An auxiliary positioning clamp for a vertical-horizontal conversion five-axis horizontal machining center

Abstract

The present application relates to the technical field of auxiliary fixture of machining center, and particularly relates to a vertical-horizontal conversion five-axis horizontal machining center auxiliary positioning fixture, which comprises a machining center body, a moving table, an adjusting piece, a quick-release piece and a clamping piece, the moving table is movably assembled on the rack of the machining center body, and the adjusting piece is assembled on the top surface of the moving table, the adjusting piece is used for switching the machining angle of the clamped workpiece, the quick-release piece is vertically assembled on the top of the adjusting piece, and the quick-release piece is used for quickly assembling the clamping piece of a corresponding size, the clamping piece is detachably assembled on the top of the quick-release piece, and the clamping piece is used for clamping the workpiece to be machined, the present application realizes the rapid positioning, accurate clamping, multi-angle adjustment and quick replacement of the fixture, and perfectly adapts to the requirement of one-time clamping multi-surface machining of the vertical-horizontal conversion five-axis horizontal machining center.

Description

Technical Field

[0001] This invention relates to the field of auxiliary fixtures for machining centers, and in particular to an auxiliary positioning fixture for a five-axis horizontal machining center that can be converted from vertical to horizontal. Background Technology

[0002] The vertical-to-horizontal conversion five-axis horizontal machining center is a high-end composite machining tool that combines the advantages of large capacity and multi-face machining of horizontal machining centers with the top surface machining convenience of vertical machining centers. Its core technical feature is that the spindle head can automatically switch between horizontal and vertical postures, enabling the completion of complex multi-face machining of workpieces in one clamping, effectively reducing the number of clamping times, avoiding positioning errors caused by multiple clamping, and greatly improving machining efficiency and machining accuracy.

[0003] In the machining process of a five-axis horizontal machining center that can be converted from vertical to horizontal, the auxiliary positioning fixture is a core component that ensures machining accuracy and operational stability. It accurately positions the workpiece during the conversion between vertical and horizontal orientations, ensuring that the workpiece reference remains unchanged after the orientation change; it reliably clamps the workpiece to prevent displacement and vibration during machining, thus avoiding affecting the surface quality of the machined workpiece; and it ensures the repeatability of the workpiece's positioning accuracy after multiple clamping operations, meeting the needs of batch precision machining.

[0004] However, the traditional auxiliary positioning fixtures currently used in vertical-to-horizontal conversion five-axis horizontal machining centers require operators to re-align and calibrate the workpiece when changing workpieces or switching machining processes. The entire calibration process is time-consuming and cannot meet the high-efficiency continuous machining requirements of vertical-to-horizontal conversion five-axis horizontal machining centers. At the same time, when clamping thin-walled or irregularly shaped parts, the uneven distribution of clamping force in traditional mechanical locking fixtures can easily lead to workpiece deformation, thus affecting machining accuracy. In addition, during the vertical-to-horizontal conversion process, the direction of machining force changes significantly. The structural design of traditional fixtures has limitations and cannot meet the rigid support requirements in multiple directions at the same time, which can easily cause workpiece displacement during machining, further reducing machining accuracy. Summary of the Invention

[0005] This invention solves the problems in related technologies and proposes an auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: an auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center, comprising a machining center body, a moving table, an adjusting component, a quick-release component, and a clamping component. The moving table is movably assembled on the frame of the machining center body, and an adjusting component is assembled on the top surface of the moving table. The adjusting component is used to switch the machining angle of the workpiece being clamped, and a quick-release component is vertically assembled on the top of the adjusting component. The quick-release component is used to quickly assemble a fixture of the corresponding size. A clamping component is detachably assembled on the top of the quick-release component, and the clamping component is used to clamp the workpiece to be processed.

[0007] As a preferred embodiment, a circumferential switching column is vertically rotatably connected to the center of the top surface of the mobile stage, and a circumferential switching gear is horizontally fixed at the top of the circumferential switching column. A circumferential switching motor is vertically fixed on one side of the top surface of the mobile stage, and a switching main gear is horizontally fixed at the top output end of the circumferential switching motor. The switching main gear meshes with the circumferential switching gear to drive the circumferential switching column to rotate circumferentially on the top surface of the mobile stage.

[0008] As a preferred embodiment, the adjusting component includes a first rotating frame, a second rotating frame, and a guide post housing. The second rotating frame is disposed above the first rotating frame, and the first rotating frame and the second rotating frame are arranged in a cross shape along the vertical direction. The bottom end of the first rotating frame is fixed on the top surface of the circumferential switching gear, and the guide post housing is vertically disposed above the second rotating frame.

[0009] As a preferred embodiment, a first rotating frame is horizontally fixed on the bottom surface of the second rotating frame, and the first rotating frame is rotatably connected in the first rotating frame. A first motor is horizontally fixed on one side of the inside of the first rotating frame, and a first adjusting gear is fixed at the output end of the first motor. A first driven gear is horizontally fixed in the middle of the first rotating frame, and the first driven gear meshes with the first adjusting gear.

[0010] As a preferred embodiment, a second rotating frame is horizontally fixed on the bottom surface of the guide post housing, and the second rotating frame is rotatably connected in the second rotating frame. A second motor is horizontally fixed on one side of the inner side of the second rotating frame, and a second adjusting gear is fixed at the output end of the second motor. A second driven gear is horizontally fixed in the middle of the second rotating frame, and the second driven gear meshes with the second adjusting gear.

[0011] As a preferred embodiment, the quick-release component includes an assembly tube, on the inner wall of which multiple grooves are evenly and vertically formed, and an assembly rotating post is vertically and rotatably connected through the center of the top surface of the assembly tube. An assembly gear is horizontally fixed at the top of the assembly rotating post, and two clamping plates are symmetrically and horizontally fixed at the bottom of the assembly rotating post.

[0012] As a preferred embodiment, multiple protruding strips are uniformly and vertically fixed on the outer circumference of the guide post housing. The multiple protruding strips on the outer wall of the guide post housing are fitted into and limited by multiple grooves on the inner wall of the assembly tube. Two pull plates are symmetrically and horizontally fixed at the top of the guide post housing. Two clamping plates at the bottom of the assembly rotating column are inserted into the guide post housing. The two clamping plates at the bottom of the assembly rotating column are fitted into and limited by the two pull plates at the top of the guide post housing. An assembly motor is vertically fixed on one side of the outer wall of the assembly tube. A drive gear is horizontally fixed at the top of the assembly motor. The drive gear meshes with the assembly gear.

[0013] As a preferred embodiment, a bracket is vertically fixed on the upper part of the outer wall of the assembly tube, and two assembly slides are symmetrically and vertically fixed on both sides of the top surface of the bracket. A perforated plate is fixed between the two assembly slides on one side of the assembly tube, and a double-headed electric cylinder is horizontally fixed on the top surface of the assembly tube. An insert is horizontally slidably inserted into the assembly slide, and the insert is fixedly assembled with the output end of the double-headed electric cylinder.

[0014] As a preferred embodiment, the clamping component includes a clamping cylinder, which is vertically positioned above the assembly insert. A sliding hole frame is vertically fixed on the bottom surface of the clamping cylinder, and the sliding hole frame and the assembly slide are vertically slidably inserted together. The sliding hole frame and the insert are mutually limited and inserted together.

[0015] As a preferred embodiment, multiple sliding boxes are evenly and vertically fixed on the inner wall of the clamp, and a pressure box is horizontally slidably assembled inside the multiple sliding boxes. An air bladder is fixed inside the sliding box, and the outer wall of the air bladder is fixed on the pressure box. A pressure column for pressing the workpiece is fixed on the outer wall of the pressure box. The bottom end of the air bladder passes through the bottom surface of the clamp and is connected to and fixed with a branch pipe, and a solenoid valve is connected and assembled on the branch pipe. An air ring is horizontally fixed on the bottom surface of the clamp, and the air ring is connected and assembled with the bottom end of the branch pipe and with an external air supply pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center aims to solve the technical pain points of traditional auxiliary positioning fixtures, such as long calibration time when changing workpieces and processes, easy deformation when clamping thin-walled or irregularly shaped parts, and difficulty in providing multi-directional rigid support during vertical-to-horizontal conversion. Through the coordinated operation of five core components—machining center body, moving table, adjusting parts, quick-release parts, and clamping parts—it achieves rapid workpiece positioning, precise clamping, multi-angle adjustment, and rapid fixture replacement. It is suitable for the needs of vertical-to-horizontal conversion five-axis horizontal machining centers to perform multi-face machining in one clamping, ensuring machining accuracy and operating efficiency.

[0017] The core collaborative logic of this fixture is as follows: the machining center body provides the installation foundation and movement support for the entire fixture; the moving table provides the foundation for circumferential angle adjustment and overall position adjustment through a circumferential switching motor and gear transmission; the adjustment components, through the cross-shaped first rotating frame, second rotating frame and dual motor drive structure, realize multi-dimensional angle adjustment of the workpiece, accurately adapting to the vertical and horizontal conversion requirements of the spindle head; the quick-release components, through the limiting cooperation of convex strips and grooves, the clamping plate and pull plate, and the double-headed electric cylinder driven insertion structure, realize the quick disassembly and assembly of the clamping components, avoiding the cumbersome calibration process during the replacement of traditional fixtures; the clamping components, through the elastic clamping structure of the airbag driven pressure column, achieve uniform clamping of the workpiece and avoid workpiece deformation.

[0018] Through the coordinated operation of its components, this system effectively addresses three major technical pain points of traditional auxiliary positioning fixtures: quick-release components enable rapid replacement of clamping parts without the need for recalibration, significantly improving operational efficiency; the air-cushion clamping structure ensures uniform distribution of clamping force, effectively preventing deformation of thin-walled and irregularly shaped parts and guaranteeing clamping accuracy; and the multi-directional rigid support structure of the adjustment components adapts to changes in machining force direction during vertical-to-horizontal conversion, preventing workpiece displacement and further ensuring machining accuracy. Overall, it achieves rapid workpiece positioning, precise clamping, multi-angle adjustment, and rapid fixture replacement, perfectly meeting the needs of vertical-to-horizontal conversion five-axis horizontal machining centers for multi-face machining in a single setup. This significantly improves machining efficiency and product qualification rate, satisfying the precision machining needs of high-end manufacturing industries such as aerospace, automotive manufacturing, and mold processing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center; Figure 2 This is an exploded view of the auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center; Figure 3 This is a schematic diagram showing the positions of the moving table, adjusting component, quick-release component, and clamping component in the disassembled state in an embodiment of the auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center. Figure 4 This is a schematic diagram of the moving table in the disassembled state in an embodiment of the auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center; Figure 5 This is a schematic diagram of the structure of the adjusting table in the disassembled state in an embodiment of the auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center; Figure 6 This is a schematic diagram of the quick-release component in the disassembled state in an embodiment of the auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center; Figure 7 This is a schematic diagram of the support structure in the disassembled state in an embodiment of the auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center; Figure 8 This is a schematic diagram of the clamping component in the disassembled state in an embodiment of the auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center.

[0020] In the diagram: 1. Machining center body; 2. Moving table; 21. Circumferential switching column; 22. Circumferential switching gear; 23. Circumferential switching motor; 24. Switching main gear; 3. Adjusting component; 31. First rotating frame; 32. First motor; 321. First adjusting gear; 33. First rotating frame; 331. First driven gear; 34. Second rotating frame; 35. Second motor; 351. Second adjusting gear; 36. Second rotating frame; 361. Second driven gear; 37. Guide column housing 371. Cylinder; 4. Pull plate; 4. Quick release parts; 41. Assemble insert cylinder; 42. Assemble rotating column; 43. Assemble gear; 44. Clamping plate; 45. Bracket; 46. Assemble slide; 461. Orifice plate; 47. Double-headed electric cylinder; 48. Insert bracket; 49. Assemble motor; 491. Drive gear; 5. Clamping parts; 51. Clamping cylinder; 52. Sliding hole frame; 53. Sliding box; 54. Pressure box; 541. Pressure column; 55. Airbag; 56. Air ring; 57. Branch pipe; 571. Solenoid valve. Detailed Implementation

[0021] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0022] like Figures 1 to 3As shown, an auxiliary positioning fixture for a five-axis horizontal machining center that can be converted from vertical to horizontal includes a machining center body 1, a moving table 2, an adjusting member 3, a quick-release member 4, and a clamping member 5. The moving table 2 is movably assembled on the frame of the machining center body 1, and the adjusting member 3 is assembled on the top surface of the moving table 2. The adjusting member 3 is used to switch the machining angle of the workpiece. The quick-release member 4 is vertically assembled on the top of the adjusting member 3, and is used to quickly assemble a fixture of the corresponding size. The clamping member 5 is detachably assembled on the top of the quick-release member 4, and is used to clamp the workpiece to be processed. By setting the moving table 2, it can move freely on the frame of the machining center body 1, allowing the fixture to quickly adjust its position according to machining requirements. The adjusting member 3 is switchable, and its state can be changed according to different machining angle requirements, ensuring that the workpiece can obtain stable positioning under different machining needs. The quick-release member 4 is located on the top of the adjusting member 3, and the quick-release member 4 adopts a structure design that allows for quick disconnection and connection, facilitating the user to quickly replace clamping members 5 of different sizes. When it is necessary to change to workpieces of different sizes for processing, the quick-release component 4 can be quickly separated from the existing clamping component 5. Users can then quickly select a clamping component 5 suitable for the new workpiece size, saving significant time and operational steps. During this process, the clamping component 5 can firmly fix and hold the workpiece to be processed according to the state of the quick-release component 4, ensuring the workpiece remains stable during processing. The fixture can achieve rapid positioning and clamping of workpieces of different sizes. In this process, the cooperation of the moving table 2 and the adjusting component 3 ensures precise positioning of the workpiece at various angles, while the combination of the quick-release component 4 and the clamping component 5 allows for quick replacement. This design enables this five-axis horizontal machining center to efficiently process workpieces of different sizes and angles, greatly improving production efficiency and processing flexibility.

[0023] In one embodiment, such as Figure 2 and 3As shown, a circumferential switching column 21 is vertically rotatably connected to the center of the top surface of the moving platform 2, and a circumferential switching gear 22 is horizontally fixed to the top of the circumferential switching column 21. A circumferential switching motor 23 is vertically fixed to one side of the top surface of the moving platform 2, and a switching main gear 24 is horizontally fixed to the top output end of the circumferential switching motor 23. The switching main gear 24 meshes with the circumferential switching gear 22 to drive the circumferential switching column 21 to rotate circumferentially on the top surface of the moving platform 2. By setting the circumferential switching column 21 and the circumferential switching gear 22 on it, the circumferential switching column 21 can rotate circumferentially on a plane. This utilizes the principle of gear meshing, that is, the switching main gear 24 meshes with the circumferential switching gear 22. Specifically, when the circumferential switching motor 23 starts and drives the switching main gear 24 to rotate, due to the meshing of the two gears, the rotational motion of the switching main gear 24 is transmitted to the circumferential switching gear 22, thereby causing the circumferential switching column 21 to rotate circumferentially on the top surface of the moving platform 2. The circumferential switching motor 23 transmits power to the circumferential switching column 21 by meshing with the switching main gear 24 and the circumferential switching gear 22, so that it can achieve smooth circumferential motion on the top surface of the moving table 2.

[0024] In one embodiment, such as Figure 4As shown, the adjusting component 3 includes a first rotating frame 31, a second rotating frame 34, and a guide post housing 37. The second rotating frame 34 is positioned above the first rotating frame 31, and the first rotating frame 31 and the second rotating frame 34 are arranged in a cross shape along the vertical direction. The bottom end of the first rotating frame 31 is fixed to the top surface of the circumferential switching gear 22. The guide post housing 37 is vertically positioned above the second rotating frame 34. A first rotating bracket 33 is horizontally fixed to the bottom surface of the second rotating frame 34, and the first rotating bracket 33 is rotatably connected to the first rotating frame 31. A first motor 32 is horizontally fixed to one side of the interior of the first rotating frame 31, and a first adjusting gear 321 is fixed to the output end of the first motor 32. A first driven gear 331 is horizontally fixed to the middle of the first rotating bracket 33. The first driven gear 331 meshes with the first adjusting gear 321. A second rotating frame 36 is horizontally fixed on the bottom surface of the guide post housing 37, and the second rotating frame 36 is rotatably connected in the second rotating frame 34. A second motor 35 is horizontally fixed on one side of the interior of the second rotating frame 34, and a second adjusting gear 351 is fixed at the output end of the second motor 35. A second driven gear 361 is horizontally fixed in the middle of the second rotating frame 36, and the second driven gear 361 meshes with the second adjusting gear 351. By setting the cross-shaped structure of the first rotating frame 31 and the second rotating frame 34, as well as the first motor 32 and the second motor 35, the first rotating frame 31 and the second rotating frame 34 can rotate relative to each other, thereby achieving precise positioning and adjustment of the adjusting component 3. The first motor 32 drives the first adjusting gear 321 to mesh with the first driven gear 331, so that the first rotating frame 33 can rotate around its own axis, thereby driving the guide post housing 37 connected to it to perform circular motion inside the first rotating frame 31. Similarly, the second motor 35 drives the second adjusting gear 351 to mesh with the second driven gear 361, causing the second rotating frame 36 to rotate around its axis, thereby driving the guide post housing 37 to be further precisely adjusted inside the second rotating frame 34. The height of the guide post housing 37 is precisely controlled by adjusting the first rotating frame 33 and the second rotating frame 36 at different vertical positions.

[0025] In one embodiment, such as Figure 5 and 6As shown, the quick-release component 4 includes an assembly insert 41. Multiple grooves are evenly and vertically formed on the inner wall of the assembly insert 41. An assembly rotating post 42 is vertically and rotatably connected through the center of the top surface of the assembly insert 41. An assembly gear 43 is horizontally fixed at the top of the assembly rotating post 42, and two clamping plates 44 are symmetrically and horizontally fixed at the bottom of the assembly rotating post 42. Multiple protrusions are evenly and vertically fixed on the outer circumference of the guide post housing 37. These protrusions on the outer wall of the guide post housing 37 are fitted into the grooves on the inner wall of the assembly insert 41, and two pull plates 371 are symmetrically and horizontally fixed at the top of the guide post housing 37. Two clamping plates 44 at the bottom of the mounting column 42 are inserted into the guide column housing 37, and the two clamping plates 44 at the bottom of the mounting column 42 are locked in place with the two pull plates 371 at the top of the guide column housing 37. An assembly motor 49 is vertically fixed to one side of the outer wall of the assembly tube 41, and a drive gear 491 is horizontally fixed to the top of the assembly motor 49. The drive gear 491 meshes with the assembly gear 43. Through the insertion and engagement of the assembly tube 41 and the guide column housing 37, and the locking and engagement of the clamping plates 44 and the pull plates 371, the assembly tube 41 can rotate freely inside the guide column housing 37, achieving the effect of quick disassembly and rapid installation. Specifically, because the inner wall of the assembly tube 41 has uniform grooves, and multiple protrusions are fixed on the outer circumference of the guide column housing 37, the multiple protrusions and multiple grooves are locked in place, allowing the assembly tube 41 to rotate circumferentially inside the guide column housing 37, thus facilitating installation and disassembly. Furthermore, the assembly rotating post 42 is located at the center of the top surface of the assembly insert 41, with an assembly gear 43 fixed at its top and two locking plates 44 symmetrically fixed at its bottom. This structural design allows the assembly rotating post 42 to be locked and unlocked at the required positions. At the same time, two pull plates 371 are fixed at the top of the guide post housing 37, which, together with the locking plates 44, form a constraint, ensuring a stable connection between the assembly insert 41 and the guide post housing 37.

[0026] In one embodiment, such as Figure 8As shown, a bracket 45 is vertically fixed above the outer wall of the assembly tube 41, and two assembly slides 46 are symmetrically and vertically fixed on both sides of the top surface of the bracket 45. A perforated plate 461 is fixed between the two assembly slides 46 on one side of the assembly tube 41, and a double-headed electric cylinder 47 is horizontally fixed on the top surface of the assembly tube 41. A bracket 48 is horizontally slidably inserted into the assembly slide 46, and the bracket 48 is fixedly assembled with the output end of the double-headed electric cylinder 47. The clamping component 5 includes a clamp 51, which is vertically positioned above the assembly tube 41. A sliding hole bracket 52 is vertically fixed on the bottom surface of the clamp 51, and the sliding hole bracket 52 is vertically slidably inserted into the assembly slide 46. The sliding hole bracket 52 and the bracket 48 are mutually limited and inserted through. Multiple sliding boxes 53 are evenly and vertically fixed on the inner wall of the clamp 51, and the multiple sliding boxes 53 are connected to each other. A horizontal sliding assembly is provided with a pressure box 54. An air bladder 55 is fixed inside the sliding box 53, and the outer wall of the air bladder 55 is fixed to the pressure box 54. A pressure column 541 for pressing the workpiece is fixed on the outer wall of the pressure box 54. The bottom end of the air bladder 55 passes through the bottom surface of the clamping cylinder 51 and is connected to a branch pipe 57. A solenoid valve 571 is connected to the branch pipe 57. An air ring 56 is horizontally fixed on the bottom surface of the clamping cylinder 51. The air ring 56 is connected to the bottom end of the branch pipe 57 and is connected to the external air supply pipe. The assembly slide 46 is fixed to the bracket 45 in a symmetrical form on both sides, and a horizontal sliding insert 48 is inserted. The insert 48 is fixed to the output end of the double-headed electric cylinder 47, so that the insert 48 can effectively slide horizontally in the assembly slide 46. Therefore, the double-headed electric cylinder 47 driving the insert bracket 48 can achieve precise adjustment of both sides of the assembled insert 41, thus achieving precise positioning. In other words, the insert bracket 48, in cooperation with the double-headed electric cylinder 47, achieves precise positioning of the workpiece. Through the technical features of the clamping cylinder 51, the sliding hole bracket 52, and the insert bracket 48, the sliding hole bracket 52, due to its vertical sliding insertion with the assembled slide 46 and the insert bracket 48, allows the clamping cylinder 51 to slide precisely in various combinations of the assembled slide 46 and the insert bracket 48. The sliding cylinder, through the clamping component 5, achieves the function of clamping the workpiece, adapting to different workpiece shapes and sizes, improving the flexibility and applicability of clamping, thus enhancing clamping flexibility. That is, the sliding cylinder and the clamping component 5 achieve multi-mode clamping, enhancing the clamping effect and improving the versatility and applicability of the equipment. By incorporating the technical features of the sliding box 53, the pressure box 54, and the airbag 55, the pressure box 54 in the sliding box 53 can have its air pressure regulated by the airbag 55. This allows the pressure column 541 of the pressure box 54 to apply different clamping forces to the incoming workpiece, ensuring the safe clamping of different workpieces. When the solenoid valve 571 controls the airbag 55 to deflate, the pressure box 54 can release its clamping force on the workpiece due to the connection between the airbag 55 and the bottom end of the branch pipe 57 at the bottom of the pressure box 54, allowing the workpiece to be easily removed.Therefore, this technical feature facilitates the replacement and handling of workpieces of different shapes and sizes. Specifically, by controlling the inflation and deflation of the airbag 55, safe and reliable clamping and release of different workpieces are achieved, improving operational safety and convenience. The technical feature of connecting the air ring 56 to an external air supply pipe allows for quick and convenient provision of uniform air pressure support, avoiding the uneven air pressure problems that may occur with a single air supply, ensuring that the clamping force of the pressure box 54 on the workpiece is uniform and reliable. Therefore, this technical feature provides excellent air pressure supply, thereby ensuring the stability and reliability of the workpiece during clamping. In other words, the connection between the air ring 56 and the external air supply pipe achieves a stable air pressure supply, enhancing the reliability of the clamping process and improving the stability and service life of the equipment.

[0027] The working principle of this invention is as follows: During the equipment assembly and initial debugging phase, the movable stage 2 is movably assembled onto the frame of the machining center body 1 to ensure that the movable stage 2 can move smoothly along the frame and adapt to the vertical-to-horizontal conversion operation position requirements of the machining center spindle head. The circumferential switching column 21 is vertically rotatably connected to the center of the top surface of the movable stage 2, the circumferential switching gear 22 is horizontally fixed to the top of the circumferential switching column 21, and the circumferential switching motor 23 is vertically fixed to one side of the top surface of the movable stage 2, so that the switching main gear 24 fixed at the top output end of the circumferential switching motor 23 meshes precisely with the circumferential switching gear 22. The circumferential switching motor 23 is debugged to ensure that it can drive the circumferential switching column 21 to drive the circumferential switching gear 22 to rotate smoothly in a circular motion, providing a power basis for adjusting the workpiece circumferential angle.

[0028] As the core component for switching workpiece processing angles, the adjusting component 3 has its first rotating frame 31 fixed at its bottom end to the top surface of the circumferential switching gear 22, ensuring that the first rotating frame 31 can rotate synchronously with the circumferential switching gear 22. The first rotating bracket 33, which is horizontally fixed on the bottom surface of the second rotating frame 34, is rotatably connected inside the first rotating frame 31. The first motor 32 is horizontally fixed to one side inside the first rotating frame 31, so that the first adjusting gear 321 fixed at the output end of the first motor 32 precisely meshes with the first driven gear 331 horizontally fixed in the middle of the first rotating bracket 33. The first motor 32 is adjusted to ensure that it can drive the second rotating frame 34 around the axis of the first rotating bracket 33. The line rotates stably; the second rotating frame 36, which is horizontally fixed on the bottom surface of the guide column shell 37, is rotatably connected inside the second rotating frame 34. The second motor 35 is horizontally fixed on one side inside the second rotating frame 34, so that the second adjusting gear 351 fixed at the output end of the second motor 35 meshes with the second driven gear 361 horizontally fixed in the middle of the second rotating frame 36. The second motor 35 is adjusted to ensure that it can drive the guide column shell 37 to rotate flexibly around the axis of the second rotating frame 36. Since the first rotating frame 31 and the second rotating frame 34 are arranged in a cross shape along the vertical direction, the multi-dimensional processing angle of the workpiece can be adjusted and controlled to adapt to the changing processing direction requirements during the vertical-horizontal conversion.

[0029] The quick-release component 4 is used to quickly assemble and disassemble the clamping component 5. Multiple grooves are evenly and vertically formed on the inner wall of its assembly cylinder 41. The assembly rotating column 42 is vertically and rotatably connected to the center of the top surface of the assembly cylinder 41. The assembly gear 43 is horizontally fixed to the top of the assembly rotating column 42. Two clamping plates 44 are symmetrically and horizontally fixed to the bottom of the assembly rotating column 42. Multiple protrusions evenly and vertically fixed on the outer circumference of the guide column shell 37 are fitted into the grooves on the inner wall of the assembly cylinder 41 to achieve circumferential positioning of the assembly cylinder 41 and the guide column shell 37, preventing relative rotation. Two pull plates 371 symmetrically and horizontally fixed at the top of the guide column shell 37 are fitted into the two clamping plates 44 inserted into the bottom of the assembly rotating column 42, achieving detachable fixing of the quick-release component 4 and the adjusting component 3. The assembly motor 49 is vertically fixed. On one side of the outer wall of the assembly tube 41, the drive gear 491, which is horizontally fixed at the top of the assembly motor 49, meshes with the assembly gear 43. The assembly motor 49 is adjusted to ensure that it can drive the assembly rotating column 42 to rotate the clamping plate 44, thereby realizing the quick disassembly and assembly of the quick-release part 4 and the adjusting part 3. The bracket 45 is vertically fixed above the outer wall of the assembly tube 41. Two assembly slides 46 are symmetrically and vertically fixed on both sides of the top surface of the bracket 45. The perforated plate 461 is fixed between the two assembly slides 46 on one side of the assembly tube 41. The double-headed electric cylinder 47 is horizontally fixed on the top surface of the assembly tube 41. The insert 48 is horizontally slidably inserted into the assembly slide 46 and fixedly assembled with the output end of the double-headed electric cylinder 47. The double-headed electric cylinder 47 is adjusted to ensure that it can drive the insert 48 to slide smoothly and horizontally along the assembly slide 46, thus ensuring the quick fixation of the clamping part 5.

[0030] The clamping component 5 is used to reliably clamp the workpiece to be processed. The sliding hole frame 52, which is vertically fixed on the bottom surface of the clamping cylinder 51, is vertically slidably inserted into the assembly slide frame 46 of the quick-release component 4. At the same time, the sliding hole frame 52 and the insertion frame 48 are limited through insertion, realizing the detachable assembly of the clamping component 5 and the quick-release component 4, which is convenient for subsequent replacement to adapt to workpieces of different sizes. Multiple sliding boxes 53 are evenly and vertically fixed on the inner wall of the clamping cylinder 51. The pressure box 54 is horizontally slidably assembled inside the sliding box 53. The airbag 55 is fixed inside the sliding box 53 and its outer wall is fixed to the pressure box 54. The connection is as follows: the pressure column 541 is fixed on the outer wall of the pressure box 54 for precise pressure on the workpiece to be processed; the branch pipe 57 is connected and fixed to the bottom end of the air bag 55 and passes through the bottom surface of the clamping cylinder 51; the solenoid valve 571 is assembled on the branch pipe 57; the air ring 56 is horizontally fixed on the bottom surface of the clamping cylinder 51 and connected to the bottom end of the branch pipe 57; at the same time, the air ring 56 is connected to the external air supply pipeline; the solenoid valve 571 and the air supply system are adjusted to ensure that the air bag 55 can be stably inflated and deflated, driving the pressure column 541 to extend and retract smoothly, ensuring the reliability and uniformity of clamping.

[0031] According to the size and specifications of the workpiece to be processed, select the appropriate clamping part 5, align the sliding hole frame 52 of the clamping part 5 with the assembly slide 46 of the quick release part 4 and insert it vertically, ensuring that the sliding hole frame 52 and the assembly slide 46 are precisely matched and without looseness; start the double-headed electric cylinder 47 to drive the insert 48 to slide horizontally along the assembly slide 46, so that the insert 48 passes through the sliding hole frame 52, realizing the quick fixation of the clamping part 5 and the quick release part 4 without additional calibration; if it is necessary to replace the clamping part 5 with a different specification, start the double-headed electric cylinder 47 in reverse to drive the insert 48 to be pulled out from the sliding hole frame 52, so that the clamping part 5 can be quickly removed from the quick release part 4. The entire process does not require the operator to re-align and calibrate, which greatly shortens the fixture change time and is suitable for the high-efficiency continuous machining operation requirements of vertical-to-horizontal conversion five-axis horizontal machining centers, solving the pain point of long time-consuming fixture changes in traditional fixtures.

[0032] Place the workpiece to be processed smoothly into the clamping cylinder 51, ensuring that the workpiece is centered in the clamping cylinder 51; start the external air supply system, and deliver gas at a preset pressure to each branch pipe 57 through the air ring 56; open the solenoid valve 571, and the gas smoothly enters the air bladder 55 inside the slide box 53, causing the air bladder 55 to slowly expand and push the pressure box 54 to slide horizontally along the slide box 53, driving the pressure column 541 to move towards the workpiece until multiple pressure columns 541 evenly press against the workpiece surface, achieving reliable clamping of the workpiece; this clamping method, through the elastic buffering effect of the air bladder 55, makes the clamping force evenly distributed on the workpiece surface, effectively avoiding the workpiece deformation problem that occurs when clamping thin-walled or irregularly shaped parts by traditional mechanical locking fixtures, ensuring the dimensional accuracy of the workpiece after clamping, and solving the pain point of deformation in traditional fixtures; after clamping, close the solenoid valve 571 to maintain the inflation state of the air bladder 55, ensuring that the workpiece is firmly clamped during processing and avoiding displacement and vibration.

[0033] Based on the posture of the spindle head of the vertical-to-horizontal conversion five-axis horizontal machining center and the requirements of the workpiece machining surface, the workpiece machining angle is precisely adjusted through the coordinated action of the adjusting component 3 and the moving table 2. This ensures that the workpiece machining surface is precisely aligned with the machining direction of the spindle head, guaranteeing machining accuracy. The specific adjustment action is as follows: the circumferential switching motor 23 on the moving table 2 is started, driving the switching main gear 24 to rotate at a constant speed, which in turn drives the circumferential switching gear 22 meshing with it to rotate synchronously. The circumferential switching gear 22 drives the first rotating frame 31 and the adjusting component 3, quick release component 4, and clamping component 5 above it to rotate circumferentially around the axis of the circumferential switching rotating column 21 until the workpiece rotates to the preset circumferential angle, adapting to the machining requirements of different orientations and achieving the adaptability of multi-directional workpiece machining.

[0034] The first motor 32 is started, driving the first adjusting gear 321 to rotate, which in turn drives the first driven gear 331 and the first rotating frame 33 to rotate synchronously. The first rotating frame 33 drives the second rotating frame 34 and the upper components to rotate around the axis of the first rotating frame 33, thereby achieving angle adjustment of the workpiece in the first direction. The second motor 35 is started, driving the second adjusting gear 351 to rotate, which in turn drives the second driven gear 361 and the second rotating frame 36 to rotate synchronously. The second rotating frame 36 drives the guide post housing 37 and the quick-release parts 4 and clamping parts 5 above it to rotate around the axis of the second rotating frame 36, thereby achieving angle adjustment of the workpiece in the second direction. Since the first rotating frame 31 and the second rotating frame 34 are arranged in a cross shape along the vertical direction, the angle adjustments in the two directions are independent of each other and do not interfere with each other, which can realize precise control of the multi-dimensional processing angle of the workpiece and adapt to the changing processing direction requirements during the vertical-horizontal conversion.

[0035] The frame of the machining center body 1 drives the moving table 2 to move smoothly, which in turn drives the upper adjustment component 3, quick release component 4, clamping component 5 and the workpiece to move synchronously, so that the workpiece is accurately moved to the preset machining position, ensuring that the spindle head can accurately process the workpiece and achieve flexible adaptation of the machining position.

[0036] When the spindle head of the five-axis horizontal machining center switches between horizontal and vertical postures, the machining angle of the workpiece is simultaneously adjusted by the first motor 32 and the second motor 35 of the adjusting component 3, so that the machining surface of the workpiece is always perpendicular to the machining direction of the spindle head, ensuring that the machining accuracy is not affected by the posture change. During the machining process, the air bladder 55 of the clamping component 5 is continuously inflated, driving the pressure column 541 to stably press against the workpiece, preventing the workpiece from shifting or shaking due to machining vibration and force, and ensuring the quality of the machined surface. At the same time, the first rotating frame 31, the second rotating frame 34 and the guide column shell 37 of the adjusting component 3 form a multi-directional rigid support structure, which can effectively cope with the change in the direction of machining force during the vertical-horizontal conversion, meet the requirements of multi-directional rigid support, avoid workpiece displacement during the machining process, further ensure machining accuracy, and solve the pain point that traditional fixtures cannot meet the requirements of multi-directional rigid support.

[0037] If it is necessary to switch processing steps or change workpieces during processing, close the solenoid valve 571 to slowly discharge the gas in the airbag 55. The pressure column 541 will reset under its own weight and the limiting action of the slide box 53, and the processed workpiece can be easily taken out. After replacing the new workpiece, repeat the steps to clamp it. There is no need to readjust the fixture or calibrate it with a dial indicator, which greatly shortens the process switching time and adapts to the operation requirements of efficient continuous processing of machine tools.

[0038] The above are preferred embodiments of the present invention. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. An auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center, characterized in that, The machining center includes a machining center body (1), a moving table (2), an adjusting component (3), a quick-release component (4), and a clamping component (5). The moving table (2) is movably assembled on the frame of the machining center body (1), and the adjusting component (3) is assembled on the top surface of the moving table (2). The adjusting component (3) is used to switch the machining angle of the workpiece. The quick-release component (4) is vertically assembled on the top of the adjusting component (3), and the quick-release component (4) is used to quickly assemble a fixture of the corresponding size. The clamping component (5) is detachably assembled on the top of the quick-release component (4), and the clamping component (5) is used to clamp the workpiece to be processed.

2. The auxiliary positioning fixture for a five-axis horizontal machining center that can be converted from vertical to horizontal as described in claim 1, characterized in that: The top surface of the mobile platform (2) is vertically rotatably connected to a circumferential switching column (21), and a circumferential switching gear (22) is horizontally fixed at the top of the circumferential switching column (21). A circumferential switching motor (23) is vertically fixed on one side of the top surface of the mobile platform (2), and a switching main gear (24) is horizontally fixed at the top output end of the circumferential switching motor (23). The switching main gear (24) meshes with the circumferential switching gear (22) to drive the circumferential switching column (21) to rotate circumferentially on the top surface of the mobile platform (2).

3. The auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center according to claim 2, characterized in that: The adjusting component (3) includes a first rotating frame (31), a second rotating frame (34), and a guide post shell (37). The second rotating frame (34) is arranged above the first rotating frame (31), and the first rotating frame (31) and the second rotating frame (34) are arranged in a cross shape along the vertical direction. The bottom end of the first rotating frame (31) is fixed on the top surface of the circumferential switching gear (22), and the guide post shell (37) is arranged vertically above the second rotating frame (34).

4. The auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center according to claim 3, characterized in that: The bottom surface of the second rotating frame (34) is horizontally fixed with a first rotating frame (33), and the first rotating frame (33) is rotatably connected in the first rotating frame (31). The first motor (32) is horizontally fixed on one side inside the first rotating frame (31), and the output end of the first motor (32) is fixed with a first adjusting gear (321). The middle part of the first rotating frame (33) is horizontally fixed with a first driven gear (331), and the first driven gear (331) meshes with the first adjusting gear (321).

5. The auxiliary positioning fixture for a five-axis horizontal machining center that can be converted from vertical to horizontal as described in claim 3, characterized in that: A second rotating frame (36) is horizontally fixed on the bottom surface of the guide post shell (37), and the second rotating frame (36) is rotatably connected in the second rotating frame (34). A second motor (35) is horizontally fixed on one side inside the second rotating frame (34), and a second adjusting gear (351) is fixed at the output end of the second motor (35). A second driven gear (361) is horizontally fixed in the middle of the second rotating frame (36), and the second driven gear (361) meshes with the second adjusting gear (351).

6. The auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center according to claim 3, characterized in that: The quick-release component (4) includes an assembly tube (41). Multiple grooves are evenly and vertically provided on the inner wall of the assembly tube (41). An assembly rotating column (42) is vertically and rotatably connected through the center of the top surface of the assembly tube (41). An assembly gear (43) is horizontally fixed at the top of the assembly rotating column (42). Two clamping plates (44) are symmetrically and horizontally fixed at the bottom of the assembly rotating column (42).

7. The auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center according to claim 6, characterized in that: Multiple protruding strips are evenly and vertically fixed on the outer circumference of the guide post shell (37), and the multiple protruding strips on the outer wall of the guide post shell (37) are fitted into the multiple grooves on the inner wall of the assembly tube (41) in a limited and inserted manner. Two pull plates (371) are symmetrically and horizontally fixed at the top of the guide post shell (37). Two clamping plates (44) at the bottom of the assembly rotating column (42) are inserted into the interior of the guide post shell (37), and the two clamping plates (44) at the bottom of the assembly rotating column (42) are fitted into the two pull plates (371) at the top of the guide post shell (37). An assembly motor (49) is vertically fixed on one side of the outer wall of the assembly tube (41), and a drive gear (491) is horizontally fixed at the top of the assembly motor (49), and the drive gear (491) meshes with the assembly gear (43).

8. The auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center according to claim 6, characterized in that: A bracket (45) is vertically fixed above the outer wall of the assembled tube (41), and two assembly slides (46) are symmetrically and vertically fixed on both sides of the top surface of the bracket (45). A perforated plate (461) is fixed between the two assembly slides (46) on one side of the assembled tube (41), and a double-headed electric cylinder (47) is horizontally fixed on the top surface of the assembled tube (41). A plug (48) is horizontally slidably inserted in the assembly slide (46), and the plug (48) is fixedly assembled with the output end of the double-headed electric cylinder (47).

9. An auxiliary positioning fixture for a five-axis horizontal machining center that can be converted from vertical to horizontal as described in any one of claims 1-8, characterized in that: The clamping member (5) includes a clamping cylinder (51), which is vertically arranged above the assembly insert (41). A sliding hole frame (52) is vertically fixed on the bottom surface of the clamping cylinder (51), and the sliding hole frame (52) is vertically slidably inserted into the assembly slide (46). The sliding hole frame (52) is limited and inserted through the insert (48).

10. The auxiliary positioning fixture for a vertical-to-horizontal conversion five-axis horizontal machining center according to claim 9, characterized in that: Multiple sliding boxes (53) are uniformly and vertically fixed on the inner wall of the clamp (51), and a pressure box (54) is horizontally slidably assembled inside the multiple sliding boxes (53). An air bag (55) is fixed inside the sliding box (53), and the outer wall of the air bag (55) is fixed on the pressure box (54). A pressure column (541) for pressing the workpiece is fixed on the outer wall of the pressure box (54). The bottom end of the air bag (55) passes through the bottom surface of the clamp (51) and is connected to a branch pipe (57). A solenoid valve (571) is connected to the branch pipe (57). An air ring (56) is horizontally fixed on the bottom surface of the clamp (51), and the air ring (56) is connected to the bottom end of the branch pipe (57) and is connected to the external air supply pipe.

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