Device and method for machining shielding hole through radial drilling machine

Abstract

The device comprises a shell with the L-shaped section, the vertical part of the shell is a hollow cylinder, and the inner circle of a step on the upper portion of the cylinder is called as a matching hole; a fixed bottom plate is arranged on the portion, close to the lower portion, of the cylinder, an axis hole is formed in the fixed bottom plate, and a thin shaft of the taper shank shaft penetrates through the axis hole downwards to be provided with a driving gear. The horizontal part of the shell is named as a cantilever, 2-4 mounting holes are formed in the cantilever side by side, a drill bushing shaft is arranged in the outer mounting hole, a drilling gear is mounted at the upper end of the drill bushing shaft, and an inner hole named as a tool taper shank hole is formed in the lower end of the drill bushing shaft; fixing shafts are mounted in other mounting holes, and transition gears are mounted at the lower ends of the fixing shafts through bearings; the driving gear, the transition gear and the drilling gear are sequentially aligned and meshed in the radial direction. The invention further discloses a method for machining the shielding hole through the radial drilling machine. The invention belongs to the technical field of mechanical equipment manufacturing, and is simple to operate and high in processing accuracy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical equipment manufacturing, and relates to a device for processing a blocked hole by using a radial drilling machine, and also relates to a method for processing a blocked hole by using a radial drilling machine. BACKGROUND

[0002] The radial drilling machine is one of the commonly used equipment in mechanical processing, and has the characteristics of convenient clamping and high efficiency, thus playing an important role in the drilling processing of mechanical processing. Compared with boring machines, milling machines and other machine tools, the radial drilling machine also has the characteristics of low equipment purchase cost and low maintenance cost.

[0003] However, the radial drilling machine can only process the holes on the parts without blocking, and can only process the blocked holes on the boring machines and milling machines provided with angle milling heads. Since the boring machines and milling machines have complex operation and high purchase cost, the processing cost of the parts is increased.

[0004] Therefore, finding a method and device for processing a blocked hole by using a radial drilling machine to reduce the processing cost of the parts with blocked holes has become a technical difficulty in the mechanical manufacturing industry. SUMMARY

[0005] The present application aims to provide a device for processing a blocked hole by using a radial drilling machine to solve the problems of complex operation and low accuracy in the prior art without special processing equipment.

[0006] Another object of the present application is to provide a method for processing a blocked hole by using a radial drilling machine to solve the problems of complex operation and low processing efficiency in the prior art.

[0007] The technical solution adopted by the present application is a device for processing a blocked hole by using a radial drilling machine, which comprises a shell with an L-shaped cross section, The vertical part of the shell is a hollow cylinder, and the inner circle of the step at the upper part of the cylinder is called a matching hole. A fixed bottom plate is arranged near the lower part of the cylinder, the fixed bottom plate is provided with an axis hole, and the thin shaft of the taper handle shaft is downwardly installed with a driving gear through the axis hole; The horizontal part of the shell is called a cantilever, and 2-4 installation holes are arranged side by side in the cantilever. A drill sleeve shaft is arranged in the outer installation hole, the upper end of the drill sleeve shaft is installed with a drilling gear, and the lower end of the drill sleeve shaft is provided with an inner hole called a tool taper handle hole. A fixed shaft is installed in the other installation holes, and the lower end of the fixed shaft is installed with a transition gear through a bearing. The driving gear, the transition gear and the drilling gear are radially aligned and engaged in sequence.

[0008] Another technical solution adopted by the present application is a method for processing a blocked hole by using a radial drilling machine, which utilizes the above-mentioned device for processing a blocked hole by using a radial drilling machine and is implemented according to the following steps: Step 1, assemble the device of the present application on a radial drilling machine; Step 2, install the fixed workpiece, Place and fix the workpiece on the workbench of the radial drilling machine, and when placing and fixing the workpiece, make the drill bit of the processing device meet the operating space of the hole to be processed; Step 3, implement the processing of the hole to be processed, Make the drill bit of the processing device pass through the shielding part to the directly above the hole to be processed; start the radial drilling machine, rotate the main shaft, drive the drill sleeve shaft and the drill bit to rotate through the drilling gear, and feed and complete the processing of the hole to be processed.

[0009] The method and device of the present application have the advantages of simplicity, easy operation, low purchase cost, and low maintenance cost, and can simply and low-costly process the parts with shielding holes. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is the front view schematic diagram of the workpiece with shielding holes which is the structure object of the device of the present application; Figure 2 is the left side view schematic diagram of Figure 1 ; Figure 3 is the front view structure schematic diagram of the device for processing the shielding holes of the present application; Figure 4 is the top view schematic diagram of Figure 3 ; Figure 5 is the right side view schematic diagram of Figure 3 ; Figure 6 is the schematic diagram of the installation position of the workpiece in the processing state of the method of the present application.

[0011] In the figure, 1. workpiece, 2. hole to be processed, 3. shielding part, 4. housing, 5. matching hole, 6. locking hole, 7. wedge-shaped locking assembly, 8. taper shaft, 9. drill sleeve shaft, 10. fixed shaft one, 11. fixed shaft two, 12. driving gear, 13. drilling gear, 14. drill bit, 15. clinch screw, 16. transition gear one, 17. transition gear two, 18. shaft stop ring, 19. hole stop ring, 20. sealing bottom plate, 21. oil cup, 22. sleeve, 23. main shaft, 24. shaft end upper cover plate, 25. reinforcing seat, 26. sealing ring. DETAILED DESCRIPTION

[0012] The present application will be described in detail below in combination with the drawings and specific embodiments.

[0013] Referring to Figure 1 and Figure 2, is the structural schematic diagram of the object (workpiece with shielding hole) processed by the device of the present application. A hole to be processed 2 is designed in the inner recess space of the workpiece 1, and a shielding part 3 is above the hole to be processed 2. The distance between the hole to be processed 2 and the inner side wall of the workpiece 1 is B, the distance between the hole to be processed 2 and the shielding part 3 is H, and the inner wall length of the shielding part 3 is A. Due to the influence of the shielding part 3, the hole to be processed 2 cannot be directly processed by the radial drilling machine, and the drill cannot be directly aligned for drilling. Therefore, the processing can only be completed on the boring machine or milling machine equipped with a special angle milling head. Since the operation of this type of boring machine or milling machine is complex and the purchase cost is high, the processing cost of the part containing the shielding hole is significantly increased. Referring to Figure 3 Fig. 4 and Figure 5 , the structure of the device for processing the workpiece with the shielding hole by the radial drilling machine is that the housing 4 (in the front view) is in the shape of L as a whole, which serves as the mounting and supporting body of other transmission components, The vertical part of the housing 4 is made into a hollow cylinder, and the inner circle of the step at the upper part of the cylinder is called a matching hole 5, which has an inner diameter slightly smaller than that of the main body part at the middle part of the cylinder. The matching hole 5 is matched and centered with the outer circle of the sleeve 22 of the radial drilling machine in a small gap when assembled. A locking hole 6 perpendicular to the axis of the matching hole 5 is arranged on one side of the outer circle surface of the cylinder corresponding to the matching hole 5, and the locking hole 6 is partially penetrated with the matching hole 5 (the two axes do not intersect in space). A wedge-shaped locking assembly 7 is arranged in the locking hole 6, which is used to lock the cylinder and the sleeve 22 of the radial drilling machine when assembled. A fixed bottom plate is arranged near the lower part of the cylinder, which has an axis hole, and the thin shaft of the taper shaft 8 passes through the axis hole downward and is supported and positioned by the bearing. The taper shaft 8 is concentrically arranged with the matching hole 5; See Figure 3 and Figure 4 The horizontal part of the housing 4 is called a cantilever, and mounting hole one, mounting hole two and mounting hole three are arranged side by side in the cantilever. The mounting hole one, the mounting hole two and the mounting hole three are all vertically penetrated. The fixed shaft one 10 is installed in the mounting hole one, the fixed shaft two 11 is installed in the mounting hole two, and the fixed shaft one 10 and the fixed shaft two 11 are fixed. The drill sleeve shaft 9 is arranged in the mounting hole three; The lower end of the taper shank shaft 8 is provided with a driving gear 12 after passing through the shaft hole of the bottom plate, the driving gear 12 is positioned with the thin shaft of the taper shank shaft 8 by a key and is fixed by a nut at the lower end, so as to realize integral rotation; the lower end of the fixed shaft one 10 is provided with a transition gear one 16 through a bearing, the lower end of the fixed shaft two 11 is provided with a transition gear two 17 through a bearing, the fixed shaft one 10 and the fixed shaft two 11 are fixed, the transition gear one 16 and the transition gear two 17 are freely rotatable; the upper end of the drill sleeve shaft 9 is provided with a drilling gear 13, the drilling gear 13 is positioned with the drill sleeve shaft 9 by a key and is fixed by a bolt at the upper end of the drill sleeve shaft 9, the lower end of the drill sleeve shaft 9 is provided with an inner hole, which is called a tool taper shank hole, the tool taper shank hole is provided with a drill bit 14 for machining the to-be-machined hole 2; the driving gear 12, the transition gear one 16, the transition gear two 17 and the drilling gear 13 are sequentially meshed and transmission connected; At least one fixed shaft (two fixed shafts, i.e. the fixed shaft one 10 and the fixed shaft two 11, are provided in the embodiment) is arranged between the taper shank shaft 8 and the drill sleeve shaft 9 according to needs, the taper shank specification of the taper shank shaft 8 is consistent with the taper hole specification of the main shaft of the radial drill press, the taper shank shaft 8 and the drill sleeve shaft 9 are freely rotatable through respective supporting bearings; The fixed shaft one 10 and the fixed shaft two 11 are positioned through holes and are fixed in respective mounting holes of the cantilever by means of clinch screws 15; in order to facilitate machining and assembly, the clinch screws 15 can be arranged on the outer surface or the inner surface of the cantilever (for example, see Figure 3 The clinch screw 15 of the fixed shaft one 10 is arranged on the inner surface of the cantilever, and the clinch screw 15 of the fixed shaft two 11 is arranged on the outer surface of the cantilever), the transition gear one 16 and the transition gear two 17 are respectively arranged on the fixed shaft one 10 and the fixed shaft two 11 through respective bearings, the inner rings of the bearings are respectively fixed on the fixed shaft one 10 and the fixed shaft two 11 through shaft retaining rings 18, and the outer rings of the bearings are respectively fixed on the transition gear one 16 and the transition gear two 17 through hole retaining rings 19.

[0014] Since the drill sleeve shaft 9 is the final drilling shaft, in order to strengthen the working stability of the drill sleeve shaft 9, support bearing assemblies are respectively arranged on both sides of the drilling gear 13 in the axial direction, the two support bearing assemblies are arranged in reinforcing seats 25, the reinforcing seats 25 are fixedly connected with the cantilever through the upper end cover plates 24 upwards, and the reinforcing seats 25 are fixedly connected with the cylinder extension end of the shell 4 through the sealing bottom plate 20 downwards; The reinforcing seat 25 is actually part of the end of the cantilever of the shell 4, in order to arrange relevant positioning bearings and sealing rings and other parts of the drill sleeve shaft 9, the reinforcing seat 25 is arranged by thickening the entity and machining a through hole system thereon (see Figure 3 and Figure 5 ), the space in the inner wall of the cantilever between the upper end cover plates 24 and the sealing bottom plate 20 and the space within the reinforcing seat 25 and the sealing ring 26 thereof are called a sealed cavity, and the above gears and related bearings are all arranged in the lubrication range.

[0015] The upper surface of the cantilever has an oil cup 21. The outlet of the oil cup 21 delivers lubricating fluid to each gear meshing point through the lubrication channel to achieve lubrication.

[0016] The working principle of the device of the present invention is as follows: See Figure 6 After all the above components are assembled, the drive gear 12, transition gear one 16, transition gear two 17, and drilling gear 13 are aligned and meshed radially in sequence. When the sleeve 22 of the radial drilling machine is fitted with the mating hole 5, it ensures that the spindle drives the tapered shank shaft 8 to rotate. The tapered shank shaft 8 sequentially drives the drive gear 12, transition gear one 16, transition gear two 17, and drilling gear 13 to rotate. The drilling gear 13 drives the coaxial drill sleeve shaft 9 and drill bit 14 to rotate. The upper and lower cantilever of the housing 4 are respectively equipped with a sealing base plate 20 and a shaft end cover plate 24 to form a sealed cavity. Lubricating oil is injected into the sealed cavity through the oil cup 21 to lubricate and cool the gears and related bearings. According to the gear meshing rules, when the total number of gears meshing in sequence is even, the rotation direction of the tapered shank shaft 8 and the drill sleeve shaft 9 is opposite; when the total number of gears meshing in sequence is odd, the rotation direction of the tapered shank shaft 8 and the drill sleeve shaft 9 is the same. Figure 3 In this embodiment, the number of sequentially meshing gears is an even number (therefore, the rotation directions of the tapered shank shaft 8 and the drill sleeve shaft 9 are opposite). To enable the device of this invention to process the hole 2 on the workpiece 1, the following dimensional requirements must be met: a>A b < B h < H Where a is the cantilever length, b is the length from the center line of the drill sleeve shaft 9 to the end of the cantilever, h is the distance from the upper end face of the shaft end cover plate 24 to the tip of the drill bit 14, A is the inner wall length of the shielding part 3, B is the distance between the hole to be processed 2 and the inner side wall of the workpiece 1, and H is the distance between the edge of the hole to be processed 2 and the shielding part 3.

[0017] This invention provides a method for machining obstructed holes using a radial drilling machine, and is implemented using the machining apparatus described above, following these steps: Step 1: Assemble the device of the present invention on the radial drilling machine. See Figure 6 The taper shank 8 is securely connected to the spindle 23, and the mating hole 5 is connected to the sleeve 22 of the radial drilling machine and secured securely using the wedge locking assembly 7 in the locking hole 6. The sleeve 22 of the radial drilling machine does not rotate during operation. The rotating spindle 23 drives the tapered shank shaft 8 to feed or retract during operation. During installation, the mating hole 5 and the outer circle of the sleeve 22 are fitted with a small clearance. The tapered shank of the tapered shank shaft 8 is inserted into the tapered hole of the spindle 23. The cylindrical body of the housing 4 is locked and fixed on the sleeve 22 by the wedge locking assembly 7. When the radial drilling machine is working, the sleeve 22 can drive the entire processing device to feed and the drill bit 14 to drill. The spindle 23 rotates, which can sequentially drive the drive gear 12, the first transition gear 16, the second transition gear 17, and the drilling gear 13 to rotate. Finally, the drilling gear 13 drives the drill sleeve shaft 9 and the drill bit 14 to rotate.

[0018] Step 2: Install and fix workpiece 1. according to Figure 6 Place and fix the workpiece 1 on the worktable of the radial drilling machine. When placing and fixing the workpiece 1, pay attention to the positional relationship between the shielding part 3 and the processing device. Ensure that the drill bit 14 of the processing device meets the operating space of the hole to be processed 2, that is, meets the size requirements of the relevant components in the aforementioned working principle.

[0019] Step 3: Perform machining on hole 2. according to Figure 6 Manually operate the sleeve 22 of the radial drilling machine and move it with the processing device, adjust the up and down and back and forth positions so that the drill bit 14 of the processing device passes around the blocking part 3 and reaches the top of the hole to be processed 2. Before drilling begins, the rotation direction of the spindle 23 is determined. According to the rules of gear meshing, when the total number of gears meshing in sequence is even, the rotation directions of the taper shank shaft 8 and the drill sleeve shaft 9 are opposite; when the total number of gears meshing in sequence is odd, the rotation directions of the taper shank shaft 8 and the drill sleeve shaft 9 are the same (in this embodiment, the number of gears meshing in sequence is even, so the rotation directions of the taper shank shaft 8 and the drill sleeve shaft 9 are opposite). Then, the rocker arm drilling machine is started, the spindle 23 rotates, and sequentially drives the drive gear 12, transition gear one 16, transition gear two 17, and drilling gear 13 to rotate. The drilling gear 13 drives the drill sleeve shaft 9 and the drill bit 14 to rotate, feed and complete the machining of the hole 2 to be processed.

[0020] Example 1 The dimensions of the workpiece are as follows: the diameter of the hole to be processed 2 is φ16 mm and the depth is 30 mm; the inner wall length A of the shielding part 3 is 100 mm; the distance B between the hole to be processed 2 and the inner side wall of the workpiece 1 is 28 mm; and the distance H between the edge of the hole to be processed 2 and the shielding part 3 is 210 mm.

[0021] The parameters of the processing equipment used are: cantilever length a is 105 mm, the length b from the center line of the drill sleeve shaft 9 to the end of the cantilever is 26 mm, the distance h from the upper end face of the shaft end cover plate 24 to the tip of the drill bit 14 is 200 mm, the number of meshing gears is 3, and the processing time is 3 minutes.

[0022] Example 2 The dimensions of the workpiece are as follows: the diameter of the hole to be processed 2 is φ20 mm and the depth is 40 mm; the inner wall length A of the shielding part 3 is 120 mm; the distance B between the hole to be processed 2 and the inner side wall of the workpiece 1 is 30 mm; and the distance H between the edge of the hole to be processed 2 and the shielding part 3 is 270 mm.

[0023] The parameters of the processing equipment used are: cantilever length a is 125 mm, the length b from the center line of the drill sleeve shaft 9 to the end of the cantilever is 28 mm, the distance h from the upper end face of the shaft end cover plate 24 to the tip of the drill bit 14 is 250 mm, the number of meshing gears is 3, and the processing time is 4 minutes.

[0024] Example 3 The dimensions of the workpiece are as follows: the diameter of the hole to be processed is φ25 mm and the depth is 50 mm; the inner wall length A of the shielding part 3 is 170 mm; the distance B between the hole to be processed and the inner side wall of the workpiece 1 is 40 mm; and the distance H between the edge of the hole to be processed and the shielding part 3 is 350 mm.

[0025] The parameters of the processing equipment used are: cantilever length a is 175 mm, the length b from the center line of the drill sleeve shaft 9 to the end of the cantilever is 37 mm, the distance h from the upper end face of the shaft end cover plate 24 to the tip of the drill bit 14 is 330 mm, the number of meshing gears is 4, and the processing time is 5 minutes.

[0026] Example 4 The dimensions of the workpiece are as follows: the diameter of the hole to be processed 2 is φ30 mm and the depth is 60 mm; the inner wall length A of the shielding part 3 is 180 mm; the distance B between the hole to be processed 2 and the inner side wall of the workpiece 1 is 45 mm; and the distance H between the edge of the hole to be processed 2 and the shielding part 3 is 370 mm.

[0027] The parameters of the processing equipment used are: cantilever length a is 185 mm, the length b from the center line of the drill sleeve shaft 9 to the end of the cantilever is 42 mm, the distance h from the upper end face of the shaft end cover plate 24 to the tip of the drill bit 14 is 350 mm, the number of meshing gears is 4, and the processing time is 6 minutes.

[0028] Example 5 The dimensions of the workpiece are as follows: the diameter of the hole to be processed 2 is φ40 mm and the depth is 70 mm; the inner wall length A of the shielding part 3 is 240 mm; the distance B between the hole to be processed 2 and the inner side wall of the workpiece 1 is 55 mm; and the distance H between the edge of the hole to be processed 2 and the shielding part 3 is 480 mm.

[0029] The parameters of the processing equipment used are: cantilever length a is 245 mm, the length b from the center line of the drill sleeve shaft 9 to the end of the cantilever is 53 mm, the distance h from the upper end face of the shaft end cover plate 24 to the tip of the drill bit 14 is 460 mm, the number of meshing gears is 5, and the processing time is 8 minutes.

[0030] Example 6 The dimensions of the workpiece are as follows: the diameter of the hole to be processed 2 is φ50 mm and the depth is 90 mm; the inner wall length A of the shielding part 3 is 250 mm; the distance B between the hole to be processed 2 and the inner side wall of the workpiece 1 is 68 mm; and the distance H between the edge of the hole to be processed 2 and the shielding part 3 is 500 mm.

[0031] The parameters of the processing equipment used are: cantilever length a is 255 mm, the length b from the center line of the drill sleeve shaft 9 to the end of the cantilever is 64 mm, the distance h from the upper end face of the shaft end cover plate 24 to the tip of the drill bit 14 is 480 mm, the number of meshing gears is 5, and the processing time is 10 minutes.

[0032] In all the above processing examples, the machining of the holes to be machined on the workpiece was successfully completed, and the parts were qualified.

Claims

1. A device for machining shielded holes using a radial drilling machine, characterized in that: Including a shell with an L-shaped cross-section (4). The vertical part of the shell (4) is a hollow cylindrical body. The inner circle of the step at the top of the cylindrical body is called the mating hole (5). A fixed base plate is provided near the bottom of the cylindrical body. The fixed base plate has a shaft hole. The thin shaft of the tapered shank shaft (8) passes down through the shaft hole and is fitted with a drive gear (12). The horizontal part of the housing (4) is called the cantilever. There are 2-4 mounting holes arranged side by side in the cantilever. The outer mounting hole is equipped with a drill sleeve shaft (9). The upper end of the drill sleeve shaft (9) is equipped with a drilling gear (13). The lower end of the drill sleeve shaft (9) is equipped with an inner hole called the tool taper shank hole. The other mounting holes are equipped with a fixed shaft. The lower end of the fixed shaft is equipped with a transition gear through a bearing. The driving gear (12), the transition gear, and the drilling gear (13) are aligned and meshed in the radial direction.

2. The apparatus for machining shielded holes using a radial drilling machine according to claim 1, characterized in that, A locking hole (6) perpendicular to the axis of the mating hole (5) is provided on one side of the outer cylindrical surface corresponding to the mating hole (5). The locking hole (6) is partially connected to the mating hole (5). A wedge-shaped locking component (7) is provided in the locking hole (6). During assembly, the mating hole (5) achieves small clearance mating and centering with the outer circle of the sleeve (22) of the radial drilling machine. The mating hole (5) is concentrically set with the tapered shank shaft (8).

3. The apparatus for machining shielded holes using a radial drilling machine according to claim 1, characterized in that, The drive gear (12) and the thin shaft of the taper shank shaft (8) are positioned by a key and fixed with a nut at the lower end to achieve integrated rotation; the drilling gear (13) and the drill sleeve shaft (9) are positioned by a key and fixed with a bolt at the upper end of the drill sleeve shaft (9).

4. The apparatus for machining shielded holes using a radial drilling machine according to claim 1, characterized in that, The fixed shaft is positioned through the hole and fixed in the mounting hole of the cantilever using a saddle screw (15).

5. The apparatus for machining shielded holes using a radial drilling machine according to claim 1, characterized in that, Each of the fixed shafts is equipped with a transition gear through its respective bearing. The inner ring of each bearing is fixed to the fixed shaft through a shaft retaining ring (18), and the outer ring of each bearing is fixed to the transition gear through a hole retaining ring (19).

6. The apparatus for machining shielded holes using a radial drilling machine according to claim 1, characterized in that, The drilling gear (13) is provided with support bearing assemblies on both sides of the axial direction. Both support bearing assemblies are installed in the reinforcing seat (25). The reinforcing seat (25) is fixedly connected to the cantilever by the shaft end cover plate (24) and the reinforcing seat (25) is fixedly connected to the cylindrical extension end of the shell (4) by the sealing base plate (20).

7. A method for machining a shielded hole using a radial drilling machine, employing the apparatus for machining a shielded hole using a radial drilling machine as described in any one of claims 1-6, characterized in that, Follow these steps: Step 1: Assemble the device of the present invention on the radial drilling machine; Step 2, Install and fix the workpiece (1). Place and fix the workpiece (1) on the worktable of the radial drilling machine. When placing and fixing the workpiece (1), the drill bit (14) of the processing device should meet the operating space of the hole (2) to be processed. Step 3: Perform machining on the hole (2) to be machined. Make the drill bit (14) of the processing device bypass the shield (3) and reach the top of the hole (2) to be processed; start the rocker arm drilling machine, the spindle (23) rotates, the drilling gear (13) drives the drill sleeve shaft (9) and the drill bit (14) to rotate, feed and complete the processing of the hole (2).

8. The method for machining a shielded hole using a radial drilling machine according to claim 7, characterized in that, In step 1, the specific process is as follows: during installation, the mating hole (5) and the outer circle of the sleeve (22) are in a small clearance fit, the tapered shank of the tapered shank shaft (8) is inserted into the tapered hole of the main shaft (23), and the cylindrical body of the housing (4) is locked and fixed on the sleeve (22) by the wedge locking assembly (7).

9. The method for machining a shielded hole using a radial drilling machine according to claim 7, characterized in that, Step 3, the specific process is as follows: Manually operate the sleeve (22) of the moving radial drilling machine and move it with the processing device, adjust the up and down and front and back positions so that the drill bit (14) of the processing device passes around the shield (3) and reaches the top of the hole (2) to be processed; Before drilling, determine the rotation direction of the spindle (23), then start the rocker arm drilling machine. The spindle (23) rotates, driving the drive gear (12), transition gear, and drilling gear (13) to rotate in sequence. The drilling gear (13) drives the drill sleeve shaft (9) and drill bit (14) to rotate, feeding and completing the machining of the hole (2) to be processed.

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