Numerical control planer type milling machine with auxiliary machining mechanism

Abstract

The application belongs to the technical field of numerical control planer type milling machine, in particular to a numerical control planer type milling machine with auxiliary machining mechanism, which comprises a machine table and a gantry multi-axis mechanism installed on the machine table, a machining assembly movably installed on the gantry multi-axis mechanism, and an auxiliary workbench detachably installed on the machine table, wherein the auxiliary workbench comprises an installation base plate and two cavity tables, a bearing table is movably installed above the cavity table, a locking mechanism is installed inside the bearing table, the auxiliary workbench further comprises two coaxial moving mechanisms, the two bearing tables above the two cavity tables are synchronously moved by driving the coaxial moving mechanisms, until the distance between the two locking mechanisms is consistent with the center distance of the two circular grooves of the metal cavity, at this time, the metal cavity is placed on the two bearing tables, the machining position of the metal cavity is confirmed by the locking mechanism, the machining position of the next group of metal cavities can be quickly determined by the above-mentioned method for milling work, and the machining efficiency can be effectively improved by this method.

Description

Technical Field

[0001] This invention belongs to the field of CNC gantry milling machines, specifically a CNC gantry milling machine equipped with auxiliary machining mechanisms. Background Technology

[0002] The CNC gantry milling machine uses the machine base as its support platform, with a gantry frame spanning across it. The crossbeam and double columns form a rigid gantry structure, ensuring high rigidity and vibration resistance of the entire machine. The milling assembly is mounted on the crossbeam and can move along multiple axes (X, Y, Z). Before machining, the workpiece is automatically scanned along its contour by the edge-finding mechanism loaded onto the milling assembly, accurately capturing the edges and achieving automatic tool setting and position compensation during machining. Subsequently, the milling spindle is driven to change the required tools, performing multiple machining operations from rough milling to semi-finish milling and finish milling on the workpiece.

[0003] A patent document with announcement number CN221289662U discloses a clamping type gantry milling machine, including a gantry milling machine body, a C-shaped push rod, and symmetrically movable clamping plates on the left and right sides. The front and back of the top of the gantry milling machine body are symmetrically provided with movable slots. A gripper assembly is movably connected to the back of the gantry milling machine body. A hydraulic lifting rod is fixedly connected to the back of the gantry milling machine body. A chip removal assembly is provided on the left side of the top of the gantry milling machine body. An exhaust fan is fixedly connected to the bottom of the left side of the chip removal assembly.

[0004] In traditional techniques, when machining workpieces such as metal cavities, the top edge and outer side of the frame need to be milled. During this process, the milling cutter is located on the outside of the frame. Therefore, when machining metal cavities in the traditional way, an auxiliary worktable is needed to elevate the workpiece so that the milling cutter can machine the outer side and top edge of the frame. Since each set of cavities needs to independently perform the edge finding and machining process after clamping, and the same steps are repeated for the next set, some non-cutting time is wasted on repeated positioning, which seriously restricts the machining efficiency.

[0005] Therefore, the present invention provides a CNC gantry milling machine with an auxiliary machining mechanism to solve the problems in the background art. Summary of the Invention

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a CNC gantry milling machine with an auxiliary machining mechanism, including a machine base and a gantry multi-axis mechanism mounted on the machine base. A machining component is movably mounted on the gantry multi-axis mechanism. The machining component can replace various cutting tools to machine a metal cavity. An auxiliary worktable is detachably mounted on the machine base. A metal frame is placed on the auxiliary worktable. The metal frame has symmetrically distributed slots for clamping inside. The auxiliary workbench includes a mounting base plate that is detachably mounted on the machine base and two cavity platforms that are fixedly mounted on the mounting base plate. A support platform is displaced and mounted above the cavity platform. A locking mechanism is installed inside the support platform. The auxiliary workbench also includes two coaxial moving mechanisms installed on the symmetrical sides of the two cavity platforms. The two coaxial moving mechanisms are used to simultaneously drive the movement of the two support platforms above the two cavity platforms.

[0007] Preferably, the gantry multi-axis mechanism includes a lifting frame for driving the lifting of the processing components and a displacement frame for driving the translation of the displacement frame. Multiple chip removal slots are provided above the machine base, and the mounting base plate is detachably mounted above the machine base through the multiple chip removal slots.

[0008] Preferably, the support platform includes a platform, and a chip removal groove three and a plurality of chip removal grooves two are provided on the upper part of the platform. The width of the chip removal groove three is greater than the width of the chip removal groove two. The locking mechanism is installed inside the chip removal groove three. The two locking mechanisms are symmetrically distributed above the two support platforms with the center line of the mounting base as the center.

[0009] Preferably, sliding plates are fixedly installed on both sides of the platform, and the sliding plates are slidably installed on the side of the cavity platform. The sliding plates are connected to a coaxial moving mechanism.

[0010] Preferably, the coaxial moving mechanism includes a second displacement bar fixedly installed below one side of the sliding plate and a first displacement bar fixedly installed above one side of another set of the sliding plates on the same side. The first and second displacement bars are close to each other and have racks installed on their opposite end faces. The coaxial moving mechanism has a drive gear installed inside by electric drive. The drive gear is located between the first and second displacement bars, and the drive gear, the second displacement bar, and the first displacement bar are meshed by gears.

[0011] Preferably, sliding grooves are provided on both sides of the cavity platform, the sliding plate is slidably installed on the side of the sliding groove, and dustproof elastic strips are also installed on both sides of the sliding plate. The dustproof elastic strips cover the outside of the sliding groove, and one end of the dustproof elastic strips is connected to the outside of the cavity platform.

[0012] Preferably, a coordinating mechanism is also installed above the mounting base plate. The coordinating mechanism is located in the middle of the two cavity platforms. The coordinating mechanism includes a fixed platform and a lifting platform above the fixed platform. Multiple lifting components are installed between the fixed platform and the lifting platform. Each lifting component consists of a telescopic rod and a dustproof telescopic sleeve fitted on the outside.

[0013] Preferably, the locking mechanism includes a fixing block and a mounting groove formed on the fixing block. A positioning component and a locking component are installed inside the mounting groove, and the locking component is positioned above the positioning component.

[0014] Preferably, the positioning component includes a lifting block one and a lifting component two fixedly installed below the lifting block one. Multiple arc-shaped moving blocks are movably installed on the outer side of the lifting block one. An elastic arc-shaped strip is installed on the outward side of the arc-shaped moving blocks. Multiple telescopic components are provided on the outer side of the lifting block one. The lifting block one is connected to multiple corresponding arc-shaped moving blocks through the multiple telescopic components. The lifting component two and the multiple telescopic components are composed of telescopic rods and dustproof telescopic sleeves fitted on the outer side.

[0015] Preferably, the locking component includes a second lifting block and a plurality of locking arc blocks movably installed on the outside of the second lifting block. A third lifting component is installed on the lower side of the second lifting block, and the lower end of the third lifting component is connected to the first lifting block. The thickness of the plurality of locking arc blocks is greater than the thickness of the second lifting block. A plurality of telescopic components are provided on the outside of the second lifting block. The second lifting block is connected to a plurality of corresponding locking arc blocks through the plurality of telescopic components. The third lifting component and the plurality of telescopic components are composed of a telescopic rod and a dustproof telescopic sleeve fitted on the outside.

[0016] The beneficial effects of this invention are as follows: 1. The present invention discloses a CNC gantry milling machine with an auxiliary machining mechanism. By calculating the center distance between two symmetrically opened circular slots in a metal cavity, a coaxial moving mechanism is driven to allow two support platforms above the two cavity platforms to move synchronously towards each other or synchronously away from each other, i.e., increasing or decreasing the distance between the two support platforms until the distance between the two locking mechanisms is consistent with the center distance between the two circular slots in the metal cavity. At this point, the metal cavity is placed on the two support platforms, with the two circular slots distributed above the locking mechanisms, and the locking mechanisms positioned at the center of the circular slots. The locking mechanisms confirm the machining position of the metal cavity, thus eliminating the complex step of edge finding. During the process of confirming the position of the metal cavity, the machining assembly can be loaded with the required cutting tools. Subsequently, the gantry multi-axis mechanism can drive the machining assembly to move to the pre-machined position, further shortening the machining time. After the machining and unloading of this set of metal cavities, the machining position of the next set of metal cavities can be quickly determined in the above manner for milling work. This method can effectively improve machining efficiency.

[0017] 2. The CNC gantry milling machine with auxiliary machining mechanism described in this invention expands outwards simultaneously through multiple arc-shaped moving blocks. Therefore, when not all arc-shaped moving blocks are in contact with the inner wall of the clamping slot, the metal cavity will be moved and positioned until all arc-shaped moving blocks are in contact with the inner wall of the clamping slot. The driving of the two positioning components can position the metal cavity above the auxiliary worktable, thereby omitting the edge finding step. At this time, the elastic arc strip is used to reduce the hard wear between the arc-shaped moving blocks and the inner wall of the clamping slot and to prevent the occurrence of large errors. After the metal cavity is positioned, the locking component inside the metal cavity is driven, that is, multiple telescopic components on the outside of the lifting block two extend and drive multiple locking arc blocks to move outwards until the overall diameter of the locking component is greater than the diameter of the clamping slot. Then, by the contraction of the lifting component three, the distance between the locking arc blocks and the arc-shaped moving blocks is reduced until the bottom side of the multiple locking arc blocks presses down on the bottom inner wall of the metal cavity to lock it, further positioning the metal cavity to improve the subsequent machining quality. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional view of the entire invention; Figure 2 This is a three-dimensional schematic diagram of the gantry multi-axis mechanism and machine platform in this invention; Figure 3 This is a three-dimensional schematic diagram of the auxiliary workbench in this invention; Figure 4 This is a three-dimensional schematic diagram of the coaxial moving mechanism in this invention; Figure 5 This is a three-dimensional schematic diagram of the collaborative mechanism in this invention; Figure 6 This is a three-dimensional schematic diagram of the locking mechanism in this invention; Figure 7 This is a three-dimensional schematic diagram of the positioning component and the locking component in this invention.

[0020] In the diagram: 1. Machine base; 11. Chip removal trough one; 2. Gantry multi-axis mechanism; 21. Lifting frame; 22. Displacement frame; 3. Processing component; 4. Auxiliary workbench; 5. Mounting base plate; 6. Cavity platform; 61. Sliding groove; 62. Coordinating mechanism; 621. Fixed platform; 622. Lifting component one; 623. Lifting platform; 7. Bearing platform; 71. Platform plate; 711. Chip removal trough two; 712. Chip removal trough three; 72. Sliding plate; 7 21. Dustproof elastic strip; 8. Locking mechanism; 81. Fixing block; 82. Mounting groove; 83. Positioning component; 831. Lifting block one; 832. Lifting component two; 833. Arc-shaped moving block; 834. Elastic arc-shaped strip; 84. Locking component; 841. Lifting block two; 842. Locking arc block; 843. Lifting component three; 9. Coaxial moving mechanism; 91. Displacement strip one; 92. Displacement strip two; 93. Drive gear. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1: As Figures 1-3 As shown, an embodiment of the present invention provides a CNC gantry milling machine with an auxiliary machining mechanism, including a machine base 1 and a gantry multi-axis mechanism 2 mounted on the machine base 1. A machining component 3 is movably mounted on the gantry multi-axis mechanism 2. The machining component 3 can change various cutting tools to machine a metal cavity. The machine base 1 is characterized by having an auxiliary worktable 4 detachably mounted on it. A metal frame is placed on the auxiliary worktable 4, and slots for clamping are symmetrically distributed inside the metal frame. The auxiliary worktable 4 includes a mounting base plate 5 that is detachably mounted on the machine base 1 and two cavity platforms 6 that are fixedly mounted on the mounting base plate 5. A support platform 7 is displaced and mounted above the cavity platform 6. A locking mechanism 8 is installed inside the support platform 7. The auxiliary worktable 4 also includes two coaxial moving mechanisms 9 installed on the symmetrical sides of the two cavity platforms 6. The two coaxial moving mechanisms 9 are used to simultaneously drive the movement of the two support platforms 7 above the two cavity platforms 6.

[0023] Specifically, an auxiliary worktable 4 is installed above the machine tool 1 by clamping or placing it. The metal cavity to be processed can be placed on the auxiliary worktable 4, and clamped using symmetrically distributed slots on the bottom of the metal cavity. After the metal cavity is raised by the auxiliary worktable 4, the edge-finding mechanism mounted on the processing assembly 3 confirms the position of the metal cavity. Subsequently, the multi-axis movable processing assembly 3, equipped with different cutting tools, can mill the top edge and outer side of the metal cavity. After one set of metal cavities is processed and cut, the next set of metal cavities must also undergo the above steps. Some non-cutting time is wasted on repeated positioning, severely restricting processing efficiency. Since the metal cavities to be processed are generally open facing upwards, and symmetrically distributed slots for clamping are opened on their bottom, and these slots are circular, in this device, the center distance between the two symmetrically opened circular slots of the metal cavity can be calculated first, and then the coaxial movement can be driven... The moving mechanism 9 enables the two support platforms 7 above the two cavity platforms 6 to move synchronously towards each other or synchronously away from each other, that is, to increase or decrease the distance between the two support platforms 7 until the distance between the two locking mechanisms 8 is consistent with the center distance between the two circular slots of the metal cavity. At this time, the metal cavity is placed on the two support platforms 7, and the two circular slots are distributed above the locking mechanisms 8, and the locking mechanisms 8 are located at the center of the circular slots. That is, the position to be processed of the metal cavity is confirmed by the locking mechanisms 8. This step eliminates the complicated step of edge finding. During the process of confirming the position of the metal cavity, the processing component 3 can be loaded with the tool to be processed. Then, the gantry multi-axis mechanism 2 can drive the processing component 3 to move to reach the pre-processing position, further shortening the processing time. After this group of metal cavities is processed and unloaded, the next group of metal cavities can quickly determine the processing position in the above way for milling work. This method can effectively improve the processing efficiency.

[0024] like Figures 2-5 As shown, the gantry multi-axis mechanism 2 includes a lifting frame 21 for driving the processing component 3 to rise and fall, and a displacement frame 22 for driving the displacement frame 22 to move horizontally. Multiple chip removal slots 11 are provided above the machine base 1, and the mounting base plate 5 is detachably installed above the machine base 1 through the multiple chip removal slots 11.

[0025] The support platform 7 includes a platform 71. A chip removal groove 3 712 and a plurality of chip removal grooves 2 711 are provided on the upper part of the platform 71. The width of the chip removal groove 3 712 is greater than the width of the chip removal grooves 2 711. The locking mechanism 8 is installed inside the chip removal groove 3 712. The two locking mechanisms 8 are symmetrically distributed above the two support platforms 7 with the center line of the mounting base plate 5 as the center.

[0026] Sliding plates 72 are fixedly installed on both sides of the platform 71. The sliding plates 72 are slidably installed on the side of the cavity platform 6 and are connected to the coaxial moving mechanism 9.

[0027] The coaxial moving mechanism 9 includes a second displacement bar 92 fixedly installed below one side of the sliding plate 72 and a first displacement bar 91 fixedly installed above one side of another set of sliding plates 72 on the same side. The first displacement bar 91 and the second displacement bar 92 are close to each other and have racks installed on their opposite end faces. The coaxial moving mechanism 9 has a drive gear 93 installed inside by electric drive. The drive gear 93 is located between the first displacement bar 91 and the second displacement bar 92, and the drive gear 93, the second displacement bar 92 and the first displacement bar 91 are meshed by gears.

[0028] The cavity platform 6 has sliding grooves 61 on both sides. The sliding plate 72 is slidably installed on the side of the sliding groove 61. Dustproof elastic strips 721 are also installed on both sides of the sliding plate 72. The dustproof elastic strips 721 cover the outside of the sliding groove 61, and one end of the dustproof elastic strips 721 is connected to the outside of the cavity platform 6.

[0029] A coordinating mechanism 62 is also installed above the mounting base plate 5. The coordinating mechanism 62 is located in the middle of the two cavity platforms 6. The coordinating mechanism 62 includes a fixed platform 621 and a lifting platform 623 located above the fixed platform 621. Multiple lifting components 622 are installed between the fixed platform 621 and the lifting platform 623. The lifting components 622 consist of a telescopic rod and a dustproof telescopic sleeve fitted on the outside.

[0030] Specifically, when it is necessary to adjust the distance between the two platforms 71, the drive gear 93 is rotated by electric drive, which in turn drives the meshing displacement bar 2 92 and displacement bar 1 91 to move. This pushes or pulls the two sliding plates 72 and the corresponding platforms 71 to move in opposite directions or away from each other simultaneously. The movement of displacement bar 1 91 and displacement bar 2 92 is small, so that the racks at their ends will not be outside the coaxial moving mechanism 9. At this time, the sliding plate 72 is slidably installed on the side of the cavity platform 6 through the insert strip, and the retractable dustproof elastic strip 721 provides dust protection when the sliding plate 72 moves. When the two bearing platforms 7 move to the appropriate position and the distance between the two platforms 71 is less than the width of the lifting platform 623, the extension of multiple lifting components 1 622 drives the lifting platform 6 to move. 23 rises and then rests against the lower side of the two platforms 71, preventing the bearing platform 7 located in the middle of the two cavity platforms 6 from being suspended, thus bearing more pressure. When the two bearing platforms 7 move to the appropriate position and the distance between the two platforms 71 is greater than the width of the lifting platform 623, the lifting platform 623 is raised by the extension of multiple lifting components 622, so that the top of the lifting platform 623 is at the same level as the top of the two platforms 71, providing support for the lower side of the metal cavity in the distance area between the two cavity platforms 6, thereby further stabilizing the metal cavity and improving the subsequent processing quality. The processed debris will enter the interior of the chip removal groove 711 and the chip removal groove 712. Because there is a gap between the bottom of the locking mechanism 8 and the bottom of the chip removal groove 712, the debris can be removed relatively easily.

[0031] Example 2: Figures 6-7 As shown in the first embodiment, another embodiment of the present invention is as follows: the locking mechanism 8 includes a fixing block 81 and a mounting groove 82 formed on the fixing block 81. The mounting groove 82 is equipped with a positioning member 83 and a locking member 84, which are installed in a lifting manner. The locking member 84 is positioned above the positioning member 83.

[0032] The positioning component 83 includes a lifting block 831 and a lifting component 832 fixedly installed below the lifting block 831. Multiple arc-shaped moving blocks 833 are movably installed on the outer side of the lifting block 831. An elastic arc-shaped strip 834 is installed on the outward side of the arc-shaped moving blocks 833. Multiple telescopic components are provided on the outer side of the lifting block 831. The lifting block 831 is connected to multiple corresponding arc-shaped moving blocks 833 through multiple telescopic components. The lifting component 832 and multiple telescopic components are composed of telescopic rods and dustproof telescopic sleeves fitted on the outer side.

[0033] The locking component 84 includes a second lifting block 841 and multiple locking arc blocks 842 movably installed on the outside of the second lifting block 841. A third lifting component 843 is installed on the lower side of the second lifting block 841. The lower end of the third lifting component 843 is connected to the first lifting block 831. The thickness of the multiple locking arc blocks 842 is greater than the thickness of the second lifting block 841. Multiple telescopic components are provided on the outside of the second lifting block 841. The second lifting block 841 is connected to multiple corresponding locking arc blocks 842 through multiple telescopic components. The third lifting component 843 and the multiple telescopic components are composed of telescopic rods and dustproof telescopic sleeves fitted on the outside.

[0034] Specifically, after the locking mechanism 8 is adjusted to the corresponding position along with the corresponding support platform 7, the metal cavity is placed on the auxiliary worktable 4 at this time. This allows both locking mechanisms 8 to be easily positioned within the clamping slot at the bottom of the metal cavity. At this point, the electric drive causes the lifting component 832 to lift the positioning component 83 and the locking component 84 until they are disengaged from the mounting slot 82. At this time, the bottom of the lifting block 831 and multiple arc-shaped moving blocks 833 are at the same horizontal level as the bottom of the metal cavity. The locking component 84 rises through the clamping slot and is inside the metal cavity. The electric drive causes multiple telescopic mechanisms on the outside of the lifting block 831 to extend, thereby moving multiple arc-shaped moving blocks 833 and elastic arc-shaped strips 834 outwards until they press against the inner wall of the clamping slot. Because multiple arc-shaped moving blocks 833 expand outwards simultaneously, when not all arc-shaped moving blocks 833 are in contact with the inner wall of the clamping slot, it will cause... The moving metal cavity is positioned until multiple arc-shaped moving blocks 833 are in contact with the inner wall of the clamping groove. The driving of the two positioning components 83 can position the metal cavity above the auxiliary worktable 4, thus eliminating the edge-finding step. At this time, the elastic arc strip 834 is used to reduce the hard wear between the arc-shaped moving blocks 833 and the inner wall of the clamping groove, and to prevent the occurrence of large errors. After the metal cavity is positioned, the locking component 84 inside the metal cavity is driven, that is, multiple telescopic components on the outside of the lifting block 2 841 extend and drive multiple locking arc blocks 842 to move outward until the overall diameter of the locking component 84 is larger than the diameter of the clamping groove. Then, by the contraction of the lifting component 3 843, the distance between the locking arc blocks 842 and the arc-shaped moving blocks 833 is reduced until the bottom side of multiple locking arc blocks 842 presses down on the bottom inner wall of the metal cavity to lock it, further positioning the metal cavity to improve the subsequent processing quality.

[0035] Working principle: An auxiliary worktable 4 is installed above the machine tool 1 by clamping or placing it. The metal cavity to be processed can be placed on the auxiliary worktable 4. The metal cavity is clamped using the symmetrically distributed slots on its bottom. After the metal cavity is raised by the auxiliary worktable 4, the edge-finding mechanism on the processing assembly 3 confirms the position of the metal cavity. Then, the multi-axis movable processing assembly 3 can be equipped with different tools to mill the top edge and the outer side of the metal cavity. After one set of metal cavities is processed and cut, the next set of metal cavities must also go through the above steps. Some non-cutting time is spent on repeated positioning, which seriously restricts the processing efficiency. This is because the metal cavities to be processed are generally open facing upwards and have symmetrical bottoms. The device features circular slots for clamping. Therefore, in this setup, the center-to-center distance between the two symmetrically positioned circular slots on the metal cavity is first calculated. Then, the coaxial moving mechanism 9 is driven to allow the two support platforms 7 above the two cavity platforms 6 to move synchronously towards or away from each other, i.e., to increase or decrease the distance between the two support platforms 7, until the distance between the two locking mechanisms 8 matches the center-to-center distance between the two circular slots on the metal cavity. At this point, the metal cavity is placed on the two support platforms 7, with the two circular slots positioned above the locking mechanisms 8, and the locking mechanisms 8 at the center of the slots. This process confirms the machining position of the metal cavity through the locking mechanisms 8, eliminating the complex edge-finding step. During this process of confirming the metal cavity position, the machining components... The required cutting tools can be loaded on the 3-axis machine. Then, the gantry multi-axis mechanism 2 can drive the machining component 3 to move to the pre-machining position, further shortening the machining time. After the machining and unloading of this set of metal cavities, the next set of metal cavities can quickly determine the machining position in the above manner for milling work. This method can effectively improve machining efficiency. When the locking mechanism 8 is adjusted to the corresponding position along with the corresponding support table 7, the metal cavity is placed on the auxiliary worktable 4 at this time. It is relatively easy to make both locking mechanisms 8 be in the slots at the bottom of the metal cavity for clamping. At this time, the electric drive causes the lifting component 2 832 to drive the positioning component 83 and the locking component 84 to rise until they are disengaged from the mounting slot 82. At this time, the lifting block 1 83 The bottoms of the lifting block 831 and multiple arc-shaped moving blocks 833 are at the same horizontal level as the bottom of the metal cavity. The locking component 84 rises through the clamping slot and is inside the metal cavity. The electric drive causes multiple telescopic mechanisms on the outside of the lifting block 831 to extend, thereby driving the multiple arc-shaped moving blocks 833 and the elastic arc-shaped strip 834 to move outward until they press against the inner wall of the clamping slot. Because the multiple arc-shaped moving blocks 833 expand outward simultaneously, when not all the arc-shaped moving blocks 833 are in contact with the inner wall of the clamping slot, the metal cavity will be moved and positioned until all the arc-shaped moving blocks 833 are in contact with the inner wall of the clamping slot. The driving of the two positioning components 83 can position the metal cavity above the auxiliary worktable 4, thus omitting the edge finding step.At this point, the elastic arc strip 834 is used to reduce hard wear between the arc-shaped moving block 833 and the inner wall of the clamping groove, and to prevent large errors. After the metal cavity is positioned, the locking member 84 inside the metal cavity is driven, that is, multiple telescopic members on the outside of the lifting block 2 841 extend and drive multiple locking arc blocks 842 to move outward until the overall diameter of the locking member 84 is larger than the diameter of the clamping groove. Then, by the contraction of the lifting member 3 843, the distance between the locking arc blocks 842 and the arc-shaped moving block 833 is reduced until the bottom sides of the multiple locking arc blocks 842 press down on the bottom inner wall of the metal cavity to lock it, further positioning the metal cavity to improve the quality of subsequent processing.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC gantry milling machine with an auxiliary machining mechanism, comprising a machine base (1) and a gantry multi-axis mechanism (2) mounted on the machine base (1), wherein a machining component (3) is movably mounted on the gantry multi-axis mechanism (2), and the machining component (3) can replace various cutting tools to machine a metal cavity, characterized in that: An auxiliary workbench (4) is detachably installed on the machine base (1). A metal frame is placed on the auxiliary workbench (4). The metal frame has symmetrically distributed slots for clamping inside. The auxiliary workbench (4) includes a mounting base plate (5) that is detachably installed on the machine base (1) and two cavity platforms (6) that are fixedly installed on the mounting base plate (5). A bearing platform (7) is displaced and installed above the cavity platform (6). A locking mechanism (8) is installed inside the bearing platform (7). The auxiliary workbench (4) also includes two coaxial moving mechanisms (9) installed on the symmetrical sides of the two cavity platforms (6). The two coaxial moving mechanisms (9) are used to simultaneously drive the movement of the two bearing platforms (7) above the two cavity platforms (6). The locking mechanism (8) includes a fixed block (81) and a mounting groove (82) opened on the fixed block (81). A positioning member (83) and a locking member (84) are installed inside the mounting groove (82) in a lifting manner. The locking member (84) is positioned above the positioning member (83). The positioning component (83) includes a lifting block one (831) and a lifting component two (832) fixedly installed below the lifting block one (831). Multiple arc-shaped moving blocks (833) are movably installed on the outer side of the lifting block one (831). An elastic arc strip (834) is installed on the outward side of the arc-shaped moving block (833). Multiple telescopic components are provided on the outer side of the lifting block one (831). The lifting block one (831) is connected to multiple corresponding arc-shaped moving blocks (833) through multiple telescopic components. The lifting component two (832) and multiple telescopic components are composed of telescopic rods and dustproof telescopic sleeves fitted on the outer side. The locking component (84) includes a second lifting block (841) and a plurality of locking arc blocks (842) movably installed on the outside of the second lifting block (841). A third lifting component (843) is installed on the lower side of the second lifting block (841). The lower end of the third lifting component (843) is connected to the first lifting block (831). The thickness of the plurality of locking arc blocks (842) is greater than the thickness of the second lifting block (841). A plurality of telescopic components are provided on the outside of the second lifting block (841). The second lifting block (841) is connected to a plurality of corresponding locking arc blocks (842) through the plurality of telescopic components. The third lifting component (843) and the plurality of telescopic components are composed of telescopic rods and dustproof telescopic sleeves fitted on the outside.

2. A CNC gantry milling machine with an auxiliary machining mechanism according to claim 1, characterized in that: The gantry multi-axis mechanism (2) includes a lifting frame (21) for driving the processing component (3) to rise and fall, and a displacement frame (22) for driving the displacement frame (22) to move horizontally. Multiple chip removal slots (11) are provided above the machine base (1). The mounting base plate (5) is detachably mounted above the machine base (1) through multiple chip removal slots (11).

3. A CNC gantry milling machine with an auxiliary machining mechanism according to claim 1, characterized in that: The support platform (7) includes a platform (71), and a chip removal groove three (712) and a plurality of chip removal groove two (711) are provided on the upper part of the platform (71). The width of the chip removal groove three (712) is greater than the width of the chip removal groove two (711). The locking mechanism (8) is installed inside the chip removal groove three (712). The two locking mechanisms (8) are symmetrically distributed above the two support platforms (7) with the center line of the mounting base plate (5) as the center.

4. A CNC gantry milling machine with an auxiliary machining mechanism according to claim 3, characterized in that: Sliding plates (72) are fixedly installed on both sides of the platform (71). The sliding plates (72) are slidably installed on the side of the cavity platform (6). The sliding plates (72) are connected to the coaxial moving mechanism (9).

5. A CNC gantry milling machine with an auxiliary machining mechanism according to claim 4, characterized in that: The coaxial moving mechanism (9) includes a second displacement bar (92) fixedly installed below one side of the sliding plate (72) and a first displacement bar (91) fixedly installed above one side of another set of the sliding plates (72) on the same side. The first displacement bar (91) and the second displacement bar (92) are close to each other and have racks installed on their opposite end faces. The coaxial moving mechanism (9) has a drive gear (93) installed inside by electric drive. The drive gear (93) is located between the first displacement bar (91) and the second displacement bar (92), and the drive gear (93), the second displacement bar (92) and the first displacement bar (91) are meshed by gears.

6. A CNC gantry milling machine with an auxiliary machining mechanism according to claim 4, characterized in that: The cavity platform (6) has sliding grooves (61) on both sides. The sliding plate (72) is slidably installed on the side of the sliding groove (61). Dustproof elastic strips (721) are also installed on both sides of the sliding plate (72). The dustproof elastic strips (721) cover the outside of the sliding groove (61), and one end of the dustproof elastic strips (721) is connected to the outside of the cavity platform (6).

7. A CNC gantry milling machine with an auxiliary machining mechanism according to claim 1, characterized in that: A coordinating mechanism (62) is also installed above the mounting base plate (5). The coordinating mechanism (62) is located in the middle of the two cavity platforms (6). The coordinating mechanism (62) includes a fixed platform (621) and a lifting platform (623) above the fixed platform (621). Multiple lifting components (622) are installed between the fixed platform (621) and the lifting platform (623). The lifting components (622) consist of a telescopic rod and a dustproof telescopic sleeve on the outside.

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