Numerically-controlled machine tool with inner supporting and positioning structure

Abstract

The utility model discloses a numerical control machine tool with an inner supporting and positioning structure, and relates to the field of numerical control machine tools. When a numerical control machine tool is used for carrying out numerical control machining on a pipe fitting type workpiece, the workpiece can be inserted into the surface of the inner supporting and positioning shaft, then the core shaft is pushed to move towards the inner side end of the inner supporting and positioning shaft through the pushing assembly, and at the moment, the core shaft can drive the telescopic inner supporting assemblies to synchronously extend outwards; the multiple sets of telescopic inner supporting assemblies are made to synchronously abut against and support the inner wall of the workpiece in the axial direction, multi-point inner supporting and positioning are conducted on the workpiece through the multiple sets of telescopic inner supporting assemblies which are evenly distributed, and compared with single-point supporting and positioning of the end of the workpiece through a chuck in the prior art, the workpiece supporting stability can be improved; and meanwhile, through multi-point supporting and positioning, the stress condition of the workpiece during positioning can be dispersed, and the situation that the workpiece is extruded and deformed due to the fact that single-point force is too large is prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to numerical control machine tool field, specifically, and particularly relates to a numerical control machine tool with internal support positioning structure. BACKGROUND

[0002] Numerical control machine tool is a kind of automatic machine tool equipped with program control system, mainly including numerical control lathe, numerical control milling machine, numerical control grinding machine and numerical control drilling machine etc. China patent CN101954502B discloses a kind of numerical control drilling machine for pipe fitting processing, when pipe fitting is processed, the end of pipe fitting is clamped and positioned by chucking chuck.But since pipe fitting is hollow structure, when the end of pipe fitting is clamped by chucking chuck, pipe fitting is easily extruded and deformed, so as to affect the quality of pipe fitting after processing, on the other hand, when pipe fitting is long, pipe fitting cannot be well positioned and fixed by clamping the end of pipe fitting, so as to affect the stability of pipe fitting positioning, further affect pipe fitting processing effect. CONTENT OF UTILITY MODEL

[0003] In view of the problems in the related art, the utility model provides a kind of numerical control machine tool with internal support positioning structure to overcome the above technical problems existing in the prior art.

[0004] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0005] The utility model is a kind of numerical control machine tool with internal support positioning structure, including numerical control machine tool main body, the one end of numerical control machine tool main body is provided with inlet and outlet, the inside of numerical control machine tool main body is installed with the internal support positioning shaft in the one end of inlet and outlet, multiple groups of telescopic internal support components are installed on internal support positioning shaft along the axial direction, the inside of internal support positioning shaft is installed with the mandrel of transmission connection with telescopic internal support positioning assembly, the one end of internal support positioning shaft is also installed with the pusher assembly that can drive mandrel moves to internal support positioning shaft inside end, mandrel can drive multiple groups of telescopic internal support components synchronous outward stretching when moving to internal support positioning shaft inside end, so that telescopic internal support component enters support state.

[0006] Further, the telescopic internal support component includes multiple connecting rods, multiple connecting rods are circumferentially distributed and rotatably installed on the outer ring of mandrel, the outer end of multiple connecting rods is rotatably installed with internal support positioning block, the through slot is provided on internal support positioning shaft for connecting rod to pass through, and connecting rod is rotatably connected with the slot wall of through slot by connecting shaft.

[0007] Further, the pusher assembly includes the gas cylinder that is arranged at the end of internal support positioning shaft, the telescopic end of gas cylinder is fixedly installed with push block, and the one end of push block is fixedly installed with push rod.

[0008] Further, one end of the numerical control machine tool body is internally provided with a hydraulic lifting shaft, a lifting seat is fixedly installed on the telescopic end of the top of the hydraulic lifting shaft, and the cylinder is fixedly installed on the top surface of the lifting seat.

[0009] Further, the inner side end of the mandrel is fixedly installed with a sliding block slidably connected inside the inner support positioning shaft, and a return spring is installed on one side of the sliding block.

[0010] Further, one end of the numerical control machine tool body is internally provided with a hydraulic lifting shaft, a lifting seat is fixedly installed on the telescopic end of the top of the hydraulic lifting shaft, and the cylinder is fixedly installed on the top surface of the lifting seat.

[0011] Further, the numerical control machine tool body is internally provided with a plurality of conveying wheels below the inner support positioning shaft, the conveying wheels are drivingly connected through synchronous wheels and synchronous belts, and one end of one of the conveying wheels is drivingly connected with a conveying motor.

[0012] The utility model has the following beneficial effects:

[0013] 1. When the numerical control machine tool is used for numerical control machining of pipe workpieces, the workpiece can be inserted into the surface of the inner support positioning shaft, and then the mandrel is pushed inwardly to the inner side end of the inner support positioning shaft through the pushing assembly, so that the mandrel can drive a plurality of telescopic inner support assemblies to synchronously expand outwardly, so that the plurality of telescopic inner support assemblies synchronously abut and support the inner wall of the workpiece in the axial direction, and the workpiece is positioned by a plurality of evenly distributed telescopic inner support assemblies, which can improve the stability of the workpiece support and improve the machining effect of the numerical control machine tool on the workpiece, and the stress of the workpiece during positioning can be dispersed by the multi-point support positioning, so as to prevent the workpiece from being deformed due to excessive force on a single point.

[0014] Of course, implementing any product of the utility model does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain the drawings according to these drawings without creating any creative labor.

[0016] Figure 1 It is a three-dimensional structure schematic view of the numerical control machine tool of the utility model;

[0017] Figure 2 It is a three-dimensional structure schematic view of the numerical control machine tool of the utility model;

[0018] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A;

[0019] Figure 4 This is the third three-dimensional structural schematic diagram of the CNC machine tool of this utility model;

[0020] Figure 5 This utility model Figure 4 A magnified schematic diagram of the structure at point B.

[0021] In the diagram: 1. CNC machine tool body; 2. Inlet / outlet; 3. Internal support positioning shaft; 4. Turntable; 5. Lifting seat; 6. Hydraulic lifting shaft; 7. Cylinder; 8. Push block; 9. Conveyor wheel; 10. Conveyor motor; 11. Synchronous pulley; 12. Synchronous belt; 13. Through groove; 14. Connecting rod; 15. Internal support positioning block; 16. Push rod; 17. Mandrel; 18. Slider; 19. Return spring. Detailed Implementation

[0022] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0023] Please see Figures 1-5 As shown, this utility model is a CNC machine tool with an internal support positioning structure, including a CNC machine tool body 1. One end of the CNC machine tool body 1 is provided with a material inlet / outlet 2. An internal support positioning shaft 3 located at one end of the material inlet / outlet 2 is installed inside the CNC machine tool body 1. Multiple sets of telescopic internal support components are installed on the internal support positioning shaft 3 along the axial direction. A spindle 17 that is drivenly connected to the telescopic internal support positioning components is installed inside the internal support positioning shaft 3. A push component that can drive the spindle 17 to move towards the inner end of the internal support positioning shaft 3 is also installed at one end of the internal support positioning shaft 3. When the spindle 17 moves towards the inner end of the internal support positioning shaft 3, it can drive multiple sets of telescopic internal support components to extend outward synchronously, so that the telescopic internal support components enter the support state.

[0024] When CNC machining of pipe-type workpieces is performed on a CNC machine tool, the workpiece is first inserted into the surface of the inner support positioning shaft 3 through the inlet / outlet 2. Then, the mandrel 17 is pushed towards the inner end of the inner support positioning shaft 3 by the push assembly. At this time, the mandrel 17 can drive multiple sets of telescopic inner support assemblies to extend outward synchronously, so that multiple sets of telescopic inner support assemblies simultaneously abut against and support the inner wall of the workpiece, fixing the workpiece. Then, the workpiece can be CNC machined by the CNC machining tool in the main body 1 of the CNC machine tool. By using multiple sets of evenly distributed telescopic inner support assemblies to perform multi-point inner support positioning of the workpiece, compared with the single-point support positioning of the workpiece end by the chuck in the prior art, the stability of the workpiece support can be improved, thereby improving the machining effect of the CNC machine tool on the workpiece. At the same time, multi-point support positioning can disperse the force on each positioning point when positioning the workpiece, preventing excessive force at a single point from causing the workpiece to be squeezed and deformed.

[0025] Specifically, the push assembly includes a cylinder 7 located at the end of the inner support positioning shaft 3, a push block 8 fixedly installed at the telescopic end of the cylinder 7, and a push rod 16 fixedly installed at one end of the push block 8; a hydraulic lifting shaft 6 is installed at one end inside the CNC machine tool body 1, a lifting seat 5 is fixedly installed on the telescopic end of the top of the hydraulic lifting shaft 6, and the cylinder 7 is fixedly installed on the top surface of the lifting seat 5.

[0026] The push block 8 is initially located below the inner support positioning shaft 3, which facilitates the workpiece to be inserted into the inner support positioning shaft 3 via the end of the inner support positioning shaft 3. Then, the lifting seat 5 is driven upward by the hydraulic lifting shaft 6, so that the push block 8 moves upward to the position directly opposite the end of the inner support positioning shaft 3. Then, the cylinder 7 drives the push block 8 and the push rod 16 to move towards the inner support positioning shaft 3, so that the push rod 16 is inserted into the interior of the inner support positioning shaft 3, and pushes the mandrel 17 to the left.

[0027] Specifically, the telescopic inner support assembly includes multiple connecting rods 14, which are circumferentially distributed and rotatably mounted on the outer ring of the spindle 17. The outer ends of the multiple connecting rods 14 are rotatably mounted with inner support positioning blocks 15. The inner support positioning shaft 3 is provided with a through groove 13 for the connecting rods 14 to pass through, and the connecting rods 14 are rotatably connected to the groove wall of the through groove 13 through a connecting shaft.

[0028] The connecting rod 14 is initially in an inclined state, and a slot is provided on the connecting rod 14 to engage with the connecting shaft. When the spindle 17 is pushed to the left, the spindle 17 drives the bottom end of the connecting rod 14 to move to the left. At this time, the connecting rod 14 rotates around the connecting shaft as the fulcrum, so that the connecting rod 14 rotates and adjusts in the vertical direction. At the same time, the connecting rod 14 drives the inner support positioning block 15 to move outward, so that multiple circumferentially distributed inner support positioning blocks 15 in the telescopic inner support assembly expand outward synchronously and abut against the inner wall of the workpiece to perform inner support positioning of the workpiece.

[0029] Specifically, a slider 18 is fixedly installed on the inner end of the mandrel 17 and is slidably engaged inside the inner support positioning shaft 3. A return spring 19 is installed on one side of the slider 18. When the mandrel 17 is moved to the left, the slider 18 moves to the left and retracts the return spring 19. When the workpiece is finished and needs to be released from positioning, the push assembly is moved to reset and release the push limit on the mandrel 17. At this time, the mandrel 17 moves to the right under the reset force of the return spring 19 and pulls the connecting rod 14 to rotate and retract, so that the inner support positioning block 15 is separated from the inner wall of the workpiece.

[0030] Specifically, a turntable 4 is rotatably mounted at one end inside the main body 1 of the CNC machine tool, and an inner support positioning shaft 3 is fixedly mounted on one side of the turntable 4. A servo motor is connected to the other end of the turntable 4. When processing the workpiece, the turntable 4 can be driven to rotate by the servo motor, so that the turntable 4 drives the inner support positioning shaft 3 and the workpiece on it to rotate, thereby facilitating the processing of the workpiece in the circumferential direction.

[0031] Specifically, the CNC machine tool body 1 has multiple conveyor wheels 9 installed inside, located below the inner support positioning shaft 3. The conveyor wheels 9 are connected by synchronous pulleys 11 and synchronous belts 12, and one of the conveyor wheels 9 is connected to a conveyor motor 10 at its end. When the workpiece is inserted into the surface of the inner support positioning shaft 3, the conveyor wheel 9 is supported on the bottom surface of the workpiece. At this time, the conveyor motor 10, synchronous pulleys 11 and synchronous belts 12 drive the multiple conveyor wheels 9 to rotate synchronously, so that the conveyor wheels 9 can convey the workpiece by frictional resistance, making the workpiece loading process more convenient. Correspondingly, when the workpiece is unloaded after processing, the conveyor motor 10 is rotated in the opposite direction to drive the conveyor wheels 9 to rotate in the opposite direction, so that the conveyor wheels 9 drive the workpiece to move in the opposite direction for unloading.

[0032] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize the utility model.

Claims

1. A CNC machine tool with an internal support positioning structure, comprising a CNC machine tool body (1), characterized in that: The CNC machine tool body (1) is provided with a feed port (2) at one end. An inner support positioning shaft (3) located at one end of the feed port (2) is installed inside the CNC machine tool body (1). Multiple sets of telescopic inner support components are installed on the inner support positioning shaft (3) along the axial direction. A spindle (17) that is connected to the telescopic inner support positioning components is installed inside the inner support positioning shaft (3). A push component that can drive the spindle (17) to move to the inner end of the inner support positioning shaft (3) is also installed at one end of the inner support positioning shaft (3). When the spindle (17) moves to the inner end of the inner support positioning shaft (3), it can drive multiple sets of telescopic inner support components to extend outward synchronously so that the telescopic inner support components enter the support state.

2. A CNC machine tool with an internal support positioning structure according to claim 1, characterized in that: The telescopic inner support assembly includes multiple connecting rods (14), which are circumferentially distributed and rotatably mounted on the outer ring of the spindle (17). The outer ends of the multiple connecting rods (14) are rotatably mounted with inner support positioning blocks (15). The inner support positioning shaft (3) is provided with a through groove (13) for the connecting rods (14) to pass through, and the connecting rods (14) are rotatably connected to the groove wall of the through groove (13) through a connecting shaft.

3. A CNC machine tool with an internal support positioning structure according to claim 1, characterized in that: The jacking assembly includes a cylinder (7) disposed at the end of the inner support positioning shaft (3), a jacking block (8) is fixedly installed at the telescopic end of the cylinder (7), and a push rod (16) is fixedly installed at one end of the jacking block (8).

4. A CNC machine tool with an internal support positioning structure according to claim 3, characterized in that: A hydraulic lifting shaft (6) is installed at one end inside the main body (1) of the CNC machine tool. A lifting seat (5) is fixedly installed on the telescopic end of the top of the hydraulic lifting shaft (6). The cylinder (7) is fixedly installed on the top surface of the lifting seat (5).

5. A CNC machine tool with an internal support positioning structure according to claim 1, characterized in that: The inner end of the spindle (17) is fixedly installed with a slider (18) that is slidably engaged inside the inner support positioning shaft (3), and a return spring (19) is installed on one side of the slider (18).

6. A CNC machine tool with an internal support positioning structure according to claim 1, characterized in that: A turntable (4) is rotatably installed at one end of the main body (1) of the CNC machine tool. The inner support positioning shaft (3) is fixedly installed on one side of the turntable (4). A servo motor is connected to the other end of the turntable (4).

7. A CNC machine tool with an internal support positioning structure according to claim 1, characterized in that: The CNC machine tool body (1) is equipped with a number of conveyor wheels (9) located below the inner support positioning shaft (3). The conveyor wheels (9) are connected to each other by a synchronous pulley (11) and a synchronous belt (12), and a conveyor motor (10) is connected to the end of one of the conveyor wheels (9).

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