CN210878770U - Tool changing mechanism of precise linear guide rail milling machine - Google Patents
Tool changing mechanism of precise linear guide rail milling machine Download PDFInfo
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- CN210878770U CN210878770U CN201921568009.7U CN201921568009U CN210878770U CN 210878770 U CN210878770 U CN 210878770U CN 201921568009 U CN201921568009 U CN 201921568009U CN 210878770 U CN210878770 U CN 210878770U
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Abstract
The utility model belongs to the technical field of machinery, especially, relate to a tool changing mechanism of accurate linear guide milling machine. The utility model discloses, including the mount, the mount on be equipped with the movable plate that can follow straight reciprocating motion, the movable plate on be equipped with the tool bit anchor clamps that can follow vertical direction reciprocating motion, the mount on still be equipped with the tool magazine seat, the tool magazine seat in be equipped with the cutter that can press from both sides tight or relax the cutter and lay the subassembly, the cutter lay the position of subassembly and tool bit anchor clamps corresponding. The utility model discloses a reciprocating type operation of circulation can place many cutters, and tool changing efficiency and positioning accuracy are high, and simple structure is compact, and the centre gripping is effectual, uses manpower sparingly, reduces intensity of labour.
Description
Technical Field
The utility model belongs to the technical field of machinery, a tool changing mechanism of accurate linear guide milling machine is related to.
Background
The automatic tool changer of the numerical control machining center can select different tools from the tool magazine to be installed on the main shaft according to the actual production and machining requirements, tool changing actions are automatically completed, the working efficiency is improved, and the installation precision is increased. However, the automatic tool changer of the numerical control machining center in the current market is mostly a multi-degree-of-freedom manipulator, and not only is the control complex and the maintenance inconvenient, but also the cost is higher. Some existing low-freedom-degree mechanical arms are low in positioning accuracy and repeated positioning accuracy, clamping effects of the clamping mechanisms are poor, and the number of the tools is small.
In order to overcome the defects of the prior art, people continuously explore and propose various solutions, for example, a tool changing mechanism is disclosed in a chinese patent application No.: 201721923440.X ], the tool changer comprises a base and a tool changing arm which can be driven by the base to rotate up and down, the tool changing arm is provided with a lifting and sliding jacking part, the jacking part is provided with a mandril, the mandril penetrates through the top surface of the tool changing arm and is pressed against the base when the tool changing arm moves up and down, the mandril is sleeved with a water stopping part, and the water stopping part is pressed between the tool changing arm and the base after the tool changing arm moves up. However, the scheme still has the defects of low positioning precision and repeated positioning precision, poor clamping effect of the clamping mechanism and small number of tools.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide a tool changing mechanism of accurate linear guide milling machine.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model provides a tool changing mechanism of accurate linear guide milling machine, includes the mount, the mount on be equipped with the movable plate that can follow straight reciprocating motion, the movable plate on be equipped with the tool bit anchor clamps that can follow vertical direction reciprocating motion, the mount on still be equipped with the tool magazine seat, the tool magazine seat in be equipped with the cutter that can press from both sides tight or relax the cutter and lay the subassembly, the cutter lay the position of subassembly and tool bit anchor clamps corresponding.
In the tool changing mechanism of the precise linear guide rail milling machine, the tool placing component comprises a tool moving plate which is arranged in a tool magazine seat and can move in a reciprocating manner along a straight line, a plurality of tool fixing plates are arranged on the tool magazine seat, and a plurality of tool clamping plates are arranged at the top of the tool moving plate.
In foretell precision linear guide milling machine's tool changing mechanism, cutter splint and cutter fixed plate top be the step form, every cutter splint corresponds a cutter fixed plate, the tool magazine seat in be equipped with the push pedal groove, the push pedal inslot be equipped with the cutter push pedal that can follow vertical direction reciprocating linear motion, the movable plate in still be equipped with the button piece that can follow vertical direction reciprocating linear motion.
In the tool changing mechanism of the precise linear guide rail milling machine, one end of the tool moving plate is provided with a first spring fixedly connected with the inner wall of the tool magazine base, the other end of the tool moving plate is provided with an inclined plane which can be in sliding fit with the tool pushing plate, the bottom of the button block is in an inclined plane shape, the moving plate is internally provided with a first linear driver, and a power shaft of the first linear driver is fixedly connected with the button block.
In the tool changing mechanism of the precise linear guide rail milling machine, the tool push plate is fixedly connected with a first limiting block, the end part of the first limiting block is fixedly connected with a second spring, one end of the tool push plate, far away from the first limiting block, is provided with a clamping groove, one side, far away from the first spring, of the tool push plate groove is connected with a clamping sliding groove, and the clamping sliding groove is internally provided with a clamping block capable of moving linearly and reciprocally.
In the tool changing mechanism of the precise linear guide rail milling machine, the clamping block is matched with the clamping groove in shape, a plurality of second limiting blocks symmetrical along the central line of the clamping block are arranged on the clamping block, and a third spring is arranged at the end part of each second limiting block.
In foretell precision linear guide milling machine's tool changing mechanism, the screens spout keep away from push plate groove one side and be connected with the rotation chamber, the rotatable line wheel that is equipped with of rotation intracavity, the line wheel around being equipped with the acting as go-between, act as go-between keep away from line wheel one end and screens piece fixed connection, the rotation intracavity still be equipped with the straight-teeth gear, straight-teeth gear and line wheel be connected through the pivot.
In the tool changing mechanism of the precise linear guide rail milling machine, the rotation cavity is connected with an unlocking sliding groove on one side of the clamping sliding groove, the unlocking sliding groove is internally provided with an unlocking rack capable of moving along a straight line in a reciprocating manner, the unlocking rack can be meshed with a straight gear in a matching manner, the unlocking rack is provided with a plurality of third limiting blocks symmetrical along the central line of the unlocking rack, and the end part of each third limiting block is connected with a fourth spring.
In the tool changing mechanism of the precise linear guide rail milling machine, a second linear driver is arranged in the fixed frame, a power shaft of the second linear driver is fixedly connected with the moving plate, a third linear driver is arranged in the moving plate, the bottom of the power shaft of the third linear driver is connected with a driving seat, a circumferential driver is arranged in the driving seat, and a rotating shaft of the circumferential driver is fixedly connected with the tool bit clamp.
In the tool changing mechanism of the precise linear guide rail milling machine, the unlocking rack and the top of the tool push plate are arc-shaped, and the bottom of the button block is also arc-shaped.
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses a reciprocating type operation of circulation can place many cutters, and tool changing efficiency and positioning accuracy are high, and simple structure is compact, and the centre gripping is effectual, uses manpower sparingly, reduces intensity of labour.
2. The utility model discloses a set up cutter splint and the cutter fixed plate that the top is the step form, it is better to the tight effect of clamp of cutter, can not cause the damage to the cutter surface at the clamp in-process simultaneously.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged schematic view at a in fig. 1.
Fig. 3 is an enlarged schematic view at B in fig. 2.
In the figure: the tool magazine comprises a fixed frame 1, a moving plate 2, a tool bit clamp 3, a tool magazine seat 4, a tool placing assembly 5, a tool moving plate 6, a tool fixing plate 7, a tool clamping plate 8, a push plate groove 9, a tool push plate 10, a button block 11, a first spring 12, a first linear driver 13, a first limit block 14, a second spring 15, a clamping groove 16, a clamping sliding groove 17, a clamping block 18, a second limit block 19, a third spring 20, a rotating cavity 21, a wire wheel 22, a pull wire 23, a straight gear 24, an unlocking sliding groove 25, an unlocking rack 26, a third limit block 27, a fourth spring 28, a second linear driver 29, a third linear driver 30, a driving seat 31, a circumferential driver 32 and a tool 100.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, a tool changing mechanism of a precise linear guide rail milling machine comprises a fixing frame 1, wherein a moving plate 2 capable of moving along a linear reciprocating motion is arranged on the fixing frame 1, a tool bit clamp 3 capable of moving along a vertical direction reciprocating motion is arranged on the moving plate 2, a tool magazine seat 4 is further arranged on the fixing frame 1, a tool placing component 5 capable of clamping or loosening a tool 100 is arranged in the tool magazine seat 4, and the tool placing component 5 corresponds to the tool bit clamp 3.
In this embodiment, when the user needs to replace the tool on the tool bit fixture 3, the tool 100 placed on the tool magazine base 4 is loosened through the tool placing assembly 5, at the moment, the tool bit fixture 3 is moved to the tool placing assembly 5, the required tool 100 in the loosening state is clamped through the tool bit fixture 3, the tool placing assembly 5 returns to the clamping state after the clamping is convenient to use, the tool 100 located on the tool magazine base 4 is clamped and fixed, the circular reciprocating operation is completed, a plurality of tools can be placed, the tool changing efficiency and the positioning accuracy are high, the structure is simple and compact, the clamping effect is good, the manpower is saved, the labor intensity is reduced, the technical personnel in the field can understand that the tool bit fixture 3 can adopt a spindle chuck with a clamping mechanism in a numerical control machine.
Referring to fig. 1, the tool placing assembly 5 includes a tool moving plate 6 disposed in the tool magazine base 4 and capable of reciprocating along a straight line, the tool magazine base 4 is provided with a plurality of tool fixing plates 7, and the top of the tool moving plate 6 is provided with a plurality of tool clamping plates 8.
Specifically, when the tool 100 on the tool magazine base 4 needs to be clamped or unclamped, the tool moving plate 6 is moved to move the tool clamping plate 8 to a side close to or far away from the tool fixing plate 7, so that the process of clamping or unclamping the tool is completed, and the operation is simple and convenient.
Referring to fig. 1 and 2, the tops of the tool clamping plates 8 and the tool fixing plates 7 are step-shaped, each tool clamping plate 8 corresponds to one tool fixing plate 7, a push plate groove 9 is formed in the tool magazine base 4, a tool push plate 10 capable of linearly reciprocating in the vertical direction is arranged in the push plate groove 9, and a button block 11 capable of linearly reciprocating in the vertical direction is further arranged in the moving plate 2.
In this embodiment, cutter clamping plate 8 and cutter fixing plate 7 top are the step form, and every cutter clamping plate 8 corresponds a cutter fixing plate 7, and is better to the tight effect of clamp of cutter 100, can not cause the damage to the cutter surface simultaneously at the tight in-process of clamp, can press cutter push pedal 10 through button piece 11 for cutter push pedal 10 removes, and then can promote cutter moving plate 6 through removing cutter push pedal 10 and carry out straight reciprocating motion, accomplishes the clamp of cutter 100 or unclamps.
The automatic tool magazine is characterized in that one end of the tool moving plate 6 is provided with a first spring 12 fixedly connected with the inner wall of the tool magazine base 4, the other end of the tool moving plate 6 is provided with an inclined plane which can be in sliding fit with the tool pushing plate 10, the bottom of the button block 11 is in an inclined plane shape, the moving plate 2 is internally provided with a first linear driver 13, and a power shaft of the first linear driver 13 is fixedly connected with the button block 11.
In this embodiment, when the tool pushing plate 10 needs to move down, the first linear actuator 13 is started, the power shaft of the first linear actuator 13 drives the button block 11 to press down the tool pushing plate 10, the inclined plane at the bottom of the tool pushing plate 10 is matched with the inclined plane at the end of the tool moving plate 6, so as to push the tool moving plate 6 to move right, and the tool 100 is released, and after the tool pushing plate 10 moves up, the first spring 12 plays a role in resetting, so that the tool moving plate 6 recovers to the initial position, and clamps the tool 100 again, and those skilled in the art should understand that the first linear actuator 13 may be an air cylinder, an oil cylinder, or a linear motor.
It is shown with reference to fig. 2 and 3 that combine, cutter push pedal 10 on first stopper 14 of fixedly connected with, 14 end fixedly connected with second spring 15 of first stopper, cutter push pedal 10 keep away from first stopper 14 one end and be equipped with screens groove 16, push pedal groove 9 keep away from first spring 12 one side and be connected with screens spout 17, screens spout 17 in be equipped with the screens piece 18 that can follow straight reciprocating motion.
In this embodiment, the first limiting block 14 limits the tool pushing plate 10 to prevent the tool pushing plate 10 from deviating in position during movement, the second spring 15 resets, and when the clamping block 18 is inserted into the clamping groove 16, the clamping block 18 and the clamping groove 16 can be in clamping fit with each other, so that the tool pushing plate 10 remains stationary.
Referring to fig. 2 and 3, the shape of the locking block 18 is matched with that of the locking groove 16, the locking block 18 is provided with a plurality of second locking blocks 19 symmetrical along the center line of the locking block 18, and the end of each second locking block 19 is provided with a third spring 20.
In this embodiment, the second limiting block 19 has a limiting effect on the position-locking block 18, so as to prevent the position deviation of the position-locking block 1 in the moving process, and the third spring 20 has a resetting effect.
Screens spout 17 keep away from push plate groove 9 one side and be connected with rotation chamber 21, rotation chamber 21 in rotatable be equipped with line wheel 22, line wheel 22 around being equipped with 23 of acting as go-between, 23 act as go-between keep away from line wheel 22 one end and screens piece 18 fixed connection, rotation chamber 21 in still be equipped with straight-teeth gear 24, straight-teeth gear 24 be connected through the pivot with line wheel 22.
In this embodiment, when the position-locking block 18 inserted into the position-locking groove 16 needs to be pulled out, the spur gear 24 is rotated, the wire wheel 22 is driven to rotate by the connection action of the rotating shaft, and the position-locking block 18 is pulled out of the position-locking groove 16 by the pull wire 23, so that the position-locking state is released, and the cutter push plate 10 can be moved up again.
It is shown in combination with fig. 3, rotation chamber 21 keep away from screens spout 17 one side and be connected with unblock spout 25, unblock spout 25 in be equipped with and follow straight reciprocating motion's unblock rack 26, unblock rack 26 can mesh the cooperation with straight-teeth gear 24 mutually, unblock rack 26 on be equipped with a plurality of third stoppers 27 along unblock rack 26 central line symmetry, third stopper 27 end connection have fourth spring 28.
Specifically, when the spur gear 24 needs to be rotated, the button block 11 is moved to press the unlocking rack 26, the engagement fit between the unlocking rack 26 and the spur gear 24 drives the spur gear 24 to rotate, the clamping state is released, the third limiting block 27 limits the unlocking rack 26, the unlocking rack 26 is prevented from position deviation in the moving process, and the fourth spring 28 plays a resetting role.
Referring to fig. 1, a second linear actuator 29 is arranged in the fixed frame 1, a power shaft of the second linear actuator 29 is fixedly connected with the moving plate 2, a third linear actuator 30 is arranged in the moving plate 2, a driving seat 31 is connected to the bottom of the power shaft of the third linear actuator 30, a circumferential actuator 32 is arranged in the driving seat 31, and a rotating shaft of the circumferential actuator 32 is fixedly connected with the tool bit fixture 3.
In this embodiment, when the moving plate 2 needs to be moved, the second linear actuator 29 is started, the moving plate 2 is driven by the power shaft of the second linear actuator 29 to realize linear motion in the horizontal direction, when the tool bit fixture 3 needs to be moved, the third linear actuator 30 is started, the driving base 31, the circumferential actuator 32 and the tool bit fixture 3 are driven by the power shaft of the third linear actuator 30 to realize linear motion in the vertical direction, but when the tool bit fixture 3 needs to be rotated, the circumferential actuator 32 is started, and the tool bit fixture 3 is driven to rotate by the rotation shaft of the circumferential actuator 32, it should be understood by those skilled in the art that the second linear actuator 29 and the third linear actuator 30 may be an air cylinder, an oil cylinder or a linear motor, and the circumferential actuator 32 may be a motor.
As shown in fig. 1, the unlocking rack 26 and the top of the tool pushing plate 10 are arc-shaped, and the bottom of the button block 11 is also arc-shaped, so that the button block 11 cannot slide when pressing the unlocking rack 26 and the tool pushing plate 10, and the pressing effect is good.
The utility model discloses a theory of operation is:
when a user needs to replace a cutter on the cutter head clamp 3, the second linear driver 29 is started, the movable plate 2 is driven by a power shaft of the second linear driver 29 to realize linear motion in the horizontal direction, so that the button block 11 moves to the position right above the cutter push plate 10, the first linear driver 13 is started at the moment, the button block 11 is driven by the power shaft of the first linear driver 13 to press the cutter push plate 10 downwards, the inclined surface at the bottom of the cutter push plate 10 is matched with the inclined surface at the end part of the cutter movable plate 6 to push the cutter movable plate 6 to move rightwards, the cutter 100 is loosened, the clamping block 18 is inserted into the clamping groove 16 at the moment, the clamping block 18 and the clamping groove 16 can realize clamping matching, the cutter push plate 10 is kept still, the cutter head clamp 3 is moved to the position right above the required cutter, the third linear driver 30 is started, and the driving seat 31, the driving seat and the driving seat are driven, The circumferential driver 32 and the tool bit holder 3 move downwards, the button block 11 is moved to the position right above the unlocking rack 26 after the tool bit holder 3 clamps the tool, at the moment, the button block 11 is moved downwards, the unlocking rack 26 is moved downwards through the button block 11, the straight gear 24 is driven to rotate through the meshing fit between the unlocking rack 26 and the straight gear 24, the wire wheel 22 is driven to rotate through the connection action of the rotating shaft, the clamping block 18 is further pulled out of the clamping groove 16 through the pull wire 23, the clamping state is released, the cutter push plate 10 can move upwards again, when the cutter push plate 10 moves upwards, the first spring 12 plays a role of resetting, so that the cutter moving plate 6 restores to the initial position, the cutter 100 is clamped again, the circular reciprocating operation is completed, can place many cutters, tool changing efficiency and positioning accuracy are high, simple structure is compact, and the centre gripping is effectual, uses manpower sparingly, reduces intensity of labour.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the spirit of the invention.
Although the terms of the fixed frame 1, the moving plate 2, the bit holder 3, the tool magazine base 4, the tool mounting assembly 5, the tool moving plate 6, the tool fixing plate 7, the tool clamping plate 8, the push plate groove 9, the tool push plate 10, the button block 11, the first spring 12, the first linear actuator 13, the first stopper 14, the second spring 15, the clamping groove 16, the clamping slide groove 17, the clamping block 18, the second stopper 19, the third spring 20, the rotation cavity 21, the pulley 22, the pull wire 23, the spur gear 24, the unlocking slide groove 25, the unlocking rack 26, the third stopper 27, the fourth spring 28, the second linear actuator 29, the third linear actuator 30, the driving base 31, the circumferential actuator 32, the tool 100, etc., are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.
Claims (10)
1. The utility model provides a tool changing mechanism of accurate linear guide milling machine, includes mount (1), its characterized in that, mount (1) on be equipped with movable plate (2) that can follow straight reciprocating motion, movable plate (2) on be equipped with tool bit anchor clamps (3) that can follow vertical direction reciprocating motion, mount (1) on still be equipped with tool magazine seat (4), tool magazine seat (4) in be equipped with cutter placing assembly (5) that can press from both sides tightly or relax cutter (100), cutter placing assembly (5) corresponding with the position of tool bit anchor clamps (3).
2. The tool changing mechanism of the precise linear guide rail milling machine according to claim 1, wherein the tool placing component (5) comprises a tool moving plate (6) which is arranged in a tool magazine seat (4) and can reciprocate along a straight line, a plurality of tool fixing plates (7) are arranged on the tool magazine seat (4), and a plurality of tool clamping plates (8) are arranged at the top of the tool moving plate (6).
3. The tool changing mechanism of the precise linear guide rail milling machine according to claim 2, characterized in that the tops of the tool clamping plates (8) and the tool fixing plates (7) are step-shaped, each tool clamping plate (8) corresponds to one tool fixing plate (7), a push plate groove (9) is arranged in the tool magazine base (4), a tool push plate (10) capable of reciprocating linearly in the vertical direction is arranged in the push plate groove (9), and a button block (11) capable of reciprocating linearly in the vertical direction is further arranged in the moving plate (2).
4. The tool changing mechanism of the precise linear guide rail milling machine according to claim 3, characterized in that one end of the tool moving plate (6) is provided with a first spring (12) fixedly connected with the inner wall of the tool magazine base (4), the other end of the tool moving plate (6) is provided with an inclined plane which can be in sliding fit with the tool pushing plate (10), the bottom of the button block (11) is in an inclined plane shape, the moving plate (2) is internally provided with a first linear driver (13), and a power shaft of the first linear driver (13) is fixedly connected with the button block (11).
5. The tool changing mechanism of the precise linear guide rail milling machine according to claim 4, characterized in that a first limiting block (14) is fixedly connected to the tool pushing plate (10), a second spring (15) is fixedly connected to the end of the first limiting block (14), a clamping groove (16) is formed in one end, away from the first limiting block (14), of the tool pushing plate (10), a clamping sliding groove (17) is connected to one side, away from the first spring (12), of the pushing plate groove (9), and a clamping block (18) capable of reciprocating along a straight line is arranged in the clamping sliding groove (17).
6. The tool changing mechanism of the precise linear guide milling machine according to claim 5, characterized in that the shape of the clamping block (18) is matched with that of the clamping groove (16), a plurality of second limiting blocks (19) symmetrical along the center line of the clamping block (18) are arranged on the clamping block (18), and a third spring (20) is arranged at the end part of each second limiting block (19).
7. The tool changing mechanism of the precise linear guide milling machine according to claim 5, characterized in that one side of the clamping sliding groove (17) far away from the push plate groove (9) is connected with a rotating cavity (21), the rotating cavity (21) is internally provided with a rotatable wire wheel (22), the wire wheel (22) is wound with a pull wire (23), the pull wire (23) is far away from one end of the wire wheel (22) and fixedly connected with the clamping block (18), the rotating cavity (21) is internally provided with a straight gear (24), and the straight gear (24) is connected with the wire wheel (22) through a rotating shaft.
8. The tool changing mechanism of the precise linear guide milling machine according to claim 7, characterized in that one side of the rotating cavity (21) far away from the clamping chute (17) is connected with an unlocking chute (25), an unlocking rack (26) capable of moving linearly in a reciprocating manner is arranged in the unlocking chute (25), the unlocking rack (26) can be meshed with the spur gear (24) for matching, a plurality of third limiting blocks (27) symmetrical along the center line of the unlocking rack (26) are arranged on the unlocking rack (26), and the end of each third limiting block (27) is connected with a fourth spring (28).
9. The tool changing mechanism of the precise linear guide rail milling machine according to claim 1, characterized in that a second linear driver (29) is arranged in the fixed frame (1), a power shaft of the second linear driver (29) is fixedly connected with the movable plate (2), a third linear driver (30) is arranged in the movable plate (2), a driving seat (31) is connected to the bottom of the power shaft of the third linear driver (30), a circumferential driver (32) is arranged in the driving seat (31), and a rotating shaft of the circumferential driver (32) is fixedly connected with the tool bit clamp (3).
10. The tool changing mechanism of a precision linear guide milling machine according to claim 8, wherein the top of the unlocking rack (26) and the top of the tool pushing plate (10) are arc-shaped, and the bottom of the button block (11) is also arc-shaped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921568009.7U CN210878770U (en) | 2019-09-19 | 2019-09-19 | Tool changing mechanism of precise linear guide rail milling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921568009.7U CN210878770U (en) | 2019-09-19 | 2019-09-19 | Tool changing mechanism of precise linear guide rail milling machine |
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| CN210878770U true CN210878770U (en) | 2020-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975512A (en) * | 2021-01-28 | 2021-06-18 | 曾凡民 | Automatic tool changing device of CNC (computer numerical control) machining center |
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2019
- 2019-09-19 CN CN201921568009.7U patent/CN210878770U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975512A (en) * | 2021-01-28 | 2021-06-18 | 曾凡民 | Automatic tool changing device of CNC (computer numerical control) machining center |
| CN112975512B (en) * | 2021-01-28 | 2024-04-19 | 曾凡民 | CNC numerical control machining center automatic tool changing device |
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