A boring device for producing a light axle housing

Abstract

The application discloses a boring machining device for light axle housing production, which comprises a vertical main boring machine, two horizontal auxiliary boring machines, an axle housing positioning mechanism arranged on a workbench of the vertical main boring machine, a hydraulic chuck one installed on a main shaft of the vertical main boring machine, a boring cutter one fixed on a movable chuck jaw of the hydraulic chuck one, a pair of boring cutters two fixed on a disc body of the hydraulic chuck one, a hydraulic chuck two installed on a main shaft of the horizontal auxiliary boring machine, and a boring cutter three fixed on a movable chuck jaw of the hydraulic chuck two; the main shaft box of the vertical main boring machine moves vertically and linearly, and drives the hydraulic chuck one to move close to or away from the top of the workbench; the boring cutter one and the two boring cutters two are arranged from top to bottom in sequence, and the boring cutter one bores the edge surface of the central hole of the axle housing, and the two boring cutters two simultaneously bore two inner holes of the axle housing; the main shaft box of the horizontal auxiliary boring machine moves horizontally and linearly, and drives the hydraulic chuck two to move close to or away from one side of the workbench; and the boring cutter three bores the end part of the axle housing. The boring machining device has the effect of efficiently boring the axle housing.

Description

Technical Field

[0001] This invention relates to the field of axle housing production equipment technology, and in particular to a boring machine for producing light vehicle axle housings. Background Technology

[0002] The axle is the mounting base for the main reducer, differential, half-shafts, and wheels. Its main function is to support and protect these components. Currently, the axle consists of an axle housing, reinforcing rings, a rear cover, and half-shaft sleeves. The axle housing is integrally formed through heating, stamping, and welding. Components such as the reinforcing ring, rear cover, and half-shaft sleeves are typically welded directly to the axle housing. Because the surface of the axle housing is rough and uneven after integral forming, the inner walls of the two center holes, the edge of one center hole, and both ends of the axle housing are usually boring before welding these components to obtain a smooth and flat welding surface. The two ends of the axle housing, the inner walls of the center holes, and the edge of the center holes typically require multiple boring machines for separate boring operations. This not only results in a long boring time for the axle housing but also necessitates frequent manual rotation and positioning of the axle housing, leading to low boring efficiency and high labor intensity. Summary of the Invention

[0003] The purpose of this invention is to provide a boring machine for the production of lightweight vehicle axle housings, which has the effect of efficiently boring axle housings.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a boring machine for producing light-duty vehicle axle housings, comprising a vertical main boring machine and two horizontal auxiliary boring machines, an axle housing positioning mechanism mounted on the worktable of the vertical main boring machine, a hydraulic chuck one mounted on the spindle of the vertical main boring machine, a boring tool one fixed on the movable jaw of the hydraulic chuck one, a pair of boring tools two fixed on the disc body of the hydraulic chuck one, a hydraulic chuck two mounted on the spindles of the two horizontal auxiliary boring machines, and a boring tool three fixed on the movable jaw of the hydraulic chuck two. The vertical main boring machine... The spindle box moves vertically and linearly, causing the hydraulic chuck one, boring tool one, and boring tool two to move closer to or away from the top of the worktable. The boring tool one is located above the two boring tools two and rotates to bore the edge surface of the center hole of the bridge housing. The two boring tools two are parallel vertically and rotate simultaneously to bore the two inner holes of the bridge housing. The two horizontal auxiliary boring machines do not have independent worktables and are symmetrically located on both sides of the worktable of the vertical main boring machine. The spindle box of the horizontal auxiliary boring machine moves horizontally and linearly, causing the hydraulic chuck two and boring tool three to move closer to or away from one side of the worktable of the vertical main boring machine. The boring tool three rotates to bore the end of the bridge housing.

[0005] A further configuration of the present invention is as follows: the bridge housing positioning mechanism includes a circular base fixed to the middle of the worktable of a vertical main boring machine, four support cylinders vertically fixed to the top of the circular base, four positioning and clamping cylinders horizontally fixed to the circular base, a pair of I-shaped bases fixed to the worktable of the vertical main boring machine and located on both sides of the circular base, a pair of slides one and two sliding on the I-shaped base, a sliding component that drives slides one and two to slide closer to or further away from each other on the I-shaped base, and a pair of U-shaped clamping plates respectively fixed on slides one and two and symmetrical to each other; the piston rod heads of the four support cylinders jointly support and contact the bottom wall of the middle part of the bridge housing; the piston rod heads of the four positioning and clamping cylinders jointly contact and clamp the outer wall of the middle part of the bridge housing; the I-shaped bases are respectively located below the two ends of the bridge housing, and slides one and two on the I-shaped bases are located on both sides of the ends of the bridge housing, and the concave sides of the U-shaped clamping plates on slides one and two can jointly contact and clamp the side walls of the ends of the bridge housing.

[0006] A further feature of the present invention is that: eight T-shaped grooves are evenly provided on the circular base; a mounting base plate is fixedly provided at the bottom of the supporting cylinder, and a T-shaped slider is fixedly provided at the bottom of the mounting base plate, which slides in the T-shaped grooves; two vertical threaded holes are provided at the top of the mounting base plate, and a locking screw is threadedly connected to the threaded holes.

[0007] An L-shaped mounting plate is fixedly installed on the cylinder body of the positioning and clamping cylinder, and a T-shaped slider is fixedly installed at the bottom of the L-shaped mounting plate, which slides in a T-shaped groove. Two vertical threaded holes are opened on the horizontal part of the L-shaped mounting plate, and locking screws are threaded into the threaded holes. The four T-shaped sliders at the bottom of the mounting plates and all the T-shaped sliders at the bottom of the L-shaped mounting plates slide in eight T-shaped grooves respectively.

[0008] An L-shaped mounting plate 2 is fixedly installed on the slide table 1 or slide table 2. A groove is provided on one side of the L-shaped mounting plate 2 for inserting a U-shaped clamping plate. A pair of threaded holes 3 connecting the groove are provided on the top of the L-shaped mounting plate 2, and a locking screw 3 is threadedly connected to the threaded holes 3. The U-shaped clamping plate is provided with a locking hole for the locking screw 3 to pass through.

[0009] A further feature of the present invention includes an automatic feeding mechanism, which comprises a roller conveyor for conveying the bridge housing, a support column vertically positioned on one side of the roller conveyor, an I-beam fixedly connected at one end to the support column and horizontally positioned above the roller conveyor, a movable vehicle suspended and movable on the I-beam, a moving assembly for driving the movable vehicle to move along the I-beam, a pair of lifting hydraulic cylinders whose piston rods are fixedly connected at their ends to the movable vehicle, a lifting frame fixedly connected to the cylinder bodies of the two lifting hydraulic cylinders, and a pair of rotating rods that are cross-shaped and hinged together at their centers to the lifting frame. The system includes a rotating assembly that drives two rotating rods to rotate synchronously and in opposite directions relative to the lifting frame; a pair of vertically parallel positioning rods fixedly connected to both ends of the rotating rods; a positioning cylinder rotatably sleeved on the positioning rods; a rotating plate centrally connected to the lifting frame; three fixed seats fixed to the bottom of the rotating plate and evenly surrounding the center of the rotating plate; two pairs of parallel cranks, one and two cranks respectively hinged to the two sides of the fixed seats; a connecting rod 1 that hinges to the other ends of the two cranks 1 and two cranks 2; a tensioning plate fixedly connected to one end of the connecting rod 1 and in an arc shape; and a flipping assembly that drives the two cranks 2 to flip relative to the fixed seats.

[0010] The vertical main boring machine and supporting columns are located on both sides of the roller conveyor. The I-beam is horizontally located above the roller conveyor and the worktable of the vertical main boring machine. The positioning rods on the two rotating rods are symmetrical to each other, and the positioning cylinders on the two positioning rods can clamp and position the end of the bridge housing. The first crank and the second crank are parallel to each other and have the same length. The first connecting rod is horizontally located on either the first or the second crank, and the first or the second crank is hinged to both sides of the first connecting rod. The three tensioning plates can contact and tension the inner walls of the two holes of the bridge housing.

[0011] A further feature of the present invention is that a horizontal lifting plate is fixedly mounted on the positioning rod, and the lifting plate contacts and lifts the bottom of the bridge housing; a layer of anti-slip rubber pad is fixedly covered on the side of the tensioning plate that contacts the inner hole of the bridge housing.

[0012] A further configuration of the present invention includes: the sliding assembly comprising a pair of horizontally movable rods one and two parallel to the sides of the circular base and located between the two I-shaped bases; a pair of connecting rods one connecting the two slides one and the movable rods one; a pair of connecting rods two connecting the two slides two and the movable rods two; two pairs of movable plates respectively fixed on the movable rods one and two; a pair of vertically inserted rods passing through the movable plates; a lifting plate fixed to the upper end of the two inserted rods and having a concave cross-section; a friction plate fixed to the lower end of the two inserted rods and having an isosceles trapezoidal cross-section; a pair of friction strips symmetrically located on both sides of the friction plate and having a right-angled trapezoidal cross-section; and a spring sleeved on the inserted rods and having its two ends fixedly connected to the bottom of the lifting plate and the top of the movable plate, respectively.

[0013] An L-shaped mounting plate three is fixedly connected to one side of the slide table one and one end of the connecting rod one; an L-shaped mounting plate four is fixedly connected to one side of the slide table two and one end of the connecting rod two; the connecting rod one and the connecting rod two are parallel to each other and slide through the L-shaped mounting plate four and the L-shaped mounting plate three respectively; the two moving plates on the moving rod one are symmetrical to the two moving plates on the moving rod two and are located below the four positioning rods respectively;

[0014] When the lifting frame descends relative to the worktable of the vertical main boring machine, the four positioning rods can be inserted into the lifting plate grooves above the two pairs of moving plates respectively, and press down the lifting plate compression spring; when the rotating rod flips and moves, the positioning rod inserted into the lifting plate groove can slide linearly along the lifting plate groove.

[0015] The friction strip is fixed on the worktable of the vertical main boring machine. Anti-slip textures are evenly provided on the inclined surfaces of the friction strip and the friction plate. Before the lifting plate is pressed down by the positioning rod, the two inclined surfaces of the friction plate are tightly attached to the inclined surfaces of the two friction strips under the elastic force of the spring.

[0016] A further configuration of the present invention is as follows: the mobile vehicle body includes a U-shaped body, two sets of rollers respectively rotatably disposed on the two inner side walls of the U-shaped body, and multiple horizontally parallel cylindrical bodies rotatably connected at both ends to the two inner side walls of the U-shaped body. The rollers and cylindrical bodies are parallel vertically, with the rollers rolling at the top of the horizontal portion below the I-beam and the cylindrical bodies rolling at the bottom of the horizontal portion below the I-beam. The mobile assembly includes a pair of driving sprockets and driven sprockets rotatably disposed on the I-beam, a servo motor fixed on the working suspension beam and connected at its output end to the driving sprocket, a chain mounted on the driving sprockets and driven sprockets, and multiple L-shaped connectors connecting the U-shaped body and the chain.

[0017] A further configuration of the present invention includes: a sliding plate horizontally slidably disposed on the lifting frame; a pair of elongated holes formed in the sliding plate and arranged in a figure-eight shape; a pair of sliding rods respectively fixed to the bottom of two rotating rods and passing through the two elongated holes; a gear rotatably disposed on the lifting frame; a plurality of teeth evenly disposed on one side of the sliding plate and meshing with the gear; and a worm gear reducer motor fixed on the lifting frame and connected to the gear at its output end.

[0018] A further configuration of the present invention is as follows: the tilting assembly includes a second lifting hydraulic cylinder whose cylinder body is fixed on the lifting frame, a lifting plate rotatably connected to the piston rod end of the second lifting hydraulic cylinder, three support arms fixedly connected to the side wall of the lifting plate, a second elongated hole opened on the support arm, a second sliding rod sliding in the second elongated hole, and a pair of connecting rods fixedly connected to the two ends of the second sliding rod. The center of the lifting plate coincides with the rotation center of the rotating plate, and the lifting plate is located below the rotating plate. The three support arms are horizontally located in the gaps of the three pairs of cranks. The connecting rods at both ends of the second sliding rod are respectively fixedly connected to the cranks on both sides of the support arm, and the connecting rods and the cranks are perpendicular to each other.

[0019] A further configuration of the present invention is as follows: the lifting frame includes a support plate 1 that fixes and supports the lifting hydraulic cylinder 1, a support plate 2 that rotates and supports the two rotating rods, a support plate 3 that rotates and supports the rotating plate 3, a pair of connecting blocks that connect the bottom of the support plate 1 and the top of the support plate 2, and four connecting rods 3 that connect the bottom of the support plate 2 and the top of the support plate 3. The rotating component is disposed on the support plate 2, and the flipping component is disposed on the support plate 3.

[0020] The beneficial effects of this invention are:

[0021] By adopting the aforementioned boring machine consisting of a vertical main boring machine, two horizontal auxiliary boring machines, and an axle housing positioning mechanism, the boring of both ends, the inner wall of the central hole, and the hollow edge surface of the axle housing can be completed in one operation. This overcomes the technical defects of traditional axle housing boring, which requires frequent manual fixing and positioning. Furthermore, in conjunction with an automatic feeding mechanism, the axle housing can be quickly placed or removed from the axle housing positioning mechanism. This effectively improves the efficiency of axle housing boring and achieves full automation of axle housing boring, saving a significant amount of manpower.

[0022] By employing the bridge housing positioning mechanism composed of the aforementioned components such as a circular base, a support cylinder, a positioning and clamping cylinder, and a U-shaped clamping plate, not only can the bridge housing be stably fixed and positioned, but the support cylinder and the positioning and clamping cylinder can also be manually adjusted to adjust their relative positions on the circular base, thereby fully adapting to the fixing and positioning of bridge housings of different sizes.

[0023] By employing the aforementioned automatic feeding device composed of components such as a rolling conveyor, an I-beam suspension beam, a moving vehicle, a lifting frame, rotating rods, and tensioning plates, not only is the automatic lifting and transport of the axle shell to the axle shell positioning mechanism achieved, but the cross-shaped rotating rods, in conjunction with the positioning rods, positioning cylinders, and lifting plates, can also clamp and support both ends of the axle shell during the lifting process. This ensures the safe transport of the axle shell while also ensuring that the axle shell accurately and smoothly enters the axle shell positioning mechanism during the lowering process.

[0024] By employing a sliding assembly composed of components such as a moving rod, a moving rod, a moving plate, a lifting plate, a friction plate, and friction strips, not only can the movement of the positioning rod in the automatic feeding mechanism be fully utilized and converted into the relative sliding required by slides one and two, thereby saving the energy-driven power equipment of this device and reducing the manufacturing and maintenance costs of this device, but also the friction plate and friction strips can automatically lock the sliding of slides one and two before and after the above-mentioned movement conversion, thereby ensuring that the U-shaped clamping plates on slides one and two stably and permanently clamp the end of the positioning bridge housing. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of this embodiment;

[0027] Figure 2 This is a schematic diagram of the bridge housing positioning device in this embodiment;

[0028] Figure 3 This is a schematic diagram of the sliding component structure in this embodiment;

[0029] Figure 4 This is a schematic diagram showing the positional relationship between the lifting plate, the moving plate, the inserting rod, the friction plate, and the friction strip in this embodiment;

[0030] Figure 5 This is a schematic diagram of the automatic feeding mechanism in this embodiment;

[0031] Figure 6 This is a schematic diagram of the mobile vehicle body structure in this embodiment;

[0032] Figure 7 This is a schematic diagram showing the connection relationship of components such as the lifting frame, rotating rod, and rotating plate in this embodiment;

[0033] Figure 8 This is a schematic diagram of the rotating component structure in this embodiment;

[0034] In the diagram: 1. Vertical main boring machine; 11. Hydraulic chuck one; 12. Boring tool one; 13. Boring tool two; 2. Horizontal auxiliary boring machine; 21. Hydraulic chuck two; 22. Boring tool three; 3. Bridge housing positioning mechanism; 31. Circular base; 311. T-shaped slide; 32. Support cylinder; 321. Mounting base plate; 322. T-shaped slider one; 322a. Threaded hole one; 323. Locking screw one; 33. Positioning and clamping cylinder; 331. L-shaped mounting plate one; 332. T-shaped slider two; 332a. Threaded hole two; 333. Locking screw two; 34. I-shaped base; 35. Slide 1; 351, L-shaped mounting plate 3; 36, Slide 2; 361, L-shaped mounting plate 2; 361a, Groove; 361b, Threaded hole 3; 361c, Locking screw 3; 362, L-shaped mounting plate 4; 37, Sliding assembly; 371, Moving rod 1; 372, Moving rod 2; 373, Connecting rod 1; 374, Connecting rod 2; 375, Moving plate; 376, Inserting rod; 377, Lifting plate; 378, Friction plate; 379, Friction strip; 370, Spring; 38, U-shaped clamping plate; 381, Locking hole; 4, Automatic feeding mechanism; 41, Roller 42. Conveyor; 43. Support column; 44. I-beam; 45. Moving vehicle body; 441. U-shaped body; 442. Roller; 443. Cylinder; 443a. Limiting ring; 45. Moving component; 451. Drive sprocket; 452. Driven sprocket; 453. Servo motor; 454. Chain; 455. L-shaped connector; 46. Lifting hydraulic cylinder one; 47. Lifting frame; 471. Support plate one; 472. Support plate two; 472a. Square pipe opening; 472b. Arc-shaped hole; 473. Support plate three; 474. Connecting block; 475. Connecting rod three; 48. 49. Rotating rod; 491. Rotating assembly; 492. Sliding plate; 493. Long slot one; 494. Slide rod one; 495. Gear; 496. Worm gear reducer motor; 4a. Positioning rod; 4a1. Lifting plate; 4b. Positioning cylinder; 4c. Rotating plate; 4d. Fixed seat; 4e. Crank one; 4f. Crank two; 4g. Connecting rod one; 4h. Tensioning plate; 4h1. Anti-slip rubber pad; 4i. Tilting assembly; 4i1. Lifting hydraulic cylinder two; 4i2. Lifting plate; 4i3. Support arm; 4i4. Long slot two; 4i5. Slide rod two; 4i6. Connecting rod two. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] Example: A boring machine for producing lightweight axle housings, such as... Figures 1-4 As shown, the machine includes one vertical main boring machine 1 and two horizontal auxiliary boring machines 2, a bridge housing positioning mechanism 3 mounted on the worktable of the vertical main boring machine 1, a hydraulic chuck 11 mounted on the spindle of the vertical main boring machine 1, a boring tool 12 fixed on the movable jaw of the hydraulic chuck 11, a pair of boring tools 13 fixed on the disc body of the hydraulic chuck 11, a hydraulic chuck 21 mounted on the spindle of the two horizontal auxiliary boring machines 2, and a boring tool 22 fixed on the movable jaw of the hydraulic chuck 21. The spindle box of the vertical main boring machine 1 moves vertically and linearly, driving the hydraulic chucks. 11. Boring cutter 12 and boring cutter 23 are close to or away from the top of the worktable. Boring cutter 12 is located above the two boring cutters 23 and rotates to bore the edge surface of the center hole of the bridge housing. The two boring cutters 23 are parallel vertically and rotate simultaneously to bore the two inner holes of the bridge housing. The two horizontal auxiliary boring machines 2 have no independent worktable and are symmetrically located on both sides of the worktable of the vertical main boring machine 1. The spindle box of the horizontal auxiliary boring machine 2 moves horizontally and linearly, and drives the hydraulic chuck 21 and boring cutter 32 to approach or move away from one side of the worktable of the vertical main boring machine 1. The boring cutter 32 rotates to bore the end of the bridge housing.

[0037] The bridge housing positioning mechanism 3 includes a circular base 31 fixed to the center of the worktable of the vertical main boring machine 1, four support cylinders 32 vertically fixed to the top of the circular base 31, four positioning and clamping cylinders 33 horizontally fixed to the circular base 31, a pair of I-shaped bases 34 fixed to the worktable of the vertical main boring machine 1 and located on both sides of the circular base 31, a pair of slides 35 and 36 sliding on the I-shaped bases 34, a sliding assembly 37 that drives the slides 35 and 36 to slide closer to or further away from each other on the I-shaped bases 34, and a pair of U-shaped clamping plates 38 respectively fixed to the slides 35 and 36 and symmetrical to each other; and four support cylinders 32. The piston rods of four supporting cylinders 32 are evenly arranged around the axis of the circular base 31, and together they support and contact the bottom wall of the middle part of the axle housing; four positioning and clamping cylinders 33 are evenly arranged around the axis of the circular base 31, and together they contact and clamp the outer wall of the middle part of the axle housing; the I-shaped base 34 is located below the two ends of the axle housing, and the first slide 35 and the second slide 36 on the I-shaped base 34 are located on both sides of the end of the axle housing. The concave side of the U-shaped clamping plate 38 on the first slide 35 and the second slide 36 faces the axle housing, and as the first slide 35 and the second slide 36 move closer to each other, the concave side of the two U-shaped clamping plates 38 can contact and clamp the side wall of the end of the axle housing.

[0038] By adopting the above technical solution, when boring the bridge housing, the support cylinder 32 and the positioning clamping cylinder 33 first support and fix the middle part of the positioning bridge housing by means of telescopic piston rods. At the same time, the sliding assembly 37 uses the mutual sliding of the drive slide 35 and the slide 36 to make the two pairs of U-shaped clamping plates 38 clamp the two ends of the positioning bridge housing, thereby stably fixing the bridge housing on the worktable of the vertical main boring machine 1. Then, the worktable of the vertical main boring machine 1 moves actively, driving the bridge housing. The chuck is moved directly below hydraulic chuck 11 and between hydraulic chucks 21 on the two horizontal auxiliary boring machines 2, so that boring tools 12 and 23 on hydraulic chuck 11 and boring tool 22 on hydraulic chuck 3 are moved relative to each other to the boring position of the axle housing. Then, the vertical main boring machine 1 actively lowers hydraulic chuck 11, bringing the two boring tools 23 into the inner hole of the axle housing, and making the tips of the two boring tools 23 contact the inner walls of the two central holes of the axle housing respectively. At this time, the vertical main boring machine 1 controls the hydraulic chuck 11 to rotate. With the lifting and lowering mechanism, the inner walls of the upper and lower center holes of the axle housing can be bored. Simultaneously, the two horizontal auxiliary boring machines 2, by controlling the movement of their spindle boxes, drive the two hydraulic chucks 21 closer to the two ends of the axle housing until the boring tools 32 on the hydraulic chucks 21 contact the end walls of the axle housing. At this point, the horizontal auxiliary boring machines 2 control the rotation and movement of the hydraulic chucks 21, and the hydraulic chucks 21 control the jaws connecting the boring tools 32 to move away from or closer to the center of the axle housing end, thus boring the end walls of the axle housing. Finally, waiting... After the boring tool 13 completes boring of the inner walls of the two center holes of the axle housing, the vertical main boring machine 1 will continue to lower the hydraulic chuck 11, so that the two boring tools 13 are respectively staggered in height with the inner walls of the upper and lower center holes of the axle housing, and the boring tool 12 contacts the edge surface of the upper center hole of the axle housing. At this time, the vertical main boring machine 1 controls the rotation and lifting of the hydraulic chuck 11, and the hydraulic chuck 11 controls the jaws connected to the boring tool 12 to move away from or closer to the center of the center hole, so that the edge surface of the upper center hole of the axle housing can be bored.

[0039] like Figure 2As shown, eight T-shaped grooves 311 are evenly distributed on the circular base 31, and one end of each T-shaped groove 311 coincides with the axis of the circular base 31. A mounting base plate 321 is fixedly installed at the bottom of the supporting cylinder 32, and a T-shaped slider 322 that slides in the T-shaped grooves 311 is fixedly installed at the bottom of the mounting base plate 321. Two vertical threaded holes 322a are opened at the top of the mounting base plate 321, penetrating the T-shaped slider 322, and the threaded holes 322a are threadedly connected to locking screws 323 that lock the sliding of the T-shaped slider 322. An L-shaped mounting plate 331 is fixedly installed on the cylinder body of the positioning and clamping cylinder 33. The bottom of the L-shaped mounting plate 331 is fixedly provided with a T-shaped slider 332 that slides in a T-shaped groove 311. The horizontal part of the L-shaped mounting plate 331 has two vertical threaded holes 332a that pass through the T-shaped slider 332. The threaded holes 332a are threadedly connected to locking screws 333 that lock the sliding of the T-shaped slider 332. The four T-shaped sliders 322 at the bottom of the four mounting plates slide in four non-adjacent T-shaped grooves 311 of the eight T-shaped grooves 311, and the four T-shaped sliders 332 at the bottom of the four L-shaped mounting plates 331 slide in the remaining four T-shaped grooves 311. By adopting the above-mentioned connection structure between the support cylinder 32, the positioning clamping cylinder 33 and the circular base 31, not only can the support cylinder 32 and the positioning clamping cylinder 33 be stably fixed on the circular base 31, but also the positions of the support cylinder 32 and the positioning clamping cylinder 33 can be freely adjusted according to the size of the axle housing, thereby adapting to the fixed positioning work of axle housings of different sizes.

[0040] like Figure 2 As shown, an L-shaped mounting plate 361 is fixedly installed on slide 35 or slide 36. One side of the L-shaped mounting plate 361 has a groove 361a for inserting a U-shaped clamping plate 38. The top of the L-shaped mounting plate 361 has a pair of threaded holes 361b communicating with the groove 361a, and a locking screw 361c is threaded into each threaded hole 361b. The U-shaped clamping plate 38 has a locking hole 381 for the locking screw 361c to pass through. By adopting the above-mentioned connection structure of the U-shaped clamping plate 38 and slide 35 or slide 36, not only can the U-shaped clamping plate 38 be stably mounted on slide 35 or slide 36, but also new U-shaped clamping plates 38 can be freely replaced according to their wear condition and the size of the bridge housing, thereby ensuring that the U-shaped clamping plate 38 stably and accurately clamps the end of the bridge housing.

[0041] like Figures 5-8As shown, it also includes an automatic feeding mechanism 4, which includes a roller conveyor 41 for conveying the bridge housing, a support column 42 vertically erected on one side of the roller conveyor 41, an I-beam 43 with one end fixedly connected to the support column 42 and horizontally located above the roller conveyor 41, a moving vehicle 44 suspended and moving on the I-beam 43, a moving assembly 45 driving the moving vehicle 44 to move along the I-beam 43, a pair of lifting hydraulic cylinders 46 with their piston rod ends fixedly connected to the moving vehicle 44, a lifting frame 47 fixedly connected to the cylinder bodies of the two lifting hydraulic cylinders 46, a pair of cross-shaped rotating rods 48 that are hinged together at the center to the lifting frame 47, and a mechanism for driving the two rotating rods 48 to move relative to each other. The lifting frame 47 rotates synchronously and in opposite directions, a pair of vertically parallel positioning rods 4a fixedly connected to both ends of the rotating rod 48, a positioning cylinder 4b rotatably sleeved on the positioning rods 4a, a rotating plate 4c centrally connected to the lifting frame 47, three fixed seats 4d fixed to the bottom of the rotating plate 4c and evenly surrounding the center of the rotating plate 4c, two pairs of parallel cranks 4e and cranks 4f respectively hinged at one end to the two sides of the fixed seats 4d, a connecting rod 4g that simultaneously hinges to the other ends of the two cranks 4e and the two cranks 4f, a tensioning plate 4h fixedly connected to one end of the connecting rod 4g and in an arc shape, and a flipping assembly 4i that drives the two cranks 4f to flip relative to the fixed seats 4d.

[0042] The vertical main boring machine 1 and the support column 42 are located on both sides of the roller conveyor 41. The I-shaped cantilever beam 43 is horizontally located above the worktable of the roller conveyor 41 and the vertical main boring machine 1. The positioning rods 4a on the two rotating rods 48 are symmetrical to each other, and the positioning cylinder 4b on the positioning rod 4a can clamp and position the end of the bridge housing under the rotation of the rotating rods 48. The crank 1 4e and the crank 2 4f are parallel to each other and have the same length. The connecting rod 1 4g is horizontally located on the two cranks 1 4e or the two cranks 2 4f, and the two cranks 1 4e or the two cranks 2 4f are respectively hinged to the two sides of the connecting rod 1 4g. The three tensioning plates 4h are vertically located on the side of the three fixed seats 4d away from the center of the rotating plate 4c, and can contact and tension the two inner hole walls of the bridge housing together.

[0043] By employing the aforementioned automatic feeding mechanism 4, when the bridge housing to be boring is placed into the bridge housing positioning mechanism 3, the roller conveyor 41 first transports the bridge housing below the I-beam 43; then, the lifting hydraulic cylinder 46 lowers the lifting frame 47 by extending its piston rod, causing the rotating plate 4c to approach the bridge housing and the three tensioning plates 4h to extend into the central hole of the bridge housing; then, the flipping assembly 4i drives the cranks 4f on both sides of the fixed seat 4d to flip. Since the ends of the cranks 4e and 4f are respectively hinged to the fixed seat 4d and the connecting rod, and the cranks 4e and 4f are parallel to each other and of equal length, when the cranks 4f flip, the cranks 4f will flip synchronously and in the same direction, and drive the connecting rod to move upward and horizontally away from the center of the rotating plate 4c; then, the three tensioning plates 4h will follow the connecting rod connected to them and move closer and closer to the inner wall of the hollow hole of the bridge housing until they contact the center hole of the tensioning plate. The inner wall; at the same time, the rotating component 49 drives the two cross-shaped rotating rods 48 to rotate synchronously in opposite directions, so that the vertical positioning rods 4a at both ends of the two rotating rods 48 approach the two sides of the bridge shell respectively, until the two pairs of positioning cylinders 4b on the two pairs of positioning rods 4a clamp and position the two ends of the bridge shell, so that the two ends of the bridge shell can be accurately placed between the two U-shaped clamping plates 38 later; then the lifting hydraulic cylinder 46 raises the lifting frame 47 by retracting the piston rod, and with the tensioning effect of the tensioning plate 4h, lifts the bridge shell from the roller conveyor 41 to a certain height, and the moving component 45 will then transport the bridge shell into the worktable of the vertical main boring machine 1 by driving the moving car body 44 to move along the I-shaped suspension beam 43; finally, after the bridge shell arrives at the entrance of the bridge shell positioning mechanism 3, the lifting hydraulic cylinder 46 will control the lowering of the lifting frame 47 again, so that the bridge shell falls accurately into the bridge shell positioning mechanism 3, thereby realizing the automatic feeding effect of the bridge shell.

[0044] Since the rotating plate 4c is rotatably connected to the lifting frame 47, even if the inner wall of the center hole is tightened by the three tensioning plates 4h, it will not prevent the two positioning cylinders 4b from clamping the two ends of the positioning bridge shell. When the bridge shell is boring, the automatic feeding mechanism 4 will repeat the above operation to automatically remove the bridge shell from the bridge shell positioning mechanism 3 and place it on the cylinder roller conveyor 41 to transport it to the next welding station.

[0045] like Figure 7 As shown, a horizontal lifting plate 4a1 is fixedly installed on the positioning rod 4a, and the lifting plate 4a1 contacts and lifts the bottom of the bridge housing; a layer of anti-slip rubber pad 4h1 is fixedly covered on the side of the tensioning plate 4h that contacts the inner hole of the bridge housing. By using the above-mentioned lifting plate 4a1 and anti-slip rubber pad 4h1, the bridge housing can be prevented from falling during lifting and transportation, so as to ensure that the automatic feeding mechanism 4 can stably lift and transport the bridge housing.

[0046] like Figure 3 , Figure 4As shown, the sliding assembly 37 includes a pair of horizontally movable rods 371 and 372 parallel to the two sides of the circular base 31 and located between the two I-shaped bases 34; a pair of connecting rods 373 connecting the two slides 35 and the movable rods 371; a pair of connecting rods 374 connecting the two slides 36 and the movable rods 372; two pairs of movable plates 375 respectively fixed on the movable rods 371 and 372; a pair of vertically inserted rods 376 passing through the movable plates 375; a lifting plate 377 fixed to the upper end of the two inserted rods 376 with a U-shaped cross section; a friction plate 378 fixed to the lower end of the two inserted rods 376 with an isosceles trapezoidal cross section; a pair of friction strips 379 symmetrically located on both sides of the friction plate 378 with a right-angled trapezoidal cross section; and a spring 370 sleeved on the inserted rods 376 and fixedly connected at both ends to the bottom of the lifting plate 377 and the top of the movable plate 375 respectively.

[0047] An L-shaped mounting plate 351 is fixedly installed on one side of slide table 35, and one end of connecting rod 373 is fixedly connected to the L-shaped mounting plate 351. An L-shaped mounting plate 362 is fixedly installed on one side of slide table 36, and one end of connecting rod 374 is fixedly connected to the L-shaped mounting plate 351. Connecting rod 373 and connecting rod 374 are parallel to each other and slide through the L-shaped mounting plate 362 and L-shaped mounting plate 351 respectively. The two moving plates 375 on moving rod 371 are symmetrical to the two moving plates 375 on moving rod 372 and are located below the four positioning rods 4a respectively. The lifting frame 47 descends relative to the vertical. When the main boring machine 1 is in operation, the four positioning rods 4a can be inserted into the grooves 361a of the lifting plate 377 above the two pairs of moving plates 375, and the lifting plate 377 is pressed down to compress the spring 370; when the rotating rod 48 is rotated, the positioning rods 4a inserted into the grooves 361a of the lifting plate 377 can slide in a straight line along the grooves 361a of the lifting plate 377; the friction strips 379 are fixed on the worktable of the main boring machine 1, and the friction strips 379 and the inclined surfaces of the friction plates 378 are evenly provided with anti-slip textures, and before the lifting plate 377 is pressed down by the positioning rods 4a, the two inclined surfaces of the friction plates 378 are tightly attached to the inclined surfaces of the two friction strips 379 under the elastic force of the spring 370.

[0048] By adopting the above technical solution, when the automatic feeding mechanism 4 lowers the bridge housing into the bridge housing positioning mechanism 3, the four positioning rods 4a in the automatic feeding mechanism 4 will first insert into the grooves 361a of the lifting plate 377 above the two pairs of moving plates 375, and press down the spring 370 at the bottom of the lifting plate 377; at the same time, the insertion rod 376 connected to the lifting plate 377 will slide downward through the moving plate 375 as the lifting plate 377 moves downward, and drive the lower friction plate 378 to move downward, so that the two inclined surfaces of the friction plate 378 and the two inclined surfaces of the friction strips 379 separate from each other; after the bridge housing is completely placed in the support cylinder 32 The rotating assembly 49 will drive the two rotating rods 48 to rotate, causing the positioning rods 4a at both ends of the rotating rods 48 to move away from the sides of the bridge housing. Since the positioning rods 4a are inserted into the grooves 361a of the lifting plate 377 and can slide along the grooves 361a, the lifting plate 377 will move relative to the worktable of the vertical main boring machine 1 under the movement of the positioning rods 4a. Also, since the two pairs of positioning rods 4a move in opposite directions, and the two pairs of moving plates 375 are respectively fixedly connected to the first moving rod 371 and the second moving rod 372, the first moving rod 371 is connected to the first slide table 35 through the first connecting rod 373, and the second moving plate 375 is fixedly connected to the first moving rod 371 and the second moving rod 372. The second moving rod 372 is connected to the second slide table 36 via the second connecting rod 374. Therefore, the two pairs of moving plates 375 will synchronously drive the first moving rod 371 and the second moving rod 372 to move on the worktable in opposite directions. Meanwhile, the first connecting rod 373 and the second connecting rod 374 will drive the first slide table 35 and the second slide table 36 to slide in a direction that brings them closer to each other on the I-shaped base 34. Finally, after the U-shaped clamping plates 38 on the first slide table 35 and the second slide table 36 clamp and position the end of the bridge housing, and the positioning and clamping cylinder 33 clamps and positions the middle of the bridge housing, the flipping component 4i in the automatic feeding mechanism 4 will drive the second crank 4f to flip in the opposite direction, thereby releasing the tension plate 4. The tensioning of the inner wall of the central hole of the bridge housing is simultaneously controlled by the lifting hydraulic cylinder 46 in the automatic feeding mechanism 4, which controls the lifting frame 47 to rise. This causes the positioning rod 4a to rise away from the groove 361a of the lifting plate 377. The spring 370, which was previously compressed by the lifting plate 377, will push the lifting plate 377 upward and pull the friction plate 378 upward through the insert rod 376 during the rising of the positioning rod 4a. This will cause the two inclined surfaces of the friction plate 378 to make close contact with the inclined surfaces of the two friction strips 379 again. In this way, the movement of the lifting plate 377 and the moving plate 375 is locked, and the clamping and positioning effect of the two U-shaped clamping plates 38 is stably maintained.

[0049] like Figure 6As shown, the mobile vehicle body 44 includes a U-shaped body 441, two sets of rollers 442 respectively rotatably disposed on the two inner side walls of the U-shaped body 441, and multiple horizontally parallel cylindrical bodies 443 rotatably connected at both ends to the two inner side walls of the U-shaped body 441. The rollers 442 and cylindrical bodies 443 are parallel vertically, and the rollers 442 roll on the top of the lower horizontal part of the I-shaped suspension beam 43, while the cylindrical bodies 443 roll on the bottom of the lower horizontal part of the I-shaped suspension beam 43. Two limiting rings 443a are fixedly disposed on the outer surface of the cylindrical bodies 443, and the two limiting rings 443a respectively contact and rub against the two sides of the lower horizontal part of the I-shaped suspension beam 43. By adopting the aforementioned mobile vehicle body 44, the effect of the mobile vehicle body 44 being suspended and moved on the I-shaped suspension beam 43 can be achieved. Moreover, the rolling structure of the cylinder 443 and the roller 442 can make the movement of the mobile vehicle body 44 smooth and quiet. At the same time, two limiting rings 443a are fixedly provided on the outer surface of the cylinder 443, which can respectively contact the two side walls of the lower horizontal part of the I-shaped suspension beam 43, so as to ensure that the mobile vehicle body 44 can move stably in a straight line along the extension direction of the I-shaped suspension beam 43.

[0050] like Figure 5 As shown, the moving assembly 45 includes a pair of driving sprockets 451 and driven sprockets 452 rotatably mounted on the I-beam 43, a servo motor 453 fixed to the working beam and connected at its output end to the driving sprockets 451, a chain 454 mounted on the driving sprockets 451 and driven sprockets 452, and multiple L-shaped connectors 455 connecting the moving body 44 and the chain 454. By employing the moving assembly 45, when the moving body 44 needs to be moved, the servo motor 453 drives the driving sprockets 451 to rotate, causing the driving sprockets 451 to drive the chain 454 and driven sprockets 452 to move. Then, the L-shaped connectors 455 connecting the moving body 44 and the chain 454 follow the chain 454, causing the moving body 44 to move linearly along the I-beam 43.

[0051] like Figure 8As shown, the rotating assembly 49 includes a sliding plate 491 that is horizontally slidably disposed on the lifting frame 47, a pair of elongated holes 492 that are opened on the sliding plate 491 and are V-shaped with each other, a pair of sliding rods 493 that are respectively fixed to the bottom of the two rotating rods 48 and pass through the two elongated holes 492, a gear 494 that is rotatably disposed on the lifting frame 47, a plurality of teeth 495 that are evenly disposed on one side of the sliding plate 491 and mesh with the gear 494, and a worm gear reducer motor 496 that is fixed on the lifting frame 47 and whose output end is connected to the gear 494. By employing the aforementioned rotating component 49, when it is necessary to drive the two rotating rods 48 to rotate synchronously in opposite directions, the worm gear reducer motor 496 will drive the gear 494 to rotate, causing the gear 494 to mesh with the teeth 495 on one side of the sliding plate 491. Then, under the meshing of the gear 494 and the teeth 495, the sliding plate 491 slides relative to the lifting frame 47. Since the sliding rods 493 at the bottom of the two rotating rods 48 slide in the elongated holes 492 on the sliding plate 491, and the two elongated holes 492 are in a V-shape on the sliding plate 491, the two sliding rods 493 will slide relative to the two elongated holes 492 as the sliding plate 491 slides. During the sliding process, the distance between the two sliding rods 493 continuously decreases or increases. Finally, the two rotating rods 48 rotate synchronously and in opposite directions relative to the lifting frame 47 under the change in the distance between the two sliding rods 493.

[0052] like Figure 7 As shown, the tilting assembly 4i includes a second lifting hydraulic cylinder 4i1 whose cylinder body is fixed on the lifting frame 47, a lifting plate 4i2 rotatably connected to the piston rod end of the second lifting hydraulic cylinder 4i1, three support arms 4i3 fixedly connected to the side walls of the lifting plate 4i2, a second elongated hole 4i4 opened on the support arm 4i3, a second sliding rod 4i5 sliding in the second elongated hole 4i4, and a pair of connecting rods 4i6 fixedly connected to the two ends of the second sliding rod 4i5. The center of the lifting plate 4i2 coincides with the rotation center of the rotating plate, and the lifting plate 4i2 is located below the rotating plate. The three support arms 4i3 are horizontally located in the gaps of three pairs of cranks 4f. The connecting rods 4i6 at both ends of the second sliding rod 4i5 are respectively fixedly connected to the cranks 4f on both sides of the support arm 4i3, and the connecting rods 4i6 and the cranks 4f are perpendicular to each other.

[0053] By adopting the above technical solution, when crank 4f needs to be rotated, the lifting hydraulic cylinder 4i1 first extends its piston rod, causing the lifting plate 4i2 at the end of the piston rod and the three support arms 4i3 connected to the side wall of the lifting plate 4i2 to descend relative to the lifting frame 47. Then, the sliding rod 4i5, which slides in the elongated hole 4i4 on the support arm 4i3, descends along with the support arm 4i3 and pulls down the connecting rod 4i6. Since the connecting rod 4i6 is fixedly connected to crank 4f... Crank 2 4f is hinged to the fixed seat 4d at the bottom of the rotating disk. The rotating disk is rotatably connected to the lifting frame 47. Therefore, during the downward movement of the lifting disk 4i2, slide rod 2 4i5 will continuously pull away from the rotating disk or fixed seat 4d. At the same time, it slides along the elongated hole 2 4i4. Meanwhile, the connecting rod 2 4i6 is pulled by slide rod 2 4i5 and will rotate together with crank 2 4f relative to the fixed seat 4d. This method is used to achieve the effect of driving all crank 2 4f to rotate simultaneously.

[0054] like Figures 6-8As shown, the lifting frame 47 includes a support plate 471 that fixes and supports the lifting hydraulic cylinder 46, a support plate 472 that rotates and supports the two rotating rods 48, a support plate 473 that rotates and supports the rotating plate 4c, a pair of connecting blocks 474 that connect the bottom of the support plate 471 and the top of the support plate 472, and four connecting rods 475 that connect the bottom of the support plate 472 and the top of the support plate 473. The two lifting hydraulic cylinders 46 are fixed to the bottom of the support plate 471 and located on both sides of the support plate 472. The piston rods of the lifting hydraulic cylinders 46 slide through the support plate 471, and their heads are fixedly connected to the bottom of the U-shaped vehicle. The rotating rods 48 rotate and move in the gap between the support plate 471 and the support plate 472, and the connecting blocks 474 are symmetrically located on both sides of the rotation center of the rotating rods 48. The support plate 472 is hollow inside, and a pair of connecting blocks 474 are provided on the side wall of the support plate 472. A square tube opening 472a allows the sliding plate 491 to slide through. A gear 494 rotates inside the second support plate 472. A worm gear reducer motor 496 is fixed to the outer bottom of the second support plate 472, and the output end of the worm gear reducer motor 496 rotates through the inside of the second support plate 472 to connect with the gear 494. An arc-shaped hole 472b is provided on the second support plate 472 for two sliding rods 493 to slide. The sliding rods 493 pass through the arc-shaped hole 472b and extend into the second support plate 472, and slide on the elongated hole 492 on the sliding plate 491. A second lifting hydraulic cylinder 4i1 is fixed to the top of the third support plate 473 and is located in the middle of the four connecting rods 475. The center of the rotating plate 4c rotates to connect to the bottom of the third support plate 473. The piston rod of the second lifting hydraulic cylinder 4i1 rotates through the third support plate 473 and the rotating plate 4c, and its head rotates to connect to the center of the lifting plate 4i2. By adopting the above-mentioned lifting frame 47 structure, it can not only stably support the lifting hydraulic cylinder 46, the rotating rod 48, the lifting hydraulic cylinder 4i1, and the rotating plate 4c, but also reasonably distribute the movement of the above four components at height positions that do not interfere with each other, thereby ensuring the stable and safe operation of each component.

Claims

1. A boring machine for producing lightweight axle housings, characterized in that, The application relates to a bridge housing positioning mechanism, which comprises a vertical main boring machine (1), two horizontal auxiliary boring machines (2), a bridge housing positioning mechanism (3) arranged on the workbench of the vertical main boring machine (1), a hydraulic chuck I (11) installed on the main shaft of the vertical main boring machine (1), a boring cutter I (12) fixed on the movable chuck jaw of the hydraulic chuck I (11), a pair of boring cutter II (13) fixed on the disc body of the hydraulic chuck I (11), a hydraulic chuck II (21) installed on the main shaft of the two horizontal auxiliary boring machines (2), and a boring cutter III (22) fixed on the movable chuck jaw of the hydraulic chuck II (21), wherein the main shaft box of the vertical main boring machine (1) vertically moves linearly and drives the hydraulic chuck I (11), the boring cutter I (12) and the boring cutter II (13) to approach or move away from the top of the workbench, the boring cutter I (12) is located above the two boring cutter II (13) and rotates to bore the edge surface of the central hole of the bridge housing, the two boring cutter II (13) are parallel and simultaneously rotate to bore two inner holes of the bridge housing, the two horizontal auxiliary boring machines (2) are symmetrically arranged on the two sides of the workbench of the vertical main boring machine (1) and do not have independent workbenches, the main shaft box of the horizontal auxiliary boring machine (2) moves horizontally linearly and drives the hydraulic chuck II (21) and the boring cutter III (22) to approach or move away from one side of the workbench of the vertical main boring machine (1), the boring cutter III (22) rotates to bore the end of the bridge housing, and the automatic feeding mechanism (4) further comprises a roller conveyor (41) for conveying the bridge housing, a supporting column (42) vertically arranged on one side of the roller conveyor (41), a I-shaped suspension beam (43) fixedly connected with one end of the supporting column (42) and horizontally arranged above the roller conveyor (41), a moving vehicle body (44) suspendedly arranged on the I-shaped suspension beam (43), a moving assembly (45) for driving the moving vehicle body (44) to move along the I-shaped suspension beam (43), a pair of lifting hydraulic cylinders I (46) with one end fixedly connected with the moving vehicle body (44), a lifting frame body (47) fixedly connected with the cylinder bodies of the two lifting hydraulic cylinders I (46), a pair of rotating rods (48) crossly arranged and centrally hingedly connected with the lifting frame body (47), a rotating assembly (49) for driving the two rotating rods (48) to synchronously and reversely rotate relative to the lifting frame body (47), a pair of positioning rods (4a) vertically and parallelly arranged and fixedly connected with two ends of the rotating rods (48), a positioning cylinder (4b) rotatably arranged on the positioning rods (4a), a rotating plate (4c) centrally rotatably connected with the lifting frame body (47), three fixing bases (4d) fixedly arranged on the bottom of the rotating plate (4c) and uniformly arranged around the center of the rotating plate (4c), a pair of cranks I (4e) and a pair of cranks II (4f) hingedly connected with two sides of the fixing bases (4d) at one end, a connecting rod I (4g) simultaneously hingedly connected with the other ends of the two cranks I (4e) and the two cranks II (4f), a tensioning plate (4h) fixedly connected with one end of the connecting rod I (4g) and in the shape of a circular arc, and a turnover assembly (4i) for driving the two cranks II (4f) to overturn relative to the fixing bases (4d). The vertical main boring machine (1) and the support column (42) are located on both sides of the roller conveyor (41), the I-shaped suspension beam (43) is horizontally located above the roller conveyor (41) and the workbench of the vertical main boring machine (1); the positioning rods (4a) on the two rotating rods (48) are symmetrical to each other, and the positioning barrels (4b) on the two positioning rods (4a) can clamp and position the end part of the axle housing; the crank one (4e) and the crank two (4f) are parallel to each other and have equal lengths, the connecting rod one (4g) is horizontally located between the two crank ones (4e) or the two crank twos (4f), and the two crank ones (4e) or the two crank twos (4f) are respectively hingedly connected to the two sides of the connecting rod one (4g); the three tensioning plates (4h) can jointly contact and tension the inner hole walls of the axle housing.

2. The boring device for producing a light vehicle axle housing according to claim 1, characterized in that: The axle housing positioning mechanism (3) comprises a circular base (31) fixed to the middle part of the workbench of the vertical main boring machine (1), four support oil cylinders (32) vertically fixed to the top of the circular base (31), four positioning and clamping oil cylinders (33) horizontally fixed to the circular base (31), a pair of I-shaped bases (34) fixed to the workbench of the vertical main boring machine (1) and located on both sides of the circular base (31), a pair of sliding tables one (35) and two (36) sliding on the I-shaped bases (34), a sliding assembly (37) driving the sliding table one (35) and the sliding table two (36) to slide on the I-shaped bases (34) and move close to or away from each other, and a pair of concave-shaped clamping plates (38) fixed to the sliding table one (35) and the sliding table two (36) respectively and symmetrical to each other; the piston rod heads of the four support oil cylinders (32) jointly support and contact the bottom wall of the middle part of the axle housing; the piston rod heads of the four positioning and clamping oil cylinders (33) jointly contact and clamp the outer side wall of the middle part of the axle housing; the I-shaped bases (34) are located below the two end parts of the axle housing respectively, and the sliding table one (35) and the sliding table two (36) on the I-shaped bases (34) are located on both sides of the end parts of the axle housing, and the concave sides of the concave-shaped clamping plates (38) on the sliding table one (35) and the sliding table two (36) can jointly contact and clamp the side walls of the end parts of the axle housing.

3. The boring device for producing a light vehicle axle housing according to claim 2, characterized in that: The circular base (31) is uniformly provided with eight T-shaped sliding grooves (311); the bottom of the supporting oil cylinder (32) is fixedly provided with a mounting bottom plate (321), and the bottom of the mounting bottom plate (321) is fixedly provided with a T-shaped sliding block one (322) sliding in the T-shaped sliding groove (311); the top of the mounting bottom plate (321) is provided with two threaded holes one (322a) vertically penetrating the T-shaped sliding block one (322), and the threaded holes one (322a) are threadedly connected with locking screws one (323); the cylinder body of the positioning and clamping oil cylinder (33) is fixedly provided with an L-shaped mounting plate one (331), and the bottom of the L-shaped mounting plate one (331) is fixedly provided with a T-shaped sliding block two (332) sliding in the T-shaped sliding groove (311); the horizontal part of the L-shaped mounting plate one (331) is provided with two threaded holes two (332a) vertically penetrating the T-shaped sliding block two (332), and the threaded holes two (332a) are threadedly connected with locking screws two (333); the T-shaped sliding block one (322) at the bottom of all the mounting bottom plates (321) and the T-shaped sliding block two (332) at the bottom of all the L-shaped mounting plate one (331) are respectively sliding in the eight T-shaped sliding grooves (311); the L-shaped mounting plate two (361) is fixedly arranged on the sliding table one (35) or the sliding table two (36), one side of the L-shaped mounting plate two (361) is provided with a recess (361a) for inserting the concave-shaped clamping plate (38), and the top of the L-shaped mounting plate two (361) is provided with a pair of threaded holes three (361b) communicating with the recess (361a), and the threaded holes three (361b) are threadedly connected with locking screws three (361c); the concave-shaped clamping plate (38) is provided with a locking hole (381) for penetrating the locking screws three (361c).

4. The boring device for producing a light vehicle axle housing according to claim 1, characterized in that: The positioning rod (4a) is fixedly provided with a horizontal lifting plate (4a1), and the lifting plate (4a1) contacts and lifts the bottom of the bridge shell; the side of the tensioning plate (4h) contacting the inner hole of the bridge shell is fixedly covered with a layer of anti-skid rubber pad (4h1).

5. The boring device for producing a light vehicle axle housing according to claim 2, characterized in that: The sliding assembly (37) comprises a pair of moving rods (371) and (372) horizontally moving in parallel to the two sides of the circular base (31) and between the two I-shaped bases (34), a pair of connecting rods (373) connecting the two sliding tables (35) and the moving rods (371), a pair of connecting rods (374) connecting the two sliding tables (36) and the moving rods (372), two pairs of moving plates (375) fixed on the moving rods (371) and (372) respectively, a pair of penetrating rods (376) penetrating the moving plates (375) vertically, a lifting plate (377) fixed on the upper ends of the penetrating rods (376) and having a concave cross section, a friction plate (378) fixed on the lower ends of the penetrating rods (376) and having an isosceles trapezoidal cross section, a pair of friction strips (379) symmetrically located on the two sides of the friction plate (378) and having a right trapezoidal cross section, and springs (370) sleeved on the penetrating rods (376) and fixed on the bottom of the lifting plate (377) and the top of the moving plates (375) respectively. One side of the sliding table (35) and one end of the connecting rod (373) are fixedly connected with an L-shaped mounting plate three (351), one side of the sliding table (36) and one end of the connecting rod (374) are fixedly connected with an L-shaped mounting plate four (362), the connecting rod (373) and the connecting rod (374) are parallel to each other and slide through the L-shaped mounting plate four (362) and the L-shaped mounting plate three (351) respectively, and the two moving plates (375) on the moving rod (371) are symmetric to the two moving plates (375) on the moving rod (372) and are located below the four positioning rods (4a). When the lifting frame (47) approaches the workbench of the vertical main boring machine (1), the four positioning rods (4a) can be inserted into the grooves (361a) of the lifting plates (377) above the two pairs of moving plates (375) and press the lifting plates (377) to compress the springs (370), and when the rotating rod (48) is flipped, the positioning rods (4a) inserted into the grooves (361a) of the lifting plates (377) can slide linearly along the grooves (361a) of the lifting plates (377). The friction strips (379) are fixed on the workbench of the vertical main boring machine (1), the friction strips (379) and the inclined surfaces of the friction plate (378) are uniformly provided with anti-skid textures, and before the lifting plate (377) is pressed by the positioning rods (4a), the two inclined surfaces of the friction plate (378) are tightly attached to the inclined surfaces of the two friction strips (379) under the elastic force of the springs (370).

6. The boring device for producing a light vehicle axle housing according to claim 1, characterized in that: The mobile vehicle body (44) comprises a U-shaped vehicle body (441), two groups of rollers (442) rotatably arranged on the two inner side walls of the U-shaped vehicle body (441), and a plurality of rollers (443) horizontally and parallel arranged and rotatably connected to the two inner side walls of the U-shaped vehicle body (441) at two ends, wherein the rollers (442) and the rollers (443) are parallel to each other, the rollers (442) roll on the top of the lower horizontal part of the I-shaped suspension beam (43), and the rollers (443) roll on the bottom of the lower horizontal part of the I-shaped suspension beam (43); the moving assembly (45) comprises a pair of driving sprocket wheels (451) and driven sprocket wheels (452) rotatably arranged on the I-shaped suspension beam (43), a servo motor (453) fixed on the working suspension beam and having an output end connected to the driving sprocket wheel (451), a chain (454) installed on the driving sprocket wheel (451) and the driven sprocket wheel (452), and a plurality of L-shaped connecting pieces (455) connecting the U-shaped vehicle body (441) and the chain (454).

7. The boring apparatus for producing a light truck axle housing according to claim 6, characterized in that: The rotating assembly (49) comprises a sliding plate (491) horizontally slidingly arranged on the lifting frame body (47), a pair of long slot one (492) formed on the sliding plate (491) and mutually in a spread shape, a pair of sliding rods one (493) respectively fixed on the bottom of the two rotating rods (48) and respectively penetrating through the two long slot one (492), a gear (494) rotatably arranged on the lifting frame body (47), a plurality of meshing teeth (495) uniformly arranged on one side of the sliding plate (491) and meshing with the gear (494), and a worm gear and worm reduction motor (496) fixed on the lifting frame body (47) and having an output end connected to the gear (494).

8. The boring apparatus for producing a light vehicle axle housing according to claim 7, characterized in that: The turnover assembly (4i) comprises a lifting hydraulic cylinder two (4i1) fixed on the lifting frame body (47), a lifting disc (4i2) rotatably connected to the end of the piston rod of the lifting hydraulic cylinder two (4i1), three support arms (4i3) fixedly connected to the side walls of the lifting disc (4i2), a long slot two (4i4) formed on the support arm (4i3), a sliding rod two (4i5) slidingly arranged in the long slot two (4i4), and a pair of connecting rods two (4i6) fixedly connected to the two ends of the sliding rod two (4i5), wherein the center of the lifting disc (4i2) coincides with the rotation center of the rotating disc, the lifting disc (4i2) is located below the rotating disc, the three support arms (4i3) are horizontally located in the gaps of the three pairs of crank two (4f), the connecting rods two (4i6) at the two ends of the sliding rod two (4i5) are respectively fixedly connected to the crank two (4f) on the two sides of the support arm (4i3), and the connecting rods two (4i6) and the crank two (4f) are perpendicular to each other.

9. The boring apparatus for producing a light truck axle housing according to claim 1, characterized in that: The lifting frame body (47) comprises a support plate one (471) for fixing and supporting a lifting hydraulic cylinder one (46), a support plate two (472) for rotating and supporting two rotating rods (48), a support plate three (473) for rotating and supporting a rotating plate (4c), a connecting block (474) for connecting the bottom of the support plate one (471) and the top of the support plate two (472), and four connecting rods three (475) for connecting the bottom of the support plate two (472) and the top of the support plate three (473), the rotating assembly (49) is arranged on the support plate two (472), and the turnover assembly (4i) is arranged on the support plate three (473).

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