A CNC machine tool with an axis auxiliary positioning structure

Abstract

The present application relates to the field of numerically controlled machine tools, and specifically discloses a numerically controlled machine tool with an axis auxiliary positioning structure. The present application connects a movably adjustable circular seat with a first frame, controls a locking assembly by a pushing assembly to achieve locking and unlocking of the circular seat, cooperates with an auxiliary adjustment assembly arranged on the outside, sets the center position of the second frame coaxially with the rotating shaft, and with the help of the synchronous relative movement of two first push plates and two second push plates in the second frame, and the lateral movement adjustment of the auxiliary adjustment assembly, the position to be processed of the clamped workpiece on the clamping assembly can be flexibly positioned and guided, so that the axis of the position to be processed of the workpiece is at the center position of the second frame and is coaxially arranged with the rotating shaft, so that when the device performs rotational processing on multiple sections of different axis positions of a cylindrical workpiece, the axis positioning is accurate and fast, which is beneficial to improving the convenience and efficiency of numerical control processing, and is beneficial to improving the processing accuracy to a certain extent.

Description

Technical Field

[0001] The present application relates to the field of numerically controlled machine tools, and in particular to a numerically controlled machine tool with an axis auxiliary positioning structure. Background Art

[0002] A CNC machine tool is a machine tool equipment equipped with a program control system and used for automated processing of workpieces. During operation, it usually applies radial rotation to the workpiece and cooperates with the axial movement and longitudinal advancement of the turning tool to achieve automated processing of the workpiece. It is a widely used mechanical processing equipment.

[0003] In the use of CNC machine tools with current technology, after the workpiece is mounted on the clamping table, the position of the workpiece is usually inconvenient to readjust. During the workpiece processing, if the position to be processed of the workpiece changes, and the axis of the changed processing position is not coaxial with the axis of the previously processed position, it is difficult to perform accurate and stable rotational cutting on it. The staff is often required to disassemble the workpiece again and then re-fix it according to the axis of the position to be processed. The operation is cumbersome, and the axis alignment is easily misaligned during the reciprocating disassembly process, which not only affects the processing stability, but also affects the operating efficiency.

[0004] Therefore, a CNC machine tool with an axis auxiliary positioning structure is proposed to solve some problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present application is to adjust the position of the workpiece after auxiliary positioning after the subsequent processing position changes, so that the adjusted position to be processed is coaxial with the clamping table. After the position to be processed of the workpiece changes, there is no need to reciprocate and disassemble the workpiece, which is beneficial to ensuring the processing accuracy and processing efficiency. Compared with the prior art, a CNC machine tool with an axis auxiliary positioning structure is provided, including a CNC machine tool body, an axle seat assembly is installed on the CNC machine tool body, and the axle seat assembly includes a fixed table fixedly connected to the CNC machine tool body, a circular plate is rotatably installed on the fixed table, and a first square frame is fixedly installed at the center position of the circular plate, a rotating shaft is fixedly installed at the center position of the first frame, a clamping assembly is installed on the first frame, and the clamping assembly includes a circular seat movably installed on the side of the first frame away from the rotating shaft. A plurality of clamping columns are slidably installed on the circular seat, a translation assembly is arranged between the first square frame and the circular seat, a locking assembly for locking the circular seat is installed in the first frame, a pushing assembly for controlling the movement of the locking assembly is installed in the fixed platform, a slide rail arranged transversely on the upper and lower sides of the shaft seat assembly is fixed in the CNC machine tool body, and a slide seat is slidably installed in the slide rail, an auxiliary adjustment assembly is installed between the upper and lower slide seats, the auxiliary adjustment assembly includes a second square frame movably mounted on the outside of the fixed platform, and the second frame is fixedly connected between the upper and lower slide seats, the center position of the second frame is coaxially arranged with the rotating shaft, a first push plate that slides symmetrically up and down is installed in the second frame, a second push plate that slides symmetrically front and back is installed in the second frame, and the first push plate and the second push plate are staggered left and right.

[0006] Furthermore, a flexible protective cover is fixed around the first square frame and the circular seat, and the flexible protective cover has multiple folds.

[0007] Furthermore, a plurality of first screws located on the radius of the circular seat are arranged around the circular seat, and the first screws are rotatably installed in the circular seat, the outer thread of the first screw is sleeved with a sliding seat that slides in contact with the inner end wall of the circular seat, the clamping column is fixedly connected to the corresponding sliding seat, and a servo motor for driving the plurality of first screws to rotate synchronously is fixedly installed on one side of the circular seat close to the first square frame.

[0008] Furthermore, two clamping columns arranged side by side are fixedly installed on each sliding seat, a first bevel gear is coaxially fixed to one end of the first screw rod close to the servo motor, and a second bevel gear meshing with the plurality of first bevel gears is coaxially fixed to the driving shaft of the servo motor.

[0009] Furthermore, the translation assembly includes a first bracket arranged in the first square frame and symmetrically fixed on the end wall of the circular seat front and back, a first straight rod vertically fixed on the inner end wall of the first frame is slidably inserted in the first bracket, a movable sleeve on the first straight rod is provided with a first spring elastically supported between the two sides of the first bracket and the inner end wall of the first frame, a second bracket symmetrically fixed on the end wall of the circular seat up and down is arranged in the first frame, and a second straight rod longitudinally fixed on the inner end wall of the first frame is slidably inserted in the second bracket, the second straight rod is staggered left and right with the first straight rod, and a movable sleeve on the second straight rod is provided with a second spring elastically supported between the two sides of the second bracket and the inner end wall of the first frame.

[0010] Furthermore, the locking assembly includes a truncated table correspondingly arranged on the left side of the second bracket, and the truncated table is installed in the first frame for transverse sliding. There are multiple evenly distributed sliding columns sliding transversely in the truncated table, and a third spring for elastically supporting the sliding column is fixedly installed in the truncated table. A fixed column is fixedly installed on the end wall of the second bracket close to the sliding column.

[0011] Furthermore, the pushing assembly includes a sliding sleeve fixedly installed on the left side of the truncated table, and a circular ring coaxially arranged with the rotating shaft is slidably connected in the sliding sleeve, an electric push rod parallel to the truncated table is fixedly installed in the fixed table, and the telescopic end of the electric push rod is fixedly connected to the circular ring.

[0012] Furthermore, there are two locking assemblies, which are respectively arranged corresponding to the two second brackets, and there are two electric push rods, which are symmetrically arranged on both sides of the rotating shaft.

[0013] Furthermore, the auxiliary adjustment component also includes a first bidirectional screw rod vertically rotatably installed on the front and rear sides of the second frame, two first push plates symmetrically threadedly sleeved on the upper and lower ends of the two first bidirectional screw rods, and longitudinally arranged second bidirectional screw rods symmetrically rotatably installed on the upper and lower sides of the second frame, the first bidirectional screw and the second bidirectional screw are staggered left and right, and the two second push plates symmetrically threadedly sleeved on the front and rear ends of the two second bidirectional screws, and a linkage component is connected between the two first bidirectional screws and the two second bidirectional screws.

[0014] Furthermore, the linkage assembly includes a first transmission assembly that is transmission-connected between the ends of two first bidirectional screws, a second transmission assembly that is transmission-connected between the ends of two second bidirectional screws, a first gear is coaxially fixed at the end of one of the first bidirectional screws, a second gear that meshes with the first gear is rotatably mounted on the second frame, and a third bevel gear is coaxially fixed on the second gear, a fourth bevel gear that meshes with the third bevel gear is coaxially fixed at the end of one of the second bidirectional screws, and the fourth bevel gear is externally connected to a drive unit.

[0015] Compared with the prior art, the advantages of this application are:

[0016] (1) The present application connects a movably adjustable circular seat with the first frame, controls the locking assembly by a pushing assembly to lock and unlock the circular seat, cooperates with an auxiliary adjustment assembly arranged on the outside, sets the center position of the second frame coaxially with the rotating shaft, and with the help of the synchronous relative movement of the two first push plates and the two second push plates in the second frame, as well as the lateral movement and adjustment of the auxiliary adjustment assembly, can flexibly position and guide the to-be-processed position of the workpiece clamped on the clamping assembly, so that the axis of the to-be-processed position of the workpiece is at the center position of the second frame and is coaxially arranged with the rotating shaft, so that when the device performs rotational processing on multiple sections of a cylindrical workpiece at different axis positions, the axis positioning is accurate and fast, which is beneficial to improving the convenience and efficiency of CNC processing, and is beneficial to improving the processing accuracy to a certain extent.

[0017] (2) A first bevel gear is coaxially fixed on one end of each first screw rod near the center of the circular seat, and a second bevel gear meshing with the plurality of first bevel gears is arranged at the center of the circular seat. This allows the synchronous rotation of the plurality of first screw rods arranged in a surrounding manner to be achieved through the drive of a single servo motor, which is beneficial to ensuring the consistent stability of the synchronous movement of the clamping columns driven by the plurality of sliding seats. At the same time, by installing two clamping columns on each sliding seat, it is beneficial to improve the point of force of the clamping column when clamping the workpiece in a single direction, thereby improving the stability of the workpiece when being clamped by the clamping assembly to a certain extent.

[0018] (3) The first bracket is movably mounted on the first straight rod fixed in the first frame, and the second bracket is movably mounted on the second straight rod fixed in the first frame, and the first straight rod and the second straight rod are vertically arranged, and the elastic support of the first spring and the second spring is combined, so that the circular seat and the first frame are in a relatively stable connection state, and the circular seat can be flexibly pushed and adjusted when the locking assembly is unlocked, thereby improving the stability of the structure during operation to a certain extent.

[0019] (4) The circular table in the locking assembly is controlled to move left and right by pushing the assembly, so that after the circular table moves to the right, it can drive a plurality of sliding columns to wrap the fixed column fixed on the second bracket, thereby limiting the movement of the fixed column and realizing locking of the circular seat position state. The circular seat locking state is controlled by moving the telescopic end of the electric push rod, which effectively improves the convenience of locking and unlocking the circular seat. The circular seat is locked by wrapping the fixed column with a plurality of sliding columns. The structure is simple and stable, which is conducive to ensuring the firmness of the circular seat when it is locked after the position is adjusted.

[0020] (5) The truncated table is rotatably connected to the circular ring by a sliding sleeve, so that the left and right push of the truncated table by the electric push rod will not be affected by the rotation of the first frame, which is conducive to ensuring the movement of the telescopic end of the electric push rod, pushing the truncated table to move left and right, and controlling the structural stability when the circular seat is locked.

[0021] (6) By arranging the two locking components on the left sides of the two symmetrically arranged second brackets, the number of fixed columns that are limited when the circular seat is in the locked state can be effectively increased, which is beneficial to further improve the structural stability of the circular seat after it is locked. At the same time, by arranging two electric push rods to push the truncated table, it is beneficial to improve the stability of the circular ring pushing the two truncated tables to move to the right.

[0022] (7) The two first push plates are symmetrically threadedly sleeved on the upper and lower ends of the two first bidirectional screws, and the two second push plates are symmetrically threadedly sleeved on the front and rear ends of the two second bidirectional screws, and the transmission connection of the first transmission assembly and the second transmission assembly in the linkage assembly, as well as the meshing transmission of the first gear and the second gear, the third bevel gear and the fourth bevel gear, are coordinated, so that the two first push plates and the two second push plates can be synchronously moved and adjusted toward the center position of the second frame without setting up multiple drive units, and the coordinated consistency of the movement and adjustment of the two first push plates and the two second push plates can be effectively guaranteed, thereby adjusting the accuracy of the device for auxiliary positioning of the axis of the cylindrical workpiece to be processed to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of the clamping assembly and the auxiliary adjustment assembly of this application;

[0024] Figure 2 A perspective view of the present application;

[0025] Figure 3 For this application Figure 1 Right view of the middle structure;

[0026] Figure 4 For this application Figure 3 Cross-sectional view of the structure at AA in the middle;

[0027] Figure 5 For this application Figure 3 Cross-sectional view of the structure at the middle BB;

[0028] Figure 6 For this application Figure 3 Cross-sectional view of the structure at CC;

[0029] Figure 7 For this application Figure 1 Front view of the middle structure;

[0030] Figure 8 For this application Figure 7Cross-sectional view of the structure at DD in the middle;

[0031] Fig. 9 A schematic diagram of the internal structure of the first frame of the present application;

[0032] Fig.10 This is a three-dimensional diagram of the internal structure of the circular seat of this application;

[0033] Fig.11 This is a three-dimensional diagram of coaxial and non-coaxial cylindrical workpieces of the present application.

[0034] Description of the numbers in the figure:

[0035] 1. CNC machine tool body;

[0036] 2. Shaft seat assembly; 201. fixed platform; 202. circular plate; 203. first square frame; 204. rotating shaft; 205. flexible protective cover;

[0037] 3. Clamping assembly; 301. Circular seat; 302. Clamping column; 303. First screw; 304. Sliding seat; 305. Servo motor; 306. First bevel gear; 307. Second bevel gear;

[0038] 401, first bracket; 402, first straight rod; 403, first spring; 404, second bracket; 405, second straight rod; 406, second spring;

[0039] 501, round table; 502, sliding column; 503, third spring; 504, fixed column;

[0040] 601, sliding sleeve; 602, ring; 603, electric push rod;

[0041] 7. Slide rail; 701. Slide seat;

[0042] 8. Auxiliary adjustment assembly; 801. Second square frame; 802. First push plate; 803. First bidirectional screw; 804. Second push plate; 805. Second bidirectional screw;

[0043] 9. Linkage assembly; 901. First transmission assembly; 902. Second transmission assembly; 903. First gear; 904. Second gear; 905. Third bevel gear; 906. Fourth bevel gear. DETAILED DESCRIPTION

[0044] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present application.

[0045] Embodiment 1:

[0046] The present invention provides a CNC machine tool with an axis auxiliary positioning structure, see Figure 1 - Fig.11 , including a CNC machine tool body 1, an axle seat assembly 2 is installed on the CNC machine tool body 1, and the axle seat assembly 2 includes a fixed table 201 fixedly connected to the CNC machine tool body 1, a circular plate 202 is rotatably installed on the fixed table 201, and a first square frame 203 is fixedly installed at the center position of the circular plate 202, a rotating shaft 204 is fixedly installed at the center position of the first frame 203, a clamping assembly 3 is installed on the first frame 203, and the clamping assembly 3 includes a circular seat 301 movably installed on the side of the first frame 203 away from the rotating shaft 204, a plurality of clamping columns 302 are slidably installed on the circular seat 301, a translation assembly is arranged between the first frame 203 and the circular seat 301, and a locking assembly for locking the circular seat 301 is installed in the first frame 203, A pushing assembly for controlling the movement of the locking assembly is installed in the fixed table 201, a slide rail 7 is fixed in the CNC machine tool body 1 and is laterally arranged on the upper and lower sides of the shaft seat assembly 2, and a slide seat 701 is slidably installed in the slide rail 7, and an auxiliary adjustment assembly 8 is installed between the upper and lower slide seats 701, and the auxiliary adjustment assembly 8 includes a second square frame 801 movably sleeved on the outside of the fixed table 201, and the second square frame 801 is fixedly connected between the upper and lower slide seats 701, the center position of the second square frame 801 is coaxially arranged with the rotating shaft 204, a first push plate 802 that slides symmetrically up and down is installed in the second frame 801, and a second push plate 804 that slides symmetrically front and back is installed in the second frame 801, and the first push plate 802 and the second push plate 804 are staggered left and right.

[0047] During the use of the CNC machine tool, the staff connects the device to an external power supply so that the external power supply provides power support for the device. Subsequently, the staff can control the device to be powered on and started. In the initial state, the circular seat 301 is locked by controlling the locking assembly through the pushing assembly. In this state, the circular seat 301 cannot move relative to the first frame 203, and the center position of the circular seat 301 is coaxial with the rotating shaft 204. The staff places the workpiece to be CNC machined on the right side of the circular seat 301 so that it is located in the middle position of many clamping columns 302. The workpiece is clamped in the center position of the circular seat 301 by moving the clamping columns 302. The rotating shaft 204 is connected to the driving unit in the CNC machine tool body 1 by transmission. By supplying rotational power to the rotating shaft 204, the workpiece fixed on the clamping assembly 3 rotates, and during the rotation process, CNC machining is performed by the milling cutter installed in the CNC machine tool body 1.

[0048] This working mode is mostly used for the processing of standard cylindrical workpieces. When the cylindrical workpiece presents a multi-section structure during processing, and the position to be processed is not coaxial with the clamping position of the clamped component 3, adjustment can be made. At this time, the staff drives the auxiliary adjustment component 8 to slide along the slide rail 7 to the outside of the position to be processed of the workpiece, and at the same time releases the locking component of the circular seat 301 through the pushing component. Then, the first push plate 802 symmetrically arranged up and down and the second push plate 804 symmetrically arranged front and back in the second frame 801 move synchronously relative to each other. The position to be processed of the cylindrical workpiece is guided by the clamping after the two first push plates 802 and the two second push plates 804 move, so that the axis of the position to be processed of the cylindrical workpiece is adjusted to the center position of the second frame 801. Since the center position of the second frame 801 is coaxial with the rotating shaft 204, then, the staff controls the locking component to readjust the adjusted position by pushing the component. The circular seat 301 is locked so that the position to be processed on the cylindrical workpiece can be stably maintained in a state of being coaxially set with the rotating shaft 204. After the axial center positioning of the position to be processed of the cylindrical workpiece is adjusted, the staff drives the two first push plates 802 and the two second push plates 804 in reverse to reset to the initial state, releases the clamping of the workpiece to be processed, and slides to the left to drive the auxiliary adjustment component 8 to reset to the initial state to avoid interference during workpiece processing. Subsequently, the staff drives the rotating shaft 204 to drive the first frame 203 to rotate, and then drives the workpiece clamped on the clamping component 3 for rotation processing. Since the position to be processed of the workpiece is coaxially set with the rotating shaft 204 after being guided by the auxiliary adjustment component 8, even if the position to be processed of the workpiece and its clamped end are not coaxial, the stability of the coaxial rotation of the position to be processed and the rotating shaft 204 during the rotation processing can be guaranteed, which is conducive to improving the convenience of processing.

[0049] The present application connects the movably adjustable circular seat 301 with the first frame 203, controls the locking assembly by pushing the assembly to lock and unlock the circular seat 301, cooperates with the auxiliary adjustment assembly 8 arranged on the outside, and sets the center position of the second frame 801 to be coaxial with the rotating shaft 204. With the help of the synchronous relative movement of the two first push plates 802 and the two second push plates 804 in the second frame 801, and the lateral movement adjustment of the auxiliary adjustment assembly 8, the processing position of the clamped workpiece on the clamping assembly 3 can be flexibly positioned and guided, so that the axis center of the workpiece to be processed is at the center position of the second frame 801 and is coaxial with the rotating shaft 204, so that when the device performs rotation processing on multiple sections of different axis positions of the cylindrical workpiece, the axis center positioning is accurate and fast, which is beneficial to improving the convenience and efficiency of CNC processing, and is beneficial to improving the processing accuracy to a certain extent.

[0050] See also Figure 1 , Figure 4 and Figure 5A flexible protective cover 205 is fixed around the first frame 203 and the circular seat 301, and the flexible protective cover 205 has multiple folds. During the use of the CNC machine tool, the flexible protective cover 205 with multiple folds is connected around the first frame 203 and the circular seat 301. This can block the gap between the first frame 203 and the circular seat 301 due to the movable adjustment of the circular seat 301, and prevent debris generated during the processing from splashing into the first frame 203, which is beneficial to ensuring the stability of the circular seat 301 relative to the first frame 203. At the same time, the multiple folds on the flexible protective cover 205 can effectively improve the deformation performance of the flexible protective cover 205 itself. During the movable adjustment of the circular seat 301, the flexible protective cover 205 is not easily subjected to excessive pulling force, which effectively reduces the probability of rupture and damage of the flexible protective cover 205, and is beneficial to extending the service life of the flexible protective cover 205.

[0051] See also Figure 4 , Figure 5 and Fig.10 A plurality of first screws 303 located on the radius of the circular seat 301 are arranged around the circular seat 301, and the first screws 303 are rotatably installed in the circular seat 301, and the outer side of the first screw 303 is threadedly sleeved with a sliding seat 304 that slides and fits with the inner end wall of the circular seat 301, and the clamping column 302 is fixedly connected to the corresponding sliding seat 304, and a servo motor 305 for driving the plurality of first screws 303 to rotate synchronously is fixedly installed on one side of the circular seat 301 close to the first square frame 203, and two clamping columns 302 arranged side by side are fixedly installed on each sliding seat 304, and a first bevel gear 306 is coaxially fixed to one end of the first screw 303 close to the servo motor 305, and a second bevel gear 307 that meshes with the plurality of first bevel gears 306 is coaxially fixed on the driving shaft of the servo motor 305.

[0052] During the use of the CNC machine tool, when the workpiece is clamped by the clamping assembly 3, the staff puts one end of the workpiece to be processed on the right side of the circular seat 301 and places it in the middle of the plurality of clamping columns 302, and then controls the servo motor 305 to be powered on and started. During the startup of the servo motor 305, the second bevel gear 307 coaxially fixed with its drive shaft is driven to rotate. With the meshing of the second bevel gear 307 and the plurality of first bevel gears 306, the single servo motor 305 simultaneously provides rotational power for the plurality of first screws 303 arranged around it. During the rotation of the first screw 303, In the embodiment, with the help of the threaded connection between the first screw rod 303 and the sliding seat 304, the sliding seat 304 can carry the clamping column 302 to move along the first screw rod 303. The moving direction of the sliding seat 304 is controlled by controlling the rotation direction of the driving shaft of the servo motor 305. When the clamping assembly 3 clamps the workpiece, the sliding seat 304 drives the clamping column 302 to move along the first screw rod 303 toward the center of the circular seat 301. When the clamping assembly 3 releases the clamping of the workpiece, the sliding seat 304 drives the clamping column 302 to move along the first screw rod 303 away from the center of the circular seat 301.

[0053] During the use of the device, at least three first screws 303 are arranged around the circular seat 301. By moving the numerous clamping columns 302 toward the center of the circular seat 301 in multiple directions, the clamped end of the cylindrical workpiece can be stably and accurately clamped at the center of the circular seat 301. In the present application, a first bevel gear 306 is coaxially fixed at one end of each first screw 303 close to the center of the circular seat 301, and a second bevel gear 307 that meshes with the numerous first bevel gears 306 is arranged at the center of the circular seat 301, so that the synchronous rotation of the numerous first screws 303 arranged around can be achieved only by the drive of a single servo motor 305, which is beneficial to ensuring the consistent stability of the synchronous movement of the clamping columns 302 driven by the numerous sliding seats 304. At the same time, by installing two clamping columns 302 on each sliding seat 304, it is beneficial to improve the force point of the clamping column 302 when clamping the workpiece in a single direction, and to a certain extent improve the stability of the workpiece when being clamped by the clamping assembly 3.

[0054] See also Fig. 9The translation assembly includes a first bracket 401 which is arranged in the first frame 203 and is symmetrically fixed on the end wall of the circular seat 301 front and back. A first straight rod 402 which is vertically fixed on the inner end wall of the first frame 203 is slidably inserted in the first bracket 401. A first spring 403 which is elastically supported between the two sides of the first bracket 401 and the inner end wall of the first frame 203 is movably sleeved on the first straight rod 402. A second bracket 404 which is symmetrically fixed on the end wall of the circular seat 301 up and down is arranged in the first frame 203. A second straight rod 405 which is longitudinally fixed on the inner end wall of the first frame 203 is slidably inserted in the second bracket 404. The second straight rod 405 is staggered with the first straight rod 402 left and right. A second spring 406 which is elastically supported between the two sides of the second bracket 404 and the inner end wall of the first frame 203 is movably sleeved on the second straight rod 405.

[0055] During the use of the CNC machine tool, when the position of the cylindrical workpiece to be processed is positioned and adjusted, the adjustment and positioning operation is performed through the synchronous relative movement of the two first push plates 802 and the two second push plates 804 in the second frame 801. During this process, the first push plate 802 and the second push plate 804 will push the workpiece during their movement. Since the workpiece is firmly clamped between the numerous clamping columns 302, the workpiece is firmly connected to the circular seat 301 after being clamped. During the adjustment process of the first push plate 802 and the second push plate 804 pushing the workpiece, the circular seat 301 will be driven to synchronously adjust relative to the first frame 203. By movably sleeved the first bracket 401 on the first straight rod 402 fixed in the first frame 203, and movably sleeved the second bracket 404 on the second straight rod 405 fixed in the first frame 203, and making the first straight rod 402 and the second straight rod 405 vertically arranged, with the elastic support of the first spring 403 and the second spring 406, the circular seat 301 and the first frame 203 are in a relatively stable connection state, and the circular seat 301 can be flexibly pushed and adjusted when the locking assembly is unlocked, which improves the stability of the structure during operation to a certain extent.

[0056] See also Figure 4 , Figure 5 and Figure 8The locking assembly includes a truncated table 501 correspondingly arranged on the left side of the second bracket 404, and the truncated table 501 is installed in the first frame 203 for transverse sliding. A plurality of evenly distributed sliding columns 502 are arranged in the truncated table 501 for transverse sliding. A third spring 503 for elastically supporting the sliding column 502 is fixedly installed in the truncated table 501. A fixed column 504 is fixedly installed on the end wall of the second bracket 404 on the side close to the sliding column 502. The pushing assembly includes a sliding sleeve 601 fixedly installed on the left side of the truncated table 501, and a circular ring 602 coaxially arranged with the rotating shaft 204 is slidably connected in the sliding sleeve 601. An electric push rod 603 arranged parallel to the truncated table 501 is fixedly installed in the fixed table 201, and the telescopic end of the electric push rod 603 is fixedly connected to the circular ring 602.

[0057] When the locking assembly is not locked by the pushing assembly, the numerous sliding posts 502 slidably plugged in the circular table 501 do not contact the fixed posts 504. When the circular table 301 is locked by the pushing assembly, the staff can control the electric push rod 603 to start, so that its telescopic end pushes the circular table 501 to move right. After the circular table 501 moves to the right, it drives the numerous sliding posts 502 to move right together. A small number of sliding posts 502 facing the fixed posts 504 are stopped by the fixed posts 504 and cannot continue to move to the right. The sliding posts 502 that are not stopped by the fixed posts 504 continue to move to the right. Finally, after the numerous sliding posts 502 move to the right, they are wrapped around the outer side of the fixed posts 504 under the elastic support of the corresponding third springs 503. At this time, they are wrapped and blocked by the numerous sliding posts 502, so that the position of the fixed posts 504 cannot move in the up, down, front and back directions, thereby limiting and maintaining the position of the circular seat 301.

[0058] When the pushing assembly is used to control the locking assembly to unlock the circular seat 301, the staff controls the electric push rod 603 to start again, so that its telescopic end drives the circular table 501 to move to the left and reset, driving the numerous sliding columns 502 to move to the left, and withdrawing from the wrapping blockage of the fixed column 504. At this time, the movement of the fixed column 504 is not blocked, and the circular seat 301 can be flexibly moved and adjusted relative to the first frame 203 after being subjected to the force in the up, down, front and back directions.

[0059] In the present application, the circular table 501 in the locking assembly is controlled to move left and right by pushing the assembly, so that after the circular table 501 moves to the right, it can drive many sliding columns 502 to wrap the fixed column 504 fixed on the second bracket 404, thereby limiting the movement of the fixed column 504 and realizing the locking of the position state of the circular seat 301. The locking state of the circular seat 301 is controlled by moving the telescopic end of the electric push rod 603, which effectively improves the convenience of locking and unlocking control of the circular seat 301. The circular seat 301 is locked by wrapping the fixed column 504 with the help of many sliding columns 502. The structure is simple and stable, which is conducive to ensuring the firmness of the circular seat 301 when it is locked after the position is adjusted.

[0060] When the first frame 203 is driven to rotate by the rotating shaft 204, since the sliding sleeve 601 is slidably sleeved on the outer side of the ring 602 and the axis of the first frame 203 coincides with the axis of the ring 602, during the rotation of the first frame 203, the table 501 can stably slide around the ring 602 under the connection of the sliding sleeve 601, and the table 501 and the ring 602 are rotatably connected by the sliding sleeve 601, so that the left and right pushing of the table 501 by the electric push rod 603 will not be affected by the rotation of the first frame 203, which is conducive to ensuring the movement of the telescopic end of the electric push rod 603, pushing the table 501 to move left and right, and controlling the structural stability of the circular seat 301 when it is locked.

[0061] See also Figure 4 and Figure 5 There are two locking assemblies in total, and the two locking assemblies are respectively arranged corresponding to the two second brackets 404. There are two electric push rods 603 in total, and the two electric push rods 603 are symmetrically arranged on both sides of the rotating shaft 204. During the use of the CNC machine tool, by correspondingly arranging the two locking assemblies on the left sides of the two symmetrically arranged second brackets 404, the number of fixed columns 504 that are restricted when the circular seat 301 is in a locked state can be effectively improved, which is beneficial to further improve the structural stability of the circular seat 301 after being locked. At the same time, by arranging two electric push rods 603 to push the round table 501, it is beneficial to improve the stability of the ring 602 pushing the two round tables 501 to move to the right.

[0062] See also Figure 3 , Figure 6 and Figure 8The auxiliary adjustment component 8 also includes a first bidirectional screw 803 vertically rotatably installed on the front and rear sides of the second frame 801, two first push plates 802 are symmetrically threadedly sleeved on the upper and lower ends of the two first bidirectional screws 803, and the second bidirectional screws 805 arranged longitudinally are symmetrically rotatably installed on the upper and lower sides of the second frame 801. The first bidirectional screw 803 and the second bidirectional screw 805 are staggered left and right, and the two second push plates 804 are symmetrically threadedly sleeved on the front and rear ends of the two second bidirectional screws 805. A linkage component 9 is connected between the two first bidirectional screws 803 and the two second bidirectional screws 805. The linkage component 9 It includes a first transmission component 901 which is transmission-connected between the ends of two first bidirectional screws 803, a second transmission component 902 which is transmission-connected between the ends of two second bidirectional screws 805, a first gear 903 is coaxially fixed to the end of one of the first bidirectional screws 803, a second gear 904 which is rotatably mounted on the second frame 801 and which meshes with the first gear 903, and a third bevel gear 905 is coaxially fixed to the second gear 904, a fourth bevel gear 906 which meshes with the third bevel gear 905 is coaxially fixed to the end of one of the second bidirectional screws 805, and the fourth bevel gear 906 is externally connected to a driving unit.

[0063] During the use of the CNC machine tool, the drive unit connected to the fourth bevel gear 906 is powered on and started. The drive unit can be a motor, which is not drawn in the figure. After the drive unit is powered on and started, it will drive the fourth bevel gear 906 to rotate, causing the second bidirectional screw 805 to rotate. At the same time, with the help of the meshing of the fourth bevel gear 906 and the third bevel gear 905, the rotational power is transmitted to the second gear 904, and then with the help of the meshing of the second gear 904 and the first gear 903, the rotational power is transmitted to the first bidirectional screw 803. Through the transmission connection between the two first bidirectional screws 803 by the first transmission component 901, and the transmission connection between the two second bidirectional screws 805 by the second transmission component 902, the two first bidirectional screws 803 and the two second bidirectional screws 805 rotate synchronously. Since the two first push plates 802 are symmetrically threaded on the upper and lower sides of the two first bidirectional screws 803 At the end, the two second push plates 804 are symmetrically threadedly sleeved on the front and rear ends of the two second bidirectional screws 805, and the upper and lower sides of the first bidirectional screw 803 have opposite thread directions, and the front and rear sides of the second bidirectional screw 805 have opposite thread directions. This makes the two first bidirectional screws 803 and the two second bidirectional screws 805 rotate synchronously, and the two first push plates 802 and the two second push plates 804 will synchronously and relatively move toward the center position of the second frame 801, impose restrictions on the processing position of the cylindrical workpiece, perform auxiliary positioning, and push the axis of the processing position of the cylindrical workpiece to be processed to a state of coincidence with the center position of the second frame 801. Since the center position of the second frame 801 coincides with the axis of the rotating shaft 204, the processing position of the cylindrical workpiece is adjusted by the auxiliary adjustment component 8, and the axis of its processing position is coaxial with the axis of the rotating shaft 204, thereby performing precise and stable rotary turning processing.

[0064] In the present application, by symmetrically threading the two first push plates 802 on the upper and lower ends of the two first bidirectional screws 803, and symmetrically threading the two second push plates 804 on the front and rear ends of the two second bidirectional screws 805, in conjunction with the transmission connection of the first transmission assembly 901 and the second transmission assembly 902 in the linkage assembly 9, and the meshing transmission of the first gear 903 and the second gear 904, the third bevel gear 905 and the fourth bevel gear 906, the two first push plates 802 and the two second push plates 804 can be synchronously moved and adjusted toward the center position of the second frame 801 without setting up multiple drive units, and the coordinated consistency of the movement and adjustment of the two first push plates 802 and the two second push plates 804 can be effectively guaranteed, and the accuracy of the device in assisting the positioning of the axis of the cylindrical workpiece to be processed is adjusted to a certain extent.

[0065] The above are only the best implementation methods adopted by this application in combination with current actual needs, but the protection scope of this application is not limited to this.

Claims

1. A CNC machine tool with an axis auxiliary positioning structure, comprising a CNC machine tool body (1), characterized in that: The CNC machine tool body (1) is provided with an axle seat assembly (2), and the axle seat assembly (2) comprises a fixed platform (201) fixedly connected to the CNC machine tool body (1); a circular plate (202) is rotatably mounted on the fixed platform (201), and a first square frame (203) is fixedly mounted at the center of the circular plate (202); a rotating shaft (204) is fixedly mounted at the center of the first square frame (203); a clamping assembly (3) is mounted on the first square frame (203), and the clamping assembly (3) comprises a circular seat (301) movably mounted on a side of the first square frame (203) away from the rotating shaft (204); a plurality of clamping columns (302) are slidably mounted on the circular seat (301); a translation assembly is arranged between the first square frame (203) and the circular seat (301); and a locking assembly for locking the circular seat (301) is installed in the first frame (203); The translation assembly comprises a first bracket (401) which is arranged in the first frame (203) and is symmetrically fixed to the end wall of the circular seat (301) in the front and rear directions. A first straight rod (402) which is vertically fixed to the inner end wall of the first frame (203) is slidably inserted in the first bracket (401). A first spring (403) which is elastically supported between the two sides of the first bracket (401) and the inner end wall of the first frame (203) is movably sleeved on the first straight rod (402). The first frame (20 3) a second bracket (404) is provided inside and is symmetrically fixed on the end wall of the circular seat (301), and a second straight rod (405) is slidably inserted into the second bracket (404) and is longitudinally fixed on the inner end wall of the first frame (203). The second straight rod (405) and the first straight rod (402) are arranged to be offset left and right, and a second spring (406) is movably sleeved on the second straight rod (405) and is elastically supported between the two sides of the second bracket (404) and the inner end wall of the first frame (203); The locking assembly comprises a round table (501) correspondingly arranged on the left side of the second bracket (404), and the round table (501) is installed in the first frame (203) for transverse sliding, and a plurality of evenly distributed sliding columns (502) are arranged in the round table (501) for transverse sliding, and a third spring (503) for elastically supporting the sliding column (502) is fixedly installed in the round table (501), and a fixed column (504) is fixedly installed on the end wall of the second bracket (404) on the side close to the sliding column (502); A pushing assembly for controlling the movement of the locking assembly is installed in the fixed platform (201); a slide rail (7) transversely arranged on the upper and lower sides of the shaft seat assembly (2) is fixed in the CNC machine tool body (1); a slide seat (701) is slidably installed in the slide rail (7); an auxiliary adjustment assembly (8) is installed between the upper and lower slide seats (701); the auxiliary adjustment assembly (8) comprises a second square frame (801) movably sleeved on the outside of the fixed platform (201); the second square frame (801) is fixedly connected between the upper and lower slide seats (701); the center position of the second square frame (801) is coaxially arranged with the rotating shaft (204); a first push plate (802) symmetrically sliding up and down is installed in the second square frame (801); a second push plate (804) symmetrically sliding front and back is installed in the second frame (801); the first push plate (802) and the second push plate (804) are staggered left and right.

2. A CNC machine tool with an axis auxiliary positioning structure according to claim 1, characterized in that: A flexible protective cover (205) is fixed around the first square frame (203) and the circular seat (301), and the flexible protective cover (205) has multiple folds.

3. A CNC machine tool with an axis auxiliary positioning structure according to claim 1, characterized in that: A plurality of first screw rods (303) located on the radius of the circular seat (301) are arranged around the circular seat (301), and the first screw rods (303) are rotatably installed in the circular seat (301), and the outer thread of the first screw rod (303) is sleeved with a sliding seat (304) that is slidably fitted with the inner end wall of the circular seat (301), and the clamping column (302) is fixedly connected to the corresponding sliding seat (304), and a servo motor (305) for driving the plurality of first screw rods (303) to rotate synchronously is fixedly installed on one side of the circular seat (301) close to the first frame (203).

4. A CNC machine tool with an axis auxiliary positioning structure according to claim 3, characterized in that: Two clamping columns (302) arranged side by side are fixedly mounted on each of the sliding seats (304); a first bevel gear (306) is coaxially fixed to one end of the first screw rod (303) close to the servo motor (305); and a second bevel gear (307) meshing with a plurality of first bevel gears (306) is coaxially fixed to the driving shaft of the servo motor (305).

5. The CNC machine tool with the axis auxiliary positioning structure according to claim 1, characterized in that: The pushing assembly comprises a sliding sleeve (601) fixedly mounted on the left side of the truncated table (501), and a circular ring (602) coaxially arranged with the rotating shaft (204) is slidably connected in the sliding sleeve (601); an electric push rod (603) parallel to the truncated table (501) is fixedly mounted in the fixed table (201), and a telescopic end of the electric push rod (603) is fixedly connected with the circular ring (602).

6. A CNC machine tool with an axis auxiliary positioning structure according to claim 5, characterized in that: There are two locking assemblies in total, and the two locking assemblies are respectively arranged corresponding to the two second brackets (404). There are two electric push rods (603) in total, and the two electric push rods (603) are symmetrically arranged on both sides of the rotating shaft (204).

7. The CNC machine tool with the axis auxiliary positioning structure according to claim 1, characterized in that: The auxiliary adjustment component (8) also includes a first bidirectional screw (803) vertically rotatably mounted on the front and rear sides of the second frame (801); two first push plates (802) are symmetrically threadedly sleeved on the upper and lower ends of the two first bidirectional screws (803); a second bidirectional screw (805) longitudinally arranged is symmetrically rotatably mounted on the upper and lower sides of the second frame (801); the first bidirectional screw (803) and the second bidirectional screw (805) are staggered left and right; two second push plates (804) are symmetrically threadedly sleeved on the front and rear ends of the two second bidirectional screws (805); and a linkage component (9) is connected between the two first bidirectional screws (803) and the two second bidirectional screws (805).

8. The CNC machine tool with the axis auxiliary positioning structure according to claim 7, characterized in that: The linkage assembly (9) comprises a first transmission assembly (901) which is transmission-connected between the ends of the two first bidirectional screws (803); a second transmission assembly (902) which is transmission-connected between the ends of the two second bidirectional screws (805); a first gear (903) is coaxially fixed to the end of one of the first bidirectional screws (803); a second gear (904) which meshes with the first gear (903) is rotatably mounted on the second frame (801); a third bevel gear (905) is coaxially fixed to the second gear (904); a fourth bevel gear (906) which meshes with the third bevel gear (905) is coaxially fixed to the end of one of the second bidirectional screws (805); and the fourth bevel gear (906) is externally connected to a drive unit.

Images