A numerical control machine tool for processing automobile aluminum alloy parts

Abstract

The application relates to the technical field, in particular to a numerical control machine tool for automobile aluminum alloy part machining, which comprises a machine tool body, one end of a workbench of the machine tool body is provided with a main shaft box, the other end of the workbench is provided with a sliding tool holder, further comprises a rotating disc, the rotating disc is coaxially fixedly connected with an output shaft of the main shaft box, at least three loading grooves are equidistantly arranged on an outer ring wall of the rotating disc, the loading grooves are in U shapes, a flared groove is further arranged on the front surface of the rotating disc and located at the loading groove, a rotation seat in an arc shape is rotatably arranged in the flared groove. Through cooperation of the loading mechanism and the rotating disc, the workpiece can automatically fall into the loading groove, the clamping mechanism on the rotating disc can automatically clamp and fix the workpiece, the rotary driving mechanism can control the clamping ring and the workpiece to rotate around the center shaft, therefore, the application can reduce the degree of manual intervention in the loading link, not only helps to reduce the labor intensity of workers, but also effectively improves the machining efficiency.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool for machining automobile aluminum alloy parts. BACKGROUND

[0002] With the rapid development of the automobile manufacturing industry, lightweight design has become the core direction for improving the energy efficiency and handling performance of vehicles, and aluminum alloy is widely used in the manufacture of key automobile parts such as engine blocks, gearbox housings and suspension system components due to its high strength, low density and excellent corrosion resistance. Among them, cylindrical aluminum alloy workpieces, as the basic components of the transmission system and the steering system, directly affect the assembly quality of the whole vehicle and the output of the production line.

[0003] At present, the turning machining of the cylindrical surface, end face and stepped structure of the cylindrical aluminum alloy workpiece mainly relies on traditional numerical control machine tools. Under the existing machining mode, the operator needs to manually align the one end of the cylindrical aluminum alloy workpiece to be machined with the center hole of the spindle chuck, and then drive the clamping jaw to tighten to realize the fixation of the workpiece by rotating the chuck wrench. Then, the spindle box drives the chuck and the workpiece to rotate at high speed, and the control system drives the sliding tool holder to move along the guide rail according to the preset program, so that the tool and the workpiece are in contact and the turning machining is completed. After the machining is completed, the spindle stops rotating, the operator manually loosens the clamping jaw again, takes down the machined workpiece and places it on the rack, and then repeats the above steps to clamp and machine the next workpiece.

[0004] However, this machining method relying on manual loading and unloading gradually exposes significant limitations in actual production. On the one hand, the automobile parts production line usually needs to realize mass production and continuous production, and the operator needs to complete hundreds or even thousands of workpiece clamping and dismounting operations in a single workday, and frequent handling, alignment and clamping operations will cause the labor intensity of the operator to increase sharply. On the other hand, the manual loading and unloading process will inevitably cause the machine tool to be idle, and after the workpiece turning machining is completed, the spindle needs to stop rotating to wait for the operator to take down the workpiece, and after the new workpiece is clamped and fixed and the position is confirmed to be correct, the machine tool can be restarted to enter the next machining cycle. Therefore, how to optimize the loading and unloading process of the cylindrical aluminum alloy workpiece, reduce manual intervention and shorten the waiting time for changing materials has become a key technical problem for improving the machining efficiency of automobile aluminum alloy parts and reducing labor intensity. Therefore, we propose a numerical control machine tool for machining automobile aluminum alloy parts. SUMMARY

[0005] The purpose of the present application is to provide a numerical control machine tool for machining automobile aluminum alloy parts to solve the problems raised in the background.

[0006] The present application is realized by the following technical solutions:

[0007] A numerical control machine tool for processing automobile aluminum alloy parts, comprising a machine tool body, one end of the workbench of the machine tool body is provided with a spindle box, the other end of the workbench is provided with a sliding tool holder, further comprising:

[0008] A rotating disc is coaxially fixedly connected with the output shaft of the spindle box, at least three loading grooves are evenly arranged on the outer ring wall of the rotating disc, the loading grooves are in U shape, a flared groove is arranged on the front surface of the rotating disc and located at the loading groove, and a rotation seat in the shape of an arc is rotatably arranged in the flared groove.

[0009] A loading mechanism is arranged obliquely above the rotating disc, the loading mechanism comprises a mounting seat and a loading disc, a plurality of storage grooves are uniformly and spacedly arranged on the outer peripheral wall of the loading disc, when the storage grooves and the loading grooves are aligned and distributed, the workpieces in the storage grooves can roll into the corresponding loading grooves.

[0010] A clamping mechanism corresponds to the loading grooves one by one, the clamping mechanism comprises a clamping ring, the clamping ring is coaxially arranged with the corresponding rotation seat, the clamping ring is a hollow structure, the clamping ring is provided with a clamping assembly in the inside, the clamping assembly comprises at least three clamping heads, one end of the clamping head extends into the inner ring of the clamping ring, and the clamping head is slidably connected with the clamping ring along the radial direction of the clamping ring.

[0011] A rotation driving mechanism is arranged on the workbench of the machine tool body, the rotation driving mechanism is located on one side of the rotating disc, and the rotation driving mechanism is used for driving any clamping ring to rotate.

[0012] The clamping mechanism and the corresponding rotation seat are slidably connected along the axial direction of the rotating disc, the clamping mechanism further comprises a linear driving assembly for driving the clamping ring to slide along the axial direction, and when the clamping ring approaches the rotation seat, the clamping heads slide towards the center of the clamping ring.

[0013] Optionally, the mounting seat has an arc-shaped blocking wall located on the side of the loading disc, when the workpieces on the loading disc rotate to be opposite to the region of the arc-shaped blocking wall, the arc-shaped blocking wall can prevent the workpieces from falling off.

[0014] Optionally, the back surface of the rotating disc and the position of the loading groove are provided with a stabilizing sleeve, the stabilizing sleeve is in U shape and matches the profile of the loading groove.

[0015] Optionally, the width of the notch of the rotation seat is not less than the opening width of the loading groove, a fitting ring in the shape of an arc is fixedly arranged in the flared groove, the fitting ring is arranged outside the rotation seat, a plurality of rollers are rotatably arranged on the fitting ring at uniform intervals, and the rollers are in rolling fit with the outer ring wall of the rotation seat.

[0016] Optionally, the front surface of the rotating seat is provided with three guide rods at equal intervals in the circumferential direction, and the three guide rods are movably penetrated through the corresponding material clamping rings.

[0017] Optionally, the material clamping assembly comprises a driving ring coaxially arranged with the material clamping ring and located inside the material clamping ring, the driving ring is rotationally connected with the inner ring of the material clamping ring, and the upper surface of the driving ring is protrusively formed with a helical tooth, and the bottom surface of the chuck is threadedly matched with the helical tooth.

[0018] The two sides of the chuck are slidably provided with baffle plates fixedly connected with the inner wall of the material clamping ring.

[0019] Optionally, the material clamping assembly further comprises a driving gear ring located inside the material clamping ring and outside the driving ring, the driving gear ring is rotationally connected with the inner wall of the material clamping ring, and the outer peripheral wall of the driving ring is fixedly sleeved with a driven gear ring, and the driven gear ring and the driving gear ring are engaged.

[0020] One of the guide rods penetrates through the inner side of the driving gear ring, and the outer surface of the guide rod is provided with a helical groove, and the inner ring of the driving gear ring is protrusively formed with a guide protrusion, and the guide protrusion is movably embedded in the helical groove.

[0021] Optionally, the linear drive assembly comprises a linear module and a retaining sleeve, the linear module is fixedly installed on the front surface of the rotating disc and is distributed along the axial direction of the rotating disc, and the retaining sleeve is rotationally sleeved on the outside of the material clamping ring, and the retaining sleeve is further fixedly connected with the movable end of the linear module.

[0022] Optionally, the rotating drive mechanism comprises a driving motor and a driving gear wheel in transmission connection with the output shaft of the driving motor, and the outside of the material clamping ring is fixedly sleeved with a driving gear ring; when the material clamping ring moves to a position directly opposite the rotating drive mechanism, the driving gear wheel can be engaged with the corresponding driving gear ring.

[0023] Optionally, the back surface of the mounting seat is provided with a loading servo motor, and the output shaft of the loading servo motor is coaxially connected with the loading disc.

[0024] Compared with the prior art, the present application provides a numerical control machine tool for machining of automobile aluminum alloy parts, which has the following beneficial effects:

[0025] 1. The cooperation of the loading mechanism and the rotating disc can automatically drop the workpiece into the loading groove, the material clamping mechanism on the rotating disc can automatically clamp and fix the workpiece, and the rotating drive mechanism can control the rotation of the material clamping ring and the workpiece around the center axis thereof, so that the present application can reduce the degree of manual intervention in the loading process, which not only helps to reduce the labor intensity of workers, but also effectively improves the processing efficiency.

[0026] 2. The application can realize the rotation of the clamping ring and avoid the hindering of the workpiece into the loading groove, so as to facilitate the automatic rolling of the workpiece into the loading groove.

[0027] 3. The front and back movement of the clamping ring can automatically realize the radial movement of the clamping head, so as to realize the automatic clamping process of the workpiece without manual adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of the application;

[0029] Figure 2 is a schematic diagram of the rotating disc and the loading mechanism of the application;

[0030] Figure 3 is a schematic diagram of the rotating disc and the clamping mechanism of the application;

[0031] Figure 4 is a schematic diagram of the rotating disc structure of the application;

[0032] Figure 5 is a schematic diagram of the rotating seat and the assembly ring structure of the application;

[0033] Figure 6 is a schematic diagram of the loading mechanism of the application;

[0034] Figure 7 is a top view of the inside of the clamping ring of the application;

[0035] Figure 8 is a sectional view of the clamping ring structure of the application;

[0036] Figure 9 is Figure 8 is an enlarged view of position A in the above figure.

[0037] In the figure: 100, machine tool body; 200, main shaft box; 300, sliding tool holder; 400, rotating disc; 401, loading groove; 402, flared groove; 403, rotating seat; 404, assembly ring; 405, roller; 406, stabilizing sleeve; 500, loading mechanism; 501, mounting seat; 502, loading disc; 503, storage groove; 504, servo motor; 505, arc-shaped blocking wall; 600, clamping mechanism; 601, clamping ring; 602, guide rod; 603, clamping head; 604, driving ring; 605, helical tooth; 606, blocking edge plate; 607, driving tooth ring; 608, driven tooth ring; 609, helical groove; 610, guide protrusion; 611, linear module; 612, retaining sleeve; 613, driving tooth ring; 700, rotary driving mechanism; 701, driving motor; 702, driving gear. DETAILED DESCRIPTION

[0038] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0039] Please refer to Figure 1 - Figure 9 A numerical control machine tool for processing automobile aluminum alloy parts comprises a machine tool body 100, a main shaft box 200 is arranged at one end of a workbench of the machine tool body 100, and a sliding tool holder 300 is arranged at the other end of the workbench. Specifically, the main shaft box 200 has a motor and a transmission assembly inside, and the motor controls the rotation of the main shaft through the transmission assembly. The sliding tool holder 300 can slide left and right, and carries a tool to approach or move away from the main shaft box 200 to realize turning processing.

[0040] The embodiment also comprises a rotating disc 400, a loading mechanism 500 and a material clamping mechanism 600. The rotating disc 400 is coaxially fixedly connected with an output shaft of the main shaft box 200. At least three loading grooves 401 are arranged at equal intervals on the outer ring wall of the rotating disc 400, and the loading grooves 401 are in U-shaped. A flared groove 402 is also arranged on the front surface of the rotating disc 400 and located at the loading grooves 401. A rotation seat 403 in an arc shape is rotatably arranged in the flared groove 402. In this embodiment, the loading grooves 401 are three, the flared groove 402 is circular, and the center of the flared groove 402 coincides with the center of the inner end circular segment of the loading grooves 401. The center of the rotation seat 403 also coincides with the center of the flared groove 402, and the rotation seat 403 can rotate around its own center.

[0041] Specifically, the gap width of the rotation seat 403 is not less than the opening width of the loading groove 401. A fitting ring 404 in an arc shape is fixedly arranged in the flared groove 402. The fitting ring 404 is sleeved on the outside of the rotation seat 403. A plurality of rollers 405 are rotatably arranged on the fitting ring 404 at equal intervals, and the rollers 405 are in rolling fit with the outer ring wall of the rotation seat 403. The fitting ring 404 comprises two arc-shaped ring pieces which are symmetrically distributed in mirror image. The rollers 405 are rotatably arranged between the two ring pieces, and the rollers 405 are in the shape of an ellipsoid with thick middle and thin ends. The outer ring wall of the rotation seat 403 is concave to match the shape of the rollers 405. Therefore, the rollers 405 not only allow the rotation seat 403 to rotate around its own center, but also prevent the rotation seat 403 from moving along its own axial direction, thereby maintaining the stability of the rotation seat 403.

[0042] It is worth mentioning that the rotation seat 403 and the fitting ring 404 in this embodiment are made of stainless steel, and the rollers 405 are made of high chromium steel, which has high strength characteristics.

[0043] In the embodiment, the charging mechanism 500 is arranged obliquely above the rotating disc 400, and the charging mechanism 500 comprises a mounting seat 501 and a charging disc 502. The outer peripheral wall of the charging disc 502 is uniformly and spacedly provided with a plurality of storage grooves 503. When the storage grooves 503 and the charging grooves 401 are aligned and distributed, the workpieces in the storage grooves 503 can roll into the corresponding charging grooves 401. Specifically, one end of the mounting seat 501 is provided with a connecting frame which is fixedly connected to the machine tool body 100 by bolts, and the charging mechanism 500 is located obliquely above the rotating disc 400 and close to one side of the outer portion, so as to facilitate the user to charge. The back surface of the mounting seat 501 is provided with a charging servo motor 504, and the output shaft of the charging servo motor 504 is coaxially connected with the charging disc 502. The charging servo motor 504 is used to drive the charging disc 502 to rotate intermittently, and the rotating angle of each time is consistent with the included angle between the adjacent two storage grooves 503.

[0044] Further, the mounting seat 501 has an arc-shaped blocking wall 505 located on the side of the charging disc 502. As shown in Figure 2 , when the workpieces on the charging disc 502 rotate to the region opposite to the arc-shaped blocking wall 505, the arc-shaped blocking wall 505 can prevent the workpieces from falling. The center of the arc-shaped blocking wall 505 coincides with the center of the charging disc 502. When the charging disc 502 carrying the workpieces enters the region opposite to the arc-shaped blocking wall 505, the inner surface of the arc-shaped blocking wall 505 only has a small gap with the workpieces, so it can prevent the workpieces from falling. In addition, it is worth mentioning that the number of the storage grooves 503 in the embodiment is 10, and the included angle between the adjacent two storage grooves 503 is 36°.

[0045] It should be noted that the plurality of storage grooves 503 on the charging disc 502 need to be manually charged at regular intervals, and a plurality of workpieces can be charged each time. In the embodiment, the charging disc 502 and the rotating disc 400 are both rotated clockwise, and the rotating disc 400 also adopts intermittent rotation, and the rotating angle of each time is also the included angle between the adjacent two charging grooves 401. Specifically, in the application process, the rotating disc 400 is first rotated by 120° and then fixed, and then the charging disc 502 is rotated by 36°. When the storage grooves 503 move away from the arc-shaped blocking wall 505, they can be opposite to one charging groove 401 located obliquely above, as shown in Figure 2 , at this time, the workpieces can automatically roll into the charging groove 401.

[0046] It is worth mentioning that the back surface of the rotating disc 400 and located at the position of the charging groove 401 is provided with a stabilizing sleeve 406, which is U-shaped and matches the profile of the charging groove 401. As shown in Figure 3 , the stabilizing sleeve 406 is fixedly welded to the back surface of the rotating disc 400. The stabilizing sleeve 406 supports the workpieces, and the side of the stabilizing sleeve 406 away from the rotating disc 400 has an end cover. It should be noted that, in order to facilitate the display of the clamping mechanism 600, Figure 3Only one set of the material clamping mechanism 600 is shown on the transfer rotary disc 400.

[0047] The structure of the material clamping mechanism 600 is described as follows:

[0048] The material clamping mechanism 600 corresponds to the loading groove 401 one by one, and the material clamping mechanism 600 comprises a material clamping ring 601 which is coaxially arranged with the corresponding rotary seat 403. The material clamping ring 601 is internally hollow, and comprises two front and back walls in the form of a circular ring, and two inner and outer walls in the form of an inner and outer concentric distribution. The front and back walls, the inner wall and the outer wall jointly form an internally hollow circular ring structure, as shown in Figure 8 and Figure 9 The end faces of the inner and outer walls are bolted and fixed with the front and back walls, respectively.

[0049] Specifically, the front surface of the rotary seat 403 is provided with three guide rods 602 at equal intervals in the circumferential direction, and the three guide rods 602 are movably penetrated through the corresponding material clamping ring 601. The guide rods 602 are riveted and fixed with the rotary seat 403, and are distributed along the axial direction of the rotary seat 403. The front and back walls of the material clamping ring 601 are provided with through holes for the guide rods 602 to pass through.

[0050] In the embodiment, the inside of the material clamping ring 601 is provided with a material clamping assembly, which comprises at least three clamping heads 603. One end of the clamping head 603 extends into the inner ring of the material clamping ring 601, and the clamping head 603 is slidably connected with the material clamping ring 601 along the radial direction of the material clamping ring 601. Specifically, the inner wall of the material clamping ring 601 is provided with an opening for the clamping head 603 to pass through, and the end of the clamping head 603 extending into the inner ring of the material clamping ring 601 is used to abut against the workpiece.

[0051] In some embodiments of the present application, the material clamping assembly further comprises a driving ring 604 which is coaxially arranged with the material clamping ring 601 and located inside the material clamping ring 601. The driving ring 604 is rotatably connected with the inner ring of the material clamping ring 601 through a bearing, and the upper surface of the driving ring 604 is protrudingly formed with a helical tooth 605, as shown in Figure 7 The bottom surface of the clamping head 603 is threadedly connected with the helical tooth 605. The two sides of the clamping head 603 are slidably provided with a stop plate 606 which is fixedly connected with the inner wall of the material clamping ring 601. The stop plate 606 is used to limit the clamping head 603, so that the clamping head 603 can only move along the radial direction of the material clamping ring 601. Therefore, when the driving ring 604 rotates, the clamping head 603 can be driven to slide back and forth along the radial direction of the material clamping ring 601 due to the thread cooperation.

[0052] Further, the clamping assembly further comprises a driving gear ring 607 located inside the clamping ring 601 and outside the driving ring 604, the driving gear ring 607 is rotationally connected with the inner wall of the clamping ring 601, the outer peripheral wall of the driving ring 604 is fixedly sleeved with a driven gear ring 608, the driven gear ring 608 and the driving gear ring 607 are in meshing engagement; one guide rod 602 passes through the inside of the driving gear ring 607, the outer surface of the guide rod 602 is provided with a spiral groove 609, the inner ring of the driving gear ring 607 is protrudingly formed with a guide protrusion 610, and the guide protrusion 610 is movably embedded in the spiral groove 609. Therefore, when the clamping ring 601 slides along the guide rod 602, the guide protrusion 610 can move along the spiral groove 609, so that the driving gear ring 607 and the driving ring 604 are rotated.

[0053] It should be noted that the rear wall of the driving gear ring 607 and the clamping ring 601 are rotationally connected through bearings. The guide protrusion 610 is in a semispherical shape, and the surface of the guide protrusion 610 and the inner surface of the spiral groove 609 are chrome-plated and smoothed to reduce the sliding friction therebetween, so that the guide protrusion 610 can more smoothly slide inside the spiral groove 609.

[0054] In the embodiment, the clamping mechanism 600 further comprises a linear driving assembly for driving the clamping ring 601 to slide in the axial direction, when the clamping ring 601 approaches the rotating seat 403, the clamping heads 603 slide towards the center of the clamping ring 601. Specifically, the linear driving assembly comprises a linear module 611 and a retaining sleeve 612, the linear module 611 can be a hydraulic sliding table in the embodiment, the linear module 611 is fixedly installed on the front surface of the rotating disc 400, and the linear module 611 is distributed along the axial direction of the rotating disc 400, the retaining sleeve 612 is rotationally sleeved outside the clamping ring 601, and the retaining sleeve 612 is further fixedly connected with the movable end of the linear module 611. Therefore, the clamping ring 601 can be directly driven to slide in the axial direction of the guide rod 602 through the linear driving assembly, and when the clamping ring 601 gradually approaches the rotating disc 400, the clamping heads 603 will gradually approach the center of the clamping ring 601; when the clamping ring 601 gradually moves away from the rotating disc 400, the clamping heads 603 will also gradually move away from the center of the clamping ring 601, so that the workpiece is clamped or released.

[0055] It is worth mentioning that the driving of the hydraulic sliding table needs the power provided by the hydraulic system, and the connection of the hydraulic system and the hydraulic sliding table cannot be separated from the hydraulic pipeline. In order to avoid the continuous rotation of the rotating disc 400 from winding the hydraulic pipeline, in the embodiment, every time the rotating disc 400 rotates clockwise for 3 turns, the rotating disc 400 rotates counterclockwise for 3 turns to return to the original position, and then the intermittent clockwise rotation is repeated.

[0056] In some embodiments of the present application, the embodiment further comprises a rotary driving mechanism 700 arranged on the workbench of the machine tool body 100, the rotary driving mechanism 700 is located at one side of the rotating disc 400, and the rotary driving mechanism 700 is used to drive any material clamping ring 601 to rotate; specifically, the rotary driving mechanism 700 comprises a driving motor 701 and a driving gear 702 in transmission connection with the output shaft of the driving motor 701, and the outer part of the material clamping ring 601 is fixedly sleeved with a driving gear ring 613; when the material clamping ring 601 moves to a position opposite to the rotary driving mechanism 700, the driving gear 702 can be engaged with the corresponding driving gear ring 613. It should be noted that the driving gear 702 is arranged on the workbench through a gear seat, and the driving gear 702 and the output shaft of the driving motor 701 are in transmission connection through a synchronous belt.

[0057] It should be noted that the rotary driving mechanism 700 is located on the inner side of the machine tool workbench, when one of the rotary seats 403 rotates to the inner side of the machine tool and is consistent with the center height of the rotating disc 400, as shown in Figure 2 , the rotary seat 403 is consistent with the center height of the driving gear 702.

[0058] In summary, in the actual application process of the embodiment, the rotating disc 400 and the material loading disc 502 are intermittently rotated, when the storage groove 503 on the material loading disc 502 is rotated to align with the material loading groove 401, the cylindrical workpiece in the storage groove 503 can be automatically rolled into the material loading groove 401. It should be noted that at this time, the material clamping ring 601 is located away from the rotating disc 400, and the workpiece will not be hindered by the material clamping ring 601 and the guide rod 602 when entering the material loading groove 401.

[0059] Subsequently, the linear driving assembly controls the material clamping ring 601 to approach the rotating disc 400, and in the movement process of the material clamping ring 601, the clamping heads 603 also gradually approach the center of the material clamping ring 601, until the clamping heads 603 abut against the surface of the workpiece, so as to clamp the workpiece. At this time, since the position of the clamping head 603 is limited by the workpiece, the positions of the driving ring 604 and the driving gear ring 607 are also fixed, so that the material clamping ring 601 cannot continue to move. It is worth mentioning that since the diameter of the workpiece is a certain value, when the material clamping ring 601 cannot continue to move, the distance between the material clamping ring 601 and the rotating disc 400 is also a certain value.

[0060] When the workpiece located in the machining position is machined, the rotating disc 400 rotates again by 120° clockwise, so that the above-mentioned machined workpiece also enters the position opposite to the rotating driving mechanism 700, at this time the driving gear 702 and the driving gear ring 613 are engaged, and then the driving motor 701 is started and drives the workpiece to rotate around its center axis. Then the sliding tool holder 300 is automatically controlled by the program to approach the workpiece, and the workpiece is turned. After finishing, the sliding tool holder 300 is reset to the right, the driving motor 701 is temporarily stopped, the rotating disc 400 rotates again by 120°, and the above-mentioned process is repeated, so that the automatic machining of the workpiece is completed.

[0061] When the machined workpiece rotates to the position located obliquely below the rotating disc 400, if the gap of the rotating seat 403 is not aligned with the opening of the loading groove 401, the workpiece may not fall smoothly, at this time manual assistance is needed to rotate the rotating seat 403, so that the workpiece automatically falls. It is worth mentioning that although the workpiece loading and unloading in the embodiment also needs manual intervention, compared with the chuck clamping mode, the loading and unloading in the embodiment is obviously simpler; in addition, since the embodiment has three loading grooves 401, the three loading grooves 401 are alternately located in the machining position, which can greatly reduce the waiting time and improve the machining efficiency.

[0062] In addition, the material clamping ring 601 in the embodiment is fixed by the guide rod 602 and the linear module 611, so that the fixing accuracy of the workpiece is lower than that of the traditional chuck to some extent, so the embodiment is more suitable for machining some aluminum alloy parts with low precision requirements, such as some protective parts, covering parts, connecting parts, rather than workpieces involving transmission and motion cooperation.

[0063] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a…" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0064] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A CNC machine tool for machining automotive aluminum alloy parts, comprising a machine tool body, wherein a spindle box is provided at one end of the worktable of the machine tool body, and a sliding tool post is provided at the other end of the worktable, characterized in that, Also includes: A rotating disk is coaxially and fixedly connected to the output shaft of the spindle box. At least three loading slots are equally spaced on the outer ring wall of the rotating disk. The loading slots are U-shaped. A flared slot is also provided on the front of the rotating disk at the loading slot. A rotating seat with an arc shape is rotatably installed in the flared slot. The loading mechanism is located diagonally above the rotating disk. The loading mechanism includes a mounting base and a loading plate. The outer peripheral wall of the loading plate is evenly spaced with a plurality of storage troughs. When the storage troughs and the loading troughs are aligned, the workpieces in the storage troughs can roll into the corresponding loading troughs. The clamping mechanism corresponds one-to-one with the loading slot. The clamping mechanism includes a clamping ring, which is coaxially arranged with the corresponding rotating seat. The clamping ring has an internal hollow structure and a clamping assembly is provided inside the clamping ring. The clamping assembly includes at least three clamps, one end of which extends into the inner ring of the clamping ring and slides in cooperation with the clamping ring along the radial direction of the clamping ring. A rotary drive mechanism is mounted on the worktable of the machine tool body. The rotary drive mechanism is located on one side of the rotating disk and is used to drive any clamping ring to rotate. The clamping mechanism and the corresponding rotating seat slide together along the axial direction of the rotating disk. The clamping mechanism also includes a linear drive assembly for driving the clamping ring to slide along the axial direction. When the clamping ring approaches the rotating seat, several clamps slide toward the center of the clamping ring.

2. The CNC machine tool for machining automotive aluminum alloy parts according to claim 1, characterized in that: The mounting base has an arc-shaped baffle on the side of the loading tray. When the workpiece on the loading tray rotates to the area facing the arc-shaped baffle, the arc-shaped baffle can prevent the workpiece from falling.

3. A CNC machine tool for machining automotive aluminum alloy parts according to claim 1, characterized in that: A stabilizing sleeve is provided on the back of the rotating disk and at the position of the loading trough. The stabilizing sleeve is U-shaped and matches the contour of the loading trough.

4. A CNC machine tool for machining automotive aluminum alloy parts according to any one of claims 1 or 3, characterized in that: The notch width of the rotating seat is not less than the opening width of the loading groove. An assembly ring with an arc shape is fixedly provided in the flared groove. The assembly ring is sleeved on the outside of the rotating seat. Several rollers are evenly spaced and rotated on the assembly ring. The rollers roll and fit against the outer ring wall of the rotating seat.

5. A CNC machine tool for machining automotive aluminum alloy parts according to claim 1, characterized in that: The rotating seat has three guide rods evenly spaced along its circumference on its front side, and all three guide rods movably pass through the corresponding clamping rings.

6. A CNC machine tool for machining automotive aluminum alloy parts according to claim 5, characterized in that: The clamping assembly includes a drive ring, which is coaxially arranged with the clamping ring and located inside the clamping ring. The drive ring is rotatably connected to the inner ring of the clamping ring. The upper surface of the drive ring is formed with helical teeth, and the bottom surface of the chuck is threadedly engaged with the helical teeth. Both sides of the clamp are slidably provided with side plates, which are fixedly connected to the inner wall of the clamping ring.

7. A CNC machine tool for machining automotive aluminum alloy parts according to claim 6, characterized in that: The clamping assembly also includes an active gear ring located inside the clamping ring and outside the drive ring. The active gear ring is rotatably connected to the inner wall of the clamping ring. A driven gear ring is fixedly fitted on the outer peripheral wall of the drive ring. The driven gear ring and the active gear ring mesh with each other. One of the guide rods passes through the inner side of the active gear ring, and a spiral groove is formed on the outer surface of the guide rod. The inner ring of the active gear ring has a protruding guide protrusion that is movably embedded in the spiral groove.

8. A CNC machine tool for machining automotive aluminum alloy parts according to claim 1, characterized in that: The linear drive assembly includes a linear module and a retaining sleeve. The linear module is fixedly installed on the front of the rotating disk and is distributed along the axial direction of the rotating disk. The retaining sleeve is rotatably sleeved outside the clamping ring and is also fixedly connected to the movable end of the linear module.

9. A CNC machine tool for machining automotive aluminum alloy parts according to claim 1, characterized in that: The rotary drive mechanism includes a drive motor and a drive gear that is connected to the output shaft of the drive motor. A drive gear ring is fixedly fitted on the outside of the clamping ring. When the clamping ring moves to a position directly opposite the rotary drive mechanism, the drive gear can mesh with the corresponding drive gear ring.

10. A CNC machine tool for machining automotive aluminum alloy parts according to claim 1, characterized in that: The back of the mounting base is equipped with a loading servo motor, and the output shaft of the loading servo motor is coaxially connected to the loading tray.

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