Multi-axis numerical control machine tool

Abstract

The application provides a multi-axis numerical control machine tool, and belongs to the technical field of machinery. The multi-axis numerical control machine tool comprises a rack, a multi-station indexing rotary workbench arranged on the rack, a clamp corresponding to each station arranged on the workbench, a mounting seat arranged on the rack and located outside the corresponding station, the number of the clamps is one more than that of the mounting seat to reserve feeding and discharging work, a machining tool driven by a coordinate system linkage mechanism is arranged on the mounting seat, a driving piece for driving the corresponding clamp to rotate is fixedly connected to the workbench, each driving piece has a cable, a wiring mechanism is arranged on the workbench, the wiring mechanism comprises fixed power supply modules corresponding to each station, the wiring mechanism is connected with the cables of the driving pieces and realizes the indexing on-off of the cables of the driving pieces and the power supply modules. The application has the advantages of low manufacturing cost, small size and wide application range.

Description

TECHNICAL FIELD

[0001] The present application belongs to the mechanical technical field, and relates to a machine tool, in particular to a multi-axis numerical control machine tool. BACKGROUND

[0002] The numerical control machine tool is an essential part processing equipment in the whole mechanical industry. In the past, the numerical control machine tool processes workpieces through a single head, and the processing efficiency is not high. Therefore, some machine tool manufacturers have put forward multi-station numerical control machine tools, and some have applied for patents.

[0003] For example, the Chinese patent document discloses a rotary table numerical control multi-station machine tool [application number: 201220673548.9; authorized publication number: CN202963394U], which is provided with a disc rotary table on the rotary table base, and eight workstations are uniformly distributed on the circumference of the disc rotary table in the clockwise direction, which are: feeding and discharging workstations, coarse boring damper hole workstations, fine boring damper hole workstations, tamping plane and drilling M6 bottom hole workstations, milling small taper hole two plane workstations, M6 screw hole workstations, drilling and reaming ABS hole workstations, milling G reference and opposite face workstations. Hydraulic clamps for clamping workpieces for processing are arranged at each workstation on the disc rotary table. A side bed is arranged at the corresponding position of the outer circumference of the disc rotary table and each processing workstation. A numerical control sliding table is arranged on the side bed. A power head is arranged on the numerical control sliding table. A tool is arranged on the main shaft of the power head through a handle. The machine tool further comprises a machine tool control system.

[0004] The Chinese patent document also discloses a multi-station automatic indexing combined numerical control machine tool [application number: 201320110261.X; authorized publication number: CN203197566U], which comprises a machine body, a worktable, a driving motor, a processing head and a work clamp. The worktable is a multi-station indexing rotary worktable installed on the machine body. The indexing rotary worktable is provided with a work clamp corresponding to each work station. The processing head has at least two. The at least two processing heads are arranged around the periphery of the worktable according to the processing sequence of the workpiece, and each processing head is arranged corresponding to a work station.

[0005] The rotary table numerical control multi-station machine tool and the multi-station automatic indexing combined numerical control machine tool can realize one-time clamping, complete the whole process of processing, and have high processing efficiency and processing precision. However, like other multi-station numerical control machine tools, the two are realized by installing clamps on the worktable and arranging power heads (processing heads) on the periphery to realize multi-station processing. However, the cost of the power head (processing head) is high, which makes the manufacturing cost of the whole machine high. The power head (processing head) has a motor and a transmission mechanism, and has a large size. Moreover, the power head is suitable for drilling, reaming, tapping and milling edge processing, and has a small range of application. SUMMARY

[0006] The multi-axis numerical control machine tool has the advantages of low manufacturing cost, small size, wide application range, and the like.

[0007] The multi-axis numerical control machine tool has the advantages of low manufacturing cost, small size, wide application range, and the like.

[0008] In the multi-axis numerical control machine tool, the wiring mechanism includes a column, the column passes through the center of the workbench and is fixedly connected with the frame, the column is fixedly connected with an insulating cylinder in a cylindrical shape and insulated, the power supply module includes an external wire and a plurality of power supply metal blocks connected with the external wire, each group of power supply metal blocks is longitudinally arranged and circumferentially embedded on the outer wall of the insulating cylinder, the workbench is fixedly connected with a connecting rod corresponding to each group of power supply metal blocks, a plurality of positioning clamps are fixedly connected on each connecting rod, the positioning clamps are hingedly connected with metal contact blocks connected with the cables of the corresponding driving members, and an elastic member is arranged between the positioning clamps and the metal contact blocks to provide elastic force to make the metal contact blocks tend to be in contact with the power supply metal blocks and the outer wall of the insulating cylinder.

[0009] In the multi-axis numerical control machine tool, the elastic member is a tension spring located inside the hinged part of the positioning clamp and the metal contact block, one end of the tension spring is fixedly connected with the positioning clamp, and the other end of the tension spring is fixedly connected with the metal contact block.

[0010] In the multi-axis numerical control machine tool, the column is sleeved with a protective cover in a cylindrical shape, the wiring mechanism is covered by the protective cover, the top of the protective cover is covered with a top cover, the top of the protective cover is covered with a bottom cover, each connecting rod passes through the top cover and the bottom cover, and each connecting rod is threadedly connected with a nut supporting the bottom of the bottom cover and a nut pressed on the top of the top cover.

[0011] As another case, in the multi-axis numerical control machine tool, the wiring mechanism comprises a column, the column passes through the center of the workbench and is fixedly connected with the rack, the column is fixedly connected with an annular insulating ring I, the power supply module comprises an external wire and a plurality of power supply metal blocks connected with the external wire, each group of power supply metal blocks is embedded in the bottom surface of the insulating ring I in the circumferential direction, an annular insulating ring II is arranged below the insulating ring II, the insulating ring II is fixedly connected with the workbench through a plurality of connecting rods, the top surface of the insulating ring II is embedded with a metal contact block corresponding to each group of power supply metal blocks and connected with the cable of the corresponding driving part, and the insulating ring II is embedded with a compression spring for providing elastic force to each metal contact block so that each metal contact block is kept in top contact with the power supply metal block on the bottom surface of the insulating ring I.

[0012] In use, each external wire connected with the control box supplies power to the power supply metal block, when the workbench rotates, the workbench drives each connecting rod to rotate, the metal contact block on the insulating ring II is separated from the power supply metal block of the corresponding station, the cable of the corresponding driving part connected with each metal contact block is in a disconnected state, each driving part stops working, after the workbench rotates to the station according to the index value, the metal contact block on the insulating ring II abuts against the power supply metal block of the corresponding station to supply power to each driving part, each driving part works at the required rotating speed of the corresponding station, and the compression spring ensures the stability of the metal contact block.

[0013] In the multi-axis numerical control machine tool, a main shaft box corresponding to each station is arranged on the workbench, a clamp is connected with the main shaft of each main shaft box, and a motor is fixedly connected with each main shaft box.

[0014] In the multi-axis numerical control machine tool, the driving part is an electric spindle, and the electric spindle is connected with the clamp.

[0015] In the multi-axis numerical control machine tool, the coordinate system linkage mechanism comprises a mounting seat having two vertically arranged guide rails I, a large drag plate is arranged on the two guide rails I, the large drag plate has two horizontally arranged guide rails II, a small drag plate is arranged on the two guide rails II, a tool holder for mounting a machining tool is fixedly connected with the small drag plate, the mounting seat is fixedly connected with a driving motor I, an output shaft of the driving motor I is vertically downward and is fixedly connected with a screw rod I, the screw rod I is threadedly connected with a nut I fixedly connected with the large drag plate, the large drag plate is fixedly connected with a driving motor II, an output shaft of the driving motor II horizontally extends and is fixedly connected with a screw rod II, and the screw rod II is threadedly connected with a nut II fixedly connected with the small drag plate.

[0016] As another case, in the above multi-axis numerical control machine tool, the coordinate system linkage mechanism comprises a mounting seat top having two horizontally arranged slide rails one, a slide table arranged on the slide rails one, a first motor fixedly connected to the mounting seat, a first screw rod parallel to the slide rails one fixedly connected to an output shaft of the first motor, a first nut threadedly connected to the slide table, two vertically arranged slide rails two arranged on the slide table, a first drag plate arranged on the slide rails two, a second motor fixedly connected to the slide table, a second screw rod parallel to the slide rails two fixedly connected to an output shaft of the second motor, a second nut threadedly connected to the first drag plate, two horizontally arranged slide rails three arranged on the first drag plate, a second drag plate arranged on the slide rails three, a third motor fixedly connected to the first drag plate, a third screw rod parallel to the slide rails three fixedly connected to an output shaft of the third motor, and a third nut threadedly connected to the second drag plate. Thus, the feeding of the machining tool X, Y and Z coordinate system is realized, the application range is wide, and the machining effect is good.

[0017] Compared with the prior art, the multi-axis numerical control machine tool can meet the setting of different machining speeds of each station, can realize rough machining and finish machining of workpieces, has compact structure, small size, can realize turning, milling, drilling, reaming, tapping, cutting, boring and counterboring machining of workpieces, and has wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural exploded view of the multi-axis numerical control machine tool.

[0019] Figure 2 is a partial structural view of the multi-axis numerical control machine tool.

[0020] Figure 3 is a structural schematic view of a wiring mechanism in the multi-axis numerical control machine tool.

[0021] Figure 4 is a structural top view of the wiring mechanism in the multi-axis numerical control machine tool.

[0022] In the figure, 1 is a rack, 2 is a workbench, 3 is a clamp, 4 is a mounting seat, 5 is a machining tool, 6 is a driving member, 61 is a cable, 7 is a power supply module, 71 is an external wire, 72 is a power supply metal block, 8 is a column, 9 is an insulating cylinder, 10 is a connecting rod, 11 is a positioning clamp, 12 is a metal contact block, 13 is a tension spring, 14 is a protective cover, 15 is a top cover, 16 is a bottom cover, 17 is a spindle box, 18 is a motor, 19 is a guide rail one, 20 is a large drag plate, 21 is a guide rail two, 22 is a small drag plate, 23 is a tool holder, 24 is a driving motor one, and 25 is a driving motor two. DETAILED DESCRIPTION

[0023] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0024] As Figure 1 , Figure 2 , Figure 3 and Figure 4 indicated, the multi-axis numerical control machine tool comprises a rack 1, a multi-station indexing rotary workbench 2 is arranged on the rack 1, a clamp 3 corresponding to each station is arranged on the workbench 2, a mounting seat 4 surrounding the workbench 2 and located outside the corresponding station is arranged on the rack 1, the number of the clamps 3 is one more than that of the mounting seats 4 to reserve loading and unloading work, a machining tool 5 driven by a coordinate system linkage mechanism is arranged on the mounting seat 4, a driving member 6 driving the corresponding clamp 3 to rotate is fixedly connected to the workbench 2, each driving member 6 has a cable 61, and a wiring mechanism is arranged on the workbench 2, the wiring mechanism comprises a power supply module 7 corresponding to each station and fixed, the wiring mechanism is connected with the cable 61 of each driving member 6 and realizes the indexing on-off of the cable 61 of each driving member 6 and each power supply module 7.

[0025] The multi-axis numerical control machine tool sets corresponding machining tools 5 on each mounting seat 4 according to the machining process of a workpiece; in use, first, the clamp 3 at the loading and unloading station is loaded, then the workbench 2 rotates by a station according to the set indexing value, the clamp 3 at the loading and unloading station is brought to the station of the first process, the coordinate system linkage mechanism at the first station drives the machining tool 5 to machine the workpiece, and the clamp 3 at the loading and unloading station is loaded again, after the first process is completed, the workbench 2 rotates again, the workpiece at the loading and unloading station is brought to the station of the first process, the workpiece of the first process is brought to the station of the second process, the coordinate system linkage mechanisms of the first process and the second process respectively complete the machining of the first process and the second process, after machining, the workbench 2 rotates again, and the cycle is repeated, the coordinate system linkage mechanisms corresponding to the first process to the last process respectively realize the simultaneous machining of the first process to the last process, the machining efficiency is high, after the workbench 2 rotates a circle, the machined workpiece is located at the loading and unloading station again, is unloaded, then is loaded again, the workbench 2 rotates again, the cycle is repeated, the workpiece can realize all processes once clamped, the machining precision is high, and the product consistency is good.

[0026] In use, each power supply module 7 is in a power supply state, and in the process of rotating the workbench 2, the wiring mechanism makes the cable 61 of each driving member 6 in a disconnected state, each driving member 6 stops working, and the workbench 2 rotates to the station according to the indexing value, the wiring mechanism makes the cable 61 of each driving member 6 in communication with each power supply module 7, and each driving member 6 drives the corresponding clamp 3 to rotate, so that the indexing of each driving member 6 is realized, the winding of the cable 61 of each driving member 6 is avoided, and each power supply module 7 is connected with the existing control box, the current and voltage of the power supply module 7 are set through the control box, the speed of each driving member 6 is set, so that rough machining and finishing machining of the workpiece are realized; the multi-axis numerical control machine tool does not need to be provided with a power head, the manufacturing cost is reduced, the structure is compact, the volume is small, the driving member 6 drives the clamp 3 to rotate, the coordinate system linkage mechanism drives the machining tool 5, and the machining of turning, milling, drilling, reaming, tapping, cutting, boring and counterboring of the workpiece is realized, and the application range is wide.

[0027] Further, the wiring mechanism in the embodiment includes a column 8 penetrating through the center of the workbench 2 and fixedly connected with the rack 1, the column 8 is fixedly connected with an insulating cylinder 9 in a cylindrical shape and insulation, the power supply module 7 includes an external wire 71 and a plurality of power supply metal blocks 72 connected with the external wire 71, each group of power supply metal blocks 72 is longitudinally arranged and embedded in the outer wall of the insulating cylinder 9 in a circumferential direction, the workbench 2 is fixedly connected with a connecting rod 10 corresponding to each group of power supply metal blocks 72, a plurality of positioning clamps 11 are fixedly connected on each connecting rod 10, the positioning clamp 11 is hingedly connected with a metal contact block 12 connected with the cable 61 of the corresponding driving member 6, and an elastic member is arranged between the positioning clamp 11 and the metal contact block 12 to provide an elastic force to make the metal contact block 12 keep in contact with the power supply metal block 72 and the outer wall of the insulating cylinder 9.

[0028] In use, each external wire 71 connected with the control box supplies power to the power supply metal block 72, when the workbench 2 rotates, the workbench 2 drives each connecting rod 10 to rotate, the metal contact block 12 on each connecting rod 10 is separated from the power supply metal block 72 of the corresponding station, the cable 61 of the corresponding driving member 6 connected with each metal contact block 12 is in a disconnected state, each driving member 6 stops working, after the workbench 2 rotates to the station according to the indexing value, the metal contact block 12 on each connecting rod 10 abuts against the power supply metal block 72 of the corresponding station to supply power to each driving member 6, each driving member 6 works at the required speed of the corresponding station, and the elastic member ensures the stability of the metal contact block 12.

[0029] The elastic member is a tension spring 13 located at the inner side of the hinge between the positioning clamp 11 and the metal contact block 12, one end of the tension spring 13 is fixedly connected with the positioning clamp 11, and the other end of the tension spring 13 is fixedly connected with the metal contact block 12. The tension spring 13 provides elastic force to make the metal contact block 12 keep in contact with the power supply metal block 72 and the outer wall of the insulating cylinder 9. Of course, in actual manufacture, the elastic member can be a spring piece located at the outer side of the hinge between the positioning clamp 11 and the metal contact block 12, one end of the spring piece is fixedly connected with the positioning clamp 11 through a screw, and the other end of the spring piece is fixedly connected with the metal contact block 12 through a screw, and the spring piece provides elastic force to make the metal contact block 12 keep in contact with the power supply metal block 72 and the outer wall of the insulating cylinder 9.

[0030] The stand 8 is sleeved with a protective cover 14 in a cylindrical shape, the protective cover 14 covers the wiring mechanism, the top of the protective cover 14 is covered with a top cover 15, the top of the protective cover 14 is covered with a bottom cover 16, each connecting rod 10 passes through the top cover 15 and the bottom cover 16, and each connecting rod 10 is threadedly connected with a nut supporting the bottom of the bottom cover 16 and a nut pressed on the top of the top cover 15. In this way, the protective effect of the wiring mechanism is good, the wiring mechanism is prevented from being damaged, and the service life is prolonged.

[0031] The workbench 2 is provided with a main shaft box 17 corresponding to each work station, the main shaft of each main shaft box 17 is connected with the clamp 3, the driving member 6 is an electric motor 18 fixedly connected on each main shaft box 17, and the output end of the electric motor 18 is connected with the main shaft through a gear reduction box or belt transmission or chain transmission. The rotation speed of the clamp 3 is adjusted by controlling the rotation speed of the electric motor 18, the output end of the electric motor 18 drives the main shaft and the clamp 3 to rotate, and in the embodiment, the output end of the electric motor 18 is connected with the main shaft through belt transmission.

[0032] Of course, in actual manufacture, the driving member 6 can be an electric spindle, and the electric spindle is connected with the clamp 3. In this way, the structure is compact, the volume is small, and the installation and arrangement are convenient.

[0033] The linkage mechanism of the coordinate system in the embodiment comprises the mounting base 4 provided with two vertically arranged guide rails I 19, the large slide plate 20 arranged on the two guide rails I 19, the small slide plate 22 arranged on the two horizontally arranged guide rails II 21 of the large slide plate 20, the tool rest 23 for mounting the machining tool 5 fixedly connected to the small slide plate 22, the driving motor I 24 fixedly connected to the mounting base 4, the output shaft of the driving motor I 24 vertically downwardly and fixedly connected with the screw rod I, the screw nut I threadedly connected with the screw rod I and fixedly connected to the large slide plate 20, the driving motor II 25 fixedly connected to the large slide plate 20, the output shaft of the driving motor II 25 horizontally extended and fixedly connected with the screw rod II, and the screw nut II threadedly connected with the screw rod II and fixedly connected to the small slide plate 22. The driving motor I 24 drives the screw rod I to rotate, the screw rod I drives the screw nut I and the large slide plate 20 to vertically ascend and descend along the guide rails I 19, the driving motor II 25 drives the screw rod II to rotate, the screw rod II drives the screw nut II and the small slide plate 22 to horizontally displace along the guide rails II 21, so that the machining tool 5 is fed in the vertical and horizontal directions, the machining is convenient, the precision is high, and the applicability is good.

[0034] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art. The specific embodiments described in the specification are only illustrative of the spirit of the application. The person skilled in the art to which the application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the application or exceed the scope defined by the appended claims.

Claims

1. A multi-axis numerical control machine tool comprising a frame (1) provided with a multi-station indexing rotary table (2), the rotary table (2) being provided with a fixture (3) corresponding to each station, characterized in that, The rack (1) is provided with mounting seats (4) around the workbench (2) and outside the corresponding stations, the number of clamps (3) is one more than the mounting seats (4) to reserve the feeding and discharging work, the mounting seats (4) are provided with machining tools (5) driven by the coordinate system linkage mechanism, the workbench (2) is fixedly connected with driving members (6) for driving the corresponding clamps (3) to rotate, each driving member (6) has a cable (61), the workbench (2) is provided with a wiring mechanism, the wiring mechanism includes fixed power supply modules (7) corresponding to each station, the wiring mechanism is connected with the cable (61) of each driving member (6) and realizes the indexing on-off of the cable (61) of each driving member (6) and each power supply module (7), the workbench (2) is provided with a main shaft box (17) corresponding to each station, the main shaft of each main shaft box (17) is connected with a clamp (3), the driving member (6) is fixedly connected with a motor (18) on each main shaft box (17), the output end of the motor (18) is connected with the main shaft through a gear reduction box or a belt drive or a chain drive; the driving member (6) is an electric spindle, the electric spindle is connected with the clamp (3); the wiring mechanism includes a stand (8), the stand (8) passes through the center of the workbench (2) and is fixedly connected with the rack (1), the stand (8) is fixedly connected with an insulating cylinder (9) which is cylindrical and insulating, the power supply module (7) includes an external wire (71) and a plurality of power supply metal blocks (72) connected with the external wire (71), each group of power supply metal blocks (72) is longitudinally arranged and circumferentially embedded on the outer wall of the insulating cylinder (9), the workbench (2) is fixedly connected with a connecting rod (10) corresponding to each group of power supply metal blocks (72), a plurality of positioning clamps (11) are fixedly connected on each connecting rod (10), the positioning clamp (11) is hinged with a metal contact block (12) connected with the cable (61) of the corresponding driving member (6), an elastic member is arranged between the positioning clamp (11) and the metal contact block (12) to provide an elastic force to make the metal contact block (12) keep in contact with the power supply metal block (72) and the outer wall of the insulating cylinder (9); or the wiring mechanism includes a stand (8), the stand (8) passes through the center of the workbench (2) and is fixedly connected with the rack (1), the stand (8) is fixedly connected with an annular insulating ring one, the power supply module (7) includes an external wire (71) and a plurality of power supply metal blocks (72) connected with the external wire (71), each group of power supply metal blocks (72) is circumferentially embedded on the bottom surface of the insulating ring one, an annular insulating ring two is arranged below the insulating ring one, the insulating ring two is fixedly connected with the workbench (2) through a plurality of connecting rods (10), the top surface of the insulating ring two is embedded with a metal contact block (12) corresponding to each group of power supply metal blocks (72) and connected with the cable (61) of the corresponding driving member (6), the insulating ring two is embedded with a compression spring for each metal contact block (12) to provide an elastic force to make each metal contact block (12) keep in contact with the bottom surface of the insulating ring one and the power supply metal block (72).

2. The multi-axis CNC machine tool according to claim 1, characterized in that, The elastic member is a tension spring (13) located at the hinge between the positioning clamp (11) and the metal contact block (12), one end of the tension spring (13) is fixedly connected with the positioning clamp (11), and the other end of the tension spring (13) is fixedly connected with the metal contact block (12).

3. The multi-axis CNC machine tool according to claim 2, characterized in that, The column (8) is sleeved with a cylindrical protective cover (14), the protective cover (14) covers the wiring mechanism, the top of the protective cover (14) is covered with a top cover (15), the bottom of the protective cover (14) is covered with a bottom cover (16), each connecting rod (10) passes through the top cover (15) and the bottom cover (16) and is provided, and each connecting rod (10) is threadedly connected with a nut supporting the bottom of the bottom cover (16) and a nut pressed on the top of the top cover (15).

4. The multi-axis CNC machine tool according to claim 1 or 2 or 3, characterized in that, The coordinate system linkage mechanism comprises two vertically arranged guide rails one (19) provided on the mounting seat (4), a large slide plate (20) provided on the two guide rails one (19), the large slide plate (20) having two horizontally arranged guide rails two (21), a small slide plate (22) provided on the two guide rails two (21), a tool rest (23) for mounting a machining tool (5) fixedly connected to the small slide plate (22), the mounting seat (4) being fixedly connected with a driving motor one (24), the output shaft of the driving motor one (24) being vertically downward and fixedly connected with a screw rod one, the screw rod one being threadedly connected with a nut one fixedly connected with the large slide plate (20), the large slide plate (20) being fixedly connected with a driving motor two (25), the output shaft of the driving motor two (25) being horizontally extended and fixedly connected with a screw rod two, and the screw rod two being threadedly connected with a nut two fixedly connected with the small slide plate (22).

5. The multi-axis CNC machine tool according to claim 1 or 2 or 3, characterized in that, The coordinate system linkage mechanism comprises two horizontally arranged slide rails one provided on the top of the mounting seat (4), a slide table provided on the slide rails one, the mounting seat (4) being fixedly connected with a first motor, the output shaft of the first motor being fixedly connected with a first screw rod parallel to the slide rails one, the first screw rod being threadedly connected with a first nut fixedly connected with the slide table, two vertically arranged slide rails two being provided on the slide table, a first slide plate being provided on the slide rails two, the slide table being fixedly connected with a second motor, the output shaft of the second motor being fixedly connected with a second screw rod parallel to the slide rails two, the second screw rod being threadedly connected with a second nut fixedly connected with the first slide plate, two horizontally arranged slide rails three being provided on the first slide plate, a second slide plate being provided on the slide rails three, the first slide plate being fixedly connected with a third motor, the output shaft of the third motor being fixedly connected with a third screw rod parallel to the slide rails three, the third screw rod being threadedly connected with a third nut fixedly connected with the second slide plate, and the second slide plate being fixedly connected with the tool rest (23) for mounting the machining tool (5).

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