A rotary supporting device for axle housing drilling

Abstract

The application discloses a rotary supporting device for axle housing drilling, which comprises a bottom plate, two sets of flat plate supporting assemblies, two sets of positioning supporting assemblies and two sets of driving assemblies. The two sets of flat plate supporting assemblies are symmetrically arranged on the bottom plate and used for supporting the axle housing plate spring seat and making the drilling surface of the axle housing plate spring seat vertical. The two sets of positioning supporting assemblies are respectively arranged on the flat plate supporting assemblies and used for supporting the outer cylindrical body of the axle housing plate spring seat. The two sets of driving assemblies are symmetrically arranged on the bottom plate and respectively connected with the two sets of flat plate supporting assemblies in transmission, used for moving to the middle part of the axle housing along the horizontal direction after the axle housing plate spring seat is positioned, clamping and positioning the axle housing, and further configured to drive the axle housing to rotate after the axle housing is clamped, so that the drilling surface of the axle housing plate spring seat or the drilling surface of the axle housing tooth package shell body faces upward. The device realizes multi-surface rotary machining after one-time clamping of the axle housing, and improves machining precision and efficiency.

Description

Technical Field

[0001] This invention relates to the field of machining equipment, and more specifically to a rotary support device for drilling bridge housings. Background Technology

[0002] During the machining of the axle housing, it is necessary to drill holes in its leaf spring seat and wheel hub housing. Due to the complex structure of the axle housing, which includes multiple components such as the wheel hub housing, square half-shaft sleeve, leaf spring seat, and wheel end flange, the surfaces to be machined are not on the same plane. Therefore, how to efficiently and accurately drill holes in different positions is the key to improving the machining efficiency and quality of the axle housing.

[0003] Existing technologies often employ fixed fixtures or segmented positioning methods, which require the bridge housing to be disassembled and repositioned multiple times when different surfaces need to be rotated for machining. This is not only cumbersome but also makes it difficult to guarantee the positional accuracy between different machining surfaces, affecting machining efficiency and quality. Summary of the Invention

[0004] The main objective of this application is to provide a rotary support device for drilling bridge housings, which solves the technical problem in the prior art that when the bridge housing needs to be rotated to process different surfaces, it must be disassembled and repositioned multiple times, resulting in cumbersome operation and difficulty in ensuring the positional accuracy between different processing surfaces. It has the beneficial effects of accurate positioning, enabling one-time clamping and processing of multiple surfaces, and improving processing efficiency and quality.

[0005] According to the present invention, a rotary support device for drilling axle housings is provided, comprising a base plate; two sets of flat plate support assemblies symmetrically disposed on the base plate for supporting axle housing leaf spring seats and ensuring the surface of the leaf spring seats to be drilled is vertical; two sets of positioning support assemblies respectively disposed on the two sets of flat plate support assemblies for supporting the outer cylindrical body of the axle housing leaf spring seats; and two sets of drive assemblies symmetrically disposed on the base plate and respectively connected to the two sets of flat plate support assemblies for transmission. The drive assemblies are used to fix the axle housing wheel end flange so that after the axle housing leaf spring seats are positioned by the flat plate support assemblies and the positioning support assemblies, they move horizontally toward the center of the axle housing and clamp the positioned axle housing. The drive assembly is also configured to: drive the axle housing to rotate after clamping it, so that the surface of the axle housing leaf spring seat to be drilled or the surface of the axle housing jaw casing to be drilled faces upward; wherein, the flat plate support assembly includes a support part, a vertical moving part, and a linkage part, the support part is used to contact and support the axle housing leaf spring seat, the vertical moving part is used to move the support part up and down in the vertical direction; the linkage part is connected to the drive assembly and is configured to: when the drive assembly moves horizontally towards the center of the axle housing, the linkage part moves the support part away from the axle housing leaf spring seat; when the drive assembly resets, the linkage part resets the support part upward to avoid the axle housing during rotational machining.

[0006] Furthermore, the support portion includes a mounting base and a horizontal seat disposed on the upper surface of the mounting base for contacting the axle housing leaf spring seat; the vertical moving portion includes a column disposed on the base plate, a vertical guide rail disposed on the column, and a vertical slider slidably engaged with the vertical guide rail, the mounting base being disposed on the vertical slider; the linkage portion includes a first wedge disposed on the vertical slider, a push rod horizontally slidably disposed on the column, a fixed seat connected to the inner end of the push rod, and a second wedge connected to the fixed seat and engaging with the first wedge, the outer end of the push rod being connected to the drive assembly.

[0007] Furthermore, the push rod slides horizontally through a sliding sleeve provided on the column.

[0008] Furthermore, the positioning support assembly includes a support seat disposed on the column, the upper surface of the support seat having an arc-shaped groove, and the inner wall of the arc-shaped groove being provided with a plurality of balls to form a rolling cavity that matches the radius of the outer cylindrical body of the bridge housing leaf spring seat.

[0009] Furthermore, the support base is also provided with a mounting cavity, which is located below the rolling cavity and connected through a through hole. An electromagnetic plate is provided in the mounting cavity. The electromagnetic plate is configured to: be energized to attract the outer cylindrical body of the axle housing leaf spring seat when the drive assembly is not in contact with the axle housing wheel end flange, and be de-energized when the drive assembly is in contact with the axle housing wheel end flange.

[0010] Furthermore, the drive assembly includes two horizontal guide rails disposed on the base plate, a horizontal slider that slides together with the two horizontal guide rails, and a horizontal telescopic cylinder disposed on the base plate and connected to the horizontal slider; the outer end of the push rod is connected to the horizontal slider; the horizontal slider is provided with a drive motor and a connecting seat, a rotating roller is rotatably connected to the connecting seat, the outer end of the rotating roller is connected to the drive motor through a drive unit, and the inner end of the rotating roller is provided with a mating seat for mating with the wheel end flange of the axle housing, and the mating seat is provided with inserts for correspondingly inserting into the wheel end flange holes of the axle housing.

[0011] Furthermore, the base plate is also provided with a follow-up back support assembly, which is used to support the bottom of the axle housing and the dental housing, and continuously abuts against the bottom of the axle housing and the dental housing during the rotation of the axle housing.

[0012] Furthermore, the follower back support assembly includes two mounting brackets symmetrically arranged on the base plate. Each of the two mounting brackets has an arc-shaped guide rail that matches the rotation path of the axle housing on its opposite side. A follower slider is fitted between the two arc-shaped guide rails. The follower slider is equipped with a vertical telescopic cylinder. The telescopic end of the vertical telescopic cylinder is equipped with an electromagnetic arc seat that matches the bottom surface of the axle housing jaw housing. The electromagnetic arc seat is configured to maintain adsorption on the bottom surface of the axle housing jaw housing during the rotation of the axle housing. An electromagnetic seat is provided at the bottom of the follower slider. The electromagnetic seat is used to adsorb onto the base plate when not in motion to lock the position of the follower slider.

[0013] Compared with the prior art, the beneficial effects of the present invention are: In the rotary support device for drilling bridge housing as described in this invention, by setting up symmetrical plate support components, positioning support components and drive components, precise constraints on the bridge housing in the vertical, front-back and left-right directions are achieved, so that the position coordinates of each component of the bridge housing relative to the external processing equipment can be unified in one clamping.

[0014] After completing the positioning and clamping, the drive assembly can directly drive the bridge housing to rotate around its axis, allowing different drilling surfaces (such as the leaf spring seat surface or the jaw housing surface) to rotate sequentially to a horizontally upward machining position. More importantly, through the transmission connection between the linkage and the drive assembly, as the drive assembly moves towards the center to complete the clamping process, the linkage can automatically move the support part of the plate support assembly downwards, ensuring that it avoids the bridge housing's movement path during subsequent bridge housing rotation, thus avoiding the tedious operation of manually dismantling or adjusting the support structure.

[0015] This technical solution ensures continuous and precise machining of multiple drilling surfaces at different positions in a single clamping state, fundamentally solving the problems of cumbersome operation and poor positioning accuracy caused by multiple disassembly and assembly, and greatly improving machining efficiency and quality. Attached Figure Description

[0016] Figure 1 A schematic structural diagram of a rotary support device for drilling bridge housings provided in this application embodiment; Figure 2 Rotary support device as an embodiment of this application Figure 1 A magnified view of the structure of part A; Figure 3 This is a schematic structural diagram of the positioning support assembly of the rotary support device according to an embodiment of this application; Figure 4 This is a schematic structural diagram of the follower back support assembly of the rotary support device according to an embodiment of this application; Reference numerals: 10, base plate; 20, flat plate support assembly; 21, support part; 211, mounting base; 212, horizontal seat; 22, vertical moving part; 221, column; 222, vertical guide rail; 223, vertical slider; 23, linkage part; 231, first wedge; 232, push rod; 233, fixed seat; 234, second wedge; 235, sliding sleeve; 30, positioning support assembly; 31, support seat; 311, arc-shaped groove; 312, rolling cavity; 3 13. Mounting cavity; 314. Through hole; 32. Ball bearing; 33. Electromagnetic plate; 40. Drive assembly; 41. Horizontal guide rail; 42. Horizontal slider; 43. Horizontal telescopic cylinder; 44. Drive motor; 45. Connecting seat; 46. Rotating roller; 47. Drive unit; 48. Docking seat; 49. Insertion post; 50. Follower back support assembly; 51. Mounting bracket; 52. Arc guide rail; 53. Follower slider; 54. Vertical telescopic cylinder; 55. Electromagnetic arc seat; 56. Electromagnetic seat. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The present invention will be further described with reference to the accompanying drawings and embodiments.

[0018] In the machining scenario of the axle housing, the axle housing consists of, from the middle to both ends, the axle housing jaw housing, the square half-shaft sleeve, the axle housing leaf spring seat (two symmetrically distributed at one end), the outer cylindrical body of the axle housing leaf spring seat, and the axle housing wheel end flange. The rotary support device of this application is used for drilling the axle housing leaf spring seat and the axle housing jaw housing. Using the machining coordinate system of the external drilling equipment as a reference, when the axle housing is clamped on the rotary support device of this application, the axis extending left and right of the axle housing is defined as the X-axis direction, the front-back direction of the axle housing is defined as the Y-axis direction, and the vertical direction is defined as the Z-axis direction. The directional terms "left," "right," "front," "back," "inner," and "outer" mentioned in this application are all based on the posture of the axle housing after clamping: "inner" refers to the direction closer to the center of the axle housing (i.e., the middle position where the axle housing jaw housing is located), and "outer" refers to the direction closer to the end where the axle housing wheel end flange is located.

[0019] like Figure 1 As shown, the rotary support device includes a base plate 10, two sets of flat plate support assemblies 20, two sets of positioning support assemblies 30, and two sets of drive assemblies 40.

[0020] The base plate 10 is mounted on the ground or workbench to support the remaining components. Two sets of flat plate support assemblies 20 are symmetrically arranged on the base plate 10 to support the axle housing leaf spring seat and ensure that the surface of the axle housing leaf spring seat to be drilled is vertical. Two sets of positioning support assemblies 30 are respectively mounted on the two sets of flat plate support assemblies 20 to support the outer cylindrical body of the axle housing leaf spring seat. Two sets of drive assemblies 40 are symmetrically arranged on the base plate 10 and are respectively connected to the two sets of flat plate support assemblies 20 for transmission. The drive assembly 40 is used to fix the axle housing wheel end flange so that after the axle housing leaf spring seat is positioned by the flat plate support assembly 20 and the positioning support assembly 30, it moves horizontally towards the center of the axle housing and clamps the positioned axle housing. The drive assembly 40 is also configured to drive the axle housing to rotate after clamping the axle housing, so that the surface of the axle housing leaf spring seat to be drilled or the surface of the axle housing jaw casing to be drilled faces upward.

[0021] like Figure 2 As shown, the flat plate support assembly 20 includes a support part 21, a vertical moving part 22, and a linkage part 23.

[0022] The support part 21 includes a mounting base 211 and a horizontal seat 212 disposed on the upper surface of the mounting base 211. The horizontal seat 212 is used to contact the axle housing leaf spring seat. The vertical moving part 22 includes a column 221 disposed on the base plate 10, a vertical guide rail 222 disposed on the column 221, and a vertical slider 223 that slides with the vertical guide rail 222. The mounting base 211 is disposed on the vertical slider 223. The linkage part 23 includes a first wedge 231 disposed on the vertical slider 223, a push rod 232 that slides horizontally on the column 221, a fixed seat 233 connected to the inner end of the push rod 232, and a second wedge 234 connected to the fixed seat 233 and cooperating with the first wedge 231. The outer end of the push rod 232 is connected to the drive assembly 40.

[0023] In one embodiment, the push rod 232 slides horizontally through a sliding sleeve 235 provided on the column 221. The sliding sleeve 235 is fixed to the column 221, and the push rod 232 passes through the sliding sleeve 235 and can slide horizontally therein, thereby ensuring the stability of the reciprocating motion trajectory of the push rod 232.

[0024] like Figure 3 As shown, the positioning support assembly 30 includes a support seat 31 disposed on the column 221. An arc-shaped groove 311 is formed on the upper surface of the support seat 31. A plurality of balls 32 are provided on the inner wall of the arc-shaped groove 311 to form a rolling cavity 312 that matches the radius of the outer cylindrical body of the bridge housing leaf spring seat.

[0025] During the overall clamping process, the lower end face of the bridge housing leaf spring seat is placed directly on the upper surface of the horizontal seat 212, making the surface of the bridge housing leaf spring seat to be drilled vertical. This determines the position of the bridge housing in the Z-axis direction, i.e., the vertical position of the bridge housing before machining. At the same time, the outer cylindrical body of the bridge housing leaf spring seat is embedded in the rolling cavity 312. The arc-shaped contour of the rolling cavity 312 matches the radius of the outer cylindrical body of the bridge housing leaf spring seat. Through the contact and limiting of the outer cylindrical body of the bridge housing leaf spring seat by the rolling cavity 312, combined with the support of the horizontal seat 212 for the bridge housing leaf spring seat, the position of the bridge housing in the Y-axis direction is determined, i.e., the front-back position of the bridge housing before machining.

[0026] like Figure 1 As shown, the drive assembly 40 includes two horizontal guide rails 41 mounted on the base plate 10, a horizontal slider 42 that slides together with the two horizontal guide rails 41, and a horizontal telescopic cylinder 43 mounted on the base plate 10 and connected to the horizontal slider 42. The telescopic end of the horizontal telescopic cylinder 43 is connected to the horizontal slider 42, and the telescopic action of the horizontal telescopic cylinder 43 directly drives the horizontal slider 42 to reciprocate along the two horizontal guide rails 41. The outer end of the push rod 232 is connected to the horizontal slider 42, thereby realizing the transmission connection between the linkage 23 and the drive assembly 40. The horizontal slider 42 is equipped with a drive motor 44 and a connecting seat 45. A rotating roller 46 is rotatably connected to the connecting seat 45, and the rotation axis of the rotating roller 46 is parallel to the axis after the bridge housing is clamped. The outer end of the rotating roller 46 is connected to the drive motor 44 through a drive unit 47, which is used to transmit the rotational power of the drive motor 44 to the rotating roller 46. The inner end of the rotating roller 46 is provided with a docking seat 48 for docking with the wheel end flange of the axle housing, and the docking seat 48 is provided with a pin 49 for corresponding insertion into the wheel end flange hole of the axle housing.

[0027] The following combination Figures 1 to 3 This section describes the overall operation of the rotary support device. First, the axle housing is placed on the device: the axle housing leaf spring seat is placed on the horizontal seat 212, and the outer cylindrical body of the axle housing leaf spring seat is embedded in the rolling cavity 312. At this point, the axle housing is initially positioned in both the Z-axis and Y-axis directions. Then, two sets of horizontal telescopic cylinders 43 are activated. The telescopic ends of the horizontal telescopic cylinders 43 extend, pushing the horizontal slider 42 along the horizontal guide rail 41 towards the center of the axle housing. The horizontal slider 42 drives the drive motor 44, connecting seat 45, rotating roller 46, docking seat 48, and insert pins 49 to move synchronously towards the center until the docking seat 48 contacts the axle housing wheel end flange, and the insert pins 49 are inserted into the corresponding holes in the axle housing wheel end flange. At this point, the position of the axle housing in the X-axis direction is also determined, and the coordinates of each position of the axle housing are unified with the machining coordinates of the external machining equipment, meaning the axle housing automatically reaches the machining position.

[0028] More importantly, as the horizontal slider 42 moves towards the center, it pushes the push rod 232 to slide horizontally inward through the sliding sleeve 235. The push rod 232 drives the fixed seat 233 and the second wedge 234 to move inward simultaneously. The inclined surface of the second wedge 234 slides relative to the inclined surface of the first wedge 231. As the second wedge 234 moves inward, the first wedge 231 moves downward in the vertical direction. The vertical slider 223 slides downward along the vertical guide rail 222, and the mounting seat 211 and the horizontal seat 212 descend accordingly, causing the horizontal seat 212 to move away from the axle housing leaf spring seat until the horizontal seat 212 is completely separated from the axle housing leaf spring seat. At this time, the axle housing is completely supported by the rolling cavity 312 of the drive assembly 40 and the positioning support assembly 30. The support part 21 of the flat plate support assembly 20 no longer contacts the axle housing leaf spring seat, thus avoiding the movement path of the axle housing during subsequent axle housing rotation processing. When reset is required, the horizontal telescopic cylinder 43 retracts, the horizontal slider 42 moves outward, the push rod 232 slides outward accordingly, and the second wedge 234 moves outward. Its inclined surface pushes the first wedge 231 upward, causing the vertical slider 223, mounting base 211, and horizontal seat 212 to reset upward. As can be seen from the above action process, this application automatically converts the horizontal driving motion of the drive assembly 40 into the vertical avoidance motion of the support part 21 through the inclined surface cooperation between the first wedge 231 and the second wedge 234. This eliminates the need for a separate power source for the flat plate support assembly 20, enabling the support part 21 to automatically descend and avoid obstacles after clamping and automatically rise and return to its original position during reset.

[0029] The core design of the aforementioned linkage mechanism lies in the fact that the horizontal telescopic cylinder 43, as the sole horizontal drive source of the drive assembly 40, simultaneously performs the clamping action and, through the mechanical transmission linkage between the push rod 232 and the linkage part 23, completes the synchronous descent and avoidance of the support part 21. This allows the support part 21 to automatically disengage from the axle housing leaf spring seat at the same instant the operator activates the horizontal telescopic cylinder 43 to complete the clamping of the axle housing, without any additional operating steps or independent drive devices, thus avoiding motion interference between the horizontal seat 212 and the axle housing leaf spring seat during rotary machining. Simultaneously, during the machining process and the resetting of the horizontal telescopic cylinder 43, the support part 21 automatically rises back to its initial support position, preparing for the next clamping operation.

[0030] In one embodiment, the electromagnetic plate 33 of the positioning support assembly 30 is described in detail. This embodiment is a functional enhancement of the aforementioned positioning support assembly 30: the support base 31 also has a mounting cavity 313, which is located below the rolling cavity 312 and is connected to it through a through hole 314. The electromagnetic plate 33 is provided inside the mounting cavity 313. The electromagnetic plate 33 is configured such that when the drive assembly 40 is not in contact with the axle housing wheel end flange, the electromagnetic plate 33 generates an electromagnetic attraction force on the outer cylindrical body of the axle housing leaf spring seat in the rolling cavity 312 through the through hole 314, so that the outer cylindrical body of the axle housing leaf spring seat is stably attracted to the arc-shaped inner wall of the rolling cavity 312, further ensuring the positional certainty of the axle housing in the initial clamping stage (i.e., before the horizontal slider 42 has moved to contact the axle housing wheel end flange). When the drive assembly 40 connects to the wheel end flange of the axle housing, that is, after the mating seat 48 abuts against the wheel end flange of the axle housing and the insert 49 is inserted into the wheel end flange hole of the axle housing, the electromagnetic plate 33 is de-energized. At this time, the X-axis positioning of the axle housing has been completed by the drive assembly 40. The de-energization of the electromagnetic plate 33 helps to reduce the electromagnetic frictional resistance between the ball 32 in the rolling cavity 312 and the outer cylindrical body of the axle housing leaf spring seat during the subsequent rotational machining of the axle housing, making the rotation of the axle housing smoother. By using electromagnetic adsorption in conjunction with the ball 32, the electromagnetic force is used to improve the firmness and stability of the positioning during the positioning stage of the axle housing, and the electromagnetic resistance is removed by de-energizing during the rotational machining stage of the axle housing, thus balancing positioning reliability and rotational flexibility.

[0031] Furthermore, the following description will focus on the follower back support assembly 50. During the rotational machining of the axle housing, the central axle housing jaw casing will be subjected to cutting stress due to being suspended, which can easily cause vibration or deformation. To address this, the base plate 10 is also provided with a follower back support assembly 50 that supports the bottom of the axle housing jaw casing, and this follower back support assembly 50 continuously abuts against the bottom of the axle housing jaw casing during the rotation of the axle housing.

[0032] like Figure 4As shown, the follower back support assembly 50 includes two mounting brackets 51 symmetrically arranged on the base plate 10. Each mounting bracket 51 has an arc-shaped guide rail 52 on its opposite side, matching the rotation path of the axle housing. A follower slider 53 is fitted between the two arc-shaped guide rails 52, and the follower slider 53 can slide in an arc along the arc-shaped guide rail 52. A vertical telescopic cylinder 54 is provided on the follower slider 53, and the telescopic end of the vertical telescopic cylinder 54 is provided with an electromagnetic arc seat 55 that matches the bottom surface of the axle housing jaw casing. The upper surface of the electromagnetic arc seat 55 has an arc-shaped surface that matches the curvature of the bottom surface of the axle housing jaw casing to ensure the fit between the electromagnetic arc seat 55 and the bottom surface of the axle housing jaw casing. The electromagnetic arc seat 55 is configured to maintain its adsorption to the bottom surface of the axle housing jaw casing during the rotation of the axle housing, so that the electromagnetic arc seat 55 always follows the movement of the bottom surface of the axle housing jaw casing. The bottom of the follower slider 53 is provided with an electromagnetic seat 56, which is used to attach to the base plate 10 when not in motion to lock the position of the follower slider 53.

[0033] In actual processing, after the bridge housing is clamped and positioned by the drive assembly 40, before the drive motor 44 is started to rotate the bridge housing, the vertical telescopic cylinder 54 is activated, lifting the electromagnetic arc seat 55 upwards until it contacts the bottom surface of the bridge housing jaw shell. The electromagnetic arc seat 55 is energized and attracts the bottom surface of the bridge housing jaw shell. Subsequently, the drive motor 44 is started to drive the bridge housing to rotate, for example, rotating 90° clockwise so that one of the bridge housing leaf spring seats at one end faces upwards, or rotating 90° counterclockwise so that the other bridge housing leaf spring seat at one end faces upwards. During the rotation of the bridge housing, the electromagnetic arc seat 55 maintains its attraction to the bottom surface of the bridge housing jaw shell. The follower slider 53 slides synchronously along the arc-shaped guide rail 52 under the drive of the electromagnetic arc seat 55, thereby ensuring that the electromagnetic arc seat 55 continuously abuts and supports the bottom of the bridge housing jaw shell during the rotation of the bridge housing. The curvature of the arc-shaped guide rail 52 matches the movement trajectory of the bottom surface of the bridge housing jaw shell during the rotation of the bridge housing, so that the follower slider 53 can smoothly follow the movement of the bridge housing jaw shell along the arc-shaped guide rail 52. Once the bridge housing is rotated to the machining angle, the electromagnetic base 56 is energized and adsorbs onto the base plate 10, locking the position of the follower slider 53. This keeps the electromagnetic arc seat 55 in the corresponding position, continuing to provide stable support and reaction force to the bridge housing jaw shell to resist the cutting stress generated during drilling, thereby ensuring machining accuracy. After machining is completed, the electromagnetic base 56 is de-energized and released, the follower slider 53 returns to its free state, the vertical telescopic cylinder 54 retracts, and the electromagnetic arc seat 55 descends and resets. The bridge housing can then be removed or rotated to other angles for subsequent machining.

[0034] By incorporating the follower support assembly 50, the bottom of the bridge housing in its central part is continuously supported by the electromagnetic arc seat 55 during the rotational machining process, effectively suppressing vibration and deformation caused by cutting stress during drilling. The cooperation between the arc-shaped guide rail 52 and the follower slider 53 allows the electromagnetic arc seat 55 to follow the rotation of the bridge housing, ensuring the continuity of the support action; the locking function of the electromagnetic seat 56 ensures the stability of the position of the follower slider 53 during machining, improving the accuracy and stability of drilling.

[0035] In this embodiment, it should be noted that the rotation direction of the drive motor 44 during the rotation of the axle housing can be flexibly configured according to the position and number of holes to be processed. For example, two axle housing leaf spring seats are symmetrically distributed at one end of the axle housing. When it is necessary to process the outer axle housing leaf spring seat, the drive motor 44 rotates 90° clockwise to make it face upward; when it is necessary to process the other axle housing leaf spring seat, the drive motor 44 first resets and then rotates 90° counterclockwise to make it face upward. When it is necessary to process the axle housing jaw housing, the drive motor 44 drives the axle housing to rotate, so that the surface of the axle housing jaw housing to be drilled faces upward. At this time, the arc-shaped bottom of the axle housing jaw housing faces downward and is supported by the follower back support assembly 50.

[0036] As a specific implementation, the drive unit 47 can be one of belt drive, chain drive, or gear drive in the prior art. Those skilled in the art can choose one of belt drive, chain drive, or gear drive based on factors such as transmission torque requirements, space layout, and cost, all of which can achieve the rotational power transmission between the drive motor 44 and the rotating roller 46. All of the above alternative solutions are within the scope of protection claimed in this application.

[0037] In this embodiment, both the horizontal telescopic cylinder 43 and the vertical telescopic cylinder 54 can be hydraulic cylinders or pneumatic cylinders. Those skilled in the art can flexibly choose according to the hydraulic or pneumatic source conditions at the work site. Both horizontal guide rails 41 are embedded in the upper surface of the base plate 10, and the horizontal slider 42 slides with the two horizontal guide rails 41 through the guide groove on its bottom surface. The two horizontal guide rails 41 are parallel to each other, jointly constraining the sliding direction of the horizontal slider 42, so that it always reciprocates along the axial direction (i.e., the X-axis direction) of the axle housing, ensuring the alignment accuracy between the mating seat 48 and the wheel end flange of the axle housing.

[0038] As a specific implementation, the base plate 10 is an integral metal plate with its upper surface precision-machined to ensure the flatness of the mounting surfaces of each component. The column 221 can be a rectangular columnar metal structure, with its bottom surface fixedly connected to the base plate 10 by fasteners. The support base 31 is fixedly connected to the side or top surface of the column 221 by fasteners.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary support device for drilling bridge housings, characterized in that, include: Base plate; Two sets of flat plate support components are symmetrically arranged on the base plate to support the bridge shell leaf spring seat and make the surface of the bridge shell leaf spring seat to be drilled vertical. Two sets of positioning support components are respectively mounted on the two sets of the aforementioned flat plate support components, and are used to support the outer cylindrical body of the bridge shell leaf spring seat; Two sets of drive components are symmetrically arranged on the base plate and are respectively connected to the two sets of plate support components. The drive components are used to fix the wheel end flange of the axle housing so that after the axle housing leaf spring seat is positioned by the plate support component and the positioning support component, it moves horizontally toward the middle of the axle housing and clamps the positioned axle housing. The drive components are also configured to drive the axle housing to rotate after clamping the axle housing so that the drilling surface of the axle housing leaf spring seat or the drilling surface of the axle housing jaw housing faces upward. The flat plate support assembly includes a support portion, a vertical moving portion, and a linkage portion. The support portion is used to contact the supporting axle housing leaf spring seat, and the vertical moving portion is used to move the support portion up and down in the vertical direction. The linkage portion is connected to the drive assembly and is configured such that: when the drive assembly moves horizontally towards the center of the axle housing, the linkage portion moves the support portion away from the axle housing leaf spring seat; when the drive assembly resets, the linkage portion resets the support portion upwards to avoid the axle housing during rotational machining.

2. The rotary support device for drilling bridge housings according to claim 1, characterized in that, The support includes a mounting base and a horizontal seat with an upper surface disposed on the mounting base for contacting the axle housing leaf spring seat; The vertical moving part includes a column disposed on the base plate, a vertical guide rail disposed on the column, and a vertical slider that slides with the vertical guide rail, and the mounting base is disposed on the vertical slider; The linkage includes a first inclined wedge disposed on the vertical slider and a horizontally sliding component disposed on the column. The push rod includes a fixed base connected to the inner end of the push rod, and a second wedge connected to the fixed base and engaging with the first wedge. The outer end of the push rod is connected to the drive assembly.

3. The rotary support device for drilling bridge housings according to claim 2, characterized in that, The push rod slides horizontally through a sliding sleeve located on the column.

4. The rotary support device for drilling bridge housings according to claim 1, characterized in that, The positioning support assembly includes a support seat disposed on the column. An arc-shaped groove is formed on the upper surface of the support seat, and a plurality of balls are provided on the inner wall of the arc-shaped groove to form a rolling cavity that matches the radius of the outer cylindrical body of the bridge housing leaf spring seat.

5. The rotary support device for drilling bridge housings according to claim 4, characterized in that, The support base is also provided with a mounting cavity, which is located below the rolling cavity and connected through a through hole. An electromagnetic plate is provided in the mounting cavity. The electromagnetic plate is configured to: be energized to attract the outer cylindrical body of the axle housing leaf spring seat when the drive assembly is not in contact with the axle housing wheel end flange, and be de-energized when the drive assembly is in contact with the axle housing wheel end flange.

6. The rotary support device for drilling bridge housings according to claim 1, characterized in that, The drive assembly includes two horizontal guide rails on the base plate, a horizontal slider that slides together with the two horizontal guide rails, and a horizontal telescopic cylinder on the base plate and connected to the horizontal slider; the outer end of the push rod is connected to the horizontal slider; the horizontal slider is provided with a drive motor and a connecting seat, a rotating roller is rotatably connected to the connecting seat, the outer end of the rotating roller is connected to the drive motor through a drive unit, and the inner end of the rotating roller is provided with a docking seat for docking with the wheel end flange of the axle housing, and the docking seat is provided with inserts for correspondingly inserting into the flange holes of the wheel end of the axle housing.

7. The rotary support device for drilling bridge housings according to any one of claims 1 to 6, characterized in that, The base plate is also provided with a follow-up back support assembly, which is used to support the bottom of the axle housing and dental casing, and continuously abuts against the bottom of the axle housing and dental casing during the rotation of the axle housing.

8. The rotary support device for drilling bridge housings according to claim 7, characterized in that, The follower back support assembly includes two mounting brackets symmetrically arranged on the base plate. Each of the two mounting brackets has an arc-shaped guide rail that matches the rotation path of the axle housing on its opposite side. A follower slider is fitted between the two arc-shaped guide rails. The follower slider is equipped with a vertical telescopic cylinder. The telescopic end of the vertical telescopic cylinder is equipped with an electromagnetic arc seat that matches the bottom surface of the axle housing jaw casing. The electromagnetic arc seat is configured to maintain adsorption on the bottom surface of the axle housing jaw casing during the rotation of the axle housing. An electromagnetic seat is provided at the bottom of the follower slider. The electromagnetic seat is used to adsorb onto the base plate when not in motion to lock the position of the follower slider.

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