CN115401496A

CN115401496A - Automatic change digit control machine tool

Info

Publication number: CN115401496A
Application number: CN202211207125.2A
Authority: CN
Inventors: 诸晓达; 陈建云
Original assignee: Individual
Current assignee: Shanxi Hongda Juyi Machinery Equipment Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-11-29
Anticipated expiration: 2042-09-30
Also published as: CN115401496B

Abstract

The invention relates to the technical field of numerical control machine tool equipment, in particular to an automatic numerical control machine tool, which comprises a shell and a tool changing mechanism arranged in the shell, wherein the tool changing mechanism comprises a support frame, a rotary driving motor, a lifting frame, a first linear driver and a clamping assembly; the support frame can the pivoted be located the inside of casing, be provided with a plurality of equidistance on the support frame and encircle in the fixed subassembly of its central line, a plurality of fixed subassemblies are used for fixed different types of tool bits, setting through support frame and rotary drive motor, make during the tool changing need with required tool bit remove to centre gripping subassembly department can, through linear actuator, crane and centre gripping subassembly's cooperation is changed the tool bit, the weight of whole equipment has been alleviateed, thereby be convenient for the later stage to the maintenance of equipment, setting through the casing, make the equipment be difficult for the part of harm equipment in the piece that the during operation splashes, the life of equipment has been prolonged.

Description

Automatic change digit control machine tool

Technical Field

The invention relates to the technical field of numerical control machine tools, in particular to an automatic numerical control machine tool.

Background

The digit control machine tool is the abbreviation of digital control lathe, and at the in-process that the digit control machine tool carries out work, need often change the cutter, however the speed of present tool changing is relatively slow, needs move the equipment department of tool changing with the knife rest and carries out the tool changing operation for the machining efficiency of digit control machine tool is lower, and the volume that tool changing equipment need store is great moreover, and the structure is complicated, and the cost is higher.

Chinese patent CN111451822B discloses an automatic numerical control machine tool, which comprises a machine tool base, the top of the machine tool base is fixedly mounted with a workbench, the top of the inner cavity of the workbench is fixedly mounted with a mobile station, the front of the mobile station is movably mounted with a tool rest device, the side of the tool rest device is fixedly mounted with a connecting seat, the other end of the connecting seat is fixedly mounted with a hydraulic rod, the bottom of the hydraulic rod is fixedly mounted with an internal sliding seat, the side of the tool rest device is provided with a hydraulic rod, a connecting rod, a bending rod and a movable seat, so that the tools on the clamping seat can be rapidly placed under the tool rest device, thereby solving the technical problems of rapid installation and use of the tools, improving the machining efficiency of the machine tool, but all providing hydraulic cylinders on different types of tool heads of the patent, increasing the cost of production to be put into, simultaneously increasing the weight and volume of the tool rest, increasing the driving force of the mobile tool rest device, and further increasing the maintenance cost of the tool rest device due to the complex structure, so that the later maintenance difficulty of the tool rest is large, and the parts are easily splashed when the tool rest device is used for machining workpieces.

Disclosure of Invention

To above-mentioned problem, an automatic change digit control machine tool is provided, setting through support frame and rotation driving motor for need during the tool changing with required tool bit remove to centre gripping subassembly department can, cooperation through sharp driver, crane and centre gripping subassembly is changed the tool bit, the weight of whole equipment has been alleviateed, thereby be convenient for the later stage to the maintenance of equipment, setting through the casing, make the equipment be difficult for the part of harm equipment in the piece that the during operation splashes, the life of equipment has been prolonged.

In order to solve the problems of the prior art, the invention adopts the technical scheme that:

an automatic numerical control machine tool comprises a shell and a tool changing mechanism arranged in the shell, wherein the tool changing mechanism comprises a support frame, a rotary driving motor, a lifting frame, a first linear driver and a clamping assembly;

the support frame can be rotatably positioned in the shell, a plurality of fixing components which surround the center line of the support frame at equal intervals are arranged on the support frame, and the plurality of fixing components are used for fixing different types of tool bits;

the rotary driving motor is positioned at the top of the shell, and the support frame is in transmission connection with the rotary driving motor;

a cutter holder is arranged in the center of the bottom of the shell;

the lifting frame can be vertically and slidably positioned above the supporting frame;

the clamping assembly is positioned on the lifting frame, a notch is formed in the bottom of the shell and below the clamping assembly, and the clamping assembly is used for driving a tool bit on the supporting frame to penetrate through the notch and placing the tool bit under the tool holder;

the first linear driver is located the side of rotary driving motor, and the crane is connected with the transmission of first linear driver, and the crane is used for driving tool bit and the butt joint of blade holder on the centre gripping subassembly.

Preferably, the central authorities of support frame are provided with the rotation axis, and the rotation axis is the inside that vertical state can the pivoted be located the casing, and the axis of rotation axis and the coaxial setting of the axis of blade holder, be provided with on the support frame with fixed subassembly quantity the same and the one-to-one bracing piece, the radial extension of rotation axis is all followed to a plurality of bracing pieces, the one end of keeping away from fixed subassembly on the bracing piece is provided with the mounting hole, a plurality of fixed subassemblies are located the mounting hole of a plurality of bracing pieces respectively.

Preferably, the top of the rotating shaft is of a hexagonal prism structure, a mounting ring is arranged in the center of the lifting frame, the mounting ring is sleeved on the rotating shaft and connected with the rotating shaft through a bearing, the lifting frame can slide along the axis of the rotating shaft through the mounting ring, a fixing plate extending along the radial direction of the lifting frame is arranged on the mounting ring, and the first linear driver is in transmission connection with the fixing plate.

Preferably, the lifting frame is provided with three supporting legs which surround the axis of the lifting frame at equal intervals, guide rods which are the same in number as the supporting legs and correspond to the supporting legs in a one-to-one mode are arranged inside the shell, the three guide rods are arranged in a vertical state, the three guide rods penetrate through the three supporting legs respectively, and the supporting legs are in sliding fit with the guide rods.

Preferably, the inner wall of mounting hole is provided with a plurality of locating holes that encircle in its axis, and a plurality of fixed subassemblies all include the joint with the same and one-to-one of locating hole quantity, and a plurality of joints overlap respectively and locate a plurality of locating holes, and all are provided with the elastic component on a plurality of joints, the both ends of elastic component respectively with joint and the locating hole in keep away from the one end fixed connection of mounting hole.

Preferably, the centre gripping subassembly includes the second linear actuator, the holding rod, gripper jaw and two swinging arms, the top that just is located the notch on the crane is provided with the dead lever that is the slope setting, the bottom of dead lever is to the central authorities lopsidedness of casing, wherein one end of two swinging arms all articulates on the mounting bracket, and two swinging arms are parallel to each other, the top of holding rod is articulated with the other one end of two swinging arms, and the holding rod is parallel to each other with the dead lever, gripper jaw fixed connection is in the bottom of holding rod, the second linear actuator cover is located on the dead lever, and the one end that is close to the holding rod on one of them swinging arms is connected with dead lever second linear actuator transmission.

Preferably, a sensor for identifying the cutter head is arranged on the lifting frame and beside the clamping assembly.

Preferably, the bottom of supporting rod is provided with the backup pad, and the backup pad is parallel to each other with the bottom surface of casing, and gripper jaw fixed connection is in the below of backup pad, is provided with the card strip that is used for fixed tool bit on the gripper jaw.

Preferably, a fixed shaft, a baffle and a limiting plate are arranged in the notch, the fixed shaft is positioned at one end, far away from the center of the shell, in the notch in a horizontal state and capable of rotating, the baffle is sleeved on the fixed shaft, the limiting plate is positioned above the fixed shaft, and the fixed shaft is elastically connected with the limiting plate.

Preferably, the one side that is close to the notch on the supporting rod is provided with two extension rods, and the one end of keeping away from the supporting rod on two extension rods all is provided with the pulley.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the tool changing device, the supporting frame and the rotary driving motor are arranged, so that a tool bit is required to be moved to the clamping assembly during tool changing, the tool bit is changed through the matching of the linear driver, the lifting frame and the clamping assembly, the weight of the whole device is reduced, the later maintenance of the device is facilitated, the arrangement of the shell enables the fragments splashed when the device works to be not easy to damage parts of the device, and the service life of the device is prolonged.

2. The baffle plate is used for shielding the scraps splashed when the equipment processes the workpiece, so that the equipment is further protected, and the service life of the equipment is prolonged.

Drawings

FIG. 1 is a schematic perspective view of an automated numerical control machine tool as a whole;

FIG. 2 is a schematic perspective view of the inside of a housing in an automated numerical control machine;

FIG. 3 is a schematic sectional view of the whole of an automated numerical control machine tool;

FIG. 4 is a schematic sectional view of an entire automatic numerical control machine tool;

FIG. 5 is a schematic perspective view of a support frame in an automatic numerical control machine;

FIG. 6 is a schematic perspective view of a tool bit in an automated numerical control machine;

FIG. 7 is a schematic view showing a first three-dimensional structure of a crane and a clamping assembly in an automatic numerical control machine;

FIG. 8 is a schematic view of a three-dimensional structure of a crane and a clamping assembly in an automatic numerical control machine;

FIG. 9 is a schematic perspective view of the bottom of the housing in the automatic numerical control machine;

FIG. 10 is a side view of a crane and clamping assembly in an automated numerically controlled machine tool;

FIG. 11 is a partial perspective view of a clamping assembly in an automated numerical control machine;

FIG. 12 is an enlarged view at A in FIG. 3;

fig. 13 is an enlarged view at B in fig. 5.

The reference numbers in the figures are:

1-a shell;

11-a tool apron;

12-notches; 121-a fixed shaft; 122-a baffle; 123-limiting plate;

2-a tool changing mechanism;

21-a support frame; 211-a tool bit; 2111-card slot; 212-a rotary drive motor; 213-a rotation axis; 2131-hexagonal prism; 214-a support bar; 2141-mounting holes; 21411-a positioning hole; 215-a fixed component; 2151-bayonet joint; 2152-an elastic member; 216-a mounting ring; 2161-fixing plate; 217-supporting legs; 2171-guide bar;

22-a lifting frame; 221-a clamping assembly; 2211-a second linear drive; 2212-clamping bar; 2213-support plate; 2214-gripper jaw; 2215-card bar; 2216-an extension bar; 2217-pulleys; 2218-oscillating lever; 2219-fixed bar; 222-a first linear driver; 223-sensor.

Detailed Description

For a better understanding of the features and technical solutions of the present invention, as well as the specific objects and functions attained by the present invention, reference is made to the accompanying drawings and detailed description of the invention.

As shown in fig. 1 to 13: an automatic numerical control machine tool comprises a shell 1 and a tool changing mechanism 2 arranged in the shell 1, wherein the tool changing mechanism 2 comprises a support frame 21, a rotary driving motor 212, a lifting frame 22, a first linear driver 222 and a clamping assembly 221; the support frame 21 is rotatably positioned in the shell 1, a plurality of fixing components 215 surrounding the center line of the support frame 21 at equal intervals are arranged on the support frame 21, and the plurality of fixing components 215 are used for fixing different types of tool bits 211; the rotary driving motor 212 is positioned at the top of the shell 1, and the support frame 21 is in transmission connection with the rotary driving motor 212; a tool apron 11 is arranged at the center of the bottom of the shell 1; the lifting frame 22 can slide vertically and is positioned above the supporting frame 21; the clamping assembly 221 is positioned on the lifting frame 22, a notch 12 is formed in the bottom of the shell 1 and below the clamping assembly 221, and the clamping assembly 221 is used for driving the tool bit 211 on the supporting frame 21 to penetrate through the notch 12 and placing the tool bit 211 under the tool apron 11; the first linear driver 222 is located beside the rotary driving motor 212, the lifting frame 22 is in transmission connection with the first linear driver 222, and the lifting frame 22 is used for driving the cutter head 211 on the clamping component 221 to be in butt joint with the cutter holder 11.

The cutter head 211 is placed in the cutter holder 11 at the bottom of the shell 1, a clamp for automatically clamping the cutter head 211 is arranged in the cutter holder 11, the shell 1 is driven to move by an external driving source, so that the cutter head 211 is driven to process a workpiece, when the cutter head 211 needs to be replaced, the cutter head 221 firstly passes through the notch 12 to move to the side of the cutter holder 11 and clamps the cutter head 211, at the moment, the first linear driver 222 is started, the first linear driver 222 is preferably an air cylinder, the output shaft of the air cylinder stretches out to drive the lifting frame 22 in transmission connection with the air cylinder, so that the lifting frame 22 slides towards the bottom of the shell 1, the clamping assembly 221 is driven to take the cutter head 211 out of the cutter holder 11, the cutter head 211 is driven to return to the shell 1 by the clamping assembly 221, so that the cutter head 211 is placed on the supporting frame 21, and the cutter head 211 is fixed by the fixing assembly 215, after the tool bit 211 is fixed, the rotary driving motor 212 is started, the rotary driving motor 212 drives the supporting frame 21 to rotate, the tool bit 211 to be replaced moves to the side of the clamping component 221, the clamping component 221 drives the tool bit 211 to move to the side of the tool apron 11 again at the moment, the tool bit 211 is located under the tool apron 11, the air cylinder is contracted through the air cylinder at the moment, the lifting frame 22 moves towards the top of the shell 1, the clamping component 221 drives the tool bit 211 to be clamped into the tool apron 11, the tool bit 211 is fixed through a clamp in the tool apron 11, after the tool bit 211 is installed, the clamping component 221 resets to return to the inside of the shell 1, and therefore the whole tool changing step is completed The cooperation of crane 22 and centre gripping subassembly 221 is changed tool bit 211, has alleviateed the weight of whole equipment to the later stage of being convenient for is to the maintenance of equipment, through the setting of casing 1, makes the part of the difficult harm equipment of piece that equipment splashes at the during operation, has prolonged the life of equipment.

As shown in fig. 1 to 6 and 12: the center of support frame 21 is provided with rotation axis 213, rotation axis 213 is the inside that is located casing 1 that vertical state can rotate, and the axis of rotation axis 213 and the coaxial setting of the axis of blade holder 11, be provided with the bracing piece 214 the same and one-to-one with fixed subassembly 215 quantity on the support frame 21, a plurality of bracing pieces 214 all extend along rotation axis 213's radial, the one end of keeping away from fixed subassembly 215 on the bracing piece 214 is provided with mounting hole 2141, a plurality of fixed subassemblies 215 are located the mounting hole 2141 of a plurality of bracing pieces 214 respectively.

Through the setting of rotation axis 213 and a plurality of bracing piece 214, make support frame 21 be located the central authorities of the inside of casing 1, when rotation driving motor 212 drives rotation axis 213 and rotates, rotation axis 213 drives the rotation of support frame 21, the rotation of a plurality of bracing pieces 214 has been driven through the rotation of support frame 21, make mounting hole 2141 rotate around rotation axis 213, mounting hole 2141 drives fixed subassembly 215, thereby drive a plurality of tool bits 211 and rotate around rotation axis 213, be convenient for move the tool bit 211 on the bracing piece 214 to the side of centre gripping subassembly 221, centre gripping in tool bit 211 through centre gripping subassembly 221, through rotation axis 213, bracing piece 214 and mounting hole 2141's setting, make need not to install centre gripping subassembly 221 additional for every tool bit 211 in the casing 1, the overall weight of equipment has been lightened, make the tool bit 211 change more nimble, reduce the input of manufacturing cost.

As shown in fig. 1 to 6, 8 and 10: the top of the rotating shaft 213 is a hexagonal prism 2131 structure, the center of the lifting frame 22 is provided with a mounting ring 216, the mounting ring 216 is sleeved on the rotating shaft 213, the mounting ring 216 is connected with the rotating shaft 213 through a bearing, the lifting frame 22 can slide along the axis of the rotating shaft 213 through the mounting ring 216, the mounting ring 216 is provided with a fixing plate 2161 extending along the radial direction of the mounting ring, and the first linear driver 222 is in transmission connection with the fixing plate 2161.

Through the setting of collar 216 and bearing, when making the rotation driving motor 212 drive rotation axis 213 rotate, crane 22 can not be along with the rotation of support frame 21, only the bearing rotates along with support frame 21, drive fixed plate 2161 through first linear actuator 222, drive collar 216 through fixed plate 2161, collar 216 drives whole crane 22 and slides, because the top of rotation axis 213 is hexagonal prism 2131 structure, make crane 22 can not influence rotation of rotation axis 213 in gliding, the collar 216 cover through crane 22 locates on rotation axis 213, make crane 22 be located the center of casing 1, make when first linear actuator 222 drives crane 22 make drive power more balanced, make crane 22's slip more stable, make the inside structure of casing 1 compacter from this, the better inner space that utilizes casing 1.

As shown in fig. 1 to 6, 7, 8 and 10: the lifting frame 22 is provided with three supporting legs 217 surrounding the axis of the lifting frame at equal intervals, guide rods 2171 which are the same in number as the supporting legs 217 and correspond to the supporting legs one by one are arranged in the shell 1, the three guide rods 2171 are arranged in a vertical state, the three guide rods 2171 penetrate through the three supporting legs 217 respectively, and the supporting legs 217 are in sliding fit with the guide rods 2171.

Probably produce the shake at the gliding in-process of crane 22, thereby influence centre gripping subassembly 221 and drive the cooperation of tool bit 211 with blade holder 11, setting through guide bar 2171 and supporting legs 217, support crane 22 through supporting legs 217, make crane 22 can be stable be located the top of support frame 21, setting through guide bar 2171, make crane 22 when sliding, supporting legs 217 can only slide along the axis of guide bar 2171, make crane 22 can not the skew at gliding in-process, it can be stable cooperate with blade holder 11 to ensure centre gripping subassembly 221 on crane 22, improve the stability of equipment.

As shown in fig. 1 to 3 and 12: the inner wall of mounting hole 2141 is provided with a plurality of locating holes 21411 that encircle in its axis, and a plurality of fixed subassemblies 215 all include the joint 2151 that is the same with locating hole 21411 quantity and one-to-one, and a plurality of joint 2151 are respectively overlapped in a plurality of locating holes 21411, and all are provided with elastic component 2152 on a plurality of joint 2151, and elastic component 2152's both ends respectively with joint 2151 and the one end fixed connection who keeps away from mounting hole 2141 in the locating hole 21411.

Be provided with the draw-in groove 2111 that matches each other with joint 2151 on the tool bit 211, when making tool bit 211 be located mounting hole 2141, joint 2151 holds down in the top of elastic component 2152, joint 2151 card is gone into in the draw-in groove 2111 on tool bit 211, make tool bit 211 can remove along with support frame 21, when centre gripping subassembly 221 drives tool bit 211 and removes, the removal of tool bit 211 can drive joint 2151 and remove, joint 2151 can extrude elastic component 2152 this moment, make joint 2151 remove to the inside to locating hole 21411, be convenient for taking out of tool bit 211 from this, setting through joint 2151 and elastic component 2152, make tool bit 211 can be fixed in mounting hole 2141, be convenient for simultaneously that centre gripping subassembly 221 gets and puts in tool bit 211.

As shown in fig. 1 to 4, 7, 8, 10 and 11: the clamping assembly 221 includes a second linear actuator 2211, a clamping rod 2212, a clamping claw 2214 and two swinging rods 2218, a fixing rod 2219 disposed obliquely above the slot 12 on the crane 22, the bottom of the fixing rod 2219 inclines toward one side of the center of the housing 1, one end of each of the two swinging rods 2218 is hinged to the mounting frame, the two swinging rods 2218 are parallel to each other, the top end of the clamping rod 2212 is hinged to the other end of the two swinging rods 2218, the clamping rod 2212 is parallel to the fixing rod 2219, the clamping claw 2214 is fixedly connected to the bottom end of the clamping rod 2212, the second linear actuator 2211 is sleeved on the fixing rod 2219, and one end of one of the swinging rods 2218, which is close to the clamping rod 2212, is in transmission connection with the second linear actuator 2211 of the fixing rod 2219.

When the clamping assembly 221 is required to drive the tool bit 211 to move to a position right below the tool apron 11, by activating the second linear actuator 2211, the second linear actuator 2211 is preferably an air cylinder, the output shaft of the air cylinder extends out to drive one of the swing rods 2218 connected thereto, because the swing rods 2218 are hinged to the fixing rod 2219, the swing rods 2218 rotate with a hinge point on the swing rod 2219 and a hinge point on the fixing rod 2219 as a circle center, so that the swing rods 2218 rotate towards the bottom of the housing 1, because the two swing rods 2218 are parallel to each other, so that the two swing rods 2218 are simultaneously driven and drive the clamping rods 2212 to the lateral sides of the tool apron 11, because the clamping rods 2212 are parallel to the fixing rod 2219, and the bottom of the fixing rod 2219 inclines towards the central side of the housing 1, when the clamping rods 2212 move towards the bottom of the housing 1, so that the bottom ends of the clamping rods 2212 synchronously move towards the center of the housing 1, so as to drive the clamping jaws 2214 at the bottom ends of the clamping rods 2212 to be close to the tool apron 11, so that the tool bit 211 on the clamping jaw 2214 on the tool apron 4 is located right below the tool apron 11, at this time, the moment, the clamping assembly 221 moves, so that the clamping assembly 221 moves along the clamping rod 2212, the clamping assembly 221, so that the clamping rod 22121 of the clamping rod 2212 moves to drive the clamping rod 2212 in the clamping support frame, and the clamping cylinder, so that the clamping cylinder, the clamping rod 22121 of the clamping support holder can be conveniently to move, and the clamping cylinder, and the clamping rod 2212, so that the clamping rod 2212 can be conveniently replaced, and the tool bit can be conveniently placed in the cylinder, and the clamp holder can be conveniently replaced, and the clamp holder can be conveniently placed in the supporting frame, and the supporting frame 2212, and the supporting frame can be conveniently replaced by moving direction of the supporting frame 2212.

As shown in fig. 1 to 4 and 8: a sensor 223 for identifying the tool bit 211 is provided on the crane 22 at a side of the gripping assembly 221.

Drive rotation axis 213 through rotation driving motor 212 and rotate, thereby drive support frame 21 and rotate, drive bracing piece 214 through support frame 21, make a plurality of bracing pieces 214 one by one pass through sensor 223 with tool bit 211, after sensor 223 discerned tool bit 211, signal transmission with discernment gives the controller of rear end, transmit the signal of telecommunication for rotation driving motor 212 through the controller, make rotation driving motor 212 stop, from this the completion is to the removal of tool bit 211, be convenient for the centre gripping subassembly 221 is to getting in tool bit 211's clamp.

As shown in fig. 1 to 4, 7, 8, 10 and 11: the bottom of the clamping rod 2212 is provided with a supporting plate 2213, the supporting plate 2213 is parallel to the bottom of the housing 1, the clamping jaw 2214 is fixedly connected below the supporting plate 2213, and the clamping jaw 2214 is provided with a clamping strip 2215 for fixing the tool bit 211.

The gripper 2214 is preferably a pneumatic gripper, and is parallel to the bottom surface of the housing 1 through the support plate 2213, so that the gripper 2214 is in a horizontal state, so that the gripper 2214 can clamp the tool, and through the arrangement of the clamp strip 2215, the gripper 2214 can clamp the tool bit 211 more stably, and meanwhile, the tool bit 211 can be kept in a vertical state when clamped, so that the gripper can be clamped into the tool holder 11.

As shown in fig. 1 to 4, 7, 8, 10 and 11: a fixing shaft 121, a baffle plate 122 and a limiting plate 123 are arranged in the notch 12, the fixing shaft 121 is positioned at one end, far away from the center of the shell 1, in the notch 12 in a horizontal state in a rotatable manner, the baffle plate 122 is sleeved on the fixing shaft 121, the limiting plate 123 is positioned above the fixing shaft 121, and the fixing shaft 121 is elastically connected with the limiting plate 123.

Through elastic connection between fixed axle 121 and the limiting plate 123, baffle 122 is preferably connected with limiting plate 123 through the torsional spring, make centre gripping subassembly 221 can open baffle 122 when passing through notch 12, when centre gripping subassembly 221 returns to casing 1 in, baffle 122 resets under elastic effect, the piece that splashes when adding the work piece to equipment through baffle 122 shelters from, further protective apparatus, extend the life of equipment, setting through limiting plate 123 is spacing to the rotation of baffle 122, make baffle 122 stop by limiting plate 123 when rotating to casing 1 is inside, make the top surface of baffle 122 and the bottom inner wall of casing 1 keep the parallel and level.

As shown in fig. 3, 4, 10 and 11: one side of the clamping rod 2212 close to the notch 12 is provided with two extension rods 2216, and one end of each extension rod 2216 far away from the clamping rod 2212 is provided with a pulley 2217.

Since the clamping assembly 221 pushes the baffle 122 open when passing through the slot 12, if the clamping assembly is directly contacted with the baffle 122 to push the baffle 122 open, the baffle 122 may be damaged, and through the arrangement of the extension rod 2216 and the pulley 2217, when the clamping rod 2212 pushes the baffle 122 open, the pulley 2217 is contacted with the top surface of the baffle 122, so that the friction between the clamping rod 2212 and the baffle 122 is reduced, and the service life of the device is prolonged.

The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An automatic numerical control machine tool comprises a shell (1) and a tool changing mechanism (2) arranged in the shell (1), and is characterized in that the tool changing mechanism (2) comprises a support frame (21), a rotary driving motor (212), a lifting frame (22), a first linear driver (222) and a clamping assembly (221);

the support frame (21) can be rotatably positioned in the shell (1), a plurality of fixing assemblies (215) which surround the center line of the support frame (21) at equal intervals are arranged on the support frame (21), and the plurality of fixing assemblies (215) are used for fixing different types of tool bits (211);

the rotary driving motor (212) is positioned at the top of the shell (1), and the support frame (21) is in transmission connection with the rotary driving motor (212);

a tool apron (11) is arranged in the center of the bottom of the shell (1);

the lifting frame (22) can be vertically and slidably positioned above the supporting frame (21);

the clamping assembly (221) is positioned on the lifting frame (22), a notch (12) is formed in the bottom of the shell (1) and below the clamping assembly (221), and the clamping assembly (221) is used for driving a tool bit (211) on the supporting frame (21) to penetrate through the notch (12) and placing the tool bit (211) right below the tool apron (11);

the first linear driver (222) is located on the side of the rotary driving motor (212), the lifting frame (22) is in transmission connection with the first linear driver (222), and the lifting frame (22) is used for driving the cutter head (211) on the clamping assembly (221) to be in butt joint with the cutter holder (11).

2. The automatic numerical control machine according to claim 1, wherein a rotating shaft (213) is disposed in the center of the support frame (21), the rotating shaft (213) is vertically and rotatably disposed inside the housing (1), an axis of the rotating shaft (213) and an axis of the tool holder (11) are coaxially disposed, the support frame (21) is provided with support rods (214) having the same number as the fixing assemblies (215) and corresponding to each other one by one, the plurality of support rods (214) all extend along a radial direction of the rotating shaft (213), one end of each support rod (214) far away from the fixing assembly (215) is provided with a mounting hole (2141), and the plurality of fixing assemblies (215) are respectively disposed in the mounting holes (2141) of the plurality of support rods (214).

3. The automatic numerical control machine according to claim 2, characterized in that the top of the rotating shaft (213) is a hexagonal prism (2131) structure, the center of the crane (22) is provided with a mounting ring (216), the mounting ring (216) is sleeved on the rotating shaft (213), the mounting ring (216) is connected with the rotating shaft (213) through a bearing, the crane (22) can slide along the axis of the rotating shaft (213) through the mounting ring (216), the mounting ring (216) is provided with a fixing plate (2161) extending along the radial direction of the mounting ring, and the first linear driver (222) is in transmission connection with the fixing plate (2161).

4. The automatic numerical control machine tool according to claim 3, characterized in that the lifting frame (22) is provided with three supporting legs (217) surrounding the axis of the lifting frame at equal intervals, guide rods (2171) which are the same in number as the supporting legs (217) and correspond to the supporting legs one by one are arranged in the shell (1), the three guide rods (2171) are all arranged in a vertical state, the three guide rods (2171) penetrate through the three supporting legs (217) respectively, and the supporting legs (217) are in sliding fit with the guide rods (2171).

5. The automatic numerical control machine tool according to claim 2, characterized in that the inner wall of the mounting hole (2141) is provided with a plurality of positioning holes (21411) surrounding the axis thereof, the plurality of fixing components (215) each comprise a plurality of clamping heads (2151) which are the same in number as the positioning holes (21411) and correspond to one another one by one, the plurality of clamping heads (2151) are respectively sleeved in the plurality of positioning holes (21411), the plurality of clamping heads (2151) are respectively provided with an elastic member (2152), and two ends of the elastic member (2152) are respectively fixedly connected with the clamping heads (2151) and one end of the positioning holes (21411) far away from the mounting hole (2141).

6. The automatic numerical control machine according to any one of claims 1 to 5, characterized in that the clamping assembly (221) comprises a second linear actuator (2211), a clamping rod (2212), a clamping jaw (2214) and two swinging rods (2218), an obliquely arranged fixing rod (2219) is arranged on the lifting frame (22) and above the slot (12), the bottom of the fixing rod (2219) inclines to one side of the center of the housing (1), one end of each of the two swinging rods (2218) is hinged to the mounting frame, the two swinging rods (2218) are parallel to each other, the top end of the clamping rod (2212) is hinged to the other end of the two swinging rods (2218), the clamping rod (2212) is parallel to the fixing rod (2219), the clamping jaw (2214) is fixedly connected to the bottom end of the clamping rod (2212), the second linear actuator (2211) is sleeved on the fixing rod (2219), and one end of one swinging rod (2218) close to the clamping rod (2212) is connected with the second linear actuator (2211).

7. An automated numerically controlled machine according to any one of claims 1 to 5, characterized in that a sensor (223) for identifying the tool bit (211) is provided on the crane (22) at the side of the clamping assembly (221).

8. The automatic numerically-controlled machine tool according to claim 6, characterized in that the bottom of the clamping rod (2212) is provided with a support plate (2213), the support plate (2213) is parallel to the bottom of the housing (1), the clamping jaw (2214) is fixedly connected below the support plate (2213), and the clamping jaw (2214) is provided with a clamping strip (2215) for fixing the tool bit (211).

9. The automatic numerical control machine according to claim 6, characterized in that a fixed shaft (121), a baffle plate (122) and a limiting plate (123) are arranged in the notch (12), the fixed shaft (121) is horizontally and rotatably positioned at one end of the notch (12) far away from the center of the shell (1), the baffle plate (122) is sleeved on the fixed shaft (121), the limiting plate (123) is positioned above the fixed shaft (121), and the fixed shaft (121) is elastically connected with the limiting plate (123).

10. The automatic numerically-controlled machine tool according to claim 6, characterized in that two extension rods (2216) are arranged on the side of the clamping rod (2212) close to the notch (12), and a pulley (2217) is arranged on each end of the two extension rods (2216) far away from the clamping rod (2212).