A device and method for processing a transverse hole in the inner surface of a deep hole

Abstract

The application relates to the technical field of machining, and discloses a machining device and a machining method for a transverse hole in the inner surface of a deep hole. The device comprises a drilling assembly, a rotating assembly, a feeding driving mechanism, a stroke limiting mechanism and a fixing base. The fixing base is integrally positioned through a positioning structure. A rotary disc can rotate relative to the fixing base and is locked through an angle positioning assembly. An angle electric drill is matched with a drill bit to form a drilling main body. The axial feeding of the drill bit is realized through the feeding driving mechanism. The stroke limiting mechanism accurately controls the drilling depth. The application can realize multi-station accurate positioning, the feeding direction is stable, the drill bit can be prevented from being bent and damaged, the manual operation strength is reduced, the machining precision and the machining efficiency are significantly improved, and the corresponding machining method is simple in process and coherent in flow.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a machining apparatus and method for machining transverse holes on the inner surface of deep holes. Background Technology

[0002] In the production and assembly of large engine blocks for heavy-duty trucks and ships, the cylinder block has deep holes for assembling pistons. The inner wall of these deep holes has several transverse holes circumferentially distributed, connecting cooling oil passages and water circulation channels. The diameter of these transverse holes is much smaller than the inner diameter of the piston's deep hole, representing a typical deep-hole inner wall lateral hole structure. The narrow machining space and limited working conditions make this a challenging process in cylinder block machining. Currently, the industry mainly uses two machining methods. One method involves using an angled drill bit inserted into the deep hole to complete the sidewall drilling. However, due to structural size limitations, a standard angled drill bit cannot enter the small-diameter piston's deep hole, resulting in significant limitations in the applicability of this process.

[0003] For small-diameter deep hole drilling situations where angled drills cannot operate, manual drilling with a hand-held electric drill is often used on site. Figure 1 As shown. Due to the narrow internal space of the piston hole, it is difficult for operators to apply the thrust smoothly along the drilling axis, and the feed direction is prone to deviation, making it impossible to guarantee linear feed. At the same time, it is difficult to accurately control the drilling depth manually, resulting in poor consistency of machining dimensions. The deviated feed force can also easily cause the drill bit to bend or break, leading to a high rate of component wear.

[0004] In addition, manual hand-held electric drills rely on continuous human force throughout the entire process, resulting in high labor intensity during long hours of operation. Furthermore, relying on manual alignment and positioning makes it difficult to guarantee the circumferential angle accuracy and hole position consistency of multiple transverse holes on the inner wall of deep holes, leading to unstable processing quality, low overall processing efficiency, and difficulty in meeting the processing requirements of mass production of engine cylinder blocks. Summary of the Invention

[0005] The purpose of this invention is to provide a processing device for transverse holes on the inner surface of deep holes, which can be adapted to the operation of small inner diameter deep holes, realize the precise positioning and processing of multiple transverse holes on the same plane, and reduce drill bit wear and manual labor intensity.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An apparatus for machining transverse holes on the inner surface of deep holes, comprising: Drilling assembly, including an angle drill and a drill bit mounted on the angle drill, the angle drill being fixed on a drill base; The rotary assembly includes a rotary disk and a base fixed to the lower end of the rotary disk. The drill base is slidably engaged with the base, and the rotary disk has a clearance opening for the electric drill at the corresponding angle. The feed drive mechanism is connected to the drill base and drives the drill bit to reciprocate along its axial direction. The stroke limit mechanism is located at the feed drive mechanism and is used to control the drill bit feed stroke; The fixed base is connected to the deep hole end face of the workpiece through a positioning structure. The rotating disk is rotatably mounted on the fixed base, and an angle positioning component is provided between the fixed base and the rotating disk.

[0007] In the above technical solution, by integrating drilling components, rotary components, feed drive mechanism, stroke limit mechanism and fixed base with angle positioning component, the overall structure is adapted to the narrow working space of small inner diameter deep holes, and gets rid of the dilemma that traditional angle heads cannot enter the machining of small diameter deep holes due to size limitations; the rotary table can rotate flexibly and cooperate with the angle positioning component to achieve circumferential positioning, which can machine transverse holes in different directions on the inner wall of deep holes; the drill base and the base slide to ensure that the drill bit moves along the fixed axis; the feed drive mechanism provides power for the reciprocating motion of the drill bit; the stroke limit mechanism can accurately limit the drilling depth. Structurally, it solves the problems of easy deviation of the feed direction and difficulty in controlling the drilling depth of manual handheld electric drills, and greatly improves the stability and basic accuracy of deep hole inner lateral hole machining.

[0008] Preferably, the base is provided with a sliding groove, and the drill bit slides into the sliding groove.

[0009] Preferably, the feed drive mechanism includes a rack shaft, a gear shaft, and a ratchet wrench; the ratchet wrench is connected to the gear shaft, and the gear on the gear shaft meshes with the rack; the base has a sliding fit hole, the rack passes through the sliding fit hole and is fixedly connected to the drill base, and the gear shaft is rotatably mounted on the rotary disk.

[0010] Preferably, the travel limiting mechanism includes a limiting screw, which is fixedly mounted on the base; a limiting groove is formed on the rack, and the end of the limiting screw is slidably placed inside the limiting groove.

[0011] Preferably, the fixed base includes a chassis and a pressure cover; the chassis extends upward from its periphery to form a raised edge, the pressure cover is fastened to the raised edge, and the pressure cover and the raised edge enclose a track groove for the rotating disk to rotate.

[0012] Preferably, the angle positioning component includes an elastic pin, and a pin hole is provided on the fixed base at the corresponding machining position, so that the elastic pin can be inserted into the pin hole to achieve positioning.

[0013] Preferably, a drill sleeve is installed at the lower end of the fixed base corresponding to the drilling position, and the drill bit can pass through the drill sleeve to complete the guiding feed.

[0014] Preferably, the positioning structure includes at least two positioning pins, each of which is fixedly disposed at the lower end of the fixed seat.

[0015] Preferably, an anti-misalignment block is also fixed at the lower end of the fixing base.

[0016] The purpose of this invention is to provide a method for machining multiple transverse holes on the inner surface of a deep hole, thereby improving the accuracy of hole position angle and depth, as well as machining efficiency.

[0017] To achieve the above objectives, the present invention adopts the following technical solution: A method for machining multiple transverse holes on the inner surface of a deep hole, using the aforementioned apparatus for machining transverse holes on the inner surface of a deep hole, includes the following steps: S1. Positioning and installation: The device is fixed to the end face of the deep hole of the workpiece using the positioning structure at the bottom of the fixed base; S2, Angle Locking: Rotate the rotary disk and lock it to align the drill bit with the transverse hole to be machined; S3, Feed Drilling: Start the angle electric drill, operate the feed drive mechanism to drive the drill bit to feed axially, and control the drilling depth through the stroke limit mechanism; S4, Reverse Reset: Controls the feed drive mechanism to run in reverse, returning the drill bit to its initial position; S5. Cyclic processing: Release the locking state of the rotary table, rotate the rotary table to switch processing positions and lock it again, repeat the drilling and reset process to complete all transverse hole processing; S6. Remove the device: After all holes have been machined, remove the device from the workpiece.

[0018] This processing method relies on the aforementioned processing device to carry out the operation. The process flow is coherent and standardized. First, the overall positioning of the device is completed, and then the angle is locked, the drilling feed is performed, and the drill bit is reset in sequence. Multiple transverse holes are continuously processed by repeatedly switching the work station. Finally, the device is dismantled. The entire process does not require manual hand-held electric drills to forcefully push and exert force. The operation is simple and the labor intensity is low. At the same time, the device's own positioning, guiding and limiting structure ensures the dimensional accuracy of the angle and depth of each transverse hole. The processing efficiency is much higher than that of traditional manual drilling methods, making it suitable for mass production. Attached Figure Description

[0019] Figure 1 A schematic diagram illustrating the manual drilling method using a pistol-operated electric drill. Figure 2 This is a diagram showing the usage state of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention; Figure 4 for Figure 3 A structural diagram from another angle; Figure 5 This is a schematic diagram showing the fit between the fixed base and the rotating disk; Figure 6 This is a schematic diagram of the structure of the fixed base; Figure 7 for Figure 6 A structural diagram from another angle; Figure 8 This is a schematic diagram showing the interaction between the drilling assembly, the feed drive mechanism, and the stroke limit mechanism. Figure 9 for Figure 8 A structural diagram from another angle. Among them, the angle electric drill 1, drill bit 2, drill base 3, rotary disk 4, base 5, clearance port 6, fixed seat 7, deep hole end face of workpiece 8, slide groove 9, rack shaft 10, gear shaft 11, ratchet wrench 12, limit screw 13, limit groove 14, chassis 15, pressure cap 16, track groove 17, elastic pin 18, pin hole 19, drill sleeve 20, positioning pin 21, and anti-misalignment block 22. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] like Figure 2-9 A processing apparatus for transverse holes on the inner surface of deep holes, comprising: The drilling assembly includes an angle drill 1 and a drill bit 2 mounted on the angle drill 1, the angle drill 1 being fixed on a drill base 3; The rotary assembly includes a rotary disk 4 and a base 5 fixed at the lower end of the rotary disk 4. The drill base 3 is slidably engaged with the base 5. The rotary disk 4 has a clearance opening 6 for the electric drill 1 at the corresponding angle. The feed drive mechanism is connected to the drill base 3 and drives the drill bit 2 to reciprocate along its axial direction. The stroke limit mechanism is located at the feed drive mechanism and is used to control the feed stroke of drill bit 2; The fixed base 7 is connected to the deep hole end face 8 of the workpiece through a positioning structure. The rotating disk 4 is rotatably mounted on the fixed base 7. An angle positioning component is provided between the fixed base 7 and the rotating disk 4.

[0022] In the above technical solution, by integrating drilling components, rotary components, feed drive mechanism, stroke limit mechanism and fixed base 7 with angle positioning component, the overall structure is adapted to the narrow working space of small inner diameter deep holes, and gets rid of the dilemma that traditional angle heads cannot enter small diameter deep hole processing due to size limitations; the rotary disk 4 can rotate flexibly and cooperate with the angle positioning component to achieve circumferential positioning, which can process transverse holes in different directions on the inner wall of deep holes; the drill base 3 and the base 5 slide to ensure that the drill bit 2 moves along the fixed axis; the feed drive mechanism provides power for the reciprocating motion of the drill bit 2; the stroke limit mechanism can accurately limit the drilling depth, and structurally solves the problems of easy deviation of the feed direction and difficulty in controlling the drilling depth of manual hand-held electric drills, which greatly improves the stability and basic accuracy of deep hole inner lateral hole processing.

[0023] Furthermore, a groove 9 is provided on the base 5, and the drill bit 3 slides in contact with the groove 9. The groove 9 on the base 5 and its sliding contact with the drill bit 3 provide stable guidance for the linear movement of the drill bit 3, the angle drill 1, and the drill bit 2, constrain the movement trajectory of the drill bit 2, effectively prevent the feed direction from deviating during drilling, further reduce the probability of the drill bit 2 breaking due to uneven force, and ensure the smooth progress of drilling operations.

[0024] Furthermore, the feed drive mechanism includes a rack shaft 10, a gear shaft 11, and a ratchet wrench 12; the ratchet wrench 12 is connected to the gear shaft 11, and the gear on the gear shaft 11 meshes with the rack 10; the base 5 has a sliding fit hole, through which the rack shaft 10 passes and is fixedly connected to the drill bit 3, and the gear shaft 11 is rotatably mounted on the rotary disk 4. By defining the feed drive mechanism as a combination of the gear shaft, rack shaft 10, and ratchet wrench 12, the rotational motion of the ratchet wrench 12 is converted into the linear feed of the drill bit 2 through the transmission of the rack and pinion 10. The operator only needs to operate the ratchet wrench 12 to complete the drilling feed, changing the traditional manual pushing and force application method of a pistol drill, and significantly reducing the intensity of manual operation; at the same time, the rack shaft 10 passes through the sliding fit hole of the base 5, and the gear shaft 11 is rotatably mounted on the rotary disk 4, resulting in a compact structural layout that can fully adapt to the limited operating space inside deep holes.

[0025] It should be noted that the rack shaft 10 can be a gear tooth machined on a round shaft, and a bushing is provided in the sliding fit hole, with the rack shaft 10 slidingly fitted with the bushing.

[0026] Furthermore, the stroke limiting mechanism includes a limiting screw 13, which is fixedly mounted on the base 5; a limiting groove 14 is formed on the rack shaft 10, and the end of the limiting screw 13 is slidably placed inside the limiting groove 14. The limiting screw 13 fixed on the base 5 and the limiting groove 14 on the rack shaft 10 cooperate to form the stroke limiting mechanism. Relying on the sliding contact boundary between the two, the maximum feed distance of the rack shaft 10 and the drill bit 2 is precisely limited, which can strictly control the drilling depth, solve the problems of inconsistent drilling depth and large dimensional deviations in traditional manual drilling, and ensure that the machining depth of all transverse holes is uniform and meets the process requirements.

[0027] Furthermore, the fixed base 7 includes a chassis and a pressure cover 16; the chassis extends upward from its periphery to form a raised edge, and the pressure cover 16 is fastened to the raised edge, forming a track groove 17 between the pressure cover 16 and the raised edge, allowing the rotary disk 4 to rotate. By setting the fixed base 7 as a combination structure of chassis and pressure cover 16, the two work together to form the track groove 17 for the rotary disk 4 to operate, which not only realizes the coaxial rotation function of the rotary disk 4, but also provides reliable support and constraint for the rotary disk 4, avoiding shaking or deviation during the rotation of the rotary disk 4, ensuring the accuracy of circumferential repositioning, and improving the consistency of multi-station processing.

[0028] Furthermore, the angle positioning component includes a resilient pin 18, and a pin hole 19 is provided on the fixed base 7 at the corresponding machining position. The resilient pin 18 can be inserted into the pin hole 19 to achieve positioning. Angle positioning is achieved by inserting the resilient pin 18 on the rotating disk 4 into the pin hole 19 on the fixed base 7. Rotating the rotating disk 4 allows for quick positioning and locking. The positioning operation is simple and fast, and the plug-in positioning structure provides high positioning accuracy, effectively ensuring the circumferential angle accuracy of multiple transverse holes on the inner wall of deep holes, overcoming the defect of large angle deviation in manually drilled holes. The resilient pin 18 is a standard part.

[0029] Furthermore, a drill sleeve 20 is installed at the lower end of the fixed base 7 corresponding to the drilling position, and the drill bit 2 can pass through the drill sleeve 20 to complete the guided feed. By installing a drill sleeve 20 at the lower end of the fixed base 7 corresponding to the drilling position, the drill bit 2 passes through the drill sleeve 20 for feeding operations. The drill sleeve 20 can play a secondary guiding role for the drill bit 2, further correct the feeding posture of the drill bit 2, prevent the drill bit 2 from swinging after extension, further reduce the wear of the drill bit 2, and at the same time improve the roundness and positional accuracy of the transverse hole.

[0030] Furthermore, the positioning structure includes at least two positioning pins 21, both of which are fixedly mounted on the lower end of the fixed seat 7. Using the positioning pins 21 as the positioning structure, positioning holes are formed on the deep hole end face 8 of the workpiece to engage with the positioning pins 21, thereby achieving positioning between the positioning seat and the deep hole end face 8 of the workpiece.

[0031] Specifically, a mis-proof block 22 is also fixed to the lower end of the fixed base 7. If drilling is not required at the corresponding machining position after the drilling assembly rotates 180 degrees, a mis-proof block should be installed here to prevent incorrect machining; if drilling is required at both positions at 180 degrees, a mis-proof block is not required.

[0032] Furthermore, the angle drill 1 is locked and fixed to the drill base 3 by screws. Using screws to lock and fix the angle drill 1 to the drill base 3 ensures a firm and reliable connection structure, preventing the angle drill 1 from loosening or shifting during operation and feeding, ensuring that the relative position of the drill bit 2 and the power unit remains unchanged. At the same time, the screw connection is easy to install and remove, facilitating later equipment maintenance and component replacement.

[0033] The present invention also provides a method for machining multiple transverse holes on the inner surface of a deep hole, using the above-mentioned apparatus for machining transverse holes on the inner surface of a deep hole, comprising the following steps: S1. Positioning and installation: Using the positioning structure at the bottom of the fixing seat 7, the device is fixed to the deep hole end face 8 of the workpiece; S2, Angle Locking: Rotate the rotary disk 4 and lock it to align the drill bit 2 with the transverse hole to be machined; S3, Feeding Drilling: Start the angle electric drill 1, control the feed drive mechanism to drive the drill bit 2 to feed axially, and control the drilling depth through the stroke limit mechanism; S4, Reverse Reset: Controls the feed drive mechanism to run in reverse, returning drill bit 2 to its initial position; S5. Cyclic processing: Release the locking state of rotary disk 4, rotate rotary disk 4 to switch processing positions and lock it again, repeat the drilling and reset process to complete all transverse hole processing; S6. Remove the device: After all holes have been machined, remove the device from the workpiece.

[0034] This processing method relies on the aforementioned processing device to carry out the operation. The process flow is continuous and standardized. First, the overall positioning of the device is completed, and then the angle is locked, the drilling feed is performed, and the drill bit 2 is reset in sequence. Multiple transverse holes are continuously processed by repeatedly switching the work position. Finally, the device is dismantled. The entire process does not require manual hand-held electric drill to forcefully push and exert force. The operation is simple and the labor intensity is low. At the same time, the device's own positioning, guiding and limiting structure ensures the dimensional accuracy of the angle and depth of each transverse hole. The processing efficiency is much higher than that of traditional manual drilling methods, making it suitable for mass production.

[0035] The specific operating procedure for this device is as follows: 1. Overall positioning of the device: The entire processing device is moved to the workpiece to be processed. The positioning pin at the lower end of the fixed seat is used to fix the fixed seat to the end face of the deep hole of the engine cylinder and the corresponding pin hole to complete the overall positioning and installation of the device. The track groove formed by the chassis and the pressure cover can ensure that the rotating disk rotates flexibly and coaxially. 2. Machining station angle locking: Rotate the rotary table to drive the base and drilling components on it to rotate synchronously until the drill bit is aligned with the first transverse hole to be machined; insert the elastic pin into the corresponding pin hole of the fixed seat to complete the circumferential locking of the rotary table and determine the machining angle. 3. Drilling preparation and feeding operation: Start the angle electric drill and drive the drill bit to rotate at high speed; the operator reciprocates to turn the ratchet wrench, driving the gear shaft and the gear on the shaft to rotate synchronously, and the gear drives the rack that meshes with it to move in a straight line; the rack shaft passes through the sliding fit hole on the base and drives the drill base to slide along the base slide groove, and the angle electric drill and drill bit advance along the drilling axis. After the drill bit passes through the drill bushing on the fixed seat to complete the guidance, it drills the inner wall of the deep hole; 4. Depth Limit and Drill Bit Reset: When the rack moves to the end of the rack limit groove where the limit screw abuts, the drill bit reaches the preset drilling depth, the feed action is restricted, and the ratchet wrench stops rotating in the forward direction; the ratchet wrench is switched in the reverse direction and reciprocated, driving the gear and rack to move in the opposite direction, driving the drill base, angle drill and drill bit to return to the initial position along the axis, completing the single hole machining; 5. Multi-station cyclic machining: Pull out the elastic pin to release the locking state of the rotary table; continue to rotate the rotary table to the next hole to be machined, and insert the elastic pin into the corresponding pin hole again to complete the angle locking. Repeat the above drilling and reset operations; follow this process to complete the machining of all transverse holes on the inner wall of the deep hole. 6. Completion and Disassembly: After all transverse holes have been machined, turn off the angle drill and confirm that the drill bit has completely retracted to the initial position; remove the entire machining device from the deep hole end face of the workpiece, and the entire machining process is complete.

[0036] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing apparatus for transverse holes on the inner surface of deep holes, characterized in that, include: The drilling assembly includes an angle drill (1) and a drill bit (2) mounted on the angle drill (1), the angle drill (1) being fixed on a drill base (3); The rotary assembly includes a rotary disk (4) and a base (5) fixed at the lower end of the rotary disk (4). The drill base (3) is slidably engaged with the base (5). The rotary disk (4) has a clearance opening (6) for the electric drill (1) at the corresponding angle. The feed drive mechanism is connected to the drill base (3) and drives the drill bit (2) to reciprocate along its axial direction; The stroke limit mechanism is located at the feed drive mechanism and is used to control the feed stroke of the drill bit (2); The fixed seat (7) is connected to the deep hole end face (8) of the workpiece through a positioning structure. The rotating disk (4) is rotatably mounted on the fixed seat (7). An angle positioning component is provided between the fixed seat (7) and the rotating disk (4).

2. The apparatus for processing transverse holes on the inner surface of deep holes according to claim 1, characterized in that, A groove (9) is provided on the base (5), and the drill base (3) slides in conjunction with the groove (9).

3. The apparatus for processing transverse holes on the inner surface of deep holes according to claim 1 or 2, characterized in that, The feed drive mechanism includes a rack shaft (10), a gear shaft (11), and a ratchet wrench (12); the ratchet wrench (12) is connected to the gear shaft (11), and the gear on the gear shaft (11) meshes with the rack shaft (10); the base (5) has a sliding fit hole, the rack shaft (10) passes through the sliding fit hole and is fixedly connected to the drill base (3), and the gear shaft (11) is rotatably mounted on the rotary disk (4).

4. The apparatus for processing transverse holes on the inner surface of deep holes according to claim 3, characterized in that, The travel limit mechanism includes a limit screw (13), which is fixedly installed on the base (5); a limit groove (14) is opened on the rack shaft (10), and the end of the limit screw (13) is slidably placed inside the limit groove (14).

5. The apparatus for processing transverse holes on the inner surface of deep holes according to claim 1, 2, or 4, characterized in that, The fixed base (7) includes a chassis and a cover (16); the chassis extends upward to form a raised edge, the cover (16) is fastened to the raised edge, and the cover (16) and the raised edge enclose to form a track groove (17) for the rotating disk (4) to rotate.

6. The apparatus for machining transverse holes on the inner surface of deep holes according to claim 1, 2, or 4, characterized in that, The angle positioning component includes an elastic pin (18), and a pin hole (19) is provided on the fixed base (7) at the corresponding processing position. The elastic pin (18) can be inserted into the pin hole (19) to achieve positioning.

7. The apparatus for machining transverse holes on the inner surface of deep holes according to claim 1, 2, or 4, characterized in that, A drill sleeve (20) is installed at the lower end of the fixed base (7) corresponding to the drilling position. The drill bit (2) can pass through the drill sleeve (20) to complete the guiding feed.

8. The apparatus for machining transverse holes on the inner surface of deep holes according to claim 1, 2 or 4, characterized in that, The positioning structure includes at least two positioning pins (21), which are fixedly set at the lower end of the fixed seat (7).

9. The apparatus for machining transverse holes on the inner surface of deep holes according to claim 1, 2 or 4, characterized in that, The lower end of the fixed base (7) is also fixed with an anti-misalignment block (22).

10. A method for machining multiple transverse holes on the inner surface of a deep hole, characterized in that, The apparatus for machining transverse holes on the inner surface of deep holes according to any one of claims 1 to 9 includes the following steps: S1. Positioning and installation: Using the positioning structure at the bottom of the fixed seat (7), the device is fixed to the deep hole end face (8) of the workpiece. S2, Angle Locking: Rotate the rotary disk (4) and lock it to align the drill bit (2) with the transverse hole to be processed; S3, Feeding Drilling: Start the angle electric drill (1), control the feed drive mechanism to drive the drill bit (2) to feed axially, and control the drilling depth through the stroke limit mechanism; S4, Reverse Reset: Control the feed drive mechanism to run in reverse and return the drill bit (2) to the initial position; S5. Cyclic processing: Release the locking state of the rotary disk (4), rotate the rotary disk (4) to switch the processing position and lock it again, repeat the drilling and reset process, and complete all transverse hole processing; S6. Remove the device: After all holes have been machined, remove the device from the workpiece.

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