High speed engraving machine with adjustable clamping mechanism

Abstract

This invention relates to the field of machining equipment technology, and more particularly to a high-speed engraving and milling machine with an adjustable clamping mechanism. The machine includes a frame, with first linear motors mounted on both sides of the frame's table. A second linear motor is mounted on the mover of each of the first linear motors, and a third linear motor is fixedly mounted between the movers of two second linear motors. A working module is mounted on the mover of the third linear motor. A workpiece support platform is also fixed on the frame. This engraving and milling machine achieves rapid setting and arbitrary adjustment of the clamping position by manually pushing the dovetail slider, without any tools. This avoids the tedious traditional "loosening-adjusting-tightening" operation, significantly improving workpiece clamping efficiency and reducing the operator's workload. It is particularly suitable for scenarios involving frequent workpiece changes or multi-variety, small-batch processing.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, and in particular to a high-speed engraving and milling machine with an adjustable clamping mechanism. Background Technology

[0002] In the field of CNC engraving and milling machine processing, fixtures are core auxiliary components for fixing workpieces and ensuring accuracy. Their stability, ease of operation, and flexibility of position adjustment directly affect the processing efficiency, workpiece quality, and operator workload of the CNC engraving and milling machine. Currently, most CNC engraving and milling machines on the market use fixtures that are primarily fixed with traditional screws, resulting in poor position adjustment flexibility. Operators must place the fixture in the designated installation position on the CNC engraving and milling machine and then manually tighten multiple screws to secure it. If the fixture position needs to be adjusted, the screws must be loosened again, the fixture moved, and then tightened again, making it impossible to freely adjust the fixture position, which is extremely inconvenient.

[0003] While the aforementioned traditional screw-fastened CNC engraving machine fixtures can meet basic processing needs, they have many shortcomings in practical applications, especially in terms of position adjustment. The core flaw lies in the fact that both fixing and disassembling the fixture rely on manual screw tightening, making the process cumbersome. Each adjustment requires repeating the complex steps of "loosening—adjusting—tightening," and necessitates the use of tools such as wrenches. This makes it impossible to achieve rapid fixing, rapid disassembly, and arbitrary position adjustment, which is incompatible with the current demands for high efficiency, convenience, and flexibility in the CNC engraving and milling industry. Because the screws need to be manually tightened to fix the fixture and the position cannot be adjusted at will, it not only significantly increases the workload of operators, especially in batch processing scenarios where different specifications of fixtures are frequently changed and the position is frequently adjusted to adapt to different workpieces, but also causes operators to repeatedly tighten screws and move fixtures, which can easily lead to fatigue, resulting in low operating efficiency and extending the overall processing cycle of the workpiece. At the same time, it is difficult to maintain a consistent force when manually tightening screws. If the force is too weak, the fixture will not be firmly fixed, and it is easy for the fixture to loosen or shift during the engraving and milling process, affecting the processing accuracy of the workpiece and even causing the workpiece to be scrapped. If the force is too strong, it may cause the screw to strip, or damage the threads of the fixture or the worktable, increasing equipment maintenance costs and fixture wear, and further limiting the flexibility and convenience of fixture position adjustment.

[0004] Therefore, developing a high-speed engraving and milling machine with an adjustable clamping mechanism to achieve rapid adjustment and stable fixation of the clamp has become an urgent technical problem to be solved in this field. Summary of the Invention

[0005] In order to overcome the shortcomings of existing engraving and milling machine fixtures, such as the inability to adjust the position at will, cumbersome operation, and poor fixation stability, this invention provides a high-speed engraving and milling machine with an adjustable clamping mechanism.

[0006] A high-speed engraving and milling machine with an adjustable clamping mechanism includes a frame. First linear motors are mounted on both sides of the frame's table. Second linear motors are mounted on the rotors of each first linear motor. A third linear motor is fixedly mounted between the rotors of two second linear motors, and a working module is mounted on the rotor of the third linear motor. A workpiece support platform is also fixed on the frame. At least one horizontally extending dovetail guide groove is formed on the top surface of the workpiece support platform. At least two dovetail sliders are slidably connected in the horizontal direction within each dovetail guide groove. A steering clamping block is rotatably connected to each dovetail slider. The workpiece support platform contains a slider locking assembly for lifting the dovetail sliders upwards to lock their lateral position. Each steering clamping block contains a flexible side clamping assembly for flexibly clamping the sides of the workpiece. The workpiece support platform also contains a side clamping drive assembly for driving the flexible side clamping assemblies, and a main drive assembly for controlling the sequential lifting and lowering of the slider locking assembly and the side clamping drive assembly. The steering clamping block also contains a top clamping assembly for pressing the workpiece downwards.

[0007] As a preferred embodiment of the present invention, there are twenty dovetail guide grooves, and two dovetail sliders are slidably connected in each dovetail guide groove.

[0008] As a preferred embodiment of the present invention, the slider locking assembly includes a slider lifting plate that is vertically slidably connected to the top wall of the workpiece support platform; in the initial state, the top surface of the slider lifting plate is flush with the supporting bottom surface of the dovetail guide groove, and the bottom surface of the dovetail slider presses against the top surface of the slider lifting plate; the slider lifting plate is configured such that when it moves upward, it lifts the dovetail slider upward, so that the trapezoidal inclined surface of the dovetail slider is tightly fitted with the side wall inclined surface of the dovetail guide groove, thereby locking the lateral position of the dovetail slider and the steering clamping block on it.

[0009] As a preferred embodiment of the present invention, the flexible side clamping assembly includes a transverse clamping rod that is slidably connected to each of the turning clamping blocks in the transverse direction. Each transverse clamping rod has a flexible clamping block slidably connected in the horizontal direction at one end near the central axis of the workpiece bearing platform. Each flexible clamping block and its corresponding transverse clamping rod are connected by a buffer spring, and each flexible clamping block has a silicone pad on the side that is close to each other.

[0010] As a preferred embodiment of the present invention, the side clamping drive assembly includes a clamping rod drive block slidably connected vertically within each dovetail slider, and a linkage lifting plate slidably connected vertically within the slider lifting plate. In the initial state, the top surface of the linkage lifting plate is flush with the top surface of the slider lifting plate and the supporting bottom surface of the dovetail guide groove. The bottom surface of each clamping rod drive block presses against the top surface of the linkage lifting plate, but does not contact the top surface of the slider lifting plate. The top of each clamping rod drive block is hemispherical, and the lower part of each transverse clamping rod has an inclined surface on the side near the top of the clamping rod drive block. The side clamping drive assembly is configured such that when the linkage lifting plate moves upward, it pushes the clamping rod drive block to rise, the top of the clamping rod drive block abuts against the inclined surface of the transverse clamping rod, driving the transverse clamping rod to move the flexible clamping block towards the workpiece. When the side of the workpiece abuts against the flexible clamping block, the transverse clamping rod continues to compress the buffer spring to achieve flexible lateral clamping.

[0011] As a preferred embodiment of the present invention, the main drive assembly includes servo motors symmetrically mounted on the rear of the workpiece support platform, and symmetrical transmission shafts rotatably connected to the workpiece support platform in a transverse direction. Each transmission shaft is arranged in the front-rear direction, and its rear end is fixedly connected to the output shaft of the corresponding servo motor through a coupling. A primary locking cam is fixedly connected to both ends of each transmission shaft, and the primary locking cam contacts the bottom surface of the slider lifting plate. A secondary clamping cam bushing is fixedly connected to the middle of each transmission shaft, and the secondary clamping cam bushing contacts the bottom surface of the linkage lifting plate. The arc of the protruding part of the primary locking cam is greater than the arc of the protruding part of the secondary clamping cam bushing.

[0012] As a preferred embodiment of the present invention, the top clamping assembly includes quick-release mounting holes formed on the top wall of each steering clamping block, through which a rotating shaft support is detachably mounted; each rotating shaft support is rotatably connected to a downward pressure swing rod, and the lateral section of the downward pressure swing rod is connected to the corresponding rotating shaft support by a return spring; each downward pressure swing rod has a column at its bottom end, and the upper part of each lateral clamping rod has an inclined surface on the side near the column; the top clamping assembly is configured such that when the lateral clamping rod moves inward, the inclined surface at its upper part pushes the column of the downward pressure swing rod, causing the outer end of the downward pressure swing rod to tilt upward and the inner end to deflect downward and press against the top surface of the workpiece, while the return spring is stretched.

[0013] As a preferred embodiment of the present invention, a first linear motor is used to control the working module to move in the front-back direction, a second linear motor is used to control the working module to move in the up-down direction, and a third linear motor is used to control the working module to move in the left-right direction, thereby realizing the flexible movement of the working module in the X, Y, and Z axis directions to perform engraving and milling processing on the workpiece.

[0014] The beneficial effects of this invention are as follows: This engraving and milling machine can quickly set and adjust the clamping position by manually pushing the dovetail slider without any tools, avoiding the tedious operation of traditional "loosening-adjusting-tightening", significantly improving the workpiece clamping efficiency and reducing the workload of operators. It is especially suitable for scenarios with frequent workpiece changes or multi-variety small batch processing.

[0015] This engraving and milling machine uses a motor-driven cam mechanism to sequentially lift the slider, lifting plate, and linkage lifting plate, achieving multi-stage linkage clamping with lateral locking of the dovetail slider, lateral clamping of the flexible clamping block, and top pressing of the downward swing rod. This provides all-round stable positioning of the workpiece, effectively preventing workpiece displacement caused by engraving and milling vibration, ensuring processing accuracy. At the same time, the buffer spring and silicone pad prevent hard damage to the workpiece surface.

[0016] After processing, this engraving and milling machine reverses via a servo motor, automatically resetting each clamping component in sequence using gravity and spring force. The dovetail slider returns to its free sliding state, enabling rapid release of clamps and workpiece replacement. The entire reset process requires no manual intervention, significantly shortening auxiliary time, improving production efficiency, and reducing the labor intensity of operators. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the workpiece support platform, slider lifting plate, and linkage lifting plate of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the dovetail slider, clamping rod drive block, and transverse clamping rod of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the components of the present invention, including the slider lifting plate, the linkage lifting plate, and the dovetail slider.

[0021] Figure 5 This is an exploded three-dimensional structural diagram of the workpiece support platform, slider lifting plate, and linkage lifting plate of the present invention.

[0022] Figure 6 This is a three-dimensional structural cross-sectional view of the dovetail slider and steering clamping block of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the servo motor, transmission shaft, and first-stage locking cam components of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the transverse clamping rod, flexible clamping block, and buffer spring components of the present invention.

[0025] Figure 9This is a three-dimensional structural diagram of the components of the present invention, including the rotating shaft support, the downward pressure swing rod, and the return spring.

[0026] The components in the diagram are labeled as follows: 101_Frame, 102_First Linear Motor, 103_Second Linear Motor, 104_Third Linear Motor, 105_Working Module, 106_Workpiece Support Platform, 107_Dovetail Guide Groove, 108_Slider Lifting Plate, 109_Linkage Lifting Plate, 110_Dovetail Slider, 111_Steering Clamping Block, 201_Servo Motor, 202_Transmission Shaft, 203_First-Level Locking Cam, 204_Second-Level Clamping Cam Sleeve, 301_Clamping Rod Drive Block, 302_Transverse Clamping Rod, 303_Flexible Clamping Block, 304_Buffer Spring, 401_Shaft Support, 402_Pressing Swing Rod, 403_Reset Spring, 404_Quick-Release Mounting Hole. Detailed Implementation

[0027] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0028] Example 1: A high-speed engraving and milling machine with an adjustable clamping mechanism, such as... Figure 1 and Figure 3 As shown, the system includes a frame 101 serving as the main support structure. First linear motors 102 are mounted on both the left and right sides of the frame 101's platform. Each first linear motor 102 includes a stator and a mover, with the stator fixedly connected to the frame 101. Second linear motors 103 are mounted on the movers of the two first linear motors 102, with the stators of each second linear motor 103 fixedly connected to the movers of the corresponding first linear motor 102. A third linear motor 104 is fixedly mounted between the movers of the two second linear motors 103, with the stator of the third linear motor 104 fixedly connected between the movers of the two second linear motors 103. A working module 105 is mounted on the mover of the third linear motor 104.

[0029] The first linear motor 102 is used to control the working module 105 to move in the front-back direction; the second linear motor 103 is used to control the working module 105 to move in the up-down direction; and the third linear motor 104 is used to control the working module 105 to move in the left-right direction, thereby realizing the flexible movement of the working module 105 in the X, Y, and Z axis directions to perform engraving and milling on the workpiece.

[0030] A workpiece support platform 106 is fixedly connected to the table surface of the frame 101. The workpiece support platform 106 is located directly below the work module 105 and has a box-like structure. Its top surface is used to place the workpiece to be processed.

[0031] The top wall of the workpiece support platform 106 has several evenly distributed and laterally extending dovetail guide grooves 107 longitudinally distributed. In this embodiment, there are twenty dovetail guide grooves 107. At least two dovetail sliders 110 are slidably connected in the horizontal direction within each dovetail guide groove 107 (only one is shown in the figure, the others are not shown). The cross-section of the dovetail slider 110 is a trapezoidal structure that matches the dovetail guide groove 107. The supporting bottom surface of the dovetail guide groove 107 provides sliding support for the dovetail slider 110, and its sidewall slope cooperates with the dovetail slider 110 to achieve linear guidance and anti-detachment limiting functions for the dovetail slider 110.

[0032] Each dovetail slider 110 is rotatably connected to a steering clamping block 111. In the initial state, each dovetail slider 110 is located at both ends of the corresponding dovetail guide groove 107, keeping the center of the top surface of the workpiece support platform 106 flat, which facilitates the flat placement of the workpiece.

[0033] like Figure 4 and Figure 5 As shown, a slider locking assembly is provided inside the workpiece support platform 106 to lock the dovetail slider 110 in the lateral position within the dovetail guide groove 107.

[0034] The slider locking assembly includes a slider lifting plate 108 that is vertically slidably connected to the top wall of the workpiece support platform 106. In the initial state, the top surface of the slider lifting plate 108 is flush with the supporting bottom surface of the dovetail guide groove 107, and the bottom surface of the dovetail slider 110 presses against the top surface of the slider lifting plate 108. The slider lifting plate 108 is configured such that when it moves upward, it lifts the dovetail slider 110 upward, causing the trapezoidal inclined surface of the dovetail slider 110 to fit tightly against the side wall inclined surface of the dovetail guide groove 107, thereby locking the lateral position of the dovetail slider 110 and its upward-facing steering clamping block 111.

[0035] like Figure 6 and Figure 8 As shown, each steering clamping block 111 is equipped with a flexible side clamping assembly for soft clamping of the left and right side walls of the workpiece.

[0036] The flexible side clamping assembly includes transverse clamping rods 302 that are slidably connected laterally within each steering clamping block 111. Each transverse clamping rod 302 has a flexible clamping block 303 slidably connected horizontally to one end near the central axis of the workpiece support platform 106. Each flexible clamping block 303 is connected to its corresponding transverse clamping rod 302 via a buffer spring 304, and each flexible clamping block 303 has a silicone pad on the side closest to each other to increase friction and prevent hard clamping of the workpiece.

[0037] like Figure 4 , Figure 5 and Figure 8 As shown, the workpiece support platform 106 is equipped with a side clamping drive assembly for driving the transverse clamping rod 302 to move inward.

[0038] The side clamping drive assembly includes clamping rod drive blocks 301 that are vertically slidably connected within each dovetail slider 110. A linkage lift plate 109 is vertically slidably connected within the slider lifting plate 108, its top surface initially flush with the top surface of the slider lifting plate 108 and the supporting bottom surface of the dovetail guide groove 107. The bottom surface of each clamping rod drive block 301 presses against the top surface of the linkage lift plate 109, but does not contact the top surface of the slider lifting plate 108, forming a nested structure: the supporting bottom surface of the dovetail guide groove 107, from the outside to the inside, consists of the edge of the top wall of the workpiece support platform 106, the top surface of the slider lifting plate 108, and the top surface of the linkage lift plate 109.

[0039] Each clamping rod drive block 301 has a hemispherical top, and each transverse clamping rod 302 has an inclined surface on the side near the top of the clamping rod drive block 301. The side clamping drive assembly is configured such that when the linkage lifting plate 109 moves upward, it pushes the clamping rod drive block 301 upward, and the top of the clamping rod drive block 301 abuts against the inclined surface of the transverse clamping rod 302, driving the transverse clamping rod 302 to move the flexible clamping block 303 towards the workpiece; when the side of the workpiece abuts against the flexible clamping block 303, the transverse clamping rod 302 continues to compress the buffer spring 304 to achieve flexible lateral clamping.

[0040] like Figure 7 As shown, the workpiece support platform 106 is equipped with a main drive assembly, which is used to control the slider lifting plate 108 and the linkage lifting plate 109 to rise and fall sequentially.

[0041] The main drive assembly includes: servo motors 201 symmetrically mounted on the rear of the workpiece support platform 106, and symmetrical transmission shafts 202 rotatably connected to the workpiece support platform 106 in a transverse direction. Each transmission shaft 202 is arranged in the front-to-back direction, and its rear end is fixedly connected to the output shaft of the corresponding servo motor 201 via a coupling. A primary locking cam 203 is fixedly connected to both ends of each transmission shaft 202, and the primary locking cam 203 contacts the bottom surface of the slider lifting plate 108. A secondary clamping cam bushing 204 is fixedly connected to the middle of each transmission shaft 202, and the secondary clamping cam bushing 204 contacts the bottom surface of the linkage lifting plate 109. The curvature of the protruding portion of the primary locking cam 203 is greater than the curvature of the protruding portion of the secondary clamping cam bushing 204.

[0042] This embodiment also includes a top clamping assembly for clamping the workpiece onto the workpiece support platform 106 from above.

[0043] like Figure 8 and Figure 9 As shown, the top clamping assembly includes: quick-release mounting holes 404 formed on the top wall of each steering clamping block 111, through which a pivot support 401 is detachably mounted. Each pivot support 401 is rotatably connected to a downward pressure lever 402, and the lateral section of the downward pressure lever 402 is connected to the corresponding pivot support 401 via a return spring 403. Each downward pressure lever 402 has a column at its bottom end, and the upper part of each lateral clamping rod 302 has an inclined surface on the side near the column.

[0044] The top clamping assembly is configured such that when the transverse clamping rod 302 moves inward, its upper inclined surface pushes the column of the downward pressing swing rod 402, causing the outer end of the downward pressing swing rod 402 to tilt upward and the inner end to deflect downward and press against the top surface of the workpiece, while the return spring 403 is stretched.

[0045] Working principle: In the initial state, each dovetail slider 110 is located at the left and right ends of the dovetail guide groove 107, and the top surface of the workpiece bearing platform 106 is flat, on which the workpiece to be processed is placed.

[0046] Based on the workpiece size and shape, the operator manually pushes the dovetail sliders 110 on the left and right sides toward the workpiece. The dovetail sliders 110 drive the steering clamping block 111, the transverse clamping rod 302, and the flexible clamping block 303 to move inward, so that the flexible clamping block 303 aligns with the side of the workpiece. If the side of the workpiece is irregular, the steering clamping block 111 can be rotated to adjust the clamping angle of the flexible clamping block 303.

[0047] The adjustment process requires no tools. Operators can directly push the dovetail slider 110 manually to quickly set and adjust the clamping position, completely avoiding the tedious steps of traditional "loosening-adjusting-tightening", significantly reducing the intensity of operation and improving clamping efficiency.

[0048] Start the servo motor 201 to drive the transmission shaft 202 to rotate, which in turn drives the first-stage locking cam 203 and the second-stage clamping cam sleeve 204 to rotate synchronously.

[0049] The protruding part of the first-stage locking cam 203 has a large arc, which preferentially contacts and lifts the slider lifting plate 108 upward. When the slider lifting plate 108 moves upward, because its top surface is initially flush with the top surface of the linkage lifting plate 109 and the linkage lifting plate 109 is slidably connected inside the slider lifting plate 108, the slider lifting plate 108 will drive the linkage lifting plate 109 to move upward together. At the same time, the slider lifting plate 108 lifts the dovetail slider 110 upward along the dovetail guide groove 107. The trapezoidal inclined surface of the dovetail slider 110 is closely fitted with the side wall inclined surface of the dovetail guide groove 107, thereby locking the lateral position of the dovetail slider 110 and the steering clamping block 111 on it, realizing the lateral limitation of the workpiece.

[0050] The transmission shaft 202 continues to rotate, and the protruding part of the secondary clamping camshaft sleeve 204 contacts and lifts the linkage lifting plate 109 upward. Since the linkage lifting plate 109 has already moved upward a certain distance with the slider lifting plate 108, the secondary clamping camshaft sleeve 204 further lifts the linkage lifting plate 109 upward relative to the slider lifting plate 108. The linkage lifting plate 109 pushes the clamping rod drive block 301 upward, and its hemispherical top abuts against the inclined surface of the lower part of the transverse clamping rod 302, driving the transverse clamping rod 302 to move the flexible clamping block 303 towards the workpiece. When the silicone pad of the flexible clamping block 303 contacts the side of the workpiece, the transverse clamping rod 302 continues to compress the buffer spring 304 to generate a flexible clamping force.

[0051] An automatic locking mechanism driven by a motor is used to achieve consistent and controllable locking force, avoiding problems such as insecure fixing or thread damage caused by manual operation. A 304 stainless steel buffer spring and a silicone pad provide flexible lateral clamping, ensuring clamping force while preventing damage to the workpiece surface.

[0052] As the horizontal clamping rod 302 moves inward, its upper inclined surface pushes the column at the bottom of the downward pressing swing rod 402, causing the outer end of the downward pressing swing rod 402 to tilt upward and the inner end to deflect downward, pressing against the top surface of the workpiece. The return spring 403 is stretched, thus limiting the workpiece in the vertical direction.

[0053] Through multi-level linkage clamping, the workpiece is stably limited in all directions in the horizontal, lateral and vertical directions, which effectively avoids workpiece displacement caused by vibration during the engraving and milling process and ensures processing accuracy.

[0054] After the workpiece is stably clamped in the horizontal and vertical directions, the working module 105 is driven by the first linear motor 102, the second linear motor 103 and the third linear motor 104 to move in the front-back, up-down and left-right directions respectively to perform engraving and milling on the workpiece.

[0055] After the workpiece is processed, the servo motor 201 is controlled to rotate in the opposite direction, and the transmission shaft 202 drives the first-stage locking cam 203 and the second-stage clamping cam sleeve 204 to rotate in the same direction.

[0056] The protruding part of the secondary clamping camshaft sleeve 204 first separates from the linkage lifting plate 109, and the linkage lifting plate 109 and the clamping rod drive block 301 fall under the action of gravity. The transverse clamping rod 302 returns to its original position outward under the elastic force of the buffer spring 304, and the flexible clamping block 303 releases its clamping of the workpiece side. At the same time, the inclined surface of the upper part of the transverse clamping rod 302 separates from the column of the downward pressure swing rod 402, and the downward pressure swing rod 402 deflects upward and returns to its original position under the action of the return spring 403, releasing the pressure on the top surface of the workpiece.

[0057] The protruding part of the first-stage locking cam 203 then separates from the slider lifting plate 108, and the slider lifting plate 108 and the dovetail slider 110 fall back to their original positions under the action of gravity, and the dovetail slider 110 returns to its free sliding state in the dovetail guide groove 107.

[0058] Move the dovetail slider 110 outward to remove the processed workpiece and place the next workpiece to be processed, repeating the above manual alignment and automatic clamping process.

[0059] The entire reset process requires no manual intervention, relying on gravity and spring force to complete automatically, enabling rapid release of clamps and workpiece replacement. Compared with traditional screw fastening methods, this solution can significantly shorten auxiliary time and greatly improve production efficiency in the processing of large batches and diverse workpieces, while reducing the labor intensity of operators.

[0060] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A high-speed engraving and milling machine with an adjustable clamping mechanism, comprising a rack (101), first linear motors (102) are installed on the left and right sides of the table top of the rack (101), second linear motors (103) are respectively installed on the movers of each first linear motor (102), a third linear motor (104) is fixedly installed between the movers of the two second linear motors (103), and a working module (105) is installed on the mover of the third linear motor (104); characterized in that, The frame (101) is also fixed with a workpiece support platform (106). The top surface of the workpiece support platform (106) is provided with at least one horizontally extending dovetail guide groove (107). At least two dovetail sliders (110) are slidably connected in the horizontal direction in each dovetail guide groove (107). Each dovetail slider (110) is rotatably connected with a steering clamping block (111). The workpiece support platform (106) is provided with a slider locking assembly for lifting the dovetail sliders (110) upward to lock their lateral position. Each steering clamping block (111) is provided with a flexible side clamping assembly for flexibly clamping the side of the workpiece. The workpiece support platform (106) is also provided with a side clamping drive assembly for driving the flexible side clamping assembly to move, and a main drive assembly for controlling the slider locking assembly and the side clamping drive assembly to rise and fall in sequence. The steering clamping block (111) is also provided with a top clamping assembly for pressing the workpiece from above downward.

2. The high-speed engraving and milling machine with an adjustable clamping mechanism as described in claim 1, characterized in that, There are twenty dovetail guide grooves (107), and two dovetail sliders (110) are slidably connected in each dovetail guide groove (107).

3. The high-speed engraving and milling machine with an adjustable clamping mechanism as described in claim 2, characterized in that, The slider locking assembly includes a slider lifting plate (108) that is vertically slidably connected to the top wall of the workpiece support platform (106). In the initial state, the top surface of the slider lifting plate (108) is flush with the support bottom surface of the dovetail guide groove (107), and the bottom surface of the dovetail slider (110) presses against the top surface of the slider lifting plate (108). The slider lifting plate (108) is configured to lift the dovetail slider (110) upward when it moves upward, so that the trapezoidal inclined surface of the dovetail slider (110) fits tightly against the side wall inclined surface of the dovetail guide groove (107), thereby locking the lateral position of the dovetail slider (110) and the steering clamping block (111) on it.

4. The high-speed engraving and milling machine with an adjustable clamping mechanism as described in claim 3, characterized in that, The flexible side clamping assembly includes a transverse clamping rod (302) that is slidably connected to each of the steering clamping blocks (111) in the transverse direction. Each transverse clamping rod (302) has a flexible clamping block (303) slidably connected to the end of each transverse clamping rod (302) near the central axis of the workpiece bearing platform (106) in the horizontal direction. Each flexible clamping block (303) is connected to its corresponding transverse clamping rod (302) by a buffer spring (304), and each flexible clamping block (303) has a silicone pad on the side of each flexible clamping block (303) that is close to each other.

5. The high-speed engraving and milling machine with an adjustable clamping mechanism as described in claim 4, characterized in that, The side clamping drive assembly includes a clamping rod drive block (301) that is vertically slidably connected to each dovetail slider (110), and a linkage lifting plate (109) that is vertically slidably connected to the slider lifting plate (108). In the initial state, the top surface of the linkage lifting plate (109) is flush with the top surface of the slider lifting plate (108) and the supporting bottom surface of the dovetail guide groove (107). The bottom surface of each clamping rod drive block (301) presses against the top surface of the linkage lifting plate (109) and does not contact the top surface of the slider lifting plate (108). The top of each clamping rod drive block (301) is hemispherical. The lower part of each transverse clamping rod (302) has an inclined surface on one side near the top of the clamping rod driving block (301). The side clamping drive assembly is configured such that when the linkage lifting plate (109) moves upward, it pushes the clamping rod driving block (301) to rise, the top of the clamping rod driving block (301) abuts against the inclined surface of the transverse clamping rod (302), driving the transverse clamping rod (302) to move the flexible clamping block (303) towards the workpiece, and when the side of the workpiece abuts against the flexible clamping block (303), the transverse clamping rod (302) continues to compress the buffer spring (304) to achieve flexible lateral clamping.

6. The high-speed engraving and milling machine with an adjustable clamping mechanism as described in claim 5, characterized in that, The main drive assembly includes servo motors (201) symmetrically mounted on the rear of the workpiece support platform (106) and symmetrical transmission shafts (202) rotatably connected to the workpiece support platform (106) in the transverse direction. Each transmission shaft (202) is arranged in the front-rear direction, and its rear end is fixedly connected to the output shaft of the corresponding servo motor (201) through a coupling. Each transmission shaft (202) has a first-stage locking cam (203) fixedly connected to both ends of the front and rear ends. The first-stage locking cam (203) contacts the bottom surface of the slider lifting plate (108). Each transmission shaft (202) has a second-stage clamping cam bushing (204) fixedly connected to the middle of the shaft. The second-stage clamping cam bushing (204) contacts the bottom surface of the linkage lifting plate (109). The arc of the protruding part of the first-stage locking cam (203) is greater than the arc of the protruding part of the second-stage clamping cam bushing (204).

7. The high-speed engraving and milling machine with an adjustable clamping mechanism as described in claim 6, characterized in that, The top clamping assembly includes quick-release mounting holes (404) on the top wall of each steering clamping block (111), through which a pivot support (401) is detachably mounted; each pivot support (401) is rotatably connected to a downward pressure lever (402), and the lateral section of the downward pressure lever (402) is connected to the corresponding pivot support (401) by a return spring (403); each downward pressure lever (402) has a column at its bottom end, and each lateral clamping rod (302) has an inclined surface on the side near the column at its upper part; the top clamping assembly is configured such that when the lateral clamping rod (302) moves inward, the inclined surface at its upper part pushes the column of the downward pressure lever (402), causing the outer end of the downward pressure lever (402) to tilt upward and the inner end to deflect downward and press against the top surface of the workpiece, while the return spring (403) is stretched.

8. The high-speed engraving and milling machine with an adjustable clamping mechanism as described in claim 7, characterized in that, The first linear motor (102) is used to control the working module (105) to move in the front-back direction, the second linear motor (103) is used to control the working module (105) to move in the up-down direction, and the third linear motor (104) is used to control the working module (105) to move in the left-right direction, thereby realizing the flexible movement of the working module (105) in the X, Y, and Z axis directions to perform engraving and milling on the workpiece.

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