A water jet four-axis cutting head running device

Abstract

The utility model discloses a water -jet cutter four -axis cutting head operating device relates to cutting water -jet cutter technical field, including the protective housing, the inside fixed mounting of protective housing has servo motor and speed reducer, the inside movable mounting of protective housing has the main shaft connecting seat, the inside fixed connection of protective housing has the guide sliding block, the bottom movable mounting of protective housing has four -axis cutter bar. This application is through setting up main shaft rotating bearing, main shaft connecting seat, guide sliding block and cutter bar bearing etc. parts, uses the mode of outer ring fixed of main shaft rotating bearing to main shaft, inner ring movement, is directly driven main shaft connecting seat by servo motor, like this guarantees the strength of structure, guarantees the precision of C -axis rotation, through the cooperation of main shaft rotating bearing and cutter bar bearing, guarantees C -axis when rotating, cutter bar does not rotate with it, guarantees the angle of cutting high -pressure water and workpiece cutting surface always perpendicular to the moving tangent direction, improves the cutting quality of workpiece.

Description

Technical Field

[0001] This utility model relates to the field of waterjet cutting technology, specifically a waterjet four-axis cutting head operating device. Background Technology

[0002] A four-axis waterjet cutter uses high-pressure water as a cutting tool to cut materials. Its cutting machine adds a rotary axis C to the cutting head of a standard three-axis machine tool. Under system control, the bevel cutting head moves along the normal direction of the cut, ensuring the cut is perpendicular to the top and bottom surfaces of the workpiece, achieving positive and negative bevels. Equipped with three linear coordinate axes (X, Y, Z) and one C-axis rotary axis, under CNC system control, the four-axis waterjet nozzle, after yaw, follows the direction of the cut, eliminating the bevel during cutting and enabling the cutting of nicks within a certain range.

[0003] Due to the unique properties of waterjet cutting, the kerf is V-shaped, resulting in a non-perpendicular cut surface that affects the cutting quality, making it difficult to meet the standards for workpieces requiring perpendicularity. This led to the invention of 5-axis cutting. However, the manufacturing cost of 5-axis cutting heads is high, and the required cutting software is even more expensive. For some individual users, or for workpieces where only the bevel needs to be eliminated, using 5-axis cutting results in high procurement and operating costs. Therefore, we provide a four-axis cutting head device, which, together with four-axis cutting software, has been widely used in steel blanking, stone mosaic, and other cutting operations where only the bevel needs to be eliminated or increased. Utility Model Content

[0004] The purpose of this invention is to provide a waterjet four-axis cutting head operating device to solve the problems raised in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waterjet four-axis cutting head operating device, comprising a protective shell, a servo motor and a reducer fixedly installed inside the protective shell, a spindle connecting seat rotatably installed at the bottom end of the protective shell, a guide slider fixedly connected inside the spindle connecting seat, a four-axis tool holder movably installed inside the spindle connecting seat, a tool holder fixing seat installed inside the spindle connecting seat, two angle adjustment screws threaded to the outside of the spindle connecting seat, a spindle rotary bearing installed inside the protective shell, and the spindle connecting seat adapted to the spindle rotary bearing.

[0006] Preferably, a spindle bearing mounting seat is fixedly installed inside the protective housing, and a tool holder bearing is installed inside the spindle connecting seat. The tool holder bearing is adapted to the four-axis tool holder and serves to fix the four-axis tool holder.

[0007] Preferably, a cutting abrasive tube clamping sleeve is installed at the bottom end of the four-axis cutter bar, and a gemstone nozzle is fixedly installed inside the four-axis cutter bar. The gemstone nozzle increases water pressure and improves cutting speed.

[0008] Preferably, a four-axis mixing chamber is fixedly installed inside the four-axis cutter bar, a cutting sand tube is fixedly installed at the bottom end of the sand tube clamping sleeve, and a locking nut is threadedly connected to the outer surface of the four-axis cutter bar. The locking nut facilitates the disassembly and replacement of the cutting sand tube by the operator.

[0009] Preferably, a four-axis Z-axis connecting plate is fixedly connected to the outer surface of the protective housing, an air valve is fixedly installed on the outside of the protective housing, and a four-axis coil is provided on the outside of the protective housing. The two ends of the four-axis coil are fixedly connected to the air valve and the four-axis mixing chamber, respectively. The air valve is used to control the flow rate of high-pressure water.

[0010] Preferably, a CNC device is fixedly installed on the outside of the protective shell, a support rail is provided on the outside of the protective shell, and a sliding block is slidably connected inside the support rail. The sliding block has the effect of changing the position of the water jet assembly.

[0011] Preferably, a screw is rotatably installed inside the support rail, the screw passes through the sliding block and is threadedly connected to the sliding block, a limit block is fixedly connected to the bottom surface of the sliding block, an L-shaped connecting plate is fixedly connected to the top surface of the sliding block, and the end of the L-shaped connecting plate is fixedly connected to the CNC device. The limit block plays a role in improving the sliding stability of the sliding block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This application incorporates components such as a spindle rotary bearing, spindle connecting seat, guide slider, and tool holder bearing. The spindle is fixed on the outer ring by the spindle rotary bearing, while the inner ring moves. A servo motor directly drives the spindle connecting seat, ensuring both structural strength and C-axis rotation accuracy. The arc fit between the spindle connecting seat and the guide slider ensures that the cutting intersection point remains at the center of the arc regardless of angle adjustments. The cooperation between the spindle rotary bearing and the tool holder bearing ensures that the tool holder does not rotate during C-axis rotation, guaranteeing that the angle between the high-pressure water and the workpiece cutting surface remains perpendicular to the tangential direction, thus improving workpiece cutting quality.

[0014] 2. This application, by setting up components such as guide sliders, angle adjustment screws, four-axis mixing chambers, and four-axis coils, facilitates the adjustment of the cutter bar angle by the operator, ensures the smooth flow of high-pressure water, and effectively improves the cutting accuracy of the waterjet. In general waterjet cutting applications, it can completely replace five-axis waterjet cutting, greatly reducing processing and operating costs. In the processing of complex parts, it does not require frequent switching of A and B axis movements or coordination of A and B axes, thus improving both speed and accuracy during the cutting process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the protective shell of this utility model;

[0018] Figure 4 This is a schematic diagram of the four-axis mixing cavity structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the speed reducer structure of this utility model.

[0020] Numbering on the map:

[0021] 1. Protective housing; 2. Servo motor; 3. Reducer; 4. Spindle connecting seat; 5. Guide slider; 6. Four-axis tool holder; 7. Tool holder fixing seat; 8. Incline adjustment screw; 9. Spindle rotary bearing; 10. Spindle bearing fixing seat; 11. Tool holder bearing; 12. Cutting abrasive tube clamping sleeve; 13. Gemstone nozzle; 14. Four-axis mixing chamber; 15. Cutting abrasive tube; 16. Locking nut; 17. Four-axis head Z-axis connecting plate; 18. Air valve; 19. Four-axis coil; 20. CNC device; 21. Support rail; 22. Sliding block; 23. Screw; 24. Limit block; 25. L-shaped connecting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a technical solution for a waterjet four-axis cutting head operating device.

[0024] Please see Figure 1 , Figure 2 and Figure 4 The device includes a protective housing 1, which protects and supports the components installed inside, preventing dust and other impurities from entering the device and ensuring its normal operation. The structural diagrams of the components shown in the accompanying drawings are illustrative examples. The specific implementation should be adapted and optimized based on the functional requirements, assembly conditions and process limitations in the actual application scenario, including structural parameters, dimensions and connection methods.

[0025] Please see Figure 1 , Figure 2 and Figure 3 A CNC device 20 is fixedly installed on the outside of the protective shell 1. The CNC device 20 can be used to control the operation of the water jet, so that the water jet can operate according to different cutting requirements. All other electrical components in the CNC device 20 are existing technologies, and their working principles and installation methods will not be described in detail in this application.

[0026] The protective shell 1 is provided with a support rail 21 on the outside. A sliding block 22 is slidably connected inside the support rail 21. A screw 23 is rotatably installed inside the support rail 21. The screw 23 passes through the sliding block 22 and is threadedly connected to the sliding block 22. A drive device is installed at one end of the screw 23. When the drive device drives the screw 23 to rotate, the screw 23 can drive the sliding block 22 to slide inside the support rail 21 through the thread, thereby driving the water jet to move as a whole, which facilitates the water jet to perform cutting operations.

[0027] The bottom surface of the sliding block 22 is fixedly connected to the limiting block 24, and the top surface of the sliding block 22 is fixedly connected to the L-shaped connecting plate 25. The end of the L-shaped connecting plate 25 is fixedly connected to the CNC device 20. The movement of the sliding block 22 can drive the CNC device 20 and the cutting assembly to move through the L-shaped connecting plate 25. The inner bottom wall of the support rail 21 is provided with a groove that matches the limiting block 24. Both the limiting block 24 and the groove are T-shaped designs, which can ensure that the sliding block 22 slides stably inside the support rail 21 and improve the operational stability of waterjet cutting.

[0028] Please see Figure 4 and Figure 5 The protective housing 1 has a servo motor 2 and a reducer 3 fixedly installed inside. The servo motor 2 is used to drive the C-axis to rotate, which facilitates the control of the cutting head to move in a specific direction and ensures that the cut is perpendicular to the top and bottom surfaces of the workpiece. The reducer 3 is used to adjust the speed of the motor, which allows the device to adjust the cutting speed according to different cutting materials, thereby improving the accuracy of the cutting operation. In the processing of complex parts, this device does not need to frequently switch between A and B axis movements, nor does it require the A and B axis to coordinate. This improves both speed and accuracy during the cutting process.

[0029] A spindle connecting seat 4 is rotatably mounted on the bottom of the protective housing 1. A spindle rotary bearing 9 is installed inside the protective housing 1. The spindle connecting seat 4 and the spindle rotary bearing 9 are compatible. The spindle connecting seat 4 provides space and support for the installation of the C-axis motor and the deflection device. The spindle rotary bearing 9 can provide limit and support for the rotation of the C-axis. The spindle rotary bearing 9 serves to connect the protective housing 1 and the spindle connecting seat 4, reducing the wear caused by the rotation between the two and extending the service life of the device. Bushings are installed on both the inner and outer surfaces of the spindle rotary bearing 9.

[0030] The spindle connecting seat 4 is internally fixed with a guide slider 5, which has a semi-circular arc design. When the tool bar is deflected, the focus of the high-pressure water sprayed on the workpiece is always on the center of the arc of the guide slider. This ensures that no matter how the angle is adjusted, the cutting intersection point is always on the center of the arc. The spindle connecting seat 4 and the guide slider 5 have a matching arc design. When the angle adjustment screw 8 is rotated, its end will push the spindle connecting seat 4 along the guide slider 5 through the tool bar fixing seat 7, thereby causing the tool bar to deflect at a certain angle to meet the cutting requirements of the parts. This allows the device to operate in the machining of complex parts without frequent switching of A and B axis movements or A and B axis coordination, thus improving the cutting speed and accuracy of the device.

[0031] A four-axis tool holder 6 is movably mounted inside the spindle connecting seat 4. A tool holder fixing seat 7 is also installed inside the spindle connecting seat 4. A tool holder bearing 11 is installed inside the spindle connecting seat 4. The tool holder bearing 11 is adapted to the four-axis tool holder 6. The four-axis tool holder 6 is used for high-pressure water inlet, and its length is used to compensate for the radius R value. The tool holder fixing seat 7 is used to fix the tool holder bearing 11. The tool holder bearing 11 is used to fix the four-axis tool holder 6 and ensure the stability of the tool holder during cutting operations. Through the cooperation of the spindle rotary bearing 9 and the tool holder bearing 11, it is ensured that the tool holder does not rotate when the C-axis rotates, and that the angle between the cutting high-pressure water and the workpiece cutting surface is always perpendicular to the direction of the motion tangent. Inner and outer spacers are installed on the inner and outer sides of the tool holder bearing 11 to fix the tool holder and reduce wear between the bearing and the tool holder.

[0032] The external threaded connection of the spindle connector 4 has two angle adjustment screws 8. The angle adjustment screws 8 make it convenient for the operator to adjust the tilt angle of the tool holder, which solves the problem of high processing cost and inconvenience of adjustment of the 5-axis cutting head, and reduces the processing cost and use cost of cutting operations.

[0033] The spindle bearing mounting seat 10 is fixedly installed inside the protective housing 1. The bottom end of the four-axis tool holder 6 is fixedly installed with a cutting sand tube clamping sleeve 12. The spindle bearing mounting seat 10 is used to install the spindle rotary bearing 9. Its top end has an end cap that can press the spindle bearing. The cutting sand tube clamping sleeve 12 is used to fix and install the cutting sand tube 15, making it convenient for workers to disassemble and repair the sand tube.

[0034] The four-axis tool holder 6 has a four-axis mixing chamber 14 fixedly installed inside. The four-axis mixing chamber 14 is fixedly connected to the end of the four-axis coil 19 through a coil connector. There is a sand inlet hole on the side of the mixing chamber. When water flows through the mixing chamber at high speed, a negative pressure of 0.2MPa is generated inside the wall, which draws in the sand. After mixing, the sand is sprayed out together with the high-pressure water in the cutting nozzle to cut the workpiece.

[0035] The four-axis cutter bar 6 has a gemstone nozzle 13 fixedly installed inside, and a cutting abrasive tube 15 fixedly installed at the bottom end of the cutting abrasive tube clamping sleeve 12. A locking nut 16 is threadedly connected to the outer surface of the four-axis cutter bar 6. The gemstone nozzle 13 is used for high-pressure water storage to enhance the strength of waterjet cutting. The cutting abrasive tube 15 can use high-pressure water to cut parts. The locking nut 16 can be used to fix the cutting abrasive tube 15, making it convenient for workers to install, remove and replace the cutting abrasive tube 15, and preventing the cutting abrasive tube 15 from being worn out after long-term use, which would affect the accuracy of the cutting operation.

[0036] The outer surface of the protective housing 1 is fixedly connected to a four-axis head Z-axis connecting plate 17. An air valve 18 is fixedly installed on the outside of the protective housing 1. A four-axis coil 19 is provided on the outside of the protective housing 1. The two ends of the four-axis coil 19 are fixedly connected to the air valve 18 and the four-axis mixing chamber 14, respectively. The four-axis head Z-axis connecting plate 17 is used to connect and fix the cutting head device between the four-axis head and the Z-axis. The air valve 18 is used to control the opening and closing of the high-pressure water. The air valve 18 is connected to an external water pump through a high-pressure water pipe, which can provide sufficient water for the water jet cutting operation. The four-axis coil 19 is used for high-pressure water output.

[0037] Working principle: To eliminate the angle, the angle adjustment screw 8 is rotated according to the cutting requirements of the part. The rotation of the angle adjustment screw 8 can push the spindle connecting seat 4 to deflect along the guide slider 5 by a specified angle through the tool holder fixing seat 7. Since the curvature of the guide slider 5 matches the length of the four-axis tool holder 6, when the high-pressure water sprayed from the cutting abrasive pipe 15 cuts the workpiece, the cutting trajectory on the surface of the workpiece will be at the same point as the center of the curvature of the guide slider 5. Therefore, no matter how much the angle is adjusted, the cutting trajectory remains unchanged. During the cutting motion, the C-axis rotation cooperates with the CNC device 20 to keep the angle between the cutting high-pressure water and the workpiece cutting surface perpendicular to the direction of the motion tangent, ensuring the perpendicularity of the workpiece cutting surface and improving the cutting quality of the workpiece.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A water jet four-axis cutting head running device, characterized in that: The protective housing (1) is characterized in that: a servo motor (2) and a reducer (3) are fixedly installed inside the protective housing (1); a spindle connecting seat (4) is rotatably installed at the bottom end of the protective housing (1); a guide slider (5) is fixedly connected inside the spindle connecting seat (4); a four-axis tool holder (6) is movably installed inside the spindle connecting seat (4); a tool holder fixing seat (7) is installed inside the spindle connecting seat (4); two angle adjustment screws (8) are threaded to the outside of the spindle connecting seat (4); a spindle rotary bearing (9) is installed inside the protective housing (1); and the spindle connecting seat (4) is adapted to the spindle rotary bearing (9).

2. The water jet four-axis cutting head operating device according to claim 1, characterized in that: The protective housing (1) is equipped with a spindle bearing mounting seat (10), and the spindle connecting seat (4) is equipped with a tool holder bearing (11). The tool holder bearing (11) is compatible with the four-axis tool holder (6).

3. The water jet four-axis cutting head operating device according to claim 1, characterized in that: The bottom end of the four-axis cutter bar (6) is fixedly installed with a cutting sand tube clamping sleeve (12), and the inside of the four-axis cutter bar (6) is fixedly installed with a gemstone nozzle (13).

4. The water jet four-axis cutting head operating device according to claim 3, characterized in that: The four-axis tool holder (6) has a four-axis mixing chamber (14) fixedly installed inside, and a cutting sand tube (15) is fixedly installed at the bottom end of the cutting sand tube clamping sleeve (12). A locking nut (16) is threadedly connected to the outer surface of the four-axis tool holder (6).

5. The water jet four-axis cutting head operating device according to claim 4, characterized in that: The outer surface of the protective housing (1) is fixedly connected to a four-axis head Z-axis connecting plate (17), and an air valve (18) is fixedly installed on the outside of the protective housing (1). A four-axis coil (19) is provided on the outside of the protective housing (1). The two ends of the four-axis coil (19) are fixedly connected to the air valve (18) and the four-axis mixing chamber (14) respectively.

6. The water jet four-axis cutting head operating device of claim 1, wherein: A CNC device (20) is fixedly installed on the outside of the protective shell (1), and a support rail (21) is provided on the outside of the protective shell (1). A sliding block (22) is slidably connected inside the support rail (21).

7. The water jet four-axis cutting head operating device according to claim 6, characterized in that: The support rail (21) is rotatably mounted with a screw (23), which passes through the sliding block (22) and is threadedly connected to the sliding block (22). The bottom surface of the sliding block (22) is fixedly connected to a limit block (24), and the top surface of the sliding block (22) is fixedly connected to an L-shaped connecting plate (25). The end of the L-shaped connecting plate (25) is fixedly connected to the CNC device (20).

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