Automatic drilling equipment and method for machining transmission shaft of large agricultural machine

Abstract

The invention discloses automatic drilling equipment and method for large agricultural machine transmission shaft machining, the automatic drilling equipment comprises an equipment base, the top of the equipment base is sequentially provided with a turnover mechanism, a drilling assembly and a supporting and limiting assembly from left to right, and the turnover mechanism comprises the turnover assembly which comprises an equipment box installed on the left side of the top of the equipment base; and one side of the equipment box is fixedly connected with an infrared transmitter. The invention relates to the technical field of agricultural machinery processing equipment. According to the automatic drilling equipment and method for machining the transmission shaft of the large agricultural machine, the overturning mechanism is arranged, the driving assembly drives the rotating gear to rotate intermittently, the driving gear and the rotating gear are in meshing transmission, and 12 sets of through holes evenly formed in the rotating gear are matched, so that the single-time 30-degree accurate overturning adjustment of the transmission shaft can be achieved; and then the overturning plate and the transmission shaft are driven to rotate synchronously, automatic overturning of the transmission shaft is achieved, manual overturning is not needed, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery processing equipment technology, specifically to automated drilling equipment and methods for processing transmission shafts of large agricultural machinery. Background Technology

[0002] The drive shaft of large agricultural machinery is the core transmission component of agricultural machinery. Its main function is to transmit power, connect the engine and working parts of agricultural machinery, and ensure the stable operation of agricultural machinery (such as tractors, combine harvesters, etc.).

[0003] The reference patent title is: Drilling Device for Drive Shaft (Authorization Announcement No.: CN221064527U, Authorization Announcement Date: 2024.06.04), which includes a support frame and two drilling mechanisms disposed inside the support frame. A sliding seat is movably mounted on the top of the support frame via a first linear drive component. The two drilling mechanisms are symmetrically arranged on both sides of the bottom end of the sliding seat. An adjustment mechanism for adjusting the distance between the two drilling mechanisms is provided inside the sliding seat. A placement seat for placing a rotating shaft is provided directly below the sliding seat. A positioning mechanism for pressing the rotating shaft against the top of the placement seat is provided on the opposite side of each of the two drilling mechanisms. Drilling can be performed simultaneously on both ends of rotating shafts of different lengths as needed, reducing equipment investment while improving work efficiency.

[0004] Based on the above-mentioned documents: During the processing of the drive shaft, multiple mounting holes need to be drilled on its surface or end for subsequent assembly and connection. The accuracy and efficiency of drilling directly affect the assembly quality and performance of the drive shaft. Most existing drilling equipment does not have an automatic flipping mechanism. After a single drilling operation on the fixed drive shaft, it is necessary to disassemble and fix it again, which seriously affects work efficiency. A few devices with flipping functions also have problems such as inflexible rotation adjustment and difficulty in accurately controlling the flipping angle. They cannot achieve automated and precise flipping drilling on different sides of the drive shaft, which can easily lead to drilling position deviation. Therefore, this invention provides an automated drilling equipment and method for processing drive shafts of large agricultural machinery. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automated drilling device and method for processing transmission shafts of large agricultural machinery. It solves the problems that existing drilling devices generally lack an automatic flipping structure, making it impossible to quickly drill multiple sides of the transmission shaft, thus affecting work efficiency, and that a few drilling devices with flipping structures suffer from inflexible rotation adjustment and difficulty in accurately controlling the flipping angle.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automated drilling device for processing transmission shafts of large agricultural machinery, comprising a device base, wherein the top of the device base is provided with a tilting mechanism, a drilling assembly, and a support and limiting assembly arranged sequentially from left to right; the tilting mechanism includes: The flip assembly includes a device housing mounted on the top left side of the device base. An infrared transmitter is fixedly connected to one side of the device housing. An infrared receiver is disposed on the inner wall of the device housing, corresponding to the transmitting end of the infrared transmitter. A rotating shaft is rotatably connected to the inner wall of the device housing. A rotating gear is fixedly connected to the surface of the rotating shaft. Multiple sets of through holes are opened on the surface of the rotating gear. One end of the rotating shaft extends through to the outside of the device housing and is fixedly connected to a flip plate. A placement groove is opened on one side of the flip plate. A placement plate is fixedly connected to the inner wall of the placement groove. The drive assembly, located on one side of the equipment box, is used to drive the rotating gear to rotate, thereby causing the tilting plate to rotate synchronously; The positioning component, located inside the flip plate, is used to position the mechanical drive shaft placed on the plate.

[0007] Preferably, the drive assembly includes a drive motor mounted on one side of the equipment housing, one end of the output shaft of the drive motor extending into the interior of the equipment housing and fixedly connected to a drive gear, the surface of the drive gear meshing with the surface of the rotating gear.

[0008] Preferably, the positioning assembly includes a positioning screw threaded inside the flip plate, a control block fixedly connected to the top end of the positioning screw, a positioning plate rotatably connected to the bottom end of the positioning screw, a symmetrical positioning rod fixedly connected to the top of the positioning plate, and the surface of the positioning rod slidingly connected to the interior of the flip plate.

[0009] Preferably, the support and limiting assembly includes a connecting plate slidably mounted on the top right side of the equipment base and a control motor fixedly mounted on the right side of the equipment base. A support plate is fixedly connected to one side of the connecting plate, a limiting baffle is installed at the top of the connecting plate, and a connecting block is fixedly connected to the bottom of the connecting plate. A control screw is fixedly connected to one end of the output shaft of the control motor, and one end of the control screw is rotatably connected to the inner wall of the equipment base. The surface of the control screw is threadedly connected to the inside of the connecting block.

[0010] Preferably, both the support plate and the placement plate have V-shaped grooves on their tops, and the horizontal heights of the V-shaped groove openings are the same.

[0011] Preferably, the drilling assembly includes an electric slide symmetrically mounted on the top of the equipment base. A support plate is fixedly connected to the sliding seat of the electric slide. A lifting cylinder is fixedly connected to the top of the support plate. A lifting plate is fixedly connected to the output end of the lifting cylinder. An electric drilling device for drilling holes in the drive shaft is fixedly connected to the bottom of the lifting plate.

[0012] Preferably, guide grooves are provided on both sides of the bearing plate, and guide blocks are fixedly connected to both ends of the lifting plate, with the surface of the guide blocks slidably connected to the inner surface of the guide grooves.

[0013] This invention also discloses an automated drilling method for machining drive shafts of large agricultural machinery, specifically including the following steps: S1. Adjusting the support limit assembly: Based on the length of the transmission shaft to be processed, start the control motor, which drives the control screw to rotate. The connecting block drives the connecting plate to slide along the slide groove on the top of the equipment base. Adjust the distance between the support plate and the flip plate to match the length of the transmission shaft. After adjustment, turn off the control motor. S2. Place and position the drive shaft: Place the large agricultural machinery drive shaft to be processed in the V-groove of the placement plate and support plate. One end of the drive shaft is in contact with the limiting baffle to achieve axial limiting. Then, rotate the control block to drive the positioning screw to rotate. The positioning screw drives the positioning plate to move downward until the anti-slip rubber pad at the bottom of the positioning plate is in close contact with the surface of the drive shaft to achieve positioning and fixing of the drive shaft. S3. Adjust the drilling position: According to the drilling requirements of the drive shaft, start the electric slide table. The electric slide table drives the bearing plate, lifting cylinder, lifting plate and electric drilling device to move along the length of the equipment base. Adjust the electric drilling device to the specified drilling position. After the adjustment is completed, turn off the electric slide table. S4. Drilling: Start the electric drilling device and lifting cylinder. The lifting cylinder drives the lifting plate and electric drilling device to move downward. The drill bit of the electric drilling device rotates at high speed to drill the drive shaft. After drilling is completed, the lifting cylinder drives the electric drilling device to reset upward. Then, the electric drilling device and lifting cylinder are turned off. S5. Flipping the drive shaft: When drilling is required on the other side of the drive shaft, start the drive motor. The drive motor drives the drive gear to rotate. The drive gear meshes with the rotating gear, driving the rotating shaft and the flipping plate to rotate. The flipping plate drives the drive shaft to rotate synchronously. When the through hole on the rotating gear rotates between the infrared transmitter and the infrared receiver, the infrared receiver receives the infrared rays emitted by the infrared transmitter and sends a signal to the controller. The controller controls the drive motor to stop working. There are 12 sets of through holes. A single rotation can achieve a precise adjustment of the drive shaft rotation angle of 30°. By using the pre-set secondary drilling position, the drive shaft can be flipped quickly. Then, repeat steps S3-S4 to drill the other side of the drive shaft. S6. Material Removal: After all drilling is completed, rotate the control block in the opposite direction to move the positioning plate upward, release the positioning of the drive shaft, and then remove the completed drive shaft from the placement plate and support plate to complete the entire drilling process.

[0014] Beneficial effects This invention provides an automated drilling device and method for machining drive shafts of large agricultural machinery. Compared with the prior art, it has the following advantages: 1. This automated drilling equipment and method for processing large agricultural machinery drive shafts is equipped with a flipping mechanism. The drive assembly drives the rotating gear to rotate intermittently. The drive gear meshes with the rotating gear, and with 12 sets of through holes evenly spaced on the rotating gear, the drive shaft can be precisely flipped 30° at a time. This, in turn, drives the flipping plate and the drive shaft to rotate synchronously, achieving automated flipping of the drive shaft. This eliminates the need for manual flipping, reducing labor intensity. At the same time, the infrared transmitter and receiver work in conjunction with the through holes on the rotating gear to precisely control the flipping angle, ensuring the accuracy of the drilling position. This solves the problems of inconvenient flipping and inaccurate angle control in existing equipment.

[0015] 2. The automated drilling equipment and method for processing large agricultural machinery drive shafts are equipped with a support and limiting component. By controlling the motor and the lead screw, the connecting plate is driven to slide, and the position of the support plate is adjusted to adapt to drive shafts of different lengths. The V-groove on the support plate cooperates with the V-groove on the placement plate to achieve stable support for the drive shaft. The limiting baffle plays an axial limiting role to prevent the drive shaft from moving and further ensure drilling accuracy.

[0016] 3. The automated drilling equipment and method for processing large agricultural machinery drive shafts has a reasonable overall structure design, coordinated components, high degree of automation, precise positioning, flexible rotation, and strong versatility. It can effectively improve the efficiency and accuracy of drilling large agricultural machinery drive shafts, reduce manual labor intensity and product scrap rate, and meet the needs of large-scale production. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the external structure of the present invention; Figure 2 This is a three-dimensional schematic diagram of the positioning component of the present invention; Figure 3 This is a three-dimensional schematic diagram of the flipping component of the present invention; Figure 4 This is a three-dimensional schematic diagram of the surface structure of the equipment box of the present invention; Figure 5 This is a three-dimensional schematic diagram of the positioning component of the present invention; Figure 6 This is a three-dimensional schematic diagram of the support and limiting component of the present invention.

[0018] In the diagram: 1-Equipment base, 2-Flipping mechanism, 21-Flipping assembly, 211-Equipment box, 212-Infrared transmitter, 213-Infrared receiver, 214-Rotating shaft, 215-Rotating gear, 216-Through hole, 217-Flipping plate, 218-Placement slot, 219-Placement plate, 22-Drive assembly, 221-Drive motor, 222-Drive gear, 23-Positioning assembly, 231-Positioning screw, 232-Control block, 233-Positioning plate, 234-Positioning rod, 3-Drilling assembly, 31-Electric slide, 32-Bearing plate, 33-Lifting cylinder, 34-Lifting plate, 35-Electric drilling device, 4-Support and limit assembly, 41-Connecting plate, 42-Control motor, 43-Supporting plate, 44-Limit baffle, 45-Connecting block, 46-Control screw, 5-Guide groove, 6-Guide block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-6 The present invention provides a technical solution: An automated drilling device for processing drive shafts of large agricultural machinery includes a base 1. From left to right, the top of the base 1 is provided with a tilting mechanism 2, a drilling assembly 3, and a support and limiting assembly 4. The tilting mechanism 2 includes: The flip assembly 21 includes a device box 211 installed on the top left side of the device base 1. An infrared transmitter 212 is fixedly connected to one side of the device box 211. An infrared receiver 213 is provided on the inner wall of the device box 211 and corresponding to the transmitting end of the infrared transmitter 212. A rotating shaft 214 is rotatably connected to the inner wall of the device box 211. A rotating gear 215 is fixedly connected to the surface of the rotating shaft 214. Multiple sets of through holes 216 are opened on the surface of the rotating gear 215. One end of the rotating shaft 214 extends through to the outside of the device box 211 and is fixedly connected to a flip plate 217. A placement groove 218 is opened on one side of the flip plate 217. A placement plate 219 is fixedly connected to the inner wall of the placement groove 218. The drive assembly 22 is located on one side of the equipment box 211 and is used to drive the rotating gear 215 to rotate, thereby driving the flip plate 217 to rotate synchronously. The positioning component 23 is disposed inside the flip plate 217 and is used to position the mechanical transmission shaft placed on the placement plate 219.

[0021] A flipping mechanism 2 is provided, which drives the rotating gear 215 to rotate intermittently via the drive component 22. The drive gear 222 meshes with the rotating gear 215 for transmission. With the help of 12 sets of through holes 216 evenly opened on the rotating gear 215, the transmission shaft can be precisely flipped 30° at a time. This drives the flipping plate 217 and the transmission shaft to rotate synchronously, realizing the automatic flipping of the transmission shaft without manual flipping, reducing the intensity of manual labor. At the same time, the infrared transmitter 212 and the infrared receiver 213 cooperate with the through holes 216 on the rotating gear 215 to accurately control the flipping angle, ensuring the accuracy of the drilling position. This solves the problems of inconvenient flipping and inaccurate angle control in existing equipment.

[0022] The bottom of the equipment base 1 is equipped with four sets of self-locking casters, which facilitates the overall movement of the equipment. A control box is installed on the inner wall of the equipment base 1. The control box contains a power module and a control module. The power module provides stable power to all electrical components of the entire equipment. The control module is electrically connected to various electrical components in the flipping mechanism 2, drilling assembly 3, and support and limit assembly 4 to realize automated and coordinated control of the equipment. There are 12 sets of through holes, and the included angle between the centers of adjacent through holes is 30°. The aperture of the through hole 12 in this attachment is adapted to the infrared transmitter 212 and the infrared receiver 213. The infrared transmitter 212 is model E3F-DS30C4, and its transmitting end extends into the interior of the equipment box 211. The infrared receiver 213 is a matching receiver of E3F-DS30C4, with adjustable receiving sensitivity. It is electrically connected to the infrared transmitter 212, and the center lines of both are on the same straight line. Both the infrared transmitter 212 and the infrared receiver 213 are connected to the control box through a shielded box. Reference Appendix Figure 1 It can be seen that a drain outlet is provided at the center of the top of the equipment base 1 to facilitate the collection of coolant and dust. A removable baffle is installed between the drain outlet and the electric slide to prevent coolant and dust from splashing. In this embodiment, the drive assembly 22 includes a drive motor 221 installed on one side of the equipment housing 211. One end of the output shaft of the drive motor 221 extends into the interior of the equipment housing 211 and is fixedly connected to a drive gear 222. The surface of the drive gear 222 meshes with the surface of the rotating gear 215.

[0023] The drive motor 22 is a servo motor with an encoder installed at its tail to monitor the speed and rotation angle of the drive motor 221 in real time and feed the signal back to the control module to achieve closed-loop control. The drive gear 222 has 15 teeth and the rotating gear 215 has 60 teeth. The tooth ratio between the two is 15:60, which can realize the intermittent rotation of the rotating gear 215 and at the same time play the role of speed reduction and torque increase. In this embodiment, the positioning component 23 includes a positioning screw 231 threadedly connected inside the flip plate 217. A control block 232 is fixedly connected to the top end of the positioning screw 231, and a positioning plate 233 is rotatably connected to the bottom end of the positioning screw 231. A symmetrical positioning rod 234 is fixedly connected to the top of the positioning plate 233, and the surface of the positioning rod 234 is slidably connected to the interior of the flip plate 217.

[0024] The bottom of the positioning plate 233 is glued with an anti-slip rubber pad; The positioning rod 234 is used to limit the vertical sliding of the positioning plate 233; In this embodiment, the support limiting component 4 includes a connecting plate 41 slidably mounted on the top right side of the equipment base 1 and a control motor 42 fixedly mounted on the right side of the equipment base 1. A support plate 43 is fixedly connected to one side of the connecting plate 41, a limiting baffle 44 is installed at the top of the connecting plate 41, and a connecting block 45 is fixedly connected to the bottom of the connecting plate 41. A control screw 46 is fixedly connected to one end of the output shaft of the control motor 42. One end of the control screw 46 is rotatably connected to the inner wall of the equipment base 1, and the surface of the control screw 46 is threadedly connected to the inside of the connecting block 45.

[0025] The control motor 42 is a servo motor, and an encoder is also installed at the tail. A buffer pad is attached to one side of the limiting baffle 44. The buffer pad is made of polyurethane. A sliding groove for sliding the connecting block 45 is provided on the right side of the top of the equipment base 1. A dustproof strip can be provided at the mating point between the sliding groove and the connecting block. In this embodiment, both the support plate 43 and the placement plate 219 have V-shaped grooves on their tops, and the horizontal height of the V-shaped groove openings of the two are the same.

[0026] The inner wall of the V-groove is bonded with an anti-slip and wear-resistant pad; In this embodiment, the drilling assembly 3 includes an electric slide 31 symmetrically mounted on the top of the equipment base 1. A support plate 32 is fixedly connected to the sliding seat of the electric slide 31. A lifting cylinder 33 is fixedly connected to the top of the support plate 32. A lifting plate 34 is fixedly connected to the output end of the lifting cylinder 33. An electric drilling device 35 for drilling the drive shaft is fixedly connected to the bottom of the lifting plate 34.

[0027] The electric slide 31 is a linear electric slide, and the electric slide 31 is driven by a stepper motor. The lifting cylinder 33 adopts a standard cylinder; The electric drilling device 35 includes a drilling motor and a drill bit, wherein the drilling motor is a high-speed asynchronous motor; An adjustable cooling nozzle is installed on the support plate 32 and on one side of the drill bit. The cooling nozzle sprays cutting fluid onto the drill bit and the drilling position of the drive shaft to cool, lubricate and remove chips. The cooling nozzle is connected to an external water pump through a hose. In this embodiment, guide grooves 5 are provided on both sides of the bearing plate 32, and guide blocks 6 are fixedly connected to both ends of the lifting plate 34. The surface of the guide block 6 is slidably connected to the inner surface of the guide groove 5.

[0028] The lifting plate 34 can be guided and limited up and down by the guide groove 5 and the guide block 6; This invention also discloses an automated drilling method for machining drive shafts of large agricultural machinery, specifically including the following steps: S1. Adjusting the support limit assembly: According to the length of the transmission shaft to be processed, start the control motor 42. The control motor 42 drives the control screw 46 to rotate. The connecting block 45 drives the connecting plate 41 to slide along the slide groove at the top of the equipment base 1. Adjust the distance between the support plate 43 and the flip plate 217 to match the length of the transmission shaft. After the adjustment is completed, turn off the control motor 42. S2. Place and position the drive shaft: Place the large agricultural machinery drive shaft to be processed in the V-groove of the placement plate 219 and the support plate 43. One end of the drive shaft is in contact with the limiting baffle 44 to achieve axial limiting. Then, rotate the control block 232 to drive the positioning screw 231 to rotate. The positioning screw 231 drives the positioning plate 233 to move downward until the anti-slip rubber pad at the bottom of the positioning plate 233 is in close contact with the surface of the drive shaft to achieve positioning and fixing of the drive shaft. S3. Adjust the drilling position: According to the drilling requirements of the drive shaft, start the electric slide table 31. The electric slide table 31 drives the bearing plate 32, lifting cylinder 33, lifting plate 34 and electric drilling device 35 to move along the length of the equipment base 1. Adjust the electric drilling device 35 to the specified drilling position. After the adjustment is completed, turn off the electric slide table 31. S4. Drilling: Start the electric drilling device 35 and the lifting cylinder 33. The lifting cylinder 33 drives the lifting plate 34 and the electric drilling device 35 to move downward. The drill bit of the electric drilling device 35 rotates at high speed to drill the drive shaft. After drilling is completed, the lifting cylinder 33 drives the electric drilling device 35 to reset upward. Then, the electric drilling device 35 and the lifting cylinder 33 are turned off. S5. Flipping the drive shaft: When drilling is required on the other side of the drive shaft, start the drive motor 221. The drive motor 221 drives the drive gear 222 to rotate. The drive gear 222 meshes with the rotating gear 215, driving the rotating shaft 214 and the flipping plate 217 to rotate. The flipping plate 217 drives the drive shaft to rotate synchronously. When the through hole 216 on the rotating gear 215 rotates between the infrared transmitter 212 and the infrared receiver 213, the infrared receiver 213 receives the infrared rays emitted by the infrared transmitter 212 and sends a signal to the controller. The controller controls the drive motor 221 to stop working. There are 12 sets of through holes 216. A single rotation can achieve a precise adjustment of the drive shaft rotation angle of 30°. By using the pre-set secondary drilling position, the drive shaft can be flipped quickly. Then, repeat steps S3-S4 to drill the other side of the drive shaft. S6. Material Removal: After all drilling is completed, rotate the control block 232 in the reverse direction to move the positioning plate 233 upward, release the positioning of the drive shaft, and then remove the completed drive shaft from the placement plate 219 and support plate 43 to complete the entire drilling process.

[0029] A support limiting component 4 is provided. By controlling the motor 42 and the lead screw 46, the connecting plate 41 is driven to slide, and the position of the support plate 43 is adjusted to adapt to the transmission shaft of different lengths. The V-groove on the support plate 43 cooperates with the V-groove on the placement plate 219 to achieve stable support for the transmission shaft. The limiting baffle 44 plays an axial limiting role to prevent the transmission shaft from moving and further ensure drilling accuracy.

[0030] With a reasonable overall structural design, coordinated components, high degree of automation, precise positioning, flexible rotation, and strong versatility, it can effectively improve the efficiency and accuracy of drilling and machining the drive shafts of large agricultural machinery, reduce manual labor intensity and product scrap rate, and meet the needs of large-scale production.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated drilling device for processing transmission shafts of large agricultural machinery, comprising a device base (1), characterized in that: The top of the equipment base (1) is provided with a flipping mechanism (2), a drilling assembly (3), and a support limiting assembly (4) from left to right. The flipping mechanism (2) includes: The flip assembly (21) includes a device box (211) installed on the top left side of the device base (1). An infrared transmitter (212) is fixedly connected to one side of the device box (211). An infrared receiver (213) is provided on the inner wall of the device box (211) and corresponding to the transmitting end of the infrared transmitter (212). A rotating shaft (214) is rotatably connected to the inner wall of the device box (211). A rotating gear (215) is fixedly connected to the surface of the rotating shaft (214). Multiple through holes (216) are opened on the surface of the rotating gear (215). One end of the rotating shaft (214) extends through to the outside of the device box (211) and is fixedly connected to a flip plate (217). A placement groove (218) is opened on one side of the flip plate (217). A placement plate (219) is fixedly connected to the inner wall of the placement groove (218). The drive assembly (22) is located on one side of the equipment box (211) and is used to drive the rotating gear (215) to rotate, thereby driving the flip plate (217) to rotate synchronously; The positioning component (23) is located inside the flip plate (217) and is used to position the mechanical drive shaft placed on the placement plate (219).

2. The automated drilling equipment for processing large agricultural machinery drive shafts according to claim 1, characterized in that: The drive assembly (22) includes a drive motor (221) mounted on one side of the equipment housing (211). One end of the output shaft of the drive motor (221) extends into the interior of the equipment housing (211) and is fixedly connected to a drive gear (222). The surface of the drive gear (222) meshes with the surface of the rotating gear (215).

3. The automated drilling equipment for processing large agricultural machinery drive shafts according to claim 1, characterized in that: The positioning assembly (23) includes a positioning screw (231) threaded inside the flip plate (217). A control block (232) is fixedly connected to the top end of the positioning screw (231), and a positioning plate (233) is rotatably connected to the bottom end of the positioning screw (231). A symmetrical positioning rod (234) is fixedly connected to the top of the positioning plate (233), and the surface of the positioning rod (234) is slidably connected to the inside of the flip plate (217).

4. The automated drilling equipment for processing large agricultural machinery drive shafts according to claim 1, characterized in that: The support limiting assembly (4) includes a connecting plate (41) slidably installed on the top right side of the equipment base (1) and a control motor (42) fixedly installed on the right side of the equipment base (1). A support plate (43) is fixedly connected to one side of the connecting plate (41). A limiting baffle (44) is installed on the top of the connecting plate (41). A connecting block (45) is fixedly connected to the bottom of the connecting plate (41). A control screw (46) is fixedly connected to one end of the output shaft of the control motor (42). One end of the control screw (46) is rotatably connected to the inner wall of the equipment base (1). The surface of the control screw (46) is threadedly connected to the inside of the connecting block (45).

5. The automated drilling equipment for processing large agricultural machinery drive shafts according to claim 4, characterized in that: The top of both the support plate (43) and the placement plate (219) is provided with a V-shaped groove, and the horizontal height of the V-shaped groove openings of both are the same.

6. The automated drilling equipment for processing large agricultural machinery drive shafts according to claim 1, characterized in that: The drilling assembly (3) includes an electric slide (31) symmetrically mounted on the top of the equipment base (1). A bearing plate (32) is fixedly connected to the sliding seat of the electric slide (31). A lifting cylinder (33) is fixedly connected to the top of the bearing plate (32). A lifting plate (34) is fixedly connected to the output end of the lifting cylinder (33). An electric drilling device (35) for drilling the drive shaft is fixedly connected to the bottom of the lifting plate (34).

7. The automated drilling equipment for processing large agricultural machinery drive shafts according to claim 6, characterized in that: The support plate (32) has guide grooves (5) on both sides, and guide blocks (6) are fixedly connected to both ends of the lifting plate (34). The surface of the guide block (6) is slidably connected to the inner surface of the guide groove (5).

8. An automated drilling method for machining drive shafts of large agricultural machinery, comprising the automated drilling equipment for machining drive shafts of large agricultural machinery as described in any one of claims 1-7, characterized in that: Specifically, the following steps are included: S1. Adjust the support limit assembly: According to the length of the transmission shaft to be processed, start the control motor (42), the control motor (42) drives the control screw (46) to rotate, the connecting block (45) drives the connecting plate (41) to slide along the slide groove on the top of the equipment base (1), adjust the distance between the support plate (43) and the flip plate (217) to match the length of the transmission shaft, and after the adjustment is completed, turn off the control motor (42). S2. Place and position the drive shaft: Place the large agricultural machinery drive shaft to be processed in the V-groove of the placement plate (219) and the support plate (43). One end of the drive shaft is in contact with the limiting baffle (44) to achieve axial limiting. Then, rotate the control block (232) to drive the positioning screw (231) to rotate. The positioning screw (231) drives the positioning plate (233) to move downward until the anti-slip rubber pad at the bottom of the positioning plate (233) is in close contact with the surface of the drive shaft to achieve the positioning and fixing of the drive shaft. S3. Adjust the drilling position: According to the drilling requirements of the drive shaft, start the electric slide (31). The electric slide (31) drives the bearing plate (32), lifting cylinder (33), lifting plate (34) and electric drilling device (35) to move along the length of the equipment base (1). Adjust the electric drilling device (35) to the specified drilling position. After the adjustment is completed, turn off the electric slide (31). S4. Drilling: Start the electric drilling device (35) and the lifting cylinder (33). The lifting cylinder (33) drives the lifting plate (34) and the electric drilling device (35) to move downward. The drill bit of the electric drilling device (35) rotates at high speed to drill the drive shaft. After drilling is completed, the lifting cylinder (33) drives the electric drilling device (35) to reset upward. Then, the electric drilling device (35) and the lifting cylinder (33) are turned off. S5. Flipping the drive shaft: When drilling is required on the other side of the drive shaft, start the drive motor (221). The drive motor (221) drives the drive gear (222) to rotate. The drive gear (222) meshes with the rotating gear (215) to drive the rotating shaft (214) and the flipping plate (217) to rotate. The flipping plate (217) drives the drive shaft to rotate synchronously. When the through hole (216) on the rotating gear (215) rotates between the infrared transmitter (212) and the infrared receiver (213), the infrared receiver (213) receives the infrared rays emitted by the infrared transmitter (212) and sends a signal to the controller. The controller controls the drive motor (221) to stop working. There are 12 sets of through holes (216). A single rotation can achieve a precise adjustment of the 30° rotation angle of the drive shaft. By pre-setting the secondary drilling position, the drive shaft can be flipped quickly. Then, repeat steps S3-S4 to drill the other side of the drive shaft. S6. Material Removal: After all drilling is completed, rotate the control block (232) in the opposite direction to move the positioning plate (233) upward, release the positioning of the drive shaft, and then remove the completed drive shaft from the placement plate (219) and support plate (43) to complete the entire drilling process.

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