阅读说明：本技术 一种航空发动机叶片铣削的换刀装置 (Tool changing device for milling aero-engine blade ) 是由 吴行飞 吕桂芳 邓崛华 邓光亚 唐笙富 于 2021-10-09 设计创作，主要内容包括：本申请涉及一种航空发动机叶片铣削的换刀装置,涉及铣床换刀技术,其用于与铣床配合使用,所述铣床上设有刀臂,刀臂上安装有刀座；所述换刀装置包括基座和刀库座；所述刀库座转动安装至所述基座；所述基座上设有用于驱动所述刀库座转动的驱动机构；所述刀库座上设置有多个存刀区,所述存刀区内设有铣刀,所述铣刀上同轴固接有安装座；所述存刀区内还设有换刀轨道,所述安装座滑移连接至所述换刀轨道；所述刀库座上设有换刀区；所述换刀区内所述换刀轨道的长度方向与所述刀库座横向运行方向相同；所述刀座上设有与所述安装座配合使用的磁铁；本申请具有实现铣刀自动更换,降低工作人劳动强度,提高换刀效率,进而提高航空发动机叶片生产效率的优点。(The application relates to a tool changing device for milling an aircraft engine blade, which relates to a milling machine tool changing technology and is used in cooperation with a milling machine, wherein a tool arm is arranged on the milling machine, and a tool apron is arranged on the tool arm; the tool changing device comprises a base and a tool magazine seat; the tool magazine base is rotatably mounted to the base; the base is provided with a driving mechanism for driving the tool magazine base to rotate; the tool magazine base is provided with a plurality of tool storage areas, milling cutters are arranged in the tool storage areas, and mounting bases are coaxially and fixedly connected to the milling cutters; a tool changing track is further arranged in the tool storage area, and the mounting seat is connected to the tool changing track in a sliding manner; the tool changer seat is provided with a tool changing area; the length direction of the tool changing track in the tool changing area is the same as the transverse running direction of the tool magazine seat; the tool apron is provided with a magnet matched with the mounting seat; this application has the advantage that realizes that milling cutter is automatic to be changed, reduces staff intensity of labour, improves tool changing efficiency, and then improves aeroengine blade production efficiency.)

1. A tool changer for milling an aircraft engine blade is used in cooperation with a milling machine (1), wherein a tool arm (13) is arranged on the milling machine (1), and a tool apron (14) is arranged on the tool arm (13); the method is characterized in that: the tool changing device comprises a base (2) and a tool magazine seat (3);

the tool magazine base (3) is rotatably mounted to the base (2); the base (2) is provided with a driving mechanism for driving the tool magazine base (3) to rotate; the base (2) is used for driving the tool magazine base (3) to move transversely and longitudinally;

the tool magazine seat (3) is provided with a plurality of tool storage areas (31), and the tool storage areas (31) are sequentially arranged around the axis of the tool magazine seat (3); a milling cutter (4) is arranged in the cutter storage area (31), and a mounting seat (41) is coaxially and fixedly connected to the milling cutter (4); a tool changing track (331) is further arranged in the tool storage area (31), and the mounting seat (41) is connected to the tool changing track (331) in a sliding manner;

a tool changing area (32) is arranged on the tool magazine seat (3); the length direction of the tool changing track (331) in the tool changing area (32) is the same as the transverse running direction of the tool magazine seat (3);

the tool apron (14) is provided with a magnet (141) matched with the mounting seat (41) for use;

the base (2) drives the milling cutter (4) at the cutter changing area (32) to move and is fixedly adsorbed to the magnet (141), and the base (2) drives the tool magazine base (3) to move along the transverse direction until the tool changing track (331) is separated from the mounting base (41);

the base (2) drives the tool magazine base (3) to move, so that the mounting base (41) on the tool apron (14) is connected to the tool changing track (331) in the tool changing area (32) in a sliding mode, the base (2) drives the tool magazine base (3) to move longitudinally, and the milling cutter (4) is separated from the tool apron (14).

2. The tool changer for milling the blades of an aircraft engine according to claim 1, characterized in that: the tool magazine seat (3) is of a circular plate-shaped structure.

3. A tool changer for milling of aircraft engine blades according to claim 1 or 2, characterized in that: the tool magazine seat (3) is provided with a tool storage cavity (33) in the tool storage area (31), and the tool changing track (331) is arranged in the tool storage cavity (33).

4. A tool changer for milling of aircraft engine blades according to claim 3, characterized in that: the tool changing track (331) is a sliding groove arranged on the side wall of the tool storage cavity (33).

5. The tool changer for milling the blades of an aircraft engine according to claim 1, characterized in that: the cross section of the installation seat (41) is circular, a circular convex edge (413) is integrally arranged on the periphery of the installation seat (41), and the convex edge (413) is connected to the tool changing rail (331) in a sliding mode.

6. A tool changer for milling of aircraft engine blades according to claim 5, characterized in that: the mounting seat (41) comprises a base part (411) and a connecting part (412) which are integrally arranged;

the tool apron (14) is provided with a connecting groove (142) matched with the connecting part (412), and the connecting part (412) is inserted into the connecting groove (142).

7. The tool changer for milling of an aircraft engine blade according to claim 6, characterized in that: a limiting groove (1421) with a polygonal cross section is arranged on the cutter holder (14);

a limiting rod (414) matched with the limiting groove (1421) is fixedly connected to the mounting seat (41);

the limiting rod (414) is connected into the limiting groove (1421) in a sliding manner.

8. The tool changer for milling of an aircraft engine blade according to claim 7, characterized in that: the limiting rod (414) is coaxial with the mounting seat (41), and the limiting groove (1421) is coaxial with the tool apron (14).

9. The tool changer for milling of an aircraft engine blade according to claim 8, characterized in that: the mounting seat (41) is provided with a buffer groove (4121), and the limiting rod (414) is connected into the buffer groove (4121) in a sliding manner;

an elastic piece I (415) is arranged between the limiting rod (414) and the mounting seat (41);

after the mounting seat (41) is fixed to the tool holder (14) by the magnet (141);

when the limit rod (414) is not aligned with the limit groove (1421), the limit rod (414) is positioned in the buffer groove (4121);

when the limiting rod (414) is aligned with the limiting groove (1421), one end of the limiting rod (414) extends into the limiting groove (1421).

10. The tool changer for milling of an aircraft engine blade according to claim 8, characterized in that: an additional mechanism (5) is arranged on the mounting seat (41);

after the mounting seat (41) is mounted to the connecting groove (142), and when the limiting rod (414) is not aligned with the limiting groove (1421), the additional mechanism (5) drives the mounting seat (41) to rotate in the connecting groove (142) so that the limiting rod (414) is aligned with the limiting groove (1421), and then the limiting rod (414) extends out of the limiting groove (1421) under the action of the first elastic element (415).

Technical Field

The application relates to a milling machine tool changing technology, in particular to a tool changing device for milling an aircraft engine blade.

Background

Curved surface machining is often involved in the production process of the aero-engine blade, and in the related art, the curved surface machining of the aero-engine blade is mainly realized by milling the blade through a milling machine. The milling machine mainly refers to a machine tool for milling various surfaces of a workpiece by using a milling cutter. Typically the milling cutter is moved primarily in a rotary motion and the movement of the workpiece and the milling cutter is a feed motion. It can be used for processing plane, groove, various curved surfaces and gears. But also can process more complex molded surfaces, has higher efficiency than a planer, and is widely applied in mechanical manufacturing and repairing departments.

Referring to fig. 1 and 2, in the related art, a milling machine 1 includes a base 11 and a table 12, a first moving mechanism 111 is mounted on an upper surface of the base 11, a second moving mechanism 112 is mounted on the first moving mechanism 111, a workpiece seat 113 for fixing a workpiece is mounted on the second moving mechanism 112, the workpiece seat 113 is two chucks, and the first moving mechanism 111 and the second moving mechanism 112 are matched to realize displacement of the workpiece seat 113 on the base 11 along the width and length directions of the base 11.

The workbench 12 is fixedly installed on one side of the base 11, a tool arm 13 is installed on the side wall of the workbench 12, a lifting mechanism 121 is installed between the tool arm 13 and the workbench 12, a tool apron 14 is installed at one end, far away from the workbench 12, of the tool arm 13, and a driving mechanism for driving the tool apron 14 to rotate is installed in the tool arm 13. The insert seat 14 is provided with a milling cutter 4.

During the process of processing the workpiece, the workpiece is fixed to the workpiece seat 113, then the milling machine 1 is started, the tool arm 13 is driven by the lifting mechanism 121 to descend to a specified height, the driving mechanism in the tool arm 13 drives the milling cutter 4 to rotate, the workpiece is moved by the cooperation of the first moving mechanism 111 and the longitudinal movement, and the milling cutter 4 finishes processing the workpiece during the process of moving the workpiece.

In view of the above-mentioned related art, the inventor finds that the milling cutter 4 in the related art is generally fixed to the cutter seat 14 through bolts, and during the replacement of the milling cutter 4, the replacement generally needs to be performed manually, which is time-consuming and labor-consuming, and thus leads to a problem of low production efficiency of the blade of the aircraft engine.

Disclosure of Invention

In order to improve the problem that wastes time and energy when the milling cutter among the correlation technique is changed, this application provides a tool changing device.

The application provides a tool changing device that aeroengine blade milled adopts following technical scheme:

a tool changing device for milling an aircraft engine blade is used in cooperation with a milling machine, wherein a tool arm is arranged on the milling machine, and a tool apron is arranged on the tool arm; the tool changing device comprises a base and a tool magazine seat;

the tool magazine base is rotatably mounted to the base; the base is provided with a driving mechanism for driving the tool magazine base to rotate; the base is used for driving the tool magazine seat to move transversely and longitudinally;

the tool magazine seat is provided with a plurality of tool storage areas which are sequentially arranged around the axis of the tool magazine seat; a milling cutter is arranged in the cutter storage area, and a mounting seat is coaxially and fixedly connected to the milling cutter; a tool changing track is further arranged in the tool storage area, and the mounting seat is connected to the tool changing track in a sliding manner;

the tool changer seat is provided with a tool changing area; the length direction of the tool changing track in the tool changing area is the same as the transverse running direction of the tool magazine seat;

the tool apron is provided with a magnet matched with the mounting seat;

the base drives the milling cutter at the cutter changing area to move and is fixedly adsorbed to the magnet, and the base drives the cutter base seat to move along the transverse direction until the cutter changing track is separated from the mounting seat;

the base drives the tool magazine base to move, so that the mounting seat on the tool apron is connected to the tool changing track in the tool changing area in a sliding mode, the base drives the tool magazine base to move longitudinally, and the milling cutter is separated from the tool apron.

By adopting the technical scheme, in the process of processing a workpiece, when the milling cutter on the cutter holder needs to be replaced, the cutter base moves to the cutter holder through the matching of the driving part and the lifting part, the cutter base moves along the horizontal direction, the convex edge on the mounting seat of the milling cutter at the cutter holder gradually enters the cutter changing track in the cutter storage area, and then the cutter base moves downwards to separate the milling cutter from the cutter holder.

And selecting a proper milling cutter on the tool magazine base, and driving the tool magazine base to rotate through a driving mechanism so that the milling cutter is adjusted to a tool changing area. The tool magazine base moves to the tool apron position through the matching of the driving part and the lifting part, and the mounting base on the milling cutter in the tool changing area enters the connecting groove and is adsorbed and fixed by the magnet. And then the tool magazine base moves to the convex edge on the mounting base along the horizontal direction to be separated from the tool changing track, and the tool magazine base is reset, so that the milling cutter on the tool apron can be automatically replaced, the manpower resource is saved, and the production efficiency of the aero-engine blade is improved.

The automatic replacement of the milling cutter on the cutter holder can be realized through the cutter changing device.

Optionally, the tool magazine base is of a circular plate-shaped structure.

By adopting the technical scheme, the distance between the edge of the tool magazine seat with the circular plate-shaped structure and the rotating shaft between the tool magazine seat and the base is equal, so that the distance between each tool storage area and the rotating shaft between the tool magazine seat and the base is equal, and the movement stroke of the tool magazine seat can be set to be consistent during tool changing at each time.

Optionally, the tool storage area of the tool magazine base is provided with a tool storage cavity, and the tool changing track is arranged in the tool storage cavity.

By adopting the technical scheme, the occupied space of the tool changing track is reduced, the tool changing track is arranged in the tool storage cavity, and the tool magazine base can also have a certain protection effect on the tool changing track.

Optionally, the tool changing track is a sliding groove arranged on the side wall of the tool storage cavity.

By adopting the technical scheme, the occupation of the tool changing track on the space in the tool storage cavity is reduced.

Optionally, the cross section of the mounting seat is circular, a circular convex edge is integrally arranged on the periphery of the mounting seat, and the convex edge is connected to the tool changing rail in a sliding manner.

Through adopting above-mentioned technical scheme for the mount pad is keeping under vertical state, and protruding edge on the mount pad is no matter from which angle enter into the tool changing track can, makes the tool magazine seat more convenient when dismantling milling cutter like this, simultaneously because the thickness of mount pad can be increased in the setting on protruding edge, makes the mount pad more stable, and the tool changing track needn't change along with the change of mount pad.

Optionally, the mounting seat includes a base portion and a connecting portion that are integrally provided;

the tool apron is provided with a connecting groove matched with the connecting part, and the connecting part is inserted into the connecting groove.

By adopting the technical scheme, the milling cutter on the cutter holder is more stable after bearing transverse force in a working state.

Optionally, a limiting groove with a polygonal cross section is arranged on the tool apron;

a limiting rod matched with the limiting groove is fixedly connected to the mounting seat;

the limiting rod is connected to the limiting groove in a sliding mode.

Through adopting above-mentioned technical scheme, avoid as far as milling cutter on the blade holder under operating condition, produce relative rotation between mount pad and the blade holder for milling cutter on the blade holder can more stable work under operating condition.

Optionally, the limiting rod is coaxial with the mounting seat, and the limiting groove is coaxial with the tool apron.

Through adopting above-mentioned technical scheme, be in operating condition at milling cutter, the moment of torsion power that receives on the gag lever post is littleer to make the better stability of gag lever post.

Optionally, the mounting seat is provided with a buffer slot, and the limiting rod is connected into the buffer slot in a sliding manner;

an elastic piece I is arranged between the limiting rod and the mounting seat;

after the mounting seat is fixed to the tool holder by the magnet;

when the limiting rod is not aligned with the limiting groove, the limiting rod is positioned in the buffer groove;

when the limiting rod is aligned with the limiting groove, one end of the limiting rod extends into the limiting groove.

Through adopting above-mentioned technical scheme, the tool magazine seat is installing the mount pad of milling cutter to the in-process of blade holder, if the gag lever post does not align with the spacing groove, because the setting up of dashpot makes the mount pad install to the blade holder in-process, the mount pad still can install to the blade holder, only install to the blade holder after the mount pad, the gag lever post is impressed in the dashpot, install to the blade holder after milling cutter like this, at the initial of milling cutter work, after milling cutter and workpiece surface butt, the first slow rotation of blade holder, can produce relative rotation between this in-process milling cutter and the blade holder, and produce relative pivoted in-process at milling cutter and blade holder, after gag lever post aligns with the spacing groove, under the effect of elastic component one the gag lever post stretch into the spacing inslot can.

Optionally, an additional mechanism is mounted on the mounting seat;

when the mounting seat is mounted to the connecting groove, the limiting rod is not aligned with the limiting groove, the additional mechanism can drive the mounting seat to rotate in the connecting groove to enable the limiting rod to be aligned with the limiting groove, and then the limiting rod extends out of the limiting groove under the action of the first elastic piece.

Through adopting above-mentioned technical scheme, after the mount pad is installed to the spread groove, and when the gag lever post did not align with the spacing groove, additional mechanism can drive the mount pad and align with the spacing groove at spacing inslot internal rotation to gag lever post, and messenger's gag lever post that like this can be more convenient stretches out to the spacing inslot.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the milling machine is provided with the base and the tool changing seat, and the tool apron is provided with the magnet, so that the milling tool on the tool apron can be automatically replaced, the manpower is greatly saved, and the production efficiency of the production of the blade of the aero-engine is improved;

2. the connecting groove is formed in the tool apron, the limiting groove is formed in the tool apron in the connecting groove, and the limiting rod is arranged on the mounting seat of the milling tool, so that the milling tool mounted on the tool apron is more convenient and faster in the working process;

3. through set up the dashpot on the mount pad for milling cutter on the blade holder is more convenient when changing.

Drawings

Fig. 1 is a schematic structural diagram of an external shape of a milling machine in the related art.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

FIG. 3 is a schematic view of a tool changer mounted to a milling machine in an embodiment of the present application.

Fig. 4 is a schematic structural diagram of the outer shape of the tool changer in the embodiment of the application.

Fig. 5 is a schematic view showing a layout structure of the tool magazine base on the third base body in the embodiment of the present application.

Fig. 6 is a schematic view showing a mounting structure of the milling cutter mounted to the insert seat in the embodiment of the present application.

Fig. 7 is a partially enlarged schematic view of a portion B in fig. 6.

Fig. 8 is a schematic structural diagram of the external shape of the rotating wheel in the embodiment of the application.

Description of reference numerals: 1. milling machine; 11. a base; 111. a first moving mechanism; 112. a second moving mechanism; 113. a workpiece seat; 12. a work table; 121. a lifting mechanism; 13. a cutter arm; 14. a tool apron; 141. a magnet; 142. connecting grooves; 1421. a limiting groove; 2. a base; 21. a first seat body; 211. a sliding track; 212. a drive member; 2121. a motor; 2122. a lead screw; 22. a second seat body; 221. a groove; 222. a connecting rod; 223. a lifting member; 23. a seat body III; 231. a slideway; 232. a drive member; 3. a tool magazine base; 31. a cutter storage area; 32. a cutter changing area; 33. a cutter storage cavity; 331. tool changing rails; 4. milling cutters; 41. a mounting seat; 411. a base portion; 412. a connecting portion; 4121. a buffer tank; 413. a convex edge; 414. a limiting rod; 415. a first elastic part; 416. an additional cavity; 417. an additional aperture; 5. an attachment mechanism; 51. an active motor; 52. a storage battery; 53. a control button; 54. a rotating wheel; 541. arranging a slot; 55. a bump; 551. a guide slope; 552. an arc-shaped surface; 56. and a second elastic element.

Detailed Description

The present application is described in further detail below with reference to figures 3-7.

The embodiment of the application discloses a tool changing device for milling an aero-engine blade. Referring to fig. 3, the tool changer is used in cooperation with the milling machine 1, the milling machine 1 includes a base 11 and a table 12, a first moving mechanism 111 is mounted on the upper surface of the base 11, a second moving mechanism 112 is mounted on the first moving mechanism 111, the moving directions of the first moving mechanism 111 and the second moving mechanism 112 are perpendicular to each other, a workpiece seat 113 for fixing a workpiece is mounted on the second moving mechanism 112, and the workpiece seat 113 is composed of two chucks.

The workbench 12 is fixedly installed on one side of the base 11, the tool arm 13 is installed on the side wall of the workbench 12, and the lifting mechanism 121 is installed between the tool arm 13 and the workbench 12, and the lifting mechanism 121 is used for driving the tool arm 13 to lift.

Referring to fig. 3, a tool post 14 is rotatably mounted on an end of the tool arm 13 away from the table 12, and a driving mechanism, such as a motor 2121, for driving the tool post 14 to rotate is mounted in the tool arm 13.

Referring to fig. 4, the tool changer includes a base 2 and a magazine base 3.

The base 2 comprises a first base body 21, a second base body 22 and a third base body 23, wherein the first base body 21 is fixedly installed on one side of the base 11, a sliding rail 211 which is horizontally arranged is fixedly installed on the upper surface of the first base body 21, the sliding rail 211 is two T-shaped steels which are arranged in parallel, two grooves 221 which are matched with the T-shaped steels are formed in the lower surface of the corresponding second base body 22, the two grooves 221 are respectively in one-to-one correspondence with the two T-shaped steels, and the T-shaped steels are connected into the grooves 221 in a sliding mode.

The first seat body 21 is provided with a driving part 212 for driving the second seat body 22 to reciprocate along the sliding track 211. The driving unit 212 may be a hydraulic cylinder, in this embodiment, the driving unit 212 is a motor 2121 and a lead screw 2122, the lead screw 2122 passes through the second housing 22 along the length direction of the sliding track 211, the lead screw 2122 and the second housing 22 are in threaded connection, an end of the lead screw 2122 is rotatably connected to the first housing 21, the motor 2121 is fixedly mounted to the first housing 21, an output shaft of the motor 2121 is fixedly connected to the lead screw 2122, and the motor 2121 is configured to drive the lead screw 2122 to rotate.

The third seat body 23 is mounted to the second seat body 22, the third seat body 23 is provided with a slide track 231 along the vertical direction, and in order to save the occupied space of the slide track 231, the slide track 231 is a straight hole formed in the third seat body 23. The second seat 22 is fixedly connected with a connecting rod 222 adapted to the slide track 231, and the connecting rod 222 is slidably connected to the slide track 231. The second seat 22 is fixedly connected with a lifting member 223 for driving the third seat 23 to lift, in this embodiment, the lifting member 223 is a hydraulic cylinder.

Referring to fig. 5, the tool magazine base 3 is a horizontally disposed circular plate-shaped structure, and the tool magazine base 3 is rotatably connected to the base body three 23. A driving member 232 for driving the tool magazine base 3 to rotate is installed on the third seat body 23, in this embodiment, the driving member 232 is a servo motor fixedly connected to the third seat body 23, and an output shaft of the servo motor is fixedly connected to the tool magazine base 3.

The tool magazine base 3 is provided with a plurality of tool storage areas 31, and the tool storage areas 31 are uniformly arranged around the axis of the tool magazine base 3. For the convenience of the following description, a certain tool storage area 31 of the magazine base 3 is designated as a tool changing area 32.

A tool storage cavity 33 is arranged on the tool magazine base 3 at the tool storage area 31, a tool changing track 331 is arranged in the tool storage cavity 33, and the tool changing track 331 at the tool changing area 32 is arranged along the length direction of the sliding track 211. In order to reduce the occupation of the tool changing track 331 on the space, the tool changing track 331 is configured as two sliding grooves arranged on the inner wall of the tool storage cavity 33, and the two sliding grooves are respectively arranged on two side walls in the tool storage cavity 33 and located at opposite positions.

The cutter storage cavity 33 is internally provided with a milling cutter 4, the milling cutter 4 is coaxially and fixedly connected with an installation seat 41, the periphery of the installation seat 41 is provided with an annular convex edge 413, and the convex edge 413 is coaxial with the installation seat 41. The convex edge 413 on the mounting seat 41 is slidably connected to the tool changing rail 331. The plurality of milling cutters 4 in the magazine base 3 are different in kind.

Referring to fig. 6, the holder 14 is provided with a magnet 141 for attracting the mount 41.

Before the workpiece is machined, the appropriate milling cutter 4 on the tool magazine 3 is selected, and the tool magazine 3 is driven by the drive mechanism 232 to rotate, so that the milling cutter 4 is adjusted to the tool changing area 32. The tool magazine base 3 is moved to the position of the tool magazine base 3 by the cooperation of the driving member 212 and the lifter 223, and the mounting base 41 on the milling cutter 4 in the tool change area 32 is attracted to the magnet 141. Then, the tool magazine 3 is moved horizontally until the convex edge 413 of the mounting seat 41 is separated from the tool changing track 331, and the tool magazine 3 is reset.

When the milling cutter 4 on the tool apron 14 needs to be replaced, the tool magazine base 3 is moved to the tool apron 14 through the cooperation of the driving component 212 and the lifting component 223, the tool magazine base 3 is moved in the horizontal direction, the convex edge 413 of the mounting base 41 mounted on the tool apron 14 gradually enters the tool changing track 331 in the tool storage area 31, and then the tool magazine base 3 moves downwards, so that the milling cutter 4 is separated from the tool apron 14.

And then selecting a proper milling cutter 4 on the tool magazine base 3 according to the requirement, rotating the milling cutter 4 to the tool changing area 32, installing the milling cutter 4 to the tool apron 14 according to the installation mode of the milling cutter 4, and resetting the tool magazine base 3 to realize automatic changing of the milling cutter on the tool apron 14, so that the manpower resource is saved, and the production efficiency of the production of the aero-engine blade is improved.

Referring to fig. 6, a connecting groove 142 adapted to the connecting seat is further formed in the tool holder 14, the mounting seat 41 is inserted into the mounting groove, and the magnet 141 is fixedly connected to a bottom wall of the connecting groove 142.

The cooperation of the coupling slot 142 and the mounting 41 may be such that the milling cutter 4 is more stable when subjected to lateral forces.

Referring to fig. 6, in order to facilitate the installation of the milling cutter 4 to the tool seat 14, the installation seat 41 of the milling cutter 4 on the tool magazine base 3 can be easily inserted into the connection groove 142.

The cross section of the mounting seat 41 is circular, the mounting seat 41 includes a base portion 411 and a connecting portion 412 that are integrally arranged, the milling cutter 4 is fixedly connected to the base portion 411 of the mounting seat 41, the connecting portion 412 is arranged on one side of the base portion 411 away from the milling cutter 4, the connecting portion 412 is in a circular truncated cone shape, and the diameter of the connecting portion 412 is gradually reduced from the milling cutter 4 to the base portion 411. The coupling groove 142 is provided in a shape to be fitted with the coupling portion 412.

The cross section of mount pad 41 is circular for mount pad 41 aligns with connecting groove 142 when stretching into connecting groove 142 more easily, and connecting portion 412 of mount pad 41 is round platform form in addition, makes connecting portion 412 of mount pad 41 when stretching into connecting groove 142, and the opening of connecting groove 142 is greater than the one end that connecting portion 412 kept away from base portion 411, thereby makes connecting portion 412 stretch into connecting groove 142 more easily, to sum up make mount pad 41 be more convenient for install to blade holder 14.

Furthermore, a limiting groove 1421 having a polygonal cross section is disposed on the bottom wall of the connecting groove 142, and the limiting groove 1421 is coaxial with the connecting groove 142. The corresponding magnet 141 is provided in an annular structure, and the magnet 141 is coaxial with the connecting groove 142.

Referring to fig. 5, a surface of the connecting portion 412 of the mounting base 41 facing away from the base portion 411 is integrally provided with a limiting rod 414 adapted to the limiting groove 1421, and when the connecting portion 412 is embedded in the connecting groove 142, the limiting rod 414 extends into the limiting groove 1421.

Due to the cooperation of the limiting rod 414 and the limiting groove 1421, the milling cutter 4 can be prevented from rotating relative to the cutter seat 14 in the working state as much as possible, so that the milling cutter 4 is more stable in the working state.

Referring to fig. 6, still further, a buffer groove 4121 adapted to the limiting rod 414 is formed in one surface of the connecting portion 412 of the mounting seat 41 away from the base portion 411 along an axial direction of the mounting seat 41, and the buffer groove 4121 is coaxial with the mounting seat 41. The position-limiting rod 414 is slidably connected to the inside of the buffer groove 4121, and an elastic member 415 is fixedly connected between the position-limiting rod 414 and the bottom wall of the buffer groove 4121, wherein the elastic member 415 is a spring in this embodiment. When the mounting base 41 is mounted to the tool holder 14, the limiting rod 414 is inserted into the limiting groove 1421 of the tool holder 14 by the first elastic member 415.

In the process of mounting the mounting seat 41 of the milling cutter 4 on the tool apron 14, if the limiting rod 414 is not aligned with the limiting groove 1421, due to the arrangement of the buffer groove 4121, the mounting seat 41 can still be mounted on the tool apron 14 in the process of mounting the mounting seat 41 on the tool apron 14, only after the mounting seat 41 is mounted on the tool apron 14, the limiting rod 414 is pressed into the buffer groove 4121, so that after the milling cutter 4 is mounted on the tool apron 14, at the beginning of the operation of the milling cutter 4, after the milling cutter 4 abuts against the surface of the workpiece, the tool apron 14 rotates slowly, in the process, relative rotation is generated between the milling cutter 4 and the tool apron 14, and in the process of generating relative rotation between the milling cutter 4 and the tool apron 14, after the limiting rod 414 is aligned with the limiting groove 1421, the limiting rod 414 only needs to extend into the limiting groove 1421 under the action of the first elastic member 415.

The provision of the relief groove 4121 and the first resilient member 415 facilitates the mounting of the milling cutter 4 to the holder 14.

Referring to fig. 6, an additional mechanism 5 is disposed on the mounting seat 41, and after the tool changer mounts the mounting seat 41 to the connecting groove 142 of the tool apron 14, when the limiting rod 414 is not aligned with the limiting groove 1421, the additional mechanism 5 is configured to drive the mounting seat 41 to rotate in the connecting groove 142 until the limiting rod 414 is aligned with the limiting groove 1421.

Referring to fig. 7, an additional cavity 416 is provided in the base portion 411 of the mounting seat 41, and an additional hole 417 communicating with the additional cavity 416 is opened in an outer circumferential surface of the base portion 411 of the mounting seat 41. The attachment mechanism 5 includes an active motor 51 disposed within an attachment chamber 416, and a battery 52 disposed within the attachment chamber 416 for supplying power to the active motor 51. The active motor 51 is electrically connected to a battery 52, and the battery 52 is used to supply power to the active motor 51.

Referring to fig. 6, a control button 53 is provided on a connection portion 412 of the mount 41, and the control button 53 is electrically connected to the active motor 51. When the mounting seat 41 is mounted in the connecting groove 142, the control button 53 contacts with the inner wall of the connecting groove 142, and the control button 53 controls the rotating shaft of the driving motor 51 to rotate for several turns and then stop.

Referring to fig. 7, a runner 54 is coaxially fixed to an output shaft of the driving motor 51, and an outer circumferential surface of the runner 54 is flush with an outer circumferential surface of the base 411.

After the mounting seat 41 is mounted in the connecting groove 142, the inner wall of the connecting groove 142 presses the control button 53, the control button 53 controls the output shaft of the driving motor 51 to rotate for a plurality of turns, the driving motor 51 drives the rotating wheel 54 to rotate in the additional cavity 416, and in the process, the rotating wheel 54 and the inner wall of the connecting groove 142 generate friction, so that the mounting seat 41 is driven to rotate in the connecting groove 142.

When the position-limiting rod 414 is aligned with the position-limiting groove 1421, the position-limiting rod 414 extends into the position-limiting groove 1421. If the limiting rod 414 extends into the limiting groove 1421, the output shaft of the driving motor 51 still rotates, and at this time, the rotating wheel 54 idles due to the limitation of the limiting rod 414 that the mounting base 41 does not rotate any more.

In order to make the rotor 54 rotate the mounting seat 41 in the connecting groove 142, the friction between the rotor 54 and the inner wall of the connecting groove 142 is larger.

Referring to fig. 8, a plurality of disposition grooves 541 are formed on an outer circumferential surface of the runner 54, the plurality of disposition grooves 541 are uniformly disposed around an axis of the runner 54, and the disposition grooves 541 are installed in the protrusions 55.

Referring to fig. 7, a second elastic member 56 is fixedly connected between the bump 55 and the bottom wall of the disposing groove 541, the second elastic member 56 is a spring, and the bump 55 extends out of the disposing groove 541 under the action of the second elastic member 56. The upper edge of the projection 55 protruding out of the disposing groove 541 is provided with a guide slope 551.

After the mounting seat 41 is mounted in the connecting groove 142, the protrusion 55 is tightly abutted against the inner wall of the connecting groove 142 under the action of the second elastic element 56, so that the friction force between the rotating wheel 54 and the inner wall of the connecting groove 142 can be greatly increased. Meanwhile, since the projection 55 is provided with the guide slope 551 at one side of the disposing groove 541, the installation base 41 can enter the connecting groove 142 more easily due to the guide slope 551 during the installation of the installation base 41 into the connecting groove 142.

Further, the additional cavity 416 is larger than the runner 54.

Referring to fig. 8, a side of the protrusion 55 protruding out of the arrangement groove 541 is provided as an arc-shaped surface 552.

After the mounting seat 41 is mounted in the connecting groove 142, the additional cavity 416 is larger than the rotating wheel 54 during the rotation of the rotating wheel 54, so that the protrusion 55 on the rotating wheel 54 does not contact with the inner wall of the additional cavity 416 during the rotation of the rotating wheel 54, and thus the friction force applied to the rotating wheel 54 during the rotation of the rotating wheel 54 is smaller.

Meanwhile, as the surface of the projection 55 extending out of the arrangement groove 541 is the arc-shaped surface 552, the transition from the rotation of the projection 55 in the additional cavity 416 to the abutment with the inner wall of the connection groove 142 is smoother in the rotation process of the rotating wheel 54.

The implementation principle of the tool changing device for milling the blades of the aero-engine in the embodiment of the application is as follows: in the process of processing a workpiece, when the milling cutter 4 on the tool apron 14 needs to be replaced, the driving component 212 is matched with the lifting component 223, so that the tool magazine base 3 moves to the tool apron 14, the tool magazine base 3 moves in the horizontal direction, the convex edge 413 on the mounting base 41 of the milling cutter 4 on the tool apron 14 gradually enters the tool changing track 313 in the tool storage area 31, and then the tool magazine base 3 moves downwards, so that the milling cutter 4 is separated from the tool apron 14.

The appropriate milling cutter 4 on the magazine base 3 is selected and the magazine base 3 is driven in rotation by the drive mechanism 232, so that the milling cutter 4 is adjusted to the tool changing area 32. The tool magazine base 3 is moved to the position of the tool rest 14 by the cooperation of the driving member 212 and the lifter 223, and the mounting base 41 of the milling cutter 4 in the cutter changing area 32 enters the connecting groove 142 and is attracted and fixed by the magnet 141. Then, the tool magazine 3 is moved horizontally until the convex edge 413 of the mounting seat 41 is separated from the tool changing track 331, and the tool magazine 3 is reset.

The control button 53 is pressed by the inner wall of the connecting groove 142, the control button 53 controls the output shaft of the driving motor 51 to drive the rotating wheel 54 to rotate in the additional cavity 416, and when the limiting rod 414 is aligned with the limiting groove 1421, the limiting rod 414 extends into the limiting groove 1421.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.