Axle housing surface milling and drilling tool

Abstract

The invention provides an axle housing surface milling and drilling tool. The axle housing surface milling and drilling tool comprises a base, a mounting seat, a first clamping mechanism and a feeding mechanism, the mounting seat is rotationally arranged on the base; the first clamping mechanism comprises mounting plates, first fixing assemblies, supporting seats, clamping blocks and a transmission mechanism, the mounting plates are fixed to the two ends of the mounting seats through the first fixing assemblies, the two supporting seats are arranged on the two mounting plates, and the clamping blocks are slidably arranged on the supporting seats; the mounting seats rotate to drive the clamping blocks to slide close to or away from the supporting seats through the transmission mechanisms, and the sliding directions of the clamping blocks on the two groups of mounting plates are opposite; and the feeding mechanism comprises a sliding plate and a second fixing assembly, the sliding plate is arranged on the base in a sliding mode, the second fixing assembly is arranged on the sliding plate, and fixation of the first fixing assembly to the mounting plate is relieved or recovered while clamping or canceling clamping of the mounting plate. And machining, feeding and discharging can be conducted synchronously, the to-be-machined axle housing can be clamped automatically, clamping of the machined axle housing can be omitted, the machining efficiency is improved, and the labor intensity is relieved.

Description

Technical Field

[0001] This invention relates to the field of bridge housing processing technology, and specifically to a milling and drilling tool for bridge housings. Background Technology

[0002] The axle housing is a key load-bearing component of an automobile axle, primarily responsible for supporting and protecting the final drive, differential, and half-shafts. Currently, in the mass production of axle housings, tooling, as the core component for positioning and clamping the axle housing, directly determines the processing quality and production cycle time due to its structural rationality, and is one of the key factors restricting the large-scale production of axle housings.

[0003] Existing bridge housing milling and drilling fixtures are mostly simple in structure. They require waiting for the current bridge housing to be finished, manually releasing the clamps and removing the finished product before the next bridge housing to be processed can be loaded and clamped. This results in the machine tool being idle for extended periods during loading and unloading, reducing processing efficiency. Furthermore, manual clamping and releasing increases the labor intensity for workers. Therefore, to address these technical problems, a new bridge housing milling and drilling fixture is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a milling and drilling fixture for bridge housings, which facilitates simultaneous machining and loading / unloading, and can automatically clamp the bridge housings to be machined and remove the clamping of already machined bridge housings, significantly improving machining efficiency and reducing the labor intensity of workers.

[0005] A bridge housing milling and drilling fixture, comprising: The base is used for mounting on a machine tool; Mounting base, rotatably mounted on the top of the base; The first clamping mechanism includes a mounting plate, a first fixing component, a support base, clamping blocks, and a transmission mechanism. The mounting plates are fixed to both ends of the mounting base via the first fixing component. Two sets of support bases are positioned opposite each other at the top of the two sets of mounting plates. Clamping blocks are vertically slidably mounted on the top of each of the four sets of support bases. The transmission mechanism is mounted on the two sets of mounting plates and connects the base to the four sets of clamping blocks. Rotation of the mounting base allows the clamping blocks to slide closer to or away from the support bases via the transmission mechanism, and the sliding directions of the clamping blocks on the two sets of mounting plates are opposite. The feeding mechanism includes a sliding plate and a second fixing component. The sliding plate is slidably disposed on the top of the base, and the second fixing component is disposed on the sliding plate and can clamp or unclamp the mounting plate, and release or restore the fixing of the mounting plate by the first fixing component while clamping or unclamping the mounting plate.

[0006] The beneficial effects of the above-mentioned bridge housing milling and drilling fixture are as follows: The bridge housing to be processed is placed on two sets of support seats on one end of a mounting plate. The mounting seats are then driven to rotate, causing the mounting plate and the other end mounting plate to rotate. A transmission mechanism drives two sets of clamping blocks on the mounting plate to move closer to the support seats to clamp and fix the bridge housing to be processed. Simultaneously, two sets of clamping blocks on the other end mounting plate move away from the support seats to release the already processed bridge housing. When the mounting plate rotates above the slide plate, the second fixing component clamps the mounting plate, and the first fixing component releases its fixation. At this point, the slide plate can be driven to slide and move the bridge housing... The mounting plate moves the bridge housing to be processed to the processing position for milling and hole drilling. While processing, the processed bridge housing can be removed from another set of mounting plates and the bridge housing to be processed can be repositioned. After processing is completed, the drive slide plate slides back to reset, and then the second fixing component is driven to release the clamping of the mounting plate, and the first fixing component is driven to restore the fixing of the mounting plate. The mounting base is driven to rotate again to enter the next round of processing. This facilitates the simultaneous processing and loading / unloading, and can automatically clamp the bridge housing to be processed and release the clamping of the processed bridge housing, which greatly improves processing efficiency and reduces the labor intensity of workers.

[0007] In one embodiment, the transmission mechanism includes a first screw, a linkage component, and a first transmission component; the first screw is vertically and rotatably mounted on each of the four sets of support seats, and the top ends of the four sets of first screws are threadedly connected to the four sets of clamping blocks respectively; the linkage component for driving the two sets of first screws to rotate synchronously is provided on both sets of mounting plates; the first transmission component is connected to one set of first screws on the two sets of mounting plates and the base respectively, for driving the two sets of first screws to rotate in opposite directions when the mounting seat rotates.

[0008] In one embodiment, the linkage component includes a first drive shaft, a first bevel gear, and a second bevel gear; the first drive shaft is rotatably mounted on the mounting plate, and the first bevel gear is provided at both ends of the first drive shaft; the second bevel gear is coaxially provided at the bottom ends of the two sets of first screws, and the two sets of second bevel gears mesh with the two sets of first bevel gears respectively.

[0009] In one embodiment, the first transmission assembly includes two sets of first gears, an internal gear ring, and an external gear ring; the two sets of first gears are coaxially connected to one of the two sets of first screws on the mounting plates, and the base is provided with the internal gear ring and the external gear ring coaxial with the rotation axis of the mounting base. Both sets of first gears can mesh with the internal gear ring and the external gear ring, and when one set of first gears meshes with the internal gear ring, the other set of first gears meshes with the external gear ring.

[0010] In one embodiment, the first fixing component includes a fixing rod and a spring; mounting slots are provided on both sides of the mounting plate, and the fixing rod is provided in each of the two sets of mounting slots, which slides along the width direction of the mounting plate; multiple sets of springs are provided on the opposite sides of the two sets of fixing rods, which abut against the sidewalls of the mounting slots; locking blocks and pressure blocks are provided on the opposite sides of the two sets of fixing rods; slots are provided at both ends of the mounting base, and locking slots are provided on both sides of the slots; one end of the mounting plate can pass through the slot, and the two sets of locking blocks pass through the two sets of locking slots.

[0011] In one embodiment, the second fixing component includes a first clamping plate and a driving component; both sides of the slide plate have clearance grooves at their top ends, and the first clamping plate is rotatably disposed in both sets of clearance grooves. The driving component is disposed on the slide plate and connected to the two sets of first clamping plates, and is used to drive the two sets of first clamping plates to close or open and rotate. When the two sets of first clamping plates close and rotate, they can clamp the mounting plate and press the two sets of pressure blocks to make the two sets of locking blocks exit the two sets of locking slots. When the two sets of first clamping plates open and rotate, they can retract into the two sets of clearance grooves.

[0012] In one embodiment, the drive assembly includes a worm gear, a second drive shaft, and a worm; the worm gear is coaxially disposed at the pivot of both sets of the first clamping plates, the second drive shaft is rotatably disposed at one end of the slide plate, and the worm is disposed at both ends of the second drive shaft, the helices of the two sets of worms are opposite, and the two sets of worms respectively mesh with the two sets of worm gears.

[0013] In one embodiment, the feeding mechanism further includes a second screw and a first motor; a guide groove is provided at the top of the base, a guide block is provided at the bottom of the slide plate, the guide block is slidably disposed in the guide groove, the second screw is rotatably disposed in the guide groove and threadedly connected to the guide block, the first motor is disposed in the guide groove, and its output end is coaxially connected to the second screw.

[0014] In one embodiment, a second clamping mechanism is further included. The second clamping mechanism is provided on both sets of mounting plates. The second clamping mechanism includes a second clamping plate and a second transmission assembly. The second clamping plate is slidably provided on the top of the opposite side of both sets of support seats. The second transmission assembly connects the two sets of clamping blocks and the two sets of second clamping plates, and is used to drive the two sets of second clamping plates to move relatively closer or further away when the two sets of clamping blocks move closer or further away from the support seats.

[0015] In one embodiment, the second transmission assembly includes a third screw, a second gear, and a rack; the third screw is rotatably mounted on both sets of support seats, the helical lines of the two sets of third screws are opposite and are threadedly connected to the two sets of second clamping plates respectively, the second gear is coaxially mounted on both sets of third screws, the rack is mounted on both sets of clamping blocks, and the racks mesh with the two sets of second gears respectively. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 A three-dimensional structural schematic diagram of a bridge shell milling and drilling fixture provided in an embodiment of the present invention; Figure 2 for Figure 1 A three-dimensional structural schematic diagram of another state of a bridge shell milling and drilling tool is shown; Figure 3 for Figure 1 An exploded view of a bridge shell milling and drilling fixture shown; Figure 4 for Figure 1 An exploded view of the first clamping mechanism in a bridge housing milling and drilling fixture; Figure 5 for Figure 1 An exploded view of the first fixing component in a bridge housing milling and drilling fixture; Figure 6 for Figure 1 An exploded view of the feeding mechanism in a milling and drilling fixture for a bridge housing is shown. Figure 7 for Figure 1 An exploded view of the second clamping mechanism in a bridge housing milling and drilling fixture.

[0018] Figure label: 10. Base; 101. Guide groove; 102. Second motor; 20. Mounting base; 201. Slot; 202. Card slot; 30. Mounting plate; 301. Support base; 3011. First guide rod; 3012. Second guide rod; 302. Clamping block; 303. First screw; 304. First drive shaft; 305. First bevel gear; 306. Second bevel gear; 307. First gear; 308. Internal gear ring; 309. External gear ring; 40. Slide plate; 401. Second screw; 402. First motor; 403. Guide block; 50. Fixing rod; 501. Spring; 502. Mounting slot; 503. Locking block; 504. Pressure block; 60. First clamping plate; 601. Relief groove; 602. Worm gear; 603. Second drive shaft; 604. Worm; 70. Second clamping plate; 701. Third screw; 702. Second gear; 703. Rack. Detailed Implementation

[0019] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0020] Please see Figures 1 to 3 One embodiment of a bridge housing milling and drilling fixture includes a base 10, a mounting base 20, a first clamping mechanism, and a feeding mechanism.

[0021] The base 10 is used for mounting on a machine tool. The mounting seat 20 is rotatably mounted on the top of the base 10. The first clamping mechanism includes a mounting plate 30, a first fixing component, a support seat 301, a clamping block 302, and a transmission mechanism. The mounting seat 20 is fixed to the mounting plate 30 at both ends by the first fixing component. The tops of the two sets of mounting plates 30 are respectively provided with two sets of support seats 301 facing each other. The tops of the four sets of support seats 301 are each vertically slidably provided with clamping blocks 302. The transmission mechanism is provided on the two sets of mounting plates 30 and connects the base 10 and the four sets of clamping blocks 302. The rotation of the mounting seat 20 can drive the clamping blocks 302 to slide closer to or away from the support seats 301 through the transmission mechanism, and the sliding directions of the clamping blocks 302 on the two sets of mounting plates 30 are opposite. The feeding mechanism includes a slide plate 40 and a second fixing component. The slide plate 40 is slidably disposed on the top of the base 10. The second fixing component is disposed on the slide plate 40 and can clamp or unclamp the mounting plate 30. While clamping or unclamping the mounting plate 30, the first fixing component can release or restore the fixing of the mounting plate 30 to the mounting plate 30.

[0022] In the above embodiment, the two ends of the bridge housing to be processed are placed on two sets of support seats 301 on one end mounting plate 30, and then the mounting seat 20 is driven to rotate. The rotation of the mounting seat 20 drives the mounting plate 30 and the other end mounting plate 30 to rotate. The transmission mechanism drives the two sets of clamping blocks 302 on the mounting plate 30 to move closer to the support seats 301 to clamp and fix the bridge housing to be processed. The two sets of clamping blocks 302 on the other end mounting plate 30 move away from the support seats 301 to release the fixed bridge housing. When the mounting plate 30 rotates to above the slide plate 40, the second fixing component is driven to clamp the mounting plate 30, and the first fixing component releases the fixing of the mounting plate 30. Once the mounting plate 30 is moved, the slide plate 40 can be driven to move the bridge shell to be processed to the processing position for milling and hole turning. At the same time, the processed bridge shell can be removed from another set of mounting plates 30 and the bridge shell to be processed can be repositioned. After processing is completed, the slide plate 40 is driven to slide in the opposite direction to reset, and the second fixing component is driven to release the clamping of the mounting plate 30, and the first fixing component is driven to restore the fixing of the mounting plate 30. The mounting base 20 is driven to rotate again to enter the next round of processing. This facilitates the simultaneous processing and loading / unloading, and can automatically clamp the bridge shell to be processed and release the clamping of the processed bridge shell, which greatly improves processing efficiency and reduces the labor intensity of workers.

[0023] Specifically, in the above embodiment, a second motor 102 is provided at the bottom of the base 10, and the output end of the second motor 102 is coaxially connected to the rotating shaft of the mounting base 20. This facilitates driving the mounting base 20 to rotate.

[0024] Please see Figure 3 and Figure 4 In one embodiment, the transmission mechanism includes a first screw 303, a linkage component, and a first transmission component; each of the four sets of support seats 301 is vertically and rotatably provided with a first screw 303, the top ends of the four sets of first screws 303 are respectively threadedly connected to four sets of clamping blocks 302, each of the two sets of mounting plates 30 is provided with a linkage component for driving the two sets of first screws 303 to rotate synchronously, and the first transmission component is respectively connected to one of the first screws 303 on the two sets of mounting plates 30 and the base 10, for driving the two sets of first screws 303 to rotate when the mounting seat 20 rotates, and the rotation directions are opposite.

[0025] In the above embodiment, the rotation of the mounting base 20 drives one of the first screws 303 in the two sets of mounting plates 30 to rotate in opposite directions via the first transmission component. At the same time, the linkage component drives the two sets of first screws 303 on the same mounting plate 30 to rotate synchronously. This achieves the following: when the mounting base 20 rotates, the two sets of first screws 303 on one mounting plate 30 rotate and thread-match with the two sets of clamping blocks 302, driving the two sets of clamping blocks 302 to move closer to the support base 301 to clamp and fix the bridge shell to be processed. The two sets of first screws 303 on the other mounting plate 30 rotate in the opposite direction and thread-match with the two sets of clamping blocks 302, driving the two sets of clamping blocks 302 to move away from the support base 301 to cancel the clamping and fixing of the processed bridge shell. This facilitates synchronous loading and unloading. Furthermore, the synchronous rotation of the two sets of first screws 303 on the same mounting plate 30 ensures that the two sets of clamping blocks 302 move synchronously, avoiding uneven force during bridge shell clamping, preventing bridge shell deformation, and ensuring processing accuracy.

[0026] Specifically, in the above embodiment, each of the four sets of support bases 301 has a first guide rod 3011 vertically mounted at its top, and each of the four sets of clamping blocks 302 is slidably sleeved on the four sets of first guide rods 3011 in the vertical direction. By setting the first guide rods 3011 to limit the clamping blocks 302, the phenomenon of the clamping blocks 302 rotating when the first screw 303 rotates is prevented, thereby ensuring the stability of the movement of the clamping blocks 302.

[0027] Based on the above embodiments, the linkage component further includes a first drive shaft 304, a first bevel gear 305, and a second bevel gear 306. The first drive shaft 304 is rotatably mounted on the mounting plate 30. First bevel gears 305 are provided at both ends of the first drive shaft 304, and second bevel gears 306 are coaxially provided at the bottom ends of both sets of first screws 303. The two sets of second bevel gears 306 mesh with the two sets of first bevel gears 305 respectively. When one set of first screws 303 rotates, the second bevel gears 306 drive the first bevel gears 305 to rotate, thereby driving the first drive shaft 304 to rotate. The first drive shaft 304, through the first bevel gear 305 at the other end, drives the other set of second bevel gears 306 to rotate, ultimately achieving synchronous rotation of the two sets of first screws 303, making it convenient to drive the two sets of first screws 303 to rotate synchronously.

[0028] Based on the above embodiments, the first transmission assembly further includes two sets of first gears 307, an internal gear ring 308, and an external gear ring 309; the two sets of first gears 307 are coaxially connected to one of the first screws 303 on the two sets of mounting plates 30, and the base 10 is provided with an internal gear ring 308 and an external gear ring 309 coaxial with the rotation axis of the mounting base 20. Both sets of first gears 307 can mesh with the internal gear ring 308 and the external gear ring 309, and when one set of first gears 307 meshes with the internal gear ring 308, the other set of first gears 307 meshes with the external gear ring 309.

[0029] In the above embodiment, when the mounting base 20 rotates, the mounting base 20 drives the two sets of first gears 307 to rotate through the two sets of mounting plates 30. When one set of first gears 307 meshes with the internal gear ring 308, the other set of first gears 307 meshes with the external gear ring 309. Since the teeth of the internal gear ring 308 and the external gear ring 309 are opposite, the two sets of first gears 307 can rotate in opposite directions, thereby driving the first screws 303 on the two sets of mounting plates 30 to rotate in opposite directions. Driving the first screws 303 on the two sets of mounting plates 30 to rotate in opposite directions is convenient, requires no additional drive structure, and reduces energy consumption.

[0030] Please see Figure 1 , Figure 2 , Figure 5 and Figure 6 In one embodiment, the first fixing component includes a fixing rod 50 and a spring 501; both sides of the mounting plate 30 are provided with mounting grooves 502, and both sets of mounting grooves 502 are provided with fixing rods 50 that slide along the width direction of the mounting plate 30. On the opposite sides of the two sets of fixing rods 50, multiple sets of springs 501 are provided that abut against the sidewalls of the mounting grooves 502. On the opposite sides of the two sets of fixing rods 50, there are locking blocks 503 and pressing blocks 504. The mounting base 20 is provided with slots 201 at both ends, and both sides of the slots 201 are provided with locking slots 202. One end of the mounting plate 30 can be inserted into the slot 201, and the two sets of locking blocks 503 are inserted into the two sets of locking slots 202.

[0031] Based on the above embodiments, the second fixing component further includes a first clamping plate 60 and a driving component; both sides of the slide plate 40 are provided with relief grooves 601, and the first clamping plates 60 are rotatably disposed in both relief grooves 601. The driving component is disposed on the slide plate 40 and connected to the two sets of first clamping plates 60, and is used to drive the two sets of first clamping plates 60 to close or open and rotate. When the two sets of first clamping plates 60 close and rotate, they can clamp the mounting plate 30 and press the two sets of pressure blocks 504 so that the two sets of locking blocks 503 can exit the two sets of locking slots 202. When the two sets of first clamping plates 60 open and rotate, they can retract into the two sets of relief grooves 601.

[0032] In the above embodiment, when the mounting base 20 rotates and drives the mounting plate 30 to rotate above the slide plate 40, the two sets of first clamping plates 60 are driven to close and rotate by the drive component. The two sets of first clamping plates 60 can clamp the mounting plate 30 by closing and rotating, and press the two sets of pressure blocks 504 to move the two sets of fixing rods 50 closer to each other and compress the spring 501. The two sets of fixing rods 50 can move the two sets of locking blocks 503 closer to each other. The two sets of locking blocks 503 can exit the two sets of locking slots 202, so as to facilitate the connection between the mounting plate 30 and the mounting base 20 while fixing the mounting plate 30 on the slide plate 40.

[0033] Conversely, by driving the two sets of first clamping plates 60 to rotate outward through the drive assembly, the clamping of the mounting plate 30 can be released, and the pressing of the pressure block 504 can be released. At this time, the reaction force of the spring 501 can cause the two sets of fixing rods 50 to move away from each other. The relative movement of the two sets of fixing rods 50 can cause the two sets of locking blocks 503 to pass through the two sets of locking slots 202, thereby facilitating the fixing of the mounting plate 30 to the mounting base 20 while releasing the connection between the sliding plate 40 and the mounting plate 30.

[0034] Please see Figure 6 In one embodiment, the drive assembly includes a worm gear 602, a second drive shaft 603, and a worm 604; worm gears 602 are coaxially arranged at the pivots of the two sets of first clamping plates 60, the second drive shaft 603 is rotatably arranged at one end of the slide plate 40, and worms 604 are arranged at both ends of the second drive shaft 603. The helical lines of the two sets of worms 604 are opposite, and the two sets of worms 604 mesh with the two sets of worm gears 602 respectively.

[0035] In the above embodiment, rotating the second transmission shaft 603 drives the two sets of worm gears 604 to rotate. The rotation of the two sets of worm gears 604 and their meshing with the two sets of worm wheels 602 can drive the two sets of first clamping plates 60 to close and rotate. Conversely, rotating the second transmission shaft 603 in the opposite direction can drive the two sets of first clamping plates 60 to open and rotate. It is convenient to drive the two sets of first clamping plates 60 to close or open and rotate.

[0036] Please see Figure 6 In one embodiment, the feeding mechanism further includes a second screw 401 and a first motor 402; a guide groove 101 is provided at the top of the base 10, and a guide block 403 is provided at the bottom of the slide plate 40. The guide block 403 is slidably disposed in the guide groove 101. The second screw 401 is rotatably disposed in the guide groove 101 and threadedly connected to the guide block 403. The first motor 402 is disposed in the guide groove 101, and its output end is coaxially connected to the second screw 401. By driving the second screw 401 to rotate through the first motor 402 and engaging with the guide block 403 through thread, the slide plate 40 can be moved, making the movement of the slide plate 40 convenient.

[0037] Please see Figure 1 and Figure 7 In one embodiment, a second clamping mechanism is also included. The two sets of mounting plates 30 are each provided with a second clamping mechanism. The second clamping mechanism includes a second clamping plate 70 and a second transmission assembly. The top of the two sets of support seats 301 on the opposite side is slidably provided with a second clamping plate 70. The second transmission assembly connects the two sets of clamping blocks 302 and the two sets of second clamping plates 70, and is used to drive the two sets of second clamping plates 70 to move relatively closer or further away when the two sets of clamping blocks 302 move closer or further away from the support seat 301.

[0038] In the above embodiment, when the two sets of clamping blocks 302 move close to the support base 301 to clamp and fix the bridge shell to be processed, the two sets of second clamping plates 70 can move relatively close to each other to clamp both ends of the bridge shell to be processed. By clamping both ends of the bridge shell to be processed, axial displacement of the bridge shell can be prevented, thereby further improving the stability of the bridge shell clamping.

[0039] Based on the above embodiments, the second transmission assembly further includes a third screw 701, a second gear 702, and a rack 703; the third screw 701 is rotatably mounted on both sets of support seats 301, the helical lines of the two sets of third screws 701 are opposite, and they are threadedly connected to the two sets of second clamping plates 70 respectively. The second gear 702 is coaxially mounted on both sets of third screws 701, and the rack 703 is mounted on both sets of clamping blocks 302. The two sets of racks 703 mesh with the two sets of second gears 702 respectively.

[0040] In the above embodiment, when the two sets of clamping blocks 302 move closer to the support base 301, the two sets of clamping blocks 302 drive the two sets of racks 703 to move downward. The downward movement of the two sets of racks 703 drives the two sets of third screws 701 to rotate through the two sets of second gears 702. The rotation of the two sets of third screws 701 engages with the two sets of second clamping plates 70, thus driving the two sets of second clamping plates 70 to move closer to each other. Conversely, when the two sets of clamping blocks 302 move away from the support base 301, the two sets of racks 703 move upward, thus driving the two sets of third screws 701 to rotate in the opposite direction. The reverse rotation of the two sets of third screws 701 engages with the two sets of second clamping plates 70, thus driving the two sets of second clamping plates 70 to move away from each other. This facilitates the synchronous driving of the two sets of second clamping plates 70 to move closer to or further away from the support base 301 when the two sets of clamping blocks 302 move closer to or further away from the support base 301, eliminating the need for additional power.

[0041] Specifically, in the above embodiment, each of the two sets of support seats 301 has a second guide rod 3012 parallel to the third screw 701 on its opposite side, and the two sets of second clamping plates 70 are slidably sleeved on the two sets of second guide rods 3012 respectively. By setting the second guide rods 3012 to limit the movement of the second clamping plates 70, the rotation of the second clamping plates 70 is prevented when the third screw 701 rotates, thereby ensuring the stability of the movement of the second clamping plates 70.

[0042] The specific implementation method of the above-mentioned bridge shell milling and drilling tool is as follows: By placing both ends of the bridge housing to be processed on two sets of support seats 301 on one end mounting plate 30, and then driving the second motor 102 to drive the mounting seat 20 to rotate, the rotation of the mounting seat 20 drives the mounting plate 30 and the other end mounting plate 30 to rotate. When the mounting plate 30 rotates, the first gear 307 on the mounting plate 30 meshes with the internal gear ring 308, which drives the first gear 307 to rotate. The rotation of the first gear 307 drives the first screw 303 to rotate. The rotation of the first screw 303 drives the first bevel gear 305 to rotate through the second bevel gear 306, which in turn drives the first transmission shaft 304 to rotate. The first transmission shaft 304 drives the other set of second bevel gears 306 to rotate through the first bevel gear 305 at the other end, thereby driving the two sets of first screws 303 on the mounting plate 30 to rotate synchronously. The synchronous rotation of the two sets of first screws 303 and their threaded engagement with the two sets of clamping blocks 302 can drive the two sets of clamping blocks 302 to move closer to the support seat 301 to clamp and fix the bridge housing to be processed.

[0043] When the mounting plate 30 at the other end rotates, the first gear 307 on the mounting plate 30 meshes with the external gear ring 309, which drives the first gear 307 to rotate in the opposite direction. The reverse rotation of the first gear 307 drives the two sets of first screws 303 on the mounting plate 30 to rotate synchronously in the opposite direction. The synchronous reverse rotation of the two sets of first screws 303 and their threaded engagement with the two sets of clamping blocks 302 can drive the two sets of clamping blocks 302 to move away from the support base 301 and cancel the clamping and fixing of the machined bridge housing.

[0044] When the mounting plate 30 with the machined bridge housing rotates onto the sliding plate 40, the second drive shaft 603 drives the two sets of worm gears 604 to rotate. The rotation of the two sets of worm gears 604 engages with the two sets of worm wheels 602, which drives the two sets of first clamping plates 60 to close and rotate. The two sets of first clamping plates 60 close and rotate to clamp the mounting plate 30, and press the two sets of pressure blocks 504 to move the two sets of fixing rods 50 closer together and compress the springs 501. The movement of the two sets of fixing rods 50 closer together drives the two sets of locking blocks 50. 3. When the two sets of locking blocks 503 move relatively close to each other, they can exit the two sets of locking slots 202. This fixes the mounting plate 30 on the slide plate 40 while disconnecting the mounting plate 30 from the mounting base 20. Then, the first motor 402 drives the second screw 401 to rotate and engages with the guide block 403 to drive the slide plate 40 to move the mounting plate 30 to the designated position for processing. During the processing, the processed bridge shell can be removed and the bridge shell to be processed can be repositioned.

[0045] After processing is completed, the first motor 402 drives the second screw 401 to rotate in the opposite direction, engaging with the guide block 403 to drive the slide plate 40 to reset the mounting plate 30. Then, the second transmission shaft 603 rotates in the opposite direction to drive the two sets of first clamping plates 60 to rotate outward. The outward rotation of the two sets of first clamping plates 60 releases the clamping of the mounting plate 30 and simultaneously releases the pressure on the pressure block 504. At this time, the reaction force of the spring 501 causes the two sets of fixing rods 50 to move away from each other. The relative movement of the two sets of fixing rods 50 allows the two sets of clamping blocks 503 to pass through the two sets of clamping slots 202, thereby releasing the connection between the slide plate 40 and the mounting plate 30 while fixing the mounting plate 30 to the mounting base 20. Finally, driving the mounting base 20 to rotate again allows the next round of processing to begin. This facilitates simultaneous processing and loading / unloading, and can automatically clamp the bridge shell to be processed and release the clamping of the processed bridge shell, greatly improving processing efficiency and reducing the labor intensity of workers.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A milling and drilling fixture for bridge shells, characterized in that, include: Base (10), for mounting on a machine tool; Mounting base (20) is rotatably mounted on the top of the base (10); The first clamping mechanism includes a mounting plate (30), a first fixing component, a support base (301), a clamping block (302), and a transmission mechanism. Both ends of the mounting base (20) are fixed to the mounting plate (30) via the first fixing component. Two sets of support bases (301) are arranged opposite each other at the top of the two sets of mounting plates (30). The clamping blocks (302) are vertically slidably arranged at the top of the four sets of support bases (301). The transmission mechanism is mounted on the two sets of mounting plates (30) and connects the base (10) and the four sets of clamping blocks (302). The rotation of the mounting base (20) can drive the clamping blocks (302) to slide closer to or away from the support bases (301) via the transmission mechanism, and the sliding directions of the clamping blocks (302) on the two sets of mounting plates (30) are opposite. The feeding mechanism includes a slide plate (40) and a second fixing component. The slide plate (40) is slidably disposed on the top of the base (10). The second fixing component is disposed on the slide plate (40) and can clamp or unclamp the mounting plate (30). While clamping or unclamping the mounting plate (30), the first fixing component can release or restore the fixing of the mounting plate (30) to the mounting plate (30).

2. The bridge shell milling and drilling fixture according to claim 1, characterized in that, The transmission mechanism includes a first screw (303), a linkage component, and a first transmission component; the first screw (303) is vertically and rotatably mounted on each of the four sets of support seats (301), and the top ends of the four sets of first screws (303) are threadedly connected to the four sets of clamping blocks (302) respectively. The linkage component is provided on each of the two sets of mounting plates (30) for driving the two sets of first screws (303) to rotate synchronously. The first transmission component is connected to one of the first screws (303) on the two sets of mounting plates (30) and the base (10) respectively, for driving the two sets of first screws (303) to rotate when the mounting seat (20) rotates, and the rotation directions are opposite.

3. The bridge shell milling and drilling fixture according to claim 2, characterized in that, The linkage assembly includes a first drive shaft (304), a first bevel gear (305), and a second bevel gear (306). The first drive shaft (304) is rotatably mounted on the mounting plate (30). Both ends of the first drive shaft (304) are provided with the first bevel gear (305). The bottom ends of the two sets of first screws (303) are coaxially provided with the second bevel gear (306). The two sets of second bevel gears (306) mesh with the two sets of first bevel gears (305) respectively.

4. The bridge shell milling and drilling fixture according to claim 2, characterized in that, The first transmission assembly includes two sets of first gears (307), an internal gear ring (308), and an external gear ring (309); the two sets of first gears (307) are coaxially connected to one of the first screws (303) on the two sets of mounting plates (30), and the base (10) is provided with the internal gear ring (308) and the external gear ring (309) coaxial with the rotating shaft of the mounting seat (20). Both sets of first gears (307) can mesh with the internal gear ring (308) and the external gear ring (309), and when one set of first gears (307) meshes with the internal gear ring (308), the other set of first gears (307) meshes with the external gear ring (309).

5. The bridge shell milling and drilling fixture according to claim 1, characterized in that, The first fixing component includes a fixing rod (50) and a spring (501); both sides of the mounting plate (30) are provided with mounting grooves (502), and both sets of mounting grooves (502) are provided with fixing rods (50) that slide along the width direction of the mounting plate (30). On the opposite sides of the two sets of fixing rods (50), multiple sets of springs (501) are provided that abut against the sidewall of the mounting groove (502). On the opposite sides of the two sets of fixing rods (50), there are locking blocks (503) and pressing blocks (504). The mounting base (20) is provided with slots (201) at both ends. Both sides of the slots (201) are provided with slots (202). One end of the mounting plate (30) can pass through the slot (201), and the two sets of locking blocks (503) pass through the two sets of slots (202).

6. The bridge shell milling and drilling fixture according to claim 5, characterized in that, The second fixing component includes a first clamping plate (60) and a driving component; both sides of the slide plate (40) are provided with relief grooves (601), and the first clamping plate (60) is rotatably disposed in both sets of relief grooves (601). The driving component is disposed on the slide plate (40) and connected to the two sets of first clamping plates (60), and is used to drive the two sets of first clamping plates (60) to close or open and rotate. When the two sets of first clamping plates (60) close and rotate, they can clamp the mounting plate (30) and press the two sets of pressure blocks (504) so ​​that the two sets of locking blocks (503) exit the two sets of locking slots (202). When the two sets of first clamping plates (60) open and rotate, they can retract into the two sets of relief grooves (601).

7. The bridge shell milling and drilling fixture according to claim 6, characterized in that, The drive assembly includes a worm gear (602), a second drive shaft (603), and a worm (604); the worm gear (602) is coaxially arranged at the pivot of both sets of the first clamping plates (60), the second drive shaft (603) is rotatably arranged at one end of the slide plate (40), and the worm (604) is arranged at both ends of the second drive shaft (603). The helices of the two sets of worms (604) are opposite, and the two sets of worms (604) mesh with the two sets of worm gears (602) respectively.

8. The bridge shell milling and drilling fixture according to claim 1, characterized in that, The feeding mechanism also includes a second screw (401) and a first motor (402); the top of the base (10) is provided with a guide groove (101), the bottom of the slide plate (40) is provided with a guide block (403), the guide block (403) is slidably disposed in the guide groove (101), the second screw (401) is rotatably disposed in the guide groove (101) and threadedly connected to the guide block (403), the first motor (402) is disposed in the guide groove (101), and its output end is coaxially connected to the second screw (401).

9. The bridge shell milling and drilling fixture according to claim 1, characterized in that, It also includes a second clamping mechanism. Both sets of mounting plates (30) are provided with the second clamping mechanism. The second clamping mechanism includes a second clamping plate (70) and a second transmission assembly. The top of the opposite side of both sets of support seats (301) is slidably provided with the second clamping plate (70). The second transmission assembly connects the two sets of clamping blocks (302) and the two sets of second clamping plates (70) and is used to drive the two sets of second clamping plates (70) to move relatively closer or further away when the two sets of clamping blocks (302) move closer or further away from the support seat (301).

10. A bridge shell milling and drilling fixture according to claim 9, characterized in that, The second transmission assembly includes a third screw (701), a second gear (702), and a rack (703); the third screw (701) is rotatably mounted on both sets of the support bases (301), the helixes of the two sets of the third screw (701) are opposite, and they are threadedly connected to the two sets of the second clamping plates (70) respectively. The second gear (702) is coaxially mounted on both sets of the third screw (701), and the rack (703) is mounted on both sets of the clamping blocks (302). The racks (703) of the two sets are respectively meshed with the two sets of the second gears (702).

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