Five-axis turning and milling combined machining center

Abstract

A five-axis turning and milling combined machining center comprises a base, a main shaft mounting mechanism, a main shaft, a rotary table, a chuck and a tool magazine. The main shaft mounting mechanism comprises a first mounting seat which is connected to the base in a sliding manner and can move left and right, a second mounting seat which is connected to the first mounting seat in a sliding manner and can move front and back, a third mounting seat which is connected to the second mounting seat in a sliding manner and can move up and down, and a rotary driving device which is mounted on the third mounting seat; the main shaft is mounted on the rotary driving device and is driven by the rotary driving device to rotate along a B axis; the rotary table is installed on the base, and the central axis of the rotary table is arranged in the vertical direction. The chuck is mounted on the base, the central axis of the chuck is horizontally and transversely arranged, and a clamping part is arranged on the chuck; the tool magazine is installed on the side, away from the chuck, of the workbench, a plurality of tool sleeves are arranged on the tool magazine, and an opening of a containing cavity of each tool sleeve faces the side of the rotary table. Compared with the prior art, the machining center can conduct turn-milling machining, the tool changing structure is simple, and efficiency is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of five-axis machining centers, and particularly relates to a five-axis turning and milling compound machining center. Background Art

[0002] In the field of traditional machining, turning and milling, as basic processes, usually need to be completed on dedicated lathes and milling machines respectively. This sequential machining mode has problems such as high equipment investment cost and low process connection efficiency. To solve the above problems, the turning and milling compound machining technology has emerged. For example, based on an existing milling machine, by adding a chuck and replacing the spindle tool with a turning tool, turning machining can be achieved.

[0003] To facilitate tool change and improve machining efficiency, a tool magazine and a tool change mechanism are configured in the machining center. The structure of this mechanism is complex, and during the tool change process, the tool change mechanism needs to remove the tool on the spindle and replace it with a new corresponding tool at the same time, and the tool change process is cumbersome. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a five-axis turning and milling compound machining center.

[0005] To achieve the above purpose, the present invention discloses a five-axis turning and milling compound machining center, including a base, a spindle mounting mechanism, a spindle, a turntable, a chuck, and a tool magazine;

[0006] The spindle mounting mechanism includes a first mounting seat, a second mounting seat, a third mounting seat, and a rotation driving device. The first mounting seat is slidably connected to the base and can move left and right. The second mounting seat is slidably connected to the first mounting seat and can move forward and backward. The third mounting seat is slidably connected to the second mounting seat and can move up and down. The rotation driving device is mounted on the third mounting seat, and the spindle is mounted on the rotation driving device and rotates along the B axis under the drive of the rotation driving device;

[0007] The turntable is mounted on the base, and the central axis of the turntable is the C axis arranged in the vertical direction;

[0008] The chuck is mounted on the base, the central axis of the chuck is the A axis arranged horizontally, and the chuck is provided with a clamping portion for clamping the product to be machined and driving it to rotate along the A axis;

[0009] The tool magazine is mounted on one side of the workbench away from the chuck, and the tool magazine is provided with a plurality of tool sleeves, and the accommodating cavity opening of each tool sleeve faces the turntable side.

[0010] In one embodiment, the tool magazine is located on the front side of the first mounting seat.

[0011] In another embodiment, the tool magazine is on the front side of the spindle, and the second mounting base can move forward to align the tool on the spindle with the corresponding tool sleeve.

[0012] In another embodiment, the tool magazine is a ring-rail type tool magazine, and the tool sleeves are arranged on the upper part of the ring rail of the tool magazine. Under working conditions, all the tool sleeves are located above the tool magazine.

[0013] In another embodiment, the clamping part faces the turntable side.

[0014] In another embodiment, gratings are provided between the base and the first mounting base, between the first mounting base and the second mounting base, and between the second mounting base and the third mounting base.

[0015] In another embodiment, a threaded sleeve is provided at the bottom of the first mounting base, and a left-right movement assembly is provided between the base and the first mounting base;

[0016] The front-back movement assembly includes two guide rails, a plurality of sliders respectively arranged on the two guide rails, a motor, and a lead screw; the two guide rails are both installed on the base and arranged in the left-right direction, the plurality of sliders are installed at the bottom of the first mounting base, the motor is installed on the base, and the lead screw is connected to the motor and cooperates with the threaded sleeve.

[0017] In another embodiment, the projection of the second mounting base in the front-back direction is in the shape of a Chinese character 'Ri', and the projection of the second mounting base in the left-right direction is in the shape of a right trapezoid.

[0018] In another embodiment, the height of the chuck is higher than that of the turntable, and the central axis of the chuck is located on the side of the central axis of the turntable close to the spindle.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The spindle mounting mechanism can realize left-right, front-back and up-down movements through the first mounting base, the second mounting base and the third mounting base. At the same time, the rotary drive device can realize rotation along the B axis. During machining, the spindle can be moved to the machining position for machining through the three mounting bases and the rotary drive device; when changing tools, the rotary drive device turns the spindle towards the tool magazine, and at the same time, under the action of the three mounting bases, the spindle is moved to put the tool back into the tool sleeve to realize tool disassembly; then it is moved to the corresponding position to install the corresponding tool to realize tool change. The whole tool change process is completed in one go, improving the tool change efficiency. The four-axis linkage on the spindle mounting mechanism can not only be used for machining, but also for tool change, eliminating the need to set up a traditional tool change mechanism, and the structure is simpler and more compact.

[0021] The rotation drive device drives the main shaft to rotate along the B axis, which not only adjusts the machining orientation of the main shaft, but also facilitates milling and turning operations, making it easier to process products. Moreover, it can rotate the cutting tool on the main shaft towards the tool sleeve for tool change, simplifying the tool change structure and making the tool change structure more compact.

[0022] The turntable is used to fix the product to be machined and can drive the product to be machined to rotate to adjust the machining orientation. The main shaft mounting mechanism is equipped with a milling cutter and a turning tool, which can correspondingly achieve milling and turning operations; the chuck can fix the product to be machined, and the main shaft can also perform turning operations after being equipped with a turning tool. Milling and turning operations can be achieved through a single machining center, reducing equipment costs and improving machining efficiency at the same time. Brief Description of the Drawings

[0023] Figure 1 is a schematic three-dimensional structure diagram of a five-axis turning-milling compound machining center according to an embodiment;

[0024] Figure 2 is a schematic three-dimensional structure diagram of another perspective of the five-axis turning-milling compound machining center according to the embodiment;

[0025] Base 100; main shaft mounting mechanism 200; first mounting seat 210; second mounting seat 220; third mounting seat 230; rotation drive device 240; main shaft 300; turntable 400; chuck 500; clamping part 510; tool magazine 600; tool sleeve 610; left and right moving assembly 700; guide rail 710; slider 720; motor 730; lead screw 740. Detailed Description of the Embodiment

[0026] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] A five-axis turning-milling compound machining center, see Figure 1 - Figure 2, including a base 100, a spindle mounting mechanism 200, a spindle 300, a turntable 400, a chuck 500 (such as a three-jaw chuck 500), and a tool magazine 600. The spindle mounting mechanism 200 includes a first mounting seat 210, a second mounting seat 220, a third mounting seat 230, and a rotary drive device 240 (specifically a indexing turntable). The first mounting seat 210 is slidably connected to the base 100 and can move left and right. The second mounting seat 220 is slidably connected to the first mounting seat 210 and can move forward and backward. The third mounting seat 230 is slidably connected to the second mounting seat 220 and can move up and down. The rotary drive device 240 is mounted on the third mounting seat 230, and the spindle is mounted on the rotary drive device 240 and rotates along the B axis under the drive of the rotary drive device 240. The turntable 400 is mounted on the base 100, and the central axis of the turntable 400 is the C axis arranged in the vertical direction; the chuck 500 is mounted on the base 100, and the central axis of the chuck 500 is the A axis arranged in the horizontal transverse direction. The chuck 500 is provided with a clamping portion 510, and the clamping portion 510 is used for clamping the product to be processed and driving it to rotate along the A axis; the tool magazine 600 is mounted on the side of the workbench away from the chuck 500, and the tool magazine 600 is provided with a plurality of tool sleeves 610, and the accommodating cavity opening of each tool sleeve 610 faces the turntable 400 side.

[0028] For the above machining center, the spindle mounting mechanism 200 can move left and right, forward and backward, and up and down through the first mounting seat 210, the second mounting seat 220, and the third mounting seat 230. At the same time, the rotary drive device 240 can rotate along the B axis. During machining, the spindle can be moved to the machining position for machining through the three mounting seats and the rotary drive device 240; during tool change, the rotary drive device 240 turns the spindle towards the tool magazine 600, and at the same time, under the action of the three mounting seats, the spindle is moved to place the tool back into the tool sleeve 610 to realize tool disassembly; then it is moved to the corresponding position to install the corresponding tool to realize tool change. The entire tool change process is completed in one go, improving the tool change efficiency. The four-axis linkage on the spindle mounting mechanism 200 can not only be used for machining but also for tool change, eliminating the need to set up a traditional tool change mechanism, making the structure simpler and more compact. The rotary drive device 240 drives the spindle to rotate along the B axis, which not only adjusts the machining orientation of the spindle but also facilitates milling and turning machining, is convenient for machining products, and can turn the tool on the spindle towards the tool sleeve 610 for tool change, simplifying the tool change structure and making the tool change structure more compact. The turntable 400 is used to fix the product to be processed and can drive the product to be processed to rotate to adjust the machining orientation. The spindle mounting mechanism 200 is equipped with a milling cutter and a turning tool, which can respectively realize milling machining and turning machining; the chuck 500 can fix the product to be processed, and the spindle can also perform turning machining after installing a turning tool. Milling and turning machining can be realized through one machining center, reducing the equipment cost and improving the machining efficiency at the same time.

[0029] In this embodiment, a threaded sleeve is provided at the bottom of the first mounting base 210, and a left - right moving assembly 700 is provided between the base 100 and the first mounting base 210. The front - rear moving assembly includes two guide rails 710, a plurality of sliders 720 respectively arranged on the two guide rails, a motor 730, and a lead screw 740. The two guide rails are both mounted on the base 100 and arranged in the left - right direction. The plurality of sliders are mounted on the bottom of the first mounting base 210. The motor is mounted on the base 100, and the lead screw is connected to the motor and mates with the threaded sleeve. Under working conditions, the motor drives the lead screw to rotate, and the lead screw drives the first mounting base 210 to move left and right along the guide rails.

[0030] The same transmission method is also adopted between the first mounting base 210 and the second mounting base 220, and between the second mounting base 220 and the third mounting base 230, which is driven by a lead screw and a threaded sleeve.

[0031] In this embodiment, the tool magazine 600 is located on the front side of the first mounting base 210. In this way, there is enough space at the rear side of the base 100 to arrange the guide rails. The guide rails can be selected with a longer length, which can increase the moving stroke of the first mounting base 210, enabling the machining center to machine parts with a longer length. In addition, it also ensures that the spindle can move to a position close to the tool magazine 600 to ensure tool change can be carried out.

[0032] Furthermore, the tool magazine 600 is on the front side of the spindle. In this way, it can avoid interference between the spindle and the tool magazine 600 under working conditions. Moreover, when turning machining is carried out using the chuck 500, the tool magazine 600 will not interfere with longer shaft - type products, and it can meet the machining of longer shaft - type products. The second mounting base 220 can move forward to align the tool on the spindle with the corresponding tool sleeve 610, which can not only achieve machining but also achieve spindle tool change.

[0033] In this embodiment, the tool magazine 600 is a ring - guide - type tool magazine 600. For example, for the chain - type tool magazine 600 provided in the authorized announcement number CN212858701U, tool sleeves 610 are arranged on a part of the ring guide of the tool magazine 600. Under working conditions, all the tool sleeves 610 are located above the tool magazine 600. In this way, the problem of the tool sleeves 610 being contaminated during the machining process can be reduced.

[0034] In this embodiment, the clamping portion 510 faces the side of the turntable 400. In this way, the clamping portion 510 and the turntable 400 are arranged in the same direction, enabling the turning spindle (chuck 500) and the milling spindle (turntable 400) to form an overlapping machining area, which can reduce the size of the machining center and make the mechanism compact.

[0035] In this embodiment, gratings are provided between the base 100 and the first mounting seat 210, between the first mounting seat 210 and the second mounting seat 220, and between the second mounting seat 220 and the third mounting seat 230. This improves the moving accuracy of the spindle mounting mechanism 200 in the left-right, front-back, and up-down directions, which can not only improve the machining accuracy but also ensure the reliability of tool change.

[0036] In this embodiment, the projection of the second mounting seat 220 in the front-back direction is in the shape of a Chinese character 'Ri', and the projection of the second mounting seat 220 in the left-right direction is in the shape of a right trapezoid. On the basis of ensuring the overall structural strength and rigidity, this reduces the weight of the second mounting seat 220 and decreases the energy consumption.

[0037] In this embodiment, the height of the chuck 500 is higher than that of the turntable 400, and the central axis of the chuck 500 is located on the side closer to the spindle of the central axis of the turntable 400.

[0038] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A five-axis turning and milling compound machining center, characterized in that: It includes a base, a spindle mounting mechanism, a spindle, a turntable, a chuck and a tool magazine; The spindle mounting mechanism includes a first mounting seat, a second mounting seat, a third mounting seat and a rotation driving device. The first mounting seat is slidably connected to the base and can move left and right. The second mounting seat is slidably connected to the first mounting seat and can move forward and backward. The third mounting seat is slidably connected to the second mounting seat and can move up and down. The rotation driving device is mounted on the third mounting seat, and the spindle is mounted on the rotation driving device and rotates along the B axis under the drive of the rotation driving device; The turntable is mounted on the base, and the central axis of the turntable is the C axis arranged in the vertical direction; The chuck is mounted on the base, the central axis of the chuck is the A axis arranged horizontally, and the chuck is provided with a clamping portion for clamping the product to be processed and driving it to rotate along the A axis; The tool magazine is mounted on one side of the workbench away from the chuck, and the tool magazine is provided with a plurality of tool sleeves, and the accommodating cavity opening of each tool sleeve faces the turntable side.

2. The five-axis turning and milling compound machining center according to claim 1, wherein: The tool magazine is located on the front side of the first mounting seat.

3. The five-axis turning and milling compound machining center according to claim 2, characterized in that: The tool magazine is on the front side of the spindle, and the second mounting seat can move forward to align the tool on the spindle with the corresponding tool sleeve.

4. The five-axis turning and milling compound machining center according to claim 1, characterized in that: The tool magazine is an annular guide rail type tool magazine, and the tool sleeves are arranged on the upper part of the annular guide rail of the tool magazine. Under working conditions, all the tool sleeves are located above the tool magazine.

5. The five-axis turning and milling compound machining center according to claim 1, characterized in that: The clamping portion faces the turntable side.

6. The five-axis turning and milling compound machining center according to claim 1, characterized in that: Grids are provided between the base and the first mounting seat, between the first mounting seat and the second mounting seat, and between the second mounting seat and the third mounting seat.

7. The five-axis turning and milling compound machining center according to claim 1, characterized in that: A threaded sleeve is provided at the bottom of the first mounting seat, and a left and right movement assembly is provided between the base and the first mounting seat; The front and back movement assembly includes two guide rails, a plurality of sliders respectively arranged on the two guide rails, a motor and a lead screw; the two guide rails are both mounted on the base and arranged in the left and right direction, the plurality of sliders are mounted on the bottom of the first mounting seat, the motor is mounted on the base, and the lead screw is connected to the motor and cooperates with the threaded sleeve.

8. The five-axis turning and milling compound machining center according to claim 1, wherein: The projection of the second mounting seat in the front and back direction is in the shape of a Chinese character 'Ri', and the projection of the second mounting seat in the left and right direction is in the shape of a right trapezoid.

9. The five-axis turning and milling compound machining center according to claim 1, wherein: The height of the chuck is higher than that of the turntable, and the central axis of the chuck is located on the side of the central axis of the turntable close to the spindle.

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