CN116460636B - Quick tool changing mechanism, machining center and tool changing method using machining center - Google Patents
Quick tool changing mechanism, machining center and tool changing method using machining center Download PDFInfo
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- CN116460636B CN116460636B CN202310439379.5A CN202310439379A CN116460636B CN 116460636 B CN116460636 B CN 116460636B CN 202310439379 A CN202310439379 A CN 202310439379A CN 116460636 B CN116460636 B CN 116460636B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 6
- 230000008859 change Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
- B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
The invention relates to the technical field of tool changing mechanisms, in particular to a quick tool changing mechanism, a machining center and a tool changing method using the machining center, comprising the following steps: the cutter changing device comprises an outer sleeve, a rotating shaft and a cutter changing arm, wherein the rotating shaft is rotatably arranged in the outer sleeve, the cutter changing arm is arranged at the end part of the rotating shaft, and a safety ejector rod for controlling the opening or locking of a cutter buckling part is arranged on the cutter changing arm; the loose knife assembly is arranged on the outer cylindrical surface of the outer sleeve, which is close to one end of the tool changing arm, and comprises a cylinder and a loose knife block arranged at the driving end of the cylinder, the end surface of the loose knife block, which faces the tool changing arm, is provided with a loose knife area parallel to the tool changing arm and a guiding and pushing surface which is obliquely arranged along the edge of the loose knife area towards the circumferential direction, the end part of the guiding and pushing surface, which is far away from the loose knife area, is lower than the end part of the safety ejector rod in a complete stretching state, and the safety ejector rod can enter the loose knife area along the guiding and pushing surface, so that the tool changing arm in the rotating process can realize automatic loose knife, can rotate in one step to carry out tool buckling operation, reduces the waiting time of the tool buckling and achieves the effect of quick tool changing.
Description
Technical Field
The invention relates to the technical field of tool changing mechanisms, in particular to a quick tool changing mechanism, a machining center and a tool changing method using the machining center.
Background
At present, more and more numerical control machine tools are provided with a mechanical arm tool magazine so as to finish machining of complex parts by one-time clamping, thereby improving machining efficiency, and the tool magazine is often in standard configuration especially for a horizontal machining center.
In the existing mechanical hand tool magazine, a tool changing arm is arranged at the end part of a rotating shaft, when a tool is changed, the rotating shaft drives the tool changing arm to rotate in a certain range and complete tool changing under the driving of a servo motor, and in order to prevent tools from sliding off, a tool buckling part of the tool changing arm is provided with a self-locking mechanism. However, the unlocking of the rotary tool holder and the self-locking mechanism cannot be performed synchronously, and the tool holder needs to be started and stopped once in the rotation process to wait for the unlocking step of the self-locking mechanism, so that the time of the tool changing action is prolonged, and the tool changing efficiency is lower.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the quick tool changing mechanism, the machining center and the tool changing method using the machining center are provided, and the problems in the background technology are effectively solved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a quick change mechanism comprising:
an outer sleeve;
and a rotation shaft rotatably provided in the outer sleeve;
the tool changing arm is arranged at the end part of the rotating shaft, and a safety ejector rod for controlling the opening or locking of the tool buckling part is arranged on the tool changing arm;
the cutter loosening assembly is arranged on the outer cylindrical surface of one end of the outer sleeve, which is close to the cutter changing arm, and comprises a cylinder and a cutter loosening block arranged at the driving end of the cylinder;
the end face of the cutter loosening block, which faces the cutter changing arm, is provided with a cutter loosening area parallel to the cutter changing arm and a guide pushing surface which is obliquely arranged along the edge of the cutter loosening area towards the circumferential direction, the end part of the guide pushing surface, which is far away from the cutter loosening area, is lower than the end part of the safety ejector rod in a fully-extended state, and the safety ejector rod can enter the cutter loosening area along the guide pushing surface so that the cutter changing arm in the rotating process can realize automatic cutter loosening.
Further, the tool changing arm includes a rotating body;
the cutter buckling part is arranged at two ends of the rotary body and is provided with an opening at one side for the cutter bar to enter and exit;
the cutter changing arm is provided with an abutting shaft adjacent to the cutter buckling part, the abutting shaft is inserted into the cutter changing arm along the parallel direction, and a spring is arranged on the abutting shaft so that the abutting shaft moves towards the cutter buckling part;
the butt axle is equipped with the location strip hole, be equipped with the puncture hole on the tool changing arm, the round pin axle passes the pinhole and gets into the location strip hole.
Further, the safety ejector rod comprises a sliding shaft section and an abutting shaft section, wherein the diameter of the sliding shaft section is larger than that of the abutting shaft section;
the sliding shaft section is arranged in the tool changing arm, a groove for accommodating a spring is formed in the end face of the sliding shaft section, and one end, extending out of the tool changing arm, of the abutting shaft section is abutted to the tool loosening area by the spring so that a tool can enter the tool buckling part.
Further, self-lubricating bearings are arranged at the contact positions of the tool changing arm, the sliding shaft section and the abutting shaft section.
Further, the guide pushing surface is arranged in a downward inclined manner along the radial direction in a direction away from the circle center.
Further, the loose blade area and the guide pushing surface form a fan-shaped loose blade area, and a boundary line between the loose blade area and the guide pushing surface is arranged along the radial direction.
Further, when the safety ejector rod is positioned at the boundary between the cutter loosening area and the guide pushing surface, the safety ejector rod is positioned above the connecting line between the cutter and the center of the rotating shaft.
Further, an origin induction switch is arranged on the rotating shaft, so that the tool changing arm can realize tool locking action from the same initial position.
The invention provides a machining center which comprises a tool magazine, a main shaft and a tool changing device, wherein the tool changing device is used for changing tools between the tool magazine and the main shaft, and the tool changing device adopts the quick tool changing mechanism so as to quickly buckle the tools.
The invention also provides a tool changing method of the quick tool changing mechanism, which comprises the following steps:
rotating the tool changing arm to an original point position, and translating the tool changing arm to a tool changing position through linear driving, wherein the rotating section of the tool changing arm is overlapped with the tool buckling interface of the tool handle;
driving the loose cutter block to move towards the cutter changing arm through the air cylinder until reaching the set pushing interface;
the servo motor drives the rotating shaft to rotate in the outer sleeve so as to drive the tool changing arm to rotate anticlockwise for buckling the tool, and when the tool changing arm rotates until the safety ejector rod leaves the guide pushing surface and enters the tool loosening area, the safety ejector rod is completely retracted at the moment, so that the tool buckling part is opened for the tool to enter;
the tool changing arm continues to rotate until the tool completely enters the tool buckling part, the tool changing arm stops rotating, the air cylinder drives the tool loosening block to move towards the direction away from the tool changing arm until the safety ejector rod extends out safely, the tool buckling part locks the tool at the moment, and the tool changing arm rotates to exchange the tool in the spindle and the tool magazine.
The beneficial effects of the invention are as follows: according to the invention, before the tool changing arm rotates to buckle the tool, the air cylinder drives the tool loosening block to move towards the tool changing arm to move to the tool loosening position in advance, when the tool changing arm buckles the tool, the inclined guide and push surface plays a role in guiding, and the safety ejector rod enters the tool loosening area along the guide and push surface, so that the tool changing arm can realize the opening of the tool buckling part under the state of no stopping rotation, the tool buckling operation can be performed at one time, the tool buckling waiting time is reduced, the tool changing efficiency is improved, and the effect of quick tool changing is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is an isometric view of a quick change mechanism according to an embodiment of the present invention;
FIG. 2 is a front view of a quick change mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the movement of the safety ejector rod on the loose blade in the embodiment of the invention;
FIG. 4 is a schematic view showing the positions of the safety ejector rod and the loose blade block in the fully extended state according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of the positions of the safety ejector pin and the cutter loosening block when the cutter changing arm rotates to the original position in the embodiment of the present invention;
FIG. 6 is a schematic view of a rotary loose blade of the tool changer arm from view A of FIG. 5;
FIG. 7 is a cross-sectional view of a tool changer arm positioned at an abutment shaft in accordance with an embodiment of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 7 at C;
FIG. 9 is a schematic view of a structure of a safety plunger moving to a knife-fastening position according to an embodiment of the present invention;
FIG. 10 is a schematic view of a parting line between a loose blade area and a push surface in an embodiment of the present invention;
FIG. 11 is a diagram showing the relationship between the cutter-fastening portion and the cutter when the safety ejector moves to the parting line position in the embodiment of the present invention;
fig. 12 is a partial enlarged view at B of fig. 2.
Reference numerals: 10. a rotation shaft; 20. a tool changing arm; 21. a safety ejector rod; 211. a slip shaft section; 212. abutting the shaft section; 213. self-lubricating bearings; 22. rotating the body; 23. a knife buckling part; 24. abutting the shaft; 241. positioning the strip holes; 30. a cutter loosening assembly; 31. a cylinder; 32. a cutter loosening block; 32a, a knife loosening area; 32b, a guide pushing surface; H. a dividing line; 40. an origin inductive switch.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The invention provides a quick tool changing mechanism, as shown in fig. 1-4, which comprises: the cutter changing device comprises an outer sleeve, a rotating shaft 10 and a cutter changing arm 20, wherein the rotating shaft 10 is arranged in the outer sleeve in a rotating mode, the cutter changing arm 20 is arranged at the end portion of the rotating shaft 10, a safety ejector rod 21 used for controlling the opening or locking of a cutter buckling part 23 is arranged on the cutter changing arm 20, when the safety ejector rod 21 is in a fully-extending state, the cutter buckling part 23 is in a locking state, when the safety ejector rod 21 is in a fully-retracting state, the cutter buckling part 23 is in an opening state, in addition, a cutter loosening assembly 30 is adopted for controlling the safety ejector rod 21, the cutter loosening assembly 30 is arranged on an outer cylindrical surface of the outer sleeve, which is close to one end of the cutter changing arm 20, and comprises an air cylinder 31 and a cutter loosening block 32 arranged at the driving end of the air cylinder 31, at the moment, the cutter loosening block 32 is positioned between the air cylinder 31 and the cutter changing arm 20, the safety ejector rod 21 penetrates through the cutter changing arm 20 to extend to the cutter loosening assembly 30, and the cutter loosening block 32 reciprocates under the action of the air cylinder 31, so that the extending distance of the safety ejector rod 21 is adjusted, and the opening or locking of the cutter buckling part 23 is controlled.
In the invention, preferably, the end surface of the loose blade block 32 facing the tool changing arm 20 is provided with a loose blade area 32a parallel to the tool changing arm 20 and a guide pushing surface 32b obliquely arranged along the edge of the loose blade area 32a towards the circumferential direction, and the end part of the guide pushing surface 32b away from the loose blade area 32a is lower than the end part of the safety ejector rod 21 in the fully extended state, so that the safety ejector rod 21 can enter the loose blade area 32a along the guide pushing surface 32b, and the tool changing arm 20 in the rotating process realizes automatic loose blade.
In the implementation process of the invention, before the tool changing arm 20 rotates to buckle the tool, the cylinder 31 drives the tool loosening block 32 to move towards the tool changing arm 20 to move to the tool loosening position in advance, when the tool changing arm 20 buckles the tool, the inclined guide and push surface 32b plays a guiding role, and the safety ejector rod 21 enters the tool loosening region 32a along the guide and push surface 32b, so that the tool changing arm 20 can realize the opening of the tool buckling part 23 in a non-stop state, the tool buckling operation can be performed at one time, the tool buckling waiting time is reduced, the tool changing efficiency is improved, and the rapid tool changing effect is achieved.
As shown in fig. 5, tool changer arm 20 of the present invention includes a rotating body 22; the cutter buckling part 23 is arranged at two ends of the rotary body 22, and the cutter buckling part 23 is provided with an opening at one side for the cutter bar to enter and exit; the tool changing arm 20 is provided with an abutment shaft 24 adjacent to the tool holding portion 23, the abutment shaft 24 is inserted into the tool changing arm 20 in a direction parallel to the tool changing arm 20, and a spring is provided on the abutment shaft 24 to move the abutment shaft 24 toward the tool holding portion 23.
Since the spring has a driving force in the axial direction to the abutment shaft 24, in order to prevent the abutment shaft 24 from being separated from the rotary body 22, a positioning bar hole 241 is provided on the abutment shaft 24, a penetration hole is provided on the tool changing arm 20, and a pin shaft penetrates through the pin hole to enter the positioning bar hole 241.
When the safety ejector 21 contacts with the cutter loosening region 32a, the cutter enters the cutter buckling part 23, so that the extending end of the abutting shaft 24 can retract towards the direction of the safety ejector 21; when the safety plunger 21 is fully extended, the extended end of the abutment shaft 24 contacts the cutter in the cutter-buckling portion 23 to fix the cutter inside the cutter-buckling portion 23.
As shown in fig. 9, in the present invention, the tool loosening block 32 corresponds to the tool setting position of the tool changing arm 20 one by one, when the tool magazine and the spindle are disposed on one side of the tool changing arm 20, the tool loosening assembly 30 is disposed on the same side, and when the tool changing arm 20 is disposed between the tool magazine and the spindle, the tool setting is required on both sides, so as to improve the tool changing efficiency of the tool changing arm 20.
In a preferred embodiment of the present invention, as shown in fig. 7 to 8, the safety ejector rod 21 includes a sliding shaft section 211 and an abutting shaft section 212, and the diameter of the sliding shaft section 211 is larger than that of the abutting shaft section 212; the sliding shaft section 211 is disposed in the tool changing arm 20, and a groove for accommodating a spring is provided on an end surface of the sliding shaft section 211, and the spring enables one end of the abutting shaft section 212 extending out of the tool changing arm 20 to abut against the loose tool region 32a so as to enable a tool to enter the tool buckling part 23.
On the basis of the above embodiment, the contact positions of the tool changing arm 20, the sliding shaft section 211 and the abutting shaft section 212 are provided with the self-lubricating bearings 213, and the outer cylindrical surface of the abutting shaft section 212 is in an inward gathering trend at one end close to the sliding shaft section 211, so that the contact area with the tool changing arm 20 is reduced, and the sliding friction is effectively reduced.
According to the invention, on the basis that the guide pushing surface 32b is inclined along the circumferential direction, as shown in fig. 3-4, the guide pushing surface 32b is arranged in a downward inclination way along the radial direction in a direction away from the circle center, so that when the safety push rod 21 rotates to the region of the guide pushing surface 32b, the end spherical contact of the safety push rod 21 contacts with the inclined surface, and the radial second inclination direction is utilized, so that the safety push rod 21 can generate circumferential driving force under the action of the rotating driving force of the cutter changing arm 20, thereby the safety push rod 21 rotates around the axis, further sliding friction between the safety push rod 21 and the guide pushing surface 32b is converted into rolling friction, the friction resistance of the safety push rod 21 to the rotation of the cutter changing arm 20 is reduced, the rotating load of the cutter changing arm 20 is effectively reduced, the service life is prolonged, and meanwhile, the safety push rod 21 is ensured to have enough cutter loosening stroke, and the phenomenon of cutter collision caused by incomplete cutter loosening is avoided.
As shown in fig. 10, in the present invention, the loose blade region 32a on the loose blade block 32 and the guiding surface 32b form a fan-shaped loose blade region 32a, and the parting line H between the loose blade region 32a and the guiding surface 32b is arranged along the radial direction, so that the center of the fan-shaped loose blade region 32a is located on the extending line of the parting line H, when the safety ejector rod 21 enters the loose blade region 32a through the guiding surface 32b, the complete loose blade of the buckling part 23 at the same rotation angle can be realized along any radius position, so that the uniqueness and the precision of the buckling position are ensured, the phenomenon that the rotation angles required when the buckling part 23 is opened due to the difference of the positions of the safety ejector rod 21 on the tool changing arm 20 is avoided, the installation and debugging time is reduced, and the universality of the loose blade block 32 is improved.
In the preferred embodiment of the present invention, as shown in fig. 11, when the safety ejector 21 is located at the boundary H between the loose blade region 32a and the guiding surface 32b, the safety ejector 21 is located above the line connecting the center of the cutter and the rotating shaft 10. Therefore, when the cutter of the cutter buckling part 23 enters the cutter buckling state in advance, the cutter is close to the opening of the cutter buckling part 23, and when the safety ejector 21 passes through the dividing line H and enters the cutter loosening region 32a, the cutter starts to enter the cutter buckling part 23, so that the sliding friction distance of the safety ejector 21 in the cutter loosening region 32a is shortened.
As shown in fig. 12, in the preferred embodiment of the present invention, an origin induction switch 40 is disposed on the rotating shaft 10, so that the tool changing arm 20 performs a tool locking action from the same starting position, specifically, before the tool changing arm 20 starts to lock the tool from the origin, the tool loosening block 32 moves to a pushing interface where the safety push rod 21 can be completely retracted through the cylinder 31, so as to ensure that the tool loosening area 32a is coplanar with the pushing interface, and by setting the origin induction switch 40, the tool changing arm 20 has a certain tool locking angle, thereby reducing the error rate of the program, ensuring that the safety push rod 21 can accurately reach the tool loosening area 32a when the tool changing arm 20 performs the tool locking action, and improving the precision and reliability of the tool locking.
The invention also provides a machining center which comprises a tool magazine, a main shaft and a tool changing device, wherein the tool changing device is used for changing tools between the tool magazine and the main shaft, and the tool changing device adopts the quick tool changing mechanism so as to quickly buckle the tools, thereby improving the tool changing efficiency.
The invention provides a tool changing method of a quick tool changing mechanism, which comprises the following steps:
rotating the tool changing arm 20 to an original position, and translating to a tool changing position through linear driving, wherein the rotating section of the tool changing arm 20 is overlapped with the tool buckling interface of the tool handle;
the air cylinder 31 drives the loose cutter block 32 to move towards the cutter changing arm 20 until reaching a set pushing interface;
the servo motor drives the rotary shaft 10 to rotate in the outer sleeve, so that the tool changing arm 20 is driven to rotate anticlockwise for buckling a tool, and when the tool changing arm 20 rotates until the safety ejector rod 21 leaves the guide pushing surface 32b and enters the tool loosening area 32a, the safety ejector rod 21 is completely retracted at the moment, so that the tool buckling part 23 is opened for the tool to enter; the tool changing arm 20 rotates from an original point to a tool buckling position, and the safety ejector rod 21 is pre-jacked through the guide pushing surface 32b, so that static friction between a sliding surface of the safety ejector rod 21 and the tool changing arm 20 is converted into dynamic friction, and the adsorption force between contact surfaces is reduced, so that the tool buckling part 23 can be opened better after the safety ejector rod 21 enters the tool loosening region 32 a;
the tool changing arm 20 continues to rotate until the tool completely enters the tool buckling part 23, the tool changing arm 20 stops rotating, the air cylinder 31 drives the tool loosening block 32 to move towards the direction away from the tool changing arm 20 until the safety ejector rod 21 extends out safely, at this time, the tool buckling part 23 locks the tool, and the tool changing arm 20 rotates to exchange the tool in the spindle and the tool magazine.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A quick change mechanism, comprising:
an outer sleeve;
and a rotation shaft rotatably provided in the outer sleeve;
the tool changing arm is arranged at the end part of the rotating shaft, and a safety ejector rod for controlling the opening or locking of the tool buckling part is arranged on the tool changing arm;
the cutter loosening assembly is arranged on the outer cylindrical surface of one end of the outer sleeve, which is close to the cutter changing arm, and comprises a cylinder and a cutter loosening block arranged at the driving end of the cylinder;
the end face of the cutter loosening block, which faces the cutter changing arm, is provided with a cutter loosening area parallel to the cutter changing arm and a guide pushing surface obliquely arranged along the edge of the cutter loosening area towards the circumferential direction, the end part of the guide pushing surface, which is far away from the cutter loosening area, is lower than the end part of the safety ejector rod in a fully extended state, and the safety ejector rod can enter the cutter loosening area along the guide pushing surface so as to enable the cutter changing arm in the rotating process to realize automatic cutter loosening;
the tool changing arm comprises a rotary body;
the cutter buckling part is arranged at two ends of the rotary body and is provided with an opening at one side for the cutter bar to enter and exit;
the cutter changing arm is provided with an abutting shaft adjacent to the cutter buckling part, the abutting shaft is inserted into the cutter changing arm along the parallel direction, and a spring is arranged on the abutting shaft so that the abutting shaft moves towards the cutter buckling part;
a positioning strip hole is formed in the abutting shaft, a penetrating hole is formed in the tool changing arm, and a pin shaft penetrates through the pin hole to enter the positioning strip hole;
the safety ejector rod comprises a sliding shaft section and an abutting shaft section, and the diameter of the sliding shaft section is larger than that of the abutting shaft section;
the sliding shaft section is arranged in the tool changing arm, a groove for accommodating a spring is formed in the end face of the sliding shaft section, and one end, extending out of the tool changing arm, of the abutting shaft section is abutted to the tool loosening area by the spring so that a tool can enter the tool buckling part.
2. The quick tool changing mechanism of claim 1 wherein the contact locations of the tool changing arm with the slipping shaft section and the abutting shaft section are each provided with a self-lubricating bearing.
3. The quick change mechanism of claim 1, wherein the push surface is disposed at a downward incline in a radial direction away from the center of the circle.
4. The quick change mechanism of claim 1, wherein the relief blade region forms a scalloped relief blade region with the pilot surface and a parting line of the relief blade region with the pilot surface is disposed radially.
5. The quick change mechanism of claim 1, wherein the safety ejector is located above a line connecting the cutter and the center of the rotation axis when the safety ejector is at a boundary between the cutter loosening region and the guide pushing surface.
6. The quick tool changing mechanism of claim 1 wherein the rotary shaft is provided with an origin sensing switch to enable the tool changing arm to perform a tool setting operation from the same starting position.
7. A machining center comprising a tool magazine, a spindle and a tool changing device for changing tools between the tool magazine and the spindle, wherein the tool changing device employs the quick tool changing mechanism according to any one of claims 1 to 6 for quick tool setting of tools.
8. A method of changing a tool of a quick change mechanism according to any one of claims 1-6, wherein the method of changing a tool comprises the steps of:
rotating the tool changing arm to an original point position, and translating the tool changing arm to a tool changing position through linear driving, wherein the rotating section of the tool changing arm is overlapped with the tool buckling interface of the tool handle;
driving the loose cutter block to move towards the cutter changing arm through the air cylinder until reaching the set pushing interface;
the servo motor drives the rotating shaft to rotate in the outer sleeve so as to drive the tool changing arm to rotate anticlockwise for buckling the tool, and when the tool changing arm rotates until the safety ejector rod leaves the guide pushing surface and enters the tool loosening area, the safety ejector rod is completely retracted at the moment, so that the tool buckling part is opened for the tool to enter;
the tool changing arm continues to rotate until the tool completely enters the tool buckling part, the tool changing arm stops rotating, the air cylinder drives the tool loosening block to move towards the direction away from the tool changing arm until the safety ejector rod extends out safely, the tool buckling part locks the tool at the moment, and the tool changing arm rotates to exchange the tool in the spindle and the tool magazine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310439379.5A CN116460636B (en) | 2023-04-21 | 2023-04-21 | Quick tool changing mechanism, machining center and tool changing method using machining center |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310439379.5A CN116460636B (en) | 2023-04-21 | 2023-04-21 | Quick tool changing mechanism, machining center and tool changing method using machining center |
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| CN116460636A CN116460636A (en) | 2023-07-21 |
| CN116460636B true CN116460636B (en) | 2023-09-26 |
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