Crankshaft double-end face turning and milling machine tool

Abstract

The application discloses a crankshaft double-end face turning and milling machine tool and belongs to the technical field of turning and milling machine tool machining, which comprises a machining table and a protective cover arranged on the machining table; the machining table is provided with a workpiece rotating mechanism; the workpiece rotating mechanism is located at the middle position of the machining table; the workpiece rotating mechanism is provided with a machining fixing mechanism; the machining fixing mechanism is used for fixing the workpiece; a machining adjusting mechanism is arranged on one side of the machining table; a turning machining mechanism is arranged on the machining adjusting mechanism; a machining moving mechanism is arranged on the other side of the machining table; and a turning and milling machining mechanism is arranged on the machining moving mechanism. The application can be adapted to the milling characteristics at any position and any angle on the end faces of crankshafts with different specifications, greatly improves the adaptability of the equipment to different machining requirements, and solves the problem of insufficient flexibility of traditional equipment.

Description

Technical Field

[0001] This invention belongs to the field of milling and turning machine tool technology, and particularly relates to a crankshaft double-end face milling and turning machine tool. Background Technology

[0002] A double-end milling machine is a special-purpose machine tool that integrates turning and milling functions. Its core advantage is that it can complete multi-process machining of both ends of a workpiece in a single setup. It is suitable for shafts, discs and other parts that require high-precision double-end machining, and is widely used in the automotive, new energy, aerospace and other fields.

[0003] The crankshaft is one of the core components of an engine, often referred to as its heart. Its machining quality directly affects the engine's overall performance, reliability, and lifespan. With the development of industries such as automobiles, shipbuilding, and aerospace, the performance requirements for engines are constantly increasing, which necessitates corresponding improvements in the machining precision and surface quality of crankshafts.

[0004] However, existing crankshaft machining equipment still has significant limitations in practical applications: on the one hand, it is difficult to flexibly match the corresponding turning or milling machining methods according to different types of machining features (such as planes, keyways, bolt holes, etc.) on the crankshaft end face; on the other hand, when machining specific structures such as keyways, bolt holes, and positioning grooves on the crankshaft end face, it is impossible to accurately adjust the machining position of the milling cutter according to the different positional parameters (such as distribution angle, radial distance, etc.) of these features, resulting in insufficient flexibility of the equipment to adapt to crankshafts of different specifications and machining requirements. Summary of the Invention

[0005] This invention provides a crankshaft double-end face milling machine to solve the problems in the prior art.

[0006] The present invention employs the following technical solution: a crankshaft double-end face milling and turning machine tool, comprising a machining table and a protective cover mounted on the machining table; the machining table is provided with: a workpiece rotation mechanism; the workpiece rotation mechanism is located at the middle position of the machining table; a machining fixing mechanism is provided on the workpiece rotation mechanism; the machining fixing mechanism is used to fix the workpiece; a machining adjustment mechanism is disposed on one side of the machining table; a turning machining mechanism is disposed on the machining adjustment mechanism, and the machining adjustment mechanism drives the turning machining mechanism to move towards the workpiece to perform turning operations; a machining moving mechanism is disposed on the other side of the machining table; and a milling and turning machining mechanism is disposed on the machining moving mechanism, and the machining moving mechanism drives the milling and turning machining mechanism to move towards the workpiece to perform milling and turning operations.

[0007] Compared with the prior art, the present invention achieves the following beneficial effects: In this invention, when milling the end face of a crankshaft, a first motor drives the milling disc to rotate, thus milling the crankshaft end face. When facing an arc-shaped crankshaft end face, a second motor drives a transmission gear roller to rotate on an arc-shaped gear plate, thereby causing a swing plate to swing left and right within two arc-shaped grooves. During the swinging process, the angle of the milling disc swings, thus machining the arc-shaped end face of the crankshaft. The angle of the milling disc swings to adapt to the angle of the arc-shaped end face of the crankshaft. The angle of the milling disc can be adjusted by swinging, and different angle surfaces can be machined without rotating the workpiece, improving machining flexibility. When machining a parallel end face, a vertical electric slide and two horizontal electric slides work together to adjust the position of the milling disc back and forth and up and down to mill the crankshaft end face.

[0008] In this invention, two horizontal electric slides synchronously drive a moving plate to move horizontally along the length of the machining table; a vertical electric slide installed inside the moving plate drives the milling and turning mechanism to move up and down vertically, ultimately enabling the milling and turning mechanism to adjust its position over a wide range in a horizontal and vertical two-dimensional plane. During the milling and turning of the crankshaft end face, the milling and turning mechanism can be quickly moved to the approximate machining area based on the radial distance and height position of the crankshaft end face structure, providing a prerequisite for the precise angle adjustment of the milling cutter and solving the problem of limited movement range of the milling mechanism in traditional equipment. Attached Figure Description

[0009] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the processing fixing mechanism and the workpiece rotating machine in this invention; Figure 4 This is a three-dimensional structural diagram of the workpiece rotating machine in this invention; Figure 5 This is a three-dimensional structural diagram of the processing and fixing mechanism in this invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 This is a three-dimensional structural diagram of the processing and adjustment mechanism in this invention; Figure 8 This is a three-dimensional structural diagram of the adjusting arm in this invention; Figure 9This is a three-dimensional structural diagram of the turning mechanism in this invention. Figure 1 ; Figure 10 This is a three-dimensional structural diagram of the turning mechanism in this invention. Figure 2 ; Figure 11 This is a three-dimensional structural diagram of the processing and moving mechanism in this invention; Figure 12 This is a three-dimensional structural diagram of the milling and turning mechanism in this invention; Figure 13 A schematic diagram of the three-dimensional structure of the crankshaft Figure 1 ; Figure 14 A schematic diagram of the three-dimensional structure of the crankshaft Figure 2 .

[0010] Figure label: 1. Machining table; 10. Protective cover; 2. Workpiece rotation mechanism; 20. Rotating base; 21. Rotary motor; 22. Rotary gear; 23. Rotary disk; 24. Through groove; 25. Gear ring; 3. Machining fixing mechanism; 3. Fixing plate; 30. Slide rod; 31. Slider; 32. Motor base; 33. Drive motor; 34. First gear; 35. Second gear; 36. Drive screw shaft; 37. Machining adjustment mechanism; 4. Mounting table; 40. Adjustment motor; 42. Front arm; 431. Rear arm; 432. Adjustment motor; 433. Adjustment screw shaft; 434. Adjustment frame; 44. Adjustment wheel; 45. Slide groove; 46. 47 Adjusting electric slide, 5 Turning mechanism, 50 Mounting frame, 51 Adjusting electric cylinder, 52 Reducer, 53 Machining motor, 54 Machining disc, 55 Three-jaw chuck, 56 Threading tool holder, 57 Turning tool, 58 Working motor, 59 Rotating cutter head, 6 Machining moving mechanism, 60 Moving plate, 61 Vertical electric slide, 62 Horizontal electric slide, 7 Turning and milling mechanism, 70 Milling disc, 71 First motor, 72 Protective box, 73 Placement frame, 74 Swing plate, 75 Second motor, 76 Arc plate, 77 Arc toothed plate, 78 Transmission toothed roller. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0012] The technical solution of a crankshaft double-end face milling machine tool provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0013] Reference Figures 1 to 14As shown, this embodiment of the invention provides a crankshaft double-end face milling and turning machine, including a machining table 1 and a protective cover 10 mounted on the machining table 1; the machining table 1 is provided with: a workpiece rotation mechanism 2; the workpiece rotation mechanism 2 is located at the middle position of the machining table 1; the workpiece rotation mechanism 2 is provided with a machining fixing mechanism 3; the machining fixing mechanism 3 is used to fix the workpiece; a machining adjustment mechanism 4 is disposed on one side of the machining table 1; a turning machining mechanism 5 is disposed on the machining adjustment mechanism 4, and the machining adjustment mechanism 4 drives the turning machining mechanism 5 to move towards the workpiece to perform turning operations; a machining moving mechanism 6 is disposed on the other side of the machining table 1; a turning and milling machining mechanism 7 is disposed on the machining moving mechanism 6, and the machining moving mechanism 6 drives the turning and milling machining mechanism 7 to move towards the workpiece to perform turning and milling operations.

[0014] It should be noted that a filter screen is provided in the middle of the processing table 1. During the processing, cutting fluid or coolant can be used in conjunction. The filter screen has a collection tank inside to collect waste liquid or waste chips.

[0015] After the workpiece rotation mechanism 2 drives the crankshaft to rotate, the machining adjustment mechanism 4 works in conjunction with the turning mechanism 5 to precisely adjust the position and angle of the turning tool 57 for features such as end face planes and threads, completing the turning process. The machining movement mechanism 6 works in conjunction with the milling and turning mechanism 7 to adjust the position and angle of the milling disc 70 for features such as different arc angles at the crankshaft end, completing the milling process. The same machine achieves seamless switching between turning and milling in a single setup, without the need to change machine tools, solving the problem that traditional equipment cannot match different machining types.

[0016] The machining moving mechanism 6 quickly moves the milling and turning mechanism 7 to the approximate machining area for rough adjustment. The milling and turning mechanism 7 achieves precise fine adjustment of the milling disc angle 70 through the arc swing of the swing plate 74. It can adapt to milling features at any position and angle on the end face of crankshafts of different specifications, greatly improving the adaptability of the equipment to different machining needs and solving the problem of insufficient flexibility of traditional equipment.

[0017] In this embodiment, refer to Figure 4 As shown, the workpiece rotation mechanism 2 includes a rotating base 20, a rotating motor 21, a rotating gear 22, and a rotating disk 23. The rotating base 20 is vertically mounted on the top of the processing table 1, and the rotating disk 23 is rotatably connected to the rotating base 20. Both the rotating disk 23 and the rotating base 20 are provided with through slots 24 for the workpiece to pass through. The rotating motor 21 is located on the rotating base 20, and the rotating gear 22 is located on the main shaft of the rotating motor 21. The rotating disk 23 is provided with a gear ring 25 that meshes with the rotating gear 22.

[0018] When the workpiece is rotated for machining, the rotary motor 21 drives the rotary gear 22 to rotate on the gear ring 25, which in turn drives the rotary disk 23 to rotate around the central axis of the rotary base 20. The crankshaft to be machined passes through the through groove 24 between the rotary disk 23 and the rotary base 20, and rotates synchronously with the rotary disk 23, forming the main rotational motion of the workpiece required for the turning process, and simultaneously positioning the angle of the workpiece in the milling process. When drilling holes in the crankshaft or machining the keyway on the crankshaft, the crankshaft needs to be rotated for machining. The through groove 24 is designed to accommodate crankshafts of different lengths. The stable rotation of the rotary disk 23 ensures that the crankshaft has no radial runout during machining, solving the problem of workpiece shaking affecting surface quality during machining with traditional equipment.

[0019] In this embodiment, refer to Figure 5 and Figure 6 As shown, the processing fixing mechanism 3 includes two fixing plates 30, two sliding rods 31 and two fixed driving components. The two sliding rods 31 are symmetrically arranged in the rotating disk 23. Each fixing plate 30 has a slider 32 at both ends. The two sliders 32 slide in cooperation with the two sliding rods 31. The fixing plate 30 has a semi-circular groove. The two fixed driving components are located at both ends of the rotating disk 23.

[0020] Each fixed drive component includes a motor base 33, a drive motor 34, a first gear 35, a second gear 36, and a drive screw shaft 37. The motor base 33 is located on the side wall of the rotating disk 23. The first gear 35 is located on the main shaft of the drive motor 34. The second gear 36 is rotatably connected to the side wall of the rotating disk 23 and meshes with the first gear 35. The drive screw shaft 37 is rotatably connected to the fixed plate 30, and the drive screw shaft 37 and the second gear 36 are threadedly connected.

[0021] It should be noted that the drive screw shaft 37 and the second gear 36 are connected by a thread at the center of the gear plate. The second gear 36 has a hole in the middle, and the hole has a thread that mates with the drive screw shaft 37.

[0022] During the milling and turning of the workpiece, the two fixed driving components start synchronously: the spindle of the drive motor 34 drives the first gear 35 to rotate, the first gear 35 rotates the second gear 36, and then drives the drive screw shaft 37, which is threadedly connected to the second gear 36, to rotate. The rotation of the drive screw shaft 37 is converted into the fixed plate 30 sliding linearly along the two slide rods 31 through the two sliders 32. The two fixed plates 30 approach each other through the cooperation of the sliders 32 and the slide rods 31, and finally close together through the semi-circular groove, achieving clamping and fixing from both sides of the crankshaft; it can be adapted to crankshafts of different diameters, solving the limitation of traditional fixing mechanisms that can only adapt to a single specification of workpiece, and improving the versatility of the equipment; the symmetrical slide rods 31 guide and the screw drive clamping ensure that the center of the crankshaft coincides with the center of the rotating disk 23, avoiding the machining taper or ellipse caused by clamping eccentricity, while the clamping force is uniform, preventing the thin-walled crankshaft from deforming during processing.

[0023] In this embodiment, refer to Figure 7 As shown, the processing adjustment mechanism 4 includes a mounting table 40, an adjustment seat, an adjustment motor 42, an adjustment arm, and an adjustment frame 44. The adjustment seat is horizontally slidably connected to the mounting table 40. The adjustment motor 42 is located at the rear of the mounting table 40. The adjustment frame 44 is horizontally arranged at the rear of the adjustment seat. One end of the adjustment arm is connected to the main shaft of the adjustment motor 42, and the other end of the adjustment arm is provided with an adjustment wheel 45. The adjustment frame 44 is provided with a sliding groove 46 that slides with the adjustment wheel 45. The top of the processing table 1 is provided with two electric adjustment slides 47 for driving the mounting table 40 to move.

[0024] In this embodiment, refer to Figure 8 As shown, the adjusting arm includes a front arm 431, a rear arm 432, an adjusting motor 433, and an adjusting screw shaft 434. The front arm 431 is horizontally slidably connected to the rear arm 432. The adjusting motor 433 is horizontally arranged inside the rear arm 432. The adjusting screw shaft 434 is connected to the main shaft of the adjusting motor 433. The front arm 431 is threadedly connected to the adjusting screw shaft 434. The adjusting wheel 45 is rotatably connected to the front arm 431.

[0025] When turning the crankshaft, the position of the turning tool 57 needs to be coarsely and finely adjusted. During coarse adjustment, the adjusting motor 42 drives the adjusting arm to rotate, which in turn causes the adjusting wheel 45 on the adjusting arm to slide in the groove 46 inside the adjusting frame 44. The sliding of the adjusting frame 44 will cause the adjusting seat to move horizontally on the mounting table 40, causing the adjusting seat and the turning mechanism 5 above it to move closer to or further away from the crankshaft end face, thus achieving a wide range of adjustment of the machining position. During fine-tuning, the adjusting motor 433 drives the adjusting arm to rotate, and the adjusting wheel 45 at the end of the adjusting arm slides in the groove 46 of the adjusting frame 44, pushing the adjusting seat to slide horizontally along the mounting platform 40. At the same time, the adjusting motor 433 inside the adjusting arm drives the adjusting screw shaft 434 to rotate, causing the forearm 431 to extend and retract, which changes the position and distance of the adjusting wheel 45 in the groove 46, further fine-tuning the position of the adjusting wheel 45, and finally achieving precise positioning of the turning mechanism 5. The extension and rotation of the adjusting arm can fine-tune the machining angle of the turning tool 57, ensuring that the end face after turning is perpendicular to the crankshaft axis and improving the parallelism of the two end faces.

[0026] This invention combines a coarse adjustment and a fine adjustment dual-level adjustment mode, which can control the positioning accuracy of the turning mechanism 5 to the micrometer level. It can accurately adjust the position of the turning tool 57 for different features such as planes and steps on the crankshaft end face, such as the end face near the journal and edge steps, thus solving the problem that the turning position of traditional equipment cannot flexibly adapt to different end face features.

[0027] In this embodiment, refer to Figure 9 and Figure 10 As shown, the turning mechanism 5 includes a mounting frame 50, two adjusting electric cylinders 51 are provided in the adjusting seat, the mounting frame 50 is horizontally set on the telescopic ends of the two adjusting electric cylinders 51, a reducer 52 is provided on the mounting frame 50, a machining motor 53 is provided on the reducer 52, a machining disk 54 is provided on the mounting frame 50 and rotatably connected thereto, the machining disk 54 is connected to the machining motor 53 through transmission, a three-jaw chuck 55 is provided at the front of the machining disk 54, and a threading tool bar 56 is provided on the three-jaw chuck 55.

[0028] In this embodiment, refer to Figure 9 and Figure 10 As shown, a turning tool 57 is provided on one side of the machining disk 54, and a working motor 58 is provided on the other side of the machining disk 54. A rotating cutter head 59 is provided on the spindle of the working motor 58.

[0029] The two adjusting electric cylinders 51 inside the adjusting seat extend and retract synchronously, pushing the mounting frame 50 to adjust in the vertical height direction, driving the machining disk 54 closer to the crankshaft end face and moving the threading tool bar 56 to the crankshaft end face to perform boring work on the crankshaft; When the crankshaft is turned or the keyway on the crankshaft is machined, the two adjusting electric slides 47 synchronously drive the position of the mounting table 40 to move to the left or right side of the crankshaft, so that the turning tool 57 and the rotating tool head 59 are moved to the side of the crankshaft, and the machining motor 53 drives them to rotate to perform machining operations on the crankshaft. The machining motor 53 drives the machining disk 54 to rotate after the speed is reduced and the torque is increased by the reducer 52. The three-jaw chuck 55 at the front of the machining disk 54 can fix the threaded tool bar 56 for boring the crankshaft end face. The turning tool 57 on one side of the machining disk 54 is responsible for end face flattening and outer circle step turning. The working motor 58 on the other side drives the rotating cutter head 59 to rotate, which can complete the fine turning of the end face and the machining of the keyway. The integrated threading tool holder 56, turning tool 57, and rotating tool head 59 are three types of turning tools that can complete multiple processes of crankshaft end face rough turning → flat finish turning → threading → stepped turning in one clamping without changing equipment or tools. This solves the limitation of traditional equipment's single turning function being unable to match different end face features and improves processing efficiency.

[0030] In this embodiment, refer to Figure 11 As shown, the processing moving mechanism 6 includes a moving plate 60, a vertical electric slide 61 and two horizontal electric slides 62. The two horizontal electric slides 62 are symmetrically arranged on the processing table 1. The moving plate 60 is vertically connected to the two horizontal electric slides 62, and the vertical electric slide 61 is installed inside the moving plate 60.

[0031] Two horizontal electric slides 62 synchronously drive the moving plate 60 to move horizontally along the length of the machining table 1; the vertical electric slide 61 installed in the moving plate 60 drives the milling and turning mechanism 7 to move up and down vertically, ultimately realizing a wide range of position adjustment of the milling and turning mechanism 7 in the horizontal and vertical two-dimensional plane. During the milling and turning of the crankshaft end face, the milling and turning mechanism 7 can be quickly moved to the approximate machining area according to the radial distance and height position of the crankshaft end face structure, providing a prerequisite for the precise angle adjustment of the milling cutter in the future, and solving the problem of limited movement range of the milling mechanism of traditional equipment.

[0032] In this embodiment, refer to Figure 12 As shown, the milling and turning mechanism 7 includes a milling disc 70, a first motor 71, a protective box 72, a placement frame 73, a swing plate 74, a second motor 75, and two arc-shaped plates 76. The placement frame 73 is horizontally connected to the moving end of the vertical electric slide table 61. The two arc-shaped plates 76 are symmetrically arranged at the bottom of the swing plate 74. The placement frame 73 is provided with two arc-shaped grooves, and the two arc-shaped plates 76 are slidably engaged with the two arc-shaped grooves respectively. An arc-shaped toothed plate 77 is provided at the middle position of the bottom of the swing plate 74. A transmission toothed roller 78 is rotatably connected to the placement frame 73. The transmission toothed roller 78 is connected to the arc-shaped toothed plate 77. The second motor 75 is located on the outer wall of the placement frame 73 and is connected to the transmission toothed roller 78. The protective box 72 is located at the top of the swing plate 74. The first motor 71 is located inside the protective box 72. The milling disc 70 is located on the spindle of the first motor 71.

[0033] When milling the end face of the crankshaft, the first motor 71 drives the milling disc 70 to rotate, which can perform milling work on the end face of the crankshaft. When facing the arc-shaped crankshaft end face, the second motor 75 drives the transmission gear roller 78 to rotate on the arc-shaped gear plate 77, thereby causing the swing plate 74 to swing left and right in the two arc-shaped grooves through the two arc-shaped plates 76. During the swinging process, the swing plate 74 will drive the milling disc 70 to swing its angle position, thereby processing the arc-shaped end face of the crankshaft. The swing angle of the milling disc 70 can be adapted to the angle of the arc-shaped end face of the crankshaft. The angle of the milling disc 70 can be adjusted by swinging, and different angle surfaces can be processed without rotating the workpiece, improving processing flexibility.

[0034] When machining parallel end faces, the vertical electric slide 61 and two horizontal electric slides 62 work together to drive the milling disc 70 to adjust its position back and forth and up and down to mill the end face of the crankshaft.

[0035] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A crankshaft double-end face milling machine, comprising a machining table (1) and a protective cover (10) disposed on the machining table (1); characterized in that, The processing table (1) is equipped with: Workpiece rotation mechanism (2); the workpiece rotation mechanism (2) is located at the middle position of the processing table (1); The workpiece rotation mechanism (2) is provided with a processing fixing mechanism (3); the processing fixing mechanism (3) is used to fix the workpiece; The processing adjustment mechanism (4) is located on one side of the processing table (1). It includes a mounting table (40), an adjustment seat, an adjustment motor (42), an adjustment arm, and an adjustment frame (44). The adjustment seat is horizontally slidably connected to the mounting table (40). The adjustment motor (42) is located at the rear of the mounting table (40). The adjustment frame (44) is horizontally located at the rear of the adjustment seat. One end of the adjustment arm is connected to the main shaft of the adjustment motor (42). The other end of the adjustment arm is provided with an adjustment wheel (45). The adjustment frame (44) is provided with a sliding groove (46) that slides with the adjustment wheel (45). The top of the processing table (1) is provided with two electric adjustment slides (47) for driving the mounting table (40) to move. The adjusting arm includes a front arm (431), a rear arm (432), an adjusting motor (433), and an adjusting screw shaft (434). The front arm (431) is horizontally slidably connected to the rear arm (432). The adjusting motor (433) is horizontally arranged inside the rear arm (432). The adjusting screw shaft (434) is connected to the main shaft of the adjusting motor (433). The front arm (431) and the adjusting screw shaft (434) are threadedly connected. The adjusting wheel (45) is rotatably connected to the front arm (431). A turning mechanism (5) is mounted on a machining adjustment mechanism (4). The machining adjustment mechanism (4) drives the turning mechanism (5) to move toward the workpiece to perform turning operations. The turning mechanism (5) includes a mounting frame (50). Two adjusting electric cylinders (51) are provided in the adjustment seat. The mounting frame (50) is horizontally mounted on the extension and retraction ends of the two adjusting electric cylinders (51). A reducer (52) is provided on the mounting frame (50). A machining motor (53) is provided on the reducer (52). A rotatably connected motor is provided on the mounting frame (50). A machining disk (54) is connected to a machining motor (53) via a transmission. A three-jaw chuck (55) is provided at the front of the machining disk (54), and a threaded tool bar (56) is provided on the three-jaw chuck (55) for boring the crankshaft end face. A turning tool (57) is provided on one side of the machining disk (54) for turning the end face flat and the outer circle step. A working motor (58) is provided on the other side of the machining disk (54), and a rotating cutter head (59) is provided on the spindle of the working motor (58) for completing the fine turning of the end face and the machining of the keyway. A processing moving mechanism (6) is provided on the other side of the processing table (1); The milling and turning mechanism (7) is set on the machining moving mechanism (6). The machining moving mechanism (6) moves the milling and turning mechanism (7) quickly to achieve coarse adjustment. The milling and turning mechanism (7) then achieves fine adjustment of the milling disk (70) angle through the arc swing of the swing plate (74) on it.

2. The crankshaft double-end face milling machine tool according to claim 1, characterized in that: The workpiece rotation mechanism (2) includes a rotating base (20), a rotating motor (21), a rotating gear (22), and a rotating disk (23). The rotating base (20) is vertically mounted on the top of the processing table (1). The rotating disk (23) is rotatably connected to the rotating base (20). Both the rotating disk (23) and the rotating base (20) are provided with through slots (24) for the workpiece to pass through. The rotating motor (21) is located on the rotating base (20). The rotating gear (22) is located on the main shaft of the rotating motor (21). The rotating disk (23) is provided with a toothed ring (25) that meshes with the rotating gear (22).

3. The crankshaft double-end face milling machine tool according to claim 1, characterized in that: The processing fixing mechanism (3) includes two fixing plates (30), two sliding rods (31) and two fixed driving components. The two sliding rods (31) are symmetrically arranged in the rotating disk (23). Each fixing plate (30) has a slider (32) at both ends. The two sliders (32) slide with the two sliding rods (31). The fixing plate (30) has a semi-circular groove. The two fixed driving components are located at both ends of the rotating disk (23).

4. A crankshaft double-end face milling machine tool according to claim 3, characterized in that: Each of the fixed drive components includes a motor base (33), a drive motor (34), a first gear (35), a second gear (36), and a drive screw shaft (37). The motor base (33) is located on the side wall of the rotating disk (23). The first gear (35) is located on the main shaft of the drive motor (34). The second gear (36) is rotatably connected to the side wall of the rotating disk (23) and meshes with the first gear (35). The drive screw shaft (37) is rotatably connected to the fixed plate (30). The drive screw shaft (37) and the second gear (36) are threadedly connected.

5. A crankshaft double-end face milling machine tool according to claim 1, characterized in that: The processing moving mechanism (6) includes a moving plate (60), a vertical electric slide (61) and two horizontal electric slides (62). The two horizontal electric slides (62) are symmetrically arranged on the processing table (1). The moving plate (60) is vertically connected to the two horizontal electric slides (62). The vertical electric slide (61) is installed inside the moving plate (60).

6. A crankshaft double-end face milling machine tool according to claim 1, characterized in that: The milling and turning mechanism (7) includes a milling disc (70), a first motor (71), a protective box (72), a placement frame (73), a swing plate (74), a second motor (75), and two arc-shaped plates (76). The placement frame (73) is horizontally connected to the moving end of the vertical electric slide (61). The two arc-shaped plates (76) are symmetrically arranged at the bottom of the swing plate (74). The placement frame (73) has two arc-shaped grooves, and the two arc-shaped plates (76) slide in contact with the two arc-shaped grooves respectively. An arc-shaped toothed plate (77) is provided at the bottom middle position of (74). A transmission toothed roller (78) is provided on the placement frame (73) and is rotatably connected. The transmission toothed roller (78) is connected to the arc-shaped toothed plate (77) in a transmission connection. The second motor (75) is located on the outer wall of the placement frame (73) and is connected to the transmission toothed roller (78) in a transmission connection. The protective box (72) is located on the top of the swing plate (74). The first motor (71) is located inside the protective box (72). The milling disc (70) is located on the main shaft of the first motor (71).

Images