Multi-axis linkage fine deep cavity precision milling device

Abstract

The utility model discloses a kind of multi-shaft linkage fine deep cavity precision milling processing device, belong to data analysis and display device design field;Including base, milling machine and double slide rail system, the double slide rail system is set on base, double slide rail system includes transverse slide rail and longitudinal slide rail, transverse slide rail is set on longitudinal slide rail and moves on longitudinal slide rail, transverse slide rail is provided with connecting plate, and milling machine is connected on the connecting plate The rotation shaft of milling machine is connected with milling machine, and moving device is provided on the four corners of base, and guiding auxiliary device is provided on the front end and both sides of base, and moving device and guiding auxiliary device cooperate with each other. The utility model sets up milling machine on transverse slide rail, prolongs the length of boring bar head, reduces construction difficulty.

Description

Technical Field

[0001] This utility model relates to the field of deep cavity machining, specifically to a multi-axis linkage precision milling machine for fine deep cavities. Background Technology

[0002] Because some narrow cavities, such as deep cavities, exist in steel structures for hydraulic and hydropower projects, machining these dimensions requires completion within a completely enclosed structure due to structural limitations. This is virtually impossible with conventional machining methods, resulting in harsh environments, low efficiency, and poor consistency. Due to the limited space, deep boring heads generally have insufficient insertion length, especially with low rotational speeds, significantly impacting machining efficiency. To achieve milling in confined spaces, a roller motor-driven control system with XY cross slide rails and a main rotating axis is used. The milling machine spindle features manually adjustable Rz and Z axis slide rails. The machining equipment is pushed into the deep cavity, and its direction and position can be quickly adjusted within the range of the roller motor-driven control system. A vacuum suction block is located below the bottom rail; its position is manually adjusted and fixed. Once fixed, the Rz and Z axis slide rails are manually adjusted to find the main rail working surface. After finding the surface, the operator can leave the deep cavity, and the milling program can be started by pressing the start button.

[0003] In existing milling processes, Chinese invention patent CN108044357B, entitled "A Narrow Deep Cavity Track-Type Multi-Power Head Machining Device," discloses a device comprising a guide rail, a base frame, a longitudinal axis shifting feed mechanism, and a machining module. The base frame is connected to the guide rail via a slide block, and both the longitudinal axis shifting feed mechanism and the machining module are mounted on the base frame. The longitudinal axis shifting feed mechanism achieves precise longitudinal movement of the machining module through gear engagement with the rack on the inner side of the guide rail seat on the milling machine. The longitudinal axis shifting feed mechanism participates in multi-axis linkage to achieve precise interpolation motion of the machining module.

[0004] The aforementioned existing technology has the following problems:

[0005] 1. In the above-mentioned prior art, during milling, a milling transverse axis feed mechanism is set on the vertical milling module. This structure cannot be extended, which will result in insufficient extension length of the deep milling head.

[0006] 2. The aforementioned existing technology only addresses the lateral and longitudinal movement of the boring bar head, and cannot adjust the drilling module as a whole in the depth direction; during milling, the position of the milling machine tool needs to be adjusted multiple times, reducing construction efficiency and accuracy.

[0007] 3. The existing technology described above can only drill on one side of the space and cannot be quickly adjusted to drill on both sides, thus reducing construction efficiency. Summary of the Invention

[0008] The purpose of this invention is to overcome the aforementioned problems and propose a multi-axis linkage precision milling device for fine and deep cavities, which solves the problems of insufficient extension length of the deep boring head and low milling efficiency and accuracy in the existing technology.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A multi-axis linkage precision milling device for fine and deep cavities, characterized in that it includes a base, a milling machine tool, and a dual slide rail system. The dual slide rail system is mounted on the base, and the milling machine tool is mounted on the dual slide rail system. The dual slide rail system includes a transverse slide rail and a longitudinal slide rail. The transverse slide rail is slidably mounted on the longitudinal slide rail. A connecting plate is slidably mounted on the transverse slide rail and connected to the milling machine spindle on the milling machine tool. A vacuum suction block is fixedly mounted below the longitudinal slide rail to support it. A suction block motor is mounted on the vacuum suction block and connected to a vacuum pump on the vacuum suction block. A moving device for driving the base movement is mounted on the base.

[0011] The longitudinal slide rail is welded to the base.

[0012] The connecting plate is equipped with a connecting plate motor, which is connected to the connecting plate transmission gear at the bottom of the connecting plate.

[0013] A slide rail motor is provided at the end of the transverse slide rail, and the slide rail motor is connected to the lead screw drive structure at the bottom of the transverse slide rail.

[0014] The milling machine tool includes a milling mechanism, an adjustment mechanism, a machine tool, and a machine tool motor. The milling mechanism is fixedly connected to the adjustment mechanism, and the adjustment mechanism is fixedly connected to the machine tool. The milling machine spindle is located at the bottom of the machine tool, and the machine tool motor is installed on the machine tool. The machine tool motor is connected to the milling machine spindle transmission gear on the milling machine spindle.

[0015] The milling mechanism includes a boring bar head, a milling machine spindle, an L-shaped connecting plate, and a motor. The boring bar head is fixedly connected to the milling machine spindle, and one side of the L-shaped connecting plate is fixedly connected to the milling machine spindle, while the other side is connected to the motor.

[0016] The adjustment mechanism includes an adjustment shaft, a milling machine tool connecting plate, an adjustment slide rail, and a connecting seat sleeve. The front end of the connecting seat sleeve is fixedly connected to the adjustment slide rail. The milling machine tool connecting plate is slidably connected to the adjustment slide rail. The milling machine tool connecting plate is fixedly connected to the adjustment shaft. The adjustment shaft is fixedly connected to the L-shaped connecting plate.

[0017] The mobile device is an electric roller, and a roller motor is installed on the base. The roller motor is connected to the electric roller transmission gear inside the base.

[0018] The base is equipped with a guiding auxiliary device, which includes a guide wheel and a laser sensor. The guide wheel is located at the front end of the base, and the laser sensor is located on both sides of the base.

[0019] The vacuum suction block includes a suction block, a suction block motor, an elastic sealing ring, a vacuum pump, and an annular ring. The elastic sealing ring covers the surface of the suction block, and the suction block is equipped with a vacuum pump and an annular ring adsorbed on a longitudinal slide rail.

[0020] The advantages of using this utility model are:

[0021] Compared with existing technologies, this utility model, by setting the milling machine tool on the transverse slide rail, allows the milling machine tool to move and extend outward on both sides, extending the insertion length of the boring bar head and reducing construction difficulty; through the moving device, the milling processing device can be easily pushed into the deep cavity without the need for other equipment; by using vacuum suction blocks to adhere to the processing surface, a rigid fixation is formed, avoiding displacement caused by processing vibration; after the vacuum suction blocks are adsorbed, they can provide a reference plane for the slide rail movement, improving the multi-axis linkage accuracy; through the cooperation of the moving device and the guiding auxiliary device, the milling position of the milling machine tool is more precise.

[0022] Compared with existing technologies, longitudinal guideways increase the overall depth of milling machines, enabling them to reach deeper positions for machining and reducing the difficulty of machining.

[0023] The milling machine's spindle enables the milling machine tool and boring bar head to rotate laterally within the deep cavity, eliminating the need to adjust the direction of the milling machine tool and allowing for milling on both sides of the deep cavity, thus improving construction efficiency.

[0024] By adjusting the longitudinal rotation of the shaft and the up-and-down movement of the slide rail, the boring bar head can be arbitrarily adjusted to meet the construction needs under different conditions and expand the overall operability range.

[0025] The electric rollers are remotely controlled via wireless remote control to push in, pull out, and stop suddenly, providing efficient mobility and achieving semi-automatic positioning.

[0026] 6. The guide wheel contacts the inner wall to prevent the device from shifting; the laser sensor measures the distance between the processing device and the side wall, and automatically adjusts the roller speed through the feedback signal; the roller speed is adjusted by the cooperation of the guide wheel and the laser sensor to achieve dynamic correction. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a front view of the present utility model;

[0029] Figure 3This is a top view of the present invention.

[0030] Reference numerals: 1. Base; 2. Milling machine tool; 3. Double slide rail system; 4. Transverse slide rail; 5. Longitudinal slide rail; 6. Connecting plate; 7. Milling machine spindle; 8. Milling mechanism; 9. Adjustment mechanism; 10. Boring rod head; 11. Milling machine tool spindle; 12. L-shaped connecting plate; 13. Motor; 14. Adjusting spindle; 15. Milling machine tool connecting plate; 16. Adjusting slide rail; 17. Connecting seat sleeve; 18. Vacuum suction block; 19. Machine tool motor; 20. Connecting plate motor; 21. Moving device; 22. Electric roller; 23. Guide wheel; 24. Laser sensor; 25. Roller motor; 26. Guiding auxiliary device; 27. Suction block motor; 28. Suction block; 29. ​​Elastic sealing ring; 30. Vacuum pump; 31. Annular ring; 32. Slide rail motor; 33. Machine tool. Detailed Implementation

[0031] Example 1

[0032] A multi-axis linkage precision milling machine for fine and deep cavities includes a base 1, a milling machine tool 2, and a dual slide rail system 3. The dual slide rail system 3 is mounted on the base 1, and the milling machine tool 2 is mounted on the dual slide rail system 3. The dual slide rail system 3 includes a transverse slide rail 4 and a longitudinal slide rail 5. The transverse slide rail 4 is slidably mounted on the longitudinal slide rail 5, and a connecting plate 6 is slidably mounted on the transverse slide rail 4. The connecting plate 6 is connected to the milling machine spindle 7 on the milling machine tool 2. A vacuum suction block 18 for supporting the longitudinal slide rail 5 is fixedly mounted below the longitudinal slide rail 5. A suction block motor 27 is mounted on the vacuum suction block 18, and the suction block motor 27 is connected to a vacuum pump 30 on the vacuum suction block 18. A moving device 21 for driving the base 1 is mounted on the base 1.

[0033] The longitudinal slide rail 5 is welded to the base 1.

[0034] A connecting plate motor 20 is provided on the connecting plate 6, and the connecting plate motor 20 is connected to the connecting plate transmission gear at the bottom of the connecting plate 6.

[0035] The transverse slide rail 4 is equipped with a slide rail motor 32 at its end, and the slide rail motor 32 is connected to the transverse slide rail transmission gear at the bottom of the transverse slide rail 4.

[0036] The milling machine tool 2 includes a milling mechanism 8, an adjustment mechanism 9, a machine tool 33, and a machine tool motor 19. The milling mechanism 8 is fixedly connected to the adjustment mechanism 9, and the adjustment mechanism 9 is fixedly connected to the machine tool 33. The milling machine spindle 7 is located at the bottom of the machine tool 33, and the machine tool motor 19 is located on the machine tool 33. The machine tool motor 19 is connected to the milling machine spindle transmission gear on the milling machine spindle 7.

[0037] The milling mechanism 8 includes a boring bar head 10, a milling machine spindle 11, an L-connecting plate 12, and a motor 13. The boring bar head 10 is fixedly connected to the milling machine spindle 11, and one side of the L-connecting plate 12 is fixedly connected to the milling machine spindle 11, while the other side is connected to the motor 13.

[0038] The adjustment mechanism 9 includes an adjustment shaft 14, a milling machine tool connecting plate 15, an adjustment slide rail 16, and a connecting seat 17. The front end of the connecting seat 17 is fixedly connected to the adjustment slide rail 16. The milling machine tool connecting plate 15 is slidably connected to the adjustment slide rail 16. The milling machine tool connecting plate 15 is fixedly connected to the adjustment shaft 14. The adjustment shaft 14 is fixedly connected to the L-connecting plate 12.

[0039] The mobile device 21 is an electric roller 22, and a roller motor 25 is provided on the base 1. The roller motor 25 is connected to the electric roller transmission gear inside the base 1.

[0040] The base 1 is provided with a guiding auxiliary device 26, which includes a guide wheel 23 and a laser sensor 24. The guide wheel 23 is located at the front end of the base 1, and the laser sensor 24 is located on both sides of the base 1.

[0041] The vacuum suction block 18 includes a suction block 28, a suction block motor 27, an elastic sealing ring 29, a vacuum pump 30, and an annular ring 31. The elastic sealing ring 29 covers the surface of the suction block 28, and the suction block 28 is equipped with a vacuum pump 30 and an annular ring 31 adsorbed on the longitudinal slide rail 5.

[0042] A multi-axis linkage fine deep cavity precision milling machining device is provided by manually pushing the base 1 into the deep cavity; electric rollers 22 driven by roller motors 25 are installed at the four corners of the base 1, which support remote control start and stop and speed adjustment, and the rollers adopt a telescopic structure.

[0043] Push-in stage: The electric rollers 22 extend from the bottom of the base 1 and contact the ground. The roller motor 25 drives the four electric rollers 22 to move simultaneously, so that the device can slide smoothly into the deep cavity. The electric rollers 22 are equipped with a wireless remote control module, which supports manual remote control of pushing in, retracting and emergency stop operations; the integrated positioning program can preset the pushing path to achieve semi-automatic positioning; the electric rollers 22 provide efficient movement capability, and vacuum adsorption after retraction ensures processing accuracy; remote control reduces the risk of manual entry into the deep cavity and improves safety.

[0044] During the processing stage: The electric roller 22 automatically retracts into the base 1 to avoid interference with the vacuum suction block 18, ensuring that the bottom surface of the base 1 is completely in contact with the working surface. After the electric roller 22 retracts, the vacuum suction block 18 at the bottom of the base 1 is activated and adsorbs onto the processing surface, forming a rigid fixation to prevent displacement caused by processing vibration. The position of the vacuum suction block 18 can be finely adjusted along the longitudinal slide rail 5 to adapt to the flatness of the bottom surface of different deep cavities.

[0045] The front end of the base 1 is equipped with a foldable guide wheel 23, which unfolds when entering the deep cavity and contacts the inner wall of the cavity to prevent the device from shifting.

[0046] Laser sensors 24 are installed on both sides of the base 1 to detect the distance between the device and the side wall of the cavity in real time. The roller speed is automatically adjusted through feedback signal to achieve dynamic correction.

[0047] The guide wheel 23, combined with the sensor, solves the problem of travel deviation in narrow spaces.

[0048] The slide rail motor 32 drives the transverse slide rail transmission gear at the bottom of the transverse slide rail 4, causing the transverse slide rail 4 to move. The connecting plate motor 20 drives the connecting plate transmission gear at the bottom of the connecting plate 6, causing the connecting plate 6 to move. The machine tool motor 19 drives the milling machine spindle transmission gear on the milling machine spindle, causing the milling machine tool 2 to move within a transverse +90 degree range. The connecting plate 6 on the transverse slide rail 4 and the transverse slide rail on the longitudinal slide rail 5 are quickly adjusted in direction and position. The operator enters the welding cavity, adjusts the position of the vacuum suction block 18 according to the construction length, and fixes it to support the longitudinal slide rail 5 and keep it horizontal. The operator manually adjusts the adjusting spindle 14 to rotate longitudinally and move it up and down on the adjusting slide rail 16 to find the main rail working surface. After finding the surface, the operator can leave the deep cavity and press the button to start the motor 13 of the milling machine tool 2 to perform straight milling of the first main rail working surface. After the first surface is milled, the operator... The operator re-enters the welding chamber to manually adjust the adjusting shaft 14 and adjusting slide rail 16 to find the second reverse rail working surface and starts the motor 13 to work on the second surface. After milling the second surface, the operator re-enters the welding chamber to adjust the adjusting shaft 14 and adjusting slide rail 16 back to the initial position. The slide rail motor 32 drives the transverse slide rail 4 to the designated position, and the machine tool motor 19 drives the milling machine shaft 7 to rotate the transverse rotation axis -180 degrees. The connecting plate 6 on the transverse slide rail 4 and the transverse slide rail on the longitudinal slide rail 5 are quickly adjusted in direction and position. The operator re-enters the welding chamber to adjust the adjusting shaft 14 to find the third main rail working surface and starts the motor 13 to work on the third surface. After the work is completed, the milling machine 2 stops working, and the machine tool motor 19 drives the milling machine shaft 7 to rotate the milling machine 2 to be parallel to the longitudinal slide rail 5. The slide rail motor drives the transverse slide rail 4 to retract to the end of the longitudinal slide rail 5 and contact the base 1.

[0049] Example 2

[0050] The vacuum suction block 18 is covered with an elastic silicone sealing ring to adapt to the roughness and oily environment of the deep cavity bottom surface. The vacuum suction block 18 is equipped with a vacuum pump and an annular silicone ring, and an auxiliary airbag is set inside the annular silicone ring. The vacuum suction block 18 is embedded in the bottom of the longitudinal slide rail 5 and is driven to move along the slide rail by the slide rail motor 20 to adjust the adsorption position. It supports ±5mm lateral fine adjustment to compensate for the alignment deviation when the precision milling machine is pushed into the deep cavity. The vacuum pump is an oil-free silent vacuum pump with an adjustable adsorption pressure range (-50kPa to -90kPa). The adsorption status is monitored in real time by a pressure sensor on the annular silicone ring. The pressure sensor on the annular silicone ring also integrates a displacement sensor to monitor the adsorption force and the flatness of the base 1 in real time. An alarm is automatically triggered when there is an abnormality. When the vacuum adsorption does not meet the standard, the milling spindle is automatically locked to prevent displacement accidents during the processing.

[0051] The working process of vacuum suction block 18 is as follows:

[0052] Positioning stage: After the device is pushed into the deep cavity by the electric roller 22, the roller retracts and the base 1 descends to the contact surface; the vacuum suction block 18 moves along the longitudinal slide rail 5 to the preset adsorption area according to the feedback of the laser sensor 24 and is controlled by the slide rail motor 20.

[0053] Adsorption stage: The suction block motor 27 on the vacuum suction block 18 drives the vacuum pump 30 to evacuate air from the negative pressure chamber, and the silicone sealing ring is deformed by pressure to fit the bottom surface; the auxiliary airbag is inflated to fill the gap, and after the pressure sensor and displacement sensor confirm that the adsorption force meets the standard, they send a "ready" signal to the control system.

[0054] During processing: The adsorption force maintains the rigidity of the base 1, counteracting the lateral force caused by milling vibration; if a decrease in adsorption force is detected during processing (such as air leakage at the bottom), the system will automatically pause processing and issue an alarm.

[0055] Release stage: After processing is completed, the airbag is vented, the suction block separates from the bottom surface; the electric roller 22 extends, and the device exits the deep cavity.

[0056] The advantages of the vacuum suction block 18 are: rigid fixation, which solves the problem that traditional mechanical clamps cannot be fixed in narrow and deep cavities; uniform suction force distribution, which avoids machining vibration marks.

[0057] The adaptive bottom surface and multi-layer sealing design allow the suction block to adapt to bottom surface unevenness of ±2mm, eliminating the need for manual grinding pretreatment.

[0058] Efficiency is improved, the adsorption / release process is fully automated, and the time for a single cycle is less than 10 seconds, which is 90% more efficient than traditional bolt fixing.

[0059] Safety is guaranteed, and the interlocking mechanism eliminates the risk of "processing before fixing". Abnormal pressure is detected in real time to prevent equipment damage.

Claims

1. A multi-axis linkage precision milling device for fine and deep cavities, characterized in that: The system includes a base (1), a milling machine (2), and a double slide rail system (3). The double slide rail system (3) is mounted on the base (1), and the milling machine (2) is mounted on the double slide rail system (3). The double slide rail system (3) includes a transverse slide rail (4) and a longitudinal slide rail (5). The transverse slide rail (4) is slidably mounted on the longitudinal slide rail (5), and a connecting plate (6) is slidably mounted on the transverse slide rail (4). The connecting plate (6) is connected to the milling machine spindle (7) on the milling machine (2). A vacuum suction block (18) for supporting the longitudinal slide rail (5) is fixedly mounted below the longitudinal slide rail (5). A suction block motor (27) is mounted on the vacuum suction block (18), and the suction block motor (27) is connected to the vacuum pump (30) on the vacuum suction block (18). A moving device (21) for driving the base (1) to move is mounted on the base (1).

2. The multi-axis linkage precision milling device for fine and deep cavities according to claim 1, characterized in that: The longitudinal slide rail (5) is welded to the base (1).

3. A multi-axis linkage precision milling apparatus for fine and deep cavities according to claim 1 or 2, characterized in that: A connecting plate motor (20) is provided on the connecting plate (6), and the connecting plate motor (20) is connected to the connecting plate transmission gear at the bottom of the connecting plate (6).

4. The multi-axis linkage precision milling device for fine and deep cavities according to claim 3, characterized in that: The transverse slide rail (4) is equipped with a slide rail motor (32) at its end, and the slide rail motor (32) is connected to the transverse slide rail transmission gear at the bottom of the transverse slide rail (4).

5. The multi-axis linkage precision milling device for fine and deep cavities according to claim 4, characterized in that: The milling machine tool (2) includes a milling mechanism (8), an adjustment mechanism (9), a machine tool (33), and a machine tool motor (19). The milling mechanism (8) is fixedly connected to the adjustment mechanism (9), and the adjustment mechanism (9) is fixedly connected to the machine tool (33). The milling machine spindle (7) is located at the bottom of the machine tool (33), and the machine tool motor (19) is located on the machine tool (33). The machine tool motor (19) is connected to the milling machine spindle transmission gear on the milling machine spindle (7).

6. The multi-axis linkage precision milling device for fine and deep cavities according to claim 5, characterized in that: The milling mechanism (8) includes a boring bar head (10), a milling machine spindle (11), an L-connecting plate (12), and a motor (13). The boring bar head (10) is fixedly connected to the milling machine spindle (11), and one side of the L-connecting plate (12) is fixedly connected to the milling machine spindle (11), while the other side is connected to the motor (13).

7. A multi-axis linkage precision milling apparatus for fine and deep cavities according to claim 5 or 6, characterized in that: The adjustment mechanism (9) includes an adjustment shaft (14), a milling machine tool connecting plate (15), an adjustment slide rail (16), and a connecting seat (17). The front end of the connecting seat (17) is fixedly connected to the adjustment slide rail (16). The milling machine tool connecting plate (15) is slidably connected to the adjustment slide rail (16). The milling machine tool connecting plate (15) is fixedly connected to the adjustment shaft (14). The adjustment shaft (14) is fixedly connected to the L connecting plate (12).

8. The multi-axis linkage precision milling device for fine and deep cavities according to claim 7, characterized in that: The mobile device (21) is an electric roller (22), and a roller motor (25) is provided on the base (1). The roller motor (25) is connected to the electric roller transmission gear inside the base (1).

9. A multi-axis linkage precision milling apparatus for fine and deep cavities according to claim 4, 5, 6, or 8, characterized in that: The base (1) is provided with a guiding auxiliary device (26), which includes a guide wheel (23) and a laser sensor (24). The guide wheel (23) is located at the front end of the base (1), and the laser sensor (24) is located on both sides of the base (1).

10. A multi-axis linkage precision milling apparatus for fine and deep cavities according to claim 9, characterized in that: The vacuum suction block (18) includes a suction block (28), a suction block motor (27), an elastic sealing ring (29), a vacuum pump (30), and an annular ring (31). The elastic sealing ring (29) covers the surface of the suction block (28), and the suction block (28) is provided with a vacuum pump (30) and an annular ring (31) adsorbed on the longitudinal slide rail (5).

Images