Three-dimensional stone carving machine

Abstract

The present application relates to stone processing equipment technical field, especially to a kind of three-dimensional stone carving machine, including support frame, movement frame, multiple mobile plate with main shaft mechanism and X, Y, Z axis movement mechanism, X axis movement mechanism includes screw rod, nut body, second nut seat with clutch block and spring and moving rod with V-shaped guide slot, and specified head stop is realized by moving rod pressure trigger clutch block tripping. Second nut seat is equipped with second motor and driving gear, for locking the tooth surface of clutch block after tripping, the present application realizes the integrated processing of three-axis plane and four-axis rotation, without disassembling platform can switch mode, and idle head can be automatically stored in edge anti-interference, reduce equipment cost, improve processing flexibility, solve the problem that existing multi-spindle carving machine cannot consider plane batch processing and four-axis rotation carving, add rotation axis easily crowded stroke and head interference.

Description

Technical Field

[0001] This invention relates to the field of stone processing equipment technology, and in particular to a three-dimensional stone carving machine. Background Technology

[0002] In actual production applications, existing multi-spindle stone carving machines can usually only perform three-axis processing on flat surfaces or slabs. With the development of the customized market, processing companies often need to perform four-axis rotary carving on cylindrical or complex shaft-type stone materials such as table and chair legs and stair railings. Traditional single-sided carving machines cannot meet this demand. If a rotary axis is temporarily installed on the existing worktable, it will greatly reduce the effective processing stroke of the flat surface. If companies purchase a dedicated four-axis rotary carving machine, it will not only significantly increase the equipment purchase cost, but also occupy a large amount of production workshop space, resulting in high equipment idle rate and insufficient flexible production capacity. Summary of the Invention

[0003] Therefore, in view of the above problems, the present invention proposes a three-dimensional stone carving machine, which solves the above problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A three-dimensional stone carving machine includes a support frame, a motion frame slidably disposed on both sides of the support frame, multiple movable plates slidably disposed on the motion frame, a main spindle mechanism disposed in front of each movable plate, a z-axis motion mechanism disposed on the movable plates for driving the main spindle mechanism to move up and down, an x-axis motion mechanism for driving the movable plates to move left and right on the motion frame, a y-axis motion mechanism for driving the motion frame to move back and forth on the support frame, a cutting tool disposed at the bottom of the main spindle mechanism, a mounting frame disposed on the right side of the support frame, a detachable claw plate bracket disposed on the top surface of the mounting frame, a center seat disposed on the mounting frame and on the side opposite to the claw plate bracket, a rotating clamp disposed on the claw plate bracket, and a first drive mechanism for rotating the rotating clamp. The top surface of the mounting frame is provided with a groove for bolting the claw plate bracket and the center seat.

[0005] Furthermore, the rotary clamp is a three-jaw chuck or a four-jaw chuck.

[0006] Furthermore, the x-axis motion mechanism includes a lead screw rotatably mounted on the motion frame, a first motor for driving the lead screw to rotate, a nut body located outside the lead screw and behind each moving plate, a first nut seat and a second nut seat rotatably mounted outside the nut body, a rectangular hole located outside the nut body, a clutch block slidably mounted in the second nut seat and inserted into the rectangular hole, a spring located in the second nut seat and on the top surface of the clutch block, a moving rod slidably mounted in the second nut seat, a guide groove located in the middle of the moving rod, and a pin mounted on the clutch block and slidably engaged with the guide groove. The front end of the first nut seat is connected to each moving plate, and the second nut seat is provided with a second drive mechanism for driving longitudinal movement.

[0007] Furthermore, the guide groove is V-shaped.

[0008] Furthermore, the second drive mechanism includes a second motor mounted on a second nut seat and a drive gear located outside the output shaft of the second motor, and the clutch block is provided with toothed surfaces that mesh with the drive gear.

[0009] By adopting the aforementioned technical solution, the beneficial effects of the present invention are: This 3D stone carving machine features a mounting frame with grooves on one side of the support frame, integrating a detachable and adjustable claw plate bracket, a center seat, and a rotating clamp. This allows the machine to quickly switch between planar and rotary carving modes without disassembling the worktable. When processing plate-shaped materials, it utilizes a multi-spindle mechanism and cutting tools for synchronous batch production. When processing cylindrical or irregularly shaped shafts, only the rightmost spindle mechanism needs to be activated to coordinate with the cutting tool movement. This design solves the problems of traditional equipment requiring additional rotary axes that encroach on planar travel, or the need to purchase dedicated four-axis equipment, resulting in large footprint, high cost, and high equipment idle rate.

[0010] Through the cooperation of the nut body, first nut seat, second nut seat, clutch block, and spring in the x-axis motion mechanism, when the idle moving plate moves to the edge to trigger the moving rod, the clutch block can be separated by the guide groove. The lead screw rotates at this position without driving the moving plate. This structure allows the excess machine head to be automatically stored on the side without the need for a complex independent servo control system when processing large-format stone, effectively avoiding processing interference between adjacent machine heads and expanding the usable processing area of ​​a single spindle. At the same time, the clutch structure can act as a hard limit protection when the machine head is accidentally squeezed, preventing overload of the first motor and structural damage.

[0011] To address the issues of traditional purely mechanical clutch structures being susceptible to vibration interference after the clutch block disengages and the repeated spring rebound causing tooth wear, this invention features toothed surfaces on the clutch block that mesh with gears driven by a second motor. When the clutch block disengages, the second motor provides a holding torque to actively lock the clutch block position, counteracting spring force interference and ensuring that the idle machine head does not experience displacement or vibration during processing. This electronically controlled auxiliary locking mechanism not only extends the service life of the clutch transmission components but also significantly improves the operational stability and processing accuracy of the equipment during long-term processing on a single spindle. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the structure of the present invention.

[0013] Figure 2 This is a top view schematic diagram of the structure of the present invention.

[0014] Figure 3 This is a partial structural schematic diagram of the present invention.

[0015] Figure 4 This is a schematic diagram of the partial structure of the present invention from the left.

[0016] Figure 5 This is a partial planar schematic diagram of the x-axis motion mechanism of the present invention.

[0017] Figure 6 This is a schematic diagram of the partial structure of the x-axis motion mechanism of the present invention in an exploded state.

[0018] Numbering on the map: 1. Support frame; 2. Motion frame; 3. Moving plate; 4. Spindle mechanism; 5. Z-axis motion mechanism; 6. X-axis motion mechanism; 7. Y-axis motion mechanism; 8. Tool; 9. Mounting frame; 10. Jaw plate bracket; 11. Center seat; 12. Rotary clamp; 13. First drive mechanism; 14. Groove; 601. Lead screw; 602. First motor; 603. Nut body; 604. First nut seat; 605. Second nut seat; 606. Rectangular hole; 607. Clutch block; 608. Spring; 609. Moving rod; 610. Guide groove; 611. Pin; 612. Second motor; 613. Drive gear; 614. Tooth surface. Detailed Implementation

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0020] refer to Figures 1 to 6This embodiment provides a three-dimensional stone carving machine, including a support frame 1, a motion frame 2 slidably disposed on both sides of the support frame 1, multiple movable plates 3 slidably disposed on the motion frame 2, a main spindle mechanism 4 disposed in front of each movable plate 3, a z-axis motion mechanism 5 disposed on the movable plate 3 and used to drive the main spindle mechanism 4 to move up and down, an x-axis motion mechanism 6 used to drive the movable plate 3 to move left and right on the motion frame 2, a y-axis motion mechanism 7 used to drive the motion frame 2 to move back and forth on the support frame 1, a cutting tool 8 disposed at the bottom of the main spindle mechanism 4, a mounting frame 9 disposed on the right side of the support frame 1, a detachable claw plate bracket 10 disposed on the top surface of the mounting frame 9, a center seat 11 disposed on the mounting frame 9 and on the side opposite to the claw plate bracket 10, a rotating clamp 12 rotatably disposed on the claw plate bracket 10, and a first drive mechanism 13 for rotating the rotating clamp 12. The top surface of the mounting frame 9 is provided with a groove 14 for bolt locking of the claw plate bracket 10 and the center seat 11.

[0021] During operation, stones with the same pattern to be carved simultaneously are fixed on the support frame 1. After completion, the y-axis motion mechanism 7 drives the spindle mechanism 4 to move back and forth via the motion frame 2. The x-axis motion mechanism 6 drives each moving plate 3 to move left and right, and the z-axis motion mechanism 5 drives the spindle mechanism 4 to move up and down. The carving machine carves the stone according to the set motion trajectory. When carving along the axial diameter of the stone, the stone is inserted into the rotating fixture 12. After completion, the position of the center seat 11 is adjusted so that it contacts the end of the stone furthest from the rotating fixture 12. Finally, it is fixed to the groove 14 on the top surface of the mounting frame 9 with bolts. During processing, the rightmost moving plate 3 and the spindle mechanism 4 on the motion frame 2 are moved above the rotating fixture 12. Then, the spindle mechanism 4 drives the tool 8 to rotate. During the processing, the first drive mechanism 13 drives the stone to rotate through the rotating fixture 12, and completes the processing of the stone by the tool 8 in the axial direction. Three-axis or four-axis processing can be selected according to the shape of the stone. When the stone is plate-shaped and three-axis processing is required, it is placed on the plane of the support frame 1. When the stone requires four-axis processing, it is placed on the rotating fixture 12 and fixed, thus completing the processing of different stones.

[0022] This invention breaks the limitation of traditional three-axis engraving machines that can only perform planar engraving by setting an installation frame 9 and related rotating clamps 12 and top seats 11 on the right side of the support frame 1. When processing slab-shaped stone, multiple spindle mechanisms 4 can perform three-axis batch processing at the same time, improving production efficiency. When it is necessary to process cylindrical or shaft-shaped stone, the stone only needs to be clamped between the rotating clamps 12 and the top seats 11, and the rightmost spindle mechanism 4 can be used to complete four-axis rotary engraving. One machine has two processing modes, reducing the purchase cost and space occupied by the equipment.

[0023] The groove 14 on the top surface of the mounting frame 9 allows the rotating clamp 12 and the top seat 11 to slide freely and be locked in the groove 14 by bolts. This allows the distance between the rotating clamp 12 and the top seat 11 to be flexibly adjusted according to the length of the stone in different axial diameter directions, so as to meet the processing needs of different specifications of stone.

[0024] The rotating clamp 12 is a three-jaw chuck or a four-jaw chuck. The three-jaw chuck can quickly and automatically center and stably clamp cylindrical workpieces; the four-jaw chuck can be used to clamp square or irregularly shaped shaft-type stone materials, further expanding the processing range of the engraving machine and ensuring concentricity and rotational stability during the processing.

[0025] The x-axis motion mechanism 6 includes a lead screw 601 rotatably mounted on the motion frame 2, a first motor 602 for driving the lead screw 601 to rotate, a nut body 603 located outside the lead screw 601 and behind each moving plate 3, a first nut seat 604 and a second nut seat 605 rotatably mounted outside the nut body 603, a rectangular hole 606 located outside the nut body 603, a clutch block 607 slidably mounted inside the second nut seat 605 and inserted into the rectangular hole 606, a spring 608 located inside the second nut seat 605 and on the top surface of the clutch block 607, and a spring 608 slidably mounted inside the second nut seat 605. The first nut seat 604 is connected to each of the moving plates 3 at its front end. The second nut seat 605 is provided with a second driving mechanism for driving longitudinal movement. The moving rod 609 passes through the left and right sides of the second nut seat 605. When two adjacent moving plates 3 are accidentally squeezed, the adjacent moving rods 609 touch each other and can also move inward to trigger the guide groove 610 to move the clutch block 607, thereby realizing clutch disengagement.

[0026] The guide groove 610 is V-shaped. The horizontal displacement of the moving rod 609 is smoothly transmitted through the V-shaped inclined surface of the guide groove 610, which in turn drives the pin 611 and the clutch block 607 to be pulled out vertically. This structure makes the separation more sensitive and avoids jamming.

[0027] In normal operation, the first motor 602 drives the lead screw 601 to rotate. Since the moving plate 3 is slidably mounted on the motion frame 2, the rotation of the lead screw 601 drives each moving plate 3 to move simultaneously via the first nut seat 604 and the second nut seat 605. When only one or a few moving plates 3 need to be controlled, the leftmost moving plate 3 is moved to the left side of the support frame 1 via the first motor 602 driving the lead screw 601. After completion, the moving rod 609 will contact the left side of the support frame 1 and move to the right side inside the second nut seat 605. Since the guide groove 610 is V-shaped, the pin 611 is moved forward, and the pin 611 will engage the clutch. Block 607 moves out of the rectangular hole 606 outside the nut body 603. The lead screw 601 will drive the nut body 603 to rotate on the outside. The first nut seat 604, the second nut seat 605 and the leftmost moving plate 3 will stop moving after reaching the edge. Another moving plate 3 adjacent to the leftmost moving plate 3 will continue to move to the left by rotating the lead screw 601 until the moving rod 609 inside the adjacent moving plate 3 contacts the leftmost moving plate 3. After completion, the position of each clutch block 607 will be fixed by the second drive mechanism. The two leftmost moving plates 3 will no longer move and will be fixed in the leftmost position, without affecting the movement of the right moving plate 3 and the main shaft mechanism 4.

[0028] When the engraving machine is carving a large area of ​​slab-shaped stone that requires a single spindle mechanism 4, the two leftmost movable plates 3 can be moved to the edge to avoid interference with the position of the single spindle mechanism 4 during use. If the movable plates 3 are moved to the edge of the motion frame 2, this structure can also protect the movable plates 3. In traditional single-screw 601 multi-head engraving machines, each spindle can only move synchronously. When processing large-format single-piece plates, the extra machine heads are prone to interference. This invention, by setting up structures such as nut body 603, clutch block 607, movable rod 609, and guide groove 610, when the leftmost movable plate 3 moves to the edge and touches the support frame 1, the movable rod 609 is squeezed and the guide groove 610 drives the clutch block 607 to disengage from the nut body 603, causing the screw 601 to idle at the machine head. This allows the idle movable plates 3 and spindle mechanism 4 to automatically stop at the edge, enabling the engraving machine to accommodate some machine heads as needed, freeing up a larger processing area for the single spindle mechanism 4 and avoiding physical interference between machine heads.

[0029] When the moving plate 3 moves to the edge of the motion frame 2, or when adjacent moving plates 3 come into contact with each other, the moving rod 609 will trigger the clutch block 607 to disengage and release force, causing the moving plate 3 to stop moving. This provides hard limit and anti-collision protection, preventing the first motor 602 from overloading, the lead screw 601 from deforming, or the structure from being damaged by the collision of the moving plate 3. Furthermore, it eliminates the need to equip each moving plate 3 with an independent drive motor and electronic servo system. Only one set of X-axis first motor 602, lead screw 601, and mechanical clutch structure is required to achieve synchronous movement of multiple machine heads and selective parking of a specified machine head, reducing manufacturing costs and eliminating the need for a complex electronic servo system.

[0030] The second drive mechanism includes a second motor 612 mounted on a second nut seat 605 and a drive gear 613 mounted on the outside of the output shaft of the second motor 612. The clutch block 607 is provided with a tooth surface 614 that meshes with the drive gear 613.

[0031] When the moving rod 609 moves the clutch block 607 backward via the pin 611, the drive gear 613 will not interfere with the clutch block 607. When the position of the clutch block 607 needs to be locked, the second motor 612 is energized to drive the drive gear 613 to apply force to the clutch block 607, and the spring 608 will no longer press the clutch block 607 forward and move it back to its original position.

[0032] When the movable plate 3 needs to stop or a collision occurs, the built-in movable rod 609 is displaced by pressure, using the V-shaped guide groove 610 to lift the pin 611, thereby overcoming the downward pressure of the spring 608 and driving the clutch block 607 to move backward, disengaging from the rectangular hole 606 on the outside of the nut body 603, cutting off the power transmission of the lead screw 601. At this time, the clutch block 607 is in the disengaged state. While the clutch block 607 is being lifted by pressure, the toothed surface 614 on the side of the clutch block 607 moves and enters the output of the second motor 612. The meshing range of the drive gear 613 on the shaft. At this time, the external CNC system controls the second motor 612 to be energized, and the drive gear 613 applies a reverse holding torque to the tooth surface 614. This holding torque can counteract the downward elastic force of the spring 608. Even if the built-in moving rod 609 loses its squeezing force due to the retraction of the adjacent moving plate 3, the clutch block 607 is still locked in the disengaged state by the second drive mechanism, so that the nut body 603 can rotate freely inside it, and the moving plate is kept stable and stationary.

[0033] When the stationary moving plate 3 needs to be reactivated, the second motor 612 rotates in the opposite direction to drive the gear 613, and the spring 608 presses down the clutch block 607, pressing the clutch block 607 back into the rectangular hole 606 of the nut body 603, thus restoring synchronous power transmission.

[0034] In the prior art, the clutch block 607 of a purely mechanical clutch structure is easily affected by machine processing vibration or slight changes in extrusion pressure after disengagement. This causes the spring 608 to repeatedly press the clutch block 607 back, which not only fails to achieve stable disengagement but also causes tooth wear between the clutch block 607 and the nut body 603 on the outside of the lead screw 601. The second drive mechanism of the present invention achieves rapid triggering and active locking. After the clutch block 607 completes disengagement, the second motor 612 actively intervenes to lock the clutch block 607, cutting off the dynamic interference of the spring 608 and ensuring that the idle machine head is absolutely stationary throughout the entire large-area processing cycle, which greatly extends the service life of the x-axis motion mechanism 6.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A three-dimensional stone carving machine, characterized in that, Includes a support frame (1), a motion frame (2) slidably disposed on both sides of the support frame (1), multiple movable plates (3) slidably disposed on the motion frame (2), a main shaft mechanism (4) disposed in front of each movable plate (3), a z-axis motion mechanism (5) disposed on the movable plate (3) and used to drive the main shaft mechanism (4) to move up and down, an x-axis motion mechanism (6) used to drive the movable plate (3) to move left and right on the motion frame (2), a y-axis motion mechanism (7) used to drive the motion frame (2) to move back and forth on the support frame (1), and a main shaft mechanism (4) disposed in front of each movable plate (3). The main spindle mechanism (4) includes a cutting tool (8) at the bottom, a mounting frame (9) on the right side of the support frame (1), a detachable claw plate bracket (10) on the top surface of the mounting frame (9), a center seat (11) on the mounting frame (9) and on the side opposite to the claw plate bracket (10), a rotating clamp (12) on the claw plate bracket (10), and a first drive mechanism (13) for rotating the rotating clamp (12). The top surface of the mounting frame (9) is provided with a groove (14) for bolting the claw plate bracket (10) and the center seat (11). The x-axis motion mechanism (6) includes a lead screw (601) rotatably mounted on the motion frame (2), a first motor (602) for driving the lead screw (601) to rotate, a nut body (603) located outside the lead screw (601) and behind each moving plate (3), a first nut seat (604) and a second nut seat (605) rotatably mounted outside the nut body (603), a rectangular hole (606) located outside the nut body (603), and a clutch slidably mounted in the second nut seat (605) and inserted into the rectangular hole (606). The clutch block (607), the spring (608) located in the second nut seat (605) and on the top surface of the clutch block (607), the moving rod (609) slidably located in the second nut seat (605), the guide groove (610) located in the middle of the moving rod (609), and the pin (611) located on the clutch block (607) and slidably engaged with the guide groove (610). The front end of the first nut seat (604) is connected to each moving plate (3), and the second nut seat (605) is provided with a second driving mechanism for driving longitudinal movement. The guide groove (610) is V-shaped.

2. The three-dimensional stone carving machine according to claim 1, characterized in that: The rotary clamp (12) is a three-jaw chuck or a four-jaw chuck.

3. A three-dimensional stone carving machine according to claim 1, characterized in that: The second drive mechanism includes a second motor (612) mounted on a second nut seat (605) and a drive gear (613) mounted on the outside of the output shaft of the second motor (612). The clutch block (607) is provided with a tooth surface (614) that meshes with the drive gear (613).

Images