rod 66 penetrates the top of the milling machine housing 1. The lower part of the threaded locking rod 66 has a locking plate 67. The top center of the locking plate 67 has a locking hole that matches the threaded locking rod 66. The locking plate 67 is located in the longitudinal cavity 63. The transverse cavity 64 has a trapezoidal plate 68. The middle part of the trapezoidal plate 68 has a V-groove 69. The V-groove 69 has a matching limiting rod 70. One end of the limiting rod 70 is fixed at the center of the side of the locking plate 67. The upper center of the column base 8 has a through hole. The through hole has an internal threaded cylinder 71 that is threaded with the rotating clamp 13. The top center of the internal threaded cylinder 71 has a locking groove 72 that matches the locking plate 67.

[0029] Detailed usage and function of this embodiment: Start motor 24 to drive the threaded rod 23 to rotate. The connecting plate 22 on the threaded rod 23 slides on the threaded rod 23. After the rotating support plate 27 moves to the protective opening of the milling machine housing 1, the crankshaft connecting rod to be processed is placed in the top groove of the rotating support plate 27. Start motor 24 again to drive the threaded rod 23 to rotate in the opposite direction. The connecting plate 22 drives the sliding plates 20 on both sides to move into the milling machine housing 1 on the track 21. The guide rod 17 on the side of the rotating plate 18 slides with the guide groove 16. The rotating plate 18 rotates with the direction of the guide groove 16, thereby causing the adapter fixing part 26 to slowly flip to the right. After the pallet 27 is flipped, the crankshaft connecting rod in the top groove rolls to the right. As it rolls down the inclined surface on the right, it falls into the calibration groove 53 on the top surface of the calibration frame 47 below. The threaded rod 23 rotates in the opposite direction again, causing the pallet 27 to flip to the left and move towards the protective opening. The start cylinder 35 operates, and the cylinder 35 drives the rod 34 to extend and retract. The rod 34 drives the top plate 33 to rise, and the calibration support 37 is pushed out of the opening 4 and raised to a suitable position. The moving plate 30 is driven to move left and right in the bottom cavity. The bottom of the moving plate 30 is provided with a track groove, and a track plate is provided in the track groove. The track plate is installed on the bottom wall of the bottom cavity. The inner side wall of the track groove is provided with pulleys, and a driver is installed on the track plate. When needed... To move the movable plate 30, the driver is activated, and the controller receives a signal to move the movable plate 30 left and right on the track. The crankshaft connecting rod in the calibration groove 53 on the top surface of the calibration support 37 is moved to the left, inserting the left end of the crankshaft connecting rod into the left-side rotating clamp 13. The second cylinder 75 is activated, which drives the second rod 76 to extend and retract. The second rod 76 pushes the right-side column seat 8, which drives the internally inserted rotating clamp 13 to move to the left, clamping the right end of the crankshaft connecting rod. The first cylinder 35 is activated to move in the opposite direction, driving the first rod 34 to extend and retract. The first rod 34 moves the top plate 33 downward, causing the calibration support 37 to move downward away from the crankshaft connecting rod. Then, the micro actuator 51 is started to run. The micro actuator 51 drives the arm 45 connected to the output end. After the arm 45 rotates counterclockwise, the arm 45 drives the arm 46. The arm 46 is lifted upward under the limit of the arm 49 and the arm 48, pushing the calibration frame 47 to flip to the left. The left side of the calibration frame 47 is inserted into the V-shaped positioning groove 55, and the calibration groove 53 on the right side of the calibration frame 47 flips to face upward. The cylinder 35 is driven again to drive the rod 34 to extend and retract. The rod 34 drives the top plate 33 upward. The left and right positions are adjusted according to the size and shape of the crankshaft connecting rod above, so that the calibration groove 53 is inserted into the crankshaft connecting rod, supporting the crankshaft connecting rod and calibrating the balance of the connecting rod.When motor 14 is started, it drives the rotating clamp 13 connected to the output end. The rotating clamp 13 rotates the crankshaft connecting rod held inside. After the rotating clamp 13 rotates, it drives the internally threaded cylinder 71, which is fitted with a sleeve on its surface, to move towards the inner wall of the cavity. Adjust the threaded locking rod 66 so that it abuts against the locking plate 67. The locking plate 67 is engaged in the locking groove 72. The limiting rod 70 slides into the V-groove 69 at the center V-angle, limiting the internally threaded cylinder 71. The side of the trapezoidal plate 68 abuts against the inner wall of the cavity, so that the column seat 8 is always in contact with the inner wall of the cavity. The walls are maintained at a certain distance; the drive cylinder 56 operates, which drives the air rod 78 to extend and retract, and the air rod 78 drives the horizontal plate 57 to rise and fall, adjusting the position of the milling cutter disc 59 to facilitate the milling cutter disc 59 to process the crankshaft connecting rod below. During the processing, the position of the milling cutter disc 59 is adjusted according to the requirements, driven by the drive motor 12, which drives the lead screw 11 to rotate, causing the threaded block 61 on the lead screw 11 to move left and right as the lead screw 11 rotates, flexibly adjusting the processing area according to the requirements.

[0030] Through the specific embodiments described above, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A milling machine for machining engine crankshafts, characterized in that, The machine includes a milling machine housing (1), a machining table (2) inside the milling machine housing (1), a crankshaft pushing assembly (3) near the protective opening of the milling machine housing (1) on the top of the machining table (2); an opening (4) is provided on the inner side of the top of the machining table (2), a calibration assembly (5) is provided in the opening (4), and the calibration assembly (5) is located at the bottom of the milling machine housing (1); a crankshaft clamping assembly (6) is mounted on both sides of the opening (4) on the top of the machining table (2); a milling cutter moving part (7) is mechanically linked to the crankshaft clamping assembly (6), a roller is provided at the bottom of the milling cutter moving part (7), the roller is mounted on a track three, and the track three is fixed to the inner side of the bottom wall of the milling machine housing (1); the crankshaft clamping assembly (6) includes a part mounted on the machining table (2). The top opening (4) has column seats (8) on both sides. The top of the column seat (8) is provided with guide rod seat 1 (9). A guide rod 1 (10) and a lead screw (11) are respectively passed through the corresponding set of guide rod seat 1 (9). One end of the lead screw (11) is connected to the motor 2 (12) installed inside the milling machine housing (1). A rotating clamp (13) is provided at the center of the upper part of the column seat (8). One end of the rotating clamp (13) is connected to the motor 1 (14). The motor 1 (14) is installed inside the milling machine housing (1). A pneumatic push part is provided on the side of the column seat (8) away from the motor 1 (14). A positioning part is provided at the center of the top of the column seat (8). The milling cutter moving part (7) is mechanically linked with the lead screw (11).

2. The milling machine for machining engine crankshafts according to claim 1, characterized in that, The crankshaft pushing assembly (3) includes a set of upright plates (15). The upright plates (15) are installed on both sides of the top of the machining table (2) near the opening (4) of the milling machine housing (1). The upper part of the upright plate (15) is provided with a guide groove (16). The guide groove (16) is provided with a sliding guide rod (17). The guide rod (17) is provided with a rotating plate (18) on the corresponding side. The side end of the rotating plate (18) away from the guide rod (17) is provided with a shaft. Side plates (19) are sleeved on both sides of the shaft. The bottom of the side plate (19) is provided with a sliding plate (20). The bottom of the sliding plate (20) is slidably connected to the track. On the second (21), the second track (21) is fixed on the top of the processing table (2) near the middle on both sides. A connecting plate (22) is provided between the two slide plates (20). A threaded rod (23) with threaded engagement is inserted on one side of the connecting plate (22). A motor (24) is provided on the side of the threaded rod (23) away from the opening (4). The motor (24) is fixed on the top of the processing table (2). A fixing plate (25) is provided at the other end of the threaded rod (23). The fixing plate (25) is fixed on the top of the processing table (2). A transition fixing piece (26) is sleeved on the middle of the shaft. A rotating support plate (27) is provided between the tops of the two transition fixing pieces (26).

3. The milling machine for machining engine crankshafts according to claim 2, characterized in that, The connecting plate (22) is provided with a guide rod two (28) on the side away from the threaded rod (23). Both ends of the guide rod two (28) are provided with guide rod seats two (29), and the guide rod seats two (29) are fixed on the top of the processing table (2).

4. The milling machine for machining engine crankshafts according to claim 1, characterized in that, The calibration component (5) includes a movable plate (30). The top of the movable plate (30) is provided with telescopic columns (31) on both sides corresponding to the opening (4). The telescopic columns (31) are provided with corresponding telescopic columns (32). The telescopic columns (32) pass through the telescopic columns (31). A top plate (33) is provided between the tops of the telescopic columns (32). A pneumatic rod (34) is provided at the bottom center of the top plate (33). A corresponding cylinder (35) is provided at the bottom of the pneumatic rod (34). A cylinder seat (36) is provided at the bottom of the cylinder (35). The cylinder seat (36) is fixed at the top inner center of the movable plate (30). A calibration support (37) is provided at the top center of the top plate (33). A gear component is provided at the top center of the movable plate (30).

5. A milling machine for machining engine crankshafts according to claim 4, characterized in that, The gear component includes a shaft seat (38) installed at the center of both sides of the top of the movable plate (30). A cylinder (39) is provided between the top of the corresponding side of the shaft seat (38). A transverse shaft (40) is provided inside the cylinder (39). The transverse shaft (40) passes through the shaft seat (38) and gears (41) are sleeved at both ends. An arc groove (42) is provided on the side of the telescopic column one (31) corresponding to the gear (41). A side gear tooth (43) that meshes with the gear (41) is provided on the lower part of the surface of the telescopic column two (32) corresponding to the side of the arc groove (42).

6. A milling machine for machining engine crankshafts according to claim 4, characterized in that, The calibration support (37) includes an L-shaped seat (44), which is fixed to the top of the top plate (33). A fixing block (50) is provided in the groove at the top of the L-shaped seat (44). An inner shaft is inserted on the upper part of the protruding side of the fixing block (50) near the L-shaped seat (44). An arm (45) is provided at both ends of the inner shaft. An arm (46) is provided on the inner side of the other end of the arm (45). The other side of the arm (46) is movably connected to the calibration frame (47). On the side, a fourth arm (48) is provided on the inner side of the first arm (45) near the middle. One end of the fourth arm (48) is movably connected to one side of the calibration frame (47). The other end of the fourth arm (48) is provided on the outer side of the third arm (49). The other side of the third arm (49) is movably connected to the lower side of the fixed block (50). A micro driver (51) is connected to one end of the inner shaft. The micro driver (51) is mounted on the side of the L-shaped seat (44) through the mounting base.

7. A milling machine for machining engine crankshafts according to claim 6, characterized in that, The calibration frame (47) has a side groove 1 (52) on both sides near the protrusion of the L-shaped seat (44), and the ends of the arm 2 (46) and arm 4 (48) are movably connected to the side wall of the side groove 1 (52); the top of the calibration frame (47) and the side away from the protrusion of the L-shaped seat (44) are both provided with calibration grooves (53); the upper part of the side away from the protrusion of the L-shaped seat (44) on both sides of the fixing block (50) is provided with side groove 2 (54); the top of the L-shaped seat (44) is provided with a V-shaped positioning groove (55) on the side away from the protrusion of the calibration frame (47), and the calibration frame (47) is provided with a positioning slope on the side near the V-shaped positioning groove (55).

8. A milling machine for machining engine crankshafts according to claim 1, characterized in that, The milling cutter moving part (7) includes a cylinder three (56), the bottom of the cylinder three (56) is fixed on a roller, the cylinder three (56) is provided with a matching air rod three (78), the air rod three (78) passes through the cylinder three (56) and is provided with a horizontal plate (57) at the top, the side of the horizontal plate (57) away from the air rod three (78) is provided with a milling machine (58), the bottom of the milling machine (58) is provided with a milling cutter disc (59); the bottom center of the horizontal plate (57) is provided with a telescopic column three (60), the lower part of the telescopic column three (60) is provided with a matching telescopic column four (77), the bottom of the telescopic column four (77) is provided with a threaded block (61) that is threaded with the lead screw (11).

9. A milling machine for machining engine crankshafts according to claim 1, characterized in that, The positioning part includes a protruding plate (62) fixed at the center of the top of the column base (8). The protruding plate (62) has a longitudinal cavity (63) and a transverse cavity (64). A threaded hole (65) is provided at the center of the top of the protruding plate (62) corresponding to the longitudinal cavity (63). A threaded locking rod (66) is provided in the threaded hole (65). The upper part of the threaded locking rod (66) penetrates the top of the milling machine housing (1). A locking plate (67) is provided at the lower part of the threaded locking rod (66). A locking hole matching the threaded locking rod (66) is provided at the center of the top of the locking plate (67). Plate (67) is located in the longitudinal cavity (63); a trapezoidal plate (68) is provided in the transverse cavity (64), a V-groove (69) is provided in the middle of the trapezoidal plate (68), a matching limiting rod (70) is provided in the V-groove (69), and one end of the limiting rod (70) is fixed at the center of the side of the locking plate (67); a through hole is provided at the center of the upper part of the column base (8), and an internal threaded cylinder (71) that is threaded with the rotating clamp (13) is provided in the through hole. A locking groove (72) that is compatible with the locking plate (67) is provided at the center of the top of the internal threaded cylinder (71).

10. A milling machine for machining engine crankshafts according to claim 1, characterized in that, The pneumatic propulsion unit includes a sliding plate (73) installed on the bottom of the inner side of the mounting column (8). The bottom of the sliding plate (73) is provided with a sliding groove, and a matching track (74) is provided in the sliding groove. The track (74) is fixed on the inner side of the top of the machining table (2) near the opening (4). The cylinder (75) is fixed on one side inside the machining milling machine housing (1). A matching air rod (76) is provided inside the cylinder (75). The air rod (76) passes through the cylinder (75). The side of the air rod (76) away from the cylinder (75) is fixed at the center of the lower part of the corresponding side of the column (8).

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