Low-stress drilling regulation and control device for machining of high-precision drilling machine

Abstract

The invention discloses a low-stress drilling regulation and control device for high-precision drilling machine machining, and relates to the technical field of drilling equipment, the low-stress drilling regulation and control device comprises a drilling machine, the drilling machine comprises a chuck and a tip, a workbench is arranged at the bottom in the drilling machine, the low-stress drilling regulation and control device further comprises sliding bases, and each sliding base comprises two second sliding bases which are slidably connected to the workbench in a lockable mode; the distance between two second sliding bases in the sliding base is larger than the diameter of a hole needing to be drilled, and first arc-shaped shells are connected to the second sliding bases in a liftable mode. And a first sliding base. The first arc-shaped shell is driven to arrange supporting points on the long-axis machining part at intervals through the multiple movable second sliding bases, and stress is dispersed; during drilling, the first arc-shaped shell and the second arc-shaped shell are combined to form the limiting rings, the two limiting rings clamp a machined part in different directions through the three limiting rollers, cutting force is dispersed, single-point stress concentration is avoided, and drilling precision is ensured.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and in particular to a low-stress drilling control device for high-precision drilling machine processing. Background Technology

[0002] Drilling machines, as commonly used drilling equipment, use a spindle to drive the drill bit to rotate and feed, performing drilling operations on a fixed workpiece, and are widely used in the field of machinery manufacturing. Traditional drilling machines use a tool post to fix the part, achieving basic clamping, but this is prone to drilling deviation due to wobbling. Under the action of cutting force or its own weight, the part is more likely to bend and deform. The rigid contact between the tool post and the part will generate sliding friction when the part rotates, often causing surface scratches and localized thermal deformation, making it difficult to meet the requirements of high-precision machining.

[0003] In existing technologies, adjustable roller clamping components are used in conjunction with a drive motor to complete drilling at both ends of the roller shaft in a single clamping, improving processing efficiency and adapting to roller shafts of various diameters. However, this method cannot dynamically disperse the stress during the processing of long shaft parts, and it is not adaptable enough to parts with tapered edges, easily causing deformation of the parts due to uneven support force. The structure of sliding clamping plates and positioning protrusions is used to achieve parallel sliding clamping of the workpiece. However, this method cannot provide multi-segment support for long shaft parts to disperse stress, making it difficult to meet the high-precision processing requirements of long shaft parts. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of existing technologies that cannot dynamically disperse stress during the machining of long shaft parts, and that are not adaptable to parts with tapered surfaces, and are prone to deformation due to uneven support force. Therefore, a low-stress drilling control device for high-precision drilling is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-stress drilling control device for high-precision drilling, comprising a drilling machine, the drilling machine including a chuck and a center, the bottom of the drilling machine being a worktable, and further comprising:

[0006] The sliding base includes two second sliding bases that are slidably and lockably connected to the worktable, and a first arc-shaped housing is slidably connected to the second sliding base;

[0007] The first sliding base is slidably connected to the worktable, and the drill bit and two second arc-shaped housings are mounted on the first sliding base via a frame.

[0008] The first arc-shaped housing and the second arc-shaped housing cooperate to form a limiting ring, and the long shaft machining parts are clamped between the chuck and the center.

[0009] The support assembly includes multiple rotating plates rotatably connected to the inner side of the limiting ring. Two spring telescopic frames are rotatably and lockably connected to the inner side of the rotating plates. The ends of the two spring telescopic frames away from the rotating plates are rotatably and lockably connected to the same limiting roller. The multiple limiting rollers abut against the outer side of the processed part.

[0010] In the aforementioned low-stress drilling control device for high-precision drilling machine processing, a sliding door is installed on the side of the drilling machine, the distance between the two second sliding bases in the sliding base is greater than the diameter of the required drilling hole, and two electric telescopic rods are installed on the second sliding bases. The output ends of the two electric telescopic rods are fixedly connected to the same mounting housing, and the top of the mounting housing is fixedly connected to the bottom of the first arc-shaped housing.

[0011] In the aforementioned low-stress drilling control device for high-precision drilling machine processing, a lead screw is rotatably connected inside the drilling machine, and a limit rod is fixedly connected. The lead screw is threadedly connected to the first sliding base, and the first sliding base is slidably connected to the limit rod.

[0012] In the aforementioned low-stress drilling control device for high-precision drilling machine processing, the first sliding base is fixedly connected to two first connecting rods via a frame. A small push rod is installed at the end of the first connecting rod away from the frame, and the output end of the small push rod is fixedly connected to the top of the second arc-shaped housing.

[0013] In the aforementioned low-stress drilling control device for high-precision drilling machine processing, small magnets are installed at both ends of the rotating plate, and ferromagnetic blocks that magnetically cooperate with the small magnets are fixedly connected to the first arc-shaped shell and the second arc-shaped shell.

[0014] In the aforementioned low-stress drilling control device for high-precision drilling machine processing, the spring telescopic frame includes two spring telescopic rods. Two fixed blocks are fixedly connected to the inner side of the rotating plate, and the same first rotating rod is fixedly connected between the two fixed blocks. The limiting roller is coaxially rotatably connected to a fixed rod, and a second rotating rod is fixedly connected through both ends of the fixed rod. One end of each of the two spring telescopic rods is rotatably connected to the first rotating rod, and the other end is rotatably connected to the second rotating rod. A first electromagnet that magnetically engages with the first rotating rod and a second electromagnet that magnetically engages with the second rotating rod are installed on the spring telescopic rods.

[0015] In the aforementioned low-stress drilling control device for high-precision drilling machine processing, a rod-shaped damper is rotatably mounted on the first rotating rod, and the rod-shaped damper and the ends of the two spring telescopic rods away from the first rotating rod are fixedly connected to each other by a connecting rod.

[0016] In the aforementioned low-stress drilling control device for high-precision drilling machine processing, mounting blocks are fixedly connected to both ends of the fixed rod, and a second connecting rod is fixedly connected to the mounting block. A rubber roller is rotatably connected to the end of the second connecting rod away from the mounting block. The axial directions of the two rubber rollers are perpendicular to the axial direction of the limiting roller, and the limiting roller and the two rubber rollers abut against the same contact generatrix of the processed part.

[0017] In the aforementioned low-stress drilling control device for high-precision drilling machine processing, a rotating assembly is connected to the mounting housing. The rotating assembly includes a motor mounted on the mounting housing, a gear coaxially fixedly connected to the output end of the motor, and multiple arc-shaped gear rings fixedly connected to the outer sides of multiple rotating plates. Multiple arc-shaped gear rings on the inner side of the limiting ring form an outer gear ring, and the gear meshes with the outer gear ring. A through hole is provided on the mounting housing for the gear to pass through.

[0018] The aforementioned low-stress drilling control device for high-precision drilling machine processing also includes a cooling and lubrication assembly. The cooling and lubrication assembly includes a storage box fixedly connected to the top of the first sliding base. The storage box has a frame wall, is filled with lubricating oil, and has a high-pressure nozzle connected to its side. The high-pressure nozzle sprays out towards the limiting roller on the second arc-shaped housing. Multiple mounting plates are fixedly connected to both ends of the second arc-shaped housing, and brush bristles are fixedly connected between two opposite mounting plates. The brush bristles are located on the rotation path of the limiting roller around the axis of the limiting ring.

[0019] Compared with existing technologies, the advantages of this invention are:

[0020] 1. This invention, by setting up a sliding base and a support assembly, uses multiple movable second sliding bases to drive the first arc-shaped housing to arrange support points at intervals on the long-axis machined part, dispersing stress and reducing hole diameter errors caused by elastic deformation. During drilling, the first arc-shaped housing and the second arc-shaped housing combine to form a limiting ring. Both limiting rings clamp the machined part from different directions through three limiting rollers, dispersing cutting force, avoiding single-point stress concentration, suppressing radial runout and axial movement of the machined part, and ensuring drilling accuracy. Through a telescopic and rotatable spring telescopic rod, the limiting rollers can easily make inclined contact with tapered machined parts, and the rotation of the spring telescopic rod is limited by an electromagnet, realizing rapid positioning of the limiting roller angle without manual adjustment, and adapting to machined parts of different shapes.

[0021] 2. This invention, by setting up a rotating component and modular limiting rollers, enables the motor to operate, driving multiple rotating plates inside the limiting ring to rotate via gears and an external gear ring. This causes the three limiting rollers on the two arc-shaped shells to interchange positions, and the limiting rollers of the second arc-shaped shell work alternately with the multiple limiting rollers of the first arc-shaped shell, effectively avoiding excessive wear of local limiting rollers and extending the service life of the overall system. During the changing of the limiting rollers, brushes remove oil droplets and chips from the surface of the limiting rollers, ensuring the cleanliness of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a low-stress drilling control device for high-precision drilling machine processing proposed in this invention.

[0023] Figure 2 This is a full cross-sectional structural diagram of a low-stress drilling control device for high-precision drilling machine processing proposed in this invention.

[0024] Figure 3 This is a full sectional front view of a low-stress drilling control device for high-precision drilling machine processing proposed in this invention.

[0025] Figure 4 for Figure 2 A magnified view of the details at point A;

[0026] Figure 5 This is a schematic diagram of the storage box structure of a low-stress drilling control device for high-precision drilling machine processing proposed in this invention.

[0027] Figure 6 This is a schematic diagram of the first arc-shaped housing structure of a low-stress drilling control device for high-precision drilling machine processing proposed in this invention.

[0028] Figure 7 This is a schematic diagram of the second arc-shaped housing structure of a low-stress drilling control device for high-precision drilling machine processing proposed in this invention.

[0029] Figure 8 This is a schematic diagram of the full cross-sectional structure of the second arc-shaped housing of a low-stress drilling control device for high-precision drilling machine processing proposed in this invention.

[0030] Figure 9 for Figure 8 A magnified view of the details at point B;

[0031] Figure 10 This is a split view of the limit roller and rubber roller of a low-stress drilling control device for high-precision drilling machine processing proposed in this invention.

[0032] In the diagram: 1. Drilling machine; 2. Pull-out door; 3. Chuck; 4. Lead screw; 5. Limiting rod; 6. First sliding base; 7. Storage box; 8. Drill bit; 9. Machining part; 10. Center; 11. Second sliding base; 12. Worktable; 13. Mounting housing; 14. First arc-shaped housing; 15. First connecting rod; 16. Second arc-shaped housing; 17. Mounting plate; 18. High-pressure nozzle; 19. Limiting roller; 20. Rotating plate; 21. Small magnet; 22. Arc-shaped gear ring; 23. Electric telescopic rod; 24. Gear; 25. Rubber roller; 26. Spring telescopic rod; 27. Motor; 28. Rod-shaped damper; 29. ​​First electromagnet; 30. Fixing block; 31. Mounting block; 32. Second connecting rod; 33. Second electromagnet; 34. Fixing rod; 35. Brush bristles. Detailed Implementation

[0033] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0034] Reference Figures 1-4 A low-stress drilling control device for high-precision drilling machine processing includes a drilling machine 1, which includes a chuck 3 and a center 10. The bottom of the drilling machine 1 is a worktable 12. It also includes:

[0035] A sliding door 2 is installed on the side of the drilling machine 1.

[0036] The sliding base includes two second sliding bases 11 that are slidably and lockably connected to the worktable 12, and a first arc-shaped housing 14 is slidably connected to the second sliding base 11.

[0037] The distance between the two second sliding bases 11 in the sliding base is greater than the diameter of the required hole. Two electric telescopic rods 23 are installed on the second sliding base 11. The output ends of the two electric telescopic rods 23 are fixedly connected to the same mounting housing 13. The top of the mounting housing 13 is fixedly connected to the bottom of the first arc-shaped housing 14.

[0038] Reference Figures 5-8 The first sliding base 6 is slidably connected to the worktable 12. The drill bit 8 and two second arc-shaped housings 16 are mounted on the first sliding base 6 via a frame.

[0039] The drill bit 8 uses existing technology and, when working, drills holes at the drilling positions of the workpiece 9.

[0040] The drill press 1 is rotatably connected to a lead screw 4 and fixedly connected to a limit rod 5. The lead screw 4 is threadedly connected to a first sliding base 6, and the first sliding base 6 is slidably connected to the limit rod 5.

[0041] The lead screw 4 is driven by an external servo device. The rotation of the lead screw 4, in conjunction with the limit rod 5, accurately controls the position of the first sliding base 6, facilitating accurate drilling operations.

[0042] The first sliding base 6 is fixedly connected to two first connecting rods 15 via the frame. A small push rod is installed at the end of the first connecting rod 15 away from the frame, and the output end of the small push rod is fixedly connected to the top of the second arc-shaped housing 16.

[0043] The small push rod adopts the existing electric push rod to control the upper and lower positions of the second arc-shaped housing 16, so as to facilitate the cooperation between the second arc-shaped housing 16 and the first arc-shaped housing 14 and the machined part 9.

[0044] The first arc-shaped housing 14 and the second arc-shaped housing 16 cooperate to form a limiting ring, and the long shaft machining part 9 is clamped between the chuck 3 and the center 10.

[0045] Reference Figures 8-10 The support assembly includes multiple rotating plates 20 rotatably connected to the inner side of the limiting ring. Two spring telescopic frames are rotatably and lockably connected to the inner side of the rotating plates 20. The ends of the two spring telescopic frames away from the rotating plates 20 are rotatably and lockably connected to the same limiting roller 19. The multiple limiting rollers 19 abut against the outer side of the processed part 9.

[0046] Small magnets 21 are installed at both ends of the rotating plate 20, and ferromagnetic blocks that magnetically cooperate with the small magnets 21 are fixedly connected to the first arc-shaped shell 14 and the second arc-shaped shell 16.

[0047] By using the magnetic interaction between the small magnet 21 and the ferromagnetic block, the rotating plate 20 is ensured not to fall inside the second arc-shaped housing 16 when the second arc-shaped housing 16 moves, and the position of the rotating plate 20 is kept stable after rotation.

[0048] The spring telescopic frame includes two spring telescopic rods 26. Two fixed blocks 30 are fixedly connected to the inner side of the rotating plate 20. The same first rotating rod is fixedly connected between the two fixed blocks 30. The limiting roller 19 is coaxially rotatably connected to a fixed rod 34. Both ends of the fixed rod 34 are fixedly connected to a second rotating rod. One end of each of the two spring telescopic rods 26 is rotatably connected to the first rotating rod, and the other end is rotatably connected to the second rotating rod. A first electromagnet 29 that magnetically engages with the first rotating rod and a second electromagnet 33 that magnetically engages with the second rotating rod are installed on the spring telescopic rods 26.

[0049] The spring telescopic rod 26 and two rotating rods work together to allow the limiting roller 19 to adaptably abut against the long shaft and variable diameter machining part 9, providing a clamping and support effect.

[0050] A rod-shaped damper 28 is rotatably mounted on the first rotating rod. The rod-shaped damper 28 and the ends of the two spring telescopic rods 26 away from the first rotating rod are fixedly connected to each other by a connecting rod.

[0051] The rod-shaped damper 28 uses existing technology to impede the telescopic movement of the spring telescopic rod 26, further improving the stability of the clamping support of the limiting roller 19 on the workpiece 9.

[0052] Mounting blocks 31 are fixedly connected to both ends of the fixing rod 34. A second connecting rod 32 is fixedly connected to the mounting block 31. A rubber roller 25 is rotatably connected to the end of the second connecting rod 32 away from the mounting block 31. The axial directions of the two rubber rollers 25 are perpendicular to the axial direction of the limiting roller 19. The limiting roller 19 and the two rubber rollers 25 abut against the same contact line of the processed part 9.

[0053] When the limiting roller 19 moves through the variable diameter section of the processed part 9, the two rubber rollers 25 form two-point support. With the extension and rotation of the spring telescopic rod 26, the limiting roller 19 can automatically pass through the variable diameter section, so that the support assembly can provide follow-up support for the processed part 9.

[0054] A rotating assembly is connected to the mounting housing 13. The rotating assembly includes a motor 27 mounted on the mounting housing 13. A gear 24 is coaxially fixedly connected to the output end of the motor 27. Arc-shaped gear rings 22 are fixedly connected to the outer sides of multiple rotating plates 20. Multiple arc-shaped gear rings 22 on the inner side of the limiting ring form an outer gear ring. The gear 24 meshes with the outer gear ring. A through hole is provided on the mounting housing 13 for the gear 24 to pass through.

[0055] When the output end of the motor 27 drives the gear 24 to rotate, the gear 24 drives the multiple rotating plates 20 inside the limiting ring to rotate synchronously through the multiple arc-shaped gear rings 22 that make up the outer gear ring. This facilitates the adjustment of the position of the upper limit rollers 19 on the two arc-shaped housings, forming the rotation of the limit rollers 19 and avoiding excessive wear of the local limit rollers 19.

[0056] It also includes a cooling and lubrication assembly, which includes a storage box 7 fixedly connected to the top of the first sliding base 6. The storage box 7 has a frame wall, is filled with lubricating oil, and has a high-pressure nozzle 18 connected to its side. The high-pressure nozzle 18 sprays out towards the limiting roller 19 on the second arc-shaped housing 16. Multiple mounting plates 17 are fixedly connected to both ends of the second arc-shaped housing 16. Brush bristles 35 are fixedly connected between two opposite mounting plates 17. The brush bristles 35 are located on the rotation path of the limiting roller 19 around the axis of the limiting ring.

[0057] The high-pressure nozzle 18 is a device that sprays high-pressure fluid in the form of a high-speed jet. When it is working, it sprays lubricating oil mixed with compressed air at high pressure to lubricate and cool the drilling position.

[0058] When using this invention, open the sliding door 2, insert the long shaft machining part 9 into the chuck 3 from the side, use the chuck 3 to clamp one end of the machining part 9, and then use the center 10 to press the other end of the machining part 9 tightly, forming the main clamping support force for the machining part 9 and improving the stability of the machining part 9 when it is drilled.

[0059] Then, the position of the second sliding base 11 on the worktable 12 is adjusted. The two second sliding bases 11 form a sliding base, so that the multiple sliding bases are located at multiple drilling positions of the workpiece 9. The two second sliding bases 11 in each sliding base are located on both sides of the drilling position, providing targeted support.

[0060] Then, according to the requirements, a sliding base is arranged at intervals in non-drilling positions to effectively distribute the weight of the workpiece 9 itself and the cutting force generated during the drilling process to more support positions, greatly reducing the load borne by a single support point, reducing the elastic deformation of the workpiece 9 due to excessive local stress, thereby accurately controlling the hole diameter error and ensuring drilling accuracy.

[0061] After the second sliding base 11 is fixed, the electric telescopic rod 23 is activated, and its output end extends to push the mounting housing 13 and raise the first arc-shaped housing 14 so that the limiting roller 19 on the first arc-shaped housing 14 is exactly against the bottom of the processed part 9, providing basic support for the processed part 9.

[0062] When drilling begins, the first sliding base 6 is moved to the current drilling position by the lead screw 4. Then, the small push rod at the tail of the first connecting rod 15 is activated. The small push rod works, and its output end extends, driving the second arc-shaped housing 16 to move down and abut against the first arc-shaped housing 14. The two arc-shaped housings form a complete limiting ring. At this time, the two limiting rollers 19 on the second arc-shaped housing 16 and the limiting rollers 19 on the first arc-shaped housing 14 provide three-point limiting support for the workpiece 9, improving the stability of drilling and ensuring drilling accuracy.

[0063] When the part 9 needs to be rotated before drilling, the limiting roller 19 rotates on the fixed rod 34 and rotates together with the part 9. During the rotation of the part 9, it maintains the support effect on the part 9 and reduces the wear between the limiting roller 19 and the part 9. Compared with the traditional method of using multiple fixed tool holders to support the part, it reduces the contact between the tool holder and the part and reduces the risk of friction and thermal deformation.

[0064] The two sides of the drilling position of the workpiece 9 are clamped by three limiting rollers 19, thereby distributing the cutting force to six limiting rollers 19, avoiding stress concentration caused by single-point force, effectively suppressing the radial runout and axial movement of the workpiece 9, and ensuring the accuracy of the hole shape.

[0065] The limiting roller 19 adapts to the processing parts 9 of different diameters by extending and retracting the spring telescopic rod 26. The rod-shaped damper 28 reduces the vibration of the processing parts 9 by absorbing and consuming vibration energy, and further reduces stress.

[0066] The spring telescopic rod 26, the fixed block 30, and the fixed rod 34 are all rotatably connected. When facing a tapered workpiece 9, the limiting roller 19 tilts to contact the workpiece 9, ensuring that the limiting roller 19 matches the local taper of the workpiece 9. This prevents the limiting roller 19 from slipping at the contact point due to changes in the taper of the workpiece 9, allowing the limiting roller 19 to flexibly adapt to workpieces 9 of different shapes and sizes without the need for frequent tool changes or adjustments to the support structure.

[0067] Furthermore, when the second arc-shaped housing 16 moves with the first sliding base 6 and passes through the diameter-changing section of the processed part 9, the traditional moving tool holder needs to be readjusted to avoid jamming. At this time, the magnetic locking of the first electromagnet 29 and the second electromagnet 33 is released, allowing the spring telescopic rod 26 to rotate freely. When the limiting roller 19 passes through the diameter-changing section, the front rubber roller 25 contacts the diameter-changing section first, causing the limiting roller 19 to rotate. Relying on the rotation and elasticity of the rubber roller 25, the limiting roller 19 smoothly crosses the diameter-changing section, improving the adaptability to the diameter-changing and long-shaft processed parts 9, without the need to change other clamping devices during the movement.

[0068] After determining the position of the limiting roller 19, the first electromagnet 29 and the second electromagnet 33 are activated to magnetically lock the spring telescopic rod 26, keeping the spring telescopic rod 26 locked to the two rotating rods. This ensures that the limiting roller 19 maintains its limiting support effect on the processed part 9 regardless of the different postures of the spring telescopic rod 26.

[0069] During the drilling process, a high-pressure nozzle 18 is connected to the storage tank 7. The lubricating oil inside the storage tank 7 is mixed with compressed air and then sprayed to the drilling position by the high-pressure nozzle 18, which plays a role in lubrication and cooling. At the same time, it improves the flow direction of the chips and prevents the chips from sticking together. In addition, the high-speed injection of compressed air also helps to remove the frictional heat generated during the cutting process and reduce the cutting temperature.

[0070] When the drill bit 8 is drilling, the first arc-shaped housing 14 and the second arc-shaped housing 16 at this point combine to form a limiting ring. Before drilling begins, the motor 27 is started, and its output end drives the gear 24 to rotate. The gear 24 drives the three arc-shaped gear rings 22 that make up the outer gear ring to rotate, which in turn drives the three rotating plates 20 to rotate, changing the position of the upper limit rollers 19 on the three rotating plates 20. This ensures that the usage time of each limit roller 19 is relatively uniform, and avoids excessive wear of some limit rollers 19, which could lead to performance degradation or failure.

[0071] After drilling is completed, motor 27 is started again to rotate the limiting roller 19 on the second arc-shaped housing 16 and the limiting roller 19 on the first arc-shaped housing 14. This allows the two limiting rollers 19 on the second arc-shaped housing 16 to work alternately with the multiple limiting rollers 19 on the first arc-shaped housing 14, ensuring the uniformity of working time for all limiting rollers 19. This further avoids excessive wear on some limiting rollers 19, extends the service life of all limiting rollers 19 in the entire system, and reduces maintenance frequency and cost.

[0072] The second arc-shaped housing 16 then moves to the next drilling position and combines with the first arc-shaped housing 14 at this position to form a six-point support. The drill bit 8 then drills holes at the drilling positions, and finally completes the drilling operation at all drilling positions.

[0073] When the limit roller 19 rotates around the axis of the limit ring, the oil droplets sprayed onto the limit roller 19 by the high-pressure nozzle 18 are thrown off. In addition, when the limit roller 19 rotates, it passes through the brush 35, which effectively removes oil droplets and chips from the surface of the limit roller 19, thus avoiding affecting the operation of the equipment.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 low-stress drilling control device for high-precision drilling, comprising a drilling machine (1), the drilling machine (1) including a chuck (3) and a center (10), the bottom of the drilling machine (1) being a worktable (12), characterized in that, Also includes: The sliding base includes two second sliding bases (11) that are slidably and lockably connected to the worktable (12), and a first arc-shaped housing (14) is vertically and vertically connected to the second sliding base (11). The first sliding base (6) is slidably connected to the workbench (12). The first sliding base (6) is equipped with a drill bit (8) and two second arc-shaped housings (16) via a frame. The first arc-shaped housing (14) and the second arc-shaped housing (16) cooperate to form a limiting ring, and the long shaft machining part (9) is clamped between the chuck (3) and the center (10). The support assembly includes multiple rotating plates (20) rotatably connected to the inner side of the limiting ring. Two spring telescopic frames are rotatably connected to the inner side of the rotating plates (20). The ends of the two spring telescopic frames away from the rotating plates (20) are rotatably connected to the same limiting roller (19). The multiple limiting rollers (19) abut against the outer side of the processed part (9).

2. The low-stress drilling control device for high-precision drilling machine processing according to claim 1, characterized in that, The side of the drilling machine (1) is equipped with a sliding door (2). The distance between the two second sliding bases (11) in the sliding base is greater than the diameter of the required hole. Two electric telescopic rods (23) are installed on the second sliding bases (11). The output ends of the two electric telescopic rods (23) are fixedly connected to the same mounting housing (13). The top of the mounting housing (13) is fixedly connected to the bottom of the first arc-shaped housing (14).

3. The low-stress drilling control device for high-precision drilling machine processing according to claim 1, characterized in that, The drill press (1) is rotatably connected to a lead screw (4) and fixedly connected to a limit rod (5). The lead screw (4) is threadedly connected to the first sliding base (6), and the first sliding base (6) is slidably connected to the limit rod (5).

4. The low-stress drilling control device for high-precision drilling machine processing according to claim 3, characterized in that, The first sliding base (6) is fixedly connected to two first connecting rods (15) through the frame. A small push rod is installed at the end of the first connecting rod (15) away from the frame. The output end of the small push rod is fixedly connected to the top of the second arc-shaped shell (16).

5. The low-stress drilling control device for high-precision drilling machine processing according to claim 1, characterized in that, Small magnets (21) are installed at both ends of the rotating plate (20), and ferromagnetic blocks that magnetically cooperate with the small magnets (21) are fixedly connected to the first arc-shaped shell (14) and the second arc-shaped shell (16).

6. The low-stress drilling control device for high-precision drilling machine processing according to claim 1, characterized in that, The spring telescopic frame includes two spring telescopic rods (26), two fixed blocks (30) are fixedly connected to the inner side of the rotating plate (20), and the same first rotating rod is fixedly connected between the two fixed blocks (30). The limiting roller (19) is rotatably connected to a fixed rod (34), and the two ends of the fixed rod (34) are fixedly connected to a second rotating rod. One end of each of the two spring telescopic rods (26) is rotatably connected to the first rotating rod, and the other end is rotatably connected to the second rotating rod. A first electromagnet (29) that magnetically cooperates with the first rotating rod and a second electromagnet (33) that magnetically cooperates with the second rotating rod are installed on the spring telescopic rods (26).

7. The low-stress drilling control device for high-precision drilling machine processing according to claim 6, characterized in that, A rod-shaped damper (28) is rotatably mounted on the first rotating rod. The rod-shaped damper (28) and two spring telescopic rods (26) are fixedly connected to each other at the ends away from the first rotating rod through a connecting rod.

8. The low-stress drilling control device for high-precision drilling machine processing according to claim 6, characterized in that, The fixed rod (34) is fixedly connected to both ends of the mounting block (31), and the mounting block (31) is fixedly connected to the second connecting rod (32). The end of the second connecting rod (32) away from the mounting block (31) is rotatably connected to the rubber roller (25). The axial direction of the two rubber rollers (25) is perpendicular to the axial direction of the limiting roller (19). The limiting roller (19) and the two rubber rollers (25) abut against the same contact line of the processing part (9).

9. The low-stress drilling control device for high-precision drilling machine processing according to claim 2, characterized in that, A rotating assembly is connected to the mounting housing (13). The rotating assembly includes a motor (27) mounted on the mounting housing (13). A gear (24) is coaxially fixedly connected to the output end of the motor (27). A multi-rotating plate (20) is fixedly connected to an arc-shaped gear ring (22) on its outer side. The multi-arc-shaped gear ring (22) on the inner side of the limiting ring forms an outer gear ring. The gear (24) meshes with the outer gear ring. A through hole is provided on the mounting housing (13) for the gear (24) to pass through.

10. The low-stress drilling control device for high-precision drilling machine processing according to claim 4, characterized in that, It also includes a cooling and lubrication assembly, which includes a storage box (7) fixedly connected to the top of the first sliding base (6). The storage box (7) has a frame wall, and the inside of the storage box (7) is filled with lubricating oil. A high-pressure nozzle (18) is connected to the side. The high-pressure nozzle (18) sprays out towards the limiting roller (19) on the second arc-shaped housing (16). Multiple mounting plates (17) are fixedly connected to both ends of the second arc-shaped housing (16). Brush bristles (35) are fixedly connected between two opposite mounting plates (17). The brush bristles (35) are located on the rotation path of the limiting roller (19) around the axis of the limiting ring.

Images