Automobile front axle boring device

Abstract

The present invention relates to the technical field of boring processing, and in particular to a boring device for the front axle of an automobile; comprising a workbench and a boring mechanism and two vises mounted thereon; the boring mechanism comprises a driving portion and a boring bar mounted thereon, a boring tool being mounted on the boring bar, and a support mechanism located on the rear side of the boring mechanism being provided on the workbench. The present invention realizes the dual functions of anti-vibration reinforcement of the boring bar and vibration suppression support of the front axle through the support mechanism; wherein the support rod and the boring bar are plugged together to form an axially through-supporting body, and the radial constraint of the two by the extrusion piece on the limit plate is significantly improved, and at the same time, the limit plate cooperates with the pushing plate and the limit column to form a circumferential wrapping support for the front axle processing section, eliminating the vibration coupling of the suspended section, thereby suppressing chatter and ensuring the processing accuracy and surface quality of the kingpin hole.

Description

Technical Field

[0001] The invention relates to the technical field of boring processing, in particular to a boring device for an automobile front axle. Background Art

[0002] The front axle of an automobile is a core load-bearing and steering component of the vehicle chassis. It features kingpin holes at both ends for mounting the steering knuckles. When the kingpin holes become enlarged or deformed due to long-term wear and tear, boring is required to remove the damaged layer, enlarge the holes to a uniform size, and restore the regular circular profile and surface quality to facilitate re-press-fitting of the matching bushings. Existing maintenance methods typically utilize a horizontal boring machine. The boring bar of a horizontal boring machine is driven by a spindle and has mounting holes defined in the bar. An independent boring tool is secured in the mounting hole by set screws, while the end of the boring bar is supported by a tailstock ejector pin. The front axle is secured to the workbench with a vise. Adjusting the cutting depth requires repeatedly loosening and tightening screws and manually moving the boring tool.

[0003] At present, the following problems exist in the repair process of automobile front axles: First, although the boring bar adopts a double-point support structure with the spindle box drive end clamping and the tailstock ejector end contacting, its bending stiffness is insufficient and it is difficult to effectively suppress radial vibration. When repairing the unevenly worn kingpin hole, the cutting depth will change, resulting in increased fluctuations in the radial cutting force, which can easily cause vibration, resulting in vibration marks on the kingpin hole wall and increasing the risk of boring tool chipping; secondly, although the front axle is fixed by a fixture, its kingpin hole processing section is often in a suspended state to avoid interference. Therefore, there is a lack of active vibration suppression support for this processing area. During the cutting process, the excited vibration is easily coupled with the boring bar vibration, further amplifying the vibration of the processing system and affecting the kingpin hole processing accuracy and surface quality.

[0004] Therefore, the front axle kingpin hole processing section is easily coupled with the boring bar vibration due to the lack of active vibration suppression support in the air, causing vibration, which affects the kingpin hole processing accuracy and surface quality. This is a technical problem that technical personnel in this field need to solve. Summary of the Invention

[0005] In view of the above problems, an embodiment of the present invention provides a vehicle front axle boring device to solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present invention provides the following technical solutions: a boring device for the front axle of an automobile, comprising a workbench, a boring mechanism and two vises mounted thereon; the boring mechanism comprises a driving part and a boring bar mounted thereon, a boring tool is mounted on the boring bar, and a supporting mechanism located at the rear side of the boring mechanism is provided on the workbench; the supporting mechanism comprises a fixed plate fixedly mounted on the upper end of the workbench and coaxial with the boring bar, a plurality of limit plates are uniformly and movably mounted on the fixed plate along its circumference, two groups of extrusion members are provided on the limit plate, a plurality of limit columns are mounted on the front end of the fixed plate along its circumference, and a pushing plate is fixedly mounted on the limit plate; the fixed plate is coaxial with the boring bar. A support rod is movably installed, and the support rod and the boring bar are plugged in and matched by a pair of plug rods; a linkage part is provided between the driving part and the support rod for making the support rod move synchronously with the boring bar, and an execution part is provided on the rear side of the fixed plate, which is used to fix the limit plate for secondary use as the support rod moves; when boring, the support rod and the boring bar are first plugged in to form an axially through support body, and then the execution part drives the limit plate to clamp the outer wall of the front axle processing section, and at the same time drives the pushing plate to push the front axle and the limit column to fit tightly, thereby realizing the circumferential wrapping constraint of the front axle processing section and the support and vibration prevention of the double-side end faces, and the limit plate also drives the extrusion part to implement radial rolling constraint and vibration prevention on the support rod and the boring bar.

[0007] As a preferred solution, a fixed seat is fixedly installed on the workbench, a through hole coaxial with the boring bar is opened on the fixed seat, a fixed plate is fixedly installed in the through hole of the fixed seat, a U-shaped slot corresponding to the limit plate is opened on the fixed plate, and the limit plate is movably installed in the corresponding U-shaped slot.

[0008] As a preferred solution, the execution part includes two inclined grooves on the inner walls opposite to each other corresponding to the U-shaped groove of the fixed seat. The end of the inclined groove away from the center of the fixed disk is inclined forward. A guide column is installed on the limit plate and slides with the corresponding two inclined grooves. A push-pull member is provided on the fixed seat.

[0009] As a preferred solution, the push-pull member includes a movable seat slidably installed on the rear side of the fixed seat through a pair of guide rods. The movable seat is also provided with a through hole coaxial with the boring hole. A movable plate is fixedly installed in the through hole on the movable seat. U-shaped grooves are also provided at positions corresponding to the movable plate and the limit plate. The limit plate is movably installed in the corresponding U-shaped groove on the movable seat.

[0010] As a preferred solution, the linkage part includes a shaft seat rotatably installed behind the rear end of the support rod that movably passes through the movable disk, a sliding rod that slides through the fixed seat is fixedly installed on the front end of the shaft seat, and a tension spring is provided on the sliding rod that is fixedly connected to the fixed seat and the shaft seat at the front and rear ends respectively; a pair of push rods are fixedly installed on the main spindle box, and the front end of the shaft seat is provided with a circular groove that corresponds to the push rod one by one.

[0011] As a preferred solution, the locking part includes a slip ring rotatably mounted on the support rod and located between the fixed disk and the movable disk. A locking rod corresponding to the limit plate is fixedly mounted at the rear end of the slip ring. A rectangular plate located on the rear side of the movable disk is fixedly mounted at one end of the limit plate close to the center of the movable disk. The locking rod slides through the movable disk and the corresponding rectangular plate.

[0012] As a preferred solution, linear waist grooves are provided on two opposite inner walls of the U-shaped notch on the movable plate, and rollers that slide in cooperation with the corresponding two waist grooves are installed on the limiting plate.

[0013] As a preferred solution, the extrusion member includes an extrusion plate, and the extrusion plate is fixedly mounted on one end of the limiting plate close to the center of the fixed disk. The extrusion plate is in rolling friction contact with the support rod and the boring bar.

[0014] As a preferred solution, the driving part includes a linear module fixedly mounted on the upper end of the workbench, the moving section of the linear module is fixedly mounted with a spindle box, the output shaft of the spindle box is fixedly mounted with a three-jaw chuck, and the boring bar is clamped and fixed by the three-jaw chuck.

[0015] As a preferred solution, a hydraulic cylinder is fixedly installed at the front end of the fixed seat, and the telescopic section of the hydraulic cylinder slides through the fixed seat and is fixedly connected to the movable seat.

[0016] The technical solution of the present invention has at least one of the following technical effects: First, the present invention realizes the dual functions of anti-vibration reinforcement of the boring bar and vibration suppression support of the front axle through a support mechanism; wherein, the support rod and the boring bar are plugged into each other to form an axially through-support body, and the radial constraints of the two by the extrusion parts on the limit plate are combined to significantly improve the stiffness of the boring bar. At the same time, the limit plate cooperates with the pushing plate and the limit column to form a circumferential wrapping support for the front axle processing section, eliminating the vibration coupling of the suspended section, thereby suppressing chatter and ensuring the processing accuracy and surface quality of the kingpin hole.

[0017] 2. The present invention implements radial rolling constraints on the joint section of the support rod and the boring bar through multiple groups of extruded parts on the limit plates, forming span auxiliary support points, effectively suppressing the radial vibration of the boring bar caused by cutting force fluctuations, eliminating chatter marks and reducing the risk of boring cutter chipping, thereby improving the processing accuracy and surface quality of the kingpin hole.

[0018] 3. In the present invention, the circumferentially uniformly distributed limit plates are synchronously radially advanced under the drive of the actuator to tightly wrap the outer wall of the front axle processing section, eliminating the rigid weak points in the suspended area; the pushing plates and the limit columns cooperate to form end face abutment constraints, preventing axial movement of the workpiece, significantly improving the stability of the processing system, and ensuring the processing accuracy and surface quality of the kingpin hole.

[0019] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 for Figure 1 Schematic diagram of the structure after hiding the workbench.

[0023] Figure 3 It is a structural schematic diagram of the boring mechanism of the present invention.

[0024] Figure 4 for Figure 3 A magnified view of the structure in Figure 2.

[0025] Figure 5 It is a schematic structural diagram of the guide column, inclined groove, roller and waist groove of the present invention.

[0026] Figure 6 It is a cross-sectional view of the locking rod, rectangular plate, inserting rod, fixed disk and movable disk of the present invention.

[0027] Figure 7 Schematic diagram of the three-dimensional structure of the front axle.

[0028] 1. Boring mechanism; 2. Linear module; 3. Main spindle box; 4. Three-jaw chuck; 5. Boring bar; 6. Support mechanism; 7. Fixed plate; 8. Fixed seat; 9. Support rod; 10. Limit plate; 11. Guide column; 12. Push-pull member; 13. Guide rod; 14. Push plate; 15. Pushing plate; 16. Executing part; 17. Bevel; 18. Guide column; 19. Push-pull member; 20. Guide rod; 21. Moving seat; 22. Moving plate; 23. Waist groove; 24. Roller; 25. Hydraulic cylinder; 26. Linkage part; 27. Shaft seat; 28. Tension spring; 29. ​​Push rod; 30. Locking part; 31. Slip ring; 32. Locking rod; 33. Limiting plate; 34. Limiting column; 35. Pushing plate; 36. Executing part; 37. Bevel; 38. Guide column; 39. Push-pull member; 40. Guide rod; 41. Moving seat; 422. Moving plate; 423. Waist groove; 424. Roller; 425. Hydraulic cylinder; 42. Linkage part; 43. Shaft seat; 44. Tension spring; 45. Pushing rod; 46. Locking part; 47. Slip ring; 48. Locking rod; 49. Rectangular plate; 50. Extrusion member; 51. Extrusion plate. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 7 As shown, a vehicle front axle boring device includes a workbench 10, a boring mechanism 2 mounted thereon, and two vises 11; the boring mechanism 2 includes a driving unit and a boring bar 23 mounted thereon, a boring tool 24 being radially fixedly mounted on the boring bar 23 by means of set screws, and a supporting mechanism 3 located at the rear side of the boring mechanism 2 is provided on the workbench 10; the vehicle front axle (hereinafter referred to as the front axle) targeted by the present invention has a shape as shown in FIG. Figure 7 shown.

[0031] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown, the support mechanism 3 includes a fixed plate 30 fixedly mounted on the upper end of the workbench 10 and coaxial with the boring bar 23, a support rod 31 is coaxially movably mounted on the fixed plate 30, and the front end of the support rod 31 is plugged into and matched with the rear end of the boring bar 23 by a pair of plug rods 32, a plurality of limit plates 33 are uniformly and movably mounted on the fixed plate 30 along its circumference, and two groups of extrusion members 7 are provided on the limit plates 33, a plurality of limit columns 34 are installed along the circumference of the front end of the fixed plate 30, a pushing plate 35 located in front of the limit columns 34 is fixedly mounted on the limit plate 33, and the pushing plate 35 is located between the two groups of extrusion members 7, a linkage part 5 is provided between the driving part and the support rod 31 for making the support rod 31 move synchronously with the boring bar 23, and an execution part 4 and a locking part 6 for secondary fixing the limit plate 33 as the support rod 31 moves are provided on the rear side of the fixed plate 30.

[0032] like Figure 1 、 Figure 2 and Figure 3 As shown, the driving part includes a linear module 20 fixedly mounted on the upper end of the workbench 10, the moving section of the linear module 20 is fixedly mounted with a spindle box 21, the output shaft of the spindle box 21 is fixedly mounted with a three-jaw chuck 22, and the boring bar 23 is clamped and fixed by the three-jaw chuck 22.

[0033] like Figure 1 、 Figure 2 and Figure 3As shown, a fixed seat 300 is fixedly installed on the workbench 10, and a through hole coaxial with the boring bar 23 is provided on the fixed seat 300. The fixed plate 30 is fixedly installed in the through hole of the fixed seat 300. A U-shaped notch corresponding to the limit plate 33 is provided on the fixed plate 30. The U-shaped notch extends radially along the fixed plate 30, and the limit plate 33 is movably installed in the corresponding U-shaped notch.

[0034] like Figures 1 to 6 As shown, during the specific work, two vises 11 are placed on the workbench 10, and then the front axle is placed on the two vises 11. The front axle is manually moved to the corresponding position of the support mechanism 3. The limiting plate 33 is first driven by the execution part 4 to squeeze and align the processing area of ​​the front axle. At this time, the squeezing state is maintained, and the front axle is clamped and fixed by the vise 11, and then the vise 11 is fixed to the workbench 10.

[0035] Then, the clamping of the limit plate 33 on the front axle is released first, and the linear module 20 drives the boring bar 23 to move through the spindle box 21 and the three-jaw chuck 22, so that the rear end of the boring bar 23 contacts the front end of the support rod 31, and the insert rod 32 is inserted into the boring bar 23. After that, the executive part 4 drives the limit plate 33 to move toward the front axle to squeeze and support the front axle, and pushes the front axle to fit tightly against the limit column 34 through the pushing plate 35 to achieve vibration reduction support for the front axle processing area, and at the same time, the support rod 31 and the boring bar 23 are radially squeezed and supported by the extrusion member 7, thereby improving the stability of the boring bar 23 from many aspects.

[0036] Then the spindle box 21 drives the boring bar 23 to rotate through the three-jaw chuck 22, and the boring bar 23 will drive the support rod 31 to rotate synchronously through the insert rod 32. During the rotation of the boring bar 23, the linear module 20 will drive the boring mechanism 2 to move toward the front axle, and before the boring tool 24 contacts the front axle, the support rod 31 will fix the limit plate 33 for a second time through the locking part 6 to ensure the support of the limit plate 33 to the front axle, and the stability of the support of the boring bar 23 and the support rod 31 by the extrusion part 7.

[0037] Afterwards, the boring tool 24 is fed at a uniform speed to bore and repair the kingpin hole of the front axle. During the boring process, the extrusion member 7 always maintains a firm support for the boring rod 23 and the support rod 31, thereby improving the stability of the support rod 31 and the boring rod 23 between the two groups of extrusion members 7, reducing the vibration of the boring rod 23, and thus improving the quality of the boring processing of the front axle. After the kingpin hole at one end of the front axle is processed, the support limit of the front axle is released, and then the fixation of the front axle by the vise 11 is released, and then the front axle is flipped so that the other end is in the processing area, and the limit is adjusted by the support mechanism 3, and then it is fixed by the vise 11, and the above operation is repeated to perform the boring processing of the kingpin hole at this end.

[0038] like Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, the execution part 4 includes an inclined groove 40, and an inclined groove 40 is provided on the two opposite inner walls of each U-shaped groove of the fixed seat 300. The end of the inclined groove 40 away from the center of the fixed plate 30 is inclined forward, and a guide column 41 that slides with the corresponding two inclined grooves 40 is installed on the limit plate 33, and a push-pull member 42 is provided on the fixed seat 300.

[0039] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the push-pull member 42 includes a guide rod 420, and a movable seat 421 is slidably installed on the rear side of the fixed seat 300 through a pair of guide rods 420. The movable seat 421 is slidably connected to the upper end of the workbench 10, and a through hole coaxial with the boring hole is also provided on the movable seat 421. A movable disk 422 is fixedly installed in the through hole on the movable seat 421, and a U-shaped groove is also provided at the position corresponding to the movable disk 422 and the limit plate 33. The limit plate 33 is movably installed in the corresponding U-shaped groove on the movable seat 421.

[0040] like Figure 5 and Figure 6 As shown, linear waist grooves 423 are provided on two opposite inner walls of the U-shaped notch on the movable plate 422 , and rollers 424 that slide in cooperation with the two corresponding waist grooves 423 are installed on the limiting plate 33 .

[0041] like Figure 2 and Figure 3 As shown, a hydraulic cylinder 425 is fixedly installed at the front end of the fixed seat 300 , and the telescopic section of the hydraulic cylinder 425 slides through the fixed seat 300 and is fixedly connected to the movable seat 421 .

[0042] like Figure 2 、 Figure 3 and Figure 4 As shown, the extrusion member 7 includes an extrusion plate 70 , and the extrusion plate 70 is fixedly mounted on one end of the limit plate 33 close to the center of the fixed disk 30 . The extrusion plate 70 is in rolling friction contact with the support rod 31 and the boring bar 23 .

[0043] like Figures 1 to 6As shown, during operation, the hydraulic cylinder 425 pushes the movable plate 422 to move backward through the movable seat 421, and the movable plate 422 drives the limit plate 33 to move backward through the roller 424 and the waist groove 423. The limit plate 33 moves backward and drives the guide post 41 to move at the same time. Since the guide post 41 moves along the inclined groove 40, the guide post 41 has a backward displacement and a radial displacement along the fixed plate 30, wherein the radial displacement along the fixed plate 30 causes the limit plate 33 to move forward. The bridge moves, and finally the limiting plate 33 contacts the outer wall of the front axle kingpin hole. At the same time, the limiting plate 33 drives the pushing plate 35 to contact the front end surface of the front axle kingpin hole, but does not block the kingpin hole, so that the rear end surface of the front axle is in close contact with the front end surface of the limiting column 34. The pushing plate 35 and the limiting column 34 cooperate to limit the front and rear freedom of the front axle. At the same time, the extrusion plates 70 in the two groups of extrusion parts 7 are driven by the limiting plates 33 to radially squeeze and fix the support rod 31 and the boring bar 23 respectively (as shown in FIG. Figure 6 As shown), the stability of the support rod 31 and the boring bar 23 between the two groups of extrusions 7 is improved, and the force points of the support rod 31 and the boring bar 23 are increased, thereby improving the quality of the front axle boring process.

[0044] After the kingpin hole at one end of the front axle is processed, the hydraulic cylinder 425 pulls the moving plate 422 forward through the moving seat 421. With the cooperation of the roller 424 and the waist groove 423 and the matching of the guide column 41 and the inclined groove 40, the limit plate 33 moves forward and moves radially away from the front axle. At the same time, the extrusion support of the extrusion plate 70 on the support rod 31 and the boring rod 23 is released, and the pushing plate 35 is away from the front axle. Then the boring mechanism 2 drives the boring rod 23 to disengage from the support rod 31. At this time, the front axle can be disassembled and replaced to continue the boring process.

[0045] like Figure 2 、 Figure 5 and Figure 6 As shown, the locking portion 6 includes a slip ring 60, and the slip ring 60 located between the fixed disk 30 and the movable disk 422 is rotatably installed on the support rod 31. A locking rod 61 corresponding to the limit plate 33 is fixedly installed at the rear end of the slip ring 60. A rectangular plate 62 located on the rear side of the movable disk 422 is fixedly installed at one end of the limit plate 33 close to the center of the movable disk 422, and the locking rod 61 slides through the movable disk 422 and the corresponding rectangular plate 62.

[0046] like Figure 1 、 Figure 2 and Figure 5As shown, the linkage part 5 includes a shaft seat 50, and the rear end of the support rod 31 is movable through the movable disk 422 and then rotatably installed with the shaft seat 50, and the front end of the shaft seat 50 is fixedly installed with a sliding rod that slides through the fixed seat 300, and the sliding rod is provided with a tension spring 51 that is fixedly connected to the fixed seat 300 and the shaft seat 50 at the front and rear ends respectively, and a pair of push rods 52 are fixedly installed on the main spindle box 21, and the front end of the shaft seat 50 is provided with a circular groove that corresponds one to one with the push rod 52.

[0047] like Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, during operation, after the support rod 31 and the boring bar 23 are connected through the insertion rod 32, the push rod 52 is inserted into the circular groove, and the rear end of the push rod 52 contacts the inner wall of the circular groove (as shown in FIG. Figure 5 As shown); when the spindle box 21 drives the boring bar 23 to rotate through the three-jaw chuck 22, the linear module 20 drives the spindle box 21, the three-jaw chuck 22 and the rotating boring bar 23 to feed backward, and the boring bar 23 pushes the support rod 31 to move backward. The spindle box 21 pushes the shaft seat 50 to move backward through the push rod 52 and the circular groove. The shaft seat 50 will drive the support rod 31 to move backward together, avoiding relying solely on the boring bar 23 to push the support rod 31 to move backward. When the support rod 31 and the boring bar 23 move backward, the extrusion plate 70 is in rolling friction contact with the support rod 31 and the boring bar 23; the shaft seat 50 moves backward and also stretches the tension spring 51. The rebound force of the tension spring 51 makes The circular groove on the shaft seat 50 remains in close contact with the push rod 52, thereby ensuring that the support rod 31 and the boring bar 23 can always move smoothly and synchronously; the backward movement of the support rod 31 will drive the slip ring 60 to move backward synchronously, and drive the locking rod 61 to slide through the corresponding rectangular plate 62 to perform secondary fixation on the limit plate 33 (the limit plate 33 cannot move radially), so that the limit plate 33 stably contacts the outer wall of the front axle kingpin hole position, and then the pushing plate 35 stably contacts the front end surface of the front axle kingpin hole position, the front axle and the limit column 34 are stably in close contact, and the extrusion plate 70 radially and stably squeezes and fixes the support rod 31 and the boring bar 23.

[0048] When the secondary fixation is completed, the boring tool 24 does not contact the front axle, and then the boring bar 23 continues to move backward, and the locking rod 61 continues to move backward along the rectangular plate 62 and maintains the plug-in fit with the rectangular plate 62, and the boring tool 24 will contact the front axle for cutting, and the boring bar 23 drives the boring tool 24 to feed smoothly and uniformly for boring. During the process, the extrusion plate 70 always maintains radial extrusion on the support rod 31 and the boring bar 23 to improve the stability of the support rod 31 and the boring bar 23. In addition, the limit plate 33 also continuously applies supporting force to the outer wall of the front axle processing area, and the pushing plate 35 maintains a stable end face pressure on the front axle to ensure the stability of the front axle processing area, thereby reducing the vibration of the boring bar 23 and the workpiece, and ensuring the processing accuracy and surface quality of the kingpin hole.

[0049] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0050] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature designated as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0052] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vehicle front axle boring device, comprising a workbench, a boring mechanism mounted thereon, and two vises; the boring mechanism comprises a driving unit and a boring bar mounted thereon, a boring tool being mounted on the boring bar, characterized in that: The workbench is provided with a support mechanism located at the rear side of the boring mechanism; The support mechanism includes a fixed plate fixedly mounted on the upper end of the workbench and coaxial with the boring bar, a plurality of limit plates are uniformly and movably mounted on the fixed plate along its circumference, two sets of extrusion members are provided on the limit plates, a plurality of limit columns are installed along the circumference of the front end of the fixed plate, and a pushing plate is fixedly mounted on the limit plate; A support rod is coaxially movably mounted on the fixed plate, and the support rod is plugged into the boring bar through a pair of plug rods; A linkage part is provided between the driving part and the support rod for making the support rod move synchronously with the boring bar. An execution part and a locking part for secondary fixing the limit plate as the support rod moves are provided on the rear side of the fixed plate. When boring, the support rod and the boring bar are first plugged into each other to form an axially through support body, and then the executive part drives multiple limit plates to synchronously clamp the outer wall of the front axle processing section, and at the same time drives the pushing plate to push the front axle and the limit column to fit tightly, thereby realizing the circumferential wrapping constraint of the front axle processing section and the support and vibration prevention on both sides of the end face, and the limit plate also drives the extrusion part to implement radial rolling constraint and vibration prevention on the support rod and the boring bar.

2. The automobile front axle boring device according to claim 1, characterized in that: A fixed seat is fixedly installed on the workbench, and a through hole coaxial with the boring bar is opened on the fixed seat. The fixed plate is fixedly installed in the through hole of the fixed seat, and a U-shaped notch corresponding to the limit plate is opened on the fixed plate. The limit plate is movably installed in the corresponding U-shaped notch.

3. The automobile front axle boring device according to claim 2, characterized in that: The execution part includes two inclined grooves on the inner walls opposite to each other corresponding to the U-shaped notch of the fixed seat. The end of the inclined groove away from the center of the fixed disk is inclined forward. A guide column is installed on the limit plate to slide with the corresponding two inclined grooves, and a push-pull member is provided on the fixed seat.

4. The automobile front axle boring device according to claim 3, characterized in that: The push-pull member includes a movable seat slidably installed on the rear side of the fixed seat through a pair of guide rods. The movable seat is also provided with a through hole coaxial with the boring hole. A movable plate is fixedly installed in the through hole on the movable seat. U-shaped grooves are also provided at positions corresponding to the movable plate and the limit plate. The limit plate is movably installed in the corresponding U-shaped groove on the movable seat.

5. The automobile front axle boring device according to claim 4, characterized in that: The linkage part includes a shaft seat rotatably installed behind the rear end of the support rod that movably passes through the movable disk, a sliding rod that slides through the fixed seat is fixedly installed on the front end of the shaft seat, and a tension spring is provided on the sliding rod that is fixedly connected to the fixed seat and the shaft seat at the front and rear ends respectively; a pair of push rods are fixedly installed on the main spindle box, and the front end of the shaft seat is provided with a circular groove that corresponds to the push rod one by one.

6. The automobile front axle boring device according to claim 4, characterized in that: The locking part includes a slip ring rotatably mounted on the support rod and located between the fixed disk and the movable disk. A locking rod corresponding to the limit plate is fixedly mounted at the rear end of the slip ring. A rectangular plate located at the rear side of the movable disk is fixedly mounted at one end of the limit plate close to the center of the movable disk. The locking rod slides through the movable disk and the corresponding rectangular plate.

7. The automobile front axle boring device according to claim 4, characterized in that: Two opposite inner walls of the U-shaped notch on the moving plate are both provided with linear waist grooves, and rollers which are slidably matched with the two corresponding waist grooves are installed on the limiting plate.

8. The automobile front axle boring device according to claim 1, characterized in that: The extrusion piece includes an extrusion plate. The extrusion plate is fixedly installed on one end of the limit plate close to the center of the fixed disk. The extrusion plate is in rolling friction contact with the support rod and the boring bar.

9. The automobile front axle boring device according to claim 1, characterized in that: The driving part includes a linear module fixedly mounted on the upper end of the workbench, the moving section of the linear module is fixedly mounted on the spindle box, the output shaft of the spindle box is fixedly mounted on a three-jaw chuck, and the boring bar is clamped and fixed by the three-jaw chuck.

10. The automobile front axle boring device according to claim 4, characterized in that: A hydraulic cylinder is fixedly installed at the front end of the fixed seat, and the telescopic section of the hydraulic cylinder slides through the fixed seat and is fixedly connected to the movable seat.

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