Multi-axis multi-tool turret milling compound machine

Abstract

This invention discloses a multi-axis, multi-turret milling machine, including a machining auxiliary spindle mechanism and a tool changing mechanism. The machining auxiliary spindle mechanism includes a machining seat mounted on a base, with an adjustable-height machining head on the machining seat, and the machining seat is slidably connected to the base. The tool changing mechanism is located on one side of the main spindle mechanism and includes multiple meshing wheels mounted on the base. A circulating chain is meshed on the multiple meshing wheels, and multiple tools are mounted on the side of the chain. A tool-holding component is provided on one side of the chain. The tool changing mechanism adopts a chain-belt circulating design, with multiple tools arranged on the side of the chain. Compared with traditional tool storage methods, this significantly expands the tool installation area, allowing for the storage of more tool sizes. It eliminates the need for frequent replenishment or replacement of tool storage components, adapting to diverse machining needs and reducing machining interruptions caused by insufficient tool sizes.

Description

Technical Field

[0001] This invention relates to the field of milling composite machine technology, and more particularly to a multi-axis, multi-turret milling composite machine. Background Technology

[0002] In high-end manufacturing fields such as aerospace, automotive manufacturing, precision molds, and medical devices, core components often have complex geometric structures, ultra-high dimensional accuracy, and multi-process integrated machining requirements. The machining quality of these parts directly determines the performance and reliability of the final product. As the manufacturing industry upgrades towards precision, efficiency, and complexity, milling composite machine tools, with their technological advantage of "one-time clamping and completion of all processes," significantly reduce the number of part clamping operations and auxiliary time, and avoid positioning errors caused by multiple clamping operations. They have become core equipment for machining complex precision parts. Among them, multi-axis, multi-turret milling composite machines, due to their ability to perform multi-process simultaneous machining, have become one of the mainstream choices for high-end machining scenarios.

[0003] The existing equipment uses a rotary tool storage structure for the tool changing mechanism, which occupies a large space and stores a small number of tools. This results in some tools not being able to be stored on the changing mechanism, requiring them to be retrieved from the storage area during the changing process, which takes time. In addition, the tool picking and transferring mechanism of most equipment has insufficient clamping stability for the tools, which can easily lead to problems such as tools falling off or shifting during the tool changing process. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art above, such as the small number of rotary tool storage structures and the insufficient clamping stability of tool picking and transferring mechanisms.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A multi-axis, multi-turret milling machine includes a machining auxiliary spindle mechanism and a tool changing mechanism. The machining auxiliary spindle mechanism includes a machining seat mounted on a base, and a height-adjustable machining head on the machining seat. The machining seat is slidably connected to the base. The tool changing mechanism is located on one side of the main spindle mechanism. The tool changing mechanism includes multiple meshing wheels mounted on the base, and a rotating chain belt meshes with the multiple meshing wheels. Multiple tools are mounted on the side of the chain belt. A tool-holding member is provided on one side of the chain belt, and a transfer member is provided on one side of the clamping member. The transfer member is used to transfer the machining head and the tools on the clamping member.

[0006] Preferably, a replacement motor for driving one of the meshing wheels to rotate is fixed on the base, the clamping member includes a support frame and a slide that slides on the support frame, a rotary clamping cylinder is slidably connected to the slide, a clamping part is fixed to the extended end of the rotary clamping cylinder, a temporary storage rack for temporarily storing the tool is provided on one side of the support frame, and a slot for inserting one end of the tool is provided on the temporary storage rack.

[0007] Preferably, a push cylinder is fixed on the support frame, the extended end of the push cylinder is fixedly connected to the slide, a replacement screw is rotatably connected to the slide, the rotary clamping cylinder is connected to the replacement screw, and a clamping motor for driving the replacement screw to rotate is fixed on the support frame.

[0008] Preferably, a stabilizing motor is fixed on the temporary storage rack, and a stabilizing plate is fixed to the output end of the stabilizing motor. One end of the stabilizing plate has a protrusion that abuts against the annular protrusion of the cutting tool.

[0009] Preferably, the transfer component includes a transfer cylinder and a transfer motor. The output end of the transfer cylinder is rotatably connected to a transfer rod, and one end of the transfer rod is fixedly connected to a transfer plate. Both ends of the transfer plate are also equipped with clamping parts with opposite openings.

[0010] Preferably, a worm gear is fixed on the transfer rod, and a worm engaging the worm gear is fixed to the output end of the transfer motor.

[0011] Preferably, the clamping part includes a clamping plate with an opening for the tool to enter, and an abutment that elastically moves to abut the tool on one side of the opening. A plurality of insert rods with annular protrusions for inserting the tool are provided inside the opening.

[0012] Preferably, the abutment slides on the transfer plate, the transfer plate is provided with a spring, the two ends of the spring are respectively connected to the abutment and the transfer plate, the abutment is provided with a groove, and the transfer plate is fixed with a limiting rod that inserts into the groove.

[0013] Preferably, the end of the abutment has an inlet ramp and an outlet ramp.

[0014] Preferably, a main spindle mechanism and a secondary spindle mechanism are fixed on the base. The main spindle mechanism includes a fixed clamping head; the secondary spindle mechanism includes a movable clamping head, which is at the same height as the fixed clamping head, and the distance between the secondary spindle mechanism and the main spindle mechanism is adjustable.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The tool changing mechanism adopts a chain circulation design, with multiple tools arranged on the side of the chain. Compared with the traditional tool storage method, it greatly expands the tool installation area and can store more tools of various sizes. It eliminates the need for frequent replenishment or replacement of tool storage components, adapts to diverse processing needs, and reduces processing interruptions caused by insufficient tool sizes.

[0016] The tool changing process is highly automated. By changing the motor-driven chain belt circulation, the required tools can be quickly selected. The clamping parts, temporary storage rack and transfer parts work together to realize the automatic clamping, temporary storage, transfer and handover of tools. There is no need for manual tool changing, which reduces the intensity of manual labor, avoids tool damage and installation deviation caused by manual operation, and shortens the tool changing time, ensuring the continuity of the machining process.

[0017] The combination of the temporary storage rack, stabilizing motor, and stabilizing plate enables precise positioning of the tool during temporary storage, preventing tool deviation, facilitating the separation of the clamping part and the gripping of the transfer parts, further improving the smoothness and accuracy of tool replacement, and avoiding installation errors caused by tool positioning deviation.

[0018] By adjusting the coordination between the motor and the lead screw, the distance between the sub-spindle mechanism and the main spindle mechanism can be flexibly adjusted. This can accommodate the clamping requirements at both ends of long workpieces, ensuring the stability of long workpieces during processing and avoiding shaking and processing deviations caused by excessive workpiece length. It can also accommodate the batch continuous processing requirements of short workpieces, allowing short workpieces to be fixed on both clamping heads simultaneously. After the auxiliary spindle mechanism completes the processing of the workpiece on the main spindle mechanism, it can move laterally to the sub-spindle mechanism to carry out processing, realizing continuous processing of workpieces, significantly shortening the processing cycle and improving processing efficiency.

[0019] The machining auxiliary shaft mechanism adopts a two-way adjustment design, which can move laterally and longitudinally. At the same time, the machining head can be flexibly rotated to adjust the angle. Without disassembling the workpiece or adjusting the overall position of the equipment, the machining station can be quickly switched and the machining depth and angle can be adjusted. It is compatible with various machining processes such as turning, milling, drilling, and grinding, reducing the time spent on process switching. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the machining auxiliary shaft mechanism of the present invention.

[0023] Figure 3 This is a schematic diagram of the auxiliary lead screw of the present invention.

[0024] Figure 4 This is a schematic diagram of the auxiliary lead screw of the present invention.

[0025] Figure 5This is a schematic diagram of the meshing wheel and chain belt of the present invention.

[0026] Figure 6 This is a schematic diagram of the clamping and transferring components of the present invention.

[0027] Figure 7 This is a schematic diagram of the replacement lead screw and clamping motor of the present invention.

[0028] Figure 8 This is a schematic diagram of inserting a cutting tool into the temporary storage rack of the present invention.

[0029] Figure 9 This is a schematic diagram of the slot for the temporary storage rack according to the present invention.

[0030] Figure 10 This is a schematic diagram of the worm gear and worm of the present invention.

[0031] Figure 11 This is a schematic diagram of the opening, abutment, and insertion rod of the present invention.

[0032] Figure 12 This is a schematic diagram of the inlet and outlet inclined planes of the present invention.

[0033] Drawing number explanation: 1. Main spindle mechanism; 11. Fixed clamping head; 2. Sub-spindle mechanism; 21. Movable clamping head; 22. Adjusting motor; 23. Adjusting lead screw; 3. Machining auxiliary shaft mechanism; 31. Machining seat; 32. Machining head; 33. Auxiliary motor one; 34. Auxiliary lead screw one; 35. Auxiliary motor two; 36. Auxiliary lead screw two; 37. Machining frame; 38. Auxiliary motor three; 39. Auxiliary lead screw three; 4. Tool changing mechanism; 41. Meshing wheel; 42. Chain belt; 43. Changing motor; 44. Clamping component; 441. Support frame; 442. Slide; 443. Rotary clamping air... 444. Cylinder; 445. Temporary storage rack; 446. Slot; 447. Push cylinder; 448. Replacement screw; 449. Clamping motor; 45. Transfer component; 451. Transfer cylinder; 452. Transfer motor; 453. Transfer rod; 454. Transfer plate; 455. Worm gear; 456. Worm; 46. Clamping part; 461. Clamping plate; 462. Opening; 463. Abutment joint; 464. Insert rod; 465. Spring; 466. Slide groove; 467. Limiting rod; 478. Inlet ramp; 479. Outlet ramp; 47. Stabilizing motor; 48. Stabilizing plate; 49. Protrusion; 5. Base. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings.

[0035] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0036] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0037] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0038] Please see Figures 1-12 A multi-axis, multi-turret milling machine includes a main spindle mechanism 1, a sub-spindle mechanism 2, a machining auxiliary spindle mechanism 3, and a tool changing mechanism 4, all fixed on a base 5. The main spindle mechanism 1 includes a fixed clamping head 11; the sub-spindle mechanism 2 includes a movable clamping head 21, which is at the same height as the fixed clamping head 11. The distance between the sub-spindle mechanism 2 and the main spindle mechanism 1 is adjustable. The main spindle mechanism 1, the sub-spindle mechanism 2, and the clamping heads thereon are existing technologies. An adjusting motor 22 is fixed on the base 5. An adjusting screw 23 is fixed to the output end of the adjusting motor 22. The adjusting screw 23 is connected to the sub-spindle mechanism 2, which is a prior art connection. The distance between the sub-spindle mechanism 2 and the main spindle mechanism 1 can be adjusted by adjusting the motor 22 and the adjusting screw 23, which can accommodate workpieces of different lengths. Of course, for short workpieces, they can be fixed on the main spindle mechanism 1 and the sub-spindle mechanism 2 respectively. After the auxiliary spindle mechanism 3 finishes processing the workpiece on the main spindle mechanism 1, it can move to directly process the workpiece on the sub-spindle mechanism 2, thereby improving efficiency.

[0039] The machining auxiliary shaft mechanism 3 includes a machining seat 31 mounted on a base 5, with an adjustable-height machining head 32 on the machining seat 31. The machining seat 31 is slidably connected to the base 5. Specifically, an auxiliary motor 33 is fixed on the base 5, and an auxiliary lead screw 34 is rotatably connected to the base 5. The output end of the auxiliary motor 33 is fixedly connected to the auxiliary lead screw 34. The machining seat 31 is connected to the auxiliary lead screw 34 (existing technology). A machining frame 37 is slidably connected to the machining seat 31. An auxiliary motor 35 is fixed on the machining frame 37, and an auxiliary lead screw 36 is rotatably connected to the machining frame 37. The output end of the auxiliary motor 35 is fixedly connected to the auxiliary lead screw 36. The machining head 32 is longitudinally slidably connected to the machining frame 37 via a machining plate (existing technology). The machining head 32 can be rotated on the machining plate (existing technology) to adjust its angle. The machining head 32 can be rotated to a horizontal position for tool replacement. The machining plate is connected to the auxiliary lead screw 36 (existing technology). The auxiliary motor 35 and the auxiliary lead screw 36 work together to longitudinally adjust the position of the machining head 32. An auxiliary motor 38 is fixed on the machining base 31, and an auxiliary lead screw 39 is rotatably connected to the machining base 31. The machining frame 37 is connected to the auxiliary lead screw 39. This connection is existing technology. The auxiliary motor 38 and the auxiliary lead screw 39 work together to adjust the front and rear positions of the machining frame 37.

[0040] The tool changing mechanism 4 is located on one side of the spindle mechanism 1. The tool changing mechanism 4 includes multiple meshing wheels 41 mounted on the base 5. The meshing wheels 41 are rotatably connected to the base 5. A rotating chain 42 is meshed on the multiple meshing wheels 41. The chain 42 is connected end to end. About half of the tools are installed in the chain 42. Multiple tools are installed on the side of the chain 42. The side arrangement increases the area for tool installation, thereby increasing the number of tools that can be stored. A tool holding member 44 is provided on one side of the chain 42. The holding member 44 is located above the chain 42. A transfer member 45 is provided on one side of the holding member 44. The transfer member 45 is used to transfer the tools on the machining head 32 and the holding member 44. The holding member 44 and the transfer member 45 cooperate to change the tools on the machining head 32.

[0041] All cutting tools have annular protrusions, with a mounting section on one side and a machining section on the other side. The mounting section is used to connect the machining head 32. Limiting grooves are formed in the circumferential direction of the annular protrusions.

[0042] A replacement motor 43 for driving one of the meshing wheels 41 to rotate is fixed on the base 5. The replacement motor 43 is fixed on the base 5. The clamping member 44 includes a support frame 441 and a slide 442 that slides on the support frame 441. The support frame 441 is fixedly connected to the base 5. A rotary clamping cylinder 443 is slidably connected to the slide 442. The rotary clamping cylinder 443 is prior art. A clamping part 46 is fixed to the extended end of the rotary clamping cylinder 443. The clamping part 46 is used to clamp the tool. A temporary storage rack 444 for temporarily storing the tool is provided on one side of the support frame 441. A slot 445 for inserting one end of the tool is provided on the temporary storage rack 444 so that the annular protrusion contacts the temporary storage rack 444.

[0043] A push cylinder 446 is fixed on the support frame 441. The extended end of the push cylinder 446 is fixedly connected to the slide 442. A replacement screw 447 is rotatably connected to the slide 442. A rotary clamping cylinder 443 is connected to the replacement screw 447. A clamping motor 448 that drives the replacement screw 447 to rotate is fixed on the support frame 441. The clamping motor 448 is connected to the replacement screw 447 through a pulley assembly.

[0044] To increase the stability of the transfer unit 45 in holding the tool, a stabilizing motor 47 is fixed on the temporary storage rack 444. A stabilizing plate 48 is fixed to the output end of the stabilizing motor 47. One end of the stabilizing plate 48 has a protrusion 49 that abuts against the annular protrusion of the tool. The protrusion 49 cooperates with the temporary storage rack 444 to position the tool on the temporary storage rack 444, which facilitates the separation and gripping of the clamping part 46.

[0045] The transfer component 45 includes a transfer cylinder 451 and a transfer motor 452. The output end of the transfer cylinder 451 is rotatably connected to a transfer rod 453, and the output end is axially fixed to the transfer rod 453. One end of the transfer rod 453 is fixedly connected to a transfer plate 454. Both ends of the transfer plate 454 are also equipped with clamping parts 46 with openings 462 in opposite directions. The two clamping parts 46 are used to clamp the cutting tools on the processing head 32 and the temporary storage rack 444, respectively.

[0046] A worm gear 455 is fixed on the transfer rod 453, and a worm 456 that meshes with the worm gear 455 is fixed at the output end of the transfer motor 452. The worm gear 455 and the worm 456 are located inside the protective shell, and the protective shell is fixed on the support frame 441.

[0047] The clamping part 46 includes a clamping plate 461, which has an opening 462 for the tool to enter. One side of the opening 462 has an abutment 463 that elastically moves to abut against the tool. The abutment 463 elastically abuts against an annular protrusion to prevent the tool from disengaging from the opening 462. A plurality of insert rods 464 are provided in the opening 462 to insert into the annular protrusion of the tool. The insert rods 464 are inserted into the limiting groove of the annular protrusion, thereby limiting the axial movement of the tool.

[0048] The abutment 463 slides on the transfer plate 454. A spring 465 is installed inside the transfer plate 454. The two ends of the spring 465 are connected to the abutment 463 and the transfer plate 454 respectively. A groove 466 is provided on the abutment 463. A limiting rod 467 is fixed on the transfer plate 454 and inserted into the groove 466. The end of the abutment 463 has an inlet ramp 468 and an outlet ramp 469, which allow the tool to move in and out.

[0049] like Figure 8 and 11 As shown, it should be noted that the clamping plate 461 at the rotary clamping cylinder 443 and the clamping plate 461 on the transfer plate 454 have different structures. Specifically, the clamping plate 461 at the rotary clamping cylinder 443 is an integral structure with the spring 465 and the abutment 463, while the clamping plate 461 on the transfer plate 454 is a separate structure with the spring 465 and the abutment 463.

[0050] Before the equipment is put into operation, the distance between the main spindle mechanism 1 and the secondary spindle mechanism 2 is adjusted according to the length of the workpiece: the adjusting motor 22 is started, and its output end drives the adjusting screw 23 to rotate. Since the adjusting screw 23 is connected to the secondary spindle mechanism 2, the rotation of the screw drives the secondary spindle mechanism 2 to slide along the base 5, thereby adjusting the distance between the movable clamping head 21 and the fixed clamping head 11 until it is adapted to the length of the workpiece being processed. After the adjustment is completed, the adjusting motor 22 stops, and the position of the secondary spindle mechanism 2 is fixed.

[0051] When clamping a workpiece, for long workpieces, both ends can be fixed to the fixed clamping head 11 of the main spindle mechanism 1 and the movable clamping head 21 of the sub-spindle mechanism 2 respectively to achieve stable clamping; for short workpieces, two short workpieces can be fixed to the fixed clamping head 11 and the movable clamping head 21 respectively to prepare for subsequent efficient continuous machining. The specific clamping action of the clamping head adopts existing technology to ensure that the workpiece is firmly clamped without shaking. The auxiliary shaft mechanism 3 is responsible for completing the turning, milling, drilling, and grinding functions of the workpiece. Its working process is divided into two parts: position adjustment and machining action. When the auxiliary motor 1 33 starts, it drives the auxiliary lead screw 1 34 on the base 5 to rotate. The machining seat 31 connected to the auxiliary lead screw 1 34 slides along the base 5, realizing the lateral movement of the machining head 32 until it moves to the corresponding position of the workpiece to be processed, meeting the needs of different machining stations. When the auxiliary motor 2 35 starts, it drives the auxiliary lead screw 2 36 to rotate. The machining plate connected to the auxiliary lead screw 2 36 slides longitudinally along the machining frame 37, thereby driving the machining head 32 to move up and down, adjusting the height between the machining head 32 and the workpiece to adapt to different machining depth requirements. The auxiliary motor 3 38 and the auxiliary lead screw 3 39 work together to adjust the front and rear positions of the machining frame 37. The machining head 32 can rotate on the machining plate and be adjusted to a suitable machining angle according to the machining process requirements. After the angle is adjusted, it is fixed, and then the machining head 32 is started to process the workpiece. After the workpiece on the main spindle mechanism 1 is processed, the machining auxiliary spindle mechanism 3 drives the machining seat 31 to move laterally through the auxiliary motor 33, and moves directly to the workpiece on the sub-main spindle mechanism 2. There is no need to readjust the overall position, and subsequent processing can be carried out, which greatly improves the processing efficiency.

[0052] When it is necessary to change the tool, the machining head 32 can be rotated to a horizontal position and moved in the direction of the tool changing mechanism 4; When the replacement motor 43 is started, it drives one of the meshing wheels 41 to rotate. The meshing wheel 41 drives the chain belt 42 connected end to end to rotate in a cycle. Multiple tools mounted on the side of the chain belt 42 move with the chain belt 42. When the required tool moves to the clamping position, the replacement motor 43 is turned off, the chain belt 42 stops rotating, and the tool selection is completed. The chain belt 42 adopts the method of arranging tools on the side, which expands the tool installation area and can store more tools of more specifications to adapt to diverse processing needs.

[0053] Then, the clamping motor 448 starts, driving the changing screw 447 to rotate via the pulley, which in turn drives the rotary clamping cylinder 443 to move along the slide 442 until the clamping part 46 is directly above the tool. The rotary clamping cylinder 443 starts, and its extended clamping part 46 descends to clamp the annular protrusion of the tool. Then, the rotary clamping cylinder 443 continues to move along the slide 442, separating the tool from the chain 42. The rotary clamping cylinder 443 then moves the tool upward and adjusts its direction. The clamping motor 448 and the changing screw 447 then drive the tool to move to the temporary storage rack 444. Then, the push cylinder 446 starts, pushing the slide 442 to slide along the support frame 441. The slide 442 moves the rotary clamping cylinder 443 and the tool until the tool mounting part is inserted into the slot 445 on the temporary storage rack 444, so that the annular protrusion of the tool contacts the temporary storage rack 444, completing the temporary storage of the tool.

[0054] To ensure the stability of the tool during temporary storage and facilitate the separation of the clamping part 46 and subsequent gripping by the transfer component 45, the stabilizing motor 47 on the temporary storage rack 444 is activated, driving the stabilizing plate 48 to rotate. This causes the protrusion 49 on the stabilizing plate 48 to abut against the annular protrusion of the tool, cooperating with the temporary storage rack 444 to achieve precise positioning of the tool and prevent tool deviation. After abutment, the rotary clamping cylinder 443 continues to move the clamping part 46 upward, thereby separating it from the tool. The rotary clamping cylinder 443 then moves away, providing space for the transfer component 45 to work.

[0055] When the transfer plate 454 is in a vertical position, and the tool on the machining head 32 moves to be parallel to the tool on the temporary storage rack 444, the transfer motor 452 drives the worm gear 456 to rotate. The worm gear 456 causes the worm wheel 455 to rotate, which in turn drives the transfer rod 453 to rotate. This causes the clamping parts 46 at both ends of the transfer plate 454 to align with the tools on the temporary storage rack 444 and the machining head 32, respectively, so that the two clamping parts 46 clamp the tool on the temporary storage rack 444 and the old tool on the machining head 32, respectively. After clamping is completed, the stabilizing plate 48 is reset, and then the transfer cylinder 451 is activated, causing the transfer rod 453 to move, thereby disengaging the two tools. The temporary storage rack 444 and the processing head 32, the transfer motor 452 continue to rotate, causing the transfer rod 453 to continue rotating, exchanging the positions of the two clamping parts 46. Then the transfer cylinder 451 resets, the old tool is inserted into the temporary storage rack 444, and the new tool is installed on the processing head 32, completing the handover of the new tool and the old tool. The transfer motor 452 rotates in the opposite direction, and the transfer plate 454 is restored to its original position through the transfer rod 453. During this process, the clamping part 46 separates from the tool. Finally, the processing head 32 rotates away and the processing angle is adjusted, and subsequent processing can be carried out. The old tool can be put back into the chain belt 42 for storage through the clamping part 44.

[0056] When the clamping part 46 clamps the tool (including the clamping part 46 at the rotary clamping cylinder 443 and the transfer plate 454), the tool enters the opening 462 and contacts the inlet inclined surface 468, causing the abutment 463 to move. The spring 465 is compressed, and the sliding groove 466 on the abutment 463 cooperates with the limiting rod 467 on the transfer plate 454 to ensure that the abutment 463 does not deviate when it moves elastically. The annular protrusion of the tool fully enters the opening 462. At this time, the outlet inclined surface 469 contacts the annular protrusion, and the insert rod 464 in the opening 462 is inserted into the limiting groove of the annular protrusion of the tool, realizing the axial limitation of the tool and preventing the tool from moving axially during processing or transfer. When the tool separates from the opening 462, the annular protrusion squeezes the abutment 463 through the outlet inclined surface 469, causing the abutment 463 to move, and the insert rod 464 separates from the limiting groove.

[0057] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A multi-axis, multi-turret milling machine, characterized in that, include: The machining auxiliary shaft mechanism (3) includes a machining seat (31) set on a base (5), the machining seat (31) having a machining head (32) with adjustable height, and the machining seat (31) being slidably connected to the base (5); The tool changing mechanism (4) is located on one side of the spindle mechanism (1). The tool changing mechanism (4) includes multiple meshing wheels (41) mounted on the base (5). A rotating chain belt (42) is meshed on the multiple meshing wheels (41). Multiple tools are mounted on the side of the chain belt (42). A tool holding member (44) is provided on one side of the chain belt (42). A transfer member (45) is provided on one side of the clamping member (44). The transfer member (45) is used to transfer the tools on the machining head (32) and the clamping member (44).

2. The multi-axis, multi-turret milling machine according to claim 1, characterized in that: The base (5) is fixed with a replacement motor (43) that drives one of the meshing wheels (41) to rotate. The clamping member (44) includes a support frame (441) and a slide (442) that slides on the support frame (441). A rotary clamping cylinder (443) is slidably connected to the slide (442). A clamping part (46) is fixed to the extended end of the rotary clamping cylinder (443). A temporary storage rack (444) for temporarily storing tools is provided on one side of the support frame (441). A slot (445) for inserting one end of the tool is provided on the temporary storage rack (444).

3. A multi-axis, multi-turret milling machine according to claim 2, characterized in that: A push cylinder (446) is fixed on the support frame (441). The extended end of the push cylinder (446) is fixedly connected to the slide (442). A replacement screw (447) is rotatably connected to the slide (442). The rotary clamping cylinder (443) is connected to the replacement screw (447). A clamping motor (448) for driving the replacement screw (447) to rotate is fixed on the support frame (441).

4. A multi-axis, multi-turret milling machine according to claim 3, characterized in that: A stabilizing motor (47) is fixed on the temporary storage rack (444), and a stabilizing plate (48) is fixed at the output end of the stabilizing motor (47). One end of the stabilizing plate (48) has a protrusion (49) that abuts against the annular protrusion of the cutting tool.

5. A multi-axis, multi-turret milling machine according to claim 4, characterized in that: The transfer component (45) includes a transfer cylinder (451) and a transfer motor (452). The output end of the transfer cylinder (451) is rotatably connected to a transfer rod (453). One end of the transfer rod (453) is fixedly connected to a transfer plate (454). Both ends of the transfer plate (454) are also equipped with clamping parts (46) with openings (462) in opposite directions.

6. A multi-axis, multi-turret milling machine according to claim 5, characterized in that: A worm gear (455) is fixed on the transfer rod (453), and a worm (456) meshing with the worm gear (455) is fixed at the output end of the transfer motor (452).

7. A multi-axis, multi-turret milling machine according to claim 6, characterized in that: The clamping part (46) includes a clamping plate (461), which has an opening (462) for the entry of a tool. One side of the opening (462) has an abutment (463) for elastically moving and abutting the tool. Multiple insert rods (464) for inserting the tool are provided inside the opening (462).

8. A multi-axis, multi-turret milling machine according to claim 7, characterized in that: The abutment (463) slides on the transfer plate (454). A spring (465) is provided inside the transfer plate (454). The two ends of the spring (465) are connected to the abutment (463) and the transfer plate (454) respectively. A groove (466) is provided on the abutment (463). A limiting rod (467) that is inserted into the groove (466) is fixed on the transfer plate (454).

9. A multi-axis, multi-turret milling machine according to claim 8, characterized in that: The end of the abutment (463) has an inlet ramp (468) and an outlet ramp (469).

10. A multi-axis, multi-turret milling machine according to claim 1, characterized in that: The base (5) is fixed with a main spindle mechanism (1) and a secondary spindle mechanism (2). The main spindle mechanism (1) includes a fixed clamping head (11). The secondary spindle mechanism (2) includes a movable clamping head (21). The movable clamping head (21) is at the same height as the fixed clamping head (11). The distance between the secondary spindle mechanism (2) and the main spindle mechanism (1) is adjustable.

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