Numerical control milling machine milling cutter assembly capable of automatically selecting cutter heads

Abstract

The utility model discloses a numerical control milling machine milling cutter assembly capable of automatically selecting cutter heads. The lower end of the working bin is rotationally connected with a movable shaft, the lower end of the movable shaft is connected with a fixing base through a screw, the left end and the right end of the fixing base are connected with an adjusting base through adjusting parts, and the end, away from the working bin, of the adjusting base is provided with a clamping opening. The lower end of the tool magazine is rotationally connected with a rotating disc, round holes which are evenly distributed are formed in the rotating disc, pneumatic clamps are arranged in the round holes, tool bases are arranged in the pneumatic clamps, milling cutters are arranged at the lower ends of the tool bases, and the pneumatic clamps communicate with an external air pump through guide pipes. According to the utility model, the specifications of tool changing parts can be quickly adjusted, the tool bit automatic selection requirements of different numerical control milling machines can be effectively met, and the automatic tool changing efficiency of the milling cutter assembly is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control milling machines, in particular to a milling cutter assembly of a numerical control milling machine capable of automatically selecting a cutter head. Background Art

[0002] The milling cutter assembly of a CNC milling machine is an important part of the CNC milling machine. It is responsible for performing cutting tasks and achieving precise processing of workpieces. This assembly usually includes multiple key components such as the tool holder, cutting edge, auxiliary edge, cutting fluid system, etc. These components work together to complete the milling process. The milling cutter assembly of a CNC milling machine that automatically selects the tool head is a key part of the CNC milling machine. It is responsible for automatically selecting and replacing tools during the processing process to achieve efficient and precise processing. This assembly usually includes a tool magazine, tool changing components and a corresponding control system.

[0003] The existing milling cutter assemblies of some CNC milling machines that automatically select cutter heads adopt a method of fixing the specifications of tool changing parts, which may affect the degree to which the automatic selection requirements of cutter heads of different CNC milling machines are met, and may further affect the automatic selection and tool changing efficiency of the milling cutter assembly. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a CNC milling machine cutter assembly with automatic cutter head selection, which can realize rapid adjustment of the specifications of tool changing parts and can be effectively adapted to the automatic cutter head selection requirements of different CNC milling machines, effectively improve the automatic tool changing efficiency of the milling cutter assembly, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a CNC milling machine cutter assembly with automatic cutter head selection, comprising a working chamber;

[0006] The lower end of the working bin is rotatably connected to a movable shaft, the lower end of the movable shaft is connected to a fixed seat by a screw, the left and right ends of the fixed seat are connected to the adjusting seat by adjusting parts, the end of the adjusting seat away from the working bin is provided with a clamping port, the right end of the working bin is fixedly connected to a tool magazine by a support, the lower end of the tool magazine is rotatably connected to a turntable, the interior of the turntable is provided with evenly distributed circular holes, the interior of the circular holes is provided with a pneumatic clamp, the interior of the pneumatic clamp is provided with a tool seat, the lower end of the tool seat is provided with a milling cutter, and the pneumatic clamp is connected to an external air pump through a conduit;

[0007] It also includes a PLC controller, which is located on the left side of the working chamber. The input end of the external air pump is electrically connected to the output end of the PLC controller, and the input end of the PLC controller is electrically connected to the external power supply.

[0008] Furthermore, the adjustment components include a screw, a slide, a guide rod and a knob. The screw is rotatably connected to the left and right ends of the fixed seat respectively, the end of the screw away from the working chamber is threadedly connected to the laterally adjacent adjustment seat, the slide is symmetrically fixedly connected to the relative inner surfaces of the adjustment seat, the guide rod is symmetrically fixedly connected to the left and right ends of the fixed seat, the outer surfaces of the guide rod are slidably connected to the inside of the laterally adjacent slide, and the knob is fixedly connected to the end of the screw close to the center of the fixed seat to achieve spacing adjustment of the adjustment seat.

[0009] Furthermore, a circular groove is provided at one end of the clamping opening close to the fixing seat, a spring is fixedly connected inside the circular groove, and a locking column is fixedly connected at one end of the spring away from the fixing seat to achieve locking of the tool seat.

[0010] Furthermore, a fixed frame is fixedly connected to the interior of the working chamber, a worm wheel is rotatably connected to the upper end of the fixed frame, a worm is rotatably connected to the left end of the working chamber, the worm is meshingly connected to the worm wheel, rib grooves are provided at both left and right ends of the movable shaft, ribs are fixedly connected to the interior of the worm wheel, the ribs are slidably connected to laterally adjacent rib grooves, a second motor is provided at the left end of the front surface of the working chamber, an output shaft of the second motor is fixedly connected to the front end of the worm, a telescopic cylinder is provided at the upper end of the working chamber, the lower end of the piston rod of the telescopic cylinder is rotatably connected to the upper end of the movable shaft, the air port of the telescopic cylinder is connected to the external air pump through an air pipe, the input end of the second motor is electrically connected to the output end of the PLC controller, so as to realize the tool head replacement work.

[0011] Furthermore, a motor 1 is provided at the upper end of the tool magazine, the lower end of the output shaft of the motor 1 is fixedly connected to a driving gear, the upper end of the turntable is fixedly connected to a rotating shaft, the upper end of the rotating shaft is rotatably connected to the top wall of the tool magazine, the middle part of the rotating shaft is fixedly connected to a driven gear, the driving gear and the driven gear are meshingly connected, the input end of the motor 1 is electrically connected to the output end of the PLC controller, so as to provide driving force for realizing the automatic selection of the tool head.

[0012] Furthermore, an observation window is provided at the front end of the tool magazine to facilitate observation of the milling cutter.

[0013] Furthermore, it also includes a mounting plate, which is fixedly connected to the rear ends of the working bin and the tool magazine respectively, and the interior of the mounting plate is provided with evenly distributed mounting holes, which effectively ensures the smooth progress of the automatic selection of the tool head.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The personnel turn the knobs in sequence according to the specifications of the CNC milling machine. The rotation of the knobs drives the laterally adjacent screws to rotate, so that the adjusting seats move away from the center of the fixed seat. At the same time, the guide rods slide inside the laterally adjacent sliding openings to provide guidance for the movement of the adjusting seats. The relative movement of the adjusting seats drives the laterally adjacent clamping openings to move away from the fixed seat, thereby adjusting the spacing of the clamping openings. This can achieve rapid adjustment of the specifications of tool changing parts and can effectively adapt to the automatic selection requirements of tool heads of different CNC milling machines, effectively improving the automatic tool changing efficiency of the milling cutter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure inside the utility model;

[0018] Figure 3 This is an enlarged structural diagram of the utility model at A;

[0019] Figure 4 It is a schematic diagram of the enlarged structure of point B of the utility model.

[0020] In the figure: 1 working chamber, 2 movable shaft, 3 fixed seat, 4 adjusting parts, 41 screw, 42 sliding mouth, 43 guide rod, 44 knob, 5 adjusting seat, 6 clamping mouth, 7 tool magazine, 8 turntable, 9 round hole, 10 pneumatic clamp, 11 tool seat, 12 milling cutter, 13 rotating shaft, 14 driven gear, 15 driving gear, 16 motor 1, 17 fixed frame, 18 worm gear, 19 worm, 20 telescopic cylinder, 21 round groove, 22 spring, 23 locking column, 24 motor 2, 25 mounting plate, 26 PLC controller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 This embodiment provides a technical solution: a CNC milling machine cutter assembly with automatic cutter head selection, including a working chamber 1; and also including a PLC controller 26, the PLC controller 26 is located on the left side of the working chamber 1, the input end of the external air pump is electrically connected to the output end of the PLC controller 26, and the input end of the PLC controller 26 is electrically connected to the external power supply.

[0023] Among them, the lower end of the working chamber 1 is rotatably connected to the movable shaft 2, the lower end of the movable shaft 2 is connected to the fixed seat 3 through a screw, the left and right ends of the fixed seat 3 are connected to the adjusting seat 5 through an adjusting component 4, and the end of the adjusting seat 5 away from the working chamber 1 is provided with a clamping port 6, the right end of the working chamber 1 is fixedly connected to the tool magazine 7 through a pillar, the front end of the tool magazine 7 is provided with an observation window, the lower end of the tool magazine 7 is rotatably connected to the turntable 8, the interior of the turntable 8 is provided with evenly distributed circular holes 9, the interior of the circular holes 9 is provided with a pneumatic clamp 10, the interior of the pneumatic clamp 10 is provided with a tool seat 11, the lower end of the tool seat 11 is provided with a milling cutter 12, and the pneumatic clamp 10 is connected to an external air pump through a conduit.

[0024] Wherein: the adjusting component 4 includes a screw 41, a slide 42, a guide rod 43 and a knob 44, the screw 41 is rotatably connected to the left and right ends of the fixed seat 3 respectively, the end of the screw 41 away from the working chamber 1 is threadedly connected to the laterally adjacent adjusting seat 5, the slide 42 is symmetrically fixedly connected to the relative inner surfaces of the adjusting seat 5 respectively, the guide rod 43 is symmetrically fixedly connected to the left and right ends of the fixed seat 3, the outer surface of the guide rod 43 is slidably connected to the inside of the laterally adjacent slide 42, the knob 44 is fixedly connected to the end of the screw 41 close to the center of the fixed seat 3, according to the specifications of the CNC milling machine, the knob 44 is rotated in sequence, and the rotation of the knob 44 drives the laterally adjacent screw 41 to rotate, so that the adjusting seat 5 moves in the direction away from the center of the fixed seat 3, and at the same time, the guide rod 43 slides inside the laterally adjacent slide 42 to provide a guiding effect for the movement of the adjusting seat 5, and the relative movement of the adjusting seat 5 drives the laterally adjacent clamping openings 6 to move in the direction away from the fixed seat 3, so as to achieve the spacing adjustment of the clamping openings 6.

[0025] Wherein: the end of the clamping opening 6 close to the fixing seat 3 is provided with a circular groove 21, the inside of the circular groove 21 is fixedly connected with a spring 22, and the end of the spring 22 away from the fixing seat 3 is fixedly connected with a locking column 23;

[0026] Among them: the interior of the working chamber 1 is fixedly connected to a fixing frame 17, the upper end of the fixing frame 17 is rotatably connected to a worm wheel 18, the left end of the working chamber 1 is rotatably connected to a worm 19, the worm 19 is meshingly connected to the worm wheel 18, the left and right ends of the movable shaft 2 are provided with rib grooves, the interior of the worm wheel 18 is fixedly connected to ribs, and the ribs are slidably connected to the laterally adjacent rib grooves.

[0027] Among them, a motor 24 is provided at the left end of the front surface of the working chamber 1, and the output shaft of the motor 24 is fixedly connected to the front end of the worm 19. A telescopic cylinder 20 is provided at the upper end of the working chamber 1. The lower end of the piston rod of the telescopic cylinder 20 is rotatably connected to the upper end of the movable shaft 2. The air port of the telescopic cylinder 20 is connected to the external air pump through an air pipe, and the input end of the motor 24 is electrically connected to the output end of the PLC controller 26.

[0028] Among them, a motor 16 is arranged at the upper end of the tool magazine 7, a driving gear 15 is fixedly connected to the lower end of the output shaft of the motor 16, a rotating shaft 13 is fixedly connected to the upper end of the turntable 8, the upper end of the rotating shaft 13 is rotatably connected to the top wall of the tool magazine 7, a driven gear 14 is fixedly connected to the middle part of the rotating shaft 13, the driving gear 15 and the driven gear 14 are meshed and connected, the input end of the motor 16 is electrically connected to the output end of the PLC controller 26; it also includes a mounting plate 25, the mounting plate 25 is respectively fixedly connected to the rear ends of the working chamber 1 and the tool magazine 7, and the interior of the mounting plate 25 is provided with evenly distributed mounting holes.

[0029] The working principle of the utility model is as follows:

[0030] During operation, the personnel use bolts to stably connect the mounting holes inside the mounting plate 25 with the threaded holes in the working area, thereby achieving stable installation of the working chamber 1, the tool magazine 7 and other mechanisms. After the installation is stable, the personnel turn the knobs 44 in sequence according to the specifications of the CNC milling machine. The rotation of the knobs 44 drives the laterally adjacent screw rods 41 to rotate, so that the adjustment seats 5 move in a direction away from the center of the fixed seat 3. At the same time, the guide rods 43 slide inside the laterally adjacent sliding openings 42 to provide a guide for the movement of the adjustment seats 5. The relative movement of the adjustment seats 5 drives the laterally adjacent clamping openings 6 to move in a direction away from the fixed seat 3, thereby achieving the spacing adjustment of the clamping openings 6.

[0031] When the clamping mouth 6 moves to the desired position, the personnel stops turning the knob 44, and then the PLC controller 26 realizes the operation of the motor 16. The output shaft of the motor 16 rotates to drive the driving gear 15 to rotate, and then drives the driven gear 14 to rotate, and then drives the rotating shaft 13 to rotate. The rotation of the rotating shaft 13 drives the rotating disk 8 to rotate, and the rotation of the rotating disk 8 drives the circular hole 9 to rotate, and then drives the tool holder 11 to rotate through the pneumatic clamp 10, and finally realizes the rotation of the milling cutter 12;

[0032] When the required milling cutter 12 rotates to the specified position, the PLC controller 26 turns off the motor 16 and realizes the operation of the external air pump. The external air pump shrinks the piston rod of the telescopic cylinder 20, causing the movable shaft 2 to slide upward, and the ribs slide inside the corresponding rib grooves. The movable shaft 2 slides upward to drive the fixed seat 3 to move upward, and then drives the adjustment seat 5 to move upward. The tool seat 11 at the specified position enters the inside of the clamping port 6 on the right side. At the same time, the outer wall of the tool seat 11 pushes the vertically adjacent locking column 23 to slide into the corresponding circular groove 21. The spring 22 adjacent to the tool holder 11 is moved to elastically compress, and the tool holder 11 is stably clamped under the action of the elastic force. At the same time, the external air pump causes the pneumatic clamp 10 in the designated area to stop clamping the adjacent tool holder 11. At the same time, the clamping port 6 on the left side clamps the tool holder 11 to be replaced of the external electric spindle. Then, the external air pump causes the piston rod of the telescopic cylinder 20 to extend, thereby causing the movable shaft 2 to move downward, thereby driving the fixed seat 3 to move downward, and then driving the two tool holders 11 to be replaced to move downward through the adjustment seat 5.

[0033] When it moves down to the specified height, the personnel realize the operation of motor 24 through PLC controller 26. The output shaft of motor 24 rotates to drive the worm 19 to rotate, and then drives the worm wheel 18 to rotate. The rotation of worm wheel 18 drives the movable shaft 2 to rotate through the ribs. The movable shaft 2 rotates 180 degrees, and the adjustment seat 5 rotates 180 degrees around the central axis of the movable shaft 2. Then, PLC controller 26 realizes the contraction of the piston rod of telescopic cylinder 20 through an external air pump, installs the required tool seat 11 to the lower end of the external electric spindle, and moves the replaced tool seat 11 to the inside of the vertically adjacent circular hole 9. The external air pump realizes the operation of pneumatic clamp 10 to clamp the tool seat 11, thereby realizing the automatic selection of tool head of CNC milling machine.

[0034] It is worth noting that the motor 16 disclosed in the above embodiment can be a C5-I three-phase asynchronous motor, the motor 24 can be a DT86BLF220-4830 motor, the PLC controller 26 can be a 6ES7211-0AA23-0XB0 programmable controller, and the PLC controller 26 controls the motor 16, the motor 24 and the external air pump using methods commonly used in the prior art.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A CNC milling cutter assembly with automatic cutter head selection, characterized in that: The invention comprises a working chamber (1); The lower end of the working chamber (1) is rotatably connected to a movable shaft (2), the lower end of the movable shaft (2) is connected to a fixed seat (3) by means of screws, the left and right ends of the fixed seat (3) are connected to the adjusting seat (5) by means of adjusting components (4), the end of the adjusting seat (5) away from the working chamber (1) is provided with a clamping opening (6), the right end of the working chamber (1) is fixedly connected to a tool magazine (7) by means of a support, the lower end of the tool magazine (7) is rotatably connected to a turntable (8), the interior of the turntable (8) is provided with evenly distributed circular holes (9), the interior of the circular holes (9) is provided with a pneumatic clamp (10), the interior of the pneumatic clamp (10) is provided with a tool seat (11), the lower end of the tool seat (11) is provided with a milling cutter (12), and the pneumatic clamp (10) is connected to an external air pump via a conduit; It also includes a PLC controller (26), which is located on the left side of the working chamber (1), the input end of the external air pump is electrically connected to the output end of the PLC controller (26), and the input end of the PLC controller (26) is electrically connected to an external power supply.

2. The CNC milling cutter assembly for automatically selecting a cutter head according to claim 1, characterized in that: The adjusting component (4) comprises a screw (41), a slide (42), a guide rod (43) and a knob (44); the screw (41) is rotatably connected to the left and right ends of the fixing seat (3); one end of the screw (41) away from the working chamber (1) is threadedly connected to the laterally adjacent adjusting seat (5); the slide (42) is symmetrically fixedly connected to the relative inner surfaces of the adjusting seat (5); the guide rod (43) is symmetrically fixedly connected to the left and right ends of the fixing seat (3); the outer surface of the guide rod (43) is slidably connected to the inside of the laterally adjacent slide (42); and the knob (44) is fixedly connected to one end of the screw (41) close to the center of the fixing seat (3).

3. The CNC milling machine cutter assembly with automatic cutter head selection according to claim 1, characterized in that: The clamping opening (6) is provided with a circular groove (21) at one end close to the fixing seat (3), a spring (22) is fixedly connected inside the circular groove (21), and a locking column (23) is fixedly connected to one end of the spring (22) away from the fixing seat (3).

4. The CNC milling cutter assembly for automatically selecting a cutter head according to claim 1, characterized in that: The working chamber (1) is fixedly connected with a fixed frame (17) inside, and the upper end of the fixed frame (17) is rotatably connected with a worm gear (18). The left end of the working chamber (1) is rotatably connected with a worm (19), and the worm gear (19) is meshingly connected with the worm gear (18). The left and right ends of the movable shaft (2) are provided with rib grooves, and the inside of the worm gear (18) is fixedly connected with ribs, and the ribs are slidably connected with the rib grooves adjacent to each other in the transverse direction. The left end of the front surface of the working chamber (1) is provided with a second motor (24), and the output shaft of the second motor (24) is fixedly connected with the front end of the worm gear (19). The upper end of the working chamber (1) is provided with a telescopic cylinder (20), and the lower end of the piston rod of the telescopic cylinder (20) is rotatably connected with the upper end of the movable shaft (2). The air port of the telescopic cylinder (20) is connected with an external air pump through an air pipe, and the input end of the second motor (24) is electrically connected with the output end of the PLC controller (26).

5. The CNC milling cutter assembly for automatically selecting a cutter head according to claim 1, characterized in that: A motor (16) is arranged at the upper end of the tool magazine (7), the lower end of the output shaft of the motor (16) is fixedly connected to a driving gear (15), the upper end of the turntable (8) is fixedly connected to a rotating shaft (13), the upper end of the rotating shaft (13) is rotatably connected to the top wall of the tool magazine (7), the middle part of the rotating shaft (13) is fixedly connected to a driven gear (14), the driving gear (15) and the driven gear (14) are meshedly connected, and the input end of the motor (16) is electrically connected to the output end of the PLC controller (26).

6. The CNC milling cutter assembly for automatically selecting a cutter head according to claim 1, characterized in that: The front end of the tool magazine (7) is provided with an observation window.

7. The CNC milling cutter assembly for automatically selecting a cutter head according to claim 1, characterized in that: It also comprises a mounting plate (25), wherein the mounting plate (25) is fixedly connected to the rear ends of the working chamber (1) and the tool magazine (7), respectively, and evenly distributed mounting holes are arranged inside the mounting plate (25).

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