CN115488640A - An automatic CNC milling machine for machining oblique holes - Google Patents

Abstract

The invention relates to an automatic numerical control milling machine for machining oblique holes, which includes a machine base, on which a rotary table for clamping a workpiece and performing axial rotation and a power turret device for drilling the workpiece are arranged , the power turret device is installed on the machine base through the turret moving device, and can move relative to the rotary table along the X-axis and Z-axis directions; the power turret device is arranged along the X-axis direction with several intervals The set of cutter head clamping parts, the arrangement direction of several cutter head clamping parts and the axis direction of the rotary table are perpendicular to each other. Arranged at intervals, when a certain tool is processing the workpiece, it can avoid the adjacent tool head clamping part and the tool from the rotary table, so that several tool head clamping parts can be set on one Z axis to realize feed , Reduce the interference to the tool, and a Z-axis saves a lot of space in the structure.

Description

An automatic CNC milling machine for machining oblique holes

technical field

The invention relates to the technical field of machining, in particular to an automatic numerical control milling machine for machining inclined holes.

Background technique

With the development of society and the progress of industry, milling machines have been used more and more to process workpieces. When milling machines are processed, they mainly fix the workpieces on the worktable and use milling cutters that can move in the three-axis direction. The workpiece is processed. However, only vertical holes can be processed. For the need to process inclined holes on the surface of the workpiece, the worker can only change the fixing method of the workpiece to make it tilt to a specified angle, which affects the processing efficiency. The existing milling machine proposed in order to solve the above problems technology, as described below:

Prior art 1, as shown in the Chinese patent document application number: CN202110496033.X "double-spindle multi-linkage CNC milling machine" structure, wherein the public records mainly include the middle bridge plate worktable in the X-axis direction and several Z-axis feeders. For the given spindle, since the direction of the rotation axis of the middle bridge plate worktable is consistent with the direction in which several spindles are arranged, each spindle needs to be driven by an independent Z-axis when machining inclined holes, so that other non-machining spindles can The avoidance of the middle bridge plate table results in multiple Z-axes being set on the milling machine, which is likely to cause mutual interference between the tools, and the increased Z-axis leads to an increase in the volume of the milling machine and the area occupied by it.

Therefore, the applicant provides a new solution that can replace the above-mentioned prior art by improving and perfecting the structure, for consumers to choose and use.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned existing problems, to provide a simple and reasonable micro-pressure steam cooker, whose main function is to enable the adjacent cutter head clamping part and cutter to avoid the rotary workbench, Several tool head clamping parts can be set on one Z-axis to realize feed, reducing interference to the tool.

An automatic numerical control milling machine for machining inclined holes, comprising a machine base, on which a rotary table for clamping a workpiece and performing axial rotation and a power turret device for drilling a workpiece are arranged, the The power turret device is installed on the machine base through the turret moving device, and can move relative to the rotary table along the X-axis and Z-axis; the power turret device is arranged with several knives arranged at intervals along the X-axis direction. In the head clamping part, the arrangement direction of the several cutter head clamping parts and the axial direction of the rotary table are perpendicular to each other.

The purpose of the present invention can also adopt the following technical measures to solve:

As a more specific solution, the base is also provided with a support beam extending along the X-axis direction, and the support beam is provided with a transfer device that can move along the X-axis and Z-axis directions and is used for loading and unloading. manipulator.

As a further solution, the rotary table includes a fixture main body, the fixture main body includes a middle bridge plate, a central positioning plate removable on the middle bridge plate and a clamping and fixing device, and a clamp is arranged on the central positioning plate The workpiece is pressed on the clamping surface by the clamping and fixing device, and the central positioning plate is provided with an oblique avoidance hole corresponding to the oblique hole of the workpiece, and the oblique avoidance hole is coaxially arranged with the oblique hole of the workpiece, and Corresponding to the oblique avoidance hole on the bridge plate, there are avoidance grooves for the cutter head clamping part and drill cutter avoidance grooves.

As a further solution, the clamping and fixing device includes two rotating cylinders symmetrically arranged on both sides of the central positioning plate and a rotating pressure plate connected to the piston shaft of the cylinder, and the rotating cylinder is fixedly arranged on the middle bridge plate and driven to rotate The pressing plate reciprocates and moves forward and backward relative to the clamping surface, and the movable end of the rotating pressing plate is provided with an adjustable pressing part that can adjust the clamping force and/or clamping position according to different workpiece thicknesses.

As a further solution, the rotary table also includes a bridge bottom plate, a tailstock installed on the bridge bottom plate, a rotating body, and a driving device for driving the rotating body to rotate; the clamp body also includes a connecting splint, and the two ends of the middle bridge plate Connecting splints are respectively installed, and each connecting splint connects the two ends of the middle bridge plate to the tailstock and the rotating main body respectively through connecting chucks, and the rotating main body is controlled by the driving device to drive the clamping main body to rotate axially.

As a further solution, the transfer manipulator includes a lifting frame, a switching cylinder, a clamp carrier plate and two clamp heads; the clamp carrier plate is hinged at the bottom of the lifting frame through a rotating pair, and one end of the switching cylinder is hinged to the lifting frame, The other end is hinged on the jig carrier plate, the jig carrier plate is driven to swing by switching the cylinder, and the two jig heads are respectively arranged on the jig carrier plate.

As a further solution, the turret moving device includes a lateral movement seat and a longitudinal movement seat, and the power turret device is fixedly installed on the longitudinal movement seat; a Z-axis wire is arranged between the longitudinal movement seat and the transverse movement seat The rod guide rail pair and the first drive motor driving the Z-axis screw guide rail pair drive the power turret device to move up and down relative to the rotary table through the first drive motor; an X-axis screw rod is arranged between the lateral movement seat and the machine base The guide rail pair and the second drive motor driving the X-axis screw guide rail pair drive the power turret device to slide left and right relative to the rotary table through the second drive motor.

As a further solution, the power turret device includes a turret installation base plate, on which there are several rotating spindles arranged vertically and arranged along the X-axis direction and spindle servo motors that control the rotation of several rotating spindles, The motor shaft of the main shaft servo motor is provided with an active transmission part, and the rotating main shaft is provided with a driven transmission part connected with the active transmission part, and the bottom of the rotating main shaft is provided with a tool for installing a drill, reamer, or milling cutter. head holder.

As a further solution, the transfer manipulator also includes a sliding bracket, the sliding bracket is provided with a slider, and the supporting beam is provided with a traversing slide rail that forms a linear sliding fit with the slider;

The sliding bracket is provided with a third driving motor, the motor shaft of the third driving motor is provided with a traversing gear, the supporting beam is provided with a traversing rack meshed with the traversing gear, and the third driving motor drives the sliding bracket to reciprocate on supporting beams;

The fourth driving motor is arranged on the sliding bracket, the motor shaft of the fourth driving motor is provided with a vertical gear, and the lifting frame is provided with a vertical gear rack meshed with the vertical gear and a vertical rack that is in linear sliding fit with the sliding bracket. Move the slide rail, and the fourth drive motor drives the lifting frame to lift up and down relative to the sliding support.

As a further solution, the base is provided with a first waste unloading surface inclined along the X-axis direction and a second waste unloading surface inclined along the Y-axis direction. The lower part of the waste unloading surface, and the machine base is provided with a discharge port that communicates with the lower part of the second waste unloading surface; and the first waste unloading surface is provided with a fixture support platform, and the rotary table is installed on the fixture support on stage.

The beneficial effects of the present invention are as follows:

(1) An automatic CNC milling machine for machining oblique holes according to the present invention. The CNC machine tool arranges several cutter head clamping parts at intervals in the vertical direction to the rotary table. When a certain tool is processing a workpiece, it can Make the adjacent cutter head holders and cutters avoid the rotary table, so that several cutter head holders can be set on one Z-axis to achieve feed, reducing interference with the tool, and one Z-axis is structurally Save a lot of space.

(2) An automatic numerical control milling machine for machining inclined holes according to the present invention, the power turret device of this structure is equipped with three or more rotating spindles, which can be equipped with drilling cutters, milling cutters and reamers at the same time, reducing the tool change time ,Improve work efficiency.

(3) An automatic CNC milling machine for machining inclined holes according to the present invention. The rotary table of this structure can rotate axially, so that the milling machine can process vertical holes and inclined holes or inclined slots at any angle and depth, satisfying various requirements. The special processing requirements, and the axially rotating rotary table can realize the automatic turning of the workpiece, so that the workpiece can be processed on both sides, which can improve the processing efficiency and automation.

Description of drawings

Fig. 1, Fig. 2 are structural representations of the present invention.

Fig. 3 is a schematic structural diagram of the rotary table of the present invention.

Fig. 4 and Fig. 5 are schematic diagrams of partial exploded structure of the fixture main body of the present invention.

Fig. 6 and Fig. 7 are schematic diagrams of drilling oblique holes on both sides of the workpiece according to the present invention.

Fig. 8 is a structural schematic diagram of the transfer manipulator of the present invention.

Fig. 9 is a schematic structural diagram of the power turret device of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 9: an automatic numerical control milling machine for machining inclined holes, including a base 1, on which a rotary table 2 for clamping a workpiece A and rotating axially and For the power turret device 3 for drilling the workpiece A, the power turret device 3 is installed on the machine base 1 through the turret moving device 4, and can move relative to the rotary table 2 along the X-axis and the Z-axis direction; The power turret device 3 is arranged along the X-axis direction with several cutter head clamping parts 5 arranged at intervals, and the arrangement direction of the several cutter head clamping parts 5 is perpendicular to the axial direction of the rotary table 2. .

The CNC machine tool arranges several cutter head clamping parts at intervals in the vertical direction to the rotary table, and when a certain tool is processing a workpiece, the adjacent cutter head clamping parts and tools can avoid the rotary table , so that several tool head clamping parts can be set on one Z-axis to achieve feed, reducing interference with the tool, and one Z-axis saves a lot of space in structure.

The base 1 is also provided with a support beam 6 extending along the X-axis direction, and the support beam 6 is provided with a transfer manipulator 7 capable of moving along the X-axis and Z-axis directions for loading and unloading; The workpiece raw material is placed on the rotary table 2 and the processed workpiece is taken out by the transfer manipulator 7, so that the CNC milling machine can realize full automation and reduce the burden on workers.

The rotary table 2 includes a clamp body, the clamp body includes a middle bridge plate 21, a central positioning plate 22 removable on the middle bridge plate 21 and a clamping and fixing device, and the central positioning plate 22 is provided with a clamp The holding surface 221, the workpiece A is pressed on the clamping surface 221 by the clamping and fixing device, and the position of the inclined hole A1 of the central positioning plate 22 corresponding to the workpiece A is provided with an oblique avoidance hole 222, and the oblique avoidance hole 222 and the workpiece A oblique hole A1 is arranged coaxially, and the middle bridge plate 21 is provided with a bit holder avoiding groove 211 and a drill bit avoiding groove 212 corresponding to the inclined avoiding hole 222 .

In addition, the clamping surface 221 of the central positioning plate 22 is provided with a workpiece positioning protrusion 223, and the workpiece positioning protrusion 223 cooperates with the positioning of the workpiece, and the back side of the central positioning plate 22 is provided with a central positioning plate positioning protrusion 224. The bridge plate 21 is provided with a middle bridge plate positioning groove 213 that cooperates with the central positioning plate positioning protrusion 224. The middle bridge plate positioning groove 213 communicates with the cutter head clamping portion avoidance groove 211 through the drill avoidance groove 212, and the drill avoidance The left and right sides of the groove 212 are provided with cutter head clamping portion evacuation end surfaces 214 perpendicular to the inclined avoidance hole 222 , and the cutter head clamping portion avoidance end surfaces 214 also serve as stops for the cutter head clamping portion.

The clamping and fixing device includes two rotating cylinders 23 symmetrically arranged on both sides of the central positioning plate 22 and a rotating pressure plate 24 connected to the cylinder piston shaft. The rotating cylinders 23 are fixed on the middle bridge plate 21 and drive to rotate The pressing plate 24 swings back and forth and moves forward and backward relative to the clamping surface 221, and the movable end of the rotating pressing plate 24 is provided with an adjustable pressing part 241 that can adjust the clamping force and/or the clamping position according to the thickness of different workpieces A. The reciprocating rotating platen 24 on the holding surface 221 can avoid placing the workpiece or clamping the workpiece away by the transfer manipulator 7 after the workpiece is processed;

The rotary table 2 also includes a bridge bottom plate 25 and a tailstock 26 installed on the bridge bottom plate 25, a rotating main body 27 and a driving device 28 that drives the rotating main body 27 to rotate, and is composed of a motor and a reduction box; the clamp main body also includes Connecting splints 29, the two ends of the middle bridge plate 21 are respectively equipped with connecting splints 29, and each connecting splint 29 connects the two ends of the middle bridge plate 21 to the tailstock 26 and the rotating body 27 respectively through the connecting chuck 210, and the driving device 28 controls the rotating main body 27 to drive the axial rotation of the fixture main body; the rotary table 2 can process vertical holes, inclined holes or chute slots of any angle and depth in combination with the above structure, to meet various special processing requirements, and the rotation of the axial rotation The workbench can realize the automatic turning of the workpiece, so that the workpiece can be processed on both sides, which can improve the processing efficiency and automation.

The transfer manipulator 7 includes a lifting frame 71, a switching cylinder 72, a clamp carrier plate 73 and two clamp heads 74; the clamp carrier plate 73 is hinged at the bottom of the lifting frame 71 through a rotating pair hinge 75, and one end of the switching cylinder 72 is hinged On the lifting frame 71, the other end is hinged on the clamp carrier plate 73, the clamp carrier plate 73 is driven by the switching cylinder 72 to swing, and the two clamp heads 74 are respectively arranged on the clamp carrier plate 73; the two clamp heads 74 are arranged side by side on the On the fixture carrier plate 73;

When the switching cylinder 72 is telescopically working, it drives the fixture carrier plate 73 to swing left and right around the rotary pair hinge 75 to switch the use of different fixture heads 74 on the fixture carrier plate 73, so that one of the fixture heads 74 can clamp the workpiece to be processed, and then pass After another clamp head 74 clamps away the processed workpiece, the workpiece to be processed on the clamp head 74 can be transplanted on the rotary table 2 immediately, thereby further improving production efficiency and reducing the waste of the workpiece due to transplanting. time.

The turret moving device 4 includes a laterally moving seat 401 and a longitudinally moving seat 402, and the power turret device 3 is fixedly mounted on the longitudinally moving seat 402; a Z The shaft screw guide pair 403 and the first drive motor 404 that drives the Z-axis screw guide pair 403 drive the power turret device 3 to move up and down relative to the rotary table 2 through the first drive motor 404; An X-axis screw guide pair 405 and a second drive motor 406 for driving the X-axis screw guide pair 405 are arranged between the seats 1, and the power turret device 3 is driven to slide left and right relative to the rotary table 2 through the second drive motor 406; Simple and capable of automating operations.

The power turret device 3 includes a turret installation base plate 301, on which a number of rotating main shafts 302 vertically arranged and arranged along the X-axis direction and a main shaft servo motor 303 for controlling the rotation of several rotating main shafts 302 are arranged on the turret installation base board 301 , the motor shaft of the main shaft servo motor 303 is provided with a driving transmission part 304, and the rotating main shaft 302 is provided with a driven transmission part 305 connected with the driving transmission part 304, and the bottom of the rotating main shaft 302 is provided with a drill or reamer. The cutter head clamping part 5 of a knife or milling cutter; the power turret device of this structure is provided with three or more rotating main shafts, and the three or more rotating main shafts are all driven by a main shaft servo motor 303, which can simplify the structure, and It can reduce production costs at the same time, avoid mutual interference between Z-axis tools, and can simultaneously assemble drilling tools, milling tools and reamers, reducing tool changing time and improving work efficiency.

The transfer manipulator 7 also includes a sliding bracket 76, the sliding bracket 76 is provided with a slider, and the supporting crossbeam 6 is provided with a traversing slide rail 601 which forms a linear sliding fit with the slider;

The sliding bracket 76 is provided with a third drive motor 77, the motor shaft of the third drive motor 77 is provided with a traversing gear 771, the support beam 6 is provided with a traversing rack 602 meshing with the traversing gear 771, and the third The driving motor 77 drives the sliding bracket 76 to reciprocate on the support beam 6;

The sliding bracket 76 is provided with a fourth drive motor 78, the motor shaft of the fourth drive motor 78 is provided with a vertical shift gear 781, and the lifting frame 71 is provided with a vertical shift tooth rack 79 meshing with the vertical shift gear 781 and a vertical shift gear rack 79 that is engaged with the sliding rack 71. The bracket 76 constitutes a vertical slide rail 710 that slides in a straight line, and the fourth drive motor 78 drives the elevating frame 71 to move up and down relative to the sliding bracket 76 .

The above-mentioned structure enables the single transfer manipulator 7 to slide automatically on the loading side and the blanking side, realizing automatic operation.

The base 1 is provided with a first waste unloading surface 101 inclined along the X-axis direction and a second waste unloading surface 102 inclined along the Y-axis direction, the height of the second waste unloading surface 102 receiving the first waste The lower part of the unloading surface 101, and the base 1 is provided with a discharge port 103 communicating with the lower part of the second waste unloading surface 102; The table 2 is installed on the fixture supporting platform 104; this structure helps to collect the debris generated during workpiece processing through the first waste material unloading surface 101, and the first waste material unloading surface 101 and the second waste material unloading surface 102 arranged at an inclination will disintegrate the debris. Chips are discharged to the material port 103, which can improve the machining accuracy of the workpiece and improve the safety of operators.

The above is the preferred solution of the present invention, showing and describing the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principle of the present invention, and the present invention also has various aspects without departing from the spirit and scope of the present invention. Changes and improvements, these changes and improvements all fall within the scope of the claimed invention, and the scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. An automatic numerical control milling machine for machining inclined holes comprises a machine base (1) and is characterized in that a rotary worktable (2) used for clamping a workpiece (A) and axially rotating and a power tool turret device (3) used for drilling the workpiece (A) are arranged on the machine base (1), and the power tool turret device (3) is installed on the machine base (1) through a tool turret moving device (4) and can move along the X-axis direction and the Z-axis direction relative to the rotary worktable (2); the power tool turret device (3) is provided with a plurality of tool bit clamping parts (5) arranged at intervals along the X-axis direction, and the arrangement direction of the tool bit clamping parts (5) is perpendicular to the axis direction of the rotary workbench (2).

2. The automatic numerical control milling machine for machining the inclined hole according to claim 1, wherein: the machine base (1) is further provided with a supporting beam (6) extending along the X-axis direction, and the supporting beam (6) is provided with a transfer manipulator (7) which can move along the X-axis direction and the Z-axis direction and is used for feeding and blanking.

3. The automatic numerical control milling machine for opening inclined holes according to claim 1, wherein: swivel work head (2) include the anchor clamps main part, the anchor clamps main part includes well bridge plate (21), can change central authorities locating plate (22) and centre gripping fixing device on well bridge plate (21), be provided with clamping face (221) on central authorities locating plate (22), work piece (A) compress tightly on clamping face (221) through centre gripping fixing device, just inclined hole (A1) position that central authorities locating plate (22) correspond work piece (A) is provided with oblique type and dodges hole (222), and inclined type dodges hole (222) and work piece (A) inclined hole (A1) coaxial setting to it dodges groove (211) and drilling tool and dodges groove (212) to set up the tool bit centre gripping portion to dodge hole (222) to correspond oblique type on well bridge plate (21).

4. The automatic numerical control milling machine for machining the inclined hole according to claim 3, wherein: the clamping and fixing device comprises two rotating cylinders (23) which are symmetrically arranged on two sides of a central positioning plate (22) and a rotating pressing plate (24) connected to a cylinder piston shaft, wherein the rotating cylinders (23) are fixedly arranged on a middle bridge plate (21) and drive the rotating pressing plate (24) to do reciprocating swing and front and back telescopic motion relative to a clamping surface (221), and an adjustable pressing part (241) capable of adjusting clamping force and/or clamping position according to the thickness of different workpieces (A) is arranged at the movable end of the rotating pressing plate (24).

5. The automatic numerical control milling machine for machining the inclined hole according to claim 3, wherein: the rotary workbench (2) further comprises a bridge bottom plate (25), a tailstock (26) arranged on the bridge bottom plate (25), a rotary body (27) and a driving device (28) for driving the rotary body (27) to rotate; the fixture body further comprises connecting clamping plates (29), the two ends of the middle bridge plate (21) are respectively provided with the connecting clamping plates (29), the two ends of the middle bridge plate (21) are respectively connected onto the tailstock (26) and the rotating body (27) through connecting chucks (210), and the rotating body (27) is controlled by the driving device (28) to drive the fixture body to axially rotate.

6. The automatic numerical control milling machine for opening inclined holes according to claim 2, characterized in that: the transfer manipulator (7) comprises a lifting frame (71), a switching cylinder (72), a clamp carrier plate (73) and two clamp heads (74); the fixture support plate (73) is hinged to the bottom of the lifting frame (71) through a revolute pair (75), one end of the switching cylinder (72) is hinged to the lifting frame (71), the other end of the switching cylinder is hinged to the fixture support plate (73), the fixture support plate (73) is driven to swing through the switching cylinder (72), and the two fixture heads (74) are arranged on the fixture support plate (73) respectively.

7. The automatic numerical control milling machine for opening inclined holes according to claim 1, wherein: the cutter tower moving device (4) comprises a transverse moving seat (401) and a longitudinal moving seat (402), and the power cutter tower device (3) is fixedly arranged on the longitudinal moving seat (402); a Z-axis lead screw guide rail pair (403) and a first driving motor (404) for driving the Z-axis lead screw guide rail pair (403) are arranged between the longitudinal moving seat (402) and the transverse moving seat (401), and the power tool turret device (3) is driven by the first driving motor (404) to lift up and down relative to the rotary worktable (2); an X-axis lead screw guide rail pair (405) and a second driving motor (406) for driving the X-axis lead screw guide rail pair (405) are arranged between the transverse moving seat (401) and the machine seat (1), and the power knife tower device (3) is driven by the second driving motor (406) to slide left and right relative to the rotary worktable (2).

8. The automatic numerical control milling machine for machining the inclined hole according to claim 1, wherein: the power turret device (3) comprises a turret mounting base plate (301), a plurality of rotating main shafts (302) which are vertically arranged and are arranged along the X-axis direction and a main shaft servo motor (303) for controlling the plurality of rotating main shafts (302) to rotate are arranged on the turret mounting base plate (301), a driving transmission piece (304) is arranged on a motor shaft of the main shaft servo motor (303), a driven transmission piece (305) connected with the driving transmission piece (304) is arranged on the rotating main shaft (302), and a cutter head clamping part (5) for mounting a drilling cutter, a reamer or a milling cutter is arranged at the bottom of the rotating main shaft (302).

9. The automatic numerical control milling machine for machining the inclined hole according to claim 6, wherein: the transfer manipulator (7) further comprises a sliding support (76), a sliding block is arranged on the sliding support (76), and a transverse sliding rail (601) which is in linear sliding fit with the sliding block is arranged on the supporting cross beam (6);

a third driving motor (77) is arranged on the sliding support (76), a transverse gear (771) is arranged on a motor shaft of the third driving motor (77), a transverse rack (602) meshed with the transverse gear (771) is arranged on the supporting beam (6), and the third driving motor (77) drives the sliding support (76) to move on the supporting beam (6) in a reciprocating manner;

the lifting frame (71) is provided with a vertical moving rack (79) meshed with the vertical moving gear (781) and a vertical moving slide rail (710) in linear sliding fit with the sliding support (76), and the fourth driving motor (78) drives the lifting frame (71) to lift up and down relative to the sliding support (76).

10. The automatic numerical control milling machine for opening inclined holes according to claim 1, wherein: a first waste unloading surface (101) inclined along the X-axis direction and a second waste unloading surface (102) inclined along the Y-axis direction are arranged on the machine base (1), the high position of the second waste unloading surface (102) is received at the low position of the first waste unloading surface (101), and a discharge opening (103) communicated with the low position of the second waste unloading surface (102) is arranged on the machine base (1); and a clamp supporting table (104) is arranged on the first waste unloading surface (101), and the rotary worktable (2) is arranged on the clamp supporting table (104).

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