CN224157803U

CN224157803U - A CNC milling machine with easy-to-change milling cutters

Info

Publication number: CN224157803U
Application number: CN202520876533.XU
Authority: CN
Inventors: 林养青
Original assignee: Dongguan Guanchi Cnc Machinery Co ltd
Current assignee: Dongguan Guanchi Cnc Machinery Co ltd
Priority date: 2025-05-07
Filing date: 2025-05-07
Publication date: 2026-04-24
Anticipated expiration: 2035-05-07

Abstract

This utility model relates to the field of CNC milling machine technology and discloses a CNC milling machine with easy-to-change milling cutters. It includes a frame, a first lead screw guide rail at the top of the frame, a second lead screw guide rail at the output end of the first lead screw guide rail, a mounting bracket at the output end of the second lead screw guide rail, a motor fixedly connected to the inner bottom of the mounting bracket, a mounting mechanism fixedly connected to the output end of the motor, and a third lead screw guide rail fixedly connected to the bottom of the frame. The output end of the third lead screw guide rail is equipped with a cutting table. This utility model ensures stability and safety during machining while enabling convenient milling cutter replacement, thereby reducing downtime and improving overall work efficiency.

Description

Numerical control milling machine convenient for milling cutter replacement

Technical Field

The utility model relates to the technical field of numerical control milling machines, in particular to a numerical control milling machine with a milling cutter convenient to replace.

Background

The numerical control milling machine is a machine tool for realizing automatic processing through a Computer Numerical Control (CNC) technology, and can accurately finish the processing tasks of milling, drilling, boring and the like of complex parts. Milling cutters of numerical control milling machines are tools which are arranged on a main shaft and used for cutting materials, and can be divided into a plurality of types such as a face milling cutter, an end milling cutter, a ball end milling cutter and the like according to processing requirements. The method is widely applied and is mainly used for efficiently processing precise parts (such as a die, aerospace parts, automobile parts and the like) in the manufacturing industry.

The numerical control milling machine is generally composed of a lathe bed, a main shaft, a workbench, a feeding system, a numerical control system, a cooling system and other main structures. The machine body provides support and stability, the main shaft is used for installing and driving the milling cutter to cut, the workbench can move along the X, Y, Z shaft to position a workpiece, the feeding system controls the motion of the workbench and the main shaft, the numerical control system is responsible for receiving a processing program and commanding each part to work in a coordinated manner, and the cooling system is used for reducing the cutting temperature and prolonging the service life of the cutter. The working principle is that a machining program is converted into an electric signal through a numerical control system, and a servo motor is driven to control the movement of a main shaft and a workbench, so that a milling cutter accurately cuts a workpiece according to a preset path, and efficient and high-precision machining is realized.

In the prior art, because the design of the traditional tool changing mechanism is complex, the tool changing process is time-consuming and easy to make mistakes due to the fact that the traditional tool changing mechanism is dependent on a special tool and manual operation, and the milling cutter is difficult to replace conveniently and quickly by a part of milling machine, so that the production efficiency is reduced, and especially in multi-tool machining requiring frequent tool changing, the time-consuming operation can drag down the overall production rhythm.

For this reason, in order to solve the above problems, a numerical control milling machine is proposed which is convenient for replacing the milling cutter.

Disclosure of utility model

In order to make up for the defects, the utility model provides a numerical control milling machine convenient for replacing milling cutters, and aims to solve the problem that part of milling machines in the prior art are difficult to replace milling cutters conveniently.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The numerical control milling machine comprises a frame, wherein a first screw guide rail is arranged at the top of the frame, a second screw guide rail is arranged at the output end of the first screw guide rail, a mounting frame is arranged at the output end of the second screw guide rail, a motor is fixedly connected to the inner bottom of the mounting frame, a mounting mechanism is fixedly connected to the output end of the motor, a third screw guide rail is fixedly connected to the bottom of the frame, a cutting table is arranged at the output end of the third screw guide rail, and a fixing mechanism is arranged at the top of the cutting table;

The mounting mechanism comprises a rotating disc, the top of the rotating disc is fixedly connected with the output end of the motor, the bottom of the motor is fixedly connected with a fixed disc, the inside of the fixed disc is slidably connected with a clamping assembly, the center of the fixed disc is detachably connected with a mounting column, and the bottom of the mounting column is fixedly connected with a milling cutter;

As a further description of the above technical solution:

the clamping assembly comprises a plurality of plug blocks, the outer sides of the plug blocks are connected with the inside of the fixed disc in a sliding mode, a plurality of limit grooves are formed in the inside of the fixed disc, the outer sides of the plug blocks are connected with the inside of the limit grooves in a sliding mode, and sliding columns are fixedly connected to the tops of the plug blocks;

As a further description of the above technical solution:

A plurality of arc grooves are formed in the rotating disc, and the outer sides of the sliding columns are connected to the inner parts of the arc grooves in a sliding mode;

As a further description of the above technical solution:

The outer side of the mounting column is provided with a plurality of clamping grooves, and one similar end of the plug-in block is detachably connected to the inner part of each clamping groove;

As a further description of the above technical solution:

The fixing mechanism comprises a fixing table, the bottom of the fixing table is detachably connected to the top of the cutting table, the bottom of the fixing table is detachably connected with a plurality of inserted pins, the bottom of each inserted pin is detachably connected to the top of the cutting table, the top of the fixing table is in threaded connection with a threaded rod, the bottom of the threaded rod is rotationally connected with a pressing plate, and the inside of the fixing table is fixedly connected with a pressing assembly;

As a further description of the above technical solution:

The pressing assembly comprises two sliding rods, two ends of each sliding rod are fixedly connected to the inside of the fixing table, sliding piles are connected to the outer sides of the two sliding rods in a sliding mode, a cam is connected to the top of each sliding pile in a rotating mode, and the convex surface of each cam is in contact with the top of each threaded rod;

As a further description of the above technical solution:

the bottom of the sliding pile is connected with two jackscrews in a threaded manner, and one end of each jackscrew is contacted with the outer side of the sliding rod;

As a further description of the above technical solution:

The inner side of the pressing plate is connected to the outer sides of the two sliding rods in a sliding mode, and the outer sides of the sliding piles are connected to the top of the fixed table in a sliding mode.

The utility model has the following beneficial effects:

1. According to the utility model, the milling cutter is inserted into the middle position of the fixed disc through the mounting column, the motor is utilized to drive the rotating disc to rotate to the preset position, the inserting block is driven to enter the clamping groove on the mounting column through the sliding of the arc-shaped groove and the limiting groove so as to realize quick clamping and positioning, and the reverse driving motor is utilized to realize quick release when the mounting mechanism needs to be replaced, so that the stability and the safety in the processing process are ensured, the downtime is reduced, and the integral working efficiency is improved.

2. According to the utility model, the fixing table is placed on the corresponding mounting hole of the cutting table and fixed through the pin, the workpiece is extruded and fixed vertically downwards under the combined action of the threaded rod and the pressing plate, and the position of the sliding pile is fixed through the cooperation of the sliding pile and the jackscrew so as to prevent accidental movement of the threaded rod, ensure the stability of the workpiece in the processing process, ensure the workpiece to be firmly fixed in the processing process, and effectively prevent the displacement or loosening of the processed workpiece caused by vibration or external force.

Drawings

FIG. 1 is a schematic perspective view of a numerical control milling machine with milling cutters convenient to replace;

Fig. 2 is a schematic structural view of a mounting mechanism of a numerically controlled milling machine for conveniently replacing milling cutters according to the present utility model;

FIG. 3 is an exploded view of a rotary disk of a numerical control milling machine for facilitating the replacement of milling cutters according to the present utility model;

Fig. 4 is a schematic structural view of a fixing mechanism of a numerically controlled milling machine for conveniently replacing milling cutters according to the present utility model;

fig. 5 is an enlarged view at a in fig. 2.

Legend description:

1. A frame; 2, a first screw guide rail, 3, a second screw guide rail, 4, a mounting rack, 5, a motor, 6, a mounting mechanism, 601, a rotating disc, 602, an arc-shaped groove, 603, a fixed disc, 604, a limit groove, 605, a sliding column, 606, an inserting block, 607, a mounting column, 608, a clamping groove, 609, a milling cutter, 7, a third screw guide rail, 8, a cutting table, 9, a fixing mechanism, 901, a fixing table, 902, a bolt, 903, a threaded rod, 904, a pressing plate, 905, a sliding rod, 906, a sliding pile, 907, a jackscrew, 908 and a cam.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, according to one embodiment of the present utility model, a numerically controlled milling machine for conveniently replacing a milling cutter includes a frame 1, and a first screw guide rail 2 is disposed at the top of the frame 1. The first screw guide rail 2 is designed to enable the milling machine to accurately move and position in the X-axis direction, so that basic support is provided for subsequent processing. The output end of the first screw guide rail 2 is provided with a second screw guide rail 3. The second screw guide rail 3 is added to enable the milling machine to move in the Y-axis direction, so that the machining range is further expanded. The output end of the second screw guide rail 3 is provided with a mounting frame 4. The mounting bracket 4 serves as a key component for connecting the motor 5 and the mounting mechanism 6, ensuring stability and rigidity of the entire system. The motor 5 is fixedly connected to the inner bottom of the mounting frame 4. The choice of motor 5 needs to take into account the power and the rotational speed to meet different processing requirements. The output end of the motor 5 is fixedly connected with a mounting mechanism 6. The design of the mounting mechanism 6 makes the replacement of the milling cutter 609 simple and quick, and improves the working efficiency. A third screw guide rail 7 is fixedly connected to the bottom of the frame 1. The introduction of the third screw guide rail 7 enables the milling machine to move in the Z-axis direction, so that the full coverage of the three-dimensional space is realized. The output end of the third screw guide rail 7 is provided with a cutting table 8. The cutting table 8 is used as a carrying platform of a workpiece, the stability and the precision of the cutting table directly influence the processing quality, and the top of the cutting table 8 is provided with a fixing mechanism 9.

Referring to fig. 2, 3 and 5, the mounting mechanism 6 includes a rotating disk 601, and the top of the rotating disk 601 is fixedly connected to the output end of the motor 5. The design of the rotating disc 601 enables the milling cutter 609 to rotate with the rotation of the motor 5, realizing the cutting function. A fixed disk 603 is fixedly connected to the bottom of the motor 5. The fixing plate 603 serves as a base member of the mounting mechanism 6, ensuring the stability of the entire structure. The inside of the fixed disk 603 is slidably connected with a clamping assembly. The design of the clamping assembly makes the installation and the disassembly of the milling cutter 609 simple and quick, and improves the working efficiency. The center of the fixing plate 603 is detachably connected with a mounting post 607. The design of the mounting post 607 enables the milling cutter 609 to be quickly positioned and secured, reducing replacement time. The bottom of the mounting post 607 is fixedly connected with a milling cutter 609. The milling cutter 609 is selected according to the machining materials and process requirements to ensure machining quality.

The clamping assembly comprises a plurality of plug-in blocks 606, and the outer sides of the plug-in blocks 606 are connected to the inside of the fixed disc 603 in a sliding mode. The design of the insert block 606 enables the milling cutter 609 to be positioned and secured quickly, reducing replacement time. A plurality of limiting grooves 604 are formed in the fixing plate 603. The design of the limiting slot 604 ensures stability and accuracy of the plug 606 during sliding. The outer side of the plug 606 is slidably connected to the inside of the limit groove 604. This design enables the insert 606 to slide precisely inside the fixed disk 603, ensuring a stable installation of the milling cutter 609. A plurality of clamping grooves 608 are formed on the outer side of the mounting post 607. The design of the clamping groove 608 enables the plug block 606 to be fast clamped in, so that the fast fixing of the milling cutter 609 is realized. The proximal end of the plug 606 is removably attached to the interior of the card slot 608. This way of attachment makes replacement of the milling cutter 609 simple and quick, improving the working efficiency. A sliding column 605 is fixedly connected to the top of the plug-in block 606. The design of the sliding column 605 enables the plug-in block 606 to slide in the arc-shaped groove 602 of the rotating disc 601, so that the milling cutter 609 can be rapidly positioned. A plurality of arc grooves 602 are formed in the rotating disk 601. The design of the arcuate slot 602 enables the sliding post 605 to slide precisely within the rotating disc 601, ensuring stable installation of the milling cutter 609. The outside of the sliding column 605 is slidably coupled to the inside of the arcuate slot 602. This design enables the sliding post 605 to slide precisely within the rotating disk 601, ensuring stable installation of the milling cutter 609.

Referring to fig. 1 and 4, the fixing mechanism 9 includes a fixing table 901, and the bottom of the fixing table 901 is detachably connected to the top of the cutting table 8. The fixed stage 901 is designed so that the workpiece can be firmly fixed to the cutting stage 8, preventing movement or vibration of the workpiece during processing. A plurality of pins 902 are detachably connected to the bottom of the stationary stage 901. The design of the bayonet 902 allows the fixture 901 to be quickly positioned and secured, reducing installation time. The bottom of the bayonet 902 is detachably connected to the top of the cutting table 8. This way of attachment enables the stationary platen 901 to be quickly secured to the cutting table 8, improving the efficiency of operation. A threaded rod 903 is screwed to the top of the stationary stage 901. The threaded rod 903 is designed to enable vertical movement of the platen 904 to effect compaction of the workpiece. A platen 904 is rotatably connected to the bottom of the threaded rod 903. The design of the platen 904 allows the workpiece to be uniformly compressed, avoiding deformation or damage to the workpiece due to excessive local pressure. The inside fixedly connected with of fixed station 901 compresses tightly the subassembly. The design of the hold down assembly enables the workpiece to be firmly secured to the cutting table 8, preventing movement or vibration of the workpiece during processing.

The pressing assembly comprises two sliding rods 905, and two ends of each sliding rod 905 are fixedly connected to the inside of the fixing table 901. The design of the slide bar 905 enables the press plate 904 to slide precisely in the vertical direction, ensuring stable pressing of the workpiece. The inner side of the platen 904 is slidably coupled to the outer sides of two slide bars 905. This design allows the platen 904 to slide precisely on the slide bar 905, ensuring stable compaction of the workpiece. Slide piles 906 are slidably connected to the outer sides of the two slide bars 905. The design of the slide stake 906 enables the cam 908 to move up and down with the rotation of the threaded rod 903 to effect compaction of the workpiece. The outside of the slide pile 906 is slidably attached to the top of the stationary table 901. This design enables the slide stake 906 to slide precisely on top of the stationary platen 901, ensuring stable compaction of the workpiece. A cam 908 is rotatably coupled to the top of the slide post 906. The design of the cam 908 enables the threaded rod 903 to move up and down, achieving compaction of the workpiece. The convex surface of the cam 908 contacts the top of the threaded rod 903. This design allows the cam 908 to press against the top of the threaded rod 903 by its convex surface, preventing the threaded rod 903 from accidentally moving during processing. The bottom of the slide pile 906 is threaded with two jackscrews 907. The design of the jackscrew 907 enables the slide stake 906 to be secured to the slide bar 905 by way of increased friction, ensuring stable compaction of the work piece. One end of the jackscrew 907 is in contact with the outside of the slide bar 905. This design allows the jackscrew 907 to increase friction by contact with the sliding bar 905, ensuring stable fixation of the slide stake 906.

The working principle is that a fixed table 901 is placed on a mounting hole corresponding to a cutting table 8 according to the shape and the size of a workpiece to be processed, a bolt nail 902 is inserted into the mounting hole to stabilize the fixed table 901, then a threaded rod 903 is rotated, the threaded rod 903 rotates, meanwhile, a pressing plate 904 moves vertically downwards to squeeze and fix the workpiece due to the limiting effect of a sliding rod 905, a sliding pile 906 can slide on two sliding rods 905 by unscrewing a jackscrew 907, a cam 908 can synchronously move up and down along with the threaded rod 903, the jackscrew 907 is screwed into the sliding pile 906 to squeeze the jackscrew with the sliding rod 905, the position of the sliding pile 906 is fixed in a friction force increasing mode, a cam 908 is rotated, and the top of the threaded rod 903 is squeezed by the convex surface of the cam 908, so that the problem that the workpiece is fixed unstably due to accidental movement of the threaded rod 903 caused by vibration and the like generated in the working process of a milling cutter 609 is prevented.

Then the mounting post 607 on the milling cutter 609 is inserted into the middle of the fixed disc 603, the motor 5 is started again, the motor 5 operates to drive the rotating disc 601 to rotate to a preset position, so that the sliding post 605 slides along the arc-shaped groove 602 under the action of the arc-shaped groove 602, the plug-in block 606 is driven to slide along the limit groove 604 in the fixed disc 603 and is clamped into the clamping groove 608 on the mounting post 607, and quick clamping and positioning are realized. When the mounting mechanism 6 needs to be replaced, the milling cutter 609 can be loosened by the reverse rotation of the plug-in block 606 through the reverse rotation of the reverse rotation motor 5, so that the mounting post 607 is separated from the fixed disk 603, and the milling cutter 609 is convenient to replace.

After the motor 5 operates and the milling cutter 609 is engaged with the joint, the motor 5 continues to operate to enable the milling cutter 609 to start rotating, so that the milling cutter 609 starts working, and the milling cutter 609 can accurately process a workpiece according to requirements through the driving action of the first lead screw guide rail 2, the second lead screw guide rail 3 and the third lead screw guide rail 7.

It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present utility model.

Claims

1. The numerical control milling machine is convenient for replacing milling cutters and comprises a machine frame (1), and is characterized in that a first screw guide rail (2) is arranged at the top of the machine frame (1), a second screw guide rail (3) is arranged at the output end of the first screw guide rail (2), a mounting frame (4) is arranged at the output end of the second screw guide rail (3), a motor (5) is fixedly connected to the inner bottom of the mounting frame (4), a mounting mechanism (6) is fixedly connected to the output end of the motor (5), a third screw guide rail (7) is fixedly connected to the bottom of the machine frame (1), a cutting table (8) is arranged at the output end of the third screw guide rail (7), and a fixing mechanism (9) is arranged at the top of the cutting table (8);

The mounting mechanism (6) comprises a rotating disc (601), the top of the rotating disc (601) is fixedly connected with the output end of the motor (5), the bottom of the motor (5) is fixedly connected with a fixed disc (603), the inside of the fixed disc (603) is slidably connected with a clamping assembly, the center of the fixed disc (603) is detachably connected with a mounting column (607), and the bottom of the mounting column (607) is fixedly connected with a milling cutter (609).

2. The numerical control milling machine convenient for replacing milling cutters according to claim 1, wherein the clamping assembly comprises a plurality of inserting blocks (606), the outer sides of the inserting blocks (606) are slidably connected to the inside of the fixed disc (603), a plurality of limiting grooves (604) are formed in the inside of the fixed disc (603), the outer sides of the inserting blocks (606) are slidably connected to the inside of the limiting grooves (604), and sliding columns (605) are fixedly connected to the tops of the inserting blocks (606).

3. The numerical control milling machine with the milling cutter convenient to replace according to claim 2, wherein a plurality of arc grooves (602) are formed in the rotary disc (601), and the outer side of the sliding column (605) is connected with the inner portion of the arc grooves (602) in a sliding mode.

4. The numerical control milling machine with the milling cutter convenient to replace according to claim 2, wherein a plurality of clamping grooves (608) are formed in the outer side of the mounting column (607), and the similar end of the plug block (606) is detachably connected to the inner portion of the clamping groove (608).

5. The numerical control milling machine convenient for replacing milling cutters according to claim 1, wherein the fixing mechanism (9) comprises a fixing table (901), the bottom of the fixing table (901) is detachably connected to the top of the cutting table (8), a plurality of inserting pins (902) are detachably connected to the bottom of the fixing table (901), the bottom of each inserting pin (902) is detachably connected to the top of the cutting table (8), a threaded rod (903) is connected to the top of the fixing table (901) in a threaded mode, a pressing plate (904) is rotatably connected to the bottom of the threaded rod (903), and a pressing assembly is fixedly connected to the inside of the fixing table (901).

6. The numerical control milling machine convenient for replacing milling cutters according to claim 5, wherein the pressing assembly comprises two sliding rods (905), two ends of the sliding rods (905) are fixedly connected to the inside of the fixed table (901), sliding piles (906) are slidably connected to the outer sides of the two sliding rods (905), cams (908) are rotatably connected to the tops of the sliding piles (906), and the convex surfaces of the cams (908) are in contact with the tops of the threaded rods (903).

7. The numerical control milling machine for conveniently replacing milling cutters according to claim 6, wherein the bottom of the sliding pile (906) is in threaded connection with two jackscrews (907), and one end of each jackscrew (907) is in contact with the outer side of the sliding rod (905).

8. The numerical control milling machine for facilitating milling cutter replacement according to claim 6, wherein the inner side of the pressing plate (904) is slidably connected to the outer sides of the two sliding rods (905), and the outer sides of the sliding piles (906) are slidably connected to the top of the fixed table (901).