A multi-surface machining fixture of a gantry machining center stand

Abstract

This invention discloses a multi-faceted machining fixture for a gantry machining center column, belonging to the field of fixture technology. Specifically, it includes a base, on the top of which are fitted a first rotating table, a second rotating table, and an electromagnetic chuck. The electromagnetic chuck is located inside the second rotating table and magnetically supports the column body. The second rotating table is located inside the first rotating table. This multi-faceted machining fixture for a gantry machining center column, by setting independently rotatable first and second rotating tables, drives servo-electric push rods and composite clamping plates on them respectively. After machining the top of the column body, the corresponding tables can be rotated sequentially to move the clamping components to non-cutting corners or end areas, thereby exposing the sides and front and rear end faces of the column, achieving continuous multi-faceted machining with a single clamping. This avoids repeated lifting and alignment, significantly shortens auxiliary time, and improves the production efficiency of the corresponding machining equipment.

Description

Technical Field

[0001] This invention relates to the field of fixture technology, specifically to a multi-faceted machining fixture for the column of a gantry machining center. Background Technology

[0002] The column of a gantry machining center is a key supporting component connecting the bed and the crossbeam. It is usually rectangular or box-shaped. Its sides need to be machined with multiple sets of high-precision features such as guide rail mounting surface, lead screw fixing surface, and inlay mating surface. The machining accuracy of the column directly determines the geometric accuracy and motion stability of the whole machine. Therefore, strict requirements are placed on the flatness, perpendicularity and relative position tolerance of multiple sides during the manufacturing process.

[0003] Currently, multi-axis CNC machine tools (such as gantry machining centers and five-axis linkage machining centers) have the capability to perform multi-face cutting in the same cycle. They can achieve continuous machining of different sides through rotary worktables or spindle tilting, significantly reducing errors caused by multiple clamping. However, existing fixtures are mostly set in fixed positions. For large workpieces such as columns, fixtures can usually only hold the positioning reference surface in a specific posture. When different sides of the column need to be machined, the fixed-position fixtures will interfere with the tool path or block the area to be machined, becoming the main obstacle in the machining process.

[0004] In addition, the column itself is quite heavy. If the traditional method of multiple flipping and adjustment is used to change the machining surface, not only is the flipping operation extremely difficult and poses a safety hazard, but the machining datum must be re-aligned after each reclamping, resulting in lengthy auxiliary time and low machining efficiency. At the same time, multiple alignments can easily introduce cumulative errors, affecting the final machining accuracy. Summary of the Invention

[0005] This invention provides a multi-faceted machining fixture for the column of a gantry machining center, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-faceted machining fixture for a gantry machining center column, comprising a base, a first rotating table, a second rotating table, and an electromagnetic chuck fitted on the top of the base. The electromagnetic chuck is located inside the second rotating table and supports the column body via magnetic attraction. The second rotating table is located inside the first rotating table. Both the first and second rotating tables are capable of concentric rotation adjustment relative to the base. Several support seats are arranged on the top of both the first and second rotating tables. The top of the base is provided with a clamping component, and the output structure of the two clamping components in relative positions clamps and positions the column body. Several support seats and their associated clamping components on the top of the first and second rotating tables can be moved to the non-cutting area of ​​the column body for avoidance clamping by rotation adjustment, so as to meet the simultaneous processing of multiple sides of the column body. Several second limiting electromagnets are provided at the bottom of the first rotating table and embedded in the corresponding area of ​​the top of the base, and several first limiting electromagnets are provided at the bottom of the second rotating table and embedded in the corresponding area of ​​the top of the base.

[0007] Preferably, the clamping component includes a servo electric push rod and a composite clamping plate, and the servo electric push rod is installed on the top of the corresponding support and is drivenly connected to the composite clamping plate, and a clearance gap is provided between the support on the top of the first rotating table and the top of the second rotating table.

[0008] Preferably, the composite clamping plate includes a support plate and a clamping plate body. The top of the support plate is provided with a semi-open arc groove, and the structure of the clamping plate body away from the center of the base is engaged inside the semi-open arc groove and provided with a first clearance hole. A second clearance hole aligned with the first clearance hole is provided inside the semi-open arc groove, and a long bolt is fitted together with the first clearance hole and the second clearance hole. One end of the long bolt passes through to the bottom outer side of the support plate and is threaded with a limit nut. The structure of the support plate away from the center of the base is driven and connected to the output end of the servo electric push rod.

[0009] Preferably, the top of the first clearance hole is provided with a square groove that communicates with its own space, and a limiting block that is fixedly sleeved on the other end surface of the long bolt is engaged inside the square groove. The clamping plate body is hinged to the support plate by the long bolt and the limiting nut, and the long bolt and the limiting nut are used as limiting supports to always be able to be horizontally attached to the side of the column body for clamping.

[0010] Preferably, the clamping plate body has two opposing assembly holes on its inner side near the center of the base. Each assembly hole is fitted with a pressure sensing component. The pressure sensing component is attached to the side of the column body along with the clamping plate body and outputs real-time pressure data. The real-time pressure data is compared with preset standard data to provide feedback on whether the clamping plate body and the column body are in contact and whether the vibration and impact on the clamping plate body exceed the standard.

[0011] Preferably, the pressure-sensing assembly includes a guide ring, a T-shaped guide rod, a pressure sensor, and a return spring. The guide ring and the pressure sensor are respectively fixedly fitted inside the two ends of the assembly hole. One end of the T-shaped guide rod is engaged with the middle of the guide ring, and the other end of the T-shaped guide rod is in contact with the pressure-sensing surface of the pressure sensor. The return spring is fitted on the outer side of the middle of the T-shaped guide rod, and both ends of the return spring are respectively fixed to the surface of one end of the T-shaped guide rod and the surface of the guide ring.

[0012] Preferably, one end of the T-shaped guide rod is provided with a rounded corner joint, and the other end of the T-shaped guide rod is provided with an arc-shaped protrusion. When not in use, one end of the T-shaped guide rod moves out of the assembly hole under the elastic traction of the return spring.

[0013] Preferably, the top of the base is provided with a first annular step and a second annular step, the first rotating platform is fitted inside the first annular step, and the second rotating platform is fitted inside the second annular step. Bearings and sealing rings are nested and installed at the fitting points of the inner ring structure of the first rotating platform and the inner ring inner wall of the first annular step, and at the fitting points of the inner ring structure of the second rotating platform and the inner ring inner wall of the second annular step.

[0014] Preferably, the bottom of the first rotating platform and the bottom of the second rotating platform are provided with annular grooves, and annular slide rails fixed on the inner wall of the first annular step or the inner wall of the second annular step are engaged in the annular grooves.

[0015] Preferably, the number of the first limiting electromagnet and the second limiting electromagnet is less than four, and they are respectively arranged at the top of the first annular step and the top of the second annular step.

[0016] The present invention has the following beneficial effects: 1. This gantry machining center's column multi-face machining fixture, through the independently rotatable first and second rotating tables, drives servo-electric push rods and composite clamping plates on them respectively. After machining the top of the column body, the corresponding tables can be rotated sequentially to move the clamping components to non-cutting corners or end areas, thereby exposing the sides and front and rear end faces of the column, achieving continuous multi-face machining with a single clamping. This avoids repeated hoisting and alignment, significantly shortens auxiliary time, and improves the production efficiency of the corresponding machining equipment.

[0017] 2. The multi-faceted machining fixture for the column of this gantry machining center features a composite clamping plate consisting of a support plate, a clamping plate body, a long bolt, and a limit nut. After loosening the limit nut, the clamping plate body can rotate around the long bolt. When it re-fits the column body surface after rotation to avoid obstruction, the angle can be flexibly adjusted, and then the limit nut is used to lock and fix it. This structure ensures that the clamping plate body always maintains a horizontal fit with the side of the column, eliminating point or line contact caused by column shape deviation or position change after rotation, resulting in stable and reliable clamping.

[0018] 3. The multi-faceted machining fixture for the column of this gantry machining center is equipped with a pressure-sensing component on the clamping plate body, including a T-shaped guide rod, a pressure sensor, and a return spring. During clamping, the T-shaped guide rod contacts the column before the clamping plate body. The two pressure sensors output the same or similar pressure data, which can accurately determine whether the fit is complete. During machining, the pressure sensor monitors the vibration and impact transmitted from the column in real time. When the pressure frequently exceeds the preset maximum value, it indicates that the tool is severely worn and needs to be stopped and replaced in time, thereby effectively reducing the number of defective products.

[0019] 4. The multi-faceted machining fixture of the column of the gantry machining center adopts the engagement of annular slide rail and annular slide groove to provide auxiliary support and guiding constraints for the rotation adjustment of the first and second rotating tables, thereby improving the stability of movement. At the same time, the first and second limit electromagnets magnetically lock the two tables in the non-moving state to prevent displacement caused by cutting force. The bearings and sealing rings reduce rotational friction and prevent dust, ensuring the long-term repeatability of the positioning accuracy of the entire device. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention; Figure 2 This is a front view schematic diagram of the structure of the present invention; Figure 3 This is a cross-sectional schematic diagram of the structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a front view of the first rotating platform in the structure of the present invention; Figure 6 This is a front view schematic diagram of the second rotating platform in the structure of the present invention; Figure 7 This is a three-dimensional schematic diagram of the composite clamping plate in the structure of the present invention; Figure 8 This is a cross-sectional schematic diagram of the composite clamping plate in the structure of the present invention; Figure 9 This is an enlarged schematic diagram of the clamping plate body in the structure of the present invention; Figure 10 This is a partial cross-sectional schematic diagram of the pressure-sensing component in the structure of the present invention; Figure 11 This is a top view of the first limiting electromagnet in the structure of the present invention; Figure 12 This is a schematic diagram of the top surface machining of the column body in the structure of the present invention; Figure 13 This is a schematic diagram showing the processing of the left or right side of the column body in the structure of this invention; Figure 14 This is a schematic diagram showing the processing of the front or rear end of the column body in the structure of this invention.

[0021] In the diagram: 1. Base; 2. First rotating platform; 3. Second rotating platform; 4. Electromagnetic chuck; 5. Column body; 6. Support base; 7. Servo electric push rod; 8. Composite clamping plate; 81. Support plate; 82. Clamping plate body; 83. Long bolt; 84. Limit nut; 85. Assembly hole; 86. Square slot; 87. Limit block; 9. Pressure sensing component; 91. Guide ring; 92. T-shaped guide rod; 93. Pressure sensor; 94. Return spring; 10. First limit electromagnet; 11. Second limit electromagnet; 12. Circular slide rail; 13. Sealing ring. Detailed Implementation

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

[0023] Please see Figures 1-14 A multi-faceted machining fixture for a column of a gantry machining center includes a base 1. A first rotating table 2, a second rotating table 3, and an electromagnetic chuck 4 are mounted on the top of the base 1. The electromagnetic chuck 4 is located inside the second rotating table 3 and supports the column body 5 by magnetic attraction. The second rotating table 3 is located inside the first rotating table 2. Both the first rotating table 2 and the second rotating table 3 can be rotated concentrically relative to the base 1. Several support seats 6 are arranged on the top of the first rotating table 2 and the top of the second rotating table 3. Clamping components are provided on the top of the support seats 6. The output structures of the two clamping components in relative positions clamp and position the column body 5. The several support seats 6 and their associated clamping components on the top of the first rotating table 2 and the top of the second rotating table 3 can be moved to the non-cutting area of ​​the column body 5 by rotational adjustment for avoidance clamping, so as to meet the simultaneous processing of multiple sides of the column body 5. The clamping component includes a servo electric push rod 7 and a composite clamping plate 8. The servo electric push rod 7 is installed on the top of the corresponding support 6 and is driven to connect with the composite clamping plate 8. This provides a specific solution for implementing the clamping component, which meets the requirements of automated operation. Furthermore, a clearance is provided between the support 6 on the top of the first rotating table 2 and the top of the second rotating table 3 to avoid structural interference and ensure the smooth operation of the overall device.

[0024] Preferably, the composite clamping plate 8 includes a support plate 81 and a clamping plate body 82. The top of the support plate 81 is provided with a semi-open arc groove, and the structure of the clamping plate body 82 away from the center of the base 1 is engaged inside the semi-open arc groove and provided with a first clearance hole. The semi-open arc groove is provided with a second clearance hole aligned with the first clearance hole, and the first clearance hole and the second clearance hole are fitted together with a long bolt 83. One end of the long bolt 83 passes through to the bottom outer side of the support plate 81 and is threadedly connected to a limit nut 84. The long bolt 83 and the limit nut 84 can be repeatedly locked and loosened or disassembled, thereby meeting the angle adjustment requirements of the clamping plate body 82 relative to the support plate 81. The structure of the support plate 81 away from the center of the base 1 is driven and connected to the output end of the servo electric push rod 7. The top of the first clearance hole is provided with a square groove 86 that communicates with its own space, and a limiting block 87 that is fixedly sleeved on the other end surface of the long bolt 83 is engaged inside the square groove 86. The clamping plate body 82 is hinged to the support plate 81 through the long bolt 83 and the limiting nut 84, and the long bolt 83 and the limiting nut 84 serve as limiting supports to always be able to be horizontally attached to the side of the column body 5 to ensure the clamping and limiting effect on the column body 5. The bottom of the first rotating platform 2 is provided with a number of second limiting electromagnets 11 embedded in the corresponding area of ​​the top of the base 1, and the bottom of the second rotating platform 3 is provided with a number of first limiting electromagnets 10 embedded in the corresponding area of ​​the top of the base 1.

[0025] The above technical solution will be described below through a specific embodiment: S1. Install the base 1 and the multi-faceted machining fixture formed by the structural assembly set on the base 1 on the worktable of the gantry machining center or the five-axis linkage machining center and calibrate it. S2. The column body 5 to be processed is hoisted onto the top surface of the electromagnetic chuck 4. At this time, the electromagnetic chuck 4 is in the closed state. Then, the four servo electric push rods 7 are started synchronously. The output ends of the four servo electric push rods 7 drive their respective composite clamping plates 8 to fit against the surface of the corresponding area of ​​the column body 5. Thus, the four composite clamping plates 8 are paired up and clamp the two sides and the front and rear ends of the column body 5 respectively. The specific control of the four servo electric push rods 7 can be assisted by the existing servo driver. Another method for calibrating the position of the column body 5 is to use existing calibration tools, such as dial indicators, to center and adjust the column body 5. After that, the electromagnetic chuck 4 is activated first to magnetically limit the position of the calibrated column body 5. Then, the four servo electric push rods 7 are activated. The output ends of the four servo electric push rods 7 drive their respective composite clamping plates 8 to fit against the surface of the corresponding area of ​​the column body 5. This allows the four composite clamping plates 8 to clamp and limit the column body 5 in pairs. After that, the electromagnetic chuck 4 is turned off. S3. After being clamped, the top of the column body 5 is in an open state. Then, the cutting tool is controlled by the gantry machining center or the five-axis linkage machining center to cut the corresponding position on the top of the column body 5. S4. After the top of the column body 5 is cut and processed, when it is necessary to cut and process the two sides of the column body 5, use an air gun with compressed air to clean the waste covering the top surface of the electromagnetic chuck 4 and the top surface of the base 1. After completion, turn on the electromagnetic chuck 4 and let the electromagnetic chuck 4 magnetically limit the column body 5 again. S5. Turn off the four second limit electromagnets 11 that were originally in the open state, restore the flexibility of the rotation adjustment of the first rotating table 2, turn off the two servo electric push rods 7 set on the top of the first rotating table 2, rotate the first rotating table 2, so that the first rotating table 2 drives the two servo electric push rods 7 set on its top and the composite clamping plate 8 associated with the two servo electric push rods 7 to rotate horizontally until the composite clamping plate 8 moves to the non-processed corner area of ​​the column body 5. S6. Tighten the limiting nuts 84 inside the two composite clamping plates 8 after rotation, so that the limiting nuts 84 are temporarily away from the support plate 81 to make room, thereby restoring the flexibility of the clamping plate body 82 to rotate relative to the support plate 81. Start the servo electric push rod 7, so that the servo electric push rod 7 drives the adjusted composite clamping plate 8 to approach the column body 5 at low speed until the side of the corresponding position of the clamping plate body 82 is in contact with the surface of the column body 5. Close the servo electric push rod 7, reset and lock the limiting nuts 84, so that the limiting nuts 84, together with the long bolts 83, limit and fix the adjusted clamping plate body 82 again. Similarly, the other composite clamping plate 8 is operated through the above steps. After completion, close the two servo electric push rods 7, so that the two servo electric push rods 7 drive their respective corresponding composite clamping plates 8 to reset and move. S7. After adjusting the two servo electric push rods 7 and the two composite clamping plates 8 associated with the first rotary table 2, restart the two servo electric push rods 7. The two servo electric push rods 7 drive their respective composite clamping plates 8 to clamp and limit the two sides of the column body 5 again. In this way, the stability of the column body 5 is fully guaranteed without interfering with the subsequent cutting process. After completion, turn off the electromagnetic chuck 4. S8. After being re-clamped, the designated areas on both sides of the column body 5 are in an open state. Subsequently, the cutting tool is controlled by the gantry machining center or the five-axis linkage machining center to perform cutting machining on the corresponding positions on both sides of the column body 5. S9. When the designated positions on both sides of the column body 5 are cut and processed, and the end faces of the front and rear ends of the column body 5 need to be cut and processed, the waste covering the top surface of the electromagnetic chuck 4 and the top surface of the base 1 is cleaned by using an air gun with compressed air. After completion, the electromagnetic chuck 4 is turned on and the electromagnetic chuck 4 is used to magnetically limit the column body 5 again. S10. Close the four first limit electromagnets 10 that were originally in the open state, restore the flexibility of the rotation adjustment of the second rotating table 3, close the two servo electric push rods 7 set on the top of the second rotating table 3, rotate the second rotating table 3, so that the second rotating table 3 drives the two servo electric push rods 7 set on its top and the composite clamping plate 8 associated with the two servo electric push rods 7 to rotate horizontally until the composite clamping plate 8 moves to the non-processed side area of ​​the column body 5. S11. Repeat the operation similar to step S6 above, first restore the flexibility of the two composite clamping plates 8 associated with the second rotating table 3, and after the servo electric push rods 7 corresponding to each of the two composite clamping plates 8 drive them to fit the side of the column body 5, then lock and limit the two composite clamping plates 8 again. S12. Restart the two servo electric push rods 7 associated with the second rotating table 3. The two servo electric push rods 7 drive their respective composite clamping plates 8 to re-clamp and limit the column body 5. After completion, turn off the electromagnetic chuck 4. S13. After being re-clamped, the designated areas at the front and rear ends of the column body 5 are in an open state. Then, the cutting tool is controlled by the gantry machining center or five-axis linkage machining center to cut the corresponding positions on both sides of the column body 5. After completion, the cutting of all surfaces to be processed on the column body 5 is achieved. Subsequently, the four servo electric push rods 7 are turned off, and the four servo electric push rods 7 drive their respective composite clamping plates 8 to reset and move. Then, the processed column body 5 is moved out of the top of the electromagnetic chuck 4 using the existing hoisting equipment. After completion, the next column body 5 to be processed is hoisted back onto the top of the electromagnetic chuck 4. The above steps are repeated.

[0026] Please see Figures 10-14 Two opposing assembly holes 85 are provided on the inner side of the clamping plate body 82 near the center of the base 1. Each assembly hole 85 is fitted with a pressure sensing component 9. The pressure sensing component 9 fits against the side of the column body 5 along with the clamping plate body 82 and outputs real-time pressure data. The real-time pressure data is compared with the preset standard data to provide feedback on whether the clamping plate body 82 fits against the column body 5 and whether the vibration and impact on the clamping plate body 82 exceed the standard, thereby further optimizing the overall device performance and meeting different usage requirements. The pressure-sensing assembly 9 includes a guide ring 91, a T-shaped guide rod 92, a pressure sensor 93, and a return spring 94. The guide ring 91 and the pressure sensor 93 are respectively fixedly fitted inside the two ends of the assembly hole 85. One end of the T-shaped guide rod 92 is engaged with the middle of the guide ring 91, and the other end of the T-shaped guide rod 92 is in contact with the pressure-sensing surface of the pressure sensor 93. The return spring 94 is fitted on the outer side of the middle of the T-shaped guide rod 92, and the two ends of the return spring 94 are respectively fixed to the surface of one end of the T-shaped guide rod 92 and the surface of the guide ring 91. This provides a specific implementation of the pressure-sensing assembly 9, which meets the needs of further automation. One end of the T-shaped guide rod 92 is designed with a rounded corner joint to prevent scratches after the T-shaped guide rod 92 contacts the column body 5. The other end of the T-shaped guide rod 92 is provided with an arc-shaped protrusion to concentrate pressure on the sensor pressure-sensing surface. When not in use, one end of the T-shaped guide rod 92 moves out of the assembly hole 85 under the elastic traction of the return spring 94, and can then contact the surface of the column body 5 before the clamping plate body 82, achieving a good pressure measurement effect.

[0027] When using it, the pressure-sensing component 9 is used in two stages; Phase 1: During the process of re-attaching the clamping plate body 82 to the surface of the column body 5 after rotation and adjustment, the T-shaped guide rod 92 contacts the surface of the column body 5 at the corresponding position before the clamping plate body 82. As the clamping plate body 82 moves further, the T-shaped guide rod 92 will also apply pressure to the pressure sensor 93 simultaneously. When the two pressure sensors 93 associated with the clamping plate body 82 output the same or very similar pressure data, it indicates that the surface of the clamping plate body 82 and the column body 5 are in contact. Phase Two: During the cutting process of the column body 5, which is clamped and limited by multiple composite clamping plates 8 and machined by a gantry machining center or a five-axis linkage machining center, the T-shaped guide rod 92 synchronously receives the vibration energy of the column body 5 being cut and transmits it to the pressure sensor 93, which displays the pressure data in real time. When the pressure data output by the pressure sensor 93 frequently exceeds the preset maximum pressure value at a certain stage, it indicates that the tool used by the gantry machining center or the five-axis linkage machining center has experienced significant wear and reduced cutting ability. The machine should be stopped in time for replacement and the column body 5 should be inspected to reduce the probability of defective products during the machining process of the column body 5.

[0028] Please see Figure 4 , Figure 11 The base 1 has a first annular step and a second annular step on its top. The first rotating platform 2 is fitted inside the first annular step, and the second rotating platform 3 is fitted inside the second annular step. Bearings and sealing rings 13 are nested and installed at the fitting points of the inner ring structure of the first rotating platform 2 and the inner ring wall of the first annular step, and at the fitting points of the inner ring structure of the second rotating platform 3 and the inner ring wall of the second annular step. The bottom of the first rotating platform 2 and the bottom of the second rotating platform 3 are provided with annular grooves, and annular slide rails 12 fixed on the inner wall of the first annular step or the inner wall of the second annular step are engaged in the annular grooves. By using the engagement of the annular slide rails 12 and the annular grooves, auxiliary support and guiding constraints can be provided for the rotation adjustment of the first rotating platform 2 or the second rotating platform 3. The number of the first limiting electromagnet 10 and the second limiting electromagnet 11 is less than four, and they are arranged on the top of the first annular step and the top of the second annular step, respectively, to ensure the limiting effect on the first rotating platform 2 and the second rotating platform 3 in the non-moving state.

[0029] In use, as an auxiliary condition, the annular slide rail 12 is synchronously engaged with the annular slide groove during the rotation adjustment of the first rotating platform 2 or the second rotating platform 3, thereby improving the stability of the first rotating platform 2 or the second rotating platform 3 during rotation. Similarly, the multiple first limiting electromagnets 10 and multiple second limiting electromagnets 11 can fully guarantee the limiting connection strength of the first rotating platform 2 and the second rotating platform 3 in the non-moving state, ensuring the continuous stability effect during the clamping process.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-faceted machining fixture for a gantry machining center column, comprising a base (1), characterized in that: The base (1) is fitted with a first rotating platform (2), a second rotating platform (3), and an electromagnetic chuck (4). The electromagnetic chuck (4) is located inside the second rotating platform (3) and supports the column body (5) by magnetic attraction. The second rotating platform (3) is located inside the first rotating platform (2). Both the first rotating platform (2) and the second rotating platform (3) can be rotated concentrically relative to the base (1). Several support seats (6) are arranged on the top of the first rotating platform (2) and the top of the second rotating platform (3). The top of the support seats (6) is provided with clamping components, which are in relative positions. The output structure of the two clamping components clamps and positions the column body (5). The support seats (6) and their associated clamping components on the top of the first rotating table (2) and the top of the second rotating table (3) can be moved to the non-cutting area of ​​the column body (5) by rotation adjustment for avoidance clamping, so as to meet the simultaneous processing of multiple sides of the column body (5). The bottom of the first rotating table (2) is provided with several second limiting electromagnets (11) embedded in the corresponding area of ​​the top of the base (1), and the bottom of the second rotating table (3) is provided with several first limiting electromagnets (10) embedded in the corresponding area of ​​the top of the base (1).

2. The multi-faceted machining fixture for the column of a gantry machining center according to claim 1, characterized in that: The clamping component includes a servo electric push rod (7) and a composite clamping plate (8). The servo electric push rod (7) is installed on the top of the corresponding support base (6) and is driven to connect with the composite clamping plate (8). A clearance gap is provided between the support base (6) on the top of the first rotating table (2) and the top of the second rotating table (3).

3. The multi-faceted machining fixture for the column of a gantry machining center according to claim 2, characterized in that: The composite clamping plate (8) includes a support plate (81) and a clamping plate body (82). The top of the support plate (81) is provided with a semi-open arc groove, and the structure of the clamping plate body (82) away from the center of the base (1) is engaged in the semi-open arc groove and provided with a first clearance hole. The semi-open arc groove is provided with a second clearance hole aligned with the first clearance hole, and the first clearance hole and the second clearance hole are fitted with a long bolt (83). One end of the long bolt (83) passes through to the bottom outside of the support plate (81) and is threaded with a limit nut (84). The structure of the support plate (81) away from the center of the base (1) is driven and connected to the output end of the servo electric push rod (7).

4. A multi-faceted machining fixture for a gantry machining center column according to claim 3, characterized in that: The top of the first clearance hole is provided with a square groove (86) that communicates with its own space, and a limiting block (87) is fixedly sleeved on the other end surface of the long bolt (83) inside the square groove (86). The clamping plate body (82) is hinged to the support plate (81) through the long bolt (83) and the limiting nut (84), and the long bolt (83) and the limiting nut (84) are used as limiting supports to always be able to be horizontally attached to the side of the column body (5).

5. A multi-faceted machining fixture for a gantry machining center column according to claim 3, characterized in that: The clamping plate body (82) has two opposing assembly holes (85) on its inner side near the center of the base (1). Each assembly hole (85) is fitted with a pressure sensing component (9). The pressure sensing component (9) is attached to the side of the column body (5) along with the clamping plate body (82) and outputs real-time pressure data. The real-time pressure data is compared with the preset standard data to provide feedback on whether the clamping plate body (82) and the column body (5) are in contact and whether the vibration and impact on the clamping plate body (82) exceed the standard.

6. A multi-faceted machining fixture for a gantry machining center column according to claim 5, characterized in that: The pressure-sensing assembly (9) includes a guide ring (91), a T-shaped guide rod (92), a pressure sensor (93), and a return spring (94). The guide ring (91) and the pressure sensor (93) are respectively fixedly fitted on the inner sides of both ends of the assembly hole (85). One end of the T-shaped guide rod (92) is engaged with the middle part of the guide ring (91), and the other end of the T-shaped guide rod (92) is in contact with the pressure-sensing surface of the pressure sensor (93). The return spring (94) is fitted on the outer side of the middle part of the T-shaped guide rod (92), and the two ends of the return spring (94) are respectively fixed on the surface of one end of the T-shaped guide rod (92) and the surface of the guide ring (91).

7. A multi-faceted machining fixture for a gantry machining center column according to claim 6, characterized in that: One end of the T-shaped guide rod (92) is set with a rounded corner joint, and the other end of the T-shaped guide rod (92) is provided with an arc-shaped protrusion. When not in use, one end of the T-shaped guide rod (92) moves out of the assembly hole (85) under the elastic traction of the return spring (94).

8. A multi-faceted machining fixture for a gantry machining center column according to claim 1, characterized in that: The base (1) is provided with a first annular step and a second annular step at its top. The first rotating platform (2) is fitted inside the first annular step, and the second rotating platform (3) is fitted inside the second annular step. Bearings and sealing rings (13) are nested at the fitting points of the inner ring structure of the first rotating platform (2) and the inner ring inner wall of the first annular step, and at the fitting points of the inner ring structure of the second rotating platform (3) and the inner ring inner wall of the second annular step.

9. A multi-faceted machining fixture for a gantry machining center column according to claim 8, characterized in that: The bottom of the first rotating platform (2) and the bottom of the second rotating platform (3) are provided with annular grooves, and annular slide rails (12) fixed on the inner wall of the first annular step or the inner wall of the second annular step are engaged in the annular grooves.

10. A multi-faceted machining fixture for a gantry machining center column according to claim 8, characterized in that: The number of the first limiting electromagnet (10) and the second limiting electromagnet (11) is less than four, and they are respectively arranged at the top of the first annular step and the top of the second annular step.

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