A precision mechanical footing cutting device

Abstract

The application discloses a precision mechanical foot cutting machining device and relates to the technical field of mechanical cutting machining.The precision mechanical foot cutting machining device comprises an outer cover, a foot, a cover cap rotatably installed on the outer cover, a cutting assembly installed in the outer cover and a locking assembly.The cutting assembly comprises a moving slide rail, a driver, a driving shaft and a milling cutter.The moving slide rail is located in the outer cover, the moving slide rail drives the driver to move horizontally, and the driver drives the driving shaft and the milling cutter to rotate.The precision mechanical foot cutting machining device has the following advantages: the foot is precisely positioned initially by a resisting plate, a resisting spring and a magnetic plate, and is suitable for various specifications of feet;the clamp chuck is synchronously clamped by adopting a bevel gear linkage structure to resist lateral force;the angle of the inclined plane is precisely adjusted by innovatively adopting a double-wire-rod driving cooperation wedge block structure;centrifugal force is offset and vibration is reduced by adopting a hydraulic cylinder linkage and a centering ball counterweight;and each component cooperatively forms a closed loop, so that the precision mechanical foot cutting machining device is convenient to operate, high in efficiency, and capable of balancing machining precision and cost control.

Description

Technical Field

[0001] This invention relates to the field of mechanical cutting and machining technology, and in particular to a precision mechanical foot cutting and machining device. Background Technology

[0002] Footings are core support components for various precision machine tools and instruments. Their machining accuracy directly determines the levelness, stability, and operational accuracy of the equipment after installation. Cutting is the core process for achieving the dimensional accuracy, surface quality, and geometric tolerance requirements of precision machine footings. During the cutting process of key parts such as planes, inclined planes, and positioning holes, it is necessary to strictly control machining errors, surface vibration marks, and dimensional consistency. This places extremely high demands on the cutting stability of precision machine footing cutting devices.

[0003] Currently, existing precision mechanical foot cutting processing devices generally suffer from poor cutting stability in practical applications. This problem directly leads to insufficient machining accuracy, unqualified surface quality, and poor batch processing consistency, seriously affecting the installation accuracy and operational reliability of subsequent equipment. It also increases scrap rate and processing costs, making it difficult to meet the development needs of the precision machinery industry. Therefore, CN114248115A discloses a metal cutting machine tool for precision parts processing of automated machinery, which includes a cutting mechanism for tapping and cutting precision parts. The cutting mechanism includes a tapping module and at least one cutting module. Both the tapping module and the cutting module are equipped with nozzles and a three-axis moving module for driving the tapping module and the cutting module to move in the X, Y, and Z directions to accurately process the precision parts.

[0004] The aforementioned automated precision metal cutting machine tool, by incorporating a machine base, waste collection mechanism, boss, and circulation mechanism, eliminates the need for a separate processing station and complex piping layout compared to conventional media handling methods. The circulation and waste collection mechanisms are integrated into the machine base, ensuring that blockages do not affect the processing efficiency of other machine bases. This makes it more convenient to use, effectively reducing manpower and financial expenditures, achieving economic benefits, and possessing broad application prospects. The cutting structure is driven by a three-axis moving module, and a protective plate shields the tapping wheel and cutting head, preventing oil and metal debris from splashing onto the idle tapping wheel or cutting head. The protective plate is driven by an electric telescopic rod, ensuring automated control and guaranteeing processing efficiency.

[0005] However, while the aforementioned automated precision metal cutting machine tools address the issues of high cutting medium handling costs and pipeline blockage affecting processing efficiency through integrated circulation and waste collection mechanisms, they do not specifically address the core causes of poor cutting stability and thus fail to fundamentally solve the stability problem during precision machining. Specifically, the clamping mechanism in this prior art only achieves basic workpiece fixation, lacking anti-lateral slippage and self-cleaning structures. It cannot resist lateral forces during machining and cannot prevent positioning deviations caused by residual metal chips. Furthermore, its feed mechanism lacks optimized transmission structure, leaving insufficient rigidity and resulting in feed vibration. Additionally, the prior art lacks a dedicated shock absorption structure, failing to effectively attenuate cutting vibrations and making it unsuitable for the high-precision, high-stability machining requirements of precision machinery.

[0006] Therefore, a new type of precision mechanical foot cutting and machining device can be used to overcome the shortcomings of the existing technology. Summary of the Invention

[0007] The purpose of this invention is to solve the problems existing in the prior art by proposing a precision mechanical foot cutting and machining device.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A precision mechanical foot cutting and machining device includes an outer cover, a foot, and a cover rotatably mounted on the outer cover, as well as a cutting assembly and a locking assembly installed inside the outer cover;

[0010] The cutting assembly includes a sliding rail, a driver, a drive shaft, and a milling cutter. The sliding rail is located inside the outer casing. The sliding rail drives the driver to move horizontally, and the driver drives the drive shaft and the milling cutter to rotate.

[0011] The locking assembly consists of a rotating seat fixedly mounted on a movable slide rail, a drive electrical device that cooperates with the rotating seat fixedly mounted on the movable slide rail, a drive seat fixedly mounted on the rotating seat, and a clamping mechanism fixedly mounted on the drive end of the drive seat.

[0012] The clamping mechanism consists of a base, a clamping structure, an auxiliary positioning structure, an angle adjustment structure, and a self-aligning structure. The clamping structure is used to clamp the feet, the auxiliary positioning structure is used to initially position the feet, the angle adjustment structure is installed between the base and the clamping structure to change the angle of the clamping structure, and the self-aligning structure is used to adjust the centrifugal force when the clamping structure rotates.

[0013] Preferably, a cutter head storage assembly is installed inside the outer cover for storing different types of milling cutters. A dust collection assembly is installed inside the outer cover and extends outside the outer cover for cleaning up the chips generated during cutting. A control assembly is installed outside the outer cover to control the milling cutters to perform automatic cutting through a set program.

[0014] Preferably, a cooling fan is rotatably mounted on the driver, and the cooling fan is always directed toward the milling cutter.

[0015] Preferably, the clamping structure includes a cylindrical body rotatably mounted on a base via a rotating shaft, a plurality of chucks slidably mounted on the cylindrical body, a plurality of staggered teeth fixedly mounted at the bottom of each chuck, a gear rail rotatably mounted inside the cylindrical body that engages with the plurality of staggered teeth, and a plurality of bevel gears rotatably mounted on the cylindrical body that mesh with the gear rail.

[0016] Preferably, the auxiliary positioning structure includes a positioning rod fixedly installed at the center of the cylinder, a ball rotatably mounted on the positioning rod, a positioning disk fixedly mounted on the ball, a plurality of abutment plates that cooperate with the foot being slidably mounted on the positioning disk, a compression spring fixedly mounted between each abutment plate and the positioning disk, and a plurality of magnetic plates fixedly mounted on the positioning disk.

[0017] Preferably, the angle adjustment structure includes a first wedge block fixedly installed on the cylinder, a second wedge block slidably installed on the first wedge block, a connecting plate rotatably installed on the second wedge block, and a drive module that cooperates with the connecting plate installed on the base.

[0018] Preferably, the drive module includes two lead screws rotatably mounted on the base, each lead screw having two nuts threadedly mounted on it. The two nuts on the same lead screw are fixedly connected to the corresponding connecting plate. A motor is fixedly mounted on the base, and the motor is driven by the two lead screws through a gear set.

[0019] Preferably, the second wedge is fixedly equipped with a plurality of U-shaped limiting clips, and the first wedge is provided with a U-shaped limiting groove.

[0020] Preferably, the self-aligning structure includes two arc-shaped hydraulic cylinders fixedly installed on the base, two straight hydraulic cylinders fixedly installed at the bottom of the cylinder, the telescopic ends of the two arc-shaped hydraulic cylinders being fixedly connected to the cylinder, and the two arc-shaped hydraulic cylinders being connected to the corresponding straight hydraulic cylinders through a guide pipe, and a counterweight module cooperating with the straight hydraulic cylinders being installed at the bottom of the cylinder.

[0021] Preferably, the counterweight module includes two sliding rods slidably mounted on the bottom of the cylinder, each of the two sliding rods having a self-aligning ball fixedly mounted on it. Both self-aligning balls are located outside the cylinder, and the telescopic ends of the two straight cylinder hydraulic cylinders are fixedly connected to the corresponding sliding rods.

[0022] Compared with existing technologies, the advantages of this invention are:

[0023] 1. This precision mechanical foot cutting and machining device achieves initial positioning of the foot through an auxiliary positioning structure. The abutment plate is inserted into the threaded hole of the foot, and the pressure spring automatically fits and positions the foot. The magnetic plate is attracted and fixed to prevent displacement. It can be adapted to foot with threaded holes of different specifications, effectively solving the problems of large positioning deviation and poor adaptability of traditional methods. This lays the foundation for the stability of subsequent cutting and improves the machining accuracy.

[0024] 2. This precision mechanical foot cutting and machining device adopts a bevel gear, gear rail and staggered tooth linkage structure to drive multiple chucks to move synchronously, realize all-round clamping of the foot, uniform clamping force, effectively resist the lateral component force of cutting, avoid foot displacement and deflection during cutting, reduce vibration interference, ensure the quality of the cutting surface and reduce scrap rate.

[0025] 3. This precision mechanical foot cutting and machining device innovatively adopts a double lead screw drive design. The motor drives the double lead screws to rotate synchronously through the gear set, which drives the nut and the connecting plate to work together. In conjunction with the wedge block structure, the cylinder is pushed to rotate around the rotation axis. The angle adjustment is smooth and without jamming. Compared with a single lead screw, it effectively avoids adjustment deviation and improves the accuracy of the inclined cutting angle.

[0026] 4. This precision mechanical foot cutting and machining device addresses the issue of center of gravity shift after the cylinder angle changes. It uses a combination of arc-shaped and straight-cylinder hydraulic cylinders to distribute fluid and a self-aligning ball to move the counterweight, automatically adjusting the center of gravity balance. This effectively counteracts the eccentric centrifugal force generated by high-speed rotation, reduces cutting vibration, protects the lead screw, extends its service life, and ensures long-term stability of angle adjustment accuracy.

[0027] 5. The components of this precision mechanical foot cutting and machining device work together to form a complete closed loop from positioning, clamping, angle adjustment to vibration control. It is easy to operate, requires no frequent manual adjustments, and can achieve efficient cutting of foot planes to inclined planes. It is suitable for batch processing scenarios, takes into account both processing accuracy and efficiency, and reduces labor and equipment wear and tear costs. Attached Figure Description

[0028] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of a precision mechanical foot cutting and machining device proposed in this invention;

[0030] Figure 2 for Figure 1 Detailed schematic diagram of the structure after rotation at a certain angle;

[0031] Figure 3 for Figure 1 Detailed schematic diagram of the structure after the cover is opened;

[0032] Figure 4 for Figure 2 Detailed schematic diagram of the structure after removing part of the outer cover;

[0033] Figure 5 for Figure 4 Enlarged schematic diagram of the cutting assembly, locking assembly, and moving slide rail;

[0034] Figure 6 for Figure 5 A detailed enlarged structural diagram of the cutting assembly after it has been rotated a certain angle.

[0035] Figure 7 for Figure 5 Detailed enlarged structural diagram of the locking assembly;

[0036] Figure 8 for Figure 7 Enlarged schematic diagram of the clamping mechanism;

[0037] Figure 9 for Figure 8 Detailed schematic diagram of the planar structure from the front view;

[0038] Figure 10 for Figure 8 Detailed schematic diagram of the top-down planar structure;

[0039] Figure 11 for Figure 8 Detailed schematic diagram of the structure after removing the base plate;

[0040] Figure 12 for Figure 11 Detailed structural diagram after a portion of the cylinder has been cut open;

[0041] Figure 13 for Figure 11 Detailed schematic diagram of the disassembled cylinder and base;

[0042] Figure 14 for Figure 13 Detailed schematic diagram of the structure after rotation at a certain angle;

[0043] Figure 15 for Figure 12 Enlarged schematic diagram of the auxiliary positioning structure;

[0044] Figure 16 for Figure 13Enlarged structural schematic diagram of the base and other components on the base;

[0045] Figure 17 for Figure 16 Detailed schematic diagram of the structure after removing the base;

[0046] Figure 18 for Figure 17 Detailed schematic diagram of the enlarged structure of the motor, angle adjustment structure, and drive module;

[0047] Figure 19 for Figure 18 Detailed schematic diagram of the frontal planar structure;

[0048] Figure 20 for Figure 19 Detailed schematic diagram of the structure after the first and second wedges are separated.

[0049] In the diagram: 1 Outer cover, 2 Dust collection assembly, 3 Cutter head storage assembly, 4 Control assembly, 5 Cover, 6 Cutting assembly, 7 Locking assembly, 8 Moving slide rail, 9 Driver, 10 Cooling fan, 11 Drive shaft, 12 End mill, 13 Rotary seat, 14 Clamping mechanism, 15 Drive seat, 16 Foot, 17 Base, 18 Cylinder, 19 Motor, 20 Chuck, 21 Auxiliary positioning structure, 22 Bevel gear, 23 Gear rail, 24 Alternating gears, 25 Positioning rod, 26 Ball, 27 Positioning disc, 28 Support plate, 29 Magnetic plate, 30 Rotating shaft, 31 Angle adjustment structure, 32 Self-aligning structure, 33 Arc hydraulic cylinder, 34 Guide tube, 35 Straight cylinder hydraulic cylinder, 36 Self-aligning ball, 37 Lead screw, 38 First wedge, 39 Second wedge, 40 Nut, 41 Connecting plate. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example 1: Refer to Figures 1-6 A precision mechanical foot cutting processing device includes an outer cover 1, a foot 16, and a cover 5 rotatably mounted on the outer cover 1, and also includes a cutting assembly 6 and a locking assembly 7 installed inside the outer cover 1.

[0052] The outer cover 1 serves as the protective and installation carrier for the entire device. It is made of Q235 steel plate and is stamped as a whole with a thickness of 8-10mm. An installation chamber is reserved inside for integrating various functional components. The exterior is treated with powder coating to prevent rust and impact.

[0053] The cover 5 is rotatably connected to the outer cover 1 via a hinge. A sealing strip is provided on the inner side of the cover 5. When closed, it can seal the inside of the outer cover 1 to prevent iron filings and cutting fluid from splashing during the cutting process. At the same time, it is convenient for operators to open the cover 5 to clamp the workpiece, change the tool and maintain the equipment. The structure achieves a balance between protection and ease of operation.

[0054] The cutting assembly 6 includes a sliding rail 8, a driver 9, a drive shaft 11, and a milling cutter 12. The sliding rail 8 is located inside the outer cover 1. The sliding rail 8 drives the driver 9 to move horizontally, and the driver 9 drives the drive shaft 11 and the milling cutter 12 to rotate.

[0055] The movable slide rail 8 adopts a combination structure of linear guide rail and ball screw. The linear guide rail is a high-precision ball guide rail, and the guide rail spacing is precisely matched with the bottom mounting size of the driver 9. The ball screw is linked with the servo motor (since this is existing technology, it has not been described in detail).

[0056] The driver 9 uses a high-frequency asynchronous motor with a rated power of 3-5kW and an adjustable speed range of 0-6000r / min. Its output shaft is connected to the drive shaft 11 through a flexible coupling. The flexible coupling can buffer the instantaneous impact force during the driving process, reduce the transmission of vibration of the high-frequency asynchronous motor to the drive shaft 11, and prevent the drive shaft 11 from bending and deforming.

[0057] The end mill 12 is a carbide coated end mill with a rounded edge design and a coating thickness of 3-5μm, which can effectively improve the wear resistance and cutting efficiency of the end mill 12, reduce the cutting force during the cutting process, and reduce the machining error caused by the wear of the end mill 12.

[0058] The outer cover 1 is equipped with a cutter head storage component 3 for storing different types of milling cutters 12. The outer cover 1 is equipped with a dust collection component 2 that extends out of the outer cover 1 for cleaning up the chips generated during cutting. The outer cover 1 is equipped with a control component 4 that controls the milling cutter 12 to perform automatic cutting through a set program.

[0059] The cutter head storage assembly 3 includes a storage box, a cutter holder, and a positioning pin. The storage box is fixedly installed on the inner side wall of the outer cover 1. It is equipped with multiple cutter holders that are compatible with different models of milling cutters 12. The positioning pin is installed in the cutter holder and cooperates with the positioning hole on the cutter holder of the milling cutter 12 to achieve precise positioning and storage of the milling cutter 12. This avoids the cutting edge from bumping and the cutter holder from deforming during the storage of the milling cutter 12. It can realize the centralized storage of multiple models of milling cutters 12, which facilitates the quick replacement of milling cutters 12, adapts to the cutting needs of different specifications of foot 16, reduces the time for changing milling cutters 12, and improves processing efficiency.

[0060] The dust collection component 2 includes a dust collection fan, a dust collection pipe, and a dust collection port. The dust collection port is installed above the milling cutter 12 and is aligned with the cutting area. The dust collection fan draws the iron filings and dust generated during cutting into the dust collection box (extending outside the outer cover 1) through the dust collection pipe. The dust collection fan generates negative pressure to form a directional airflow, which can quickly remove the iron filings from the cutting area, preventing iron filings from remaining on the machining surface or positioning surface of the foot 16, preventing machining scratches and positioning deviations caused by iron filings, and improving the machining environment while reducing the impact of dust on operators and equipment.

[0061] The control component 4 includes a PLC controller, a touch screen, and control buttons. The PLC controller has a built-in preset machining program and sets parameters such as the milling cutter 12 speed, the feed speed of the moving slide rail 8, and the cutting depth. The touch screen is used for parameter setting and machining status display. The control buttons are used for emergency stop, manual operation, etc., to realize automated control of cutting machining, reduce manual intervention, avoid human operation errors, and flexibly adjust parameters according to the machining requirements of different feet 16. It has strong adaptability and is easy to operate.

[0062] A cooling fan 10 is rotatably mounted on the driver 9, and the cooling fan 10 is always facing the milling cutter 12;

[0063] The cooling fan 10 is a small axial fan with a rated voltage of 24V. It is fixedly mounted on the side of the driver 9 by a bracket. The shaft that allows it to rotate is linked to the output shaft of the driver 9 by a synchronous belt. When the milling cutter 12 rotates, the cooling fan 10 rotates synchronously. There is no need to set up an additional drive motor, which simplifies the structure and reduces energy consumption.

[0064] During high-speed cutting, the milling cutter 12 generates a large amount of heat. The accumulation of heat will cause the cutting edge of the milling cutter 12 to soften and wear faster. At the same time, it will cause thermal deformation of the machined surface of the foot 16, affecting the machining accuracy. The cooling fan 10 continuously blows air towards the milling cutter 12 to form forced convection, which can quickly remove the heat from the milling cutter 12 and the cutting area, keeping the temperature of the milling cutter 12 below 200℃, avoiding cutting edge softening and workpiece thermal deformation, extending the service life of the milling cutter 12, and ensuring the stability of the machining accuracy of the foot 16.

[0065] Example 2: This example differs from Example 1 in that: (Refer to...) Figures 7-20 The locking assembly 7 consists of a rotating seat 13 fixedly mounted on a movable slide rail 8. A drive electrical device that cooperates with the rotating seat 13 is fixedly mounted on the movable slide rail 8. A drive seat 15 is fixedly mounted on the rotating seat 13. A clamping mechanism 14 is fixedly mounted on the drive end of the drive seat 15.

[0066] The rotating seat 13 is integrally cast from ductile iron. The bottom is fixedly connected to the moving slide rail 8 by bolts. The internal bearing is matched with the output shaft of the drive electrical appliance. The drive electrical appliance adopts a servo motor, which drives the rotating seat 13 to rotate around its own axis through gear transmission. The rotation angle is adjustable from -30° to 30°, and the positioning accuracy can reach ±0.1°.

[0067] The rotation of the rotating seat 13 can drive the clamping mechanism 14 and the foot 16 to rotate synchronously, and together with the milling cutter 12, the foot 16 can be cut at different angles. There is no need to re-clamp the workpiece, reducing clamping errors and improving processing efficiency.

[0068] The drive seat 15 is driven by a servo motor, and its drive end is fixedly connected to the clamping mechanism 14. It can drive the clamping mechanism 14 to rotate around the axis of the drive seat 15, and cooperate with the milling cutter 12 to perform cutting operations.

[0069] The clamping mechanism 14 consists of a base 17, a clamping structure, an auxiliary positioning structure 21, an angle adjustment structure 31, and a self-aligning structure 32. The clamping structure is used to clamp the foot 16, the auxiliary positioning structure 21 is used to initially position the foot 16, the angle adjustment structure 31 is installed between the base 17 and the clamping structure to change the angle of the clamping structure, and the self-aligning structure 32 is used to adjust the centrifugal force when the clamping structure rotates.

[0070] The base 17 is made of gray cast iron and has internal reinforcing ribs to improve structural rigidity. The bottom is fixedly connected to the telescopic end of the drive seat 15, and the top is provided with a mounting groove for installing the clamping structure, angle adjustment structure 31 and self-aligning structure 32. It has high rigidity and can withstand the cutting reaction force during the cutting process, avoiding machining deviation caused by deformation of the base 17. At the same time, it provides a stable mounting reference for each component and ensures the accuracy of the coordinated operation of each component.

[0071] The clamping structure includes a cylindrical body 18 rotatably mounted on a base 17 via a rotating shaft 30. Multiple chucks 20 are slidably mounted on the cylindrical body 18. Multiple staggered teeth 24 are fixedly mounted on the bottom of each chuck 20. A gear rail 23 that engages with the multiple staggered teeth 24 is rotatably mounted inside the cylindrical body 18. Multiple bevel gears 22 that mesh with the gear rail 23 are rotatably mounted on the cylindrical body 18.

[0072] The cylinder 18 is precision machined from No. 45 steel and has a cylindrical structure. Multiple sliding grooves are evenly arranged on the side wall, which cooperate with the sliding protrusions of the chuck 20 to ensure smooth sliding of the chuck 20.

[0073] The rotating shaft 30 is made of alloy steel and is connected to the base 17 at both ends by bearings. Its axis coincides with the axis of the cylinder 18, ensuring that the cylinder 18 rotates smoothly around the rotating shaft 30 with a circular runout error ≤0.003mm.

[0074] The chuck 20 is made of wear-resistant alloy material, with an arc-shaped clamping surface at the end to conform to the side profile of the foot 16. The clamping surface is covered with an anti-slip and wear-resistant pad to increase friction and prevent damage to the surface of the foot 16. The staggered teeth 24 and the gear rail 23 are meshed with involute gears, with the meshing gap controlled at 0.01-0.02mm. The bevel gear 22 meshes with the gear rail 23 for transmission, with a transmission ratio of 1:2. When the operator rotates the bevel gear 22, it can drive the gear rail 23 to rotate synchronously. The gear rail 23 drives multiple chucks 20 to move synchronously along the sliding groove of the cylinder 18 through the staggered teeth 24, so as to achieve all-round clamping of the foot 16.

[0075] The synchronous movement of multiple chucks 20 ensures that the clamping force is evenly distributed on the side of the foot 16, avoiding stress concentration caused by clamping on one side and preventing deformation of the foot 16. In addition, it can avoid impact and vibration during gear transmission, ensuring stable clamping force. At the same time, it can effectively resist the lateral component force generated during cutting, prevent the foot 16 from shifting or deflecting, and ensure cutting stability.

[0076] The auxiliary positioning structure 21 includes a positioning rod 25 fixedly installed at the center of the cylinder 18, a ball 26 rotatably installed on the positioning rod 25, a positioning disk 27 fixedly installed on the ball 26, a plurality of abutment plates 28 that cooperate with the foot 16 slidably installed on the positioning disk 27, a pressure spring fixedly installed between each abutment plate 28 and the positioning disk 27, and a plurality of magnetic plates 29 fixedly installed on the positioning disk 27;

[0077] The positioning rod 25 is made of solid alloy steel and is vertically fixed at the center of the cylinder 18, serving as the installation reference for the auxiliary positioning structure 21.

[0078] The ball 26 is made of stainless steel and is rotatably connected to the positioning rod 25 via a bearing, allowing it to rotate freely 360°. It can automatically adjust the posture of the positioning plate 27 according to the placement angle of the foot 16, ensuring that the abutment plate 28 is precisely aligned with the threaded hole of the foot 16, thus improving positioning flexibility.

[0079] The positioning plate 27 has a circular structure with multiple sliding holes evenly distributed on its surface. It slides in conjunction with the support plate 28. The support plate 28 has a cylindrical structure with a chamfered top to facilitate insertion into the threaded hole of the foot 16. The bottom is connected to a compression spring with an elastic coefficient of 5-8 N / mm. In its natural state, the spring pushes the support plate 28 out of the surface of the positioning plate 27. After it is inserted into the threaded hole of the foot 16, the spring generates an elastic restoring force, which makes the support plate 28 fit tightly against the inner wall of the threaded hole, thus achieving the initial positioning of the foot 16.

[0080] The magnetic plate 29 is made of strong magnetic material and is fixedly installed on the upper surface of the positioning plate 27. It adheres to the bottom of the foot 16. From the perspective of physical principle, magnetic adsorption can generate a uniform adsorption force, which tightly adheres the bottom of the foot 16 to the positioning plate 27, avoiding gaps at the bottom of the foot 16. At the same time, in conjunction with the positioning function of the abutment plate 28, it realizes bidirectional positioning of the foot 16, preventing the foot 16 from shifting during initial positioning, and laying the foundation for subsequent precise clamping.

[0081] In addition, the elasticity of the compression spring can be adapted to the threaded holes of the foot 16 with different diameters, and the adsorption of the magnetic plate 29 can be adapted to the foot 16 with different sizes, thereby improving the adaptability of the auxiliary positioning structure 21 and solving the problems of poor adaptability and large positioning deviation of the traditional positioning structure.

[0082] The angle adjustment structure 31 includes a first wedge 38 fixedly installed on the cylinder 18, a second wedge 39 slidably installed on the first wedge 38, a connecting plate 41 rotatably installed on the second wedge 39, a drive module that cooperates with the connecting plate 41 installed on the base 17, the drive module includes two lead screws 37 rotatably installed on the base 17, two nuts 40 threadedly installed on each of the two lead screws 37, the two nuts 40 located on the same lead screw 37 are fixedly connected to the corresponding connecting plate 41, and a motor 19 is fixedly installed on the base 17, the motor 19 and the two lead screws 37 are driven by a gear set;

[0083] Both the first wedge 38 and the second wedge 39 are made of cemented carbide, and the contact surfaces are precision ground with a surface roughness Ra≤0.8μm. The inclined angle of the first wedge 38 is 30-45°, which fits precisely with the inclined surface of the second wedge 39. The wedge structure can convert the horizontal driving force into the vertical force, which has the advantages of saving effort and smooth transmission. The cylinder 18 can be rotated around the rotating shaft 30 with a small driving force to achieve angle adjustment.

[0084] A connecting plate 41 is rotatably mounted on the second wedge 39. The connecting plate 41 is connected by a hinge, which allows for relative rotation between the second wedge 39 and the connecting plate 41. This avoids jamming during angle adjustment and ensures smooth angle adjustment.

[0085] In the drive module, two lead screws 37 are precision ball screws, which are installed in parallel on the base 17. The two ends of the lead screws 37 are fixed by bearings. The motor 19 is a servo motor, which is linked with the two lead screws 37 through a gear set to realize the synchronous rotation of the two lead screws 37. Compared with the single lead screw 37 drive, the two lead screws 37 drive can make the connecting plate 41 bear the force evenly, avoiding the bending and deformation of the lead screw 37 caused by the unilateral force generated by the single lead screw 37 drive. At the same time, it improves the stability and accuracy of angle adjustment, and the angle adjustment accuracy can reach ±0.01°.

[0086] Nut 40 is precisely fitted with lead screw 37 with a fit clearance ≤0.005mm. Nut 40 is fixedly connected to connecting plate 41. When lead screw 37 rotates, it drives nut 40 to move horizontally, which in turn drives second wedge 39 to move through connecting plate 41. Second wedge 39 and first wedge 38 press against each other, pushing cylinder 18 to rotate around rotating shaft 30, thereby adjusting the angle of clamping structure and meeting the cutting requirements of plane to inclined plane of foot 16.

[0087] Multiple U-shaped limiting clips are fixedly installed on the second wedge 39, and a U-shaped limiting groove is opened on the first wedge 38. The limiting clips and the limiting groove are precisely matched with each other, using a clearance fit method with a fit clearance of 0.01-0.02mm. The U-shaped structure can realize bidirectional limiting between the second wedge 39 and the first wedge 38, preventing the second wedge 39 from falling off the first wedge 38 during the angle adjustment process. At the same time, it restricts the movement direction of the second wedge 39, ensuring that the second wedge 39 slides along the limiting groove, avoiding angle adjustment deviation caused by offset, improving the stability and reliability of the angle adjustment structure 31, and preventing machining errors caused by wedge displacement during the cutting process.

[0088] The self-aligning structure 32 includes two arc-shaped hydraulic cylinders 33 fixedly installed on the base 17, and two straight hydraulic cylinders 35 fixedly installed at the bottom of the cylinder 18. The telescopic ends of the two arc-shaped hydraulic cylinders 33 are fixedly connected to the cylinder 18, and the two arc-shaped hydraulic cylinders 33 and the corresponding straight hydraulic cylinders 35 are connected through a guide pipe 34. A counterweight module that cooperates with the straight hydraulic cylinders 35 is installed at the bottom of the cylinder 18. The counterweight module includes two sliding rods that are slidably installed at the bottom of the cylinder 18. A self-aligning ball 36 is fixedly installed on each of the two sliding rods. The two self-aligning balls 36 are located outside the cylinder 18. The telescopic ends of the two straight hydraulic cylinders 35 are fixedly connected to the corresponding sliding rods.

[0089] The arc-shaped hydraulic cylinder 33 adopts an arc-shaped structure, which is adapted to the rotation trajectory of the cylinder 18. It is filled with hydraulic oil, and the telescopic end is connected to the bottom of the cylinder 18 through a hinge, so it can extend and retract with the rotation of the cylinder 18.

[0090] The straight hydraulic cylinder 35 is vertically installed at the bottom of the cylinder 18 and is connected to the arc-shaped hydraulic cylinder 33 through the liquid guide pipe 34 to form a closed hydraulic circuit. The liquid guide pipe 34 is a high-pressure hose, which can adapt to the angle change of the cylinder 18 and avoid pipeline breakage.

[0091] The self-aligning ball 36 is made of high-density alloy steel and is fixedly installed at the end of the slide rod. The slide rod is matched with the sliding hole at the bottom of the cylinder 18 and can slide horizontally.

[0092] When the cylinder 18 rotates around the rotating shaft 30 to change the angle, the cylinder 18 will press the arc-shaped hydraulic cylinder 33 on one side, causing the hydraulic oil inside to flow into the corresponding straight cylinder 35 through the guide pipe 34. The hydraulic oil in the straight cylinder 35 increases, and the weight increases, while the hydraulic oil in the arc-shaped hydraulic cylinder 33 on the other side decreases, and the weight decreases. Through this transfer of hydraulic oil, the weight balance on both sides of the cylinder 18 is achieved, and the center of gravity is initially adjusted.

[0093] At the same time, the extension end of the straight cylinder hydraulic cylinder 35 extends, pushing the slide rod to move the self-aligning ball 36, increasing the distance between the self-aligning ball 36 and the rotating shaft 30. According to the centrifugal force formula F=mv² / r, the increased distance between the self-aligning balls 36 can increase the counterweight torque, counteract the eccentric centrifugal force generated by the high-speed rotation of the cylinder 18, and reduce vibration.

[0094] This dual self-aligning counterweight structure can adapt to the angle changes of the cylinder 18 in real time, automatically adjust the center of gravity balance, avoid vibration caused by center of gravity shift, reduce the impact force of vibration on the lead screw 37, extend the service life of the lead screw 37, ensure long-term stability of angle adjustment accuracy, and solve the problems of center of gravity shift and severe vibration after angle adjustment in traditional devices.

[0095] The specific operating steps of this device are as follows:

[0096] The operator opens the cover 5 of the outer casing 1, starts the equipment through the control component 4, performs initialization tests, and confirms that all components such as the moving slide rail 8, driver 9, motor 19, dust collection component 2, and cooling fan 10 are operating normally. The operator checks whether the milling cutter 12 is securely installed and the condition of the cutter wear. If the milling cutter 12 is severely worn, a new milling cutter 12 of suitable fit is taken out from the cutter head storage component 3 for replacement. After replacement, it is fixed by the positioning pin to ensure that the coaxiality of the milling cutter 12 meets the requirements. At the same time, the operator checks whether the components of the clamping mechanism 14 are flexible and whether the hydraulic circuit of the self-aligning structure 32 is well sealed and free of oil leakage.

[0097] The foot 16 to be processed is placed between the chucks 20 of the cylinder 18, so that the abutment plate 28 of the auxiliary positioning structure 21 is aligned with the threaded hole on the upper part of the foot 16. The pressure spring pushes the abutment plate 28 into the threaded hole to achieve the initial positioning of the foot 16. At the same time, the magnetic plate 29 on the positioning plate 27 adheres to the bottom of the foot 16, further fixing the foot 16 and preventing the foot 16 from shifting during the initial positioning stage. If the foot 16 has different specifications, the abutment plate 28 can adaptively adjust its extension length under the action of the pressure spring. The adsorption force of the magnetic plate 29 can be adapted to different sizes of foot 16 to ensure accurate initial positioning.

[0098] The operator rotates the bevel gear 22 on the cylinder 18, which drives the internal gear rail 23 to rotate synchronously. The gear rail 23 meshes with the staggered teeth 24 at the bottom of the chuck 20, causing multiple chucks 20 to move synchronously towards the center along the sliding groove of the cylinder 18 until the arc-shaped clamping surface of the chuck 20 is tightly attached to the side of the foot 16. During the clamping process, it is ensured that the clamping force is uniform. The clamping force can be monitored by the control component 4 to avoid excessive clamping force that could damage the surface of the foot 16, or insufficient clamping force that could not resist the lateral cutting force. After clamping is completed, the positioning of the foot 16 is checked again to ensure that it is secure and has not shifted, so as to ensure that it meets the cutting requirements.

[0099] According to the angle requirements of the inclined cutting of the foot 16, the angle parameters are set by the control component 4, and the motor 19 is started. The motor 19 drives the two lead screws 37 to rotate synchronously through the gear set. When the lead screws 37 rotate, they drive the nut 40 to move horizontally. The nut 40 drives the connecting plate 41 to move synchronously. The connecting plate 41 drives the second wedge 39 to slide along the inclined surface of the first wedge 38. Under the pressure of the second wedge 39 and the first wedge 38, the cylinder 18 rotates around the rotating shaft 30 until the set inclined surface angle is reached. During the angle adjustment process, the second wedge 39 and the connecting plate 41 can rotate relative to each other to avoid jamming. The limit card and the limit groove cooperate to ensure accurate angle adjustment without deviation. At the same time, when the angle of the cylinder 18 changes, it will compress the arc-shaped hydraulic cylinder 33 on one side. The hydraulic oil inside flows into the corresponding straight cylinder hydraulic cylinder 35 through the guide pipe 34. The extension end of the straight cylinder hydraulic cylinder 35 extends, pushing the slide rod to drive the self-aligning ball 36 to move, automatically adjusting the center of gravity balance to ensure the stability of the cylinder 18.

[0100] The cutting parameters, including the milling cutter 12 speed, the feed speed of the moving slide rail 8, and the cutting depth, are set by the control component 4. The parameters are adjusted reasonably according to the material and size of the foot 16 to ensure a smooth and efficient cutting process.

[0101] After the parameters are set, the cover 5 of the outer cover 1 is closed, and the cutting process is started through the control component 4. The moving slide rail 8 drives the driver 9 to move horizontally, so that the milling cutter 12 is aligned with the cutting area at the bottom of the foot 16. The driver 9 drives the drive shaft 11 and the milling cutter 12 to rotate at high speed to cut the bottom of the foot 16. At the same time, the cooling fan 10 rotates synchronously to cool the milling cutter 12 and the cutting area. The dust collection component 2 is activated to suck the iron filings and dust generated by cutting into the dust collection box through the dust collection port to avoid iron filings residue. The drive seat 15 drives the clamping mechanism 14 and the foot 16 to move up and down according to the cutting requirements to adjust the cutting depth. The rotating seat 13 drives the clamping mechanism 14 and the foot 16 to rotate, so as to achieve all-round cutting of the inclined surface at the bottom of the foot 16 in conjunction with the milling cutter 12. During the cutting process, the self-aligning structure 32 adjusts the center of gravity in real time to counteract the eccentric centrifugal force, reduce vibration, and ensure cutting stability.

[0102] During the cutting process, the processing status is observed through the touch screen of the control component 4. If abnormal conditions such as excessive vibration or abnormal cutting noise occur, the emergency stop button is pressed immediately. The self-aligning structure 32, clamping mechanism 14 and other components are checked, and the parameters are adjusted before restarting the processing. After the processing is completed, the equipment stops automatically. The operator opens the cover 5 and checks the angle, flatness, surface roughness and other indicators of the inclined surface of the foot 16. If they do not meet the requirements, the angle parameters and cutting parameters are readjusted and a second cutting is performed.

[0103] After passing the inspection, rotate the bevel gear 22 in the reverse direction to move the chuck 20 outward, release the clamp on the foot 16, and take out the machined foot 16; start the dust collection component 2 to clean the clamping mechanism 14, the milling cutter 12 and the inside of the outer cover 1 to remove residual iron filings; organize and store the machined foot 16. If the next batch of foot 16 needs to be machined, repeat the above steps.

[0104] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A precision mechanical foot cutting and machining device, comprising an outer cover (1), a foot (16), and a cover (5) rotatably mounted on the outer cover (1), characterized in that, It also includes a cutting assembly (6) installed inside the outer casing (1) and a locking assembly (7); The cutting assembly (6) includes a sliding rail (8), a driver (9), a drive shaft (11), and a milling cutter (12). The sliding rail (8) is located inside the outer cover (1). The sliding rail (8) drives the driver (9) to move horizontally. The driver (9) drives the drive shaft (11) and the milling cutter (12) to rotate. The locking assembly (7) consists of a rotating seat (13) fixedly mounted on a movable slide rail (8). A drive electrical device that cooperates with the rotating seat (13) is fixedly mounted on the movable slide rail (8). A drive seat (15) is fixedly mounted on the rotating seat (13). A clamping mechanism (14) is fixedly mounted on the drive end of the drive seat (15). The clamping mechanism (14) consists of a base (17), a clamping structure, an auxiliary positioning structure (21), an angle adjustment structure (31), and a self-aligning structure (32). The clamping structure is used to clamp the foot (16). The clamping structure includes a cylindrical body (18) that is rotatably mounted on the base (17) via a rotating shaft (30). The auxiliary positioning structure (21) is used to initially position the foot (16). The auxiliary positioning structure (21) includes a positioning rod (25) fixedly mounted at the center of the cylindrical body (18). A ball (26) is rotatably mounted on the positioning rod (25). A positioning disk (27) is fixedly mounted on the ball (26). Multiple abutments (28) that cooperate with the foot (16) are slidably mounted on the positioning disk (27). A pressure spring is fixedly mounted between each abutment (28) and the positioning disk (27). Multiple magnetic plates (29) are fixedly mounted on the positioning disk (27). An angle adjustment structure (31) is installed between the base (17) and the clamping structure to change the angle of the clamping structure. The angle adjustment structure (31) includes a first wedge (38) fixedly installed on the cylinder (18). The self-aligning structure (32) is used to adjust the centrifugal force when the clamping structure rotates. The self-aligning structure (32) includes two arc-shaped hydraulic cylinders (33) fixedly installed on the base (17). Two straight cylinder hydraulic cylinders (35) are fixedly installed at the bottom of the cylinder (18). The telescopic ends of the two arc-shaped hydraulic cylinders (33) are fixedly connected to the cylinder (18), and the two arc-shaped hydraulic cylinders (33) are connected to the corresponding straight cylinder hydraulic cylinders (35) through a liquid guide pipe (34). A counterweight module that cooperates with the straight cylinder hydraulic cylinder (35) is installed at the bottom of the cylinder (18).

2. The precision machine tool cutting and machining device according to claim 1, characterized in that, The outer cover (1) is equipped with a tool storage assembly (3) for storing different types of milling cutters (12). The outer cover (1) is equipped with a dust collection assembly (2) which extends out of the outer cover (1) to clean up the chips generated during cutting. The outer cover (1) is equipped with a control assembly (4) which controls the milling cutter (12) to perform automatic cutting by setting a program.

3. The precision mechanical foot cutting and machining device according to claim 1, characterized in that, A cooling fan (10) is rotatably mounted on the driver (9), and the cooling fan (10) is always facing the milling cutter (12).

4. The precision machine tool foundation cutting and machining device according to claim 1, characterized in that, Multiple chucks (20) are slidably mounted on the cylinder (18), and multiple staggered teeth (24) are fixedly mounted on the bottom of each chuck (20). A gear rail (23) that cooperates with the multiple staggered teeth (24) is rotatably mounted inside the cylinder (18), and multiple bevel gears (22) that mesh with the gear rail (23) are rotatably mounted on the cylinder (18).

5. The precision machining device for machined machine feet according to claim 1, characterized in that, A second wedge (39) is slidably mounted on the first wedge (38), and a connecting plate (41) is rotatably mounted on the second wedge (39). A drive module that cooperates with the connecting plate (41) is mounted on the base (17).

6. The precision machine tool foundation cutting and machining device according to claim 5, characterized in that, The drive module includes two lead screws (37) rotatably mounted on the base (17). Each lead screw (37) has two nuts (40) threadedly mounted on it. The two nuts (40) on the same lead screw (37) are fixedly connected to the corresponding connecting plate (41). A motor (19) is fixedly mounted on the base (17). The motor (19) is driven by the two lead screws (37) through a gear set.

7. The precision machining apparatus for machined machine feet according to claim 5, characterized in that, The second wedge (39) is fixedly equipped with multiple convex-shaped limit cards, and the first wedge (38) is provided with a convex-shaped limit groove.

8. The precision machine tool cutting and machining device according to claim 1, characterized in that, The counterweight module includes two sliding rods that are slidably installed at the bottom of the cylinder (18). Each of the two sliding rods has a self-aligning ball (36) fixedly installed on it. Both self-aligning balls (36) are located outside the cylinder (18). The telescopic ends of the two straight cylinder hydraulic cylinders (35) are fixedly connected to the corresponding sliding rods.

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