CN115502784A

CN115502784A - Small seven-axis numerical control machine tool

Info

Publication number: CN115502784A
Application number: CN202211161494.2A
Authority: CN
Inventors: 黄波; 何凯; 赵刚; 徐清平; 张君泰
Original assignee: Shenzhen Institute of Advanced Technology of CAS
Current assignee: Shenzhen Institute of Advanced Technology of CAS
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-23

Abstract

The invention discloses a small seven-axis numerical control machine tool, and belongs to the field of machine tools. This small-size seven axis numerical control machine tools includes: a base; a moving shaft assembly disposed at the base; the rotating shaft assembly is arranged on the base, and part of the structure of the rotating shaft assembly moves under the action of part of the structure of the moving shaft assembly so as to perform turning and milling combined machining on parts; the clamping assembly is arranged on the base and used for clamping and fixing the part; the clamping assembly comprises a first fixing piece, an installation piece, a driving piece and a turnover piece. This application adopts the seven axle structural schemes of three rotation axis and four removal axles, and the complete process processing of realization single part that can be more convenient accomplishes the complete processing of small-size complicated part in a processing cycle, carries out two-sided processing to the part.

Description

Small seven-axis numerical control machine tool

Technical Field

The invention relates to the field of machine tools, in particular to a small seven-axis numerical control machine tool.

Background

The small-sized parts are required to be machined in the fields of medical instruments, jewelries, clocks, aerospace and the like, the requirements on machining precision of middle and low-end products are moderate, the manufacturing cost of manufacturing equipment is low, the machining efficiency is high, and all machining procedures of the parts can be automatically completed in one period. The manufacturing equipment of middle and low-end products needs to have the requirement of low manufacturing cost, so the structural scheme adopts a desktop type, is small and exquisite and is easy to carry. The main parts of the machine tool, including the main shaft, the moving shaft, the rotating shaft, the tool magazine and the like, need to be completely installed on the platform desktop. For parts with two machined surfaces, the requirement of automatic and complete machining is considered, and a structure capable of enabling the parts to be overturned needs to be designed. And the multi-process characteristics of parts, the implant digit control machine tool that designs need install simultaneously and mill main shaft and car owner's axle, carries out the processing of different processes respectively.

At present, the design of a multi-axis numerical control machine tool mainly takes five axes and large size as main factors. The five-axis numerical control machine tool can well finish curved surface machining, but only aims at a single surface, and for double-surface machining, five axes cannot finish all working procedures in one clamping, so that the five-axis numerical control machine tool has insufficient functionality aiming at specific parts and low machining efficiency. The large machine tool has good rigidity, high product processing precision, larger size, difficult movement and high manufacturing cost, and is not very suitable for processing middle and low-end products.

Disclosure of Invention

This application embodiment provides a small-size seven axis numerical control machine tools on the one hand to turn and mill combined machining to the part satisfies the multiple operation processing of small-size part, and overturns the part through the centre gripping subassembly, carries out two-sided processing. This digit control machine tool includes: a base; a moving shaft assembly disposed at the base; the rotating shaft assembly is arranged on the base, and part of the structure of the rotating shaft assembly moves under the action of part of the structure of the moving shaft assembly so as to perform turning and milling combined machining on parts; the clamping assembly is arranged on the base and used for clamping and fixing the part; wherein, the centre gripping subassembly includes first mounting, installed part, driving piece and upset piece, first mounting set up in the rotation axis subassembly, first mounting is used for the fixed part, the installed part set up in the rotation axis subassembly, the upset piece rotate set up in the installed part, installed part one side is provided with the driving piece, the upset piece is in rotate under the effect of driving piece to with the fixed and upset of part.

In some embodiments, the mounting member includes a fixing seat, a bearing, a turning shaft, and a mounting seat, the fixing seat is disposed on the moving shaft assembly, the bearing is disposed on two sides of the fixing seat, the turning shaft is disposed between the bearings, and the mounting seat is disposed on an outer wall of the fixing seat and used for mounting the driving member.

In some embodiments, the turning member includes a turning seat, a cushion block, and a second fixing member, the turning seat is sleeved outside the turning shaft, the cushion block is disposed on one side of the turning seat, the second fixing member is disposed on one side of the cushion block, and the second fixing member is used for clamping a part.

In some embodiments, the driving member includes a turnover cylinder and a connecting rod, the turnover cylinder is fixed to the mounting seat, one end of a piston rod of the turnover cylinder is connected to the connecting rod, and the connecting rod is rotatably connected to the turnover seat.

In some embodiments, the rotating shaft assembly includes a first spindle assembly, a second spindle assembly, and a third spindle assembly, the first spindle assembly is disposed on the base for turning, the second spindle assembly is slidably disposed on the moving shaft assembly, the third spindle assembly is disposed on the second spindle assembly for milling, the third spindle assembly swings under the action of the second spindle assembly, and the second spindle assembly and the third spindle assembly move under the action of the moving shaft assembly.

In some embodiments, the movable shaft assembly includes an X-axis guide rail disposed on the surface of the base, a first motor disposed on the X-axis guide rail, an X-axis lead screw disposed on the X-axis guide rail and connected to an output end of the first motor, a Y-axis guide rail disposed on the X-axis lead screw, a second motor disposed on the Y-axis guide rail, a Y-axis lead screw disposed on the Y-axis guide rail and connected to an output end of the second motor, a Z-axis guide rail disposed on the Y-axis lead screw, a third motor disposed on the Z-axis guide rail, and a Z-axis lead screw disposed on the Z-axis guide rail and connected to an output end of the third motor, wherein two of the X-axis, the Y-axis, and the Z-axis are perpendicular to each other, and the second spindle assembly is connected to the Z-axis lead screw.

In some embodiments, the movable shaft assembly further includes a first guide rail, a fourth motor disposed on the first guide rail, and a first lead screw disposed on the first guide rail and connected to an output end of the fourth motor, and the first lead screw is connected to the fixing base.

In some embodiments, the first spindle assembly includes a first support, a fifth motor, and a vehicle spindle, the first support is disposed on the base, the fifth motor is disposed on the first support, the vehicle spindle is rotatably disposed on one side of the base, an output end of the fifth motor is connected to the vehicle spindle through a belt assembly, and the vehicle spindle is connected to the first fixing member.

In some embodiments, the second spindle assembly includes a sliding plate, a connecting plate, and a first motor, the sliding plate is disposed on the Z-axis guide rail, the sliding plate can slide on the Z-axis guide rail along the Z-axis, the connecting plate is disposed on a side of the sliding plate away from the Z-axis guide rail, the first motor is disposed on a side of the connecting plate away from the Z-axis guide rail, and the first motor is configured to drive the third spindle assembly to swing.

In some embodiments, the third spindle assembly includes a second support provided at an output of the first motor and a milling spindle provided at the second support.

This application adopts three rotation axis and four seven axle structural schemes that remove the axle, and the complete process processing of realization single part that can be more convenient accomplishes small-size complicated part in a processing cycle, carries out two-sided processing to the part. Compared with the existing five-axis machine tool, the five-axis machine tool has high automation degree, improves the production efficiency and is more beneficial to mass production. The turning spindle and the milling spindle are combined in the rotating shaft assembly, so that the turning and milling combined machining function can be realized, and multi-process machining is supported; the movable shaft assembly, the rotating shaft assembly, the clamping assembly and the tool magazine assembly are all arranged on the table type platform, the structure is compact, the movement is convenient, and the manufacturing cost is low.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts, wherein:

fig. 1 is a diagram illustrating an overall assembly structure of a numerical control machine tool according to an embodiment of the present invention;

fig. 2 is a structural diagram of a first spindle assembly of the numerically controlled machine tool according to an embodiment of the present invention;

fig. 3 is a structural view of a second spindle assembly and a third spindle assembly of the numerically controlled machine tool according to an embodiment of the present invention;

fig. 4 is a structural view of a moving shaft assembly of a numerical control machine tool according to an embodiment of the present invention;

fig. 5 is a structural diagram of a first fixing member of a numerical control machine according to an embodiment of the present invention;

FIG. 6 is a block diagram of a clamping assembly of a NC machine tool according to an embodiment of the present invention;

FIG. 7 is an exploded view of a NC machine tool clamping assembly according to an embodiment of the present invention;

fig. 8 is a structural diagram of a tool magazine assembly of a numerically controlled machine tool according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that the terms "first", "second", etc. are used hereinafter for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying a number of the indicated technical features. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features.

The terminology used in the description is for the purpose of describing the embodiments of the invention and is not intended to be limiting of the invention. It should also be noted that unless otherwise explicitly stated or limited, the terms "disposed," "connected," and "connected" should be interpreted broadly, as if they were fixed or removable, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. Those skilled in the art will specifically understand that the above description is meant to be specific to the present invention.

Referring to fig. 1, fig. 1 is a structural view of an overall assembly of a numerical control machine according to an embodiment of the present invention. The application provides a small-size seven-axis numerical control machine tool 100, including base 10, set up removal axle subassembly 20 on base 10, set up on base 10 and be used for turning and milling combined machining's rotation axis subassembly 30 and set up on base 10 and be used for carrying out the fixed centre gripping subassembly 40 of centre gripping to the part. Wherein a part of the structure of the rotation shaft assembly 30 is moved by a part of the structure of the moving shaft assembly 20.

It is understood that a user can fix the part to the rotating shaft assembly 30 through the clamping assembly 40, the rotating shaft assembly 30 drives the tool thereon to rotate, and the rotating shaft assembly 30 and the clamping assembly 40 are driven by the moving shaft assembly 20 to move to the proper positions, so that the tool can perform turning or milling on the part, thereby machining the part into a predetermined shape.

Referring to fig. 2 and 3, fig. 2 is a structural diagram of a first spindle assembly of a numerical control machine according to an embodiment of the present invention; fig. 3 is a structural diagram of a second spindle assembly and a third spindle assembly of a numerically controlled machine tool according to an embodiment of the present invention. The rotating shaft assembly 30 includes a first spindle assembly 301 provided to the base 10 for turning, a second spindle assembly 302 slidably provided to the moving shaft assembly 20, and a third spindle assembly 303 provided to the second spindle assembly 302 for milling. The third spindle assembly 303 can swing under the action of the second spindle assembly 302, and the second spindle assembly 302 and the third spindle assembly 303 move under the action of the moving shaft assembly 20.

Referring to fig. 4, fig. 4 is a structural diagram of a moving shaft assembly of a numerically controlled machine tool according to an embodiment of the present invention. The movable shaft assembly 20 may include an X-axis guide 201, a first motor 202 disposed on the X-axis guide 201, an X-axis lead screw 203 disposed on the X-axis guide 201 and connected to an output end of the first motor 202, a Y-axis guide 204 disposed on the X-axis lead screw 203, a second motor 205 disposed on the Y-axis guide 204, a Y-axis lead screw 206 disposed on the Y-axis guide 204 and connected to an output end of the second motor 205, a Z-axis guide 207 disposed on the Y-axis lead screw 206, a third motor 208 disposed on the Z-axis guide 207, and a Z-axis lead screw 209 disposed on the Z-axis guide 207 and connected to an output end of the third motor 208, wherein the X-axis, the Y-axis, and the Z-axis are perpendicular to each other, and the second spindle assembly 302 is connected to the Z-axis lead screw 209.

It is understood that when it is desired to move the second spindle assembly 302 and the third spindle assembly 303 in the X-axis direction, the first motor 202 can be activated, and the output end of the first motor 202 will drive the X-axis screw 203 to rotate continuously, so that the Y-axis guide 204 moves in the X-axis direction. When the first motor 202 drives the X-axis lead screw 203 to rotate in the forward direction, the Y-axis guide rail 204 moves to the left in the X direction, and when the first motor 202 drives the X-axis lead screw 203 to rotate in the reverse direction, the Y-axis guide rail 204 moves to the right in the X direction.

When the second spindle assembly 302 and the third spindle assembly 303 need to move in the Y direction, the second motor 205 may be started, and the output end of the second motor 205 may drive the Y-axis lead screw 206 to continuously rotate, so that the Z-axis guide rail 207 moves in the Y direction, and the Z-axis guide rail 207 moves in the Y direction. When the second motor 205 drives the Y-axis lead screw 206 to rotate forward, the Z-axis guide rail 207 moves forward in the Y-direction, and when the second motor 205 drives the Y-axis lead screw 206 to rotate backward, the Z-axis guide rail 207 moves backward in the Y-direction.

When it is required that the second spindle assembly 302 and the third spindle assembly 303 move in the Z direction, the third motor 208 may be started, and the output end of the third motor 208 may drive the Z-axis lead screw 209 to continuously rotate, so that the second spindle assembly 302 moves in the Z direction, and the second spindle assembly 302 moves in the Z direction. When the third motor 208 drives the Z-axis lead screw 209 to rotate in the forward direction, the second spindle assembly 302 moves upward in the Z direction, and when the third motor 208 drives the Z-axis lead screw 209 to rotate in the reverse direction, the second spindle assembly 302 moves downward in the Z direction.

In this way, the user can control the second spindle assembly 302 and the third spindle assembly 303 to move arbitrarily in the XYZ three directions by controlling the activation and deactivation of the first motor 202, the second motor 205, and the third motor 208.

Referring to fig. 4, the movable shaft assembly 20 may further include a first guide rail 210 disposed on the surface of the base 10, a fourth motor 211 disposed on the first guide rail 210, and a first lead screw 212 disposed on the first guide rail 210 and connected to an output end of the fourth motor 211.

It will be appreciated that when milling a part, the part needs to be secured a second time and turned over by the clamp assembly 40. Before the clamping assembly 40 turns over the part, the whole clamping assembly 40 needs to be moved to the first spindle assembly 301, at this time, the fourth motor 211 is started, and the output end of the fourth motor 211 drives the first lead screw 212 to continuously rotate, so as to drive the clamping assembly 40 to move in the X direction. When the fourth motor 211 drives the first lead screw 212 to rotate in the forward direction, the clamping assembly 40 moves to the left in the X direction, and when the fourth motor 211 drives the first lead screw 212 to rotate in the reverse direction, the clamping assembly 40 moves to the right in the X direction.

Referring to fig. 2, the first spindle assembly 301 may include a first support 3011 disposed on the base 10, a fifth motor 3012 disposed on the first support 3011, and a main spindle 3013 rotatably disposed on one side of the base 10 and connected to an output end of the fifth motor 3012 through a belt assembly. The main shaft 3013 is a mechanical main shaft for fixing the part and driving the part to rotate continuously.

When turning a part, a user can fix the part on the clamping assembly 40, then the fifth motor 3012 is started, the output end of the fifth motor 3012 drives the spindle 3013 to rotate through the belt assembly, so as to drive the part to rotate continuously, at this time, the cutter on the third spindle assembly 303 can move freely in the XYZ direction under the action of the moving shaft assembly 20, and after the cutter moves to the edge part of the part, the cutter continues to move, so as to turn the part. Turning is that the part rotates along with the main shaft 3013, and the cutter performs linear or curvilinear translation motion, so as to gradually approach the part for processing.

With continued reference to fig. 3, the second spindle assembly 302 may include a sliding plate 3021 disposed on the Z-axis guide rail 207 and capable of sliding along the Z-axis on the Z-axis guide rail 207, a connecting plate 3022 disposed on a side of the sliding plate 3021 away from the Z-axis guide rail 207, and a first motor 3023 disposed on a side of the connecting plate 3022 away from the Z-axis guide rail 207 and configured to drive the third spindle assembly 303 to swing.

It will be appreciated that the third spindle assembly 303 is not only capable of arbitrary movement in XYZ directions by the movement axis assembly 20, but is also capable of oscillating in the XZ plane by the second spindle assembly 302 so that the tool oscillates therewith. The first motor 3023 is a large drive motor that is compact, able to withstand the weight of the third spindle assembly 303, and able to maintain positioning accuracy well under load.

The third spindle assembly 303 may include a second support 3031 disposed at an output end of the first motor 3023 and a milling spindle 3032 disposed on the second support 3031 and used to mill a part. The milling spindle 3032 adopts an electric spindle and has the advantages of compact structure, higher processing precision and high rotating speed. The milling spindle 3032 can be used for milling, drilling, threading, cutting, and the like.

It should be understood that during the milling process, after the first surface of the part is turned, the clamping assembly 40 moves to the vicinity of the part and clamps the part, at which time the tool will cut the part, and then the part will be turned by a certain angle under the action of the clamping assembly 40. Since the milling spindle 3032 is an electric spindle, the milling spindle 3032 can rotate by itself, move in XYZ directions by the movable shaft assembly 20, and swing on the XZ plane by the first motor 3023. Thus, under the condition that the milling spindle 3032 continuously rotates to drive the cutter to continuously rotate, the cutter can process the second surface of the part again. The milling process is to ensure that the part is not moved, and the cutter is continuously moved and rotated.

Referring to fig. 5, 6 and 7, fig. 5 is a structural diagram of a first fixing member of a numerical control machine according to an embodiment of the present invention; FIG. 6 is a block diagram of a clamping assembly of a NC machine tool according to an embodiment of the present invention; fig. 7 is an exploded view of a clamping assembly of a numerical control machine according to an embodiment of the present invention. The clamping assembly 40 comprises a first fixing part 401, a mounting part 402, a driving part 403 and a turning part 404, wherein the first fixing part 401 is arranged on the vehicle main shaft 3013, the first fixing part 401 is used for fixing a part, the mounting part 402 is arranged on the first lead screw 212, the turning part 404 is rotatably arranged in the mounting part 402, the driving part 403 is arranged on one side of the mounting part 402, and the turning part 404 is rotated under the action of the driving part 403 to fix and turn the part.

The clamping assembly 40 has two parts, the first part is a first fixing member 401. The first fixture 401 may be a collet, or may be a chuck, collet, index head, or other suitable holding device. When the part is fixed in the first fixing part 401, turning can be performed at this time; when the part is secured to the upset 404, a milling operation may be performed.

Specifically, during turning, the part is fixed on the first fixing member 401, during milling, the turning member 404 can turn over to the tail end of the part and fix the part, then the tool can cut off the part, and the turning member 404 can drive the part to rotate to a proper position for milling.

The mounting member 402 includes a fixing seat 4021 provided to the rotary shaft assembly 30, bearings 4022 provided at both sides of the fixing seat 4021, a flipping shaft 4023 provided between the bearings 4022, and a mounting seat 4024 provided at an outer wall of the fixing seat 4021 and for mounting the driving member 403. The first lead screw 212 is connected with the fixed seat 4021.

Specifically, the fixed seat 4021 is substantially rectangular parallelepiped, but the fixed seat 4021 may have other shapes, such as a square, a triangle, and the like. The fixing seat 4021 is internally hollow, and the turnover shaft 4023 is positioned inside the fixing seat 4021. The anchor 4021 may be formed from metal (e.g., stainless steel, aluminum, etc.), plastic, fiber composite, or other suitable material or combination of materials. The bearings 4022 may be disposed on both sides of the fixed seat 4021 by interference connection. The bearing 4022 may be a roller bearing 4022 or a ball bearing 4022. The role of the flipping shaft 4023 is to assist the flipping element 404 in rotating.

The turning piece 404 includes a turning seat 4041 sleeved outside the turning shaft 4023, a cushion block 4042 disposed on one side of the turning seat 4041, and a second fixing piece 4043 disposed on one side of the cushion block 4042 and used for clamping the component. Wherein, first through-hole 4044 can be seted up to upset seat 4041 bottom, and upset seat 4041 overlaps in the upset axle 4023 outside through first through-hole 4044, upset seat 4041 and upset axle 4023 interference fit. The bottom of the turning seat 4041 is provided with two second through holes 4045 for cooperating with the driving member 403 to drive the turning seat 4041 and the second fixing member 4043 to rotate. The second fixing part 4043 is a pneumatic vice, and is used for clamping and fixing the part after being turned over.

The driving member 403 includes a turning cylinder 4031 fixed to the mounting seat 4024 and a connecting rod 4032 connected to one end of a piston rod of the turning cylinder 4031 and rotatably connected to the turning seat 4041. The connecting bar 4032 includes a connecting bar 4032 body and a rotation pin, the rotation pin is disposed at an end of the connecting bar 4032 body away from the flipping cylinder 4031, and the rotation pin is located in the first through hole 4044.

It can be understood that when the piston rod of the flipping cylinder 4031 extends, the connecting rod 4032 is pushed to move towards the fixing seat 4021, and since the connecting rod 4032 is connected to the bottom of the flipping seat 4041, the connecting rod 4032 drives the flipping seat 4041, the cushion block 4042 and the second fixing member 4043 to rotate counterclockwise; when the piston rod of the overturning cylinder 4031 retracts, the connecting rod 4032 is driven to move in a direction away from the fixed seat 4021, and the connecting rod 4032 drives the overturning seat 4041, the cushion block 4042 and the second fixing piece 4043 to rotate clockwise.

Referring to fig. 8, fig. 8 is a structural diagram of a tool magazine assembly of a numerical control machine according to an embodiment of the present invention. The compact seven-axis numerical control machine tool 100 may further include a magazine assembly 50, the magazine assembly 50 being disposed at the base 10, the magazine assembly 50 being adapted to exchange tools for the rotating shaft assembly 30. The tool magazine assembly 50 may include a rodless cylinder 501 provided to the base 10, a second motor 502 provided to an output end of the rodless cylinder 501, a support plate 503 provided to an output end of the second motor 502, a plurality of tool holders 504 provided on the support plate 503, and tool shanks 505 provided in the tool holders 504 and mounted with different types of tools.

The rodless cylinder 501 provides a moving function of the tool magazine assembly 50, and in a tool non-changing state, the second motor 502, the supporting plate 503, the tool holder 504, the tool shank 505 and the tool are located away from the X-axis guide rail 201; when tool changing is needed, the rodless cylinder 501 pushes the second motor 502 and components thereon to move to a position close to the X-axis guide rail 201, so that the milling spindle 3032 can conveniently change tools; after the tool changing is finished, the rodless cylinder 501 retracts to drive the second motor 502 and the components thereon to return to the initial position, so that the interference of the machining movement of the milling spindle 3032 is prevented.

This application adopts the seven axle structural schemes of three rotation axis and four removal axles, and the complete process processing of realization single part that can be more convenient accomplishes small-size complicated part in a processing cycle, and five-axis machine tool current relatively, its degree of automation is high, has improved production efficiency, more is favorable to mass production. The main shaft 3013 and the milling main shaft 3032 are combined in the rotating shaft assembly 30, so that a turning and milling composite machining function can be realized to support multi-process machining; the moving shaft assembly 20, the rotating shaft assembly 30, the clamping assembly 40 and the tool magazine assembly 50 are all disposed on the base 10, and have the advantages of compact structure, convenient movement and low manufacturing cost.

Reference throughout this specification to "one embodiment," "another embodiment," or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims

1. A small-size seven-axis numerical control machine tool, characterized by includes:

a base;

a moving shaft assembly disposed at the base;

the rotating shaft assembly is arranged on the base, and part of the structure of the rotating shaft assembly moves under the action of part of the structure of the moving shaft assembly so as to perform turn-milling composite machining on parts; and

the clamping assembly is arranged on the base and used for clamping and fixing the part;

wherein, the centre gripping subassembly includes first mounting, installed part, driving piece and upset piece, first mounting set up in the rotation axis subassembly, first mounting is used for the fixed part, the installed part set up in the rotation axis subassembly, the upset piece rotate set up in the installed part, installed part one side is provided with the driving piece, the upset piece is in rotate under the effect of driving piece to fix the part and overturn.

2. The small seven-axis numerical control machine tool according to claim 1, wherein the mounting member comprises a fixing seat, a bearing, a turning shaft and a mounting seat, the fixing seat is disposed on the moving shaft assembly, the bearing is disposed on two sides of the fixing seat, the turning shaft is disposed between the bearings, and the mounting seat is disposed on an outer wall of the fixing seat and used for mounting the driving member.

3. The small seven-axis numerical control machine tool according to claim 2, characterized in that the turning member includes a turning base, a cushion block and a second fixing member, the turning base is sleeved outside the turning shaft, the cushion block is arranged on one side of the turning base, the second fixing member is arranged on one side of the cushion block, and the second fixing member is used for clamping parts.

4. The small seven-axis numerical control machine tool according to claim 3, characterized in that the driving member comprises a turning cylinder and a connecting rod, the turning cylinder is fixed on the mounting seat, one end of a piston rod of the turning cylinder is connected with the connecting rod, and the connecting rod is rotatably connected with the turning seat.

5. The compact seven-axis numerical control machine according to claim 1, wherein the rotating shaft assembly comprises a first spindle assembly, a second spindle assembly and a third spindle assembly, the first spindle assembly is disposed on the base for turning, the second spindle assembly is slidably disposed on the moving shaft assembly, the third spindle assembly is disposed on the second spindle assembly for milling, the third spindle assembly swings under the action of the second spindle assembly, and the second spindle assembly and the third spindle assembly move under the action of the moving shaft assembly.

6. The small seven-axis numerical control machine tool according to claim 5, wherein the moving shaft assembly comprises an X-axis guide rail arranged on the surface of the base, a first motor arranged on the X-axis guide rail, an X-axis lead screw arranged on the X-axis guide rail and connected with the output end of the first motor, a Y-axis guide rail arranged on the X-axis lead screw, a second motor arranged on the Y-axis guide rail, a Y-axis lead screw arranged on the Y-axis guide rail and connected with the output end of the second motor, a Z-axis guide rail arranged on the Y-axis lead screw, a third motor arranged on the Z-axis guide rail, and a Z-axis lead screw arranged on the Z-axis guide rail and connected with the output end of the third motor, wherein the X-axis, the Y-axis and the Z-axis are perpendicular to each other, and the second spindle assembly is connected with the Z-axis lead screw.

7. The small seven-axis numerical control machine tool according to claim 6, wherein the moving axis assembly further comprises a first guide rail, a fourth motor disposed on the first guide rail, and a first lead screw disposed on the first guide rail and connected to an output end of the fourth motor, and the first lead screw is connected to the fixed base.

8. The small seven-axis numerical control machine tool according to claim 5, characterized in that the first spindle assembly comprises a first support, a fifth motor and a vehicle spindle, the first support is arranged on the base, the fifth motor is arranged on the first support, the vehicle spindle is rotatably arranged on one side of the base, an output end of the fifth motor is connected with the vehicle spindle through a belt assembly, and the vehicle spindle is connected with the first fixing member.

9. The small seven-axis numerical control machine according to claim 6, wherein the second spindle assembly comprises a sliding plate, a connecting plate and a first motor, the sliding plate is disposed on the Z-axis guide rail, the sliding plate can slide along the Z axis on the Z-axis guide rail, the connecting plate is disposed on a side of the sliding plate away from the Z-axis guide rail, the first motor is disposed on a side of the connecting plate away from the Z-axis guide rail, and the first motor is used for driving the third spindle assembly to swing.

10. The compact seven-axis numerical control machine tool according to claim 9, wherein the third spindle assembly comprises a second support and a milling spindle, the second support is disposed at an output end of the first motor, and the milling spindle is disposed at the second support.

11. The small-sized seven-axis numerical control machine according to claim 1, further comprising a tool magazine assembly disposed on the base, the tool magazine assembly being configured to exchange tools for the rotating shaft assembly.

12. The small seven-axis numerical control machine tool according to claim 11, wherein the tool magazine assembly comprises a rodless cylinder, a second motor, a support plate, tool holders and a tool shank, the rodless cylinder is arranged on the base, the second motor is arranged at an output end of the rodless cylinder, the support plate is arranged at an output end of the second motor, the tool holders are arranged on the support plate, the tool shanks are arranged in the tool holders, and tools are placed in the tool shanks.