Adjustable groove milling device for special-shaped hardware

Abstract

The invention relates to the technical field of machining equipment, in particular to a special-shaped hardware adjustable groove milling device which comprises an equipment base, a milling tool equipment frame and a supporting base. And the milling tool equipment frame is provided with a groove milling tool capable of transversely moving in a lifting manner. The supporting base is arranged on a displacement track of an equipment base in a sliding mode, a plurality of supporting supports capable of rotating independently are installed on the supporting base, and each supporting support is provided with a fixing supporting frame capable of being adjusted in a lifting mode and used for clamping workpieces. The angle adjustment of the supporting bracket and the height adjustment of the fixed supporting frame are mutually and independently decoupled on a mechanical structure. The device is further provided with a control system which can automatically calculate and control the height adjusting mechanism or the groove milling device to carry out corresponding coordinate compensation movement according to the angle change of the supporting bracket. According to the device, through physical decoupling and logic linkage of angle and height adjustment, self-adaptive precise clamping and machining of complex special-shaped workpieces are achieved, and uniformity of machining standards and machining precision are effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, specifically an adjustable milling device for irregularly shaped hardware parts. Background Technology

[0002] In metalworking, milling grooves on irregularly shaped workpieces (such as parts with irregular curved surfaces or multi-angled slopes) has always been a challenge. Traditional fixtures are typically fixed and can only accommodate workpieces with specific angles, resulting in poor versatility. When machining grooves with different inclination angles, it is necessary to replace or redesign and manufacture special fixtures, which is costly, time-consuming, and lacks flexibility. Even with some adjustable fixtures, adjustments are mostly made manually and roughly, making it difficult to ensure that multiple support points are coordinated. The adjustment process is cumbersome, and the positioning accuracy is low, failing to meet the requirements of high-precision milling. Furthermore, after adjusting the workpiece posture, existing equipment often requires tool resetting and resetting machining coordinates, a complex process that is prone to human error, affecting machining accuracy and efficiency. Therefore, there is an urgent need for a milling device that can flexibly, accurately, and adaptively support and fix irregularly shaped workpieces, and intelligently maintain the machining reference. Summary of the Invention

[0003] The purpose of this invention is to provide an adjustable milling device for irregularly shaped hardware parts to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: An adjustable milling device for irregularly shaped hardware parts includes an equipment base, a milling tool frame mounted on the equipment base, and a support base set on the working platform of the equipment base. The milling tool frame is equipped with a milling tool that can move laterally and vertically. The working platform is equipped with a displacement track, and the support base is slidably installed on the displacement track; The support base includes a sliding bottom support plate and a driven bottom support plate slidably disposed on a displacement track, and a main support frame and an auxiliary support frame respectively installed on the two; Several support brackets are rotatably installed between the main support frame and the auxiliary support frame, and each support bracket is provided with a fixed support frame for supporting and fixing the workpiece. The main support frame is equipped with an angle adjustment drive mechanism for independently driving the corresponding support bracket to swing around its rotation axis. Each support bracket is equipped with a height adjustment mechanism for independently driving the fixed support frame on it to move up and down. The rotation axis of the angle adjustment drive mechanism is spatially decoupled from the lifting and lowering direction of the height adjustment mechanism, and each is provided with an independent locking component; The device also includes a control system configured to automatically control the height adjustment mechanism and the milling tool to perform coordinate compensation movements based on the angle of the support bracket adjusted by the angle adjustment drive mechanism.

[0005] As a further aspect of the present invention: a plurality of sliding blocks are provided at the bottom of the support base, and rolling wheels that cooperate with the displacement track are mounted on the sliding blocks via mounting shafts.

[0006] As a further embodiment of the present invention: a fixing plate is provided on the plate of the main support frame; A support bearing is provided in the end frame of the support bracket, and the shaft of the support bearing is supported on the fixed plate and locked in place by a locking knob. The auxiliary support frame is provided with a support portion that is identical to the structure of the fixed plate.

[0007] As a further embodiment of the present invention: the angle adjustment drive mechanism includes: The drive mounting plate is located at the bottom of the main support frame; A swing wheel is mounted on the drive mounting plate via a fixed support member, and the swing wheel is driven by a swing motor located inside the main support frame; An integrated swing arm is mounted on the side edge of the swing wheel; A transmission link connecting the swing arm and the swing shaft end of the support bearing.

[0008] As a further embodiment of the present invention: the height adjustment mechanism includes: A height fine-tuner is installed on the center base plate in the middle of the support frame; The side wing bases are symmetrically arranged at both ends of the support frame, and each side wing base is equipped with a lifting slide rod; The top of the height fine adjuster and the top of the lifting slide rod together support the fixed support frame.

[0009] As a further embodiment of the present invention: the bottom plate of the fixed support frame is sleeved and fixed to the top of the lifting slide rod; The side wing base includes a base body, and the base body is provided with: A screw fine adjuster, the output end of which is connected to a sliding limit block, and the lifting slide rod passes through the limit rod opening of the sliding limit block; A plurality of positioning holes are arranged vertically, and the sliding limiting block can be selectively locked and fixed at any of the positioning holes by means of a locking bolt.

[0010] As a further embodiment of the present invention: the milling machine frame includes: Horizontal support column; A lateral displacement module installed on the horizontal support; A lifting frame mounting plate that is slidably installed on the lateral displacement module; The lifting and pushing frame includes a lifting module fixed to the lifting frame mounting plate, and a tool mounting base driven by the lifting module for mounting the milling tool.

[0011] As a further embodiment of the present invention: the fixed support frame is provided with end clamps at both ends, and the side edges of the end clamps are provided with side edge locking members.

[0012] As a further embodiment of the present invention: a plurality of clamping seats are provided on the mounting surface of the fixed support frame, and an upper pressure plate and a lower clamping plate that can cooperate with each other to clamp the workpiece are installed on the clamping seats.

[0013] As a further aspect of the present invention, the adjustment process executed by the control system is configured as follows: first, drive the support bracket to swing to a set angle and lock it, and then control the height adjustment mechanism to make the fixed support frame fit against the lower surface of the workpiece.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This device abandons the traditional fixed or single-degree-of-freedom fixture approach. By designing multiple independently adjustable angle and height support units, it achieves adaptive fitting and stable clamping of complex curved workpiece contours. The angular rotation and height adjustment movements of the support units are completely decoupled mechanically, each with its own independent drive and locking mechanisms, ensuring that the adjustment process does not interfere with each other and remains stable. Simultaneously, the integrated control system automatically calculates precise compensation amounts for the support height or milling cutter feed based on angle change parameters. Thus, based on the separation of physical adjustments, intelligent algorithms maintain the origin of the machining coordinate system at the logical level. This design optimizes the operation process into a standardized procedure of first uniformly setting the support angle and then finely adjusting the height of each point, significantly improving clamping efficiency and accuracy.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Furthermore, these drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the adjustable milling device for irregularly shaped hardware provided in an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the installation of the support base and support bracket provided in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the milling machine frame provided in an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the sliding block provided in an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the rotating part of the support bracket provided in an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the installation of the fixed support frame and the support bracket provided in an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of the side wing base provided in an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the fixed support frame provided in an embodiment of the present invention.

[0025] In the diagram: 1. Equipment base; 11. Working platform; 12. Displacement track; 2. Milling tool frame; 21. Fixed base; 22. Horizontal support; 23. Lateral displacement module; 24. Lifting frame mounting plate; 3. Lifting and pushing frame; 31. Mounting frame plate; 32. Lifting module; 33. Lifting slide plate; 34. Tool mounting seat; 4. Milling tool; 5. Support base; 51. Sliding bottom support plate; 52. Main support base; 521. Fixed plate; 522. Support bearing; 523. Locking knob; 53. Driven bottom support plate; 54. Auxiliary support base; 55. Sliding block; 56. Mounting shaft; 57. Rolling wheel; 6. Support bracket; 61. Center base plate; 62. Height fine adjuster; 63. Side wing base; 631. Base body; 632. Screw fine adjuster; 633. Sliding limit block; 634. Limiting rod opening; 635. Locking bolt; 636. Positioning hole; 64. Lifting slide bar; 7. Fixed support frame; 71. End clamping plate; 72. Side edge locking piece; 73. Clamping seat; 74. Top connector; 75. Side connector; 76. Upper pressure plate; 77. Lower clamping plate; 81. Drive mounting plate; 82. Fixed support piece; 83. Swing wheel; 84. Swing arm; 85. Transmission connecting rod; 86. Shaft end connector. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, examples of which are illustrated in the drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or identical elements.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] Example 1; please refer to Figures 1 to 7 This embodiment provides an adjustable milling device for irregularly shaped hardware parts. The device is installed within a relevant machining workstation, and its core function is to solve the clamping problem during milling of irregularly shaped hardware parts. The main body of the device is a robust equipment base 1, typically made of cast iron or welded steel structure, with its top precision-machined to form a flat working platform 11. On the upper surface of the working platform 11, two raised displacement rails 12 are installed or machined parallel to each other along its length. These two rails provide precise longitudinal guiding references for the subsequent movement of the support base.

[0030] At one end of the platform of the equipment base 1, typically near the operator or at a location determined according to the process flow, a tall milling machine frame 2 is mounted using bolts and locating pins. The bottom of the milling machine frame 2 is securely connected via a fixed base 21 with an expanded contact area to prevent vibration during machining. The top frame of the milling machine frame 2 extends forward, forming a support structure above the work area. A high-precision lateral displacement module 23 is mounted on this frame; this module can be a combination of a ball screw pair and a linear guide, or a precision gear and rack mechanism. A rigid lifting frame mounting plate 24 is connected to the guide rail of the lateral displacement module 23 via a slider, enabling it to move precisely and smoothly along the X-axis direction (i.e., the horizontal direction perpendicular to the length of the equipment base 1). A mounting plate 31 is vertically fixed to the front of the lifting frame mounting plate 24, and a lifting module 32, such as a servo electric cylinder or a ball screw lifting mechanism driven by a servo motor, is mounted on the mounting plate 31. A lifting slide plate 33 is connected to the mover (such as a nut or piston rod) of the lifting module 32. Finally, the milling tool 4, which performs the machining task, is mounted on this lifting slide plate 33 through a dedicated tool mounting base 34. In this way, the milling tool 4 has the ability to perform CNC motion in two linear directions, the X-axis (lateral) and the Z-axis (vertical), laying the foundation for machining two-dimensional contours or three-dimensional grooves.

[0031] Another core module of the device is the support base 5. It serves as an independent, movable workpiece clamping platform, mounted on the work platform 11 and located within the machining stroke range of the milling tool 4. Multiple sliding blocks 55 are welded or bolted to the bottom of the support base 5. Each sliding block 55 is equipped with four rolling wheels 57 via two parallel mounting shafts 56. These rolling wheels 57 sit in pairs on two displacement tracks 12, much like the relationship between train wheels and rails. This design allows the entire support base 5 to slide smoothly along the Y-axis (i.e., along the length of the displacement track 12) with minimal force, facilitating the operator to adjust the longitudinal position of the workpiece according to machining needs, or to perform segmented relocation machining when processing long workpieces.

[0032] The support base 5 mainly consists of a sliding bottom support plate 51, a driven bottom support plate 53, a main support frame 52, and an auxiliary support frame 54. The sliding bottom support plate 51 and the driven bottom support plate 53 are two parallel plates with sufficient rigidity, their bottoms fixedly connected to the aforementioned sliding block 55. The main support frame 52 is vertically and firmly installed at the center of the upper surface of the sliding bottom support plate 51. Similarly, the auxiliary support frame 54 is vertically installed at the center of the upper surface of the driven bottom support plate 53 in the same manner. The main support frame 52 and the auxiliary support frame 54 stand opposite each other, forming a space between them for installing multiple support brackets 6.

[0033] The support brackets 6 are the core components that directly support and adjust the workpiece's posture. Their specific number is determined based on the workpiece's length and rigidity requirements. Each support bracket 6 is a rectangular or I-shaped frame structure, made of aluminum alloy or steel to reduce weight and ensure rigidity. One end of each support bracket 6 (the end closest to the main support frame 52) is connected via a set of rotating support units. Specifically, on the side plate of the main support frame 52, corresponding to the position of each support bracket 6, a fixing plate 521 is machined or installed. The fixing plate 521 has precision bearing seats. A deep groove ball bearing or tapered roller bearing is pressed into the frame at the corresponding end of each support bracket 6 as a support bearing 522. Its inner ring is interference-fitted with a horizontally placed short shaft, the two ends of which extend out of the frame. One end (outer end) of this short shaft is inserted into the bearing seat of the fixing plate 521, forming a rotating support; the other end (inner end) can be machined into a square shape or have a keyway for subsequent possible angle driving or indication. A screw with a locking knob 523, fitted with a handle, is screwed into the main support frame 52 from the side. Its tip abuts against the journal of the support bearing 522, generating significant friction upon tightening, thus firmly locking the angle of the support bracket 6 in its current position. The other end of the support bracket 6 (near the auxiliary support frame 54) employs a similar but potentially simpler structure to provide a swivel bearing, such as a single bearing support. Its primary function is to provide auxiliary support and allow rotation; the locking function can be simplified or omitted, as the locking at one end of the main support frame 52 is sufficient to fix the angle. In this way, each support bracket 6 can independently swing about a horizontal axis along the Y-axis, thereby changing the tilt angle of its top surface to simulate different slopes on the lower surface of the workpiece.

[0034] In order to further finely adjust the height and level of the top surface (i.e., fixed support frame 7) of each support bracket 6 after the angle is set, so as to perfectly fit the workpiece blank that may have manufacturing errors, a set of precision height adjustment mechanism is integrated on each support bracket 6.

[0035] The mechanism employs a three-point support principle: the central support point is located on a mid-mounted base plate 61 above the middle of the support bracket 6 frame, on which a height fine-tuning device 62 is mounted, such as a screw jack with a precision differential cylinder, the top of which is a spherical contact point. Two edge support points are symmetrically located above both ends of the support bracket 6 frame, each consisting of a side wing base 63. The side wing base 63 includes a base body 631 bolted to the support bracket 6. A similarly precise screw fine-tuning device 632 (such as a differential head) is mounted on the base body 631, its axis perpendicular. The top rod of the screw fine-tuning device 632 is directly opposite a sliding limit block 633 that can slide up and down along a precision guide rail on the base body 631. A circular limit rod opening 634 is machined at the center of the sliding limit block 633. A hardened lifting slide rod 64, with its smooth lower end passing through a limiting rod opening 634, is precisely clearance-fitted, allowing the lifting slide rod 64 to slide freely up and down within the limiting rod opening 634, but restricting horizontal movement. A rotary micro-adjuster 632, with its push rod directly pushing the sliding limit block 633 to produce a slight vertical displacement, thereby causing the lifting slide rod 64 passing through it to perform precise lifting movements synchronously. To withstand the enormous cutting forces and vibrations during machining after adjustment, a series of positioning holes 636 with a diameter of 6-8 mm are machined equidistantly along the vertical direction on the front of the base body 631. When the sliding limit block 633 is adjusted to the desired height, one of its through holes aligns with a positioning hole. At this point, the operator can insert and tighten a high-strength locking bolt 635 (such as an internal hexagonal head bolt), forcing the sliding limit block 633, the locking bolt 635, and the base body 631 to be rigidly connected as one unit, achieving reliable mechanical locking. The top end of the lifting slide bar 64 is connected to the base plate of the fixed support frame 7 via a threaded connection or flange. At the same time, the top end of the height fine adjuster 62 on the middle base plate 61 also rests against the center of the base plate of the fixed support frame 7. In this way, the fixed support frame 7 is supported in an adjustable manner by the middle height fine adjuster 62 and the two lifting slide bars 64 at both ends.

[0036] The fixed support frame 7 is the component that directly contacts the workpiece. It is typically welded from rigid profiles, and its top surface can be covered with a wear-resistant engineering plastic pad or fitted with standard positioning elements. To effectively clamp the workpiece, both ends of the fixed support frame 7 are bent downwards to form robust end clamps 71. The end clamps 71 have elongated slots and are equipped with screw-in side locking elements 72 (such as bolts and pressure blocks) to apply clamping force from the side of the workpiece. Furthermore, several general-purpose or special-purpose clamping seats 73 are installed on the top surface of the fixed support frame 7, depending on the shape of the workpiece. Each clamping seat 73 has a flip-up upper pressure plate 76 mounted at its bottom via a hinged top connector 74, and a fixed lower clamping plate 77 mounted on its side via a side connector 75. When the upper pressure plate 76 is flipped down, it forms a clamping opening with the lower clamping plate 77. Tightening with bolts allows the workpiece to be clamped from above, forming a three-point positioning clamp with the side end clamps 71, ensuring the workpiece remains stationary during processing.

[0037] When processing using this embodiment, the operator first carefully hoists or places the irregularly shaped hardware blank to be processed onto the top surface of all fixed support frames 7. The operator studies the workpiece drawings or 3D model to identify the contact surfaces that need support and their theoretical angles. Then, the first step begins: angle pre-adjustment. For each support bracket 6, the operator manually loosens the locking knob 523 on the side of the main support base 52, and then, possibly with the aid of an angle gauge or digital inclinometer, manually swings the support bracket 6 to near the required theoretical angle. Because the support bracket 6 rotates flexibly, this process is relatively quick. After initial alignment, the locking knob 523 is tightened to temporarily fix the angle. The angle setting of all support brackets 6 is completed in sequence.

[0038] The second step is to finely adjust and fit the height. Due to casting or machining errors in the workpiece blank, the top surface of each fixed support frame 7 may not be fully in contact with the lower surface of the workpiece. The operator observes the gap at each contact point and uses a feeler gauge for assistance. Then, each support bracket 6 is operated in sequence: first, loosen the locking bolts 635 on the side wing bases 63 at both ends. Then, use a special wrench to very slowly rotate the spiral fine adjusters 632 at both ends, observing the slight movement of the lifting slide rod 64 or directly observing the gap change, so that the two ends of the fixed support frame 7 slowly rise or fall until its top surface is fully in contact with the lower surface of the workpiece and the force is even (this can be judged by tapping and listening or feeling). During this process, the height fine adjuster 62 in the middle can also be used to assist in fine adjustment to eliminate frame deformation. After confirming perfect fit, immediately insert the locking bolts 635 at both ends and tighten them to the specified value with a torque wrench, firmly locking the sliding limit block 633 onto the base body 631. This step ensures that the workpiece receives continuous, stable, and deformation-free support along its entire length, greatly improving the rigidity of the process system.

[0039] The third step is final clamping. After all support points are adjusted and locked in height, tighten the side locking pieces 72 at the ends of each fixed support frame 7 in sequence to constrain the workpiece from the side. Then, press down the upper pressure plate 76 of each clamping seat 73 and fasten it to the lower clamping plate 77 with bolts to provide clamping force from above. At this point, the workpiece is securely and accurately clamped on the adjustable support system.

[0040] The fourth step is machining and possible compensation. Since the workpiece is now supported at a certain tilt angle, its designed machining coordinate system is no longer parallel to the machine tool's physical coordinate system. The operator needs to manually calculate the compensation value required for the tool length (Z-axis) during machining programming, based on the angles set for each support bracket 6 (obtainable through scale or measurement). For example, if the main support surface of the workpiece is tilted at an angle α, the machine tool's Z-axis coordinate needs to be offset accordingly based on trigonometric relationships when the tool feeds perpendicular to this tilt. The operator inputs this compensation value into the CNC system's tool length compensation register or considers it directly when generating the program in the CAM software. Subsequently, the machining program is started, and the milling tool 4 performs precise milling according to the compensated trajectory. When machining long grooves or when the workpiece needs to be moved, the program can be paused between segments, and the entire support base 5 can be manually slid along the displacement track 12 to the next position before continuing machining.

[0041] Example 2; This embodiment is based on Embodiment 1. Please refer to... Figure 5 The angle adjustment mechanism has been automated to improve efficiency and accuracy while reducing operator workload. Its overall layout, the movement of the equipment base 1, the milling machine frame 2, the support base 5, the height adjustment mechanism, the fixed support frame 7, and the clamping structure are all consistent with or similar to those in Embodiment 1. The core improvement in this embodiment focuses on the driving method for the angle swing of the support bracket 6.

[0042] Specifically, for each support bracket 6 requiring independent angle control, a motor-driven angle adjustment mechanism is integrated into the main support frame 52. This mechanism is encapsulated inside the main support frame 52 or attached to its side, forming a modular unit. For example... Figure 2 and Figure 3As shown, at the bottom of the main support frame 52, below the rotation axis of each support bracket 6, a thickened drive mounting plate 81 is fixed. A swing wheel 83 is mounted on the drive mounting plate 81 via a pair of high-rigidity fixed support members 82 (such as mounted bearings or bearing housings). The swing wheel 83 can be considered as a specially designed eccentric wheel or crank disc, its rotation center being spatially parallel to but offset from the rotation axis of the support bracket 6. The swing wheel 83 is directly connected to the output shaft of a built-in oscillating motor (not shown in the figure, typically a servo motor with a high-resolution encoder or a closed-loop stepper motor) via a coupling. This motor and its driver are installed in a specially partitioned electrical compartment inside the main support frame 52 for easy heat dissipation and maintenance.

[0043] A swing arm 84 of a specific shape is integrally machined or connected to the outer circumferential surface of the swing wheel 83. The swing arm 84 extends radially from the wheel rim, and its end is machined with a hinge hole. An adjustable-length transmission link 85 is connected at one end to the hinge hole at the end of the swing arm 84 via a spherical or spherical bearing, and at the other end to the swing shaft end of the support bearing 522 at the end of the support bracket 6 (this shaft end extends from the inside of the main support frame 52) via a shaft end connector 86. The shaft end connector 86 and the swing shaft end can be connected by a key, clamping sleeve, or spline to ensure no backlash.

[0044] When the control system issues a command, the swing motor starts, driving the swing wheel 83 to rotate precisely by an angle. The rotational motion of the swing wheel 83 is converted into an approximately arc-shaped planar motion through the swing arm 84 on it. Since the swing arm 84 is hinged to the transmission link 85, the transmission link 85 converts this motion into a push-pull motion along its length. The transmission link 85 then transmits the linear push-pull force to the swing shaft end of the support bracket 6 through the shaft end connector 86. Since there is a certain lever arm between the swing shaft end and the rotation axis of the support bracket 6, this push-pull force is converted into torque that drives the support bracket 6 to swing around its axis, thereby achieving precise electronic control adjustment of the angle of the support bracket 6. The auxiliary support base 54 at the other end of the support bracket 6 still provides simple rotational support. After the angle is adjusted to the correct position, the locking knob 523 mentioned in Embodiment 1 is still retained. It can be automatically locked by an electric actuator driven by the control system, or manually locked by the operator according to the prompts, as a double insurance.

[0045] The workflow design for this embodiment is as follows: 1. The operator does not need to manually move the heavy support bracket 6. He can directly input the theoretical angle value required for each support point (e.g., support point 1 is 15.5 degrees, support point 2 is 0 degrees, support point 3 is -8.2 degrees, etc.) through the touch screen human-machine interface (HMI) installed on the equipment, or directly import process documents containing workpiece clamping information from the host computer.

[0046] 2. After confirming the command, the control system (such as a PLC) sends pulse commands sequentially or simultaneously to the oscillating motors corresponding to each support bracket 6. Each servo motor starts running according to the preset acceleration and speed curves.

[0047] 3. The motor encoder provides real-time position feedback, forming a closed-loop control to ensure that the swing wheel 83 rotates to an absolutely precise position. Through the transmission link 85, each support bracket 6 is synchronously and precisely driven to the target angle.

[0048] 4. Once the desired angle is reached, the control system can send a signal, illuminate an indicator light, or emit a buzzer to prompt the operator to manually lock (locking knob 523), or, if equipped with an automatic locking device, directly complete the locking action.

[0049] 5. In the subsequent height fine-tuning and fitting steps, since the angle has been precisely set by the motor, the operator only needs to focus on eliminating the workpiece's own errors, making the adjustment faster and the target clearer.

[0050] Example 3: This example designs an adjustable milling device with an integrated intelligent linkage control system, and the relevant system is equipped with a coordinate transformation and compensation calculation module.

[0051] Once all support brackets 6 are driven to the calculated theoretical angle (or the angle manually input by the operator), the system acquires this set of angle data. The algorithm, based on the principle of homogeneous coordinate transformation, constructs a pose transformation matrix of the entire workpiece in the machine tool coordinate system due to the different angles of each support point. Based on this matrix, the system automatically and accurately calculates the original toolpath (G-code) based on the workpiece design coordinate system, determining how translation and rotation compensation is needed on the X, Y, and Z axes of the machine tool to accurately reproduce the design intent at the new actual workpiece clamping position. The calculation result can be an online real-time transformation of the original G-code or the generation of a new, compensated machining file. Through pressure sensors or micro-displacement sensors installed on the fixed support frame 7, the system can obtain quantitative feedback on contact force or gap during height fine-tuning, guiding the operator or automatically controlling the height fine-tuner 62 to achieve optimal fit, and even detecting vibrations during machining and fine-tuning the support force.

[0052] The above descriptions are merely a few specific embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural modifications made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the 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 the present invention.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable milling device for irregularly shaped hardware parts, comprising an equipment base (1), a milling tool frame (2) installed on the equipment base (1), and a support base (5) set on the working platform (11) of the equipment base (1), wherein a milling tool (4) that can move laterally and vertically is installed on the milling tool frame (2). Its features are: The work platform (11) is provided with a displacement track (12), and the support base (5) is slidably installed on the displacement track (12); The support base (5) includes a sliding bottom support plate (51) and a driven bottom support plate (53) slidably disposed on the displacement rail (12), and a main support frame (52) and an auxiliary support frame (54) respectively installed on the two. A number of support brackets (6) are rotatably installed between the main support base frame (52) and the auxiliary support base frame (54), and each support bracket (6) is provided with a fixed support frame (7) for supporting and fixing the workpiece. The main support frame (52) is provided with an angle adjustment drive mechanism for independently driving the corresponding support bracket (6) to swing around its rotation axis; Each support bracket (6) is equipped with a height adjustment mechanism for independently driving the fixed support frame (7) on it to perform lifting and lowering movements; The rotation axis of the angle adjustment drive mechanism is spatially decoupled from the lifting and lowering direction of the height adjustment mechanism, and each is provided with an independent locking component; The device also includes a control system configured to automatically control the height adjustment mechanism and the milling tool (4) to perform coordinate compensation movement according to the angle of the support bracket (6) adjusted by the angle adjustment drive mechanism.

2. The adjustable milling device for irregularly shaped hardware parts according to claim 1, characterized in that, The bottom of the support base (5) is provided with a plurality of sliding blocks (55), and the sliding blocks (55) are equipped with rolling wheels (57) that cooperate with the displacement track (12) via mounting shafts (56).

3. The adjustable milling device for irregularly shaped hardware parts according to claim 2, characterized in that: A fixing plate (521) is provided on the plate of the main support frame (52); The end frame of the support bracket (6) is provided with a support bearing (522), the shaft of the support bearing (522) is supported on the fixing plate (521), and is locked and fixed by the locking knob (523); The auxiliary support frame (54) is provided with a support part that has the same structure as the fixed plate (521).

4. The adjustable milling device for irregularly shaped hardware parts according to claim 3, characterized in that: The angle adjustment drive mechanism includes: Drive mounting plate (81) is installed at the bottom of the main support frame (52); A swing wheel (83) is mounted on a drive mounting plate (81) via a fixed support (82), and the swing wheel (83) is driven by a swing motor located inside the main support frame (52); An integrated swing arm (84) is provided on the side edge of the swing wheel (83). A transmission link (85) connecting the swing arm (84) and the swing shaft end of the support bearing (522).

5. The adjustable milling device for irregularly shaped hardware parts according to claim 3, characterized in that: The height adjustment mechanism includes: A height fine adjuster (62) is set on the center base plate (61) in the middle of the frame of the support bracket (6). The side wing bases (63) are symmetrically arranged at both ends of the support bracket (6) frame, and each side wing base (63) is provided with a lifting slide rod (64). The top of the height fine adjuster (62) and the top of the lifting slide bar (64) jointly support the fixed support frame (7).

6. The adjustable milling device for irregularly shaped hardware parts according to claim 5, characterized in that: The bottom plate of the fixed support frame (7) is sleeved and fixed to the top of the lifting slide bar (64); The side wing base (63) includes a base body (631), on which are provided: A screw fine adjuster (632) has its output end connected to a sliding limit block (633), and the lifting slide rod (64) passes through the limit rod opening (634) of the sliding limit block (633); A plurality of positioning holes (636) are arranged vertically, and the sliding limit block (633) can be selectively locked and fixed at any of the positioning holes (636) by means of a locking bolt (635).

7. The adjustable milling device for irregularly shaped hardware parts according to claim 1, characterized in that: The milling machine rack (2) includes: Horizontal support (22); The lateral displacement module (23) is installed on the horizontal support (22); The lifting frame mounting plate (24) is slidably installed on the lateral displacement module (23); The lifting and pushing frame (3) includes a lifting module (32) fixed on the lifting frame mounting plate (24) and a tool mounting base (34) driven by the lifting module (32) for mounting the milling tool (4).

8. The adjustable milling device for irregularly shaped hardware parts according to claim 1, characterized in that, The fixed support frame (7) is provided with end clamps (71) at both ends, and the side edge of the end clamps (71) is provided with side edge locking members (72).

9. The adjustable milling device for irregularly shaped hardware parts according to claim 8, characterized in that, The mounting surface of the fixed support frame (7) is also provided with a number of clamping seats (73), and the clamping seats (73) are equipped with an upper pressure plate (76) and a lower clamping plate (77) that can cooperate with each other to clamp the workpiece.

10. The adjustable milling device for irregularly shaped hardware parts according to claim 1, characterized in that, The adjustment process executed by the control system is configured as follows: first, drive the support bracket (6) to swing to the set angle and lock it, and then control the height adjustment mechanism to make the fixed support frame (7) fit against the lower surface of the workpiece.

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